Display panel, preparation method thereof and display device

Abstract

The invention provides a display panel, a preparation method thereof and a display device. The display panel is provided with a display area and a frame area surrounding the display area, the side, away from the display area, of the frame area is provided with an outer edge, and the display panel comprises a screen body; the cover plate is located on one side of the screen body, the cover plate is provided with at least one recess, the recess is located in the frame area, and at least part of the recess extends to the outer edge; and the filling part is arranged in the concave part, and the filling part arranged in the concave part extending to the outer edge forms part of the outer edge. According to the embodiment of the invention, the recess is formed in the edge of the cover plate and the filling part is arranged in the recess, so that the problems of edge breakage, cracks and the like are avoided when the cover plate and the screen body are integrally cut.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a method for preparing the same, and a display device. Background Art

[0002] At present, with the development of display technology, foldable display devices are widely used. Since foldable display devices need to bend to bear force, higher lamination accuracy is required for the flexible glass cover and the screen. When preparing display panels, due to the influence of the material of the flexible glass cover itself, problems such as edge collapse and cracks are prone to occur during laser cutting, resulting in the flexible glass cover being etched into a fixed size and then bonded to the screen through an adhesive layer. This method has a large bonding tolerance and cannot meet the high bonding accuracy requirements.

[0003] Therefore, there is an urgent need for a solution that can cut the cover plate and the screen body into one piece without causing edge chipping and cracks. Summary of the invention

[0004] The embodiments of the present application provide a display panel and a method for manufacturing the same, and a display device, so as to prevent problems such as edge chipping and cracks from occurring when a cover plate and a screen body are cut as one piece.

[0005] In a first aspect, a display panel is provided, comprising a display area and a frame area surrounding the display area, wherein the frame area has an outer edge on a side away from the display area, the display panel comprising: a screen body; a cover plate, located on one side of the screen body, the cover plate being provided with at least one recess, the recess being located in the frame area, and at least part of the recess extending to the outer edge; and a filling portion, arranged in the recess, and the filling portion arranged in the recess extending to the outer edge forms part of the outer edge.

[0006] In combination with the first aspect, in certain implementations of the first aspect, along the thickness direction of the cover plate, the cover plate has a first surface and a second surface relative to each other, and the recesses are respectively arranged on the first surface and the second surface; at least part of the recess located on the first surface extends to the outer edge, and the filling portion arranged in the recess extending to the outer edge forms part of the outer edge, and / or, at least part of the recess located on the second surface extends to the outer edge, and the filling portion arranged in the recess extending to the outer edge forms part of the outer edge.

[0007] In combination with the first aspect, in certain implementations of the first aspect, the recesses on the first surface and the second surface correspond one to one, and extend to the two recesses on the outer edges respectively, and the minimum distance from the recess on the first surface to the display area is greater than or equal to the minimum distance from the recess on the second surface to the display area.

[0008] In combination with the first aspect, in some implementations of the first aspect, the recess extending at least to the outer edge surrounds the display area in a ring shape.

[0009] In combination with the first aspect, in certain implementations of the first aspect, along the thickness direction of the cover plate, in a cross section of the cover plate, a shape of the recess includes a trapezoid and / or a rhombus.

[0010] In combination with the first aspect, in some implementations of the first aspect, a plurality of recesses are provided on the same surface.

[0011] In combination with the first aspect, in some implementations of the first aspect, a plurality of recesses located on the same surface are arranged around the display area.

[0012] In combination with the first aspect, in certain implementations of the first aspect, a plurality of recesses located on the same surface surround the display area and are arranged to form a plurality of nested rings.

[0013] In combination with the first aspect, in some implementations of the first aspect, it also includes: a protective layer, which is at least located in the border area of ​​the cover plate, and the protective layer is arranged on the side of the cover plate where the recess is provided, and the protective layer is connected to the filling part.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the orthographic projection of the protective layer on the screen body at least covers the recess extending to the outer edge.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the material of the filling portion and the material of the protective layer are the same, and the connected filling portion and protective layer are integrally formed.

