Display module and display device

Abstract

The invention provides a display module and a display device.The display module comprises a display panel, a cover plate layer arranged on the light emitting side of the display panel and a supporting layer arranged on the side, away from the cover plate layer, of the display panel, the supporting layer is provided with a through hole and at least one first blind hole, and the extending direction of the first blind hole is different from the extending direction of the through hole; the through hole penetrates through the supporting layer and the display panel, the through hole is communicated with the outside through the first blind hole, and the supporting layer comprises a plurality of bosses arranged in the first blind hole; thus, the first blind hole is formed in the supporting layer to communicate the through hole with the outside, the pressure difference between the through hole and the outside can be eliminated, and the problem that the cover plate layer collapses and is poor at the position of the through hole is solved; moreover, a boss is arranged in the first blind hole and used for preventing the shock resistance of the display module from being reduced and preventing the first blind hole from being filled with a protective film adhesive of the supporting layer to weaken the communication performance of the first blind hole, so that the problem of poor collapse of the cover plate layer is solved on the premise that the shock resistance of the module is not affected.

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] The display module will go through multiple lamination processes from a single display layer to the final product, and each lamination process usually requires a degassing process to ensure the lamination effect. However, after the support layer is laminated, a cavity will form in the front camera hole of the module. At this time, pressurized degassing will cause the cover layer in the front camera hole area to collapse poorly because the pressure in the front camera hole is lower than the pressure in the degassing machine. Summary of the invention

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

[0004] To solve the above problems, the technical solutions provided by this application are as follows:

[0005] The present application provides a display module, which includes:

[0006] Display panel;

[0007] A cover layer, arranged on the light-emitting side of the display panel;

[0008] A support layer, disposed on a side of the display panel away from the cover layer, the support layer having a through hole, the through hole passing through the support layer and the display panel;

[0009] The support layer further has 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 is connected to the outside through the first blind hole, and the support layer includes a plurality of bosses arranged in the first blind hole.

[0010] In the display module provided in the embodiment of the present application, a first gap is provided between two adjacent bosses, and the adjacent first gaps at least partially overlap in the extension direction of the first blind hole; a second gap is provided between some of the bosses and the side walls of the first blind hole, and the adjacent second gaps at least partially overlap in the extension direction of the first blind hole.

[0011] In the display module provided in the embodiment of the present application, 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 accounts for 1 / 10 to 1 / 5 of the width of the first blind hole.

[0012] In the display module provided in the embodiment of the present application, the total area of ​​all the bosses in the first blind hole accounts for 1 / 5 to 1 / 3 of the area of ​​the first blind hole.

[0013] In the display module provided in the embodiment of the present application, in the thickness direction of the display module, the height of the boss is equal to the depth of the first blind hole.

[0014] In the display module provided in the embodiment of the present application, the ratio of the depth of the first blind hole to the thickness of the support layer ranges from 1 / 4 to 2 / 3.

[0015] In the display module provided in the embodiment of the present application, the depth of the first blind hole is equal to half the thickness of the supporting layer.

[0016] In the display module provided in the embodiment of the present application, the supporting layer includes an upper surface and a lower surface relative 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 forms a second opening on a side close to the through hole, and the second opening is connected to the first opening.

[0017] In the display module provided in the embodiment of the present application, the first blind hole is formed on the lower surface, the boss includes a relative top and bottom, the top is located on the side of the bottom away from the display panel, and the area of ​​the top is smaller than the area of ​​the bottom.

[0018] In the display module provided in the embodiment of the present application, the display module further includes a bending area and a non-bending area located at least on one side of the bending area, and the through hole and the first blind hole are both located in the non-bending area;

[0019] At least one second blind hole is further formed on the lower surface of the support layer. The second blind hole is located in the bending area. The depth of the second blind hole is equal to the depth of the first blind hole.

[0020] In the display module provided in the embodiment of the present application, 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 the extension direction of the second blind hole.

[0021] In the display module provided in the embodiment of the present application, 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 supporting layer.

[0022] In the display module provided in the embodiment of the present application, the width of the second opening accounts for 15% to 25% of the diameter of the through hole.

[0023] In the display module provided in the embodiment of the present application, each of the first blind holes includes a main first blind hole and at least one sub-first blind hole, and the sub-first blind hole is connected to the main first blind hole.

