Display module and display device

Abstract

The invention provides a display module and a display device. The display module comprises a display panel, the display panel comprises a display area and a non-display area at least surrounding one side of the display area, the non-display area is provided with a wire changing part and a bending part, the bending part is arranged on the side, away from the display area, of the wire changing part, and the wire changing part is provided with a wire changing hole; the polaroid is located on the first side of the display panel; the polaroid comprises a flat part and a concave part; the polaroid is overlapped with at least part of the line changing hole; the sealing glue layer is arranged in the non-display area, the sealing glue layer and the polaroid are located on the same side of the display panel, and the sealing glue layer and the concave part are at least partially overlapped. According to the display module, the attaching degree of the optical adhesive layer attached to the polaroid can be improved, bubbles are not prone to being generated between the optical adhesive layer and the polaroid, the appearance yield of the display module is improved, good electrostatic protection is provided for the wire changing hole, and the antistatic capacity of the display module is improved.

Description

Technical Field

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

[0002] Ultra-narrow bezel display screens are becoming more and more popular in the market due to their beautiful appearance and good visual effects. The narrow bezel display panel uses a bending process to reduce the lower bezel of the display panel. Currently, before the display backplane is bent, a sealing layer needs to be set on the non-display area to protect the wiring in this area. When the sealing layer is currently set, due to the siphon effect, the glue of the sealing layer is easy to overflow onto the protective film of the polarizer, that is, the height of the sealing layer exceeds the polarizer. When the protective film on the polarizer is removed and the optical adhesive layer is attached to the surface of the polarizer, the adhesive material that exceeds the polarizer will support the OCA (optical adhesive) layer, so that the optical adhesive cannot be fully attached to the surface of the polarizer, and bubbles are generated between the polarizer and the optical adhesive layer. As the lower bezel of the ultra-narrow bezel continues to shrink, the bubbles between the polarizer and the optical adhesive layer cannot be blocked by the ink layer, resulting in a poor appearance of the panel. Summary of the invention

[0003] In view of the problems in the prior art, an object of the present invention is to provide a display module and a display device, so as to improve the problem of bubbles between the polarizer and the optical adhesive layer and improve the appearance yield of the display module.

[0004] An embodiment of the present invention provides a display module, comprising: a display panel, comprising a display area and a non-display area surrounding at least one side of the display area, wherein a line-changing portion and a bending portion are provided in the non-display area, the bending portion is provided on a side of the line-changing portion away from the display area, and the line-changing portion is provided with a line-changing hole;

[0005] A polarizer, located on a first side of the display panel; the polarizer comprises a flat portion and a concave portion; the polarizer overlaps at least a portion of the line-changing hole;

[0006] The sealing layer is disposed in the non-display area. The sealing layer and the polarizer are located on the same side of the display panel, and the sealing layer and the recessed portion at least partially overlap.

[0007] In some embodiments, a spacing distance is provided between the flat portion of the polarizer and the sealing layer.

[0008] In some embodiments, in a direction perpendicular to the plane where the display module is located, a distance between the flat portion and the sealing layer is 0.02 mm to 0.05 mm.

[0009] In some embodiments, there is no spacing distance between the flat portion of the polarizer and the sealing layer.

[0010] In some embodiments, the sealing layer overlaps with at least a portion of the line-changing hole.

[0011] In some embodiments, a first back plate is further included, which is disposed on the second side of the display panel and at least a portion of the structure covers the line-changing hole.

[0012] In some embodiments, a distance between an edge of the recessed portion close to the non-display area and an edge of the first back plate close to the non-display area is less than 0.07 mm.

[0013] In some embodiments, the recessed portion is an L-shaped groove or a U-shaped groove.

[0014] In some embodiments, the height of the recessed portion is 10 μm to 50 μm.

[0015] In some embodiments, a second back plate is further included, which is disposed on the second side of the display panel and at least corresponds to the bending portion.

[0016] In some embodiments, a buffer layer is further provided between the first backplane and the second backplane.

[0017] In some embodiments, an optical adhesive layer and a cover plate are sequentially stacked on a side of the polarizer facing away from the display panel.

[0018] An embodiment of the present invention further provides a display device, comprising the display module as described in any one of the above items.

