Display module and display device

Abstract

The invention discloses a display module and a display device. The display module comprises a composite supporting layer, a display panel, a protection piece and a fixing plate, the display panel comprises a first body, a second body and a bending part connecting the first body and the second body, the first body is arranged on the first side of the composite supporting layer, the second body is arranged on the second side, opposite to the first side, in the composite supporting layer, and the protection piece is arranged on the second side. A first protection part of the protection piece is located on the side, away from the composite supporting layer, of the bent part and extends to the side, away from the first body, of part of the second body. The first sub-plate of the fixing plate is arranged on the surface of the side, away from the first body, of the first protection part, and the Young modulus of the fixing plate is larger than that of the protection piece, so that the shape of the first protection part is the same as that of the fixing plate in the curing process, the uncertainty of the shape of the first protection part is eliminated, and the stability of the first protection part is improved. And the technical problems of interference between the protection piece and the whole machine middle frame and the like are avoided.

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] As electronic devices pursue the development trend of the ultimate full screen, display screens (such as mobile phones) are emerging in the market in an endless stream. In order to pursue the diversification of the appearance of display devices, the narrow bezel design of the display screen is particularly important.

[0003] In current narrow-border displays, the edge area of ​​the display is not strong enough to support the display, resulting in poor impact resistance. To improve the impact resistance of the display, the edge area of ​​the display is usually filled with glue. However, the shape of the glue away from the cover is affected by external factors such as the equipment and material surface tension. Therefore, the shape of the glue cannot be determined, which can easily lead to technical problems such as interference with the middle frame of the entire device. Summary of the invention

[0004] The present application provides a display module and a display device to improve the technical problem that the morphology of the adhesive layer used for support in the existing display device cannot be determined.

[0005] To solve the above-mentioned problems, the technical solutions provided by this application are as follows:

[0006] In a first aspect, the present application provides a display module, comprising:

[0007] Composite support layer;

[0008] The display panel comprises a first body, a second body and a bending portion connecting the first body and the second body, wherein the first body is arranged on a first side of the composite support layer, and the second body is arranged on a second side of the composite support layer opposite to the first side;

[0009] a protective member, comprising a first protective portion, the first protective portion being located on a side of the bent portion away from the composite supporting layer and extending to a side of a portion of the second body away from the first body; and

[0010] The fixing plate comprises a first sub-plate, wherein the first sub-plate is arranged on a surface of the first protection portion away from the first body, and the Young's modulus of the fixing plate is greater than the Young's modulus of the protection member.

[0011] Optionally, the first protection portion includes a first blocking wall and second blocking walls arranged on both sides of the first blocking wall, and the first sub-plate at least covers a surface of the first blocking wall on a side away from the display panel.

[0012] Optionally, at least one of two ends of the first sub-plate in the width direction of the first sub-plate is arranged to at least partially overlap with the corresponding second retaining wall.

[0013] Optionally, the first sub-board is further provided with a hollow hole at least partially overlapping with the first retaining wall in the first protection portion, and the hollow hole penetrates the first sub-board along the thickness direction of the display panel.

[0014] Optionally, the protection member further includes a second protection portion connected to the first protection portion, the second protection portion includes the first retaining wall and the second retaining walls provided on both sides of the first retaining wall, the first protection portion and the second protection portion form a closed first annular structure, and the first annular structure covers the periphery of the display panel;

[0015] Among them, the solid plate also includes a second sub-plate, a third sub-plate and a fourth sub-plate connected to the first sub-plate, the first sub-plate, the second sub-plate, the third sub-plate and the fourth sub-plate form a closed second ring structure, and the second sub-plate, the third sub-plate and the fourth sub-plate are arranged on the surface of the second protection part away from the display panel.

[0016] Optionally, at least one of the first sub-board, the second sub-board, the third sub-board and the fourth sub-board is further provided with a hollow hole that at least partially overlaps with the first retaining wall in the corresponding protection part, and the hollow hole penetrates the corresponding sub-board along the thickness direction of the display panel.

[0017] Optionally, the first sub-board and the third sub-board are arranged in parallel, the second sub-board and the fourth sub-board are arranged in parallel, and the lengths of the first sub-board and the third sub-board are both smaller than the lengths of the second sub-board and the fourth sub-board;

[0018] Wherein, the distance between two adjacent hollow holes on the first sub-board and the third sub-board is smaller than the distance between two adjacent hollow holes on the second sub-board and the fourth sub-board.

[0019] Optionally, the diameter of the hollow hole is less than or equal to half of the width of the fixing plate at the location of the hollow hole.