[0016] In combination with the first aspect, in certain implementations of the first aspect, materials of the filling portion and the protective layer both include black glue.

[0017] In combination with the first aspect, in certain implementations of the first aspect, the protective layer includes an opaque layer.

[0018] In a second aspect, a method for preparing a display panel is provided, comprising: providing a display panel to be cut, the display panel to be cut comprising a display area, a frame area and an area to be cut, the frame area surrounds the display area, the area to be cut surrounds at least a portion of the frame area, and a cutting line is provided between the area to be cut and the frame area; cutting along the cutting line of the display panel to be cut, removing the area to be cut of the display panel to be cut, and obtaining the display panel.

[0019] In combination with the second aspect, in certain implementations of the second aspect, providing a display panel to be cut includes: providing a cover plate to be cut and a screen body to be cut, the cover plate to be cut and the screen body to be cut respectively having a display area, a frame area and an area to be cut, wherein at least one surface of the cover plate to be cut in the thickness direction has at least one depression, and at least part of the depression intersects with the cutting line, so that part of the depression is located in the frame area, and another part of the depression is located in the area to be cut; taking filling material to fill at least the depression intersecting with the cutting line to form a filling part, so that part of the filling part is located on the cutting line; covering the cover plate to be cut on the screen body to be cut to obtain a display panel.

[0020] In combination with the second aspect, in certain implementations of the second aspect, the cover plate to be cut is covered on the screen body to be cut, and also includes: preparing a protective layer on the side of the cover plate to be cut having the depression, so that the protective layer is connected to the filling part, and the protective layer has an orthographic projection on the screen body to be cut that at least covers the depression intersecting with the cutting line.

[0021] In combination with the second aspect, in certain implementations of the second aspect, the protective layer covers the border area and the area to be cut of the cover plate to be cut, and after preparing the protective layer on the recessed side of the cover plate to be cut, the method further includes: aligning the inner edge of the protective layer with the edge of the display area of ​​the screen body to be cut so as to cover the cover plate to be cut on the screen body to be cut.

[0022] In a third aspect, a display device is provided, comprising the display panel described above.

[0023] In the embodiment of the present application, a filling portion is arranged in a recess extending at least to the outer edge, and the filling portion forms a part of the outer edge. In this way, in the process of cutting along the outer edge of the display panel to form a display panel, the filling portion arranged at the outer edge can be utilized so that part of the filling portion can be cut during cutting, thereby minimizing damage to the cover plate in the thickness direction, thereby reducing problems such as edge chipping and crack extension when the display panel is cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1a A top view of a display panel.

[0026] Figure 1b for Figure 1a The cross-sectional view of the display panel shown is taken along the AA direction.

[0027] Figure 2 A top view of a display panel provided in accordance with an embodiment of the present application.

[0028] Figure 3 A top view of a display panel provided according to another embodiment of the present application.

[0029] Figure 4 An embodiment of the present application provides Figure 3 The cross-sectional view of the display panel shown is taken along the BB direction.

[0030] Figure 5 An embodiment of the present application provides Figure 3 The cover plate of the display panel is shown in a cross-sectional view along the CC direction.

[0031] Figure 6 Another embodiment of the present application provides Figure 3 The cover plate of the display panel is shown in a cross-sectional view along the CC direction.

[0032] Figure 7 Another embodiment of the present application provides Figure 3 The cover plate of the display panel is shown in a cross-sectional view along the CC direction.

[0033] Figure 8 Another embodiment of the present application provides Figure 3 The cover plate of the display panel is shown in a cross-sectional view along the CC direction.

[0034] Fig. 9 A top view of a display panel to be cut provided in one embodiment of the present application.

[0035] Fig.10 A cross-sectional view of a display panel to be cut provided in one embodiment of the present application.

[0036] Fig.11 A flow chart of a method for preparing a display panel provided in one embodiment of the present application.

