Screen protector comprising glass-based substrate and adhesive
阅读说明：本技术 包括玻璃基基材和粘合剂的屏幕保护物 (Screen protector comprising glass-based substrate and adhesive ) 是由 S·M·布欧诺 J·艾默曼 吕志原 J·E·小莫里森 S·帕尔 A·苏布拉马尼安 叶楚榆 于 2019-08-12 设计创作，主要内容包括：一种屏幕保护物,其包括玻璃基基材和粘合剂。所述玻璃基基材包括第一主表面、第二主表面、厚度和边缘。第一主表面包括第一平面部分以及从第一平面部分向外延伸的周围部分。第二主表面包括第二平面部分,其与第一平面部分相对并且相对于第一平面部分平行。边缘包括外周围表面,其与第一主表面的周围部分相交。粘合剂包括第一主表面、第二主表面、厚度和边缘。粘合剂的第一主表面粘附于玻璃基基材的第二主表面。(A screen protector includes a glass-based substrate and an adhesive. The glass-based substrate includes a first major surface, a second major surface, a thickness, and an edge. The first major surface includes a first planar portion and a peripheral portion extending outwardly from the first planar portion. The second major surface includes a second planar portion opposite and parallel to the first planar portion. The edge includes an outer peripheral surface that intersects a peripheral portion of the first major surface. The adhesive includes a first major surface, a second major surface, a thickness, and an edge. The first major surface of the adhesive is adhered to the second major surface of the glass-based substrate.)
1. A screen saver, comprising:
a glass-based substrate, the glass-based substrate comprising:
a first major surface including a first planar portion and a peripheral portion extending outwardly from the first planar portion;
a second major surface comprising a second planar portion opposite the first planar portion, wherein the second planar portion is parallel with respect to the first planar portion;
a thickness defined between the first planar portion and the second planar portion along a thickness direction perpendicular to the first planar portion, the thickness being in a range of about 100 microns to about 1,000 microns; and
an edge extending between the first and second major surfaces, the edge comprising an outer peripheral surface that intersects a peripheral portion of the first major surface, the edge further comprising an undercut surface that intersects the outer peripheral surface of the edge and the second planar portion of the second major surface; and
an adhesive, comprising:
a first major surface adhered to a second planar portion of a second major surface of the glass-based substrate;
a second major surface opposite the first major surface of the adhesive;
a thickness defined between the first major surface of the adhesive and the second major surface of the adhesive in a range from about 50 microns to about 200 microns; and
an edge extending between the first major surface of the adhesive and the second major surface of the adhesive, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to a thickness direction of the glass-based substrate is in a range of about 100 nanometers to about 100 micrometers.
2. The screen protector of claim 1, wherein a peripheral portion of the first major surface of the glass-based substrate extends in a direction toward a plane of the second planar portion.
3. The screen protector of any of claims 1 and 2, wherein the peripheral portion of the first major surface of the glass-based substrate comprises a curved surface.
4. The screen protector of any of claims 1-3, wherein an outer peripheral surface of the edge comprises a height in the thickness direction that is in a range of about 60% to about 99% of the thickness of the glass-based substrate.
5. The screen protector of any of claims 1-4, wherein an outer peripheral surface of the edge comprises a flat surface.
6. The screen protector of any of claims 1-4, wherein an outer peripheral surface of the edge comprises a curved surface.
7. The screen protector of any of claims 1-6, wherein the undercut surface comprises a flat surface.
8. The screen protector of any of claims 1-6, wherein the undercut surface comprises a curved surface.
9. The screen protector of any of claims 1-8, wherein the undercut surface comprises a height in a thickness direction in a range of about 100 nanometers to about 50 micrometers.
10. The screen protector of any of claims 1-9, wherein the glass-based substrate has a thickness in a range from about 100 microns to about 400 microns.
11. The screen protector of any of claims 1-10, wherein the adhesive has a thickness in a range of about 100 microns to about 180 microns.
12. The screen protector of any one of claims 1-11, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 100 nanometers to about 80 micrometers.
13. The screen protector of any one of claims 1-12, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 1 micron to about 50 microns.
14. The screen protector of any of claims 1-13, wherein the screen protector comprises a 10% failure probability (B10 edge strength) for a four-point bend test in a range of about 250 megapascals (MPa) to about 1,000 MPa.
15. The screen protector of any of claims 1-14, wherein the glass-based substrate comprises a strengthened glass-based substrate selected from the group consisting of: chemically strengthened glass-based substrates, thermally strengthened glass-based substrates, and chemically strengthened and thermally strengthened glass-based substrates.
16. The screen protector of claim 15, wherein the strengthened glass-based substrate has a central tension in a range from about 10 megapascals (MPa) to about 100 MPa.
17. The screen protector of any of claims 1-16, wherein the undercut surface of the edge of the glass-based substrate comprises a surface roughness (Ra) in a range from about 1 nanometer to about 50 nanometers.
18. An apparatus comprising the screen protector of any of claims 1-17 and an electronic device comprising a mounting surface, wherein the glass-based substrate is mounted to the mounting surface on the electronic device by an adhesive, and the apparatus comprises an average failure for an edge crush test (average crush strength) on the glass-based substrate for a load of about 50 newtons (N) to about 500N.
19. A screen saver, comprising:
a glass-based substrate, the glass-based substrate comprising:
a first major surface including a first planar portion and a peripheral portion extending outwardly from the first planar portion;
a second major surface comprising a second planar portion opposite the first planar portion, wherein the second planar portion is parallel with respect to the first planar portion;
a thickness defined between the first planar portion and the second planar portion along a thickness direction perpendicular to the first planar portion, the thickness being in a range of about 100 microns to about 1,000 microns; and
an edge extending between the first and second major surfaces, the edge comprising an outer peripheral surface that intersects a peripheral portion of the first major surface, the edge further comprising an undercut surface that intersects the outer peripheral surface of the edge and the second planar portion of the second major surface; and
an adhesive, comprising:
a first major surface adhered to a second planar portion of a second major surface of the glass-based substrate;
a second major surface opposite the first major surface of the adhesive;
a thickness defined between the first major surface of the adhesive and the second major surface of the adhesive; and
an edge extending between the first major surface of the adhesive and the second major surface of the adhesive,
wherein the screen protector comprises a 10% failure probability (B10 edge strength) for a four-point bend test in a range of about 250 megapascals (MPa) to about 1,000 MPa.
20. The screen protector of claim 19, wherein a peripheral portion of the first major surface of the glass-based substrate extends in a direction toward a plane of the second planar portion.
21. The screen protector of any of claims 19 and 20, wherein the peripheral portion of the first major surface of the glass-based substrate comprises a curved surface.
22. The screen protector of any of claims 19-21, wherein the outer peripheral surface of the edge comprises a height in the thickness direction that is in a range of about 60% to about 99% of the thickness of the glass-based substrate.
23. The screen protector of any of claims 19-22, wherein an outer peripheral surface of the edge comprises a flat surface.
24. The screen protector of any of claims 19-22, wherein an outer peripheral surface of the edge comprises a curved surface.
25. The screen protector of any of claims 19-24, wherein the undercut surface comprises a flat surface.
26. The screen protector of any of claims 19-25, wherein the undercut surface comprises a curved surface.
27. The screen protector of any of claims 19-26, wherein the undercut surface comprises a height in a thickness direction in a range of about 100 nanometers to about 50 micrometers.
28. The screen protector of any one of claims 19-27, wherein the glass-based substrate has a thickness in a range from about 100 microns to about 400 microns.
29. The screen protector of any one of claims 19-28, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 100 nanometers to about 80 micrometers.
30. The screen protector of any one of claims 19-28, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 1 micron to about 50 microns.
31. The screen protector of any one of claims 19-30, wherein the glass-based substrate comprises a strengthened glass-based substrate selected from the group consisting of: chemically strengthened glass-based substrates, thermally strengthened glass-based substrates, and chemically strengthened and thermally strengthened glass-based substrates.
32. The screen protector of claim 31, wherein the strengthened glass-based substrate has a central tension in a range from about 10 megapascals (MPa) to about 100 MPa.
33. The screen protector of any of claims 19-32, wherein the undercut surface of the edge of the glass-based substrate comprises a surface roughness (Ra) in a range from about 1 nanometer to about 50 nanometers.
34. An apparatus comprising the screen protector of any of claims 19-33 and an electronic device comprising a mounting surface, wherein the glass-based substrate is mounted to the mounting surface on the electronic device by an adhesive, and the apparatus comprises an average failure for an edge crush test (average crush strength) on the glass-based substrate for a load of about 50 newtons (N) to about 500N.
35. An apparatus, comprising:
a glass-based substrate, the glass-based substrate comprising:
a first major surface including a first planar portion and a peripheral portion extending outwardly from the first planar portion;
a second major surface comprising a second planar portion opposite the first planar portion, wherein the second planar portion is parallel with respect to the first planar portion;
an edge extending between the first and second major surfaces, the edge comprising an outer peripheral surface intersecting a peripheral portion of the first major surface; and
a thickness defined between the first planar portion and the second planar portion along a thickness direction perpendicular to the first planar portion, the thickness being in a range of about 100 microns to about 1,000 microns;
an adhesive, comprising:
a first major surface adhered to a second planar portion of a second major surface of the glass-based substrate;
a second major surface opposite the first major surface of the adhesive;
a thickness defined between the first major surface of the adhesive and the second major surface of the adhesive in a range from about 50 microns to about 200 microns; and
an edge extending between the first major surface of the adhesive and the second major surface of the adhesive, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to a thickness direction of the glass-based substrate is in a range of about 100 nanometers to about 100 micrometers;
an electronic device comprising a mounting surface; and is
Wherein the glass-based substrate is mounted to a mounting surface of an electronic device with an adhesive, and the apparatus comprises an average failure (average crush strength) for an edge crush test on a glass-based sheet for a load of about 50 newtons (N) to about 500N.
36. The apparatus of claim 35, wherein a peripheral portion of the first major surface of the glass-based substrate extends in a direction toward a plane of the second planar portion.
37. The apparatus of any one of claims 35 and 36, wherein the peripheral portion of the first major surface of the glass-based substrate comprises a curved surface.
38. The apparatus of any of claims 35-37, wherein an outer peripheral surface of the edge comprises a height in the thickness direction that is in a range of about 60% to about 99% of the thickness of the glass-based substrate.
39. The apparatus of any of claims 35-38, wherein an outer peripheral surface of the rim comprises a flat surface.
40. The apparatus of any of claims 35-38, wherein an outer peripheral surface of the rim comprises a curved surface.
41. The apparatus of any one of claims 35-40, wherein the glass-based substrate has a thickness in a range from about 100 microns to about 400 microns.
42. The apparatus of any of claims 35-41, wherein the adhesive has a thickness in a range from about 100 microns to about 180 microns.
43. The apparatus of any one of claims 35-42, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 100 nanometers to about 80 micrometers.
44. The apparatus of any one of claims 35-43, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 1 micron to about 50 microns.