[0024] In the display module provided in the embodiment of the present application, the number of the 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.

[0025] In the display module provided in the embodiment of the present application, the display module further includes:

[0026] A polarizer, disposed between the cover layer and the display panel;

[0027] A back plate, disposed between the display panel and the support layer;

[0028] A buffer layer, disposed between the back plate and the support layer;

[0029] Wherein, the through hole also passes through the buffer layer, the back plate and the polarizer.

[0030] An embodiment of the present application further provides a display device, which includes the display module described in one of the aforementioned embodiments.

[0031] The beneficial effects of the present application are as follows: in the display module and display device provided by the present application, the display module includes a display panel, a cover layer arranged on the light-emitting side of the display panel, and a support layer arranged 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 passes through the support layer and the display panel, the through hole is connected to the outside world through the first blind hole, and the support layer includes a plurality of bosses arranged in the first blind hole; in this way, by arranging the first blind hole in the support layer to connect the through hole and the outside world, the pressure difference between the through hole and the outside world can be eliminated to improve the problem of poor collapse of the cover layer at the through hole position; moreover, a boss is arranged in the first blind hole to prevent the impact resistance of the display module from being reduced and to prevent the protective film glue of the support layer from filling the first blind hole and weakening the connectivity of the first blind hole, thereby improving the problem of poor collapse of the cover layer without affecting the impact resistance of the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A schematic diagram of a comparison display module provided in an embodiment of the present application.

[0034] Figure 2 A schematic diagram of another comparison display module provided in an embodiment of the present application.

[0035] Figure 3 A schematic diagram of a planar structure of a display module provided in an embodiment of the present application.

[0036] Figure 4 for Figure 3 A schematic diagram of the partial cross-sectional structure of the module is shown in FIG.

[0037] Figure 5 for Figure 4 Schematic diagram of the structure after removing the protective film.

[0038] Figure 6 for Figure 5 Schematic diagram of a local planar structure of the middle support layer.

[0039] Figure 7 for Figure 6 Schematic diagram of some detailed structures of the first blind hole.

[0040] Figure 8 Schematic diagrams of cross section and longitudinal section of the boss provided in the embodiment of the present application.

[0041] Fig. 9 for Figure 4 Display module and Figure 2 The schematic diagram showing the comparison of the impact resistance of the modules is shown in FIG.

[0042] Fig.10 A schematic diagram of another partial planar structure of the support layer provided in an embodiment of the present application.

[0043] Fig.11 A schematic diagram of another partial planar structure of the support layer provided in an embodiment of the present application.

[0044] Fig.12 A schematic diagram of another partial planar structure of the support layer provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be implemented in. The directional terms mentioned in the present application, such as [up], [down], [front], [back], [left], [right], [inside], [outside], [side], etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present application, rather than to limit the present application. In the figures, units with similar structures are represented by the same reference numerals. In the accompanying drawings, the thickness of some layers and regions is exaggerated for clear understanding and ease of description. That is, the size and thickness of each component shown in the drawings are arbitrarily shown, but the present application is not limited to this.

[0046] Reference Figure 1 , Figure 1 A schematic diagram of a comparative display module 100' is provided for an embodiment of the present application, wherein 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' also includes a polarizer 40' located between the cover layer 20' and the display panel 10', and a backplane 50' and a buffer layer 60' located between the support layer 30' and the display panel 10', wherein the buffer layer 60' is located between the backplane 50' and the support layer 30'. The polarizer 40' is bonded to the display panel 10' via an adhesive layer 70'.

[0047] The display module 100' will go through multiple laminating processes from the display panel 10' to the final product, and a degassing process is usually required after each laminating process to ensure the laminating effect. In the laminating process of the display module 100', in order to protect the support layer 30', a protective film 80' will be attached to the support layer 30'. The protective film 80' is laminated to the display panel 10' along with the support layer 30' and is torn off during the assembly process of the whole machine. However, after the support layer 30' is laminated, the front camera hole 301' of the display module 100' forms a cavity between the protective film 80' and the cover layer 20'. At this time, pressurized degassing will cause the cover layer 20' to form a collapsed portion 21' at the position corresponding to the front camera hole 301' because the pressure in the front camera hole 301' is lower than the pressure in the degassing machine, resulting in poor collapse.