[0037] Fig.12 A flow chart of a method for preparing a display panel provided in another embodiment of the present application. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. The features and exemplary embodiments of various aspects of the present application will be described in detail below.

[0039] Figure 1a A top view of a display panel. Figure 1b for Figure 1a The cross-sectional view of the display panel in the AA direction is shown in FIG. 1 . The direction indicated by the arrow H is the thickness direction of the display panel. Figure 1a and Figure 1b As shown, the display panel 10 includes a screen body 2 and a cover plate 1 attached to the screen body 2 in a thickness direction H. The display panel 10 includes a display area AA and a frame area NN surrounding at least a portion of the display area AA, that is, the frame area NN can be set only on one side of the display area AA, or can surround the display area AA, and can be adaptively adjusted according to the preparation requirements of the display panel 10. The following description takes the frame area NN surrounding the display area AA as an example.

[0040] In a display device with a display function such as a mobile phone and a computer, the display panel 10 used may be an organic light-emitting diode (OLED) display panel or a liquid crystal display (LCD) display panel, depending on the application field. Furthermore, the display panel 10 may be a foldable display panel or a non-foldable display panel, depending on the needs of the user. The present invention does not specifically limit this. The following is exemplarily described by taking a foldable OLED display panel as an example.

[0041] In the process of manufacturing the display panel 10, in some designs, the cover plate 1 is etched into a fixed size, and then the screen body 2 is laser cut into a fixed size, and then the cover plate 1 and the screen body 2 are bonded together. Figure 1a and Figure 1bThe screen body 2 after laser cutting into a fixed size has a display area AA and a frame area NN. The cover plate 1 after etching into a fixed size is pre-coated with opaque ink, so the area not coated with ink is used as the display area AA'. Before the cover plate 1 is attached to the screen body 2, an adhesive layer will be first applied to the screen body 2, and then the cover plate 1 will be attached to the screen body 2 to complete the attachment of the two. In the attachment and alignment of the cover plate 1 and the screen body 2, due to the influence of the ink coated on the cover plate 1 and the adhesive layer pre-set on the screen body 2, a large attachment tolerance will be generated when the cover plate 1 and the screen body 2 are attached. The attachment tolerance will be reflected in the misalignment distance b between the display area AA' of the cover plate 1 and the display area AA of the screen body 2, thereby affecting the display effect. Especially in the foldable display panel 10, during the bending process of the display panel 10, the fitting tolerance may cause the misalignment distance b between the folded cover plate 1 and the screen body 2 to become larger, and may also affect the bending force at the bending position of the display panel 10, thereby affecting the display effect and service life of the display panel 10.

[0042] It should be emphasized that the cover plate 1 at least includes a glass plate, and on the basis of the glass plate, it can also include a laminated protective layer, an ink layer, etc., and the protective layer is attached to the upper surface of the glass plate. For the sake of ease of understanding and description, the cover plate 1 in the figure only shows a structure including a glass plate, and the glass plate can be a structure that can be used for a folding display panel 10 after being strengthened, and the thickness of the glass plate is not specifically limited. In addition, when the glass plate is attached to the screen body 2, when the cover plate 1 also includes other layers such as a protective layer, it can be aligned with the edge of the screen body 2 based on the size of the upper protective layer. At this time, the size of the glass plate can be smaller than the size of the screen body 2, or the size of the glass plate can be the same as the size of the screen body 2, and can be adaptively adjusted according to actual conditions. For the sake of ease of understanding and description, the size of the cover plate 1 is set to be the same as the size of the screen body 2 in the embodiment of the present application, but it is not limited to this.

[0043] In order to reduce or even eliminate the tolerance caused by the lamination of the cover plate 1 and the screen body 2, the cover plate 1 and the screen body 2 can be aligned and laminated before being prepared into the size of the display panel 10, and then laser cut as a whole, that is, the cover plate 1 and the screen body 2 are cut as a whole. However, since the cover plate 1 is made of glass, when the laminated cover plate to be cut and the screen body to be cut are laser cut by laser equipment, the glass cover plate 1 is prone to edge collapse, cracks and other problems at the cutting position.