[0020] Optionally, in the sub-plate of the fixed plate, a distance between two adjacent hollow holes in the middle region is greater than a distance between two adjacent hollow holes in the edge region.

[0021] Optionally, the fixed board also includes a corner sub-board connecting the first sub-board, the second sub-board, the third sub-board and the fourth sub-board, and the width of the corner sub-board is greater than the width of the first sub-board, the second sub-board, the third sub-board and the fourth sub-board.

[0022] Optionally, the display module further comprises a cover layer disposed on a side of the first body away from the composite support layer, the cover layer comprising a planar portion and a curved portion located outside the planar portion, and the curved portion comprises a plurality of side sub-portions located around the planar portion and a corner sub-portion located between two adjacent side sub-portions;

[0023] The first protection portion is connected to at least a surface of the bending portion away from the composite support layer, the side sub-portion corresponding to the bending portion, and the adjacent corner sub-portion.

[0024] Optionally, a surface of the cover layer on a side close to the first protection portion and corresponding to the fixing plate is parallel to a surface of the fixing plate on a side away from the cover layer.

[0025] Optionally, compensation glue is further filled between the cover plate layer and the bending portion, and the gelation rate of the compensation glue is different from the gelation rate of the first retaining wall.

[0026] Optionally, the protection member further comprises a third protection portion connected to the first retaining wall, and at least a portion of the third protection portion is located in the enclosed space between the bending portion and the composite supporting layer;

[0027] The gelation rate of the third protection portion is different from the gelation rate of the first retaining wall.

[0028] Optionally, the second retaining wall includes a first sub-portion and a second sub-portion, the first sub-portion is arranged close to the central area of ​​the display module, and the second sub-portion is arranged away from the central area of ​​the display module;

[0029] Wherein, the Young's modulus of the first sub-section and the second sub-section are both greater than or equal to the Young's modulus of the first retaining wall.

[0030] Optionally, the width of the first sub-portion close to the display panel is greater than or equal to the width of the first sub-portion away from the display panel, and the width of the second sub-portion close to the display panel is greater than or equal to the width of the second sub-portion away from the display panel.

[0031] Optionally, both the first sub-section and the second sub-section include a plurality of retaining wall units connected along a thickness direction of the second retaining wall, and outer walls of the retaining wall units are convex.

[0032] Optionally, the thickness of the fixing plate is smaller than the thickness of the protective member.

[0033] Optionally, the material of the fixing plate includes one of metal, glass, polymethyl methacrylate, polycarbonate, and polyethylene terephthalate.

[0034] In a second aspect, the present application further proposes a display device, which includes the above-mentioned display module and a middle frame, and the protective member and the fixing plate are arranged in the area between the middle frame and the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0036] Figure 1 The structural diagram of the module is displayed for this application;

[0037] Figure 2 for Figure 1 The first type of cross-section view of the middle section AA;

[0038] Figure 3 for Figure 1 The second cross-sectional view of the middle section AA;

[0039] Figure 4 This is a film layer structure diagram of the display panel in the display module of this application;

[0040] Figure 5 for Figure 3 Structural diagram of the middle cover layer;

[0041] Figure 6 This is a structural diagram of the module before bending for this application;

[0042] Figure 7 for Figure 1 The exploded view of the module is shown in the figure;

[0043] Figure 8 for Figure 7 Magnified view of area M in the middle. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0045] See also Figures 1 to 8 The present application proposes a display module 100 , which includes a composite support layer 20 , a display panel 10 , a protective member 30 and a fixing plate 40 .

[0046] In this embodiment, the display panel 10 includes a first body 110, a second body 120, and a bending portion 130 connecting the first body 110 and the second body 120. The first body 110 is disposed on a first side of the composite support layer 20, and the second body 120 is disposed on a second side of the composite support layer 20 opposite to the first side.

[0047] In this embodiment, the protection member 30 includes a first protection portion 31 , which is located on a side of the bending portion 130 away from the composite supporting layer 20 and extends to a side of a portion of the second body 120 away from the first body 110 .

[0048] In this embodiment, the fixing plate 40 includes a first sub-plate 41 . The first sub-plate 41 is disposed on a surface of the first protection portion 31 away from the first body 110 , and the Young's modulus of the fixing plate 40 is greater than that of the protection member 30 .

[0049] It should be noted that for the current narrow-framed display devices, the edge area of ​​the display device has insufficient supporting force, resulting in poor impact resistance of the display screen. In order to improve the impact resistance of the display screen, the edge area of ​​the display screen is usually filled with glue, and the morphology of the glue away from the cover layer 50 is affected by external factors such as the surface tension of the device and the material. Therefore, the morphology of the glue cannot be determined, which is prone to technical problems such as interference with the middle frame of the entire machine.

