Display module and display device

Abstract

The invention relates to a display module and a display device. The display module comprises a screen body, a supporting layer and a functional layer group. The screen body comprises a first straight part and a first corner bending part connected with the first straight part. The supporting layer is arranged on one side of the screen body; the supporting layer comprises a second straight part and a second corner bending part connected with the second straight part, the second straight part corresponds to the first straight part, and the second corner bending part corresponds to the first corner bending part; and the second corner bending part is provided with a notch. The functional layer is assembled on one side, deviating from the supporting layer, of the screen body; the functional layer group comprises a connecting layer and a functional layer, and the connecting layer is arranged between the screen body and the functional layer; the connecting layer comprises a first connecting part, and the first connecting part is connected to the screen body and the functional layer. In the thickness direction of the screen body, the outline of the orthographic projection of the first connecting part on the plane where the screen body is located is located in the outline of the orthographic projection of the notch on the plane where the screen body is located. In this way, the fold degree of the corners of the display module can be reduced.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module and a display device. Background Art

[0002] Organic Light Emitting Diode (OLED) display technology is regarded as the most promising new flat panel display technology for the next generation. Currently, the curved screen structure in OLED display modules is gradually occupying the market, especially the four-curved display module with four sides set as curved surfaces has become a key research direction. However, the existing four-curved display module has wrinkles when the layers at the four corners are bonded together. Summary of the invention

[0003] Based on this, it is necessary to provide a display module and a display device that can reduce corner wrinkles.

[0004] In a first aspect, an embodiment of the present application provides a display module, including:

[0005] A screen body, the screen body comprising a first straight portion and a first corner curved portion connected to the first straight portion;

[0006] The support layer is arranged on one side of the screen body; the support layer includes a second straight portion and a second corner curved portion connected to the second straight portion, the second straight portion is arranged corresponding to the first straight portion, and the second corner curved portion is arranged corresponding to the first corner curved portion; wherein a notch is arranged on the second corner curved portion;

[0007] The functional layer group is arranged on the side of the screen body away from the supporting layer; the functional layer group includes a connecting layer and a functional layer, the connecting layer is arranged between the screen body and the functional layer; the connecting layer includes a first connecting portion, the first connecting portion is connected to the screen body and the functional layer;

[0008] Along the thickness direction of the screen body, the outline of the orthographic projection of the first connecting portion on the plane where the screen body is located is located within the outline of the orthographic projection of the notch on the plane where the screen body is located.

[0009] The display module provided by the embodiment of the present application is provided by arranging a support layer on one side of the screen body; the support layer includes a second straight portion and a second corner curved portion connected to the second straight portion, and a notch is provided on the second corner curved portion. In addition, the functional layer group is arranged on the side of the screen body away from the support layer; the functional layer group includes a connecting layer and a functional layer, and the connecting layer is arranged between the screen body and the functional layer; the connecting layer includes a first connecting portion, and the first connecting portion is connected to the screen body and the functional layer. And along the thickness direction of the screen body, the contour of the orthographic projection of the first connecting portion on the plane where the screen body is located is located within the contour of the orthographic projection of the notch on the plane where the screen body is located. On the one hand, the stress of the corner of the screen body and the corner of the support layer can be released through the notch, so that the degree of wrinkles at the corner of the display module can be reduced; on the other hand, the area of ​​the screen body corresponding to the notch can be tightly connected by the first connecting portion, which can prevent the area of ​​the screen body corresponding to the notch from wrinkling and accumulating to other areas, so that the degree of wrinkles at the corner of the display module can be further reduced.

[0010] In one embodiment, the connection layer further comprises:

[0011] A second connection portion is connected to the screen body and the functional layer, and along the thickness direction of the screen body, an outline of an orthographic projection of the second connection portion on the plane where the screen body is located is located outside an outline of an orthographic projection of the notch on the plane where the screen body is located;

[0012] Wherein, the connection strength between the first connection part and the screen body is greater than the connection strength between the second connection part and the screen body;

[0013] Optionally, the connection strength between the first connection part and the functional layer is greater than the connection strength between the second connection part and the functional layer;

[0014] Optionally, the material of the first connecting portion includes a first adhesive;

[0015] Optionally, the material of the second connecting portion includes a second adhesive.

[0016] In one embodiment, the first connecting portion and the second connecting portion are connected to each other;

[0017] Optionally, the first connecting portion and the second connecting portion are spliced;

[0018] Optionally, along the thickness direction of the screen body, an outline of an orthographic projection of a portion of the first connecting portion on the plane where the screen body is located coincides with an outline of an orthographic projection of a portion of the second connecting portion on the plane where the screen body is located;

[0019] Optionally, a connecting piece is provided on a side of the first connecting portion facing the second connecting portion, and a matching piece is provided on a side of the second connecting portion facing the first connecting portion, and the connecting piece is connected to the matching piece.

[0020] In one embodiment, along the thickness direction of the screen body, the area of ​​the orthographic projection of the notch on the plane where the screen body is located is A, and the area of ​​the orthographic projection of the first connecting portion on the plane where the screen body is located is B;

[0021] Among them, (9 / 10)A≤B≤A;

[0022] Optionally, an outline of an orthographic projection of the first connecting portion on the plane where the screen body is located coincides with an outline of an orthographic projection of the notch on the plane where the screen body is located.

[0023] In one embodiment, there are a plurality of first connection parts and a plurality of notches, and the number of the plurality of first connection parts corresponds to the number of the plurality of notches one by one;

[0024] Optionally, the shapes of the plurality of first connection portions correspond one-to-one to the shapes of the plurality of notches.

