Display module and display apparatus

Abstract

The present application provides a display module and a display apparatus. A first blind hole is formed in a support layer to connect a through hole to the outside, so as to ameliorate the problem of a collapse defect of a cover plate layer at the position of the through hole. Moreover, bosses are provided in the first blind hole to prevent reduction of the impact resistance of the display module and prevent weakening of the communication performance of the first blind hole caused by a protective film adhesive of the support layer filling the first blind hole, thereby ameliorating the problem of the collapse defect of the cover plate layer without affecting the impact resistance of the module.

Description

Display modules and display devices Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display module and a display device. Background Technology

[0002] The display module undergoes multiple bonding processes from a single display layer to the final product, and each bonding process usually requires a degassing process to ensure the bonding effect. However, after the support layer is bonded, a cavity will be formed in the front camera hole of the module. At this time, if pressure degassing is performed, the cover plate layer in the front camera hole area will collapse poorly because the pressure inside the front camera hole is lower than the pressure in the degassing machine. Invention Overview

[0003] This application provides a display module and a display device to alleviate the technical problem of cover plate collapse and lack of brightness in the existing display module bonding process.

[0004] The technical solution provided in this application is as follows:

[0005] In a first aspect, embodiments of this application provide a display module, which includes:

[0006] Display panel;

[0007] A cover plate layer is disposed on the light-emitting side of the display panel;

[0008] A support layer is disposed on the side of the display panel opposite to the cover layer, and the support layer has a through hole that penetrates the support layer and the display panel.

[0009] The support layer further includes at least one first blind hole, the extension direction of which is different from that of the through hole. The through hole communicates with the outside through the first blind hole, and the support layer includes a plurality of protrusions disposed in the first blind hole.

[0010] Secondly, embodiments of this application also provide a display device, which includes the display module described in the foregoing embodiments. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments or prior art, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 is a schematic diagram of a comparison display module provided in an embodiment of this application.

[0013] Figure 2 is a schematic diagram of another comparison display module provided in an embodiment of this application.

[0014] Figure 3 is a schematic diagram of a planar structure of a display module provided in an embodiment of this application.

[0015] Figure 4 is a schematic diagram of a partial cross-sectional structure of the module shown in Figure 3.

[0016] Figure 5 is a schematic diagram of the structure after the protective film in Figure 4 has been removed.

[0017] Figure 6 is a schematic diagram of a partial planar structure of the support layer in Figure 5.

[0018] Figure 7 is a schematic diagram showing some details of the structure of the first blind hole in Figure 6.

[0019] Figure 8 is a schematic diagram of the cross-section and longitudinal section of the boss provided in the embodiment of this application.

[0020] Figure 9 is a schematic diagram comparing the impact resistance of the module shown in Figure 4 with that of the module shown in Figure 2.

[0021] Figure 10 is a schematic diagram of another partial planar structure of the support layer provided in an embodiment of this application.

[0022] Figure 11 is a schematic diagram of another partial planar structure of the support layer provided in the embodiment of this application.

[0023] Figure 12 is a schematic diagram of another partial planar structure of the support layer provided in an embodiment of this application. Embodiments of the present invention

[0024] The following descriptions of the embodiments are based on the accompanying illustrations, illustrating specific embodiments in which this application can be implemented. Directional terms used in this application, such as [up], [down], [front], [back], [left], [right], [inner], [outer], [side], etc., are merely for reference to the accompanying drawings. Therefore, the directional terms used are for illustration and understanding of this application, and not for limiting this application. In the figures, structurally similar units are denoted by the same reference numerals. In the figures, the thickness of some layers and regions is exaggerated for clarity and ease of description. That is, the dimensions and thicknesses of each component shown in the figures are arbitrarily shown, but this application is not limited thereto.

[0025] Referring to Figure 1, which is a schematic diagram of a contrast display module 100' provided in an embodiment of this application, the display module 100' includes a display panel 10' and a cover layer 20' and a support layer 30' located on opposite sides of the display panel 10'. The cover layer 20' is located on the light-emitting side of the display panel 10', and the support layer 30' is located on the side of the display panel 10' away from the cover layer 20'. Optionally, the display module 100' further includes a polarizer 40' located between the cover layer 20' and the display panel 10', and a back plate 50' and a buffer layer 60' located between the support layer 30' and the display panel 10', with the buffer layer 60' located between the back plate 50' and the support layer 30'. The polarizer 40' is bonded to the display panel 10' via an adhesive layer 70'.