45. The apparatus of any of claims 35-44, wherein the glass-based sheet and the adhesive comprise a 10% probability of failure (B10 edge strength) for the four-point bend test in a range from about 250 megapascals (MPa) to about 1,000 MPa.
46. The apparatus of any one of claims 35-45, wherein the glass-based substrate comprises a strengthened glass-based substrate selected from the group consisting of: chemically strengthened glass-based substrates, thermally strengthened glass-based substrates, and chemically strengthened and thermally strengthened glass-based substrates.
47. The apparatus of claim 46, wherein the strengthened glass-based substrate has a central tension in a range from about 10 megapascals (MPa) to about 100 MPa.
48. A screen saver, comprising:
a glass-based substrate, the glass-based substrate comprising:
a first major surface including a first planar portion and a peripheral portion extending outwardly from the first planar portion;
a second major surface comprising a second planar portion opposite the first planar portion, wherein the second planar portion is parallel with respect to the first planar portion;
a thickness defined between the first planar portion and the second planar portion along a thickness direction perpendicular to the first planar portion, the thickness being in a range of about 100 microns to about 1,000 microns; and
an edge extending between the first major surface and the second major surface, the edge comprising an outer peripheral surface that intersects a peripheral portion of the first major surface, the edge further comprising an undercut surface that intersects the outer peripheral surface of the edge and a second planar portion of the second major surface, the undercut surface comprising a surface roughness (Ra) of about 1 nanometer to about 50 nanometers; and
an adhesive, comprising:
a first major surface adhered to a second planar portion of a second major surface of the glass-based substrate;
a second major surface opposite the first major surface of the adhesive;
a thickness defined between the first major surface of the adhesive and the second major surface of the adhesive; and
an edge extending between the first major surface of the adhesive and the second major surface of the adhesive,
wherein the screen protector comprises a 10% failure probability (B10 edge strength) for a four-point bend test in a range of about 250 megapascals (MPa) to about 1,000MPa, and the glass-based substrate is chemically strengthened comprising a central tension in a range of about 10MPa to about 100 MPa.
49. The screen protector of claim 48, wherein a peripheral portion of the first major surface of the glass-based substrate extends in a direction toward a plane of the second planar portion.
50. The screen protector of any one of claims 48 and 49, wherein a peripheral portion of the first major surface of the glass-based substrate comprises a curved surface.
51. The screen protector of any of claims 48-50, wherein an outer peripheral surface of the edge comprises a height in the thickness direction that is in a range of about 60% to about 99% of the thickness of the glass-based substrate.
52. The screen protector of any of claims 48-51, wherein an outer peripheral surface of the edge comprises a flat surface.
53. The screen protector of any of claims 48-51, wherein an outer peripheral surface of the edge comprises a curved surface.
54. The screen protector of any of claims 48-53, wherein the undercut surface comprises a flat surface.
55. The screen protector of any of claims 48-53, wherein the undercut surface comprises a curved surface.
56. The screen protector of any of claims 48-55, wherein the undercut surface comprises a height in the thickness direction in the range of about 100 nanometers to about 50 micrometers.
57. The screen protector of any one of claims 48-55, wherein the glass-based substrate has a thickness in a range from about 100 microns to about 400 microns.
58. The screen protector of any one of claims 48-57, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 100 nanometers to about 80 micrometers.
59. The screen protector of any one of claims 48-57, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 1 micron to about 50 microns.
60. The screen protector of any of claims 48-59, wherein the undercut surface of the edge of the glass-based substrate comprises a surface roughness (Ra) in a range from about 1 nanometer to about 50 nanometers.
61. An apparatus comprising the screen protector of any of claims 48-60 and an electronic device comprising a mounting surface, wherein the glass-based substrate is mounted to the mounting surface on the electronic device by an adhesive, and the apparatus comprises an average failure for an edge crush test (average crush strength) on the glass-based sheet for a load of about 50 newtons (N) to about 500N.
62. An apparatus, comprising:
a glass-based substrate, the glass-based substrate comprising:
a first major surface including a first planar portion and a peripheral portion extending outwardly from the first planar portion;
a second major surface comprising a second planar portion opposite the first planar portion, wherein the second planar portion is parallel with respect to the first planar portion;
a thickness defined between the first planar portion and the second planar portion along a thickness direction perpendicular to the first planar portion, the thickness being in a range of about 100 microns to about 1,000 microns; and
an edge extending between the first major surface and the second major surface, the edge comprising an outer peripheral surface that intersects a peripheral portion of the first major surface, the edge further comprising an undercut surface that intersects the outer peripheral surface of the edge and the second planar portion of the second major surface, the outer peripheral surface of the edge comprising a height in a thickness direction that is in a range of about 60% to about 99% of a thickness of the glass-based substrate, the undercut surface comprising a surface roughness (Ra) of about 1 nanometer to about 50 nanometers;
an adhesive, comprising:
a first major surface adhered to a second planar portion of a second major surface of the glass-based substrate;
a second major surface opposite the first major surface of the adhesive;
a thickness defined between the first major surface of the adhesive and the second major surface of the adhesive in a range from about 50 microns to about 200 microns; and
an edge extending between the first major surface of the adhesive and the second major surface of the adhesive, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to a thickness direction of the glass-based substrate is in a range of about 100 nanometers to about 100 micrometers; and
an electronic device, comprising a mounting surface,
wherein the glass-based substrate is mounted to a mounting surface of an electronic device with an adhesive, and the apparatus comprises an average failure (average crush strength) for an edge crush test on a glass-based sheet for a load of about 50 newtons (N) to about 500N.
63. The apparatus of claim 62, wherein a peripheral portion of the first major surface of the glass-based substrate extends in a direction toward a plane of the second planar portion.
64. The apparatus of any one of claims 62 and 63, wherein the peripheral portion of the first major surface of the glass-based substrate comprises a curved surface.
65. The apparatus of any one of claims 62-64, wherein an outer peripheral surface of the rim comprises a flat surface.
66. The apparatus of any one of claims 62-64, wherein an outer peripheral surface of the rim comprises a curved surface.
67. The apparatus of any one of claims 62-66, wherein the undercut surface comprises a flat surface.
68. The apparatus of any one of claims 62-66, wherein the undercut surface comprises a curved surface.
69. The apparatus of any one of claims 62-68, wherein the undercut surface comprises a height in a thickness direction that is in a range of about 100 nanometers to about 50 micrometers.
70. The apparatus of any of claims 62-69, wherein the glass-based substrate has a thickness in a range from about 100 microns to about 400 microns.
71. The apparatus of any of claims 62-70, wherein the adhesive has a thickness in a range from about 100 microns to about 180 microns.
72. The apparatus of any one of claims 62-71, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 100 nanometers to about 80 micrometers.
73. The apparatus of any one of claims 62-72, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 1 micron to about 50 microns.
74. The apparatus of any of claims 62-73, wherein the glass-based sheet and the adhesive comprise a 10% probability of failure (B10 edge strength) for the four-point bend test that is in a range from about 250 megapascals (MPa) to about 1,000 MPa.
75. The apparatus of any one of claims 62-74, wherein the glass-based substrate comprises a strengthened glass-based substrate selected from the group consisting of: chemically strengthened glass-based substrates, thermally strengthened glass-based substrates, and chemically strengthened and thermally strengthened glass-based substrates.
76. The apparatus of claim 75, wherein the strengthened glass-based substrate has a central tension in a range from about 10 megapascals (MPa) to about 100 MPa.
77. A portable electronic device comprising the screen saver of any one of claims 1-17, 19-33, and 48-60, the portable electronic device comprising:
a display;
a screen extending over the display, the screen comprising an outer major surface; and
a second major surface of adhesive adhered to the outer major surface of the screen.
78. The portable electronic device of claim 77, wherein the screen comprises a glass-based cover substrate.
Technical Field
The present disclosure relates generally to screen protectors comprising a glass-based substrate and an adhesive, and more particularly, to screen protectors comprising a glass-based substrate and further comprising a second major surface having a second planar portion adhered to the adhesive and a first major surface having a first planar portion and a surrounding portion.
Background
Electronic devices often include a display having a cover glass that is integrated with the device itself. Damage to the cover glass can make repair or replacement expensive. Therefore, there is a need to protect electronic devices, and in particular, the cover glass of the display of the device, from damage.
It is known to protect electronic devices from damage by placing the electronic devices in a protective housing. However, the protective housing with the desired mechanical properties is not transparent, which hampers the use of the underlying electronic device. It is also known to protect electronic devices from damage by placing a sheet of transparent material (e.g., a screen saver) over the electronic devices. However, such transparent materials often do not include desirable mechanical properties. Even transparent materials where the bulk of the material has desirable mechanical properties cannot maintain these properties at the edges of the material.
Localized stress can be applied to the material edges due to contact with rough surfaces (e.g., concrete), corners, and small objects (e.g., keys, paper clips). Once any portion of the material fails, the corresponding piece of material is typically discarded and replaced. As mentioned, the material edges tend to include weaker mechanical properties than the body.
Therefore, a certain material design is required, which includes mechanical properties at the edges comparable to the mechanical properties of the body. There is also a need for such material designs that include desirable mechanical properties for protecting electronic devices. Still further, such material designs need to be transparent.
Disclosure of Invention
A screen saver is proposed which is transparent and, since the screen saver comprises the desired mechanical properties at the edges, more effectively protects the underlying electronics. The mechanical properties include edge strength as measured using a four point bend test and crush strength as measured using a test method intended to simulate failure under real use conditions. Features of the present disclosure achieve the above-described mechanical properties for a screen protector comprising a glass-based substrate having a thickness of less than 1mm and an adhesive.
While certain exemplary embodiments of the present disclosure are described below, it should be understood that any of the embodiments may be used alone or in combination with one another.
Embodiment 1: a screen protector can include a glass-based substrate and an adhesive. The glass-based substrate may include a first major surface, a second major surface, an edge extending between the first major surface and the second major surface. The first major surface may include a first planar portion and a peripheral portion extending outwardly from the first planar portion. The second major surface can include a second planar portion opposite the first planar portion. The second planar portion may be parallel with respect to the first planar portion. The edge may include an outer peripheral surface that intersects a peripheral portion of the first major surface. The edge may further include an undercut surface that intersects the outer peripheral surface of the edge and the second planar portion of the second major surface. The glass-based substrate may also include a thickness defined between the first planar portion and the second planar portion along a thickness direction perpendicular to the first planar portion. The glass-based substrate may have a thickness in a range from about 100 micrometers to about 1,000 micrometers. The adhesive can include a first major surface, a second major surface, and an edge extending between the first major surface of the adhesive and the second major surface of the adhesive. The first major surface of the adhesive can be adhered to the second planar portion of the second major surface of the glass-based substrate. The adhesive can also include a thickness defined between the first major surface of the adhesive and the second major surface of the adhesive. The thickness of the adhesive may range from about 50 microns to about 200 microns. The screen protector may further include a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to a thickness direction of the glass-based substrate, and the maximum distance may be in a range of about 100 nanometers to about 100 micrometers.