[0025] In one embodiment, the notch extends along the direction from the second corner curved portion toward the second straight portion, and along the thickness direction of the screen body, the contour of the orthographic projection of part of the notch on the plane where the screen body is located is located outside the contour of the orthographic projection of the first corner curved portion on the plane where the screen body is located;

[0026] Optionally, along the thickness direction of the screen body, the contour of the orthographic projection of the notch on the plane where the screen body is located coincides with the contour of the orthographic projection of the first corner bent portion on the plane where the screen body is located.

[0027] In one embodiment, the number of gaps is N, N is a positive integer, and N ≥ 1;

[0028] Optionally, when N=1, along the thickness direction of the screen body, the area of ​​the orthographic projection of the notch on the plane where the screen body is located is A, and the area of ​​the orthographic projection of the first corner bent portion on the plane where the screen body is located is C;

[0029] Among them, 0<A≤(1 / 3)C;

[0030] Optionally, when N≥2, along the thickness direction of the screen body, the sum of the areas of the orthographic projections of the notch on the plane where the screen body is located is A, and the area of ​​the orthographic projection of the first corner curved portion on the plane where the screen body is located is C;

[0031] Among them, 0<A≤[N / (2N+1)]C.

[0032] In one embodiment, along the thickness direction of the screen body, the projection shape of the notch on the plane where the screen body is located is a fan shape;

[0033] Optionally, along the thickness direction of the screen body, the circular arc of the fan-shaped part coincides with the side of the second corner curved part away from the second straight part;

[0034] Optionally, there are multiple notches, and the centers of the corresponding fan-shaped projections of the notches are concentric.

[0035] In one embodiment, the functional layer set further includes:

[0036] A protective layer, disposed on a side of the functional layer facing away from the connecting layer;

[0037] Optionally, the functional layer group is a polarizer;

[0038] Optionally, the functional layer is a polarizing layer;

[0039] Optionally, the material of the functional layer is polyvinyl alcohol;

[0040] Optionally, the material of the connecting layer is pressure-sensitive adhesive;

[0041] Optionally, the material of the protective layer is cellulose triacetate.

[0042] In a second aspect, an embodiment of the present application provides a display device, comprising the display module in the first aspect.

[0043] The display device provided in the embodiment of the present application can, on the one hand, release the stress of the fitting between the corners of the screen body and the corners of the supporting layer through the notch, thereby reducing the degree of wrinkles at the corners of the display module, thereby reducing the degree of wrinkles at the corners of the display device; on the other hand, the area of ​​the screen body corresponding to the notch can be tightly connected by the first connecting part, which can prevent the area of ​​the screen body corresponding to the notch from accumulating wrinkles toward other areas, thereby further reducing the degree of wrinkles at the corners of the display module, thereby further reducing the degree of wrinkles at the corners of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of the present application, the drawings required for use in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 A schematic diagram of the structure of a display module provided in one embodiment of the present application.

[0046] Figure 2 for Figure 1 A side view of the display module is shown.

[0047] Figure 3 A schematic diagram of the structure of a screen body in a display module provided in one embodiment of the present application.

[0048] Figure 4 A schematic diagram of the structure of a support layer in a display module provided in one embodiment of the present application.

[0049] Figure 5 for Figure 4 A local enlarged schematic diagram of point A in the middle.

[0050] Figure 6 A schematic diagram of the structure of a functional layer group in a display module provided in one embodiment of the present application.

[0051] Figure 7 for Figure 6 A local enlarged schematic diagram of point A in the middle.

[0052] Figure 8 for Figure 1 Schematic cross-sectional view at AA in the middle.

[0053] Fig. 9 Another structural schematic diagram of a display module provided in one embodiment of the present application.

[0054] Fig.10 A schematic diagram of the structure of a display device provided in one embodiment of the present application.

[0055] Description of reference numerals:

[0056] 100. Display device; 10. Display module; 11. Screen body; 111. First straight portion; 112. First corner curved portion; 12. Support layer; 121. Second straight portion; 122. Second corner curved portion; 1221. Notch; 13. Functional layer group; 131. Connecting layer; 1311. First connecting portion; 1312. Second connecting portion; 132. Functional layer; 133. Protective layer. DETAILED DESCRIPTION

[0057] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0058] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, they do not represent any order, quantity or importance, but are only used to distinguish different components. These terms are only used to distinguish one element from another element. For example, without departing from the scope of the present application, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0060] At present, the curved screen structure in OLED display modules is gradually occupying the market, especially the four-curved display module with four sides set as curved surfaces has become a key research direction.

[0061] It should be noted that when one of the sides of a display module is a curved surface, the display module is called a "curved screen". At the same time, for the convenience of explanation, this application refers to a display module with four sides set as curved surfaces as a "four-curved display module".

[0062] It should be noted that the display module includes a multi-layer structure stacked and bonded to each other. When the display module is designed as a four-curved display module with four curved sides, the corners of the four-curved display module will be bent from multiple directions. Therefore, when the layers of structure of the four-curved display module are bonded together, redundancy of the layers of structure will occur at the corners, causing wrinkles at the corners of the four-curved display module. On the one hand, when wrinkles exist at the corners of the four-curved display module, it will affect the aesthetics of the four-curved display module; on the other hand, it will affect the bonding between the layers of the four-curved display module and affect the normal display of the four-curved display module.

[0063] Of course, the situation where wrinkles occur at the corners of the display module is not limited to the four-curved display module. It can be understood that as long as any two adjacent edges of the display module are set as curved surfaces, the above-mentioned redundancy and wrinkle problems will occur at the connection of the two adjacent edges, that is, corresponding to one of the corners of the display module. Therefore, the problem of wrinkles at the corners of the display module is not limited to the four-curved display module. The reason why the four-curved display module has become a key research direction is that in order to maintain the symmetrical beauty of the four corners of the display module, the four corners of the display module need to be set as a curved structure.

