阅读说明：本技术 显示面板、切割面板和显示装置 (Display panel, cutting panel and display device ) 是由 高转 于 2021-06-30 设计创作，主要内容包括：本申请公开了一种显示面板、切割面板和显示装置。本申请实施例的显示面板具有显示区、封装区和成型区,封装区围绕显示区设置,成型区位于封装区的远离显示区的一侧并围绕封装区设置。显示面板包括：第一基板和第二基板；垫层金属,位于封装区且设置于第一基板和第二基板之间；第一无机层,设置于第二基板和垫层金属之间,第一无机层包括第一边缘,第一边缘位于成型区；以及第二无机层,设置于第二基板和第一无机层之间,在显示区指向成型区的方向上,第二无机层包括依次设置的主体部、封边部和延伸部,主体部覆盖于第一无机层,封边部连接主体部和延伸部且包裹第一边缘,延伸部至少位于成型区。本申请实施例能够提高封装性能,减少显示问题。(The application discloses display panel, cutting panel and display device. The display panel of this application embodiment has display area, encapsulation area and shaping area, and the encapsulation area sets up around the display area, and the shaping area is located one side of keeping away from the display area of encapsulation area and sets up around the encapsulation area. The display panel includes: a first substrate and a second substrate; the cushion metal is positioned in the packaging area and arranged between the first substrate and the second substrate; the first inorganic layer is arranged between the second substrate and the cushion metal and comprises a first edge, and the first edge is positioned in the forming area; and the second inorganic layer is arranged between the second substrate and the first inorganic layer, and comprises a main body part, a sealing part and an extension part which are sequentially arranged in the direction of the display area pointing to the forming area, the main body part covers the first inorganic layer, the sealing part is connected with the main body part and the extension part and wraps the first edge, and the extension part is at least positioned in the forming area. The embodiment of the application can improve the packaging performance and reduce the display problem.)

1. A display panel having a display area, a package area and a molding area, the package area surrounding the display area, the molding area being located on a side of the package area away from the display area and surrounding the package area, the display panel comprising:

the display device comprises a first substrate and a second substrate, wherein the first substrate and the second substrate are oppositely arranged;

the cushion metal is positioned in the packaging area and is arranged between the first substrate and the second substrate;

a first inorganic layer disposed between the second substrate and the pad metal, the first inorganic layer including a first edge, the first edge being located in the molding region; and

the second inorganic layer, set up in the second base plate with between the first inorganic layer the display area is directional in the direction in shaping district, the inorganic layer of second is including the main part, the edge sealing portion and the extension that set gradually, the main part cover in first inorganic layer, edge sealing portion connects the main part with extension and parcel first edge, the extension is located at least the shaping district.

2. The display panel according to claim 1, wherein the molding region has a second edge at an end away from the encapsulation region; in the direction that the display area points to the forming area, the extending portion and the second edge have a first preset distance.

3. The display panel according to claim 1, wherein the extending portion has a thinned portion at least at an end portion away from the main body portion, the thinned portion having a thickness smaller than that of the main body portion.

4. The display panel of claim 1, wherein the extension comprises a plurality of sub-extensions arranged at intervals.

5. The display panel according to claim 4, wherein the sub-extensions are sequentially arranged along a direction of the display area toward the molding area; alternatively, the first and second electrodes may be,

the sub-extension parts are sequentially arranged along the circumferential direction of the forming area.

6. The display panel according to claim 1, further comprising a third inorganic layer disposed between the first substrate and the underlayer metal, wherein the extension portion is located on a side of the third inorganic layer away from the first substrate, and wherein the extension portion is in contact with at least a portion of the third inorganic layer.

7. The display panel according to claim 1, wherein a material of the second inorganic layer is the same as a material of the third inorganic layer.

8. The display panel according to claim 1, wherein the first inorganic layer comprises a first sub inorganic layer and a second sub inorganic layer which are adjacently disposed, and a material of the first sub inorganic layer is different from a material of the second sub inorganic layer.

9. The display panel according to claim 1, wherein the encapsulation region comprises a first flat region and a first corner region connected to the first flat region;

the cushion layer metal comprises a first cushion layer metal and a second cushion layer metal which are arranged at intervals, the first cushion layer metal is positioned in the first corner region, and the second cushion layer metal is positioned in the first straight region;

the first inorganic layer fills a gap between the first pad layer metal and the second pad layer metal.

