阅读说明：本技术 一种异形切割玻璃盖板、其成型工艺以及贴合方法 (Special-shaped cutting glass cover plate, forming process and attaching method thereof ) 是由 陈健 于 2021-09-16 设计创作，主要内容包括：本发明公开了一种异形切割玻璃盖板、其成型工艺以及贴合方法,涉及3D曲面显示屏领域,成型工艺包括预切开料、热弯成型、双面减薄、异形切割、钢化处理和清洗烘干；贴合方法包括预弯：柔性屏弯曲形成弧形；上行：柔性屏的最高点与内贴合面接触；Pad上行：贴合Pad上行,到达预设位置一,此时柔性屏夹块上行并同时向外行进,到达预设位置二,此时柔性屏夹块停止移动,到达预设位置三完成柔性屏贴合形成3D曲面屏。本发明的优点在于：采用双次热弯成型工艺,有效的降低瀑布屏曲面玻璃盖板的变形内应力,提高成型良率,同时提出完美适配瀑布屏曲面玻璃盖板的贴合方法,有效的降低曲面屏在进行贴合时产生的气泡、白线以及内部微小裂纹等缺陷。(The invention discloses a specially-shaped cutting glass cover plate, a forming process and a fitting method thereof, and relates to the field of 3D curved surface display screens, wherein the forming process comprises pre-cutting, hot bending forming, double-sided thinning, specially-shaped cutting, tempering treatment, cleaning and drying; the laminating method comprises the following steps: the flexible screen is bent to form an arc shape; ascending: the highest point of the flexible screen is contacted with the inner joint surface; and (4) uplink of Pad: and (4) attaching the Pad upwards, reaching a first preset position, enabling the flexible screen clamping block to upwards move and outwards move at the same time, reaching a second preset position, stopping moving the flexible screen clamping block, and reaching a third preset position to complete the attachment of the flexible screen to form the 3D curved screen. The invention has the advantages that: the double-time hot bending forming process is adopted, the deformation internal stress of the waterfall screen curved surface glass cover plate is effectively reduced, the forming yield is improved, meanwhile, the laminating method of the waterfall screen curved surface glass cover plate which is perfectly matched is provided, and the defects of bubbles, white lines, internal micro cracks and the like generated when the curved surface screen is laminated are effectively reduced.)

1. The utility model provides a dysmorphism cutting glass apron, its characterized in that includes 3D bent limit glass apron (1), 3D bent limit glass apron (1) both sides downwarping forms bent limit (101), dysmorphism hole (102) have been seted up to 3D bent limit glass apron (1) front end, 3D bent limit glass apron (1) is interior laminating face (104) with the one side that bent limit (101) bending direction is the same, 3D bent limit glass apron (1) is outer protection face (103) with the one side that bent limit (101) bending direction is opposite.

2. The shaped-cut glass cover plate according to claim 1, characterized in that an angle A (60 < A < 85 ℃) is formed between the curved edge (101) and the 3D curved edge glass cover plate (1).

3. A process for forming a 3D curved glass cover plate, suitable for the profile-cut glass cover plate of claims 1-2, comprising the steps of:

pre-cutting and cutting: cutting a whole glass plate into a plurality of glass substrates according to a preset size;

hot bending and forming: placing the glass substrate into a hot bending mould, preheating the glass substrate to 200-300 ℃ in a hot bending machine, then preserving heat for 20-30 min, heating to 600-700 ℃ for primary hot bending for 20-25 min, enabling the bending angle of the side edge of the glass substrate to reach 0.5A, then preserving heat for 15-25 min at 550-600 ℃, heating to 600-700 ℃ for secondary hot bending for 25-45 min, enabling the bending angle of the side edge of the glass substrate to reach A, then preserving heat for 30-45 min at 550-600 ℃, and cooling to form a 3D curved-edge glass substrate;

thinning the two sides: putting the 3D curved edge glass substrate into acid liquor for double-sided thinning;