[0064] First, refer to Figure 1 As shown, the embodiment of the present application provides a display module 10. Figure 1 and Figure 2 As shown, the display module 10 includes a screen body 11, a support layer 12 and a functional layer group 13. Figure 3 As shown, the screen body 11 includes a first straight portion 111 and a first corner curved portion 112 connected to the first straight portion 111. Figure 4 and Figure 5As shown, the support layer 12 is arranged on one side of the screen body 11; the support layer 12 includes a second straight portion 121 and a second corner curved portion 122 connected to the second straight portion 121, the second straight portion 121 is arranged corresponding to the first straight portion 111, and the second corner curved portion 122 is arranged corresponding to the first corner curved portion 112; wherein a notch 1221 is arranged on the second corner curved portion 122. The functional layer group 13 is arranged on the side of the screen body 11 away from the support layer 12. Figure 6 and Figure 7 As shown, the functional layer group 13 includes a connection layer 131 and a functional layer 132, wherein the connection layer 131 is disposed between the screen body 11 and the functional layer 132; the connection layer 131 includes a first connection portion 1311, and the first connection portion 1311 is connected to the screen body 11 and the functional layer 132. Along the thickness direction of the screen body 11, the contour of the orthographic projection of the first connection portion 1311 on the plane where the screen body 11 is located is located within the contour of the orthographic projection of the notch 1221 on the plane where the screen body 11 is located.

[0065] The display module 10 provided in the embodiment of the present application is referred to Figure 8 As shown, by arranging the support layer 12 on one side of the screen body 11; the support layer 12 includes a second straight portion 121 and a second corner curved portion 122 connected to the second straight portion 121, and a notch 1221 is provided on the second corner curved portion 122. In addition, the functional layer group 13 is arranged on the side of the screen body 11 away from the support layer 12; the functional layer group 13 includes a connecting layer 131 and a functional layer 132, and the connecting layer 131 is arranged between the screen body 11 and the functional layer 132; the connecting layer 131 includes a first connecting portion 1311, and the first connecting portion 1311 is connected to the screen body 11 and the functional layer 132. And along the thickness direction of the screen body 11, the contour of the orthographic projection of the first connecting portion 1311 on the plane where the screen body 11 is located is located within the contour of the orthographic projection of the notch 1221 on the plane where the screen body 11 is located. On the one hand, the stress of the corners of the screen body 11 and the corners of the supporting layer 12 can be released through the notch 1221, so that the degree of wrinkles at the corners of the display module 10 can be reduced; on the other hand, the area of ​​the screen body 11 corresponding to the notch 1221 can be tightly connected through the first connecting part 1311, which can prevent the area of ​​the screen body 11 corresponding to the notch 1221 from accumulating wrinkles toward other areas, so that the degree of wrinkles at the corners of the display module 10 can be further reduced.

[0066] Specifically, the screen body 11 is the main display area of ​​the display module 10, and is used to display text, images, videos and other information for users. The support layer 12 is arranged on one side of the screen body 11. On the one hand, it is used to support and fix the screen body 11 during the assembly and production of the display module 10; on the other hand, it is used to protect the screen body 11 from external damage during the display of the display module 10, thereby improving the service life of the screen body 11. The functional layer group 13 is arranged on the side of the screen body 11 away from the supporting layer 12, and is used to provide various functional conversions for the screen body 11, so that the normal display of the screen body 11 can be achieved under the conversion functions of the functional layer group 13.

[0067] Exemplarily, the support layer 12 is disposed on a side of the backlight side of the screen body 11 , and the functional layer group 13 is disposed on a side of the light incident side of the screen body 11 , so as to achieve normal display of the display module 10 .

[0068] Among them, the screen body 11 includes a first straight portion 111 and a first corner bent portion 112 connected to the first straight portion 111, that is, the screen body 11 is constructed as a curved screen body 11 with at least one curved corner through the first corner bent portion 112. Since the display module 10 is composed of a plurality of structural layers stacked and bonded together, such as a support layer 12, a screen body 11 and a functional layer group 13, in order to set the display module 10 as a curved display module 10 with at least one curved corner, similarly, the support layer 12 includes a second straight portion 121 and a second corner bent portion 122 connected to the second straight portion 121, that is, the support layer 12 is constructed as a curved support layer 12 with at least one curved corner through the second corner bent portion 122. At the same time, in order to ensure that the curved corners of the support layer 12 and the screen body 11 are in the same position relative to the display module 10, the second straight portion 121 is arranged corresponding to the first straight portion 111, and the second corner bent portion 122 is arranged corresponding to the first corner bent portion 112.

[0069] Furthermore, since the second corner bent portion 122 is provided with a notch 1221, during the stacking and bonding process of the support layer 12 and the screen body 11, on the one hand, the redundancy of the support layer 12 at the corner of the screen body 11 can be reduced through the notch 1221, thereby avoiding the accumulation of wrinkles on the support layer 12 in the area corresponding to the notch 1221, and at the same time, avoiding the accumulation of wrinkles on the support layer 12 from the corner area outside the notch 1221 to the area where the notch 1221 is located; on the other hand, the notch 1221 can release the stress of the bonding between the corner of the screen body 11 and the corner of the support layer 12, thereby reducing the degree of wrinkles on the corner of the display module 10.