10. The display panel of claim 9, wherein the first underlayer metal comprises a plurality of separately disposed first subpad layer metals;

a plurality of said first subpad layer metals arranged radially of said first corner region; alternatively, a plurality of the first subpad layer metals are arranged along the circumference of the first corner region.

11. The display panel of claim 1, wherein the molding region comprises a second flat region and a second corner region connected to the second flat region, and at least a portion of the first edge is located in the second corner region.

12. A cut panel comprising the display panel of any one of claims 1 to 10;

the cutting panel further comprises a grinding stripping area, and the grinding stripping area is located on one side, far away from the packaging area, of the forming area.

13. The display panel according to claim 12, wherein the molding region comprises a second flat region and a second corner region connected to the second flat region;

the grinding stripping area is positioned on one side of the second corner area far away from the packaging area.

14. Cutting panel according to claim 12 or 13, characterized in that at least part of the extension is located in the abrasive peeling zone.

15. The cutting panel of claim 14, wherein the abrasive peel zone has a third edge on a side remote from the profiled zone; the third edge is located on one side of the extension part far away from the display area.

16. A display device characterized by comprising the display panel according to any one of claims 1 to 15.

Technical Field

The application relates to the field of display, in particular to a display panel, a cutting panel and a display device.

Background

With the continuous development of display technology, the requirements of consumers on display panels are continuously improved, and various display panels are developed in a large number and are rapidly developed, such as bang screens, notch screens, intelligent wearable devices and the like.

In the display panel, a Frit is used for packaging a display panel packaging area, the Frit is subjected to laser melting and curing for packaging, and in order to improve the laser utilization rate and the Frit melting uniformity, a Frit Metal is arranged in the packaging area. After the display panel is cut, in order to avoid corner chipping and edge breaking caused by cutting, the cutting edge is ground, however, the edge film layer is cracked due to stress generated by grinding, water and oxygen enter the film layer to corrode the cushion metal, so that packaging failure is further caused for a long time, and the display problem is caused.

Disclosure of Invention

The embodiment of the application provides a display panel, a cutting panel and a display device, which can improve the packaging performance and reduce the display problem.

In a first aspect, an embodiment of the present application provides a display panel, which has a display area, a package area and a molding area, wherein the package area is disposed around the display area, and the molding area is located on a side of the package area away from the display area and disposed around the package area.

The display panel includes:

the first substrate and the second substrate are oppositely arranged;

the cushion metal is positioned in the packaging area and arranged between the first substrate and the second substrate;

the first inorganic layer is arranged between the second substrate and the cushion metal and comprises a first edge, and the first edge is positioned in the forming area; and

the second inorganic layer is arranged between the second substrate and the first inorganic layer, and comprises a main body part, a sealing part and an extension part which are sequentially arranged in the direction of the display area pointing to the forming area, the main body part covers the first inorganic layer, the sealing part is connected with the main body part and the extension part and wraps the first edge, and the extension part is at least located in the forming area.

In a second aspect, embodiments of the present application provide a cutting panel, which includes the display panel of the first aspect. The cutting panel further comprises a grinding stripping area, and the grinding stripping area is located on one side, far away from the packaging area, of the forming area.

In a third aspect, an embodiment of the present application provides a display device, which includes the display panel of the first aspect.

In the embodiment of the application, the first inorganic layer can protect the metal of the cushion layer, and the first edge of the first inorganic layer can block water and oxygen, so that the corrosion of the water and oxygen to the metal of the cushion layer is reduced. The second inorganic layer covers the first inorganic layer and wraps the first edge of the first inorganic layer, and can prevent water and oxygen from corroding the first inorganic layer and the cushion metal. The first inorganic layer and the second inorganic layer can protect the cushion layer metal in multiple layers, effectively reduce the corrosion of water oxygen to the cushion layer metal, and improve the packaging performance of the display panel.