[0026] The display module 100' undergoes multiple bonding processes from the display panel 10' to the final product, and each bonding process typically requires a degassing process to ensure bonding effectiveness. During the bonding process of the display module 100', a protective film 80' is attached to the support layer 30' to protect it. The protective film 80' is bonded to the display panel 10' along with the support layer 30' and is removed during the final assembly process. However, after the support layer 30' is bonded, a cavity is formed between the protective film 80' and the cover layer 20' in the front camera hole 301' of the display module 100'. At this point, pressure degassing can cause a collapse 21' in the cover layer 20' at the position corresponding to the front camera hole 301' because the pressure inside the front camera hole 301' is lower than the pressure in the degassing machine, resulting in a poor collapse.

[0027] Therefore, the inventors of this application discovered in their research that, referring to Figure 2, which is a schematic diagram of another comparative display module 100' provided in the embodiment of this application, in order to improve the problem of poor collapse of the cover layer 20' at the position of the front camera hole 301', an exhaust groove 801' can be opened on the protective film 80' of the support layer 30'. The exhaust groove 801' is set corresponding to the front camera hole 301' and communicates with the front camera hole 301', so that the front camera hole 301' communicates with the outside through the exhaust groove 801', thereby making the air pressure in the front camera hole 301' consistent with the air pressure in the degassing machine, and avoiding poor collapse of the cover layer 20' at the position of the front camera hole 301'. However, the venting groove 801' may open in the degassing machine, allowing foreign objects to enter the front camera hole 301'; in addition, when the die-cutting protective film 80' forms the venting groove 801', debris from the protective film 80' may adhere to the edge of the venting groove 801' and fall into the front camera hole 301' during the module manufacturing process, resulting in poor product appearance.

[0028] In view of this, the inventors of this application, through further in-depth research, propose a display module and display device to solve the above problems.

[0029] Please refer to Figures 3 to 9. Figure 3 is a schematic diagram of a planar structure of the display module provided in the embodiment of this application. Figure 4 is a schematic diagram of a partial cross-sectional structure of the display module in Figure 3. Figure 5 is a schematic diagram of the structure after the protective film is removed in Figure 4. Figure 6 is a schematic diagram of a partial planar structure of the support layer in Figure 5. Figure 7 is a schematic diagram of a partial detailed structure of the first blind hole in Figure 6. Figure 8 is a schematic diagram of the cross-section and longitudinal section of the boss provided in the embodiment of this application. Figure 9 is a schematic diagram comparing the impact resistance of the display module in Figure 4 and the display module in Figure 2.

[0030] Referring to Figures 3 and 4, the display module 100 includes a display panel 10, a cover layer 20, and a support layer 30. The cover layer 20 is disposed on the light-emitting side of the display panel 10, which refers to the side of the display panel 10 used for displaying images. The display panel 10 includes a light-emitting diode (LED) display panel, a micro light-emitting diode (Micro-LED) display panel, or a mini light-emitting diode (Mini-LED) display panel, etc. Optionally, the display panel 10 is a flexible display panel to achieve bending, folding, rolling, etc.

[0031] The support layer 30 is disposed on the side of the display panel 10 opposite to the cover layer 20. The support layer 30 has a through hole 301, which penetrates the support layer 30 and the display panel 10, but does not extend to the cover layer 20. The through hole 301 provides a light-transmitting path for functional components such as cameras to achieve functions such as image capture. This embodiment uses the image capture function as an example. The camera is positioned corresponding to the through hole 301, allowing external light to reach the camera's photosensitive element through the through hole 301, thereby improving the camera's imaging effect.

[0032] Optionally, the cover layer 20 may include at least one of transparent substrates such as glass, ultra-thin glass, PET, and PI. For example, when the display module 100 is a flexible display module 100, the cover layer 20 may be formed by a three-layer structure of ultra-thin glass, PET, and PI, wherein the ultra-thin glass is located between the PET layer and the PI layer. The support layer 30 may be a layer formed of stainless steel, titanium alloy, etc.