[0048] To this end, the inventors of the present application found in their research that: Figure 2 , Figure 2 A schematic diagram of another comparison display module 100' provided for an embodiment of the present 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' may be opened on the protective film 80' of the support layer 30', and the exhaust groove 801' is arranged corresponding to the front camera hole 301' and is connected with the front camera hole 301', so that the front camera hole 301' is connected with the outside through the exhaust groove 801', and the air pressure in the front camera hole 301' is consistent with the air pressure in the degassing machine, thereby avoiding the poor collapse of the cover layer 20' at the position of the front camera hole 301'. However, the exhaust groove 801' may be opened in the degassing machine, allowing foreign matter to enter the front camera hole 301'; in addition, when the exhaust groove 801' is formed by die-cutting the protective film 80', debris of the protective film 80' may adhere to the edge of the exhaust groove 801' and fall into the front camera hole 301' during the module manufacturing process, resulting in a poor appearance of the product.

[0049] In view of this, the inventor of the present application has proposed a display module and a display device after further in-depth research to solve the above problems.

[0050] Please refer to Figures 3 to 9 , Figure 3 A schematic diagram of a planar structure of a display module provided in an embodiment of the present application, Figure 4 for Figure 3 The schematic diagram of the partial cross-section structure of the display module is shown in the figure. Figure 5 for Figure 4 Schematic diagram of the structure after removing the protective film. Figure 6 for Figure 5 A schematic diagram of a local plane structure of the middle support layer. Figure 7 for Figure 6 Schematic diagram of some details of the first blind hole, Figure 8 The cross-sectional and longitudinal cross-sectional schematic diagrams of the boss provided in the embodiment of the present application are as follows: Fig. 9 for Figure 4 Display module and Figure 2 The schematic diagram showing the comparison of the impact resistance of the modules is shown in FIG.

[0051] Reference Figure 3 and Figure 4 The display module 100 includes a display panel 10, a cover layer 20 and a support layer 30. The cover layer 20 is arranged on the light-emitting side of the display panel 10, and the light-emitting side of the display panel 10 refers to the side of the display panel 10 used to display the picture. The display panel 10 includes a light-emitting diode (LED) display panel, a micro light-emitting diode (Micro-LED) display panel or a sub-millimeter light-emitting diode (Mini-LED) display panel. Optionally, the display panel 10 is a flexible display panel to achieve bending, folding, curling, etc.

[0052] The support layer 30 is arranged on the side of the display panel 10 away from the cover layer 20, and the support layer 30 has a through hole 301, and the through hole 301 passes through the support layer 30 and the display panel 10, but does not extend to the cover layer 20. The through hole 301 is used to provide a light-transmitting passage for functional elements such as a camera to realize functions such as video recording. The embodiment of the present application takes the realization of the video recording function as an example to illustrate that the camera is arranged corresponding to the through hole 301, and external light can reach the photosensitive element of the camera through the through hole 301, thereby improving the imaging effect of the camera.

[0053] Optionally, the cover layer 20 may include at least one of transparent substrates such as glass, ultra-thin glass, PET, PI, etc. For example, when the display module 100 is a flexible display module 100, the cover layer 20 may be formed of 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.

[0054] The display module 100 further includes a polarizer 40, a backplane 50 and a buffer layer 60, wherein the polarizer 40 is disposed between the cover layer 20 and the display panel 10. The backplane 50 is disposed between the display panel 10 and the support layer 30. The buffer layer 60 is disposed between the backplane 50 and the support layer 30. The polarizer 40 can be attached to the display panel 10 through an adhesive layer 70. The through hole 301 also penetrates the buffer layer 60, the backplane 50, the adhesive layer 70 and the polarizer 40. The material of the backplane 50 includes PET, etc., the material of the buffer layer 60 includes foam, PI, etc., and the material of the adhesive layer 70 includes transparent optical glue such as OCA.