Embodiment 2: the screen protector of embodiment 1, wherein a peripheral portion of the first major surface of the glass-based substrate can extend in a direction toward a plane of the second planar portion.
Embodiment 3: the screen protector of any of embodiments 1 and 2, wherein the peripheral portion of the first major surface of the glass-based substrate can include a curved surface.
Embodiment 4: the screen protector of any of embodiments 1-3, wherein the peripheral surface of the edge can include a height in the thickness direction that is in a range of about 60% to about 99% of the thickness of the glass-based substrate.
Embodiment 5: the screen saver of any of embodiments 1-4 wherein the outer peripheral surface of the edge can comprise a flat surface.
Embodiment 6: the screen saver of any of embodiments 1-4 wherein an outer peripheral surface of the edge can include a curved surface.
Embodiment 7: the screen saver of any of embodiments 1-6 wherein the undercut surface can comprise a flat surface.
Embodiment 8: the screen saver of any of embodiments 1-6 wherein the undercut surface can comprise a curved surface.
Embodiment 9: the screen protector of any of embodiments 1-8, wherein the undercut surface can comprise a height in a thickness direction in a range of about 100 nanometers to about 50 micrometers.
Embodiment 10: the screen protector of any of embodiments 1-9, wherein the glass-based substrate can have a thickness in a range from about 100 micrometers to about 400 micrometers.
Embodiment 11: the screen protector of any of embodiments 1-10, wherein the adhesive can have a thickness in a range from about 100 microns to about 180 microns.
Embodiment 12: the screen protector of any of embodiments 1-11, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate may be in a range from about 100 nanometers to about 80 micrometers.
Embodiment 13: the screen protector of any of embodiments 1-12, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 1 micron to about 50 microns.
Embodiment 14: the screen protector of embodiments 1-13, wherein the screen protector can comprise a 10% failure probability (B10 edge strength) for the four-point bend test that is in a range of about 250 megapascals (MPa) to about 1,000 MPa.
Embodiment 15: the screen protector of any of embodiments 1-14, wherein the glass-based substrate can comprise a strengthened glass-based substrate selected from the group consisting of: chemically strengthened glass-based substrates, thermally strengthened glass-based substrates, and chemically strengthened and thermally strengthened glass-based substrates.
Embodiment 16: the screen protector of embodiment 15, wherein the strengthened glass-based substrate can comprise a central tension in a range from about 10 megapascals (MPa) to about 100 MPa.
Embodiment 17: the screen protector of any of embodiments 1-16, wherein the undercut surface of the edge of the glass-based substrate can comprise a surface roughness (Ra) in a range from about 1 nanometer to about 50 nanometers.
Embodiment 18: an apparatus comprising a screen saver and an electronic device as described in any of embodiments 1-17. The electronic device may include a mounting surface. The glass substrate sheet of the screen protector may be mounted on the mounting surface of the electronic device by the adhesive of the screen protector. The apparatus can include an average failure (average crush strength) for an edge crush test on a glass-based substrate for a load of about 50 newtons (N) to about 500N.
Embodiment 19: a screen protector can include a glass-based substrate and an adhesive. The glass-based substrate may include a first major surface, a second major surface, an edge extending between the first major surface and the second major surface. The first major surface may include a first planar portion and a peripheral portion extending outwardly from the first planar portion. The second major surface can include a second planar portion opposite the first planar portion. The second planar portion may be parallel with respect to the first planar portion. The edge may include an outer peripheral surface that intersects a peripheral portion of the first major surface. The edge may further include an undercut surface that intersects the outer peripheral surface of the edge and the second planar portion of the second major surface. The glass-based substrate may also include a thickness defined between the first planar portion and the second planar portion along a thickness direction perpendicular to the first planar portion. The glass-based substrate may have a thickness in a range from about 100 micrometers to about 1,000 micrometers. The adhesive can include a first major surface, a second major surface, and an edge extending between the first major surface of the adhesive and the second major surface of the adhesive. The first major surface of the adhesive can be adhered to the second planar portion of the second major surface of the glass-based substrate. The adhesive can also include a thickness defined between the first major surface of the adhesive and the second major surface of the adhesive. The screen protector may further include a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to a thickness direction of the glass-based substrate. The screen protector may include a 10% failure probability (B10 edge strength) for a four-point bend test that is in a range of about 250 megapascals (MPa) to about 1,000 MPa.
Embodiment 20: the screen protector of embodiment 19, wherein a peripheral portion of the first major surface of the glass-based substrate can extend in a direction toward a plane of the second planar portion.
Embodiment 21: the screen protector of any of embodiments 19 and 20, wherein the peripheral portion of the first major surface of the glass-based substrate can comprise a curved surface.
Embodiment 22: the screen protector of any of embodiments 19-21, wherein the peripheral surface of the edge can comprise a height in the thickness direction that is in a range of about 60% to about 99% of the thickness of the glass-based substrate.
Embodiment 23: the screen saver of any of embodiments 19-22 wherein an outer peripheral surface of the edge can comprise a flat surface.
Embodiment 24: the screen saver of any of embodiments 19-22 wherein an outer peripheral surface of the edge can include a curved surface.
Embodiment 25: the screen saver of any of embodiments 19-24 wherein the undercut surface can comprise a flat surface.
Embodiment 26: the screen saver of any of embodiments 19-24 wherein the undercut surface can comprise a curved surface.
Embodiment 27: the screen protector of any of embodiments 19-26, wherein the undercut surface can comprise a height in a thickness direction in a range of about 100 nanometers to about 50 micrometers.
Embodiment 28: the screen protector of any of embodiments 19-27, wherein the glass-based substrate has a thickness in a range from about 100 micrometers to about 400 micrometers.
Embodiment 29: the screen protector of any of embodiments 19-28, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate can be in a range from about 100 nanometers to about 80 micrometers.
Embodiment 30: the screen protector of any of embodiments 19-29, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 1 micron to about 50 microns.
Embodiment 31: the screen protector of any of embodiments 19-30, wherein the glass-based substrate can comprise a strengthened glass-based substrate selected from the group consisting of: chemically strengthened glass-based substrates, thermally strengthened glass-based substrates, and chemically strengthened and thermally strengthened glass-based substrates.
Embodiment 32: the screen protector of embodiment 31, wherein the strengthened glass-based substrate can comprise a central tension in a range from about 10 megapascals (MPa) to about 100 MPa.
Embodiment 33: the screen protector of any of embodiments 19-32, wherein the undercut surface of the edge of the glass-based substrate can comprise a surface roughness (Ra) in a range from about 1 nanometer to about 50 nanometers.
Embodiment 34: an apparatus comprising a screen saver and an electronic device as described in any of embodiments 19-33. The electronic device may include a mounting surface. The glass substrate sheet of the screen protector may be mounted on the mounting surface of the electronic device by the adhesive of the screen protector. The apparatus can include an average failure (average crush strength) for an edge crush test on a glass-based substrate for a load of about 50 newtons (N) to about 500N.
Embodiment 35: an apparatus can include a glass-based substrate, an adhesive, and an electronic device. The glass-based substrate may include a first major surface, a second major surface, an edge extending between the first major surface and the second major surface. The first major surface may include a first planar portion and a peripheral portion extending outwardly from the first planar portion. The second major surface can include a second planar portion opposite the first planar portion. The second planar portion may be parallel with respect to the first planar portion. The edge may include an outer peripheral surface that intersects a peripheral portion of the first major surface. The glass-based substrate may also include a thickness defined between the first planar portion and the second planar portion along a thickness direction perpendicular to the first planar portion. The glass-based substrate may have a thickness in a range from about 100 micrometers to about 1,000 micrometers. The adhesive can include a first major surface, a second major surface, and an edge extending between the first major surface of the adhesive and the second major surface of the adhesive. The first major surface of the adhesive can be adhered to the second planar portion of the second major surface of the glass-based substrate. The adhesive can also include a thickness defined between the first major surface of the adhesive and the second major surface of the adhesive. The thickness of the adhesive may range from about 50 microns to about 200 microns. The screen protector may further include a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to a thickness direction of the glass-based substrate, and the maximum distance may be in a range of about 100 nanometers to about 100 micrometers. The electronic device may include a mounting surface. The glass-based substrate may be mounted to a mounting surface of an electronic device by an adhesive. The apparatus can include an average failure (average crush strength) for an edge crush test on a glass-based substrate for a load of about 50 newtons (N) to about 500N.
Embodiment 36: the apparatus of embodiment 35, wherein a peripheral portion of the first major surface of the glass-based substrate can extend in a direction toward a plane of the second planar portion.
Embodiment 37: the apparatus of any of embodiments 35 and 36, wherein the peripheral portion of the first major surface of the glass-based substrate can include a curved surface.
Embodiment 38: the apparatus of any of embodiments 35-37, wherein the peripheral surface of the edge can include a height in the thickness direction that is in a range of about 60% to about 99% of the thickness of the glass-based substrate.
Embodiment 39: the apparatus of any of embodiments 35-38, wherein an outer peripheral surface of the rim can comprise a flat surface.
Embodiment 40: the apparatus of any of embodiments 35-38, wherein an outer peripheral surface of the rim may comprise a curved surface.
Embodiment 41: the apparatus of any of embodiments 35-40, wherein the glass-based substrate has a thickness in a range from about 100 micrometers to about 400 micrometers.
Embodiment 42: the apparatus of any of embodiments 35-41, wherein the adhesive has a thickness in a range from about 100 microns to about 180 microns.
Embodiment 43: the apparatus of any of embodiments 35-42, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate can be in a range from about 100 nanometers to about 80 micrometers.
Embodiment 44: the apparatus of any of embodiments 35-43, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 1 micron to about 50 microns.
Embodiment 45: the apparatus of embodiments 35-44, wherein the glass-based substrate and the adhesive may comprise a 10% probability of failure (B10 edge strength) for the four-point bending test in a range from about 250 megapascals (MPa) to about 1,000 MPa.
Embodiment 46: the apparatus of any of embodiments 35-45, wherein the glass-based substrate may comprise a strengthened glass-based substrate selected from the group consisting of: chemically strengthened glass-based substrates, thermally strengthened glass-based substrates, and chemically strengthened and thermally strengthened glass-based substrates.
Embodiment 47: the apparatus of embodiment 46, wherein the strengthened glass-based substrate comprises a central tension in a range from about 10 megapascals (MPa) to about 100 MPa.