and (3) special-shaped cutting: carrying out laser cutting on the edge of the thinned 3D curved edge glass substrate to form a special-shaped hole (102), controlling the edge breakage of the 3D curved edge glass substrate to be less than 5 micrometers, then carrying out edge sweeping treatment on the 3D curved edge glass substrate to ensure that no burrs are formed on the edge of the 3D curved edge glass substrate, then placing the 3D curved edge glass substrate in an etching jig, soaking the 3D curved edge glass substrate in HF solution to carry out edge etching, and forming a 3D curved edge glass cover plate (1);

tempering treatment: placing the 3D curved-edge glass cover plate in a toughening jig, then moving the 3D curved-edge glass cover plate into a salt bath solution at 400 ℃, and carrying out replacement for 10-12 min to ensure that alkali metal ions with smaller sizes in the 3D curved-edge glass cover plate (1) are replaced, and a larger alkali metal ion layer is formed by accumulation on the surface, so that a stress of 600-750 MPa is generated, and a toughened layer is formed;

cleaning and drying: and placing the 3D curved-edge glass cover plate subjected to toughening treatment in an ultrasonic cleaning and drying all-in-one machine, cleaning surface stains by using ultrasonic waves, washing the surface by using running water, and then drying the 3D curved-edge glass cover plate.

4. The forming process of the 3D curved glass cover plate according to claim 3, wherein: the specific operation steps of the double-sided thinning are as follows; spraying HF with the concentration of 30% -35% on the surface of the 3D curved edge glass substrate, wherein the spraying flow is 500-1000ppm, and the spraying time is 750s, so that the 3D curved edge glass cover plate is thinned to 50 mu m.

5. A method for attaching a 3D curved screen, which is suitable for the profile-cut glass cover plate according to claims 1-2, and comprises a 3D curved-edge glass cover plate (1), a flexible screen clamping block (2), a flexible screen (3), and an attaching Pad (4), and is characterized by comprising the following steps:

pre-bending: the flexible screen (3) is placed in the flexible screen clamping block (2), and the flexible screen clamping block (2) moves inwards for a certain distance, so that the flexible screen (3) is bent to form an arc shape;

ascending: the flexible screen clamping block (2) moves upwards for a certain distance, so that the highest point of the flexible screen (3) is just contacted with the inner attaching surface of the 3D curved edge glass cover plate (1);

and (4) uplink of Pad: laminating Pad (4) goes upward, reaches preset position one, and flexible screen clamp splice (2) go upward and outwards march simultaneously this moment, and laminating Pad (4) continue to go upward, reaches preset position two, and flexible screen clamp splice (2) stop moving this moment, and laminating Pad (4) continue to go upward, reaches preset position three and accomplishes the laminating of flexible screen and form the 3D curved surface screen.

6. The attaching method of the 3D curved-surface screen, according to claim 5, is characterized in that the first preset position is that the highest point of the upper surface of the attaching Pad (4) is in contact with the lower part of the highest point of the flexible screen (3), the second preset position is that the upper surface of the attaching Pad (4) is in full contact with the flexible screen (3), and the third preset position is that the attaching Pad (4) completely attaches the flexible screen (3) to the inner attaching surface (104) of the 3D curved-edge glass cover plate (1).

7. The attaching method of a 3D curved screen according to claim 6, wherein a flexible screen clamping groove (201) is formed in the inner side edge of the flexible screen clamping block (2), and the edge of the flexible screen (3) is arranged inside the flexible screen clamping groove (201).

8. The method for attaching a 3D curved screen according to claim 7, wherein the upper surface of the attached Pad (4) is a curved surface, and the curvature of the upper surface of the attached Pad (4) is larger than the bending curvature of the flexible screen (3) in the pre-bending step.