[0033] The display module 100 further includes a polarizer 40, a backplate 50, and a buffer layer 60. The polarizer 40 is disposed between the cover plate layer 20 and the display panel 10. The backplate 50 is disposed between the display panel 10 and the support layer 30. The buffer layer 60 is disposed between the backplate 50 and the support layer 30. The polarizer 40 can be bonded to the display panel 10 via an adhesive layer 70. The through-hole 301 also penetrates the buffer layer 60, the backplate 50, the adhesive layer 70, and the polarizer 40. The backplate 50 is made of materials such as PET, the buffer layer 60 is made of materials such as foam and PI, and the adhesive layer 70 is made of materials such as OCA transparent optical adhesive.

[0034] The support layer 30 also has at least one first blind hole 302, through which the through hole 301 communicates with the outside. The extension direction of the first blind hole 302 is different from that of the through hole 301. For example, the through hole 301 extends along the thickness direction Z of the display module 100, while the first blind hole 302 extends along a first direction X. That is, the first direction X is the extension direction of the first blind hole 302, for example, the length direction of the first blind hole 302. The first direction X is perpendicular to the thickness direction Z of the display module 100, which is also the stacking direction of the layers on the display module 100. The first blind hole 302 is adjacent to the through hole 301, that is, the orthographic projection of the first blind hole 302 on the cover layer 20 is adjacent to the orthographic projection of the through hole 301 on the cover layer 20, but there is no overlapping area.

[0035] In this embodiment, the through hole 301 on the support layer 30 communicates with the outside through the first blind hole 302. This allows the display module 100 to communicate with the external degassing machine environment after the support layer 30 is bonded during the module bonding process. This ensures that the air pressure inside the through hole 301 is consistent with the air pressure inside the degassing machine, preventing the cover plate layer 20 from collapsing poorly at the position of the through hole 301. Furthermore, by setting the first blind hole 302 on the support layer 30, it is not necessary to open an exhaust groove on the protective film 80 of the support layer 30. This avoids foreign objects from entering the through hole 301 and causing poor product appearance due to the exhaust groove on the protective film 80.

[0036] It should be noted that when the support layer 30 is bonded during the module bonding process of the display module 100, a protective film 80 is provided on the support layer 30. The protective film 80 is bonded to the display panel 10 along with the support layer 30 to protect the support layer 30. The protective film 80 exists during the module manufacturing stage of the display module 100. When the display module 100 enters the final assembly stage, the protective film 80 is removed during the final assembly process. After the protective film 80 is removed from the display module 100, it looks like Figure 5. That is, after the display module 100 of this application is applied to a display device, the display module 100 does not include the protective film 80.

[0037] Referring again to Figure 4, the support layer 30 includes an upper surface 32 and a lower surface 33 opposite to each other, and a side surface 34 connecting the upper surface 32 and the lower surface 33. The upper surface 32 is close to the display panel 10. The first blind hole 302 forms a first opening 3022 on the side surface 34, and a second opening 3021 is formed on the side close to the through hole 301. The second opening 3021 communicates with the through hole 301, and the second opening 3021 communicates with the first opening 3022.

[0038] In one embodiment, the first blind hole 302 is formed on the lower surface 33 of the support layer 30 to reduce the manufacturing difficulty of the first blind hole 302 while maintaining the support performance of the support layer 30. Of course, in other embodiments, the first blind hole 302 may also be formed inside the support layer 30, or the first blind hole 302 may also be formed on the upper surface 32 of the support layer 30. This application embodiment uses the example of the first blind hole 302 being formed on the lower surface 33 of the support layer 30 for illustration.

[0039] Referring to Figure 5, to further reduce the impact of the first blind hole 302 on the support layer 30 on the support performance of the support layer 30 and to prevent a decrease in the impact resistance of the display module 100, the ratio of the depth H1 of the first blind hole 302 to the thickness H2 of the support layer 30 in this application ranges from 1 / 4 to 2 / 3. For example, the depth H1 of the first blind hole 302 is equal to half the thickness H2 of the support layer 30. The thickness H2 of the support layer 30 ranges from 0.1 mm to 0.15 mm, such as 0.1 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, etc. Furthermore, both the thickness H2 of the support layer 30 and the depth H1 of the first blind hole 302 refer to the distance in the thickness direction Z of the display module 100.