[0044] In view of this, the present application provides a display panel and a method for manufacturing the same, and a display device, which can realize integral cutting of the cover plate 1 and the screen body 2.

[0045] Figure 2 A top view of a display panel provided in accordance with an embodiment of the present application. Figure 3 A top view of a display panel provided according to another embodiment of the present application. Figure 4An embodiment of the present application provides Figure 3 The cross-sectional view of the display panel shown is taken along the BB direction. Figure 5 An embodiment of the present application provides Figure 3 The cover plate of the display panel is shown in a cross-sectional view along the CC direction. Figure 6 Another embodiment of the present application provides Figure 3 The cover plate of the display panel is shown in a cross-sectional view along the CC direction. Figure 7 Another embodiment of the present application provides Figure 3 The cover plate of the display panel is shown in a cross-sectional view along the CC direction. Figure 8 Another embodiment of the present application provides Figure 3 The cover plate of the display panel is shown in a cross-sectional view along the CC direction.

[0046] like Figures 2 to 4 The display panel 10 has a display area AA and a frame area NN surrounding the display area AA, the frame area NN has an outer edge 101 on a side away from the display area AA, the display panel 10 includes a screen body 2, a cover plate 1 and a filling portion 3, the cover plate 1 is located on one side of the screen body 2, the cover plate 1 is provided with at least one recess 11, the recess 11 is located in the frame area NN, and at least part of the recess 11 extends to the outer edge 101, the filling portion 3 is arranged in the recess 11, and the filling portion 3 arranged in the recess 11 extending to the outer edge 101 forms part of the outer edge 101.

[0047] It is understandable that the screen body 2 may include a substrate, a device layer, a light-emitting layer, a packaging layer, a light-functional layer, etc. stacked along the thickness direction H, without specific limitation. In the embodiment of the present application, for the sake of convenience, the layers of the screen body 2 are not specifically limited and are only represented as a whole.

[0048] The display panel 10 provided in the embodiment of the present application is provided with a filling portion 3 in a recess 11 extending at least to an outer edge 101, and the filling portion 3 forms part of the outer edge 101, so that in the process of cutting along the outer edge 101 of the display panel 10 to form the display panel 10, the filling portion 3 provided at the outer edge 101 is utilized so that part of the filling portion 3 can be cut during cutting, thereby minimizing damage to the glass in the thickness direction H, thereby avoiding the problem of crack extension when the glass is cut.

[0049] It is understandable that the filling portion 3 includes an organic adhesive material, which may specifically include acrylic resin, polyimide, black glue, etc., without any specific limitation.

[0050] Optionally, the depression 11 extending at least to the outer edge 101 is annular around the display area AA. The annular depression 11 can be set as a continuous annular groove structure, or can be set as a plurality of discontinuous annular groove structures, without specific limitation. In the embodiment of the present application, the depression 11 is set as a continuous annular groove structure.

[0051] Optionally, in the cross section of the cover plate 1, the shape of the recess 11 can be a trapezoid, or a diamond, square, semicircle, etc. In addition, along the thickness direction H, the depth of the recess 11 on the cover plate 1 can be less than half the thickness of the cover plate 1, and can be adaptively adjusted according to needs without specific limitation.

[0052] In some embodiments, Figures 5 to 7 , the recess 11 is arranged on at least one side of the cover plate 1 in the thickness direction H. Specifically, along the thickness direction H of the cover plate 1, the cover plate 1 has a first surface 1a and a second surface 1b relative to each other, and the recess 11 can be arranged only on the first surface 1a, or only on the second surface 1b, or on both surfaces. It can be adaptively adjusted according to needs without specific limitation. In the embodiment of the present application, the recess 11 is respectively arranged on the first surface 1a and the second surface 1b as an example for explanation. Among them, at least part of the recess 11 located on the first surface 1a extends to the outer edge 101, and the filling portion 3 arranged in the recess 11 extending to the outer edge 101 forms part of the outer edge 101, and at least part of the recess 11 located on the second surface 1b extends to the outer edge 101, and the filling portion 3 arranged in the recess 11 extending to the outer edge 101 forms part of the outer edge 101. By providing the recesses 11 on both opposite sides of the cover plate 1 and providing the filling portion 3 in the recesses 11 , the cut size of the cover plate 1 in the thickness direction H is further reduced to avoid the generation of cracks.