9. The method for attaching a 3D curved panel according to claim 8, wherein the distance of the flexible panel clamping block (2) from the first preset position to the second preset position is H1, the upward speed is V1, the depth of the flexible panel clamping groove (201) is D, the outward speed is V2, the distance from the highest point to the lowest point of the upper surface of the attaching Pad (4) is H2, the upward speed of the attaching Pad (4) from the first preset position to the preset position is V3, and the H1, the V1, the D, V2, the H2 and the V3 meet the requirements that the distance from the highest point to the lowest point of the upper surface of the attaching Pad (4) is H2, and the upward speed of the attaching Pad from the first preset position to the preset position is V3

。

10. The attaching method of a 3D curved screen according to claim 9, wherein two side edges of the upper surface of the attaching Pad (4) are provided with arc-shaped side edges (401), the upper end of the front side surface of the Pad (4) is provided with a special-shaped groove (402), and the attaching Pad (4) is made of silica gel.

Technical Field

The invention relates to the field of 3D curved surface display screens, in particular to a specially-shaped cutting glass cover plate, a forming process and a fitting method thereof.

Background

The curved surface display screen is the display screen that forms with the side bending on laminating the flexible screen to 3D curved surface glass apron, 3D curved surface glass has outstanding outward appearance visual sense and hand touch sense, people's pursuit is obtained, it accords with 3C product design demand simultaneously, widely used in various 3C product designs, such as household electrical appliances panel, smart mobile phone, intelligent wrist-watch, panel computer, wearable intelligent product, instrument board, when being used for the cell-phone, the holistic crooked design of curved surface screen is favorable to gripping, laminate better with the palm radian, reduce the distance that the thumb touched the screen when one-hand operation, help promoting the experience of transversely striding the screen operation under the jumbo size screen.

The screen with the bending angle of the curved edge of the 3D curved-surface glass being larger than 45 degrees is generally called a waterfall screen, and the waterfall screen curved-surface glass is large in bending angle of the curved edge, so that the product yield in the manufacturing process is low, the impact resistance of the finished product is poor, white lines are easy to occur when the curved-surface screens are attached, and the defects of micro cracks and the like are easy to occur in the flexible screens, so that the manufacturing yield is greatly reduced.

Disclosure of Invention

In order to solve the technical problems, the technical scheme solves the problems that a screen with a bent edge bending angle larger than 45 degrees of 3D curved-surface glass is generally called a waterfall screen, the curved-edge bending angle of the waterfall screen curved-surface glass is large, the product yield in the manufacturing process is low, the impact resistance of a finished product is poor, white lines are prone to occurring when the curved-surface screen is attached, micro cracks are prone to occurring inside a flexible screen, and the manufacturing process yield is greatly reduced.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:

the utility model provides a dysmorphism cutting glass apron, includes that 3D curves limit glass apron, 3D curves limit glass apron both sides downwarping and forms curved limit, 3D curves limit glass apron front end and has seted up special-shaped hole, 3D curves limit glass apron and the same one side of the crooked direction in curved limit is interior laminating face, 3D curves limit glass apron and the crooked opposite direction's in curved limit one side be outer protection face.

Preferably, an angle A is formed between the curved edge and the 3D curved edge glass cover plate (60 degrees < A < 85 degrees).

Further, a forming process of the 3D curved-surface glass cover plate is provided, and the forming process is suitable for the special-shaped cutting glass cover plate and is characterized by comprising the following steps:

pre-cutting and cutting: cutting a whole glass plate into a plurality of glass substrates according to a preset size;

hot bending and forming: placing the glass substrate into a hot bending mould, preheating the glass substrate to 200-300 ℃ in a hot bending machine, then preserving heat for 20-30 min, heating to 600-700 ℃ for primary hot bending for 20-25 min, enabling the bending angle of the side edge of the glass substrate to reach 0.5A, then preserving heat for 15-25 min at 550-600 ℃, heating to 600-700 ℃ for secondary hot bending for 25-45 min, enabling the bending angle of the side edge of the glass substrate to reach A, then preserving heat for 30-45 min at 550-600 ℃, and cooling to form a 3D curved-edge glass substrate;

thinning the two sides: putting the 3D curved edge glass substrate into acid liquor for double-sided thinning;