[0040] Referring to Figures 4, 5, and 6, the distance of the first blind hole 302 in the first direction X is defined as the length L1 of the first blind hole 302, and the distance of the first blind hole 302 in the second direction Y is defined as the width W1 of the first blind hole 302. That is, the first direction X is the length direction of the first blind hole 302, and the second direction Y is the width direction of the first blind hole 302. The first direction X and the second direction Y are perpendicular, and both the first direction X and the second direction Y are perpendicular to the thickness direction Z of the display module 100. In other words, both the first direction X and the second direction Y are parallel to the horizontal plane where the support layer 30 is located. The first blind hole 302 extends along the first direction X; therefore, the first direction X is the extension direction of the first blind hole 302.

[0041] The first blind hole 302 is elongated, for example, its cross-sectional shape is rectangular. The length L1 of the first blind hole 302 is equal to the distance between the first opening 3022 and the second opening 3021. The minimum distance between the first opening 3022 and the second opening 3021 is equal to the minimum distance Dm between the through hole 301 and the boundary 300 of the support layer 30. At this point, the length L1 of the first blind hole 302 is at its minimum. Thus, by setting a smaller length for the first blind hole 302, the through hole 301 can be connected to the outside, improving the problem of poor collapse of the cover layer 20 at the through hole 301. Moreover, setting a smaller length for the first blind hole 302 can further reduce the impact on the support performance of the support layer 30 and prevent the impact resistance of the display module 100 from decreasing. The minimum distance Dm between the through hole 301 and the boundary 300 of the support layer 30 is also the minimum vertical distance between the through hole 301 and the side 34 of the support layer 30.

[0042] The width W1 of the second opening 3021 is 15% to 25% of the diameter of the through hole 301, for example, 15%, 16%, 17%, 18%, 19%, 20%, 22%, 23%, 25%, etc., to achieve communication between the through hole 301 and the outside while reducing the impact of the first blind hole 302 on the support performance of the support layer 30. The width of the second opening 3021 ranges from 0.5 mm to 0.75 mm, for example, 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, etc. The width W1 of the first opening 3022 can be equal to the width W2 of the second opening 3021, and the width W1 of the first blind hole 302 can be characterized by the width W1 of the first opening 3022 or the width W1 of the second opening 3021.

[0043] Referring to Figures 6 and 7, the support layer 30 includes a plurality of protrusions 31 disposed within the first blind hole 302. The protrusions 31 are used to further prevent the display module 100 from being reduced in impact resistance and to prevent the protective film 80 of the support layer 30 from filling the first blind hole 302 and weakening the connectivity of the first blind hole 302, thereby improving the problem of poor collapse of the cover plate layer 20 without affecting the impact resistance of the module.

[0044] There is a first gap D1 between two adjacent bosses 31, and the adjacent first gaps D1 at least partially overlap in the extending direction of the first blind hole 302; there is a second gap D2 between a portion of the bosses 31 and the sidewall of the first blind hole 302, and the adjacent second gaps D2 at least partially overlap in the extending direction of the first blind hole 302. Specifically, in the second direction Y, that is, in the width direction of the first blind hole 302, there is a first gap D1 between two adjacent bosses 31, and a second gap D2 between a portion of the bosses 31 and the sidewall of the first blind hole 302; in the first direction X, that is, in the length direction of the first blind hole 302, there is a third gap D3 between two adjacent bosses 31, the first gap D1 being equal to the second gap D2, and the second gap D2 being equal to the third gap D3, so that the plurality of bosses 31 are evenly distributed in the first blind hole 302, so as to better prevent the impact resistance of the display module 100 from being reduced and to prevent the protective film 80 of the support layer 30 from filling the first blind hole 302 and weakening the connectivity of the first blind hole 302. In the direction perpendicular to the extension direction of the first blind hole 302, that is, in the width direction of the first blind hole 302, the length of the first gap D1 is equal to the length of the second gap D2. The length of the first gap D1 is 1 / 10 to 1 / 5 of the width of the first blind hole 302. This avoids affecting the venting performance of the first blind hole 302 due to the first gap D1 and the second gap D2 being too small, while also avoiding affecting the support performance of the support layer 30 due to the first gap D1 and the second gap D2 being too large. Optionally, the size of the first gap D1 is 0.1 mm to 0.15 mm; the size of the second gap D2 is 0.1 mm to 0.15 mm; and the size of the third gap D3 is 0.1 mm to 0.15 mm.