In the direction that the display area points to the forming area, the second inorganic layer is provided with an extension part on the outer side of the first inorganic layer, and the extension part enables a certain distance to be reserved between the first edge of the first inorganic layer and the second edge of the forming area, which is far away from the display area, namely, in the grinding process, the first inorganic layer cannot be directly ground by grinding equipment, so that the stress of the first inorganic layer in the grinding process can be reduced, and the risk of cracks on the first edge of the first inorganic layer is reduced. In addition, the sealing edge part of the second inorganic layer wraps the first edge of the first inorganic layer, so that the second inorganic layer can limit and protect the first edge, and the risk of cracks on the first edge of the first inorganic layer is reduced. The first inorganic layer can block water and oxygen, and reduce the corrosion of water and oxygen to the cushion metal, so that the packaging performance of the display panel can be ensured even if the second inorganic layer cracks.

Drawings

Other features, objects, and advantages of the present application will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.

Fig. 1 is a schematic structural diagram of a display panel according to some embodiments of the present disclosure;

FIG. 2 is a schematic partial cross-sectional view of the display panel shown in FIG. 1 taken along line L1-L1;

FIG. 3 is a schematic partial cross-sectional view of the display panel shown in FIG. 1 taken along line L2-L2;

FIG. 4 is another schematic partial cross-sectional view of the display panel shown in FIG. 1 taken along line L1-L1;

FIG. 5 is yet another schematic partial cross-sectional view of the display panel shown in FIG. 1 taken along line L1-L1;

FIG. 6 is a further partial cross-sectional schematic view of the display panel shown in FIG. 1 taken along line L1-L1;

FIG. 7 is an enlarged schematic view of the display panel shown in FIG. 1 at the circular frame S;

FIG. 8 is another enlarged schematic view of the display panel shown in FIG. 1 at the circle frame S;

FIG. 9 is a further enlarged schematic view of the display panel shown in FIG. 1 at the circle frame S;

FIG. 10 is a further enlarged schematic view of the display panel shown in FIG. 1 at the circle frame S;

FIG. 11 is another enlarged schematic view of the display panel shown in FIG. 1 at the circle frame S;

FIG. 12 is a schematic structural view of a cut panel provided in some embodiments of the present application;

FIG. 13 is a schematic partial cross-sectional view of the cutting panel shown in FIG. 12 taken along line L3-L3;

FIG. 14 is another schematic partial cross-sectional view of the cutting panel shown in FIG. 12 taken along line L3-L3;

fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present application.

Detailed Description

Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.

Fig. 1 is a schematic structural diagram of a display panel according to some embodiments of the present disclosure; FIG. 2 is a schematic partial cross-sectional view of the display panel shown in FIG. 1 taken along line L1-L1; FIG. 3 is a partially cut-away schematic view of the display panel shown in FIG. 1 taken along line L2-L2.

As shown in fig. 1 to 3, an embodiment of the present application provides a display panel. The display panel according to the embodiment of the present application may be an organic light emitting display panel (not illustrated in detail in the drawings), wherein the organic light emitting display panel includes an anode and a cathode, and an organic light emitting layer located between the anode and the cathode, and a voltage is applied between the anode and the cathode to excite carrier migration, which acts on the light emitting layer, thereby emitting light. In other embodiments of the present application, the display panel may also be other display panels, such as a quantum dot light-emitting panel, a nano-chip light-emitting display panel, and the like, which are not described in detail herein.

The display panel of the embodiment of the application has a display area AA, a packaging area B and a molding area C, wherein the packaging area B is arranged around the display area AA, and the molding area C is arranged on one side of the packaging area B far away from the display area AA and around the packaging area B. The display area AA is an area of the display panel for displaying an image; the packaging area B is a non-display area of the display panel, surrounds the outer side of the display area AA, and mainly isolates the light-emitting device of the display area AA from the external environment so as to prevent the invasion of moisture, harmful gases (oxygen, etc.), dust and rays, reduce external force damage, stabilize various parameters of the device and prolong the service life. The molding region C is a non-display region of the display panel, is disposed around the encapsulation region B, and is a portion remaining outside the encapsulation region B after the display panel is molded.

The display panel of the embodiment of the application includes: the substrate comprises a first substrate 1 and a second substrate 2, wherein the first substrate 1 and the second substrate 2 are oppositely arranged; a pad metal 3 located in the package region B and disposed between the first substrate 1 and the second substrate 2; a first inorganic layer 4 disposed between the second substrate 2 and the pad metal 3, the first inorganic layer 4 including a first edge 41, the first edge 41 being located in the molding region C; and a second inorganic layer 5 disposed between the second substrate 2 and the first inorganic layer 4, wherein in a direction in which the display area AA points to the molding area C, the second inorganic layer 5 includes a main body portion 51, a sealing portion 52, and an extension portion 53, which are sequentially disposed, the main body portion 51 covers the first inorganic layer 4, the sealing portion 52 connects the main body portion 51 and the extension portion 53 and wraps the first edge 41, and the extension portion 53 is at least located in the molding area C.