and (3) special-shaped cutting: carrying out laser cutting on the edge of the thinned 3D curved edge glass substrate to form a special-shaped hole, controlling the edge breakage of the edge of the 3D curved edge glass substrate to be less than 5 micrometers, then carrying out edge sweeping treatment on the 3D curved edge glass substrate to ensure that no burrs are formed on the edge of the 3D curved edge glass substrate, then placing the 3D curved edge glass substrate in an etching jig, soaking the 3D curved edge glass substrate in HF solution to carry out edge etching, and forming a 3D curved edge glass cover plate;

tempering treatment: placing the 3D curved-edge glass cover plate in a toughening jig, and then moving the 3D curved-edge glass cover plate into a salt bath solution at 400 ℃ for 10-12 min to replace alkali metal ions with smaller sizes in the 3D curved-edge glass cover plate, so that a larger alkali metal ion layer is formed by accumulation on the surface, and further a stress of 600-750 MPa is generated to form a toughening layer;

cleaning and drying: and placing the 3D curved-edge glass cover plate subjected to toughening treatment in an ultrasonic cleaning and drying all-in-one machine, cleaning surface stains by using ultrasonic waves, washing the surface by using running water, and then drying the 3D curved-edge glass cover plate.

Optionally, the specific operation steps of thinning the two sides are as follows; spraying HF with the concentration of 30% -35% on the surface of the 3D curved edge glass substrate, wherein the spraying flow is 500-1000ppm, and the spraying time is 750s, so that the 3D curved edge glass cover plate is thinned to 50 mu m.

Still further, provide a laminating mode of 3D curved surface screen, be applicable to foretell dysmorphism cutting glass apron, including curved limit glass apron of 3D, flexible screen clamp splice, flexible screen and laminating Pad, its characterized in that, the step is as follows:

pre-bending: placing the flexible screen in a flexible screen clamping block, wherein the flexible screen clamping block moves inwards for a certain distance to bend the flexible screen into an arc shape;

ascending: the flexible screen clamping block moves upwards for a certain distance, so that the highest point of the flexible screen is just in contact with the inner attaching surface of the 3D curved-edge glass cover plate;

and (4) uplink of Pad: the laminating Pad goes upward, reaches preset position one, and flexible screen clamp splice goes upward and outwards marchs simultaneously this moment, and laminating Pad continues to go upward, reaches preset position two, and flexible screen clamp splice stop to remove this moment, and laminating Pad continues to go upward, reaches preset position three and accomplishes the laminating of flexible screen and form the 3D curved surface screen.

Carefully selecting, the highest point of the upper surface of the attached Pad is contacted with the lower part of the highest point of the flexible screen, the second preset position is completely contacted with the flexible screen, and the third preset position is completely contacted with the inner attaching surface of the 3D curved-edge glass cover plate by the attached Pad.

Carefully, flexible screen clamp groove has been seted up to the inboard side of flexible screen clamp splice, flexible screen edge sets up in flexible screen clamp inslot portion.

Carefully selecting, the upper surface of the attaching Pad is an arc surface, and the radian of the upper surface of the attaching Pad is larger than the bending radian of the flexible screen in the pre-bending step.

Carefully selecting, the upward distance from the first preset position to the second preset position of the flexible screen clamping block is H1, the upward speed is V1, the depth of the flexible screen clamping groove is D, the outward speed is V2, the distance from the highest point to the lowest point of the upper surface of the attaching Pad is H2, the upward speed from the first preset position to the preset position of the attaching Pad is V3, and the H1, the V1, the D, V2, the H2 and the V3 meet the requirements

Carefully selecting, laminating Pad upper surface both sides limit is provided with the arc side, the dysmorphism groove has been seted up to Pad front side surface upper end, and laminating Pad is made by silica gel.