[0070] In addition, since the connecting layer 131 includes the first connecting portion 1311, the first connecting portion 1311 is connected to the screen body 11 and the functional layer 132, along the thickness direction of the screen body 11, the outline of the orthographic projection of the first connecting portion 1311 on the plane where the screen body 11 is located is located within the outline of the orthographic projection of the notch 1221 on the plane where the screen body 11 is located, so that the area of ​​the screen body 11 corresponding to the notch 1221 can be tightly connected through the first connecting portion 1311, so that in the process of connecting the screen body 11 with the supporting layer 12, the first connecting portion 1311 can provide a tensioning force for the area of ​​the screen body 11 corresponding to the notch 1221, thereby preventing the area of ​​the screen body 11 corresponding to the notch 1221 from stacking toward the area outside the notch 1221 in the supporting layer 12, thereby further reducing the degree of wrinkles at the corners of the display module 10.

[0071] Since the present application sets a notch 1221 on the supporting layer 12 on the backlight side of the screen body 11, the degree of wrinkles between the screen body 11 and the supporting layer 12 can be reduced by releasing stress. At the same time, the first connecting portion 1311 on the light incident side of the screen body 11 can provide a tensioning force for the area of ​​the screen body 11 corresponding to the notch 1221, thereby preventing the screen body 11 from wrinkling in the area outside the notch 1221 of the supporting layer 12, thereby reducing the degree of wrinkles between the supporting layer 12, the screen body 11 and the functional layer group 13, and further reducing the degree of wrinkles of the display module 10. On the one hand, the aesthetics of the display module 10 can be improved; on the other hand, the display module 10 can display normally.

[0072] In one embodiment, the connection layer 131 further includes a second connection portion 1312. Figure 6 , Figure 7 and Figure 8 As shown, the second connection part 1312 is connected to the screen body 11 and the functional layer 132. Along the thickness direction of the screen body 11, the outline of the orthographic projection of the second connection part 1312 on the plane where the screen body 11 is located is located outside the outline of the orthographic projection of the notch 1221 on the plane where the screen body 11 is located; wherein, the connection strength between the first connection part 1311 and the screen body 11 is greater than the connection strength between the second connection part 1312 and the screen body 11.

[0073] In this way, the second connecting portion 1312 is connected to the functional layer 132 and the area outside the screen body 11 corresponding to the notch 1221, so that the connection tightness between the screen body 11 and the functional layer 132 can be improved through the second connecting portion 1312, thereby avoiding the screen body 11 and the functional layer 132 from being separated from the functional layer 132 in the area outside the screen body 11 corresponding to the notch 1221, thereby ensuring the normal operation of the display module 10.

[0074] It should be noted that since the connection strength between the first connection part 1311 and the screen body 11 is greater than the connection strength between the second connection part 1312 and the screen body 11, on the basis that the second connection part 1312 satisfies the connection stability between the screen body 11 and the functional layer 132, the first connection part 1311 with higher connection strength can provide a higher connection force between the screen body 11 and the functional layer 132, so that in the process of connecting the screen body 11 to the supporting layer 12, a greater tensioning force is provided for the area of ​​the screen body 11 corresponding to the notch 1221 of the supporting layer 12, thereby avoiding the area of ​​the screen body 11 corresponding to the notch 1221 to be stacked toward the area outside the notch 1221 in the supporting layer 12. In this way, the degree of wrinkles at the corners of the display module 10 can be reduced.

[0075] In one embodiment, the connection strength between the first connection portion 1311 and the functional layer 132 is greater than the connection strength between the second connection portion 1312 and the functional layer 132 .

[0076] Similarly, on the one hand, the first connecting portion 1311 can be used to achieve a tight connection between the functional layer 132 and the area of ​​the screen body 11 corresponding to the notch 1221, thereby improving the stability of the connection between the screen body 11 and the functional layer 132 in the area corresponding to the notch 1221; on the other hand, the first connecting portion 1311 with higher connection strength can be used to provide a higher connection force between the screen body 11 and the functional layer 132, thereby providing a greater tensioning force for the area of ​​the screen body 11 corresponding to the notch 1221 of the supporting layer 12 during the connection between the screen body 11 and the supporting layer 12, thereby reducing the degree of wrinkles at the corners of the display module 10.

[0077] In one embodiment, the material of the first connection portion 1311 includes a first adhesive.

[0078] In this way, the functional layer 132 and the area of ​​the screen body 11 corresponding to the notch 1221 can be connected by the first adhesive. On the one hand, the first adhesive is directly connected without preparing other connection structures, which can facilitate the operation of the operator; on the other hand, the cost of the first adhesive is low, which can save the production cost in the processing and assembly process of the display module 10. In addition, the first adhesive can be used for connecting different types of material structures, which can better adapt to the shapes and sizes of different structures, thereby ensuring a more secure connection.

[0079] In one embodiment, the material of the second connection portion 1312 includes a second adhesive.

[0080] Similarly, the functional layer 132 and the area of ​​the screen body 11 corresponding to the area outside the notch 1221 can be connected by a second adhesive. On the one hand, the second adhesive is directly connected without the need to prepare other connection structures, which can facilitate the operation of the operator; on the other hand, the cost of the second adhesive is low, which can save the production cost in the processing and assembly process of the display module 10. In addition, the second adhesive can be used for connecting different types of material structures, which can better adapt to the shapes and sizes of different structures, thereby ensuring a more secure connection.

[0081] In one embodiment, the first connection portion 1311 and the second connection portion 1312 are connected to each other.

[0082] In this way, the first connecting part 1311 and the second connecting part 1312 can be connected as a unified whole, so that in the process of the connecting layer 131 connecting the screen body 11 and the functional layer 132, the screen body 11, the connecting layer 131 and the functional layer 132 can be stably connected, thereby improving the overall stability of the display module 10.

[0083] In one embodiment, the first connection portion 1311 and the second connection portion 1312 are spliced.

[0084] In this way, on the one hand, during the preparation of the connecting layer 131, different structures can be set according to the different performances of the first connecting part 1311 and the second connecting part 1312, so that the connecting layer 131 can meet different usage requirements in different areas by splicing the first connecting part 1311 and the second connecting part 1312.