[0050] In the present application, by arranging the first sub-plate 41 of the fixing plate 40 on the surface of the first protection part 31 away from the first body 110, and the Young's modulus of the fixing plate 40 is greater than the Young's modulus of the protective member 30, the morphology of the first protection part 31 in the curing process is the same as that of the fixing plate 40, thereby eliminating the uncertainty of the morphology of the first protection part 31 and avoiding technical problems such as interference between the protective member 30 and the middle frame of the entire machine.

[0051] The technical solution of the present application is now described in conjunction with specific embodiments.

[0052] In this embodiment, the first body 110 has a display area and a non-display area adjacent to the display area. For example, the non-display area surrounds the display area so that the display area is surrounded by the non-display area. The display area is an area in the display panel 10 for performing a display function, and a plurality of display units for realizing the display function are arranged therein. The non-display area may be a frame area of ​​the display panel 10, and a functional component may be arranged therein to assist the display unit in the display area to perform display.

[0053] In this embodiment, the second body 120 is provided with a binding terminal 121, which can be connected to an external circuit, and transmits a signal input from the external circuit to a data line, thereby driving the display panel 10 to display a picture. For example, the binding terminal 121 can be bound and connected to a driver chip IC, etc., to provide power and a driving signal, etc., to the display panel 10.

[0054] In this embodiment, a plurality of fan-out wirings are disposed in the bending portion 130 to implement data transmission between the second body 120 and the first body 110 .

[0055] See also Figure 4 , Figure 4 Schematic diagram of the display panel 10 of the present application. The display panel 10 may include a base substrate 140, a driving circuit layer 150 disposed on the base substrate 140, a pixel definition layer 160 and a light emitting device layer 170 disposed on the driving circuit layer 150, and an encapsulation layer 180 disposed on the pixel definition layer 160.

[0056] In the present embodiment, the base substrate 140 supports various layers disposed on the base substrate 140. When the display panel is a bottom-emitting light-emitting display device or a double-sided light-emitting display device, a transparent base substrate is used. When the display panel is a top-emitting light-emitting display device, a semi-transparent or opaque base substrate as well as a transparent base substrate can be used.

[0057] In the present embodiment, the substrate substrate 140 is made of an insulating material such as glass, quartz or polymer resin. The substrate substrate 140 may be a rigid substrate or a flexible substrate that can be bent, folded, rolled, etc. Examples of flexible materials for the flexible substrate include polyimide (PI), but are not limited to polyimide (PI).

[0058] See also Figure 4 The driving circuit layer 150 may include a plurality of thin film transistors, which may be of an etch-stop type, a back-channel etch type, or may be divided into a bottom-gate thin film transistor, a top-gate thin film transistor, and the like according to the position of the gate electrode and the active layer, without any specific limitation. For example, Figure 4 The thin film transistor shown in the figure is a top-gate thin film transistor, which may include a light shielding unit 151 disposed on a substrate, a buffer layer 152 disposed on the light shielding unit 151, an active layer 153 disposed on the buffer layer 152, a gate insulating layer 154 disposed on the active layer 153, a gate layer 155 disposed on the gate insulating layer 154, an inter-insulating layer 156 disposed on the gate layer 155, a source-drain electrode layer 157 disposed on the inter-insulating layer 156, and a planar layer 158 disposed on the source-drain electrode layer 157; Figure 4The structure of the thin film transistor is only an example of the present application, and other types of thin film transistors are also applicable to the present application.

[0059] See also Figure 4 The light emitting device layer 170 may further include an anode layer 171 disposed on the planar layer 158, a light emitting layer 172 disposed on the anode layer 171, and a cathode layer 173 disposed on the light emitting layer 172. The anode layer 171 includes a plurality of anodes, the pixel definition layer 160 includes a plurality of pixel openings corresponding to the plurality of anodes, and each pixel opening exposes an upper surface of an anode, and the light emitting layer may include a plurality of light emitting pixels corresponding to the plurality of anodes.

[0060] See also Figure 4 The encapsulation layer 180 covers the pixel definition layer 160 and continuously covers multiple pixel openings and multiple light-emitting pixels; wherein the encapsulation layer 180 may include at least a first inorganic encapsulation layer 181, a first organic encapsulation layer 182 and a second inorganic encapsulation layer 183 stacked on the pixel definition layer 160.