Compared with the prior art, the invention has the advantages that:

1) the waterfall screen curved surface glass adopted by the invention adopts a double-heat-bending forming process, the curved edge is subjected to heat bending at a half angle by one-time forming, then heat preservation is carried out, the formed deformation stress in the first heat bending is eliminated, then the second heat bending is carried out, the curved edge is subjected to heat bending to a preset angle, and the waterfall screen curved surface glass cover plate is formed, so that the forming process of the waterfall screen curved surface glass cover plate is optimized, the forming yield of the glass cover plate is greatly improved, the deformation internal stress of the waterfall screen curved surface glass cover plate can be effectively reduced, the strength of the waterfall screen curved surface glass cover plate is improved, and the performance of the waterfall screen curved surface glass cover plate is improved;

2) the laminating mode of the curved screen is perfectly matched with the laminating of the curved glass cover plate of the waterfall screen, the flexible screen clamping block gradually moves upwards and releases the flexible screen in the laminating process, the tensile stress on the flexible screen in the laminating process is reduced, the defects of bubbles, white lines, internal tiny cracks and the like generated in the laminating process of the curved screen are effectively reduced, the laminating yield of the waterfall curved screen is greatly improved, the production cost of the waterfall curved screen is reduced, and great economic benefits are achieved.

Drawings

FIG. 1 is a schematic perspective view of a profile-cut glass cover plate according to the present invention;

FIG. 2 is a front view of a profile cut glass cover plate according to the present invention;

FIG. 3 is a schematic view of an initial position of a bonding method according to the present invention;

FIG. 4 is a schematic diagram of a preset position of a bonding method according to the present invention;

FIG. 5 is a schematic diagram of a second preset position of the bonding method according to the present invention;

FIG. 6 is a schematic diagram of a preset position three of the bonding method according to the present invention;

fig. 7 is a schematic perspective view of a bonding Pad in the bonding method according to the present invention;

FIG. 8 is a schematic structural view of a flexible screen clamping block in a bonding manner according to the present invention;

FIG. 9 is a schematic diagram of a middle white line defect in a conventional bonding method;

FIG. 10 is a schematic diagram illustrating the positions of double-sided micro cracks in a conventional bonding method.

The reference numbers in the figures are:

1. a 3D curved-edge glass cover plate; 101. bending edges; 102. a profiled hole; 103. an outer protective surface; 104. an inner joint surface; 2. a flexible screen clamping block; 201. a flexible screen clip slot; 3. a flexible screen; 4. bonding the Pad; 401. an arc-shaped side edge; 402. a special-shaped groove.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

Example one

A forming process of a 3D curved glass cover plate comprises the following steps:

pre-cutting and cutting: cutting a whole glass plate into a plurality of glass substrates according to a preset size;

hot bending and forming: placing a glass substrate into a hot bending mold, then placing the glass substrate into a hot bending machine, preheating the glass substrate to 200 ℃, then preserving heat for 20min, then heating the glass substrate to 600 ℃ for primary hot bending for 20min to enable the bending angle of the side edge of the glass substrate to reach 30 ℃, then preserving heat for 15min at 550 ℃, then heating the glass substrate to 600 ℃ for secondary hot bending for 25min to enable the bending angle of the side edge of the glass substrate to reach 60 ℃, then preserving heat for 30min at 550 ℃, and cooling to form a 3D bent-edge glass substrate;

thinning the two sides: putting the 3D curved-edge glass substrate into acid liquor for double-sided thinning, wherein the specific operation steps of double-sided thinning are as follows; spraying HF with the concentration of 30% on the surface of the 3D curved edge glass substrate, wherein the spraying flow is 500ppm, the spraying time is 750s, and the 3D curved edge glass cover plate is thinned to 50 microns;

and (3) special-shaped cutting: performing laser cutting on the edge of the thinned 3D curved edge glass substrate to form a special-shaped hole 102, controlling the edge breakage of the edge of the 3D curved edge glass substrate to be less than 5 micrometers, then performing edge sweeping treatment on the 3D curved edge glass substrate to ensure that no burrs are formed on the edge of the 3D curved edge glass substrate, then placing the 3D curved edge glass substrate in an etching jig, soaking the 3D curved edge glass substrate in HF solution to perform edge etching, and forming a 3D curved edge glass cover plate;