[0085] Exemplarily, the connection strength of the first connection portion 1311 of the connection layer 131 is greater than the connection strength of the second connection portion 1312 .

[0086] On the other hand, the splicing of the first connection part 1311 and the second connection part 1312 can flexibly control the position and area of ​​the connection between the first connection part 1311 and the second connection part 1312 according to actual production needs, thereby meeting different production needs and improving the adaptability of the connection layer 131 and the screen body 11 or the functional layer 132 during the actual processing process.

[0087] In one embodiment, along the thickness direction of the screen body 11 , the contour of the orthographic projection of a portion of the first connection portion 1311 on the plane where the screen body 11 is located coincides with the contour of the orthographic projection of a portion of the second connection portion 1312 on the plane where the screen body 11 is located.

[0088] In this way, the connection between the first connection part 1311 and the second connection part 1312 can be achieved by only overlapping part of the first connection part 1311 and part of the second connection part 1312, which can facilitate the operation of the operator and shorten the operation time of the operator to improve production efficiency.

[0089] In one embodiment, a connecting piece is disposed on a side of the first connecting portion 1311 facing the second connecting portion 1312 , and a matching piece is disposed on a side of the second connecting portion 1312 facing the first connecting portion 1311 , and the connecting piece is connected to the matching piece.

[0090] In this way, the connection between the first connecting part 1311 and the second connecting part 1312 can be achieved through the connection between the connecting part and the matching part. Since the first connecting part 1311 and the second connecting part 1312 are not stacked or overlapped with each other, the overall thickness of the connecting layer 131 can be ensured to be uniform, thereby ensuring the overall flatness of the spliced ​​connecting layer 131, and further ensuring the overall flatness of the display module 10, thereby improving the display effect of the display module 10.

[0091] In one embodiment, along the thickness direction of the screen body 11, the orthographic projection area of ​​the notch 1221 on the plane where the screen body 11 is located is A, and the orthographic projection area of ​​the first connecting portion 1311 on the plane where the screen body 11 is located is B. Among them, (9 / 10)A≤B≤A.

[0092] It should be noted that (9 / 10)A≤B≤A, that is, the minimum area of ​​B is (9 / 10)A, and the maximum area of ​​B is A. Specifically, since (9 / 10)A≤B≤A, it can be ensured that the first connecting portion 1311 provides sufficient tension for the area of ​​the screen body 11 corresponding to the notch 1221, thereby preventing the area of ​​the screen body 11 corresponding to the notch 1221 from stacking toward the area outside the notch 1221 in the support layer 12, so that the degree of wrinkles at the corner of the display module 10 can be further reduced.

[0093] It can be understood that when the area of ​​B is (9 / 10) A, on the one hand, it can ensure that the first connection portion 1311 provides sufficient tension for the area of ​​the screen body 11 corresponding to the notch 1221, and on the other hand, the amount of the first connection portion 1311 can be appropriately saved, thereby reducing the production cost of the display module 10 to a certain extent. At the same time, it can avoid the situation where the first connection portion 1311 is used too much and overflows during the connection process between the connection layer 131 and the screen body 11, thereby affecting the normal use of the display module 10.

[0094] In one embodiment, the contour of the orthographic projection of the first connection portion 1311 on the plane where the screen body 11 is located coincides with the contour of the orthographic projection of the notch 1221 on the plane where the screen body 11 is located.

[0095] In this way, on the one hand, it can be ensured to the greatest extent that the first connecting part 1311 provides sufficient tensioning force for the area of ​​the screen body 11 corresponding to the notch 1221, thereby minimizing the degree of wrinkles at the corners of the display module 10; on the other hand, during the process of processing the first connecting part 1311 and the supporting layer 12, since the outline of the orthographic projection of the first connecting part 1311 on the plane where the screen body 11 is located coincides with the outline of the orthographic projection of the notch 1221 on the plane where the screen body 11 is located, the first connecting part 1311 and the notch 1221 can be kept at the same size, thereby reducing the production difficulty of the operator and facilitating the production of the operator.

[0096] In one embodiment, referring to Figure 4 and Figure 5 As shown, there are multiple first connection parts 1311 and multiple notches 1221 , and the number of the multiple first connection parts 1311 corresponds to the number of the multiple notches 1221 one by one.

[0097] It should be noted that since there are multiple first connecting parts 1311 and multiple notches 1221, the stress on the area outside the notches 1221 of the first connecting parts 1311 can be dispersed through the multiple notches 1221, so as to further release the stress of the corners of the screen body 11 and the corners of the supporting layer 12. At the same time, the multiple first connecting parts 1311 can improve the tightness of the connection between the functional layer 132 and the screen body 11 corresponding to the notch 1221 area, so as to further reduce the degree of wrinkles at the corners of the display module 10.

[0098] Since the number of the multiple first connection parts 1311 and the multiple notches 1221 corresponds one to one, on the one hand, the wrinkle degree of the corner between the support layer 12 and the screen body 11 can be reduced by the cooperation between the multiple first connection parts 1311 and the multiple notches 1221 that correspond one to one, and finally the wrinkle degree of the corner of the display module 10 can be reduced; on the other hand, the stability between the support layer 12, the screen body 11 and the connection layer 131 can be improved by the multiple first connection parts 1311 and the multiple notches 1221 that correspond one to one, thereby improving the overall stability of the display module 10.

[0099] In one embodiment, the shapes of the first connection portions 1311 correspond to the shapes of the notches 1221 .