[0045] Multiple protrusions 31 are arranged sequentially at intervals along the length and width of the first blind hole 302. For example, multiple protrusions 31 may overlap along the length and width of the first blind hole 302, such that they are arranged in a straight line along both the length and width of the first blind hole 302. Alternatively, in other embodiments, only one protrusion 31 may be provided along the width of the first blind hole 302, in which case the multiple protrusions 31 within the first blind hole 302 are arranged in a row along the length of the first blind hole 302. Furthermore, along the extension direction of the first blind hole 302, the multiple protrusions 31 may also be arranged in at least one of a Z-shape, an S-shape, or an X-shape.

[0046] Referring again to Figure 7, the length L2 of each protrusion 31 in the first direction X is equal to the third gap D3, and the width W2 of each protrusion 31 in the second direction Y is equal to the first gap D1. This is to reasonably set the distribution density of the protrusions 31 within the first blind hole 302, so as to better prevent the impact resistance of the display module 100 from being reduced and to prevent the protective film 80 of the support layer 30 from filling the first blind hole 302 and weakening its connectivity. Optionally, the total area of ​​all the protrusions 31 within the first blind hole 302 accounts for 1 / 5 to 1 / 3 of the area of ​​the first blind hole 302, such as 1 / 5, 1 / 4, 1 / 3, etc.

[0047] Referring to Figure 8, in the thickness direction Z of the display module 100, the height H3 of the boss 31 is equal to the depth H1 of the first blind hole 302, so that the boss 31 can support the protective film 80 and prevent the protective film 80 from filling the first blind hole 302 and weakening the connectivity of the first blind hole 302. The cross-sectional shape of the protrusion 31 includes circles, triangles, polygons, etc. For example, the cross-sectional shape of the protrusion 31 shown in Figure 8(a) is circular, the cross-sectional shape of the protrusion 31 shown in Figure 8(b) is triangular, the cross-sectional shape of the protrusion 31 shown in Figure 8(c) is square, and the cross-sectional shape of the protrusion 31 shown in Figure 8(d) is hexagonal. The longitudinal cross-sectional shape of the protrusion 31 includes triangles, trapezoids, rectangles, etc. For example, the longitudinal cross-sectional shape of the protrusion 31 shown in Figure 8(e) is rectangular, the longitudinal cross-sectional shape of the protrusion 31 shown in Figure 8(f) is trapezoidal, and the longitudinal cross-sectional shape of the protrusion 31 shown in Figure 8(g) is triangular.

[0048] The first blind hole 302 with the protrusion 31 can be formed simultaneously by a semi-etching process. The protrusion 31 includes a top 311 and a bottom 312. The top 311 is located on the side of the bottom 312 away from the display panel 10, and the area of ​​the top 311 is smaller than the area of ​​the bottom 312.

[0049] In one embodiment, referring to Figures 3, 4, and 5, the display module 100100 further includes a bending region BA and a non-bending region NA located on at least one side of the bending region BA. The display module 100 can perform bending and folding functions in the bending region BA. The through hole 301 and the first blind hole 302 are both located in the non-bending region NA. The lower surface 33 of the support layer 30 also forms at least one second blind hole 305, which is located in the bending region BA. For example, referring to Figure 3, this embodiment illustrates an example where the bending region BA is located between two non-bending regions. The non-bending region NA includes a full-etched region FEA and a half-etched region PEA located on at least one side of the full-etched region FEA. This embodiment illustrates an example where the full-etched region FEA is located between two half-etched regions PEA, and the second blind hole 305 is located in the half-etched region PEA. The second blind hole 305 extends parallel to the bending axis of the display module 100, that is, the extension direction of the second blind hole 305 is the same as the bending axis of the display module 100. The extension direction of the first blind hole 302 is different from that of the second blind hole 305, for example, the extension direction of the first blind hole 302 is perpendicular to that of the second blind hole 305, so as to reduce the impact of the first blind hole 302 on the support performance of the support layer 30 near the through hole 301.