[0055] The support layer 30 further has at least one first blind hole 302, and the through hole 301 is connected to the outside through the first blind hole 302. 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, and the first blind hole 302 extends along the first direction X, that is, the first direction X is the extension direction of the first blind hole 302, for example, the first direction X is the length direction of the first blind hole 302, and the first direction X is perpendicular to the thickness direction Z of the display module 100, and the thickness direction Z of the display module 100 is also the stacking direction of each layer 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.

[0056] In this embodiment, the through hole 301 on the supporting layer 30 is connected to the outside world through the first blind hole 302, so that when the display module 100 is subjected to a degassing process after being bonded to the supporting layer 30 in the module bonding process, the through hole 301 can be connected to the external degassing machine environment, so that the air pressure in the through hole 301 is consistent with the air pressure in the degassing machine, thereby avoiding the cover layer 20 from collapsing at the position of the through hole 301. Moreover, by arranging the first blind hole 302 on the supporting layer 30, there is no need to open an exhaust groove on the protective film 80 of the supporting layer 30. In this way, it can be avoided that the exhaust groove is opened on the protective film 80, which causes foreign matter to enter the through hole 301 and cause a poor appearance of the product.

[0057] It should be noted that when the support layer 30 is attached in 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 attached to the display panel 10 together with the support layer 30 to protect the support layer 30. The protective film 80 exists in the module process stage of the display module 100. When the display module 100 enters the whole machine assembly stage, the protective film 80 will be torn off in the whole machine assembly process. After the protective film 80 on the display module 100 is torn off, as shown in FIG. Figure 5 That is, after the display module 100 of the present application is applied to a display device, the display module 100 does not include the protective film 80 .

[0058] Continue to refer to Figure 4 The supporting layer 30 includes an upper surface 32 and a lower surface 33 relative 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 forms a second opening 3021 on a side close to the through hole 301. The second opening 3021 is connected to the through hole 301, and the second opening 3021 is connected to the first opening 3022.

[0059] In one embodiment, the first blind hole 302 is formed on the lower surface 33 of the support layer 30 to reduce the difficulty of manufacturing the first blind hole 302 and take into account the support performance of the support layer 30. Of course, in some other embodiments, the first blind hole 302 can also be formed inside the support layer 30, or the first blind hole 302 can also be formed on the upper surface 32 of the support layer 30. The embodiment of the present application takes the first blind hole 302 formed on the lower surface 33 of the support layer 30 as an example for explanation.

[0060] Reference Figure 5In order to further reduce the influence of the first blind hole 302 provided on the support layer 30 on the support performance of the support layer 30 and prevent the impact resistance of the display module 100 from being reduced, the ratio of the depth H1 of the first blind hole 302 to the thickness H2 of the support layer 30 in the present application is in the range of 1 / 4 to 2 / 3, for example, the depth H1 of the first blind hole 302 is equal to half of 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, for example, 0.1 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, etc. In addition, the thickness H2 of the support layer 30 and the depth H1 of the first blind hole 302 both refer to the distance in the thickness direction Z of the display module 100.

[0061] Reference Figure 4 , Figure 5 , Figure 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, the second direction Y is the width direction of the first blind hole 302, the first direction X is perpendicular to the second direction Y, and the first direction X and the second direction Y are both perpendicular to the thickness direction Z of the display module 100, that is, the first direction X and the second direction Y are both parallel to the horizontal plane where the supporting layer 30 is located. The first blind hole 302 extends along the first direction X, so the first direction X is the extension direction of the first blind hole 302.

[0062] The first blind hole 302 is in the shape of a long strip, for example, the cross-sectional shape of the first blind hole 302 is a rectangle. 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 time, the length L1 of the first blind hole 302 is the smallest. In this way, by setting the first blind hole 302 of a smaller length, the through hole 301 can be connected to the outside world, improving the problem of poor collapse of the cover layer 20 at the position of the through hole 301. Moreover, by setting the first blind hole 302 of a smaller length, the influence on the supporting performance of the support layer 30 can be further reduced, and the impact resistance of the display module 100 can be prevented from being reduced. Among them, 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.

[0063] The width W1 of the second opening 3021 accounts for 15% to 25% of the diameter of the through hole 301, such as 15%, 16%, 17%, 18%, 19%, 20%, 22%, 23%, 25%, etc., so as to reduce the influence of the first blind hole 302 on the supporting performance of the supporting layer 30 while realizing the communication between the through hole 301 and the outside. The width of the second opening 3021 ranges from 0.5 mm to 0.75 mm, such as 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 may be equal to the width W2 of the second opening 3021, and the width W1 of the first blind hole 302 may be characterized by the width W1 of the first opening 3022 or the width W1 of the second opening 3021.