[0061] See also Figure 2 and Figure 3 The display module 100 further includes a polarizer PL, a cover layer 50 and an optical adhesive layer 60 disposed between the polarizer PL and the cover layer 50 , and the cover layer 50 is bonded to the polarizer PL layer through the optical adhesive layer 60 .

[0062] In this embodiment, a circle of ink layer 70 may be provided on one side of the cover layer 50 close to the optical adhesive layer 60 . The ink layer 70 may be used to shield the peripheral area of ​​the display module 100 , so the ink layer 70 may define the edge area of ​​the display module 100 .

[0063] See also Figure 2 and Figure 3 The display module 100 also includes a composite support layer 20 disposed between the first body 110 and the second body 120. The composite support layer 20 includes a first back plate 21, a second back plate 22, and a functional support layer 23 disposed between the first back plate 21 and the second back plate 22. The first back plate 21 is in contact with the first body 110, and the second back plate 22 is in contact with the second body 120.

[0064] In this embodiment, the material of the first back plate 21 and the second back plate 22 may include polyethylene terephthalate or the like.

[0065] In this embodiment, the functional support layer 23 may include a heat dissipation buffer layer 231 (Super Clean Foam, SCF) and a filling rubber layer 232 (Stiffener, STF), the filling rubber layer 232 is arranged between the second back plate 22 and the heat dissipation buffer layer 231; the heat dissipation buffer layer 231 may include a grid rubber layer, a foam layer and a metal layer stacked in sequence, or a grid rubber layer, a foam layer, a polyimide layer and a metal layer stacked in sequence.

[0066] It should be noted that for a foldable display device, the functional support layer 23 may include a stacked structure of a buffer layer, a rigid layer and a heat dissipation layer. The material of the buffer layer may be a foam or a polyimide layer, the material of the rigid layer may be stainless steel, a metal titanium layer or carbon fiber, etc., and the material of the heat dissipation layer may be a graphite or copper layer, etc.

[0067] In this embodiment, the boundary of the heat dissipation buffer layer 231 close to the bending portion 130 is retracted relative to the boundary of the first back plate 21 close to the bending portion 130, and the boundary of the filling glue layer 232 close to the bending portion 130 is retracted relative to the boundary of the second back plate 22 close to the bending portion 130.

[0068] In this embodiment, the display module 100 further includes a protective adhesive layer 80 disposed on the display panel 10 . The protective adhesive layer 80 covers the bent portion 130 and a portion of the first body 110 and a portion of the second body 120 .

[0069] In this embodiment, the material of the protective adhesive layer 80 may be ultraviolet light curing adhesive.

[0070] It should be noted that the technical solution of the present application is applicable to both non-folding display devices and folding display devices; for non-folding display devices, the cover layer of the present application can be a hard cover layer, and for folding display devices, the cover layer can be a protective layer of ultra-thin glass and built-in optical adhesive.

[0071] Please refer to the attached Figure 2 and Figure 5 , Figure 2 and Figure 3 Same or similar, except Figure 2 The cover layer 50 in the embodiment includes a planar portion 510 and a curved portion 520 located at the periphery of the planar portion 510 , and the curved portion 520 includes a plurality of side sub-portions 521 located at the periphery of the planar portion 510 and a corner sub-portion 522 located between two adjacent side sub-portions 521 .

[0072] In this embodiment, the first protection portion 31 is connected to at least the surface of the bending portion 130 away from the composite supporting layer 20 , and the side sub-portion 521 corresponding to the bending portion 130 and the adjacent corner sub-portion 522 .

[0073] See also Figure 2 and Figure 3 The first protection portion 31 includes a first retaining wall 311 and a second retaining wall 312 arranged on both sides of the first retaining wall 311. The second retaining wall 312 may include a first sub-portion 312a and a second sub-portion 312b arranged at intervals. The first sub-portion 312a is arranged close to the central area of ​​the display module 100, and the second sub-portion 312b is arranged away from the central area of ​​the display module 100.

[0074] In this embodiment, the first retaining wall 311 and the second retaining wall 312 can be formed using a dispensing process. For example, the second retaining wall 312 is formed using a first dispensing process, and after the second retaining wall 312 is solidified, the first retaining wall 311 is formed inside the second retaining wall 312 using a second dispensing process.

[0075] In this embodiment, since the second retaining wall 312 and the first retaining wall 311 are formed in different dispensing processes, the gelation rates of the second retaining wall 312 and the first retaining wall 311 of the present application are different.