[0019] The display module and display device provided by the present invention have the following advantages:

[0020] By arranging a flat portion and a recessed portion on the polarizer, the sealing layer and the recessed portion at least partially overlap, and the recessed portion is used to improve the overflow boundary of the sealing layer, increase the difficulty of overflow of the sealing layer, and thereby make the height of the sealing layer overflowing into the recessed portion of the polarizer not higher than the height of the polarizer. The reduction in the height of the sealing layer near the recessed portion is beneficial to improving the fit of the optical adhesive layer to the polarizer, making it difficult for bubbles to be generated between the optical adhesive layer and the polarizer, thereby improving the appearance yield of the display module; and the polarizer overlaps with at least part of the line switching hole, and the recessed portion of the polarizer overlaps with part of the sealing layer, so that the line switching hole portion can be protected by the polarizer and / or the sealing layer, providing good electrostatic protection for the line switching hole portion, and improving the anti-static ability of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0022] Figure 1 It is a schematic diagram of a display module in the prior art without an optical adhesive layer and a cover plate attached thereto;

[0023] Figure 2 It is a schematic diagram of a display module in the prior art attached with an optical adhesive layer and a cover plate;

[0024] Figure 3 It is a schematic diagram of a display module in the prior art in which the sealing layer does not cover the line-changing hole;

[0025] Figure 4 is a schematic diagram of a display module provided by an embodiment of the present invention without an optical adhesive layer and a cover plate attached thereto;

[0026] Figure 5 is a plan view of a display module provided by an embodiment of the present invention;

[0027] Figure 6 is a schematic diagram of a display module provided by an embodiment of the present invention with an optical adhesive layer and a cover plate attached thereto;

[0028] Figure 7 is a schematic diagram of a display device provided by an embodiment of the present invention.

[0029] Reference numerals:

[0030] 100 Display module 20 Polarizer

[0031] 10 display module 30 sealing layer

[0032] 11 Cable change hole 41 First backplane

[0033] 12 First signal line 42 Second backplane

[0034] 13 Second signal line 50 Protection layer

[0035] AA Display area 60 Optical adhesive layer

[0036] NA Non-display area 70 Cover

[0037] NA1 line change unit 80 ink layer

[0038] NA2 bending portion 1000 display device DETAILED DESCRIPTION

[0039] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0040] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the represented specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, unless they contradict each other.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] It should be further understood that the terms "comprises" and "includes" indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition will only occur when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way.

[0043] Figure 1 FIG. 1 is a schematic diagram showing a display module in the prior art without an optical adhesive layer and a cover plate attached thereto. Figure 1As shown, the display module 100' includes a display panel 10', a polarizer 20' and a sealing layer 30' arranged on a first side of the display panel 10', a protective layer 50' arranged on the side of the polarizer 20' away from the display panel 10', and a first back plate 41' and a second back plate 42' arranged on the second side of the display panel 10'. The display panel 10' includes a display area AA' and a non-display area NA', the polarizer 20' at least overlaps with the display area AA', and the sealing layer 30' at least covers the routing portion of the non-display area NA'. A large number of fan-out routings are provided on the routing portion. When the display panel 10' is subjected to a bending process, the routing will generate greater stress. The provision of the sealing layer 30' can alleviate the stress generated when the routing is bent, and provide good insulation protection for the routing. The sealing layer 30' is fluid before being solidified. Due to the siphon effect, the edge of the sealing layer 30' close to the polarizer 20' will flow beyond the polarizer 20' during the manufacturing process (such as Figure 1 When the flowing sealing glue layer 30' is completely disposed in the non-display area NA', the shape of the sealing glue layer 30' is fixed by a curing process.

[0044] Figure 2 FIG. 1 shows a schematic diagram of a display module after an optical adhesive layer and a cover plate are attached to the display module. Figure 2 As shown, the display module 100' further includes an optical adhesive layer 60', a cover plate 70' and an ink layer 80'. The optical adhesive layer 60' is disposed on the side of the polarizer 20' away from the display panel 10'. The cover plate 70' is disposed on the side of the optical adhesive layer 60' away from the display panel 10'. The ink layer 80' is coated between the optical adhesive layer 60' and the cover plate 70'. The outer edge of the ink layer 80' is aligned with the cover plate 70', and the inner edge of the ink layer 80' is located on the inner side of the edge of the polarizer 20'. Before the optical adhesive layer 60' is disposed, the protective layer 50' on the polarizer 20' needs to be removed. Since the height of the cured sealing layer 30' near the edge of the polarizer 20' exceeds the height of the polarizer 20', when the optical adhesive layer 60' is attached to the surface of the polarizer 20' near this part, it will be lifted up by the sealing layer 30' that is higher than the polarizer 20' and cannot be completely attached to the surface of the polarizer 20'. As a result, bubbles are generated between the partially lifted structure of the optical adhesive layer 60' and the polarizer 20'. As the lower frame of the narrow frame continues to shrink, the distance VA' from the inner edge of the ink layer 80' to the edge of the polarizer 20' close to the sealing layer 30' will also shrink, and it is easy for the ink layer 80' to fail to cover the bubbles between the polarizer 20' and the optical adhesive layer 60', thereby causing the appearance of the display module to be poor.