The first substrate 1 may be an array substrate, the second substrate 2 may be a cover substrate, and the above structures may be disposed on the first substrate 1, which is not described in detail in this embodiment.

In some embodiments, the display panel further comprises an encapsulation layer 6, the encapsulation layer 6 being disposed between the first substrate 1 and the second substrate 2. The packaging layer 6 is mainly used for blocking water and oxygen in the display area AA, so that abnormal display caused by water and oxygen entering the display area AA is avoided. Illustratively, the encapsulating layer 6 may be a frit composition including a frit and an additive for enhancing the sealing properties of the frit. At least a portion of the encapsulation layer 6 is located in the encapsulation area B, and illustratively, the encapsulation layer 6 is entirely located in the encapsulation area B.

Illustratively, the encapsulation layer 6 is located between the pad metal 3 and the second substrate 2. When display panel encapsulates, shine the encapsulation layer 6 through laser and make its melting to carry out the secondary through cushion layer metal 3 reflection back and shine, thereby accelerate the melting of encapsulation layer 6, make the more abundant of encapsulation layer 6 melting, promote encapsulation efficiency and encapsulation effect. Illustratively, the metal underlayer 3 is a metal material, and may be located in the same layer as a gate of a thin film transistor in a driving element in a display panel and made of the same material, or located in the same layer as a source and a drain of the thin film transistor and made of the same material, the metal underlayer 3 may also be a single Mo, Ti/Al/Ti three-layer metal composite material, and in other embodiments, the metal underlayer 3 may also be a material that reflects laser and has a melting point higher than a melting temperature of the encapsulation material.

Optionally, the pad metal 3 is entirely located in the package region B. The pad metal 3 may be flush with the boundary of the package region B in a direction in which the display region AA points to the package region B. The orthographic projection of the encapsulation layer 6 on the first substrate 1 is positioned within the orthographic projection of the cushion metal 3 on the first substrate 1.

The first inorganic layer 4 is an inorganic film layer in the array functional layer. The orthographic projection of the pad metal 3 on the first substrate 1 is positioned within the orthographic projection of the first inorganic layer 4 on the first substrate 1. The first inorganic layer 4 covers at least the pad metal 3 and extends to the molding region C. The first edge 41 is an edge of the first inorganic layer 4 in a direction in which the display area AA points to the molding area C.

The second inorganic layer 5 is an inorganic film layer in the array functional layer. The main body 51, the edge sealing portion 52 and the extending portion 53 of the second inorganic layer 5 are integrally formed as a continuous body along the direction from the display area AA to the molding area C. The main body 51 covers the first inorganic layer 4, the edge sealing portion 52 covers and wraps the first edge 41 of the first inorganic layer 4, and the extending portion 53 contacts the edge sealing portion 52 and extends to the molding region C. It will be appreciated that the orthographic projection of the first inorganic layer 4 on the first substrate 1 is within the orthographic projection of the second inorganic layer 5 on the first substrate 1. The extension 53 is located outside the first inorganic layer 4 in a direction in which the display area AA points to the molding area C.

The molding region C has a second edge C3 at an end remote from the encapsulation region B.

In this embodiment of the application, the first inorganic layer 4 covers the cushion metal 3 and wraps the edge of the cushion metal 3, so that the cushion metal 3 can be protected, and the first edge 41 of the first inorganic layer 4 extending to the molding region C can block water and oxygen, thereby reducing the corrosion of water and oxygen to the cushion metal 3. The second inorganic layer 5 covers the first inorganic layer 4 and wraps the first edge 41 of the first inorganic layer 4, which can block water and oxygen from attacking the first inorganic layer 4 and the underlayer metal 3. The first inorganic layer 4 and the second inorganic layer 5 can protect the cushion metal 3 in multiple layers, effectively reduce the corrosion of water and oxygen to the cushion metal 3, and improve the packaging performance of the display panel.