[0064] Reference Figure 6 and Figure 7 The support layer 30 includes a plurality of bosses 31 disposed in the first blind hole 302, and the bosses 31 are used to further prevent the reduction of the impact resistance of the display module 100 and prevent the protective film 80 of the support layer 30 from filling the first blind hole 302 with glue and weakening the connectivity of the first blind hole 302, thereby improving the problem of poor collapse of the cover layer 20 without affecting the impact resistance of the module.

[0065] There is a first gap D1 between two adjacent bosses 31, and the adjacent first gaps D1 at least partially overlap in the extension direction of the first blind hole 302; there is a second gap D2 between part of the bosses 31 and the side walls of the first blind hole 302, and the adjacent second gaps D2 at least partially overlap in the extension 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 there is a second gap D2 between part of the bosses 31 and the side wall 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 is equal to the second gap D2, and the second gap D2 is 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 reduction of the impact resistance of the display module 100 and prevent the protective film 80 of the supporting layer 30 from filling the first blind hole 302 with glue and weakening the connectivity of the first blind hole 302. Among them, 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, and the length of the first gap D1 accounts for 1 / 10 to 1 / 5 of the width of the first blind hole 302, so as to avoid affecting the exhaust performance of the first blind hole 302 due to the first gap D1 and the second gap D2 being set too small, and to avoid affecting the support performance of the support layer 30 due to the first gap D1 and the second gap D2 being set 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; the size of the third gap D3 is 0.1 mm to 0.15 mm.

[0066] The plurality of bosses 31 are arranged in sequence and at intervals in the length direction of the first blind hole 302 and in the width direction of the first blind hole 302. For example, the plurality of bosses 31 are overlapped in the length direction of the first blind hole 302, and the plurality of bosses 31 are overlapped in the width direction of the first blind hole 302, so that the plurality of bosses 31 are arranged in a straight line in the length direction of the first blind hole 302 and in the width direction of the first blind hole 302. Of course, in some other embodiments, only one boss 31 may be arranged in the width direction of the first blind hole 302. In this case, the plurality of bosses 31 in the first blind hole 302 are arranged in a row in the length direction of the first blind hole 302. In addition, in the extension direction of the first blind hole 302, the plurality of bosses 31 may also be arranged in at least one of a Z-shape, an S-shape, and an X-shape.

[0067] Continue to refer to Figure 7 , the length L2 of each boss 31 in the first direction X is equal to the third gap D3, and the width W2 of each boss 31 in the second direction Y is equal to the first gap D1, so as to reasonably set the distribution density of the boss 31 in the first blind hole 302, so as to better prevent the reduction of the impact resistance of the display module 100 and prevent the protective film 80 of the support layer 30 from filling the first blind hole 302 with glue and weakening the connectivity of the first blind hole 302. Optionally, the total area of ​​all the bosses 31 in 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.

[0068] Reference 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 protection film 80 and prevent the protection 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 boss 31 includes a circle, a triangle, a polygon, etc., such as Figure 8 The cross-sectional shape of the boss 31 shown in (a) is circular. Figure 8 The cross-sectional shape of the boss 31 shown in (b) is a triangle. Figure 8 The cross-sectional shape of the boss 31 shown in (c) is a square. Figure 8 The cross-sectional shape of the boss 31 shown in (d) is a hexagon; the longitudinal cross-sectional shape of the boss 31 includes a triangle, a trapezoid, a rectangle, etc., such as Figure 8 The longitudinal cross-section of the boss 31 shown in (e) is a rectangle. Figure 8 The longitudinal cross-section of the boss 31 shown in (f) is a trapezoid. Figure 8 The longitudinal cross-section of the boss 31 shown in (g) is a triangle.

[0069] The first blind hole 302 provided with the boss 31 can be formed simultaneously with the first blind hole 302 and the boss 31 by a half-etching process, and the boss 31 includes a top 311 and a bottom 312 opposite to each other, and the top 311 is located on a side of the bottom 312 away from the display panel 10, and the area of ​​the top 311 is smaller than that of the bottom 312.