[0050] Referring to Figure 4, the depth of the second blind via 305 is equal to the depth of the first blind via 302, such that the first blind via 302 and the second blind via 305 can be formed using the same semi-etching process. The support layer 30 forms a stress relief portion 306 in the fully etched area FEA, and the stress relief portion 306 includes a plurality of perforated patterns penetrating the support layer 30. The stress relief portion 306 and the second blind via 305 are used to release the bending stress in the bending area BA.

[0051] Referring to Figure 9, stress simulation is used to compare the risk of film failure on the display panel 10 array layer under the impact of a falling ball, a falling pen, and a sharp tip on the display module 100 in the example of Figure 4 and the display module 100' in the example of Figure 2. In Figure 9, the bar chart on the left of each test item is the film failure risk data of the existing solution design, that is, the film failure risk data of the display module 100' in the example of Figure 2. The bar chart on the right of each test item is the film failure risk data of the proposed solution design, that is, the film failure risk data of the display module 100 in the example of Figure 4. As shown in Figure 9, during the ball drop test, the risk of film failure of the display module 100 in Figure 4 is lower than that of the display module 100' in Figure 2. However, during the pen drop and tip impact tests, the risk of film failure of the display module 100 in Figure 4 is slightly higher than that of the display module 100' in Figure 2. By comparing the film failure risk data of the display module 100 in Figure 4 and the display module 100' in Figure 2 under ball drop, pen drop, and tip impact tests, it can be seen that by providing the first blind hole 302 with the protrusion 31 on the support layer 30, the problem of poor collapse of the cover layer 20 can be improved without affecting the impact resistance performance of the module.

[0052] In one embodiment, referring to Figure 10, which is a schematic diagram of another partial planar structure of the support layer 30 provided in this application embodiment, the difference from the support layer 30 exemplified in Figure 6 is that each first blind hole 302 includes a main first blind hole 303 and at least one sub-first blind hole 304, wherein the sub-first blind hole 304 communicates with the main first blind hole 303. Optionally, the number of sub-first blind holes 304 is two, and the two sub-first blind holes 304 are located on both sides of the main first blind hole 303 and are symmetrical about the main first blind hole 303, so as to improve the reliability of the through hole 301 communicating with the outside world, while reducing the impact on the impact resistance of the display module 100. Other descriptions are as described in the above embodiments and will not be repeated here.

[0053] In one embodiment, referring to FIG11, FIG11 is a schematic diagram of another partial planar structure of the support layer 30 provided in the embodiment of the present application. The difference from the support layer 30 exemplified in FIG6 is that the number of the first blind holes 302 is two, and the two first blind holes 302-1 and 302-2 extend in the same direction. Other descriptions are as described in the above embodiments and will not be repeated here.

[0054] In one embodiment, referring to Figure 12, which is a schematic diagram of another partial planar structure of the support layer 30 provided in this application embodiment, the difference from the support layer 30 exemplified in Figure 6 is that the number of the first blind holes 302 is two, and the two first blind holes 302 are arranged in a V-shape. Of course, in some other embodiments, the two first blind holes 302 may also be arranged in other shapes such as an X-shape. Other descriptions are provided in the above embodiments and will not be repeated here.

[0055] Based on the same inventive concept, this application also provides a display device, which includes the display module 100 described in one of the foregoing embodiments. The display device can be an electronic display device such as a mobile phone, tablet, or television.

[0056] As can be seen from the above embodiments:

[0057] This application provides a display module and display device. The display module includes a display panel, a cover layer disposed on the light-emitting side of the display panel, and a support layer disposed on the side of the display panel away from the cover layer. The support layer has a through hole and at least one first blind hole. The extension direction of the first blind hole is different from the extension direction of the through hole. The through hole penetrates the support layer and the display panel, and the through hole communicates with the outside through the first blind hole. The support layer includes a plurality of protrusions disposed in the first blind hole. Thus, by providing the first blind hole in the support layer to connect the through hole and the outside, the pressure difference between the through hole and the outside can be eliminated, thereby improving the problem of poor collapse of the cover layer at the through hole position. Moreover, the protrusions in the first blind hole are used to prevent the impact resistance of the display module from being reduced and to prevent the protective film adhesive of the support layer from filling the first blind hole and weakening the communication performance of the first blind hole, thereby improving the problem of poor collapse of the cover layer without affecting the impact resistance of the module.