Embodiment 48: a screen protector can include a glass-based substrate and an adhesive. The glass-based substrate may include a first major surface, a second major surface, an edge extending between the first major surface and the second major surface. The first major surface may include a first planar portion and a peripheral portion extending outwardly from the first planar portion. The second major surface can include a second planar portion opposite the first planar portion. The second planar portion may be parallel with respect to the first planar portion. The edge may include an outer peripheral surface that intersects a peripheral portion of the first major surface. The edge may further include an undercut surface that intersects the outer peripheral surface of the edge and the second planar portion of the second major surface. The undercut may include a surface roughness (Ra) in a range of about 1 nanometer to about 50 nanometers. The glass-based substrate may also include a thickness defined between the first planar portion and the second planar portion along a thickness direction perpendicular to the first planar portion. The glass-based substrate may have a thickness in a range from about 100 micrometers to about 1,000 micrometers. The adhesive can include a first major surface, a second major surface, and an edge extending between the first major surface of the adhesive and the second major surface of the adhesive. The first major surface of the adhesive can be adhered to the second planar portion of the second major surface of the glass-based substrate. The adhesive can also include a thickness defined between the first major surface of the adhesive and the second major surface of the adhesive. The screen protector may further include a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to a thickness direction of the glass-based substrate. The glass-based substrate may be chemically strengthened and may include a central tension in a range from about 10 megapascals (MPa) to about 100 MPa. The screen protector can include a 10% failure probability (B10 edge strength) for the four-point bend test that is in a range of about 250MPa to about 1,000 MPa.
Embodiment 49: the screen protector of embodiment 48, wherein a peripheral portion of the first major surface of the glass-based substrate can extend in a direction toward a plane of the second planar portion.
Embodiment 50: the screen protector of any of embodiments 48 and 49, wherein the peripheral portion of the first major surface of the glass-based substrate can comprise a curved surface.
Embodiment 51: the screen protector of any of embodiments 48-50, wherein the peripheral surface of the edge can comprise a height in the thickness direction that is in a range of about 60% to about 99% of the thickness of the glass-based substrate.
Embodiment 52: the screen saver of any of embodiments 48-51 wherein an outer peripheral surface of the edge can comprise a flat surface.
Embodiment 53: the screen saver of any of embodiments 48-51 wherein an outer peripheral surface of the edge can include a curved surface.
Embodiment 54: the screen saver of any of embodiments 48-53 wherein the undercut surface can comprise a flat surface.
Embodiment 55: the screen saver of any of embodiments 48-53 wherein the undercut surface can comprise a curved surface.
Embodiment 56: the screen protector of any of embodiments 48-55, wherein the undercut surface can comprise a height in a thickness direction in a range from about 100 nanometers to about 50 micrometers.
Embodiment 57: the screen protector of any of embodiments 48-56, wherein the glass-based substrate has a thickness in a range from about 100 micrometers to about 400 micrometers.
Embodiment 58: the screen protector of any of embodiments 48-57, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate can be in a range from about 100 nanometers to about 80 micrometers.
Embodiment 59: the screen protector of any of embodiments 48-58, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 1 micron to about 50 microns.
Embodiment 60: the screen protector of any of embodiments 48-59, wherein the undercut surface of the edge of the glass-based substrate can comprise a surface roughness (Ra) in a range from about 1 nanometer to about 50 nanometers.
Embodiment 61: an apparatus comprising a screen saver and an electronic device as in any of embodiments 48-60. The electronic device may include a mounting surface. The glass substrate sheet of the screen protector may be mounted on the mounting surface of the electronic device by the adhesive of the screen protector. The apparatus can include an average failure (average crush strength) for an edge crush test on a glass-based substrate for a load of about 50 newtons (N) to about 500N.
Embodiment 62: a screen protector can include a glass-based substrate and an adhesive. The glass-based substrate may include a first major surface, a second major surface, an edge extending between the first major surface and the second major surface. The first major surface may include a first planar portion and a peripheral portion extending outwardly from the first planar portion. The second major surface can include a second planar portion opposite the first planar portion. The second planar portion may be parallel with respect to the first planar portion. The edge may include an outer peripheral surface that intersects a peripheral portion of the first major surface. The edge may further include an undercut surface that intersects the outer peripheral surface of the edge and the second planar portion of the second major surface. The outer peripheral surface of the edge may include a height in the thickness direction that may be in a range of about 60% to about 99% of the thickness of the glass-based substrate. The undercut may include a surface roughness (Ra) in a range of about 1 nanometer to about 50 nanometers. The glass-based substrate may also include a thickness defined between the first planar portion and the second planar portion along a thickness direction perpendicular to the first planar portion. The glass-based substrate may have a thickness in a range from about 100 micrometers to about 1,000 micrometers. The adhesive can include a first major surface, a second major surface, and an edge extending between the first major surface of the adhesive and the second major surface of the adhesive. The first major surface of the adhesive can be adhered to the second planar portion of the second major surface of the glass-based substrate. The adhesive can also include a thickness defined between the first major surface of the adhesive and the second major surface of the adhesive. The thickness of the adhesive may range from about 50 microns to about 200 microns. The screen protector may further include a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to a thickness direction of the glass-based substrate, and the maximum distance may be in a range of about 100 nanometers to about 100 micrometers. The screen protector may include an average failure (average crush strength) for an edge crush test for a load of about 50 newtons (N) to about 500N.
Embodiment 63: the apparatus of embodiment 62, wherein a peripheral portion of the first major surface of the glass-based substrate can extend in a direction toward a plane of the second planar portion.
Embodiment 64: the apparatus of any of embodiments 62 and 63, wherein the peripheral portion of the first major surface of the glass-based substrate can comprise a curved surface.
Embodiment 65: the apparatus of any of embodiments 62-64, wherein an outer peripheral surface of the rim can comprise a flat surface.
Embodiment 66: the apparatus of any of embodiments 62-64, wherein an outer peripheral surface of the rim may comprise a curved surface.
Embodiment 67: the apparatus as in any one of embodiments 62-66, wherein the undercut surface may comprise a flat surface.
Embodiment 68: the apparatus as in any one of embodiments 62-66, wherein the undercut surface may comprise a curved surface.
Embodiment 69: the apparatus of any of embodiments 62-68, wherein the undercut surface can comprise a height in a thickness direction that is in a range of about 100 nanometers to about 50 micrometers.
Embodiment 70: the apparatus of any of embodiments 62-69, wherein the glass-based substrate has a thickness in a range from about 100 micrometers to about 400 micrometers.
Embodiment 71: the apparatus of any of embodiments 62-70, wherein the adhesive has a thickness in a range from about 100 microns to about 180 microns.
Embodiment 72: the apparatus of any of embodiments 62-71, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate can be in a range from about 100 nanometers to about 80 micrometers.
Embodiment 73: the apparatus of any of embodiments 62-72, wherein a maximum distance between an outer peripheral surface of the edge of the glass-based substrate and the edge of the adhesive in a direction perpendicular to the thickness direction of the glass-based substrate is in a range from about 1 micron to about 50 microns.
Embodiment 74: the apparatus of embodiments 62-73, wherein the glass-based substrate and the adhesive can comprise a 10% probability of failure (B10 edge strength) for the four-point bending test in a range from about 250 megapascals (MPa) to about 1,000 MPa.
Embodiment 75: the apparatus of any of embodiments 62-74, wherein the glass-based substrate can comprise a strengthened glass-based substrate selected from the group consisting of: chemically strengthened glass-based substrates, thermally strengthened glass-based substrates, and chemically strengthened and thermally strengthened glass-based substrates.
Embodiment 76: the apparatus of embodiment 75, wherein the strengthened glass-based substrate comprises a central tension in a range from about 10 megapascals (MPa) to about 100 MPa.
Embodiment 77: a portable electronic device that can include a screen saver as in any of embodiments 1-17, 19-33, and 48-60, a display, and a screen extending over the display, the screen further including an outer major surface. The second major surface of the adhesive may be adhered to an outer major surface of a screen of the portable electronic device.
Embodiment 78: the portable electronic device of embodiment 77, wherein the screen of the portable electronic device comprises a glass-based cover substrate.
Brief description of the drawings
The above features and advantages and other features and advantages of embodiments of the present disclosure may be better understood by reading the following detailed description with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of a screen saver according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view of some embodiments of the apparatus along line 2-2 of FIG. 1;
FIG. 3 is an enlarged view taken at view 3 of FIG. 2;
FIG. 4 is an enlarged view of some embodiments of the apparatus taken at view 3 of FIG. 2;
FIG. 5 is an enlarged view of some embodiments of the apparatus taken at view 3 of FIG. 2;
FIG. 6 is an enlarged view of some embodiments of the apparatus taken at view 3 of FIG. 2;
FIG. 7 is a schematic side view of a testing apparatus that may be used to determine the crush strength of an edge of a screen saver in accordance with an embodiment of the present disclosure; and
fig. 8 is a schematic top view of the testing apparatus of fig. 7 that may be used to determine the crush strength of an edge of a screen saver in accordance with an embodiment of the present disclosure.
Detailed Description
Embodiments will now be described more fully herein with reference to the accompanying drawings, in which exemplary embodiments are shown. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. The claims may, however, encompass many different embodiments, with each embodiment, and should not be construed as limited to the embodiments set forth herein.
Fig. 1 illustrates a schematic view of a screen saver 101, according to an embodiment of the disclosure. In some embodiments, the screen saver 101 can include a glass-based substrate 103. In some embodiments, as shown in fig. 1, the screen saver 101 can include holes 109a, 109b in the glass-based substrate 103. In some embodiments, the at least one aperture may correspond to a location of a speaker, microphone, button, switch, or camera on the device 227 (see fig. 2) for which the screen saver 101 is designed to protect.
As shown in fig. 1, the screen saver 101 can include a length 111 and a width 113. In some embodiments, the length 111 of the screen saver 101 can be greater than or equal to about 1 millimeter (mm), greater than or equal to about 30mm, greater than or equal to about 50mm, greater than or equal to about 100mm, greater than or equal to about 130mm, greater than or equal to about 150mm, greater than or equal to about 160mm, greater than or equal to about 200mm, less than or equal to about 500mm, less than or equal to about 300mm, or less than or equal to about 200 mm. In some embodiments, the length 111 of the screen saver 101 can be in the following range: from about 1mm to about 500mm, from about 1mm to about 300mm, from about 1mm to about 200mm, from about 30mm to about 500mm, from about 30mm to about 300mm, from about 30mm to about 200mm, from about 50mm to about 500mm, from about 50mm to about 300mm, from about 50mm to about 200mm, from about 100mm to about 500mm, from about 100mm to about 300mm, from about 100mm to about 200mm, from about 120mm to about 200mm, from about 130mm to about 200mm, from about 50mm to about 160mm, from about 50mm to about 150mm, and all ranges and subranges therebetween. In some embodiments, the width 113 of the screen saver 101 can be approximately equal to, greater than, or less than the length 111 of the screen saver 101. In some embodiments, the width 113 of the screen saver 101 can include the ranges set forth above with respect to the length 111 of the screen saver. In some embodiments, the length 111 and the width 113 of the screen saver 101 can be the same as corresponding dimensions of the device 227 (see fig. 2) or a portion of the device 227 (e.g., a screen of the device) that the screen saver 101 is designed to protect. In some embodiments, the length 111 and the width 113 of the screen saver 101 can be proportional to corresponding dimensions of the device 227 (see fig. 2) or a portion of the device 227 (e.g., a screen of the device) that the screen saver 101 is designed to protect. In some embodiments, the length 111 and/or the width 113 of the screen saver 101 can be less than or greater than corresponding dimensions of the device 227 or a portion of the device 227 (e.g., a screen of the device) that the screen saver 101 is designed to protect.