[0070] In one embodiment, continue to refer to Figure 3 , Figure 4 and Figure 5, the display module 100100 further includes a bending area BA and a non-bending area NA located at least on one side of the bending area BA, and the display module 100 can realize functions such as bending and folding in the bending area BA. The through hole 301 and the first blind hole 302 are both located in the non-bending area NA. The lower surface 33 of the support layer 30 is also formed with at least one second blind hole 305, and the second blind hole 305 is located in the bending area BA. For example, referring to Figure 3 , the embodiment of the present application takes the bending area BA being located between the two non-bending areas as an example. The non-bending area NA includes a full engraved area FEA and a half engraved area PEA located on at least one side of the full engraved area FEA. The embodiment of the present application takes the full engraved area FEA being located between the two half engraved areas PEA as an example, and the second blind hole 305 is located in the half engraved area PEA. The extension direction of the second blind hole 305 is 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 direction of 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 influence of the first blind hole 302 on the supporting performance of the supporting layer 30 near the through hole 301.

[0071] Reference Figure 4 , the depth of the second blind hole 305 is equal to the depth of the first blind hole 302, so that the first blind hole 302 and the second blind hole 305 can be formed by the same half-etching process. The support layer 30 forms a stress release portion 306 in the full-etching area FEA, and the stress release portion 306 includes a plurality of hollow patterns penetrating the support layer 30. The stress release portion 306 and the second blind hole 305 are used to release the bending stress of the bending area BA.

[0072] Reference Fig. 9 , compared through stress simulation Figure 4 The exemplary display module 100 and Figure 2 The risk of failure of the film layer on the display panel 10 array layer (Panel Array) of the exemplary display module 100' under the impact of a falling ball, a falling pen, and a sharp tip is Fig. 9 The bar chart on the left side of each test item is the failure risk data of the film layer designed with the existing scheme, that is, Figure 2 The example shows the film failure risk data of the module 100'. The bar chart on the right side of each test item is the film failure risk data designed in this proposal, that is, Figure 4 The example shows the film failure risk data of the module 100. Fig. 9 It can be seen that in the drop ball test, Figure 4The risk of film failure of the exemplary display module 100 is less than Figure 2 The example shows the risk of film failure of the module 100 ′, and during the pen drop and tip impact tests, Figure 4 The risk of film failure of the exemplary display module 100 is slightly greater than Figure 2 The failure risk of the film layer of the exemplary display module 100 ′ is compared with Figure 4 The exemplary display module 100 and Figure 2 From the data of the film failure risk of the exemplary display module 100' under the impact of a falling ball, a falling pen and a pointed tip, it can be seen that by providing the first blind hole 302 with the boss 31 on the support layer 30, the problem of poor collapse of the cover layer 20 can be improved without affecting the impact resistance of the module.

[0073] In one embodiment, referring to Fig.10 , Fig.10 Another partial planar structural schematic diagram of the support layer 30 provided in the embodiment of the present application. Figure 6 The difference of the exemplary support layer 30 is that each of the first blind holes 302 includes a main first blind hole 303 and at least one sub-first blind hole 304, and the sub-first blind hole 304 is connected to the main first blind hole 303. Optionally, the number of the sub-first blind holes 304 is 2, 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 connection between the through hole 301 and the outside world, and reduce the impact on the impact resistance of the display module 100. For other descriptions, please refer to the above embodiment, which will not be repeated here.

[0074] In one embodiment, referring to Fig.11 , Fig.11 This is another partial planar structural schematic diagram of the support layer 30 provided in the embodiment of the present application. Figure 6 The difference of the exemplary support layer 30 is that the number of the first blind holes 302 is 2, and the two first blind holes 302-1 and 302-2 extend in the same direction. For other descriptions, please refer to the above embodiment, which will not be repeated here.

[0075] In one embodiment, referring to Fig.12 , Fig.12 This is another partial planar structural diagram of the support layer 30 provided in the embodiment of the present application. Figure 6 The difference of the exemplary support layer 30 is that the number of the first blind holes 302 is 2, 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 can also be arranged in other shapes such as an X shape. For other descriptions, please refer to the above embodiment, which will not be repeated here.