[0053] It is understandable that the sizes of the recesses 11 disposed on the first surface 1a and the second surface 1b may be the same or different, and are not specifically limited. In the embodiment of the present application, the recesses 11 on the first surface 1a and the second surface 1b are set to have the same size.

[0054] Optionally, the depressions 11 on the first surface 1a and the second surface 1b correspond to each other one by one, and the two depressions 11 correspondingly extend to the outer edge 101, and the minimum distance L1 from the depression 11 on the first surface 1a to the display area AA is greater than or equal to the minimum distance L2 from the depression 11 on the second surface 1b to the display area AA. By setting two depressions 11 with different distances from the display area AA on the first surface 1a and the second surface 1b, when the depression 11 on the first surface 1a is cut, even if cracks are generated during the cutting process, the extension of the cracks will be blocked by the depression 11 on the second surface 1b, so as to avoid the display panel 10 from being scrapped. That is, the depressions 11 on the first surface 1a and the second surface 1b that are relatively set can play a role in blocking the extension of cracks.

[0055] It is understandable that the first surface 1a and the second surface 1b may each be provided with one or more recesses 11, which can be adaptively adjusted according to needs. Taking the first surface 1a and the second surface 1b as an example, the recesses 11 are both provided with multiple recesses, and the multiple recesses 11 on the same surface are provided around the display area AA, and the multiple recesses 11 on the same surface are arranged around the display area AA to form multiple rings.

[0056] Alternatively, if Figure 5 and Figure 7 The multiple recesses 11 located on the first surface 1a and the multiple recesses 11 located on the second surface 1b can be aligned one by one in the thickness direction H, that is, the distances to the display area AA are the same. Alternatively, the multiple recesses 11 located on the first surface 1a and the multiple recesses 11 located on the second surface 1b can be staggered one by one in the thickness direction H, without specific limitation.

[0057] In some embodiments, Figure 8 The display panel 10 further includes a protective layer 4, which is at least located in the frame area NN of the cover plate 1, and is disposed on the side of the cover plate 1 where the recess 11 is disposed, and the protective layer 4 is connected to the filling portion 3. The protective layer 4 can further block cracks during cutting.

[0058] It can be understood that the material of the protective layer 4 can be the same as that of the filling part 3, and the protective layer 4 can be prepared into an integrally formed structure with the connecting part.

[0059] In an optional embodiment, the orthographic projection of the protective layer 4 on the screen body 2 at least covers the depression 11 extending to the outer edge 101. Further, the protective layer 4 can cover the second surface 1b of the frame area NN, and the materials of the filling portion 3 and the protective layer 4 both include opaque black glue. The protective layer 4 replaces the original opaque adhesive layer between the cover plate 1 and the screen body 2. By aligning the inner edge of the protective layer 4 with the edge of the display area AA of the screen body 2, the cover plate 1 can be directly attached to the screen body 2, thereby improving the alignment accuracy of the cover plate 1 and the screen body 2, and reducing or even eliminating the alignment tolerance between the two.

[0060] Optionally, the protective layer 4 may also cover the first surface 1a of the frame area NN, and the materials of the filling portion 3 and the protective layer 4 both include opaque black glue, so that the protective film can be directly attached to the upper surface of the cover plate 1 without the need for additional alignment and bonding through an adhesive layer.

[0061] In addition, the protective layer 4 and the filling part 3 are arranged as an integrally formed structure, which improves the bonding strength and stability between the cover plate 1 and the screen body 2 and can avoid the offset between the cover plate 1 and the screen body 2 during the bending process.