[0076] It should be noted that the gelation rate of the present application refers to the mass fraction of the gel part formed in the cross-linking process of the polymer, which characterizes the degree of cross-linking of the polymer; and the gelation rate is related to the type and content of the cross-linking agent, as well as reaction conditions such as reaction temperature, time and pressure. Therefore, the second retaining wall 312 and the first retaining wall 311 of the present application have different gelation rates, which can characterize that the second retaining wall 312 and the first retaining wall 311 are formed in different process steps.

[0077] In this embodiment, since the first protecting portion 31 is provided, a force can be exerted on the bending portion 130 to stabilize its shape, thereby reducing the problem of a larger size of the lower frame caused by its outward expansion; that is, the bending portion 130 acted upon by the first protecting portion 31 can be closer to the display area AA of the display panel 10 than the bending portion 130 not acted upon, thereby making the size of the lower frame smaller.

[0078] In this embodiment, the Young's modulus of the first sub-portion 312a and the second sub-portion 312b are both greater than or equal to the Young's modulus of the first retaining wall 311. When the display module 100 is hit, the second sub-portion 312b directly in contact with the outside world has a larger Young's modulus, so it has a stronger ability to resist deformation, and the first retaining wall 311 located inside it has a smaller Young's modulus, which can absorb the stress it is subjected to to play a buffering role, so as to reduce the stress transmitted to the display area AA, and the arrangement of the first sub-portion 312a can further resist or buffer the stress.

[0079] Secondly, the Young's modulus of the first sub-portion 312a and the second sub-portion 312b are both greater than or equal to the Young's modulus of the first retaining wall 311, which can reduce the risk of deformation of the appearance of the protective component 30, and the buffering effect of the internal first retaining wall 311 can enable the protective component 30 to absorb more stress; in the process, the second retaining wall 312 with a larger Young's modulus can be formed first to fix the appearance shape of the protective component 30, and then the internal first retaining wall 311 is made, which can improve the reliability of the appearance shape of the protective component 30.

[0080] At the same time, the Young's modulus of the first retaining wall 311 may also be greater than or equal to the Young's modulus of the second retaining wall 312. That is, the Young's modulus of the second sub-portion 312b directly in contact with the outside world is smaller, so it can absorb more stress to reduce the release of stress, and the Young's modulus of the first retaining wall 311 located inside it is larger, and its deformation resistance is stronger, which can better block stress to reduce the risk of stress transmission to the display area, and the first sub-panel 41 can further resist or buffer the stress.

[0081] In this embodiment, the Young's modulus of the second sub-portion 312b may be greater than or equal to the Young's modulus of the first sub-portion 312a. That is, the Young's modulus of the second sub-portion 312b in direct contact with the outside of the protective member 30 is larger, thereby reducing the risk of external deformation of the protective member 30; secondly, when the two are equal, the same material can be used to make both at the same time to improve the manufacturing efficiency.

[0082] In this embodiment, since the structure that is in direct contact with the outside world when the display module 100 is impacted is the second sub-portion 312b, the present application can improve the deformation resistance of the second sub-portion 312b by making the width of the second sub-portion 312b greater than or equal to the width of the first sub-portion 312a.

[0083] See also Figure 2 and Figure 3 Since the second retaining wall 312 of the present application is formed by dispensing glue layer by layer from the side close to the display panel 10 to the side away from the display panel 10 using a dispensing process, and since the glue material has a certain fluidity, the width of the first sub-portion 312a of the present application close to the display panel 10 is greater than or equal to the width of the first sub-portion 312a away from the display panel 10, and the width of the second sub-portion 312b close to the display panel 10 is greater than or equal to the width of the second sub-portion 312b away from the display panel 10, that is, the two second retaining walls 312 have a larger width on the side close to the display panel 10.

[0084] In this embodiment, since the second retaining wall 312 is formed by dispensing and stacking layer by layer, the first sub-section 312a and the second sub-section 312b of the present application both include a plurality of retaining wall units 312c connected along the thickness direction of the second retaining wall 312, and the outer wall of the retaining wall unit 312c is convex, for example Figure 2 The structure in .

[0085] At the same time, the outer wall of the second retaining wall 312 can be arranged vertically to the cover layer 50 by using corresponding processes, for example Figure 3 if the edge of the cover layer 50 is a curved surface, a side surface of the second sub-portion 312b close to the edge of the cover layer 50 may be perpendicular to the cover layer 50 at the intersection with the side surface corresponding to the tangent.

[0086] In this embodiment, the main materials of the second retaining wall 312 and the first retaining wall 311 may be the same or different. For example, the main materials of the second retaining wall 312 and the first retaining wall 311 may be polymer materials such as epoxy system or acrylic system.