As described above, the screen protector may include the glass-based substrate 103. As used herein, "glass-based" includes both glass and glass-ceramics, wherein the glass-ceramics have one or more crystalline phases and an amorphous residual glass phase. The glass-based substrate 103 may include an amorphous material (e.g., glass) and optionally one or more crystalline materials (e.g., ceramic). The amorphous material and the glass-based material that make up the glass-based substrate 103 may be thermally or chemically strengthened, as described below. Exemplary glass-based materials that may be free of or may contain lithium oxide include soda lime glass, alkali aluminosilicate glass, alkali containing borosilicate glass, alkali aluminophosphosilicate glass, and alkali aluminoborosilicate glass. In one or more embodiments, the glass-based substrate 103 may include, in mole percent (mol%): about 40 mol% to about 80 mol% SiO2About 10 mol% to about 30 mol% of Al2O3From about 0 mol% to about 10 mol% of B2O3From about 0 mol% to about 5 mol% ZrO2From about 0 mol% to about 15 mol% of P2O5About 0 mol% to about 2 mol% TiO2From about 0 mol% to about 20 mol% of R2O, and 0 to about 15 mol% RO. R as used herein2O may mean an alkali metal oxide, for example, Li2O、Na2O、K2O、Rb2O and Cs2And O. RO as used herein may refer to MgO, CaO, SrO, BaO, and ZnO. In some embodiments, the glass-based substrate 103 may optionally further comprise about 0 mol% to about 2 mol% of each of the following: na (Na)2SO4、NaCl、NaF、NaBr、K2SO4、KCl、KF、KBr、As2O3、Sb2O3、SnO2、Fe2O3、MnO、MnO2、MnO3、Mn2O3、Mn3O4、Mn2O7. In some embodiments, the glass-based substrate 103 may be transparent, meaning that the glass-based substrate 103 comprises an average light transmission of about 85% or more, about 86% or more, about 87% or more, about 88% or more, about 89% or more, about 90% or more, about 91% or more, or about 92% or more, within an optical wavelength of 400 nanometers (nm) to 700 nm.
In some embodiments, as shown in fig. 2-6, the glass-based substrate 103 may include a first major surface 105, 403, 503, 603 including a first planar portion 201, 409, 509, 609; and a second major surface 207, 405, 505, 605, which may be opposite the corresponding first major surface 105, 403, 503, 603. The second major surface 207, 405, 505, 605 may include a second planar portion 209, 417, 517, 617, which may be parallel to the first planar portion 201, 409, 509, 609. In some embodiments, the first major surface 105, 403, 503, 603 of the glass-based substrate 103 can include one or more surface coatings. In some embodiments, the surface coating may include an easy-to-clean coating, a low-friction coating, an oleophobic coating, a diamond-like coating, a scratch-resistant coating, an abrasion-resistant coating, or a combination thereof. The material constituting the coating may comprise a hard oxide, nitride or oxynitride layer, optionally in combination with a metal layer. For example, the scratch resistant coating may comprise an oxynitride, such as aluminum oxynitride or silicon oxynitride. In some embodiments, the abrasion-resistant layer may comprise the same material as the scratch-resistant layer. In some embodiments, the scratch resistant coating can have a physical thickness in the following range: about 1nm to 10 μm, about 25nm to about 10 μm, about 200nm to about 10 μm, about 500nm to about 10 μm, about 1 μm to about 10 μm, about 100nm to about 5 μm, about 500nm to about 5 μm, about 1 μm to about 2 μm, and all ranges and subranges therebetween. In some embodiments, the low friction coating may include a highly fluorinated silane coupling agent, such as an alkyl fluorosilane, in which an oxymethyl group is appended to the silicon atom. In some embodiments, the easy-clean coating may comprise the same material as the low-friction coating. In other embodiments, the easy-clean coating may include protonatable groups, such as amines, for example, alkyl aminosilanes, with an oxymethyl group pendant to the silicon atom. In some embodiments, the oleophobic coating can comprise the same material as the easy-to-clean coating. In some embodiments, the diamond-like coating comprises carbon and may be produced by applying a high voltage potential in the presence of a hydrocarbon plasma.
Throughout the present disclosure, as shown in fig. 3-6, thickness 217 of glass-based substrate 103 may be defined as the distance in thickness direction 217a of thickness 217 between a first point on first planar portion 201, 409, 509, 609 of first major surface 105, 403, 503, 603 of glass-based substrate 103 and a second point on second planar portion 209, 417, 517, 617 of second major surface 207, 405, 505, 605, wherein the first point and the second point are selected such that they are as close together as possible. Without wishing to be bound by theory, a section between two parallel planes will comprise a minimum distance when the section is perpendicular to the planes. In some embodiments, the thickness 217 can be greater than or equal to about 100 micrometers (μm), greater than or equal to about 200 μm, greater than or equal to about 250 μm, greater than or equal to about 300 μm, less than or equal to about 1,000 μm, less than or equal to about 800 μm, less than or equal to about 600 μm, less than or equal to about 550 μm, less than or equal to about 500 μm, less than or equal to about 450 μm, less than or equal to about 400 μm, or less than or equal to about 350 μm. In some embodiments, the thickness 217 may be in the following range: about 100 μm to about 1,000 μm, about 200 μm to about 1,000 μm, about 250 μm to about 1,000 μm, about 300 μm to about 1,000 μm, about 100 μm to about 800 μm, about 200 μm to about 800 μm, about 250 μm to about 800 μm, about 300 μm to about 800 μm, about 100 μm to about 600 μm, about 200 μm to about 600 μm, about 250 μm to about 600 μm, about 300 μm to about 600 μm, about 100 μm to about 550 μm, about 200 μm to about 550 μm, about 250 μm to about 550 μm, about 300 μm to about 550 μm, about 100 μm to about 500 μm, about 200 μm to about 500 μm, about 250 μm to about 500 μm, about 300 μm to about 500 μm, about 100 μm to about 450 μm, about 200 μm to about 450 μm, about 400 μm to about 450 μm, about 200 μm to about 400 μm, about 250 μm to about 400 μm, about 300 μm to about 400 μm, about 100 μm to about 350 μm, about 200 μm to about 350 μm, about 250 μm to about 350 μm, about 300 μm to about 350 μm, and all ranges and subranges therebetween.
In some embodiments, the first major surface 105, 403, 503, 603 may further include a first peripheral portion 203, 411, 511, 611 extending outwardly from the first planar portion 201, 409, 509, 609 of the first major surface 105, 403, 503, 603. The peripheral portion 203, 411, 511, 611 of the first main surface 105, 403, 503, 603 may extend towards the second main surface 207, 405, 505, 605. In some embodiments, as shown in fig. 3 and 5-6, the peripheral portion 203, 511, 611 of the corresponding first major surface 105, 503, 603 may comprise a flat surface. In other embodiments, as shown in fig. 4, a peripheral portion 411 of the first major surface 403 may include a curved surface.
In the present disclosure, the height 202 of the peripheral portion 203, 411, 511, 611 of the first main surface 105, 403, 503, 603 of the glass based substrate 103 may be defined as the distance in the thickness direction 217a between a first point 204a and a second point 204b, the first point 204a being located at the intersection of the peripheral portion 203, 411, 511, 611 of the first main surface 105, 403, 503, 603 of the glass based substrate 103 and the first planar portion 201, 409, 509, 609, the second point 204b being located at the intersection of the first main surface 105, 403, 503, 603 of the glass based substrate 103 and the outer peripheral edge 107, 407, 507, 607, wherein the first point 204a and the second point 204b are selected such that they are as far apart as possible in the thickness direction 217 a. In some embodiments, the height 202 of the peripheral portion 203, 411, 511, 611 may be greater than or equal to about 1 μm, greater than or equal to about 5 μm, greater than or equal to about 10 μm, greater than or equal to about 20 μm, greater than or equal to about 50 μm, less than or equal to about 400 μm, less than or equal to about 300 μm, less than or equal to about 200 μm, less than or equal to about 150 μm, or less than or equal to about 100 μm. In some embodiments, the height 202 of the peripheral portion 203, 411, 511, 611 may be within the following range: about 1 μm to about 400 μm, about 5 μm to about 400 μm, about 10 μm to about 400 μm, about 20 μm to about 400 μm, about 50 μm to about 400 μm, about 1 μm to about 300 μm, about 5 μm to about 300 μm, about 10 μm to about 300 μm, about 20 μm to about 300 μm, about 30 μm to about 300 μm, about 1 μm to about 200 μm, about 5 μm to about 200 μm, about 10 μm to about 200 μm, about 20 μm to about 200 μm, about 50 μm to about 200 μm, about 1 μm to about 150 μm, about 5 μm to about 150 μm, about 10 μm to about 150 μm, about 20 μm to about 150 μm, about 50 μm to about 150 μm, about 1 μm to about 100 μm, about 5 μm to about 100 μm, about 10 μm to about 100 μm, about 20 μm to about 100 μm, and all ranges therebetween.
In the present disclosure, the width 206 of the peripheral portion 203, 411, 511, 611 of the first main surface 105, 403, 503, 603 of the glass-based substrate 103 may be defined as the distance in the width direction perpendicular to the thickness direction 217a between a first point 204a and a second point 204b, the first point 204a being located at the intersection of the peripheral portion 203, 411, 511, 611 of the first main surface 105, 403, 503, 603 of the glass-based substrate 103 and the first planar portion 201, 409, 509, 609, the second point 204b being located at the intersection of the first main surface 105, 403, 503, 603 of the glass-based substrate 103 and the outer peripheral edge 107, 407, 507, 607, wherein the first point 204a and the second point 204b are selected such that they are as close as possible in the width direction. In some embodiments, the width 206 of the surrounding portion 203, 411, 511, 611 may be approximately equal to the height 202 of the surrounding portion 203, 411, 511, 611, but in some embodiments the width 206 may be greater or less than the height 202. In some embodiments, the width 206 of the peripheral portion 203, 411, 511, 611 may be greater than or equal to about 10 μm, greater than or equal to about 50 μm, greater than or equal to about 100 μm, greater than or equal to about 200 μm, greater than or equal to about 300 μm, less than or equal to about 5mm, less than or equal to about 2mm, less than or equal to about 1mm, less than or equal to about 800 μm, or less than or equal to about 600 μm. In some embodiments, the width 206 of the peripheral portion 203, 411, 511, 611 may be in the following range: about 10 μm to about 5mm, about 50 μm to about 5mm, about 100 μm to about 5mm, about 200 μm to about 5mm, about 300 μm to about 5mm, about 10 μm to about 2mm, about 50 μm to about 2mm, about 100 μm to about 2mm, about 200 μm to about 2mm, about 300 μm to about 2mm, about 10 μm to about 1mm, about 50 μm to about 1mm, about 100 μm to about 1mm, about 200 μm to about 1mm, about 300 μm to about 1mm, about 10 μm to about 800 μm, about 50 μm to about 800 μm, about 100 μm to about 800 μm, about 200 μm to about 800 μm, about 300 μm to about 800 μm, about 10 μm to about 600 μm, about 50 μm to about 600 μm, about 100 μm to about 600 μm, about 200 μm to about 600 μm, about 300 μm to about 600 μm, and all subranges therebetween.