[0045] In order to solve the problem that the sealant layer 30' lifts up the optical adhesive layer 60', causing bubbles to appear between the optical adhesive layer 60' and the polarizer 20', a method is to reduce the height of the sealant layer 30' so that the sealant layer 30' does not exceed the height of the polarizer 20'. However, when the thickness of the sealant layer 30' is reduced, it is easy for the sealant layer 30' to fail to cover the line switching hole 11' (such as Figure 3 As shown), the line-changing hole 11' is easily affected by static electricity, and if there is not enough protective layer covering it, it will easily cause the problem of reduced yield rate of antistatic test of the display panel.

[0046] In order to solve the problems in the prior art, an embodiment of the present invention provides a display module. The display module includes: a display panel, including a display area and a non-display area surrounding at least one side of the display area, a line-changing portion and a bending portion are provided in the non-display area, the bending portion is provided on the side of the line-changing portion away from the display area, and the line-changing portion is provided with a line-changing hole; a polarizer, located on the first side of the display panel; the polarizer includes a flat portion and a recessed portion; the polarizer overlaps with at least part of the line-changing hole; a sealing layer, provided in the non-display area, the sealing layer and the polarizer are located on the same side of the display panel, and the sealing layer overlaps with the recessed portion at least partially. In the present technical scheme, a flat portion and a recessed portion are provided on the polarizer, so that the sealing layer and the recessed portion at least partially overlap, and the recessed portion is used to improve the overflow boundary of the sealing layer, thereby increasing the difficulty of overflow of the sealing layer, thereby making the height of the sealing layer overflowing into the recessed portion of the polarizer not higher than the height of the polarizer. The reduction in the height of the sealing layer near the recessed portion is beneficial to improving the fit of the optical adhesive layer to the polarizer, making it less likely for bubbles to be generated between the optical adhesive layer and the polarizer, thereby improving the appearance yield of the display module; and the polarizer overlaps with at least part of the line switching hole, while the recessed portion of the polarizer overlaps with part of the sealing layer, so that the line switching hole portion can be protected by the polarizer and / or the sealing layer, thereby providing good electrostatic protection for the line switching hole portion, thereby improving the anti-static ability of the display module.

[0047] The display module of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments shown are not intended to limit the protection scope of the present invention. Figure 4 A schematic diagram showing a display module provided by an embodiment of the present invention without an optical adhesive layer and a cover plate attached thereto; Figure 5 A schematic plan view of a display module provided by an embodiment of the present invention is shown; Figure 6 A schematic diagram showing a display module provided by an embodiment of the present invention attached with an optical adhesive layer and a cover plate.

[0048] Specifically, Figures 4 to 6 As shown, the display module 100 includes:

[0049] The display panel 10 includes a display area AA and a non-display area NA surrounding at least one side of the display area AA. The non-display area NA is provided with a line-changing portion NA1 and a bending portion NA2. The bending portion NA2 is provided on a side of the line-changing portion NA1 away from the display area AA. The line-changing portion NA1 is provided with a line-changing hole 11.

[0050] The polarizer 20 is located at the first side of the display panel 10; the polarizer 20 includes a flat portion 21 and a recessed portion 22; the polarizer 20 partially overlaps with the line-changing hole 11;

[0051] The sealing layer 30 is disposed in the non-display area NA. The sealing layer 30 and the polarizer 20 are located on the same side of the display panel 10 . The sealing layer 30 and the recessed portion 22 are partially overlapped.