[0100] Similarly, since the shapes of the multiple first connecting parts 1311 and the multiple notches 1221 correspond one to one, on the one hand, the wrinkle degree at the corner between the supporting layer 12 and the screen body 11 can be reduced through the cooperation between the multiple first connecting parts 1311 and the multiple notches 1221 whose shapes correspond one to one, thereby finally reducing the wrinkle degree at the corner of the display module 10; on the other hand, the stability between the supporting layer 12, the screen body 11 and the connecting layer 131 can be improved through the cooperation between the multiple first connecting parts 1311 and the multiple notches 1221 whose shapes correspond one to one, thereby improving the overall stability of the display module 10.

[0101] In one embodiment, the notch 1221 extends along the direction of the second corner bent portion 122 toward the second straight portion 121, and along the thickness direction of the screen body 11, the outline of the orthographic projection of part of the notch 1221 on the plane where the screen body 11 is located is located outside the outline of the orthographic projection of the first corner bent portion 112 on the plane where the screen body 11 is located.

[0102] In this way, the stress at the connection between the second corner bent portion 122 and the second straight portion 121 can be released by the notch 1221 extending to the second straight portion 121, thereby reducing the degree of wrinkles at the connection between the second corner bent portion 122 and the second straight portion 121, thereby further reducing the degree of wrinkles of the display module 10.

[0103] In one embodiment, along the thickness direction of the screen body 11 , the contour of the orthographic projection of the notch 1221 on the plane where the screen body 11 is located coincides with the contour of the orthographic projection of the first corner bent portion 112 on the plane where the screen body 11 is located.

[0104] In this way, the redundancy of the support layer 12 and the screen body 11 at the corners can be completely eliminated, so that the support layer 12 will not be redundant at the corners of the screen body 11, and the support layer 12 can be prevented from piling up at the angles of the screen body 11, thereby preventing the support layer 12 from wrinkling at the corners of the screen body 11, and ultimately reducing the degree of wrinkling at the corners of the display module 10.

[0105] In one embodiment, the number of the gaps 1221 is N, where N is a positive integer and N≥1.

[0106] Thus, when N=1, only one notch 1221 needs to be provided on the support layer 12, and the stress of the corners of the screen body 11 and the support layer 12 can be released through the notch 1221, thereby reducing the degree of wrinkles at the corners of the display module 10. At the same time, since only one notch 1221 needs to be provided at this time, the operation of the operator can be simplified and convenient for the operator.

[0107] Furthermore, when N≥2, the number of notches 1221 is multiple, and the multiple notches 1221 can release the stress of the corners of the screen body 11 and the corners of the supporting layer 12 at different position areas of the supporting layer 12, thereby improving the degree and effect of stress release, thereby further reducing the degree of wrinkles at the corners of the display module 10.

[0108] It is understandable that the more the notches 1221 are, the better the stress release is and the better the effect of reducing the wrinkle degree is. Of course, when the number of notches 1221 is too large, it is bound to increase the difficulty of manufacturing the support layer 12 and reduce the tightness of the connection between the support layer 12 and the screen body 11. Here, there is no upper limit on the notches 1221. The number of notches 1221 needs to be set in combination with specific production and processes. Here, the number of notches 1221 is not repeated.

[0109] In one embodiment, when N=1, along the thickness direction of the screen body 11, the orthographic projection area of ​​the notch 1221 on the plane where the screen body 11 is located is A, and the orthographic projection area of ​​the first corner curved portion 112 on the plane where the screen body 11 is located is C. Wherein, 0<A≤(1 / 3)C.

[0110] It should be noted that 0<A≤(1 / 3)C, that is, the minimum area of ​​A is greater than 0, and the maximum area of ​​A is (1 / 3)C. Specifically, since the minimum area of ​​A is greater than 0, that is, the second corner curved portion 122 is provided with a notch 1221, the stress of the corner of the screen body 11 and the corner of the supporting layer 12 can be released through the notch 1221, so that the wrinkle degree of the corner of the display module 10 can be reduced.

[0111] It should be noted that since the maximum area of ​​A is (1 / 3)C, that is, at this time, the stress of the corners of the screen body 11 and the corners of the supporting layer 12 are released through the notch 1221, and the degree of wrinkles at the corners of the display module 10 is reduced. At the same time, the notch 1221 does not occupy too much area of ​​the second corner bend 122, that is, the second corner bend 122 can still maintain sufficient connection tightness with the screen body 11, so that the supporting layer 12 can provide sufficient support and protection for the screen body 11, thereby improving the service life of the screen body 11.

[0112] In one embodiment, when N≥2, along the thickness direction of the screen body 11, the sum of the areas of the orthographic projections of the notch 1221 on the plane where the screen body 11 is located is A, and the area of ​​the orthographic projection of the first corner curved portion 112 on the plane where the screen body 11 is located is C. Wherein, 0<A≤[N / (2N+1)]C.

[0113] It should be noted that 0<A≤[N / (2N+1)]C, that is, the minimum area of ​​A is greater than 0, and the maximum area of ​​A is [N / (2N+1)]C. Specifically, since the minimum area of ​​A is greater than 0, that is, the second corner bending portion 122 is provided with a notch 1221, the stress of the corner of the screen body 11 and the corner of the supporting layer 12 can be released through the notch 1221, so that the wrinkle degree of the corner of the display module 10 can be reduced.

[0114] It should be noted that since the maximum area of ​​A is [N / (2N+1)]C, that is, at this time, the stress of the corners of the screen body 11 and the corners of the support layer 12 is released through the notch 1221, and the degree of wrinkles at the corners of the display module 10 is reduced. At the same time, the notch 1221 does not occupy too much area of ​​the second corner bend 122, that is, the second corner bend 122 can still maintain sufficient connection tightness with the screen body 11, so that the support layer 12 can provide sufficient support and protection for the screen body 11, thereby improving the service life of the screen body 11.