The display panel is typically made from a display panel master. The display panel mother set is provided with a plurality of display panels arranged in a matrix, and after the corresponding manufacturing process is finished, the display panel mother set is cut to obtain the display panel with the required small size. In order to reduce unfilled corners and broken edges generated by cutting, the cutting edge is ground; however, during the grinding process, the inorganic layer in the display panel may be subjected to lateral stress of the grinding equipment (e.g., grinding wheel), which may cause cracks in the inorganic layer.

In the embodiment of the present application, in the direction in which the display area AA points to the forming area C, the extension portion 53 is disposed on the outer side of the first inorganic layer 4, and the first edge 41 of the first inorganic layer 4 is spaced from the second edge C3 of the forming area C by a certain distance, that is, in the grinding process, the first inorganic layer 4 is not directly ground by the grinding equipment, so that the stress applied to the first inorganic layer 4 in the grinding process can be reduced, and the risk of cracks occurring on the first edge 41 of the first inorganic layer 4 is reduced. In addition, since the sealing portion 52 of the second inorganic layer 5 wraps the first edge 41 of the first inorganic layer 4, the second inorganic layer 5 can limit and protect the first edge 41, and the risk of cracking of the first edge 41 of the first inorganic layer 4 is reduced. The first inorganic layer 4 can block water and oxygen, and reduce the corrosion of the water and oxygen to the cushion metal 3, so that the packaging performance of the display panel can be ensured even if the second inorganic layer 5 has cracks.

In some embodiments, the second inorganic layer 5 comprises a passivation layer.

In some embodiments, the display panel further includes a third inorganic layer 7, the third inorganic layer 7 is disposed between the first substrate 1 and the pad metal 3, the extension portion 53 is located on a side of the third inorganic layer 7 away from the first substrate 1, and the extension portion 53 is in contact with at least a portion of the third inorganic layer 7.

The third inorganic layer 7 is an inorganic film layer in the array function layer, and includes at least one of a buffer layer, a gate insulating layer, and an interlayer insulating layer. The buffer layer can make display panel have certain toughness, improves display panel's shock resistance.

The third inorganic layer 7 is continuously provided on the first substrate 1. The orthographic projection of the pad metal 3 on the first substrate 1 is located within the orthographic projection of the third inorganic layer 7 on the first substrate 1. The extension 53 is formed at a portion of the third inorganic layer 7 located at the molding region C, that is, the extension 53 and the third inorganic layer 7 located at the molding region C contact each other.

The third inorganic layer 7 and the second inorganic layer 5 coat the cushion metal 3 and the first inorganic layer 4 from the upper and lower sides, and at least a part of the extension 53 and the third inorganic layer 7 are in contact and bonded to seal the contact interface of the extension 53 and the third inorganic layer 7, thereby blocking water and oxygen from attacking the cushion metal 3 and the first inorganic layer 4.

In some embodiments, the material of the second inorganic layer 5 and the material of the third inorganic layer 7 are the same. Illustratively, the second inorganic layer 5 and the third inorganic layer 7 each include a silicon oxy compound.

The material of the second inorganic layer 5 is the same as that of the third inorganic layer 7, and the bonding force between the two is relatively large, so that the second inorganic layer 5 and the third inorganic layer 7 are not easy to peel off when the lateral stress of the grinding equipment is applied, and the packaging performance of the display panel is improved.

The first inorganic layer 4 includes a first sub-inorganic layer 42 and a second sub-inorganic layer 43 adjacently disposed, and a material of the first sub-inorganic layer 42 and a material of the second sub-inorganic layer 43 are different. Illustratively, the first sub-inorganic layer 42 is an interlayer dielectric layer, the material of the interlayer dielectric layer includes silicon nitride, and the insulating interlayer includes silicon oxide and silicon nitride.

The bonding force between the first sub inorganic layer 42 and the second sub inorganic layer 43 is small, and if the first sub inorganic layer 42 or the second sub inorganic layer 43 is directly ground by a grinding apparatus, the first sub inorganic layer 42 and the second sub inorganic layer 43 are easily peeled. In the embodiment of the present application, the first sub inorganic layer 42 and the second sub inorganic layer 43 are spaced from the second edge C3 of the forming area C by a certain distance, so that the first sub inorganic layer 42 and the second sub inorganic layer 43 are not directly ground by a grinding device, and thus, the stress applied to the first sub inorganic layer 42 and the second sub inorganic layer 43 can be reduced, and the risk of peeling the first sub inorganic layer 42 and the second sub inorganic layer 43 can be reduced. The second inorganic layer 5 may restrict and protect the first sub-inorganic layer 42 and the second sub-inorganic layer 43, and block the first sub-inorganic layer 42 and the second sub-inorganic layer 43 from peeling off, thereby improving the encapsulation performance of the display panel.