[0052] By setting a recessed portion 22 on the polarizer 20, the recessed portion 22 is used to block the overflow boundary of the sealing layer 30, thereby increasing the difficulty of overflow of the sealing layer 30, and thereby making the height of the sealing layer 30 overflowing into the recessed portion 22 of the polarizer 20 not higher than the height of the polarizer 20. The height reduction of the sealing layer 30 near the recessed portion 22 is beneficial to improving the fit between the optical adhesive layer and the polarizer 20 in subsequent steps, making it difficult for bubbles to be generated between the optical adhesive layer and the polarizer 20, thereby improving the appearance yield of the display module; and the polarizer 20 overlaps with the line switching hole 11, while the polarizer 20 partially overlaps with the sealing layer 30, so that the position of the line switching hole 11 can be protected by the polarizer 20 and / or the sealing layer 30, thereby improving the antistatic ability of the display module.

[0053] In some embodiments, the display panel 10 includes any one of a plasma display panel (PDP), a vacuum fluorescent display (VFD), a field emission display (FED), an electroluminescent display (LED), an organic light-emitting diode display (OLED), a liquid crystal display (LCD), and an electronic ink (EL) display.

[0054] Exemplarily, in some embodiments, the display panel 10 includes a substrate, a driving circuit layer on the substrate, a light-emitting function layer on the driving circuit layer, an encapsulation layer on the light-emitting function layer, and a touch layer on the encapsulation layer. The substrate in this embodiment is a flexible substrate, and the bending portion of the flexible substrate can be bent to its back. The light-emitting function layer is configured to form a plurality of light-emitting devices for displaying images, and the light-emitting devices are arranged in the display area AA; the driving circuit layer is configured to form a plurality of pixel driving circuits, and the driving circuit layer is connected to an external circuit, and the external circuit is arranged in the non-display area NA. Each pixel driving circuit is electrically connected to a light-emitting device in a one-to-one correspondence, and the external circuit is used to provide a signal to control the light-emitting display to the driving circuit layer, and then the driving circuit controls the light-emitting display of the light-emitting device. The external circuit can be a control chip or a flexible circuit board, etc.

[0055] It should be noted that the layer structure of the display panel 10 is not limited to the structural form of the above example. Under the condition of meeting the display requirements, the display panel 10 can also adopt other layer structures.

[0056] Furthermore, if Figure 4 and Figure 5 As shown, there is a spacing distance between the flat portion 21 of the polarizer 20 and the sealing layer 30. That is, the sealing layer 30 only covers part of the concave portion 22 of the polarizer 20, and the height of the sealing layer 30 is not higher than the height of the polarizer 20.

[0057] The polarizer 20 selectively allows light waves vibrating in a specific direction to pass through, while blocking light waves vibrating in other directions. This can improve the contrast of the image displayed by the display panel 10, and can also filter out the reflection of some light, thereby reducing the surface brightness of the display panel 10, reducing glare and reflection, and improving image display quality.

[0058] Further, in some embodiments, in a direction perpendicular to the plane of the display module 100, the spacing distance d1 between the flat portion 21 and the sealing layer 30 is 0.02 mm to 0.05 mm. For example, the spacing distance d1 may be 0.025 mm, 0.03 mm, 0.035 mm, or 0.04 mm, but is not limited thereto.

[0059] Furthermore, in some other embodiments, there is no spacing between the flat portion 21 of the polarizer 20 and the sealing layer 30. That is, the sealing layer 30 covers the entire recessed portion 22 of the polarizer 20, but the height of the sealing layer 30 is not higher than the height of the polarizer 20.

[0060] Furthermore, if Figure 1As shown, in this embodiment, the sealing layer 30 overlaps with at least a portion of the line switching hole 11, and the sealing layer 30 covers the line switching hole 11, which can provide good insulation protection for the line switching hole 11 and improve the anti-static ability of the display module.

[0061] The pixel driving circuit includes a transistor and a storage capacitor, and the driving circuit layer includes a gate functional layer formed on the transistor, a source and drain functional layer, a plate layer of the storage capacitor, and a signal line for transmitting signals to the gate and source and drain of the transistor. Figure 5 As shown, the signal line for transmitting the signal of the gate and source and drain of the transistor is the first signal line 12, and the first signal line 12 extends from the display area AA to the non-display area NA. The non-display area NA is provided with a second signal line 13 connected to the external circuit, and the second signal line 13 is used to transmit the signal sent by the external circuit to the first signal line 12. When the first signal line 12 and the second signal line 13 are not arranged in the same layer, it is necessary to set a line change hole 11 so that the first signal line 12 and the second signal line 13 are electrically connected, so that the first signal line 12 can receive the signal transmitted by the external circuit. However, static electricity is easily transmitted between the two signal lines through the line change hole 11. If the line change hole 11 is not protected, the display panel 10 may fail in severe cases. In order to improve the reliability of the display panel, it is necessary to set a protective layer to cover the line change hole 11. In this embodiment, the polarizer 20 and the sealing layer 30 are both covered on the line change hole 11, which can improve the insulation at the line change hole 11, so that the antistatic ability of the display panel 10 can be improved, and the reliability of the display panel 10 can be improved.