[0076] Based on the same inventive concept, the embodiment of the present application further provides a display device, which includes the display module 100 described in one of the above embodiments. The display device can be an electronic display device such as a mobile phone, a tablet, or a television.

[0077] According to the above embodiments, it can be seen that:

[0078] In a display module and a display device provided by the present application, the display module includes a display panel, a cover layer arranged on the light-emitting side of the display panel, and a support layer arranged 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 passes through the support layer and the display panel, the through hole is connected to the outside world through the first blind hole, and the support layer includes a plurality of bosses arranged in the first blind hole; in this way, by arranging the first blind hole in the support layer to connect the through hole and the outside world, the pressure difference between the through hole and the outside world can be eliminated to improve the problem of poor collapse of the cover layer at the through hole position; moreover, a boss is arranged in the first blind hole to prevent the impact resistance of the display module from being reduced and to prevent the protective film glue of the support layer from filling the first blind hole and weakening the connectivity of the first blind hole, thereby improving the problem of poor collapse of the cover layer without affecting the impact resistance of the module.

[0079] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0080] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display module, characterized in that: include: Display panel; A cover layer, arranged on the light-emitting side of the display panel; A support layer, disposed on a side of the display panel away from the cover layer, the support layer having a through hole, the through hole passing through the support layer and the display panel; The support layer further has 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 is connected to the outside through the first blind hole, and the support layer includes a plurality of bosses arranged in the first blind hole.

2. The display module according to claim 1, characterized in that: 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 some of the bosses and the side walls 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, characterized in that: In a direction perpendicular to an extending direction of the first blind hole, a length of the first gap is equal to a length of the second gap, and the length of the first gap accounts for 1 / 10 to 1 / 5 of a width of the first blind hole.

4. The display module according to claim 1, characterized in that: The total area of ​​all the bosses in the first blind hole accounts for 1 / 5 to 1 / 3 of the area of ​​the first blind hole.

5. The display module according to claim 1, characterized in that: In the thickness direction of the display module, the height of the boss is equal to the depth of the first blind hole.

6. The display module according to claim 5, characterized in that: The ratio of the depth of the first blind hole to the thickness of the support layer is in a range of 1 / 4 to 2 / 3.

7. The display module according to claim 6, characterized in that: The depth of the first blind hole is equal to half the thickness of the supporting layer.

8. The display module according to any one of claims 1 to 7, characterized in that: The supporting layer includes an upper surface and a lower surface relative 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 forms a second opening on a side close to the through hole, and the second opening is connected to the first opening.

9. The display module according to claim 8, characterized in that: The first blind hole is formed on the lower surface, the boss includes a top and a bottom opposite to each other, the top is located on a side of the bottom away from the display panel, and an area of ​​the top is smaller than an area of ​​the bottom.

10. The display module according to claim 9, characterized in that: The display module further includes a bending area and a non-bending area located at least on one side of the bending area, and the through hole and the first blind hole are both located in the non-bending area; At least one second blind hole is further formed on the lower surface of the support layer. The second blind hole is located in the bending area. The depth of the second blind hole is equal to the depth of the first blind hole.

11. The display module according to claim 10, characterized in that: An extending direction of the second blind hole is parallel to a bending axis of the display module, and an extending direction of the first blind hole is different from an extending direction of the second blind hole.

12. The display module according to claim 8, characterized in that: 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 supporting layer.

13. The display module according to claim 8, characterized in that: The width of the second opening accounts for 15% to 25% of the diameter of the through hole.

14. The display module according to claim 8, characterized in that: Each of the first blind holes includes a main first blind hole and at least one sub-first blind hole, and the sub-first blind hole is connected to the main first blind hole.

15. The display module according to claim 14, characterized in that: The number of the 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 with respect to the main first blind hole.

16. The display module according to claim 8, characterized in that: The display module also includes: A polarizer, disposed between the cover layer and the display panel; A back plate, disposed between the display panel and the support layer; A buffer layer, disposed between the back plate and the support layer; Wherein, the through hole also passes through the buffer layer, the back plate and the polarizer.

17. A display device, characterized in that: Comprising the display module as claimed in any one of claims 1 to 16.

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