The glass-based substrate 103 may also include an outer peripheral edge 107, 407, 507, 607 between the first major surface 105, 403, 503, 603 and the second major surface 207, 405, 505, 605. In some embodiments, the outer peripheral edge 107, 407, 507, 607 may meet a surrounding portion 203, 411, 511, 611 of the first major surface 105, 403, 503, 603. The outer peripheral edge 107, 407, 507, 607 may include an outer peripheral surface 205, 413, 513, 613 extending from the first major surface 105, 403, 503, 603 towards the second major surface 207, 405, 505, 605. In some embodiments, as shown in fig. 3-4 and 6, the outer peripheral surface 205, 413, 613 of the corresponding outer peripheral edge 107, 507, 607 may comprise a flat surface. In other embodiments, as shown in fig. 5, the outer peripheral surface 513 of the outer peripheral edge 507 may comprise a curved surface. It will be appreciated that a flat or curved outer peripheral surface of the rim may be used in combination with a flat or curved peripheral portion of the first major surface as described above. In addition, as shown in fig. 5, a curved outer peripheral surface 513 of the outer peripheral edge 507 may be provided in combination with the flat peripheral portion 511 of the first major surface 503. In further embodiments, the curved outer peripheral surface 513 of the outer peripheral edge 507 of fig. 5 may be provided in combination with the curved peripheral portion 411 of the first major surface 403 shown in fig. 4.
In the present disclosure, the outer peripheral surface 205, 413, 513, 613 of the outer peripheral edge 107, 407, 507, 607 may include an outermost peripheral extent. Referring to fig. 5, outermost peripheral extent 514 may include a point or line on the surface contour of outer peripheral surface 513 of outer peripheral edge 507. In some embodiments, the outermost peripheral extent 514 of the outer peripheral surface 513 of the outer peripheral edge 507 may include a line perpendicular to the thickness direction 217 a. In other further embodiments, outermost peripheral extent 514 may include a line along outer peripheral surface 513 of outer peripheral edge 507 and not perpendicular to thickness direction 217 a. In some embodiments, outermost peripheral extent 514 may include a point on outer peripheral surface 513. In other embodiments, as shown in fig. 2-4 and 6, the outermost peripheral extent may include the entire outer peripheral surface 205, 413, 613 of the corresponding outer peripheral edge 107, 407, 607. In other embodiments, the outermost peripheral extent may include less than a portion of the entire outer peripheral surface of the rim.
Throughout the present disclosure, as shown in fig. 3-6, the height 219 of the outer peripheral surface 205, 413, 513, 613 of the outer peripheral edge 107, 407, 507, 607 of the glass-based substrate 103 may be defined as the distance between the second point 204b and a third point 204c as defined above, the third point 204c being in the thickness direction 217a, on the outer peripheral surface 205, 413, 513, 613 of the outer peripheral edge 107, 407, 507, 607 of the glass-based substrate 103, wherein the second point 204b and the third point 204c are selected such that they are as spaced apart as possible in the thickness direction 217 a. In some embodiments, the height 219 of the outer peripheral surface 205 of the outer peripheral edge 107 of the glass-based substrate 103 may be about 60% or greater, about 65% or greater, about 70% or greater, about 75% or greater, or about 80% or greater of the thickness 217 of the glass-based substrate 103. In some embodiments, the height 219 of the outer peripheral surface 205, 413, 513, 613 of the outer peripheral edge 107, 407, 507, 607 of the glass-based substrate 103 may be about 100% or less, about 99% or less, about 98% or less, about 95% or less, about 90% or less, about 85% or less, or about 80% or less of the thickness 217 of the glass-based substrate 103. In some embodiments, the height 219 of the outer peripheral surface 205, 413, 513, 613 of the outer peripheral edge 107, 407, 507, 607 of the glass-based substrate 103 may be about 60% to about 99%, about 65% to about 99%, about 70% to about 99%, about 75% to about 99%, about 80% to about 99%, about 60% to about 98%, about 65% to about 98%, about 70% to about 98%, about 75% to about 98%, about 80% to about 99%, about 60% to about 95%, about 65% to about 95%, about 70% to about 95%, about 75% to about 95%, about 80% to about 95%, about 60% to about 90%, about 65% to about 90%, about 70% to about 90%, about 75% to about 90%, about 80% to about 90%, about 60% to about 85%, about 65% to about 85%, about 70% to about 85%, about 75% to about 85%, about 60% to about 80%, from about 65% to about 80%, from about 70% to about 80%, and all ranges and subranges therebetween.
In some embodiments, the outer peripheral edge 107, 407, 507, 607 may further comprise an undercut 208, 415, 515, 615. The undercut 208, 415, 515, 615 can extend between the outer peripheral surface 205, 413, 513, 613 and the second major surface 207, 405, 505, 605 of the outer peripheral edge 107, 407, 507, 607. In some embodiments, as shown in fig. 3-5, the undercuts 208, 415, 515 of the corresponding outer peripheral edge 107, 407, 507 may comprise a flat surface. In some embodiments, as shown in fig. 6, the undercut 615 of the outer peripheral edge 607 may comprise a curved surface. It will be appreciated that the flat or curved undercut of the edge may be combined with the flat or curved outer peripheral surface of the edge and the flat or curved peripheral portion of the first major surface as described above.
Throughout the present disclosure, the height 221 of the undercut 208, 415, 515, 615 of the outer peripheral edge 107, 407, 507, 607 of the glass-based substrate 103 may be defined as the distance in the thickness direction 217a between a third point 204c and a fourth point 204d, as defined above, at the intersection of the undercut 208, 415, 515, 615 of the outer peripheral edge 107, 407, 507, 607 of the glass-based substrate 103 and the second main surface 207, 405, 505, 605, wherein the third point 204c and the fourth point 204d are selected such that they are as close as possible in the thickness direction 217 a.
Throughout the present disclosure, the width 222 of the undercut 208, 415, 515, 615 of the outer peripheral edge 107, 407, 507, 607 of the glass-based substrate 103 may be defined as the distance, in the width direction perpendicular to the thickness direction 217a, between a third point 204c as defined above and a fourth point 204d as defined above, wherein the third point 204c and the fourth point 204d are as close as possible in the width direction. In some embodiments, the width 222 of the undercut 208 may be approximately equal to the height 221 of the undercut 208, but in other embodiments, the width 222 of the undercut 208 may be greater than or less than the height 221 of the undercut 208.
In some embodiments, the height 221 and/or width 222 of the undercut 208, 415, 515, 615 may be less than or equal to about 50 micrometers (μm), less than or equal to about 40 μm, less than or equal to about 30 μm, less than or equal to about 20 μm, less than or equal to about 10 μm, greater than or equal to about 100 nanometers (nm), greater than or equal to about 200nm, greater than or equal to about 500nm, or greater than or equal to about 1 μm. In some embodiments, the height 221 and/or width 222 of the undercut 208, 415, 515, 615 may be in the following ranges: about 100nm to about 50 μm, about 200nm to about 50 μm, about 500nm to about 50 μm, about 1 μm to about 50 μm, about 100nm to about 40 μm, about 200nm to about 40 μm, about 500nm to about 40 μm, about 1 μm to about 40 μm, about 100nm to about 30 μm, about 200nm to about 30 μm, about 500nm to about 30 μm, about 1 μm to about 30 μm, about 100nm to about 20 μm, about 200nm to about 20 μm, about 500nm to about 20 μm, about 1 μm to about 20 μm, about 100nm to about 10 μm, about 200nm to about 10 μm, about 500nm to about 10 μm, about 1 μm to about 50 μm, and all ranges and subranges therebetween.
In some embodiments, the undercut 208, 415, 515, 615 may be polished using mechanical grinding, mechanical polishing, or acid treatment. Unless otherwise indicated, all surface roughness values set forth in this disclosure are average surface roughness (Ra) calculated from the average position in a direction perpendicular to the surface of a test area of 10 μm × 10 μm using the arithmetic mean of the absolute deviations of the surface profile, the test area of 10 μm × 10 μm being measured using Atomic Force Microscopy (AFM) unless the size of the undercut is less than or equal to about 10 μm, in which case the size of the undercut is less than or equal to about 10 μm, the test area is rectangular, but still includes about 100 μm2The area of (a). Concave cut part208. The surface of 415, 515, 615 can include an average surface roughness (Ra) of less than or equal to about 50nm, less than or equal to about 40nm, less than or equal to about 30nm, less than or equal to about 20nm, or less than or equal to about 10 nm. In some embodiments, the average surface roughness (Ra) of the surface of the undercut 208, 415, 515, 615 may be in the following range: from about 1nm to about 50nm, from about 2nm to about 50nm, from about 5nm to about 50nm, from about 10nm to about 50nm, from about 1nm to about 40nm, from about 2nm to about 40nm, from about 5nm to about 40nm, from about 10nm to about 40nm, from about 1nm to about 30nm, from about 2nm to about 30nm, from about 5nm to about 30nm, from about 10nm to about 30nm, from about 1nm to about 20nm, from about 2nm to about 20nm, from about 5nm to about 20nm, from about 10nm to about 20nm, from about 1nm to about 10nm, from about 2nm to about 10nm, from about 5nm to about 10nm, and all ranges and subranges therebetween.
In some embodiments, the glass-based substrate 103 may be strengthened, resulting in a strengthened glass-based substrate. Methods of producing strengthened glass-based substrates include chemical strengthening, thermal strengthening, or a combination of chemical and thermal strengthening. The strengthened glass-based substrate (e.g., glass-based substrate 103) can be characterized by a Central Tension (CT), which can be defined as the maximum tensile stress within the strengthened glass-based substrate, as measured using scattered light polarizer (SCALP) techniques known in the art. In some embodiments, the strengthened glass-based substrate (e.g., glass-based substrate 103) can comprise a CT of greater than or equal to about 10 megapascals (MPa), greater than or equal to about 20MPa, greater than or equal to about 30MPa, greater than or equal to about 50MPa, less than or equal to about 100MPa, less than or equal to about 80MPa, or less than or equal to about 60 MPa. In some embodiments, the strengthened glass-based substrate (e.g., glass-based substrate 103) can include a central tension in the range of: from about 10MPa to about 100MPa, from about 20MPa to about 100MPa, from about 30MPa to about 100MPa, from about 50MPa to about 100MPa, from about 10MPa to about 80MPa, from about 20MPa to about 80MPa, from about 30MPa to about 80MPa, from about 50MPa to about 80MPa, from about 10MPa to about 60MPa, from about 20MPa to about 60MPa, from about 30MPa to about 60MPa, from about 50MPa to about 60MPa, and all ranges and subranges therebetween. In other embodiments, the glass-based substrate 103 may be unreinforced.