[0062] In some other embodiments, the touch wiring extending from the display area AA to the non-display area NA is connected to the touch signal transmission line located in the non-display area NA through the wiring hole 11 .

[0063] Furthermore, if Figure 4 and Figure 6 As shown, the display module 100 further includes a first back plate 41 , which is disposed on the second side of the display panel 10 and at least partially covers the line switching hole 11 . The first back plate 41 covers the line switching hole 11 , which can improve the antistatic capability of the display panel 10 .

[0064] Furthermore, if Figure 4 As shown, the distance d2 between the edge of the recessed portion 22 close to the non-display area NA and the edge of the first back plate 41 close to the non-display area NA is less than 0.07 mm, so that the recessed portion 22 can cover part of the line-changing hole 11, thereby improving the insulation protection of the line-changing hole 11.

[0065] Furthermore, if Figure 4As shown, the recessed portion 22 in this embodiment is an L-shaped groove, and the setting of the L-shaped groove can block the flow speed of the sealing layer 30, and can control the flow distance of the sealing layer 30, so that the controllability of the distance between the sealing layer 30 and the flat portion 21 of the polarizer 20 is improved, and the height of the sealing layer 30 is reduced. In another embodiment, the recessed portion 22 can also be a U-shaped groove, but is not limited thereto. Those skilled in the art can also set the recessed portion 22 to a groove of other shapes according to actual needs.

[0066] Furthermore, in some embodiments, a blocking structure is provided in the recessed portion 22, and the blocking structure is, for example, a protruding column, and the protruding column is, for example, a cylindrical column, a square column, a curved line protruding column, etc. The setting of the blocking structure is used to reduce the flow speed and flow distance of the sealing layer 30, and reduce the height of the sealing layer 30 flowing into the recessed portion 22, so that the height of the portion of the sealing layer 30 is lower than the height of the polarizer 20.

[0067] Furthermore, if Figure 4 As shown, the height d3 of the recessed portion 22 is 10 μm to 50 μm. Reasonable setting of the height of the recessed portion 22 can not only have a good overflow blocking effect on the sealing layer 30 , but also allow the sealing layer 30 to overlap with at least a portion of the polarizer 20 .

[0068] Furthermore, if Figure 4 and Figure 6 As shown, the display module 100 further includes a second back plate 42, which is disposed on the second side of the display panel 10 and at least corresponds to the bending portion NA2. A gap is provided between the first back plate 41 and the second back plate 42. When the bending portion NA2 of the display panel 10 is bent, the second back plate 42 is bent along the bending portion NA2 to the back of the display panel 10, opposite to the first back plate 41.

[0069] Furthermore, when the second back plate 42 is bent to the back of the display panel 10, a supporting glue may be provided at the gap between the first back plate 41 and the second back plate 42. By filling the gap with supporting glue, the supporting glue provides a supporting force to the gap of the display panel 10, thereby reducing the deformation of the bent portion of the display panel 10 caused by the bending.

[0070] Furthermore, if Figure 6 As shown, an optical adhesive layer 60 is disposed on the side of the polarizer 20 away from the display panel 10 , and a cover plate 70 is disposed on the side of the optical adhesive layer 60 away from the back plate.

[0071] Optical adhesive is colorless and transparent, has good bonding strength, can be cured at room temperature or medium temperature, has small curing shrinkage, etc. For example, the optical adhesive can be a natural resin optical adhesive or a synthetic resin optical adhesive.

[0072] The cover plate 70 is disposed on the surface of the polarizer 20 through the optical adhesive layer 60 to protect the upper surface of the display panel 10. Exemplarily, the material of the cover plate 70 can be a glass cover plate, a polyimide cover plate, or a polymethyl methacrylate cover plate.

[0073] Furthermore, an ink layer 80 is provided on one side of the cover plate 70 facing the optical adhesive layer 60, and the outer edge of the ink layer 80 is aligned with the edge of the cover plate 70, and the outer edge of the ink layer 80 is located inside the edge of the polarizer 20. By arranging the ink layer 80 on the edge of the cover plate 70, it is possible to prevent light from leaking out of the side of the display panel 10, thereby avoiding interference with the display area AA of the display panel 10.