In some embodiments, the display panel further comprises a fourth inorganic layer 8, the fourth inorganic layer 8 being disposed between the third inorganic layer 7 and the underlayer metal 3.

Referring to fig. 3, in some embodiments, the display panel further includes an active layer 9, a gate metal layer M1, an intermediate metal layer Mc, and a source-drain metal layer M2. The first sub-inorganic layer 42 is an interlayer dielectric layer, the second sub-inorganic layer 43 is an insulating interlayer, the second inorganic layer 5 is a passivation layer, the third inorganic layer 7 is a buffer layer, and the fourth inorganic layer 8 is a gate insulating layer. In the display area AA, along a direction away from the first substrate 1, the third inorganic layer 7, the active layer 9, the fourth inorganic layer 8, the gate metal layer M1, the first sub-inorganic layer 42, the intermediate metal layer Mc, the second sub-inorganic layer 43, the source-drain metal layer M2, and the second inorganic layer 5 are sequentially disposed.

In some embodiments, package region B includes a first flat region B1 and a first corner region B2 connected to the first flat region B1. The molding region C includes a second flat region C1 and a second corner region C2 connected to the second flat region C1. The second flat region C1 is located on the side of the first flat region B1 away from the display region AA and is connected to the first flat region B1. The second corner region C2 is located at a side of the first corner region B2 away from the display region AA and is connected to the first corner region B2.

Optionally, the first corner region B2 and the second corner region C2 are both radiused. At present, the rounded corner is a great trend of the display panel, and meets the aesthetic requirements of the present and future masses, and the design of the rounded corner also helps to reduce the stress of the packaging region B, and certainly, the corner region of the packaging region B can also be in other shapes such as a straight side and an adjacent straight side which together enclose a polygon, which is not further limited in the present application.

In some embodiments, at least a portion of first edge 41 is located at second corner region C2.

The second corner region C2 may be made by a grinding process. During the molding process, the grinding apparatus makes several reciprocating movements along the corners of the display panel to grind the second corner region C2. That is, the second corner region C2 is more stressed during polishing than the second flat region C1. In the embodiment of the present application, at least a portion of the first edge 41 is located in the second corner region C2, and the first edge 41 is spaced apart from an edge of the second corner region C2 away from the display region by a certain distance, so as to prevent the polishing apparatus from directly polishing the first inorganic layer 4 during the process of polishing the second corner region C2.

FIG. 4 is another partially cross-sectional schematic view of the display panel shown in FIG. 1 taken along line L1-L1.

As shown in fig. 1 and 4, in some embodiments, the molding region C has a second edge C3 at an end away from the encapsulation region B. In the direction in which the display area AA points to the forming area C, the extending portion 53 and the second edge C3 have a first predetermined distance K1.

The second edge C3 of the molding region C is formed after the display panel is cut or ground. Illustratively, the second edge C3 of the shaping region C is formed at least in part by grinding with a grinding apparatus.

In the embodiment of the present application, the extension portion 53 and the second edge C3 are separated by a first preset distance K1, and the first preset distance K1 is a safe distance for grinding, that is, the distance from the grinding apparatus to the second edge C3 during the grinding process of the second edge C3, and the specific value is determined according to different apparatuses, and is not limited herein. This prevents extension 53 from being directly ground by the grinding equipment, reduces the force applied to extension 53, reduces the risk of extension 53 cracking, and provides packaging performance

FIG. 5 is yet another partially cross-sectional schematic view of the display panel shown in FIG. 1 taken along line L1-L1.

As shown in fig. 1 and 5, in some embodiments, the extension portion 53 has a reduced thickness portion 531 at least at an end portion away from the main body portion 51, and the thickness of the reduced thickness portion 531 is smaller than that of the main body portion 51.

The grinding device may grind the extension 53 during the molding process, subject to the precision of the device. This application can reduce the degree of difficulty of grinding through setting up the portion of reducing 531, reduces the stress that acts on second inorganic layer 5.