The thermal strengthening includes controlling the temperature of the glass-based substrate 103 to a predetermined initial temperature T0And then quenching the glass-based substrate at a predetermined heat transfer rate h. To achieve higher heat transfer rates and minimize the incidence of breakage, some embodiments transfer thermal energy from the glass-based substrate 103 through a gap that may be free of solid or liquid substances to a heat sink and gas that may circulate through the gap, while the glass-based substrate 103 may be supported by an air rod. In some embodiments, the heat strengthening comprises an initial temperature T of about 700 ℃ to about 900 ℃ or about 800 ℃0And greater than or equal to about 0.010cal/cm2-s-DEG C, less than or equal to about 0.100cal/cm2-s-deg.C, or at about 0.010cal/cm2-s-DEG C to about 0.100cal/cm2-a heat transfer rate in the range of s-DEG C. In some exemplary embodiments, the screen protector 101 including the glass-based substrate 103 may utilize an initial temperature T that is about equal to or greater than the glass transition temperature of the glass-based substrate 1030To perform heat strengthening.
The chemical strengthening includes a glass-based substrate 103 that may have been thermally strengthened, which may be sprayed with a molten salt or ionic salt solution, and/or immersed in a molten salt bath or ionic salt solution to exchange ions in the glass-based substrate 103 with ions in the molten salt bath or ionic salt solution. This process may be referred to as "ion exchange" because ions at or near the surface of the glass-based substrate 103 are replaced by (i.e., exchanged with) ions from the molten salt bath or ionic salt solution in the same oxidation state but with larger ionic radii. In some embodiments, the ions exchanged out of the glass-based substrate 103 may include monovalent alkali metal cations, e.g., Li+、Na+、K+、Rb+And Cs+. In some embodiments, the ions exchanged into the glass-based substrate 103 may include alkali metal cations or other metal cations, such as Ag+. In some embodiments, the molten salt bath or ionic salt solution may include KNO3、NaNO3And LiNO3Any one or more of. Molten salt bath or ionic salt solutionThe fluid may include a temperature of greater than or equal to about 300 ℃, greater than or equal to about 350 ℃, less than or equal to about 500 ℃, or less than or equal to about 450 ℃. The molten salt bath or ionic salt solution may include a temperature of about 300 ℃ to about 500 ℃, about 350 ℃ to about 5000 ℃, about 350 ℃ to about 450 ℃. In some embodiments, the glass-based substrate 103 may be submerged for about 10 minutes or more, about 30 minutes or more, about 5 hours or less, or about 1 hour or less. In some embodiments, the glass-based substrate may be submerged for a time within the following range: from about 10 minutes to about 5 hours, from about 10 minutes to about 1 hour, from about 30 minutes to about 5 hours, from about 30 minutes to about 1 hour, and all ranges and subranges therebetween.
The screen saver 101 can also include an adhesive 211. The binder may comprise one or more material(s) including synthetic polymers or natural materials. Embodiments of natural materials may include gelatin, casein gelatin, blood protein gelatin, starch, dextrin agar, and mastic. Embodiments of suitable polymers include, but are not limited to, copolymers, such as diblock copolymers, co-block copolymers, and the like, as well as blends of: thermoplastics, including Polystyrene (PS), Polycarbonate (PC); polyesters, including polyethylene terephthalate (PET); polyolefins, including Polyethylene (PE), polyvinyl chloride (PVC); acrylic polymers including Polymethylmethacrylate (PMMA), thermoplastic urethanes (TPU), Polyetherimides (PEI); epoxy resin; and silicones, including Polydimethylsiloxane (PDMS). In exemplary embodiments, the adhesive 211 will reduce the overall transparency of the screen saver 101 by about 5% or less, or about 2% or less, or about 1% or less. In some further exemplary embodiments, the adhesive 211 may comprise a first material in contact with the glass-based substrate 103 and a second material in contact with the device 227. The first material can include a high peel strength, for example, greater than or equal to about 2N/mm, greater than or equal to about 5N/mm, in a range from about 2N/mm to about 10N/mm, or in a range from about 5N/mm to about 10N/mm. The second material may include a low peel strength, for example, less than or equal to about 0.5N/mm, less than or equal to about 0.2N/mm, less than or equal to about 0.1N/mm, in a range from about 0.5N/mm to about 0.001N/mm, or in a range from about 0.2N/mm to about 0.001N/mm. Unless otherwise indicated, all peel strength measurements were made according to American Society for Testing and Materials (ASTM) standard D3330. In some embodiments, when desired, the screen saver 101 can be removed from the device 227 but the adhesive 211 is not tacky and then remains on the device.
The adhesive 211 can include a first major surface 213 that can be adhered to the second major surface 207, 405, 505, 605 of the glass-based substrate 103. Adhesive 211 may also include a second major surface 215, which may be opposite first major surface 213 of adhesive 211. Throughout this disclosure, as shown in fig. 3-6, thickness 223 of adhesive 211 may be defined as the distance in thickness direction 217a between a first point on first major surface 213 of adhesive 211 and a second point on second major surface 215 of adhesive 211, where the first point and the second point are selected such that they are as far apart as possible in thickness direction 217 a. In some embodiments, the thickness 223 of the adhesive 211 may be greater than or equal to about 50 μm, greater than or equal to about 80 μm, greater than or equal to about 100 μm, greater than or equal to about 120 μm, less than or equal to about 200 μm, less than or equal to about 190 μm, less than or equal to about 180 μm, or less than or equal to about 170 μm. In some embodiments, the thickness 223 of the adhesive 211 may be in the following range: about 50 μm to about 200 μm, about 80 μm to about 200 μm, about 100 μm to about 200 μm, about 120 μm to about 200 μm, about 50 μm to about 190 μm, about 80 μm to about 190 μm, about 100 μm to about 190 μm, about 120 μm to about 190 μm, about 50 μm to about 180 μm, about 80 μm to about 180 μm, about 100 μm to about 180 μm, about 120 μm to about 180 μm, about 50 μm to about 170 μm, about 80 μm to about 170 μm, about 100 μm to about 170 μm, about 120 μm to about 170 μm, and all ranges and subranges therebetween.
Adhesive 211 may include an edge 225. Edge 225 can extend from first major surface 213 of adhesive 211 to second major surface 215 of adhesive 211. Throughout this disclosure, the deviation 226 of the adhesive 211 from the outer peripheral edge 107, 407, 507, 607 of the glass base substrate 103 may be defined as the distance, in a direction perpendicular to the thickness direction 217a, that the outermost peripheral extent of the surface of the edge 225 of the adhesive 211 is recessed from the outermost peripheral extent (e.g., 514) of the outer peripheral edge 107, 407, 507, 607 of the glass base substrate 103. In some embodiments, the deviation 226 of the adhesive 211 from the outer peripheral edge 107, 407, 507, 607 of the glass-based substrate 103 may be greater than or equal to about 100nm, greater than or equal to about 200nm, greater than or equal to about 500nm, greater than or equal to about 1 μm, greater than or equal to about 5 μm, less than or equal to about 100 μm, less than or equal to about 75 μm, less than or equal to about 50 μm, less than or equal to about 40 μm, or less than or equal to about 30 μm. In some embodiments, the deviation 226 may be within the following ranges: about 100nm to about 100 μm, about 200nm to about 100 μm, about 500nm to about 100 μm, about 1 μm to about 100 μm, about 5 μm to about 100 μm, about 100nm to about 75 μm, about 200nm to about 75 μm, about 500nm to about 75 μm, about 1 μm to about 75 μm, about 2 μm to about 75 μm, about 5 μm to about 75 μm, about 100nm to about 50 μm, about 200nm to about 50 μm, about 500nm to about 50 μm, about 1 μm to about 50 μm, about 2 μm to about 50 μm, about 5 μm to about 50 μm, about 100nm to about 40 μm, about 200nm to about 40 μm, about 500nm to about 40 μm, about 1 μm to about 40 μm, about 2 μm to about 40 μm, about 5 μm to about 40 μm, about 30nm to about 30 μm, about 30 μm to about 30 μm, about 5 μm to about 30 μm, and all ranges and subranges therebetween.
Second major surface 215 of adhesive 211 can be adhered to device 227. In some implementations, the device 227 may include a display, which may include a Liquid Crystal Display (LCD), an electrophoretic display (EPD), an organic light emitting diode display (OLED), a plasma display Panel (PDD), or a touch sensor embedded display. In some implementations, the device 227 can be a portable electronic device (e.g., a smartphone, a tablet, a watch, a laptop) or a stationary electronic device (e.g., a computer monitor, a television). In some embodiments, there may be a transparent layer on device 227 in direct contact with second major surface 215 of adhesive 211. In some embodiments, the transparent layer of device 227 may beThe screen (e.g., cover substrate), and may be a material commonly used as a screen, including but not limited to amorphous inorganic materials (e.g., glass), crystalline materials [ e.g., sapphire, single or polycrystalline alumina, spinel (MgAl)2O4)]Or a polymer. Embodiments of suitable polymers include, but are not limited to, copolymers or blends of: thermoplastics, including Polystyrene (PS), Polycarbonate (PC); polyesters, including polyethylene terephthalate (PET); polyolefins, including Polyethylene (PE), polyvinyl chloride (PVC); acrylic polymers including Polymethylmethacrylate (PMMA), Thermoplastic Polyurethane (TPU), Polyetherimide (PEI); epoxy resin; and silicones, including Polydimethylsiloxane (PDMS). Embodiments of glasses that may or may not be strengthened, and that may or may not contain lithium oxide include soda lime glass, alkali aluminosilicate glass, alkali containing borosilicate glass, and alkali aluminoborosilicate glass.
In a four-point bending test according to American Society for Testing and Materials (ASTM) standard 158-02, the screen protector 101 (i.e., the glass-based substrate 103 and the adhesive 211) was subjected to a bending load of about 5 mm/minute using a load span of 18mm and a support span of 36mm, with the tape on the compression side and the Polytetrafluoroethylene (PTFE) surface contacting the side of the screen protector 101 that was under tension. The test continues until the screen saver 101 fails. Only screen protectors that fail within about 10mm of the edge are considered in calculating the edge strength. The calculated edge strength can be reported as the strength at which the probability of failure for the four-point bending test is 10% (B10 edge strength). In some embodiments, a screen protector 101 according to the present disclosure can include a B10 edge strength of greater than or equal to about 250 megapascals (MPa), greater than or equal to about 300MPa, greater than or equal to about 400MPa, greater than or equal to about 500MPa, greater than or equal to about 600MPa, greater than or equal to about 700MPa, greater than or equal to about 800MPa, or less than or equal to about 1,000 MPa. In some embodiments, a screen protector 101 according to the present disclosure may include a B10 edge strength within the following ranges: from about 250MPa to about 1,000MPa, from about 300MPa to about 1,000MPa, from about 400MPa to about 1,000MPa, from about 500MPa to about 1,000MPa, from about 600MPa to about 1,000MPa, from about 700MPa to about 1,000MPa, from about 800MPa to about 1,000MPa, and all ranges and subranges therebetween.