[0074] An embodiment of the present invention further provides a display device, comprising the display module as described above. Figure 7 A schematic diagram of a display device provided by an embodiment of the present invention is shown. Figure 7 As shown, the display device 1000 includes the above-mentioned display module 100, so the display device 1000 can obtain all the technical effects of the display module 100, which is conducive to improving the adhesion of the optical adhesive layer to the polarizer, making it difficult to generate bubbles between the optical adhesive layer and the polarizer, improving the appearance yield of the display module, and providing good electrostatic protection for the wire exchange hole part, improving the antistatic ability of the display module. Specifically, the display device 1000 can be any device that displays images, whether moving (for example, video) or fixed (for example, still images), and whether text or images. More specifically, it is expected that the embodiments can be implemented in or associated with a variety of electronic devices. The various electronic devices are, for example (but not limited to), mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, video cameras, game consoles, watches, clocks, calculators, TV monitors, flat panel displays, computer monitors, car displays, electronic photos, electronic billboards or signs, projectors, building structures, packaging and aesthetic structures, etc.

[0075] In summary, the display module and display device provided by the present invention have the following advantages:

[0076] By arranging a flat portion and a recessed portion on the polarizer, the sealing layer and the recessed portion at least partially overlap, and the recessed portion is used to improve the overflow boundary of the sealing layer, increase the difficulty of overflow of the sealing layer, and thereby make the height of the sealing layer overflowing into the recessed portion of the polarizer not higher than the height of the polarizer. The reduction in the height of the sealing layer near the recessed portion is beneficial to improving the fit of the optical adhesive layer to the polarizer, making it difficult for bubbles to be generated between the optical adhesive layer and the polarizer, thereby improving the appearance yield of the display module; and the polarizer overlaps with at least part of the line switching hole, and the recessed portion of the polarizer overlaps with part of the sealing layer, so that the line switching hole portion can be protected by the polarizer and / or the sealing layer, providing good electrostatic protection for the line switching hole portion, and improving the anti-static ability of the display module.

[0077] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A display module, characterized in that: include: The display panel comprises a display area and a non-display area surrounding at least one side of the display area, wherein a line-changing portion and a bending portion are provided in the non-display area, the bending portion is provided on a side of the line-changing portion away from the display area, and the line-changing portion is provided with a line-changing hole; A polarizer, located on a first side of the display panel; the polarizer comprises a flat portion and a concave portion; the polarizer overlaps at least a portion of the line-changing hole; The sealing layer is disposed in the non-display area. The sealing layer and the polarizer are located on the same side of the display panel, and the sealing layer and the recessed portion at least partially overlap.

2. The display module according to claim 1, characterized in that: A spacing distance is arranged between the flat portion of the polarizer and the sealing layer.

3. The display module according to claim 2, characterized in that: In a direction perpendicular to the plane where the display module is located, the spacing distance between the flat portion and the sealing layer is 0.02 mm to 0.05 mm.

4. The display module according to claim 1, characterized in that: There is no spacing distance between the flat portion of the polarizer and the sealing layer.

5. The display module according to claim 1, characterized in that: The sealing glue layer overlaps with at least a portion of the line-changing hole.

6. The display module according to claim 1, characterized in that: It also includes a first back plate, which is arranged on the second side of the display panel and at least a part of its structure covers the line-changing hole.

7. The display module according to claim 6, characterized in that: A distance between an edge of the recessed portion close to the non-display area and an edge of the first back plate close to the non-display area is less than 0.07 mm.

8. The display module according to claim 1, characterized in that: The recessed portion is an L-shaped groove or a U-shaped groove.

9. The display module according to claim 1, characterized in that: The height of the recessed portion is 10 μm to 50 μm.

10. The display module according to claim 6, characterized in that: It also includes a second back plate, which is arranged on the second side of the display panel and at least corresponds to the bending portion.

11. The display module according to claim 10, characterized in that: A buffer layer is further provided between the first back plate and the second back plate.

12. The display module according to claim 1, characterized in that: An optical adhesive layer and a cover plate are sequentially stacked on a side of the polarizer away from the display panel.

13. A display device, characterized in that: Comprising a display module as described in any one of claims 1 to 12.

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