Illustratively, the edge of the thinned portion 531 remote from the main body portion 51 is flush with the second edge C3.

The present application may locally thin the second inorganic layer 5 by an etching process to form the thinned portion 531.

In some embodiments, the extension portion 53 is a thinned portion 531 as a whole, that is, the extension portion 53 is thinner than the main body portion 51 as a whole.

FIG. 6 is a further partial cross-sectional schematic view of the display panel shown in FIG. 1 taken along line L1-L1;

FIG. 7 is an enlarged schematic view of the display panel shown in FIG. 1 at the circular frame S; fig. 8 is another enlarged schematic view of the display panel shown in fig. 1 at the circular frame S. It should be noted that fig. 7 and 8 only show the extending portion 53 of the second inorganic layer 5, and the main body portion 51 and the bead portion 52 of the second inorganic layer 5 are omitted.

Referring to fig. 1, 6-8, in some embodiments, extension 53 includes a plurality of spaced sub-extensions 532.

It will be appreciated that the plurality of sub-extensions 532 are not continuously disposed. In the process of grinding, the grinding device may extrude the first substrate 1 and the second substrate 2 to a certain extent, resulting in a slight deformation of the edges of the first substrate 1 and the second substrate 2. If the extension 53 is continuously provided, stress is accumulated on the extension 53, causing a risk of cracking of the extension 53. In the embodiment of the present application, the extending portion 53 is provided as a plurality of spaced sub-extending portions 532, so that the stress transmission and accumulation on the plurality of sub-extending portions 532 are reduced, the effect of releasing the stress is achieved, and the risk of crack extending to the edge sealing portion 52 and the main body portion 51 is reduced.

The embodiment of the present application may open the groove 533 on the extension 53 by an etching process to form a plurality of spaced sub-extensions 532.

As shown in fig. 6 and 7, in some embodiments, the sub-extensions 532 are sequentially arranged along the display area AA in a direction toward the molding area C, so as to better block the transmission of stress to the encapsulation area B, reduce the stress on the edge sealing portion 52 and the main body portion 51 of the second inorganic layer 5 and the first inorganic layer 4, and reduce the risk of cracking. Each sub-extension 532 is illustratively strip-shaped and extends in the circumferential direction of the molding zone C.

In other embodiments, as shown in fig. 8, a plurality of sub-extensions 532 are arranged in sequence along the circumferential direction of the molding section C, so that the stress accumulation in the circumferential direction of the molding section C can be reduced, and the risk of cracking can be reduced.

FIG. 9 is a further enlarged schematic view of the display panel shown in FIG. 1 at the circle frame S; FIG. 10 is a further enlarged schematic view of the display panel shown in FIG. 1 at the circle frame S; fig. 11 is another enlarged schematic view of the display panel shown in fig. 1 at the circular frame S. Fig. 9, 10, and 11 are used to illustrate the pad metal 3 and the first inorganic layer 4, and other structures of the display panel are omitted.

Referring to fig. 1, 9 to 11, the encapsulation region B includes a first flat region B1 and a first corner region B2 connected to the first flat region B1. The pad metal 3 includes a first pad metal 31 and a second pad metal 32 disposed at an interval, the first pad metal 31 is located in the first corner region B2, and the second pad metal 32 is located in the first flat region B1. The first inorganic layer 4 fills the gap between the first pad metal 31 and the second pad metal 32.

This application embodiment sets up first bed course metal 31 and second bed course metal 32 separation, like this, even first bed course metal 31 receives the erosion of water oxygen because of the crackle that the grinding caused, fills first inorganic layer 4 between first bed course metal 31 and second bed course metal 32 and also can block water oxygen, avoids water oxygen to spread second bed course metal 32 to guarantee display panel's packaging performance.

In some embodiments, the first pad metal 31 comprises a plurality of separately disposed first subpad metal 311. Since the plurality of first subpad layer metals 311 are not continuously arranged, when one of the first subpad layer metals 311 is corroded, only the first subpad layer metal 311 is affected, and the corrosion does not spread to other adjacent first subpad layer metals 311, so that the corrosion rate is further reduced.

In some embodiments, as shown in fig. 10, a plurality of first subpad layer metals 311 are arranged along a radial direction of the first corner region B2. That is, the plurality of first subpad layers are sequentially arranged along the display area AA in a direction toward the molding area C. The embodiment can better prevent the corrosion from spreading to the interior of the display area AA, and further retard the corrosion rate.