[0087] In this embodiment, the present application may dope particles of different types and / or different quantities into the corresponding main material, so that the Young's modulus of the second retaining wall 312 and the first retaining wall 311 are different.

[0088] See also Figure 7 The protective member 30 further includes a second protective portion 32 connected to the first protective portion 31 . The first protective portion 31 and the second protective portion 32 form a closed first annular structure, and the first annular structure covers the periphery of the display panel 10 .

[0089] In this embodiment, in order to improve the impact resistance of the edge of the display module 100, the present application can set a protective material around the periphery of the display panel 10. The materials of the first protective part 31 and the second protective part 32 can be the same and prepared in the same process; for example, using a first dispensing process, a circle of second retaining walls is formed along the periphery of the display panel, and then a circle of first retaining walls is formed inside the second retaining walls using a second dispensing process.

[0090] It should be noted that the second protection part 31 of the present application also includes a first retaining wall 311 and a second retaining wall 312 arranged on both sides of the first retaining wall 311, that is, the first retaining wall 311 in the second protection part 32 can be formed in the same process as the first retaining wall 311 in the first protection part 31, and the second retaining wall 312 in the second protection part 32 can be formed in the same process as the second retaining wall 312 in the first protection part 31.

[0091] See also Figure 2 and Figure 3The display module 100 also includes a third protection portion 33 connected to the first retaining wall 311, and at least part of the third protection portion 33 is located in the enclosed space between the bending portion 130 and the composite support layer 20; at the same time, the gelation rate of the third protection portion 33 is different from the gelation rate of the first retaining wall 311.

[0092] In this embodiment, the third protection portion 33 may be formed by a dispensing process.

[0093] For example, see Figure 6 Before the display panel 10 is bent, the filling glue layer 232 and the second back plate 22 are arranged on the side of the second body 120 away from the light emitting surface 10a, and the first back plate 21 and the heat dissipation buffer layer 231 can be arranged on the side of the first body 110 away from the light emitting surface 10a.

[0094] exist Figure 6 In the structure, a protective material 33a is formed on the surface of the bending portion 130 away from the light emitting surface 10a of the display panel 10 by using a dispensing process; secondly, after the protective material 33a is cured for the first time, the second body 120 is bent to the side of the first body 110 away from the light emitting surface 10a, and the protective material 33a is located in the enclosed space WTL between the bending portion 130 and the filling glue layer 232 and the heat dissipation buffer layer 231, and the protective material 33a is cured for the second time; finally, a first protective portion 31 connected to the third protective portion 33 is formed on the surface of the bending portion 130 away from the composite support layer 20 by using a dispensing process, so as to form Figure 2 or Figure 3 structure.

[0095] It should be noted that, since the third protection portion 33 and the first retaining wall 311 are cured in different curing processes, the gelation rate of the third protection portion 33 and the gelation rate of the first retaining wall 311 in the present application are different.

[0096] In this embodiment, the main material of the third protection portion 33 may be the same as the main material of the first protection portion 31 .

[0097] In this embodiment, the third protection part 33 can be a thermosetting material, and the first protection part 31 and the second protection part 32 can be a thermosetting or light-curing material. Since the third protection part 33 is located in the enclosed space WTL, and the enclosed space WTL is a non-light-transmitting area, in order to completely cure the third protection part 33, the third protection part 33 of the present application needs to use a thermosetting material; at the same time, since the first protection part 31 and the second protection part 32 are mainly used to buffer the bending part 130, the curing rate of the first protection part 31 and the second protection part 32 of the present application is not limited, that is, the first protection part 31 of the present application can be a thermosetting material or a light-curing material.

[0098] See also Figure 2 , a compensation glue 50a is also filled between the cover layer 50 and the bending portion 130, and the gelation rate of the filling glue is different from the gelation rate of the first retaining wall 311. When the first retaining wall 311 fills the area of ​​the first sub-portion 312a and the second sub-portion 312b, since there is a small gap in the area between the cover layer 50 and the bending portion 130, the present application can fill the compensation glue 50a in the area before the second retaining wall 312 is set, and after the compensation glue 50a is cured, the second retaining wall 312 and the first retaining wall 311 are set, that is, the gelation rate of the filling glue is different from the gelation rate of the first retaining wall 311.

[0099] In the display module 100 of the present application, the display module 100 further includes a driver chip IC disposed on a side of the second body 120 away from the first body 110 and a shielding film 122 covering the driver chip IC, and the driver chip IC is bound and connected to a binding terminal 121 in the second body 120 .