In the crush strength test, the screen saver 101 was tested using the test apparatus 701 shown in fig. 7 and 8. The screen protector 101 is always mounted on a mounting surface 228 of a device 227 (e.g., the device 227 designed to protect it) with the adhesive 211, wherein the mounting surface 228 of the device 227 comprises substantially the same contour as the second major surface 207 of the glass-based sheet 103. The device comprising the screen saver 101 and the screen saver 101 being mounted on the apparatus 227 is secured in a carrier 713. As shown, the carrier 713 may include a plate 715, the plate 715 supporting the weight of the screen protector 101, and clamps 717a, 717b that prevent the screen protector 101 from moving on the carrier 713 during testing. The carrier 713 is movably mounted on a pivot joint 719, the pivot joint 719 serving to adjust the angle between the plane defined by the carrier 713 and the probe axis 711. Pivot joint 719 allows carrier 713 to pivot along an x-y-z directional component, as shown by the pivot arrow in fig. 7, and may be locked to prevent further adjustment, if desired. The probe axis 711 strikes the first major surface 105 of the screen protector 101 at a test location 803, the test location 803 being 3mm from an outermost peripheral extent (e.g., 514) of the outer peripheral surface 205, 413, 513, 613 of the outer peripheral edge 107, 407, 507, 607 of the glass base substrate 103 in the direction of the length 111 or the direction of the width 113 of the screen protector 101. The probe 703 comprises an outer tip 705 on the probe axis 711 and in the direction of the probe axis 711 at a position closest to the carrier 713. The outer tip 705 is formed by two converging planar surfaces of the probe 703 that taper at an oblique angle in a direction toward the outer tip 705 to define a contact area of the outer tip 705 extending along the width of the outer tip 705. The tilt angle of probe 703 is 30.17 deg., and is bisected by probe axis 711. Probe 703 includes an end extending 0.25mm from the outer tip 705 of probe 703 and has a surface area of 1.4mm2. The probe 703 is attached to a force sensor 707,which is connected to a display 709, the display 709 showing the load currently being applied by the probe 703 on the screen saver 101. The probe 703 is oriented so that the width of the outer tip 705 is substantially perpendicular to the edge under test.
The first step of the testing method is to secure a device comprising the screen saver 101 in a carrier 713 and the screen saver 101 is mounted to the mounting surface 228 of the apparatus 227 by means of the adhesive 211. Furthermore, the carrier 713 is adjusted such that the probe axis 711 impinges on the glass-based substrate 103 of the screen saver 101 at the test position 803 with an angle of incidence that is perpendicular to the first main surface 105, 403, 503, 603 of the screen saver 101 at the test position 803. The second step is to move the probe 703 along the probe axis 711 until the outer tip 705 of the probe 703 touches the glass-based substrate 103 of the screen saver 101 and to apply a predetermined test load to the screen saver 101 as shown by display 709. The third step is to determine whether the screen saver 101 has failed by testing the locations 803 for cracking, which may be determined by visual inspection for macrocracks, by listening for cracks, or by monitoring the display 709 for a signal indicating cracking. If the screen saver 101 cracks, only the last step remains. Otherwise, the fourth step is to determine if the current predetermined test load value is equal to the predetermined maximum load. If the current predetermined test load value is equal to the predetermined maximum load, only the last step remains. Otherwise, the predetermined test load is increased at a predetermined rate and the method is returned to the second step. When the last step of the test method is reached, the screen protector 101 either fails because of cracking at the test location 803 or a predetermined maximum load is reached. Then, in the last step, the failure load may be calculated based on the value displayed by the display 709 at the end of the test. If the screen saver 101 fails, the fail load may be a single value. Otherwise, the test method determines a lower limit on the failure load [ e.g., greater than or equal to 50 newtons (N), at least 50N ]. The crush strength of the outer peripheral edge 107, 407, 507, 607 of the screen saver 101 (as part of the apparatus comprising the screen saver 101, the screen saver 101 being mounted on the mounting surface 228 of the device 227 by the adhesive 211) can also be calculated using the area of the probe 703 that is in contact with the screen saver 101 at the end of the test. Unless otherwise indicated, the predetermined rate is 10N/min and the predetermined maximum load is greater than or equal to about 200 newtons (N). The reported average edge crush strength values are based on a failure load meter for the average of 10 crush strength measurements. In some embodiments, the screen saver 101 can include the following average crush strengths: greater than or equal to about 50 newtons (N), greater than or equal to about 100N, greater than or equal to about 150N, or greater than or equal to about 200N, less than or equal to about 500N, less than or equal to about 400N, or less than or equal to about 300N. In some embodiments, the screen protector 101 can include an average crush strength within the following range: about 50N to about 500N, about 100N to about 500N, about 150N to about 200N, about 250N to about 500N, about 50N to about 400N, about 100N to about 400N, about 150N to about 400N, about 200N to about 400N, about 50N to about 300N, about 100N to about 300N, about 150N to about 300N, about 200N to about 300N, and all ranges and subranges therebetween.
Additional details of Crush Strength testing and equipment may be found in a concurrently filed patent application entitled "Methods and Apparatus for Determining a Crush Strength of an Edge," application No. __________, which is incorporated by reference herein in its entirety.
Examples
The various embodiments will be further illustrated by the following three examples.
Example a includes a non-strengthened glass-based substrate having a length of about 143mm, a width of about 70mm, and a thickness of about 330 μm. The peripheral portion of the first major surface of the glass-based substrate includes a flat surface having a width of about 300 μm and a height of about 50 μm. The edge includes an outer peripheral portion having a height of about 230 μm (about 70% of the thickness of the glass-based substrate), and an undercut comprising a height of about 50 μm, a width of about 50 μm, and a surface roughness (Ra) of about 50 nm. The screen protector also includes an adhesive having a thickness of about 180 μm and a deviation of about 130 μm. Example a exhibited a B10 edge strength of about 325MPa and an average crush strength of the edge of about 65N.
Example B includes a non-strengthened glass-based substrate having a length of about 158mm, a width of about 78mm, and a thickness of about 350 μm. The peripheral portion of the first major surface of the glass-based substrate includes a curved surface having a width of about 440 μm and a height of about 70 μm. The edge includes an outer peripheral portion having a height of about 230 μm (about 65% of the thickness of the glass-based substrate), and an undercut comprising a height of about 50 μm, a width of about 50 μm, and a surface roughness (Ra) of about 50 nm. The screen protector also includes an adhesive having a thickness of about 120 μm and a deviation of about 80 μm. Example B exhibited a B10 edge strength of about 375MPa and an average crush strength of the edge of about 80N.
Example C is the same as example B, but example C includes a strengthened glass-based substrate having a CT of about 48 MPa. Example C exhibited a B10 edge strength of about 475MPa and an average crush strength of the edge of about 110N.
Based on these exemplary embodiments, it should be clear that strengthening the glass-based substrate can significantly increase the edge strength and crush strength of the screen protector edges. For example, the edge strength increased by about 150MPa and the crush strength increased by about 30N relative to example B due to the strengthening of example C. Without wishing to be bound by theory, both the edge strength and the crush strength are strongly dependent on the glass-based substrate thickness in the body (i.e., thickness 117), and the glass-based substrate thickness at the edge (i.e., height 219 of outer peripheral surface 205). For example, example B has a greater crush strength and edge strength than example a, and example B has a glass-based substrate thickness that is about 20 μm greater than the glass-based substrate thickness in example a. Thus, it may be advantageous to maximize the height of the outer peripheral portion of the edge of the glass-based substrate for a predetermined glass-based substrate thickness. Likewise, by polishing the undercut to include a surface roughness (Ra) of less than 50nm, both the edge strength and crush strength can be increased relative to either example a or example B. Without wishing to be bound by theory, polishing the undercut can remove surface flaws in the glass, as described by Griffith's equation, which can cause failure, and obtaining a smoother undercut surface can reduce stress concentrations in this region. Since the adhesive contacts the PTFE substrate for the four-point bend test, the edge strength of the screen protector may be substantially insensitive to adhesive thickness and deflection. On the other hand, the crush strength may be more sensitive to adhesive thickness. Without wishing to be bound by theory, lower binder thickness may limit deformation of the glass-based substrate because there is less binder that undergoes plastic deformation or displacement during the test of crush strength. For example, both the crush strength and edge strength of example B are greater than the corresponding values for example a, and the adhesive thickness and deviation for example B is less than for example a. Also, the percentage difference between the crush strengths between samples (about 23%) was greater than the percentage difference between the edge strengths between samples (about 13%), consistent with the crush strengths being more sensitive to binder properties than edge strengths.
In some embodiments, the crush strength may be higher than that of example a or example B/C when the adhesive thickness is less than the corresponding adhesive thickness of the corresponding example. Similarly, when the deviation is reduced, the crush strength may be increased relative to either example a or example B. Without wishing to be bound by theory, reducing the deviation may reduce the portion of the overhanging glass-based substrate that may contribute to failure during the crush test.
Directional terminology used herein, such as upper, lower, right, left, front, rear, top, bottom, is for reference only to the accompanying drawings and is not intended to be absolute.
The terms "comprise" and "comprise," as used herein, and variations thereof, are to be construed as synonymous and open-ended, unless otherwise indicated.
The terms "the", "a" or "an" as used herein mean "at least one" and should not be limited to "only one" unless explicitly stated to the contrary. Thus, for example, reference to "a component" includes embodiments having two or more such components, unless the context clearly indicates otherwise.
As used herein, the term "about" means that quantities, dimensions, formulas, parameters, and other quantities and characteristics are not and need not be exact, but may be approximate and/or larger or smaller as desired, such as to reflect tolerances, conversion factors, rounding off, measurement error and the like, and other factors known to those of skill in the art. When the term "about" is used to describe a value or an endpoint of a range, it is to be understood that the disclosure includes the particular value or endpoint referenced. Whether or not the numerical values or endpoints of ranges in the specification are listed as "about," the numerical values or endpoints of ranges are intended to include both embodiments: one modified with "about" and the other not modified with "about". It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint.
As used herein, the terms "substantially", "essentially" and variations thereof are intended to mean that the recited feature is equal or approximately equal to a numerical value or description. For example, a "substantially planar" surface is intended to mean that the surface is a planar or substantially planar surface. Further, as defined above, "substantially similar" is intended to mean that the two values are equal or approximately equal. In some embodiments, "substantially similar" may refer to values within about 10% of each other, such as within about 5% of each other, or within about 2% of each other.
The above embodiments and features of these embodiments are exemplary and may be provided alone or in any combination with any one or more features of other embodiments provided herein without departing from the scope of the present disclosure.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present disclosure without departing from the scope and spirit of the disclosure. Thus, it is intended that the present disclosure cover the modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalents.
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