[0115] In one embodiment, along the thickness direction of the screen body 11 , the projection shape of the notch 1221 is fan-shaped.

[0116] In this way, on the one hand, since the corners of the screen body 11 and the corners of the supporting layer 12 are both chamfered designs, the notch 1221 of the supporting layer 12 is set to be fan-shaped. On the one hand, it can reduce the design difficulty of designers and reduce the production difficulty of operators; on the other hand, in the specific area of ​​the corner, by setting the notch 1221 to be fan-shaped, the occupied space of the notch 1221 can be greatly increased, thereby improving the effect of stress release, and can better reduce the degree of wrinkles at the corner of the display module 10.

[0117] In one embodiment, along the thickness direction of the screen body 11 , the fan-shaped arc coincides with the side of the second corner curved portion 122 away from the second straight portion 121 .

[0118] In this way, when producing the support layer 12, the operator only needs to ensure that the outer side of the notch 1221 coincides with the side of the second corner bend 122 away from the second straight portion 121, that is, at this time, only the other two side edges of the fan-shaped area need to be cut off, which can facilitate the production of the operator. In addition, the stress of the corner of the screen body 11 and the corner of the support layer 12 will be completely released to the outside of the screen body 11 and the support layer 12 through the notch 1221, and the screen body 11 and the support layer 12 will not still have a corresponding structure on the side of the second corner bend 122 away from the second straight portion 121, which will cause incomplete stress release, thereby improving the effect of stress release and further reducing the degree of wrinkles at the corner of the display module 10.

[0119] In one embodiment, there are multiple notches 1221 , and the centers of the corresponding fan-shaped projections of the notches 1221 are concentric.

[0120] In this way, the stress on the area outside the notch 1221 of the first connection part 1311 can be dispersed through the multiple notches 1221, so that the stress of the corner of the screen body 11 and the corner of the support layer 12 can be further released. In addition, since the centers of the corresponding fan-shaped projections of each notch 1221 are concentric, on the one hand, when producing the support layer 12, the operator only needs to locate the centers of the multiple notches 1221 once, which can improve the production efficiency of the operator; on the other hand, it can ensure that the multiple notches 1221 are evenly arranged on the second corner bending part 122, so that the flatness and stability of the connection between the support layer 12 and the screen body 11 can be guaranteed, the overall flatness and stability of the display module 10 can be improved, and the display effect of the display module 10 can be improved.

[0121] In one embodiment, referring to Fig. 9 As shown, the functional layer group 13 further includes a protective layer 133 . The protective layer 133 is disposed on a side of the functional layer 132 that is away from the connecting layer 131 .

[0122] In this way, the functional layer 132 and the connecting layer 131 can be protected by the protective layer 133 , thereby ensuring that the functional layer 132 can stably play a corresponding role and improving the service life of the functional layer 132 and the connecting layer 131 .

[0123] In one embodiment, the functional layer group 13 is a polarizer.

[0124] It should be noted that the full name of polarizer is polarizing film, and the imaging of LCD must rely on polarized light. The reason why polarizer is called polarizer is that the polarizer facing the eyes of ordinary LCD is frosted to dissipate surface reflections and scatter light to increase the viewing angle of LCD.

[0125] In this way, since the functional layer group 13 is a polarizer, reflection can be reduced and the display effect of the display module 10 can be improved.

[0126] In one embodiment, the functional layer 132 is a polarizing layer.

[0127] In this way, the polarizing layer, as the core functional layer 132 of the polarizer, can play a polarizing role through the polarizing layer, thereby reducing reflection and improving the display effect of the display module 10.

[0128] In one embodiment, the material of the functional layer 132 is polyvinyl alcohol.

[0129] Specifically, since polyvinyl alcohol has the characteristics of high transparency, high ductility, good iodine adsorption, good film-forming properties, etc., the functional layer 132 can adsorb the two-way absorption molecules of iodine and then undergo stretching and alignment to play a polarization role. It is the core part of the polarizer and determines the key optical indicators of the polarizer, such as polarization performance, transmittance, and hue. It is also the main part that affects the hue and optical durability of the polarizer.

[0130] In one embodiment, the connection layer 131 is made of pressure-sensitive adhesive.

[0131] Specifically, since the pressure-sensitive adhesive has a high initial viscosity, that is, it takes effect quickly after contacting the surface, it can quickly fix and adhere the required structure, reduce the fixing time and improve work efficiency, thereby improving the connection tightness between the screen body 11 and the functional layer 132, and at the same time reducing the production and processing time of the display module 10.

[0132] In one embodiment, the material of the protection layer 133 is triacetyl cellulose.

[0133] Specifically, since polyvinyl alcohol is very easy to hydrolyze, in order to protect the physical properties of the functional layer 132, a protective layer 133 made of triacetyl cellulose is provided, which can not only protect the functional layer 132 but also provide the functional layer group 13 with high light transmittance and good water resistance.

[0134] Second, refer to Fig.10 As shown, an embodiment of the present application provides a display device 100, including the display module 10 in the first aspect.

[0135] The display device 100 provided in the embodiment of the present application can, on the one hand, release the stress of the corner of the screen body 11 and the corner of the supporting layer 12 through the notch 1221, so that the degree of wrinkles at the corner of the display module 10 can be reduced, thereby reducing the degree of wrinkles at the corner of the display device 100; on the other hand, the area of ​​the screen body 11 corresponding to the notch 1221 can be tightly connected through the first connecting portion 1311, which can prevent the area of ​​the screen body 11 corresponding to the notch 1221 from accumulating wrinkles toward other areas, so that the degree of wrinkles at the corner of the display module 10 can be further reduced, thereby further reducing the degree of wrinkles at the corner of the display device 100.