[0100] In this embodiment, the first protection portion 31 may cover the bending portion 130 and at least a portion of the second body 120, and in the direction from the bending portion 130 to the second body 120, the first protection portion 31 is spaced apart from the driver chip IC; for example Figure 3 The boundary of the first protection portion 31 does not exceed the boundary of the protective adhesive layer 80. Figure 2 The boundary of the first protection portion 31 may exceed the boundary of the protection glue layer 80 .

[0101] See also Figure 2 and Figure 3 , the first sub-plate 41 at least covers the surface of the first retaining wall 311 away from the display panel 10. Since the first retaining wall 311 and the second retaining wall 312 of the present application are formed in two different curing processes, and the morphology of the first retaining wall 311 away from the cover layer 50 is easily affected by external factors such as equipment and material surface tension, the morphology of the first retaining wall 311 cannot be determined, and technical problems such as interference with the whole machine middle frame are prone to occur. The first sub-plate 41 covers the surface of the first retaining wall 311 away from the cover layer 50, so that the morphology of the first retaining wall 311 is the same as that of the solid plate 40, eliminating the uncertainty of the morphology of the first protection part 31, and avoiding technical problems such as interference between the protection part 30 and the whole machine middle frame.

[0102] It should be noted that the fixing plate 40 of the present application needs to be bonded to the adhesive of the first retaining wall 311 before the first retaining wall 311 is cured, so as to avoid the fixing plate 40 being unable to affect the morphology of the first retaining wall 311 after the first retaining wall 311 is cured; at the same time, the curing process includes pre-curing and main curing, and the fixing plate 40 of the present application can be bonded to the adhesive of the first retaining wall 311 after the first retaining wall 311 is pre-cured.

[0103] In this embodiment, at least one of the two ends of the first sub-plate 41 in the width direction of the first sub-plate 41 is at least partially overlapped with the corresponding second retaining wall 312; Figure 2 and Figure 3 The structure of the first sub-plate 41 can be arranged such that the two ends of the first sub-plate 41 in the width direction can be located within the corresponding second retaining wall 312, or the two ends of the first sub-plate 41 in the width direction can be flush with the two ends of the corresponding second retaining wall 312, that is, the width of the first sub-plate 41 can be less than or equal to the width of the corresponding first protective portion 31.

[0104] In this example, see Figure 7 Since the protective member 30 also includes a second protective portion 32 connected to the first protective portion 31, in order to ensure the morphology of the second protective portion 32, the solid plate 40 of the present application also includes a second sub-plate 42, a third sub-plate 43 and a fourth sub-plate 44 connected to the first sub-plate 41, and the first sub-plate 41, the second sub-plate 42, the third sub-plate 43 and the fourth sub-plate 44 form a closed second annular structure, and the second sub-plate 42, the third sub-plate 43 and the fourth sub-plate 44 are arranged on the surface of the second protective portion 32 away from the display panel 10.

[0105] For example, the first sub-board 41 and the third sub-board 43 correspond to the short sides of the display module 100, and the second sub-board 42 and the fourth sub-board 44 correspond to the long sides of the display module 100, that is, the first sub-board 41 and the third sub-board 43 are arranged in parallel, the second sub-board 42 and the fourth sub-board 44 are arranged in parallel, and the lengths of the first sub-board 41 and the third sub-board 43 are both smaller than the lengths of the second sub-board 42 and the fourth sub-board 44; at the same time, the first sub-board 41 is the area where the bottom frame of the display module 100 is located, the third sub-board 43 is the area where the top frame of the display module 100 is located, and the second sub-board 42 and the fourth sub-board 44 are the areas where the left frame and the right frame of the display module 100 are located, respectively.

[0106] It should be noted that since the amount of adhesive cannot be predicted, the adhesive may overflow onto the surface of the fixing plate 40 after the fixing plate 40 is attached to the protective member 30 , thereby affecting the surface flatness of the fixing plate 40 .

[0107] In this embodiment, at least one of the first sub-board 41, the second sub-board 42, the third sub-board 43 and the fourth sub-board 44 is further provided with a hollow hole HL that at least partially overlaps with the first retaining wall 311 in the corresponding protection portion, and the hollow hole HL penetrates the corresponding sub-board along the thickness direction of the display panel 10.

[0108] For example, see Figure 7 and Figure 8In the present application, hollow holes HL can be set on the first sub-plate 41, the second sub-plate 42, the third sub-plate 43 and the fourth sub-plate 44 of the fixed plate 40 to improve the technical problem of glue overflow.