[0058] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0059] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display module, comprising: Display panel; A cover plate layer is disposed on the light-emitting side of the display panel; A support layer is disposed on the side of the display panel opposite to the cover layer, and the support layer has a through hole that penetrates the support layer and the display panel. The support layer further includes at least one first blind hole, the extension direction of which is different from that of the through hole. The through hole communicates with the outside through the first blind hole, and the support layer includes a plurality of protrusions disposed in the first blind hole.

2. The display module according to claim 1, wherein, There is a first gap between two adjacent bosses, and the adjacent first gaps at least partially overlap in the extension direction of the first blind hole; there is a second gap between a portion of the bosses and the sidewall of the first blind hole, and the adjacent second gaps at least partially overlap in the extension direction of the first blind hole.

3. The display module according to claim 2, wherein, In a direction perpendicular to the extension direction of the first blind hole, the length of the first gap is equal to the length of the second gap, and the length of the first gap is 1 / 10 to 1 / 5 of the width of the first blind hole.

4. The display module according to claim 2, wherein, The cross-sectional shape of the boss includes a circle, a triangle, and a polygon; the longitudinal cross-sectional shape of the boss includes a triangle, a trapezoid, and a rectangle.

5. The display module according to claim 2, wherein, In the extending direction of the blind hole, the plurality of bosses are arranged in at least one of the following shapes: straight line, Z-shape, S-shape, and X-shape.

6. The display module according to claim 1, wherein, The total area of ​​all the bosses within the first blind hole accounts for 1 / 5 to 1 / 3 of the area of ​​the first blind hole.

7. The display module according to claim 1, wherein, In the thickness direction of the display module, the height of the boss is equal to the depth of the first blind hole.

8. The display module according to claim 7, wherein, The ratio of the depth of the first blind hole to the thickness of the support layer ranges from 1 / 4 to 2 / 3.

9. The display module according to claim 8, wherein, The depth of the first blind hole is equal to half the thickness of the support layer.

10. The display module according to any one of claims 1 to 9, wherein, The support layer includes an upper surface and a lower surface opposite to each other, and a side surface connecting the upper surface and the lower surface. The upper surface is close to the display panel. The first blind hole forms a first opening on the side surface, and a second opening is formed on the side close to the through hole. The second opening communicates with the first opening.

11. The display module according to claim 10, wherein, The first blind hole is formed on the lower surface, and the boss includes an opposing top and a bottom, the top being located on the side of the bottom away from the display panel, and the area of ​​the top being smaller than the area of ​​the bottom.

12. The display module according to claim 11, wherein, The display module further includes a bending area and a non-bending area located on at least one side of the bending area, and the through hole and the first blind hole are both located in the non-bending area; The lower surface of the support layer is further provided with at least one second blind hole, which is located in the bending area and has a depth equal to that of the first blind hole.

13. The display module according to claim 12, wherein, The extension direction of the second blind hole is parallel to the bending axis of the display module, and the extension direction of the first blind hole is different from that of the second blind hole.

14. The display module according to claim 10, wherein, The minimum distance between the first opening and the second opening is equal to the minimum distance between the through hole and the boundary of the support layer.

15. The display module according to claim 10, wherein, The width of the second opening is 15% to 25% of the diameter of the through hole.

16. The display module according to claim 10, wherein, The number of blind holes is 2, and the two blind holes extend in the same direction, or the two blind holes are arranged in an X-shape or a V-shape.

17. The display module according to claim 10, wherein, Each of the first blind holes includes a main first blind hole and at least one sub-first blind hole, wherein the sub-first blind hole is in communication with the main first blind hole.

18. The display module according to claim 17, wherein, The number of sub-first blind holes is 2, and the two sub-first blind holes are located on both sides of the main first blind hole and are symmetrical about the main first blind hole.

19. The display module according to claim 10, wherein, The display module also includes: A polarizer is disposed between the cover plate layer and the display panel; A backplate is disposed between the display panel and the support layer; A buffer layer is disposed between the back plate and the support layer; The through-hole also penetrates the buffer layer, the back plate, and the polarizer.

20. A display device comprising a display module as claimed in any one of claims 1 to 19.

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