[0062] It should be emphasized that the thickness of the protective layer 4 can refer to the thickness of the adhesive layer between the cover plate 1 and the screen body 2, and may even be less than the thickness of the adhesive layer, without being specifically limited.

[0063] Fig. 9 A top view of a display panel to be cut provided in one embodiment of the present application. Fig.10 A cross-sectional view of a display panel to be cut provided in one embodiment of the present application. Fig.11 A flow chart of a method for preparing a display panel provided in one embodiment of the present application. Fig.12 A flow chart of a method for preparing a display panel provided in another embodiment of the present application.

[0064] The present application also provides a method for preparing a display panel, which can efficiently prepare a display panel with high matching accuracy and no broken edges or cracks when cut. Fig.11 , the specific steps are as follows:

[0065] S1. Provide a display panel 100 to be cut, wherein the display panel 100 to be cut comprises a display area AA, a frame area NN and a to-be-cut area NS, wherein the frame area NN surrounds the display area AA, the to-be-cut area NS surrounds at least a portion of the frame area NN, and a cutting line 102 is provided between the to-be-cut area NS and the frame area NN.

[0066] S2 , cutting is performed along the cutting line 102 of the display panel 100 to be cut, and the to-be-cut area NS of the display panel 100 to be cut is removed to obtain the display panel 10 .

[0067] Specifically, Fig.12, step S1 specifically includes the following steps:

[0068] S11. Provide a cover plate 10a to be cut and a screen body 20a to be cut, wherein the cover plate 10a to be cut and the screen body 20a to be cut respectively have a display area AA, a frame area NN and a to-be-cut area NS, wherein the cover plate 10a to be cut has at least one recess 11 on at least one surface in the thickness direction H, and at least part of the recess 11 intersects with the cutting line 102, so that part of the recess 11 is located in the frame area NN, and another part of the recess 11 is located in the to-be-cut area NS.

[0069] S12 , taking a filling material and filling it at least in the recess 11 intersecting the cutting line 102 to form a filling portion 3 , so that part of the filling portion 3 is located at the cutting line 102 .

[0070] S13, covering the cover plate 10a to be cut with the screen body 20a to be cut, to obtain the display panel 100 to be cut.

[0071] By providing the filling portion 3 and the recess 11 , when the display panel 100 to be cut is cut along the cutting line 102 , it is possible to prevent the cover plate 10 a to be cut from chipping, extending cracks, etc.

[0072] Alternatively, if Fig. 9 and Fig.10 The specific structure of the display panel 100 to be cut can be understood as adding a to-be-cut area NS on the basis of the display panels 10 in the above-mentioned embodiments. In this embodiment, the to-be-cut area NS surrounds one side or all four sides of the frame area NN. The contact portion between the to-be-cut area NS and the frame area NN has a cutting line 102. The to-be-cut area NS is cut along the cutting line 102 to obtain the display panels 10 in the above-mentioned embodiments. The outer edge 101 in the display panel 10 is equivalent to the cutting line 102 when the display panel 100 to be cut is not cut. That is, the display panel 100 to be cut includes a screen body 20a to be cut, a cover plate 10a to be cut and a filling part 3. The cover plate 10a to be cut is located on one side of the screen body 20a to be cut. The cover plate 10a to be cut is provided with at least one recess 11. The recess 11 is located in at least one of the frame area NN and the area to be cut NS, and at least part of the recess 11 intersects with the cutting line 102. The filling part 3 is arranged in the recess 11, and the filling part 3 arranged in the recess 11 intersecting with the cutting line 102 intersects with the cutting line 102. For the specific arrangement of the recess 11 and the filling part 3 set in the cover plate 10a to be cut, please refer to the various embodiments of the display panel 10. Similarly, the cover plate 1 and the screen body 2 in the display panel 10 can be obtained by cutting the cover plate 10a to be cut and the area to be cut NS of the screen body 20a to be cut along the cutting line 102, which will not be repeated.