tempering treatment: placing the 3D curved-edge glass cover plate in a toughening jig, and then moving the 3D curved-edge glass cover plate into a 400 ℃ salt bath solution for 10min to replace small alkali metal ions in the 3D curved-edge glass cover plate 1, and accumulating the small alkali metal ions on the surface to form a large alkali metal ion layer, so that a stress of 600-750 MPa is generated to form a toughening layer;

cleaning and drying: and placing the 3D curved-edge glass cover plate subjected to toughening treatment in an ultrasonic cleaning and drying all-in-one machine, cleaning surface stains by using ultrasonic waves, washing the surface by using running water, and then drying the 3D curved-edge glass cover plate.

The resulting 60 ° curved edge glass cover plate was designated sample a.

Example two

A forming process of a 3D curved glass cover plate comprises the following steps:

pre-cutting and cutting: cutting a whole glass plate into a plurality of glass substrates according to a preset size;

hot bending and forming: placing a glass substrate into a hot bending mold, then placing the glass substrate into a hot bending machine, preheating the glass substrate to 250 ℃, keeping the temperature for 25min, then heating the glass substrate to 650 ℃ for carrying out primary hot bending for 25min to enable the bending angle of the side edge of the glass substrate to reach 37 ℃, then keeping the temperature at 550 ℃ for 20min, then heating the glass substrate to 600 ℃ for carrying out secondary hot bending for 35min to enable the bending angle of the side edge of the glass substrate to reach 75 ℃, then keeping the temperature at 600 ℃ for 40min, and cooling to form a 3D bent-edge glass substrate;

thinning the two sides: putting the 3D curved-edge glass substrate into acid liquor for double-sided thinning, wherein the specific operation steps of double-sided thinning are as follows; spraying HF with the concentration of 30% on the surface of the 3D curved edge glass substrate, wherein the spraying flow is 750ppm, the spraying time is 750s, and the 3D curved edge glass cover plate is thinned to 50 microns;

and (3) special-shaped cutting: performing laser cutting on the edge of the thinned 3D curved edge glass substrate to form a special-shaped hole 102, controlling the edge breakage of the edge of the 3D curved edge glass substrate to be less than 5 micrometers, then performing edge sweeping treatment on the 3D curved edge glass substrate to ensure that no burrs are formed on the edge of the 3D curved edge glass substrate, then placing the 3D curved edge glass substrate in an etching jig, soaking the 3D curved edge glass substrate in HF solution to perform edge etching, and forming a 3D curved edge glass cover plate 1;

tempering treatment: placing the 3D curved-edge glass cover plate in a toughening jig, and then moving the 3D curved-edge glass cover plate into a 400 ℃ salt bath solution for 12min to replace small alkali metal ions in the 3D curved-edge glass cover plate 1, and accumulating the small alkali metal ions on the surface to form a large alkali metal ion layer, so that a stress of 600-750 MPa is generated to form a toughening layer;

cleaning and drying: and placing the 3D curved-edge glass cover plate subjected to toughening treatment in an ultrasonic cleaning and drying all-in-one machine, cleaning surface stains by using ultrasonic waves, washing the surface by using running water, and then drying the 3D curved-edge glass cover plate.

The resulting 75 ° curved edge glass cover plate was designated sample B.

EXAMPLE III

A forming process of a 3D curved glass cover plate comprises the following steps:

pre-cutting and cutting: cutting a whole glass plate into a plurality of glass substrates according to a preset size;

hot bending and forming: placing a glass substrate into a hot bending mold, then placing the glass substrate into a hot bending machine, preheating the glass substrate to 300 ℃, then preserving heat for 30min, then heating the glass substrate to 700 ℃ for carrying out primary hot bending for 25min to enable the bending angle of the side edge of the glass substrate to reach 43 ℃, then preserving heat for 25min at 600 ℃, then heating the glass substrate to 700 ℃ for carrying out secondary hot bending for 45min to enable the bending angle of the side edge of the glass substrate to reach 85 ℃, then preserving heat for 45min at 600 ℃, and forming a 3D bent-edge glass substrate after cooling;