[0136] It can be understood that the display device 100 in the embodiment of the present application can be a laptop computer, a mobile phone, a wireless device, a personal digital assistant (PDA), a handheld or portable computer, a GPS receiver / navigator, a camera, an MP4 video player, a camcorder, a game console, a watch, a clock, a calculator, a television monitor, a flat-panel display, a computer monitor, a car display (for example, an odometer display, etc.), a navigator, a cockpit controller and / or display, a display of a camera view (for example, a display of a rearview camera in a vehicle), an electronic photo, an electronic billboard or sign, a projector, etc.

[0137] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be construed as being one in number.

[0138] 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.

[0139] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A display module, characterized in that: include: A screen body, the screen body comprising a first straight portion and a first corner curved portion connected to the first straight portion; A support layer is provided on one side of the screen body; the support layer comprises a second straight portion and a second corner curved portion connected to the second straight portion, the second straight portion is provided corresponding to the first straight portion, and the second corner curved portion is provided corresponding to the first corner curved portion; wherein a notch is provided on the second corner curved portion; A functional layer group is arranged on a side of the screen body away from the support layer; the functional layer group includes a connecting layer and a functional layer, the connecting layer is arranged between the screen body and the functional layer; the connecting layer includes a first connecting portion, the first connecting portion is connected to the screen body and the functional layer; Along the thickness direction of the screen body, an outline of an orthographic projection of the first connecting portion on the plane where the screen body is located is located within an outline of an orthographic projection of the notch on the plane where the screen body is located.

2. The display module according to claim 1, characterized in that: The connection layer also includes: A second connecting portion is connected to the screen body and the functional layer, and along the thickness direction of the screen body, an outline of an orthographic projection of the second connecting portion on the plane where the screen body is located is located outside an outline of an orthographic projection of the notch on the plane where the screen body is located; Wherein, the connection strength between the first connection part and the screen body is greater than the connection strength between the second connection part and the screen body; Optionally, the connection strength between the first connection portion and the functional layer is greater than the connection strength between the second connection portion and the functional layer; Optionally, the material of the first connecting portion includes a first adhesive; Optionally, the material of the second connecting portion includes a second adhesive.

3. The display module according to claim 2, characterized in that: The first connecting portion and the second connecting portion are connected to each other; Optionally, the first connecting portion and the second connecting portion are spliced; Optionally, along the thickness direction of the screen body, an outline of an orthographic projection of a portion of the first connecting portion on the plane where the screen body is located coincides with an outline of an orthographic projection of a portion of the second connecting portion on the plane where the screen body is located; Optionally, a connecting piece is provided on a side of the first connecting portion facing the second connecting portion, and a matching piece is provided on a side of the second connecting portion facing the first connecting portion, and the connecting piece is connected to the matching piece.

4. The display module according to claim 1, characterized in that: Along the thickness direction of the screen body, the area of ​​the orthographic projection of the notch on the plane where the screen body is located is A, and the area of ​​the orthographic projection of the first connecting portion on the plane where the screen body is located is B; Among them, (9 / 10)A≤B≤A; Optionally, an outline of an orthographic projection of the first connecting portion on the plane where the screen body is located coincides with an outline of an orthographic projection of the notch on the plane where the screen body is located.

5. The display module according to claim 1, characterized in that: There are a plurality of the first connecting parts and a plurality of the notches, and the number of the plurality of the first connecting parts corresponds to the number of the plurality of the notches one by one; Optionally, the shapes of the plurality of first connecting portions correspond one-to-one to the shapes of the plurality of notches.

6. The display module according to any one of claims 1 to 5, characterized in that: The notch extends along the direction of the second corner curved portion toward the second straight portion, and along the thickness direction of the screen body, the contour of the orthographic projection of part of the notch on the plane where the screen body is located is located outside the contour of the orthographic projection of the first corner curved portion on the plane where the screen body is located; Optionally, along the thickness direction of the screen body, an outline of an orthographic projection of the notch on the plane where the screen body is located coincides with an outline of an orthographic projection of the first corner bent portion on the plane where the screen body is located.

7. The display module according to claim 6, characterized in that: The number of the gaps is N, where N is a positive integer and N≥1; Optionally, when N=1, along the thickness direction of the screen body, the area of ​​the orthographic projection of the notch on the plane where the screen body is located is A, and the area of ​​the orthographic projection of the first corner bent portion on the plane where the screen body is located is C; Among them, 0<A≤(1 / 3)C; Optionally, when N≥2, along the thickness direction of the screen body, the sum of the areas of the orthographic projections of the notch on the plane where the screen body is located is A, and the area of ​​the orthographic projection of the first corner bent portion on the plane where the screen body is located is C; Among them, 0<A≤[N / (2N+1)]C.

8. The display module according to any one of claims 1 to 5, characterized in that: Along the thickness direction of the screen body, the projection shape of the notch on the plane where the screen body is located is a fan shape; Optionally, along the thickness direction of the screen body, the circular arc of the sector coincides with a side of the second corner curved portion away from the second straight portion; Optionally, there are multiple notches, and the centers of the corresponding fan-shaped projections of the notches are concentric.

9. The display module according to any one of claims 1 to 5, characterized in that: The functional layer group also includes: A protective layer, disposed on a side of the functional layer away from the connecting layer; Optionally, the functional layer group is a polarizer; Optionally, the functional layer is a polarizing layer; Optionally, the material of the functional layer is polyvinyl alcohol; Optionally, the connecting layer is made of pressure-sensitive adhesive; Optionally, the material of the protective layer is cellulose triacetate.

10. A display device, characterized in that: A display module comprising any one of claims 1 to 9.

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