[0073] It can be understood that, in the display panel 100 to be cut, at least part of the recess 11 and the filling part 3 arranged therein intersect with the cutting line 102. After the cover plate 10a to be cut is attached to the screen body 20a to be cut, in order to obtain the display panel 10, it is necessary to cut along the cutting line 102 to remove the area NS to be cut. During the cutting process, the filling part 3 and the recess 11 located on the cutting line 102 can avoid the problems of edge collapse and crack extension, so as to improve the qualified rate of the display panel 10 obtained by cutting and avoid scrapping.

[0074] In some embodiments, in the cover plate 10a to be cut of the display panel 100 to be cut, along the thickness direction H of the cover plate 10a to be cut, the cover plate 10a to be cut has a first surface 1a and a second surface 1b relative to each other, and the recesses 11 are respectively arranged on the first surface 1a and the second surface 1b, at least part of the recess 11 located on the first surface 1a intersects with the cutting line 102, and the filling portion 3 in the intersecting recess 11 intersects with the cutting line 102, and / or, at least part of the recess 11 located on the second surface 1b intersects with the cutting line 102, and the filling portion 3 in the intersecting recess 11 intersects with the cutting line 102.

[0075] Optionally, at least the depression 11 intersecting the cutting line 102 is annular around the display area AA, and along the thickness direction H of the cover plate 10a to be cut, in the cross section of the cover plate 10a to be cut, the shape of the depression 11 includes a trapezoid and / or a rhombus.

[0076] Optionally, a protective layer 4 is further included, which is at least located in the border area NN of the cover plate 10a to be cut, and the protective layer 4 is arranged on the side of the cover plate 10a to be cut where the recess 11 is provided, and the protective layer 4 is connected to the filling part 3; the orthographic projection of the protective layer 4 on the screen body 20a to be cut at least covers the recess 11 intersecting with the cutting line 102.

[0077] It should be emphasized that the specific matching structure of the recess 11 and the filling portion 3 provided in the display panel 100 to be cut can refer to the relevant description of the display panel 10 in the above embodiments, and will not be repeated here.

[0078] In some embodiments, step S13 further includes: preparing a protective layer 4 on the side of the cover plate 10a to be cut having the recess 11, connecting the protective layer 4 to the filling portion 3, and making the protective layer 4 at least cover the recess 11 intersecting with the cutting line 102 in the orthographic projection of the screen body 20a to be cut. The protective layer 4 is provided to replace the original adhesive layer used to bond the cover plate 10a to be cut and the screen body 20a to be cut, which is beneficial to the fitting accuracy of the cover plate 10a to be cut and the screen body 20a to be cut, and can improve the fitting strength of the cover plate 10a to be cut and the screen body 20a to be cut.

[0079] Optionally, the protective layer 4 covers the frame area NN and the area to be cut NS of the cover plate 10a to be cut. After the protective layer 4 is prepared on the side of the cover plate 10a to be cut with the recess 11, the method for preparing the display panel further includes: aligning the inner edge of the protective layer 4 with the edge of the display area AA of the screen body 20a to be cut, so as to cover the cover plate 10a to be cut on the screen body 20a to be cut. By aligning the inner edge of the protective layer 4 prepared in advance on the cover plate 10a to be cut with the edge of the display area AA of the screen body 20a to be cut, the alignment accuracy of the cover plate 10a to be cut and the screen body 20a to be cut is improved, thereby improving the fitting accuracy of the cover plate 1 and the screen body 2 in the display panel 10.

[0080] The present application also provides a display device, which includes the display panel 10 described in the above embodiment. The display device can be an OLED or an LCD, which is not specifically limited here.