In other embodiments, as shown in fig. 11, a plurality of first subpad layer metals 311 are arranged along the circumference of the first corner region B2. When one of the first subpad layer metals 311 corrodes, only the first subpad layer metal 311 concerned is affected, and the corrosion does not spread to other adjacent first subpad layer metals 311, further reducing the corrosion rate.

FIG. 12 is a schematic structural view of a cut panel provided in some embodiments of the present application; FIG. 13 is a schematic partial cross-sectional view of the cutting panel shown in FIG. 12 taken along line L3-L3.

As shown in fig. 12 and 13, the embodiment of the present application also provides a cutting panel. The cutting panel comprises the display panel of any one of the previous embodiments, and is used for manufacturing the display panel.

The cutting panel also comprises a grinding stripping area D, and the grinding stripping area D is positioned on one side of the forming area C far away from the packaging area B.

The cutting panel is a small-sized panel obtained by cutting the display panel master, and the grinding peeling region D is a region existing when the cutting panel has not been ground. And removing the grinding stripping area D of the cutting panel through a grinding process to prepare the display panel.

During the grinding process, the first inorganic layer 4 is not directly ground by the grinding device, so that the stress applied to the first inorganic layer 4 during the grinding process can be reduced, and the risk of cracking of the first edge 41 of the first inorganic layer 4 can be reduced. In addition, since the sealing portion 52 of the second inorganic layer 5 wraps the first edge 41 of the first inorganic layer 4, the second inorganic layer 5 can limit and protect the first edge 41, and the risk of cracking of the first edge 41 of the first inorganic layer 4 is reduced. The first inorganic layer 4 can block water and oxygen, and reduce the corrosion of the water and oxygen to the cushion metal 3, so that the packaging performance of the display panel can be ensured even if the second inorganic layer 5 has cracks.

In some embodiments, molding zone C includes a second flat zone C1 and a second corner zone C2 connected to second flat zone C1. The grinding peeling area D is located on the side of the second corner area C2 away from the packaging area B. The grinding stripping area D is removed through grinding, so that the forming area C forms a second corner area C2.

At present fillet is a big trend of display panel, and district D is peeled off in this application through the grinding removal to form the fillet in display panel's corner.

In some embodiments, at least a portion of the extension 53 is located in the abrasive stripping zone D. A portion of the extension 53 is removed during grinding.

FIG. 14 is another partial cross-sectional schematic view of the cutting panel shown in FIG. 12 taken along line L3-L3.

Referring to fig. 12 and 14, in some embodiments, the abrasive peel zone D has a third edge D1 on a side away from the molding zone C. The third edge D1 is located on a side of the extension 53 away from the display area AA.

In the direction in which the display area AA points to the polishing peeling area D, the extending portion 53 and the third edge D1 have a second predetermined distance K2 therebetween. The second predetermined distance K2 is a safe distance for grinding, i.e. a distance that the grinding device will not grind the extension portion 53 during the grinding process of the third edge D1, and the specific value depends on different devices and is not limited herein. Therefore, when the grinding peeling region D is ground, the extension portion 53 receives a small cutting stress, and is less likely to crack.

The third edge D1 is the cutting position of the display panel master. The third edge D1 is disposed on the side of the extension portion 53 away from the display area AA, so that the extension portion 53 is spaced from the third edge D1, and thus, when the display panel master is cut, the extension portion 53 does not need to be cut, thereby reducing the cutting stress and reducing the risk of cracks in the film layer.

Fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present application.

As shown in fig. 15, the present application further provides a display device 100 including the display panel of any one of the foregoing embodiments. The display device 100 may be: the intelligent wearable device (such as an intelligent wristwatch and a VR device), a mobile phone, a tablet personal computer, a television, a display, a notebook computer, a digital photo frame, a navigator and other products or components with display functions. The display device can be implemented by referring to the above embodiments of the display panel, and repeated descriptions are omitted.

In accordance with the embodiments of the present application as described above, these embodiments are not exhaustive and do not limit the application to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and its practical application, to thereby enable others skilled in the art to best utilize the application and its various modifications as are suited to the particular use contemplated. The application is limited only by the claims and their full scope and equivalents.