thinning the two sides: putting the 3D curved-edge glass substrate into acid liquor for double-sided thinning, wherein the specific operation steps of double-sided thinning are as follows; spraying HF with the concentration of 35% on the surface of the 3D curved edge glass substrate, wherein the spraying flow is 1000ppm, the spraying time is 750s, and the 3D curved edge glass cover plate is thinned to 50 microns;

and (3) special-shaped cutting: performing laser cutting on the edge of the thinned 3D curved edge glass substrate to form a special-shaped hole 102, controlling the edge breakage of the edge of the 3D curved edge glass substrate to be less than 5 micrometers, then performing edge sweeping treatment on the 3D curved edge glass substrate to ensure that no burrs are formed on the edge of the 3D curved edge glass substrate, then placing the 3D curved edge glass substrate in an etching jig, soaking the 3D curved edge glass substrate in HF solution to perform edge etching, and forming a 3D curved edge glass cover plate 1;

tempering treatment: placing the 3D curved-edge glass cover plate in a toughening jig, and then moving the 3D curved-edge glass cover plate into a 400 ℃ salt bath solution for 12min to replace small alkali metal ions in the 3D curved-edge glass cover plate 1, and accumulating the small alkali metal ions on the surface to form a large alkali metal ion layer, so that a stress of 600-750 MPa is generated to form a toughening layer;

cleaning and drying: and placing the 3D curved-edge glass cover plate subjected to toughening treatment in an ultrasonic cleaning and drying all-in-one machine, cleaning surface stains by using ultrasonic waves, washing the surface by using running water, and then drying the 3D curved-edge glass cover plate.

The resulting 75 ° curved edge glass cover plate was marked as sample C.

Example four

The utility model provides a laminating mode of 3D curved screen, includes that 3D curved limit glass apron 1, flexible screen clamp splice 2, flexible screen 3 and laminating Pad4, the material of laminating Pad4 is made by silica gel, the step as follows:

pre-bending: the flexible screen 3 is placed in the flexible screen clamping block 2, and the flexible screen clamping block 2 moves inwards for a certain distance, so that the flexible screen 3 is bent to form an arc shape;

ascending: the flexible screen clamping block 2 moves upwards for a certain distance, so that the highest point of the flexible screen 3 is just in contact with the inner attaching surface of the 3D curved edge glass cover plate 1;

and (4) uplink of Pad: the flexible screen clamping block 2 moves upwards and outwards at the first preset position, the flexible screen clamping block 2 moves upwards and outwards at the same time, the laminating Pad4 continues to move upwards and reaches the second preset position, the flexible screen clamping block 2 stops moving at the moment, the laminating Pad4 continues to move upwards and reaches the third preset position to complete the laminating of the flexible screen to form a 3D curved screen, the first preset position is that the highest point of the upper surface of the laminating Pad4 contacts with the lower side of the highest point of the flexible screen 3, the second preset position is that the upper surface of the laminating Pad4 is completely contacted with the flexible screen 3, the third preset position is that the laminating Pad4 completely laminates the flexible screen 3 on the inner laminating surface 104 of the 3D curved-edge glass cover plate 1, the distance from the highest point to the lowest point of the upper surface of the laminating Pad4 is H2, the distance from the first preset position to the second preset position to the flexible screen clamping block 2 is H1, the ascending speed is V1, the depth of the flexible screen clamping groove 201 is D, the outward speed is V2, the distance from the highest point to the lowest point of the laminating Pad 3, h1, V1, D, V2, H2 and V3 satisfy

，

Not only ensures that the flexible screen clamping block 2 can completely release the flexible screen 3 when the upper surface of the attaching Pad4 is completely contacted with the flexible screen 3.

The flexible screen clamp groove 201 has been seted up to the inboard edge of flexible screen clamp splice 2, and 3 edges of flexible screen set up in the flexible screen clamp groove 201 inside.

The upper surface of the attaching Pad4 is an arc surface, and the radian of the upper surface of the attaching Pad4 is larger than the bending radian of the flexible screen 3 in the pre-bending step.