[0081] It should be noted that in the drawings of the present application document, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0082] In addition, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0083] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: The display panel has a display area and a frame area surrounding the display area, wherein a side of the frame area away from the display area has an outer edge, and the display panel comprises: Screen body; a cover plate, located at one side of the screen body, the cover plate being provided with at least one recess, the recess being located in the frame area, and at least a portion of the recess extending to the outer edge; and A filling portion is arranged in the recess and extends to the outer edge. The filling portion arranged in the recess forms a part of the outer edge.

2. The display panel according to claim 1, characterized in that: Along the thickness direction of the cover plate, the cover plate has a first surface and a second surface opposite to each other, and the recesses are respectively arranged on the first surface and the second surface; At least part of the recess located on the first surface extends to the outer edge, and the filling portion arranged in the recess extending to the outer edge forms part of the outer edge, and / or, At least part of the recess located on the second surface extends to the outer edge, and the filling portion arranged in the recess extending to the outer edge forms part of the outer edge.

3. The display panel according to claim 2, characterized in that: The recesses on the first surface and the second surface correspond one to one and extend to the two recesses on the outer edge respectively, and the minimum distance from the recess on the first surface to the display area is greater than or equal to the minimum distance from the recess on the second surface to the display area.

4. The display panel according to claim 1, characterized in that: The recess extending at least to the outer edge is annular around the display area; Preferably, along the thickness direction of the cover plate, in the cross section of the cover plate, the shape of the recess includes a trapezoid and / or a rhombus.

5. The display panel according to claim 1, characterized in that: The recesses located on the same surface are arranged in plurality; Preferably, a plurality of the recesses located on the same surface are arranged around the display area; Preferably, the plurality of depressions located on the same surface are arranged around the display area to form a plurality of nested rings.

6. The display panel according to any one of claims 1 to 5, characterized in that: Also includes: The protective layer is at least located in the border area of ​​the cover plate, and the protective layer is arranged on the side of the cover plate where the recess is provided, and the protective layer is connected to the filling part.

7. The display panel according to claim 6, characterized in that: The protective layer at least covers the depression extending to the outer edge in the orthographic projection of the screen body; Preferably, the material of the filling part is the same as that of the protective layer, and the connected filling part and the protective layer are integrally formed; Preferably, the materials of the filling part and the protective layer both include black glue; Preferably, the protective layer comprises a light-proof layer.

8. A method for preparing a display panel, characterized in that: include: Providing a display panel to be cut, the display panel to be cut comprising a display area, a frame area and a to-be-cut area, the frame area surrounds the display area, the to-be-cut area surrounds at least a portion of the frame area, and a cutting line is provided between the to-be-cut area and the frame area; Cutting is performed along the cutting line of the display panel to be cut, and the to-be-cut area of ​​the display panel to be cut is removed to obtain a display panel.

9. The preparation method according to claim 8, characterized in that: The providing the display panel to be cut comprises: A cover plate to be cut and a screen body to be cut are provided, wherein the cover plate to be cut and the screen body to be cut respectively have the display area, the frame area and the area to be cut, wherein at least one surface of the cover plate to be cut in the thickness direction has at least one depression, and at least part of the depression intersects with the cutting line, so that part of the depression is located in the frame area, and another part of the depression is located in the area to be cut; Filling the filling material at least in the recess intersecting the cutting line to form a filling portion, so that a portion of the filling portion is located on the cutting line; Covering the cover plate to be cut on the screen body to be cut to obtain the display panel to be cut; Preferably, the step of covering the cover plate to be cut with the screen body to be cut further comprises: Prepare a protective layer on the side of the cover plate to be cut having the recess, so that the protective layer is connected to the filling portion, and the orthographic projection of the protective layer on the screen body to be cut at least covers the recess intersecting with the cutting line; Preferably, the protective layer covers the frame area and the area to be cut of the cover plate to be cut, and after preparing the protective layer on the side of the cover plate to be cut having the recess, the method further comprises: The inner edge of the protective layer is aligned with the edge of the display area of ​​the screen body to be cut, so that the cover plate to be cut is covered on the screen body to be cut.

10. A display device, characterized in that: Comprising the display panel as described in any one of claims 1-7.

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