Laminating Pad4 upper surface both sides limit is provided with arc side 401, dysmorphism groove 402 has been seted up to Pad4 front side surface upper end, arc side 401 guarantees that laminating Pad4 can exert abundant laminating power to curved limit when laminating, guarantee the laminating firmness of curved surface screen side, dysmorphism groove 402 corresponds with dysmorphism hole 102 position, the stress of dysmorphism hole 102 department is less when having guaranteed the laminating, avoid the flexible screen of dysmorphism hole 102 position department to receive great laminating stress and appear tiny crack, the quality of laminating is improved.

The curved panels obtained by laminating the sample A, B, C according to this example were designated as samples a1, B1, and C1.

Comparative example 1

The utility model provides a laminating mode of 3D curved screen, includes that 3D curved limit glass apron 1, flexible screen clamp splice 2, flexible screen 3 and laminating Pad4, the step is as follows:

pre-bending: the flexible screen 3 is placed in the flexible screen clamping block 2, and the flexible screen clamping block 2 moves inwards for a certain distance, so that the flexible screen 3 is bent to form an arc shape;

ascending: the flexible screen clamping block 2 moves upwards for a certain distance, so that the highest point of the flexible screen 3 is just in contact with the inner attaching surface of the 3D curved edge glass cover plate 1;

and (4) uplink of Pad: and (5) making the flexible screen 3 completely fit on the inner fit surface 104 of the upper 3D curved-edge glass cover plate 1 by fitting the Pad4 upwards.

Curved panels of sample A, B, C laminated according to this comparative example were designated as samples A2, B2, and C2.

Comparative example No. two

The utility model provides a laminating mode of 3D curved screen, includes that 3D curved limit glass apron 1, flexible screen clamp splice 2, flexible screen 3 and laminating Pad4, the step is as follows:

pre-bending: the flexible screen 3 is placed in the flexible screen clamping block 2, and the flexible screen clamping block 2 moves inwards for a certain distance, so that the flexible screen 3 is bent to form an arc shape;

ascending: the flexible screen clamping block 2 moves upwards for a certain distance, so that the highest point of the flexible screen 3 is just in contact with the inner attaching surface of the 3D curved edge glass cover plate 1;

and (4) uplink of Pad: and the attaching Pad4 moves upwards to reach a first preset position, the flexible screen clamping block 2 moves outwards at the moment, the attaching Pad4 continues to move upwards until the flexible screen 3 is completely attached to the inner attaching surface 104 of the 3D curved-edge glass cover plate 1, and the first preset position is that the highest point of the upper surface of the attaching Pad4 is in contact with the lower surface of the highest point of the flexible screen 3.

Curved panels of sample A, B, C laminated according to this comparative example were designated as samples A3, B3, and C3.

The samples A1, B1, C1, A2, B2, C2, A3, B3 and C3 were subjected to appearance inspection and internal micro-crack detection, and the results are as follows:

sample numbering	Middle white line	Micro cracks on both sides
			A1	Is free of	Is free of
B1	Is free of	Is free of
			C1	Is free of	Is free of
A2	Is provided with	Is provided with
			B2	Is provided with	Is provided with
C2	Is provided with	Is provided with
			A3	Is free of	Is provided with
B3	Is free of	Is provided with
			C3	Is provided with	Is provided with

According to the laminating mode, in the laminating process, the flexible screen clamping blocks gradually move upwards and release the flexible screen, so that the tensile stress applied to the flexible screen in the laminating process is reduced, and meanwhile, when the flexible screen is completely released, the flexible screen basically contacts with the lower edge of the curved edge, so that the collision between the flexible screen and the curved-edge glass cover plate when the flexible screen rebounds is reduced, the defects of bubbles, white lines, internal micro cracks and the like generated when the curved-surface screen is laminated are effectively reduced, the laminating yield of the waterfall curved-surface screen is greatly improved, the production cost of the waterfall curved-surface screen is reduced, and the laminating mode has great economic benefits.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.