[0109] In this embodiment, the distance L1 between two adjacent hollow holes HL on the first sub-plate 41 and the third sub-plate 43 is smaller than the distance L2 between two adjacent hollow holes HL on the second sub-plate 42 and the fourth sub-plate 44 .

[0110] Since the first sub-board 41 and the third sub-board 43 correspond to the short side of the display module 100, when the number of hollow holes HL opened on the first sub-board 41 and the third sub-board 43 is too large, the adhesive area between the glue material on the middle frame corresponding to the first sub-board 41 and the third sub-board 43 and the solid plate 40 will be reduced, while the second sub-board 42 and the fourth sub-board 44 correspond to the long side of the display module 100. Even if the number of hollow holes HL is too large, the adhesive area between the glue material on the middle frame corresponding to the second sub-board 42 and the fourth sub-board 44 and the solid plate 40 is still within the design range. Therefore, in the present application, the spacing L2 of the hollow holes HL on the second sub-board 42 and the fourth sub-board 44 can be greater than the spacing L1 between two adjacent hollow holes HL on the first sub-board 41 and the third sub-board 43.

[0111] In this embodiment, the diameter of the hollow hole HL is less than or equal to half of the width of the fixing plate 40 at the location of the hollow hole HL.

[0112] In the present embodiment, in order to avoid a reduction in the adhesive area between the glue material on the middle frame and the fixing plate 40, in the sub-plates of the fixing plate 40, the spacing between two adjacent hollow holes HL in the middle area is greater than the spacing between two adjacent hollow holes HL in the edge area; for example, in the first sub-plate 41, the second sub-plate 42, the third sub-plate 43 and the fourth sub-plate 44, the hollow holes HL are mainly concentrated in the edge areas of the corresponding sub-plates.

[0113] It should be noted that since the impact resistance of the area where the bending portion 130 is located is relatively poor, the present application can only set the first protection portion 31 and the corresponding first sub-board 41 in the lower frame area of ​​the display module 100, that is, the hollow hole HL can be only set on the first sub-board 41.

[0114] See also Figure 5 The corner sub-portion 522 of the cover layer 50 is a Gaussian surface, and the flexible material corresponding to the corner sub-portion 522 will be subjected to forces in all directions, causing wrinkles to easily appear in this area; the present application can increase the material of the protective member 30 corresponding to the corner sub-portion 522, that is, the width of the protective member 30 in the corner sub-portion 522 is greater than the width of the protective member 30 in the non-corner sub-portion 522, thereby increasing the Young's modulus of the protective member 30 in the corner sub-portion 522, so as to fix the Gaussian surface, reduce the degree of freedom of deformation in this area, and improve the reliability of the product.

[0115] See also Figure 7 and Figure 8 The solid plate 40 also includes a corner sub-plate 40a connecting the first sub-plate 41, the second sub-plate 42, the third sub-plate 43 and the fourth sub-plate 44. The corner sub-plate 40a is arranged corresponding to the corner sub-portion 522, and the width of the corner sub-plate 40a is greater than the width of the first sub-plate 41, the second sub-plate 42, the third sub-plate 43 and the fourth sub-plate 44.

[0116] In this embodiment, in order to adapt to the material of the protection member 30 corresponding to the corner sub-portion 522 , the present application increases the width of the corner sub-plate 40 a so that the morphology of each area of ​​the protection member 30 is the same as that of the fixing plate 40 .

[0117] In this embodiment, the surface of the cover layer 50 close to the first protection portion 31 corresponding to the fixing plate 40 is parallel to the surface of the fixing plate 40 away from the cover layer 50, for example Figure 2 and Figure 3 at the same time, the surface of the solid plate 40 away from the cover layer 50 on one side may also be the same as the corresponding middle frame morphology to avoid interference with the middle frame.

[0118] In this embodiment, the thickness of the fixing plate 40 is smaller than the thickness of the protective member; for example, the thickness of the fixing plate 40 may be greater than or equal to 0.01 mm and less than or equal to 2 mm.

[0119] In this embodiment, the material of the fixing plate 40 may include one of metal, glass, polymethyl methacrylate, polycarbonate, and polyethylene terephthalate.

[0120] The present application also proposes a display device, which includes a middle frame and the above-mentioned display module, and the protective member and the solid plate can be arranged in the area between the middle frame and the display module to improve the impact resistance of the display device in the edge area. The display device can include electronic devices such as mobile phones, televisions, and laptops.

[0121] 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.

[0122] The above is a detailed introduction to a display module and a display device provided in the embodiments of the present application. Specific examples are used herein 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 solutions and core ideas 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. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display module, characterized in that: include: Composite support layer; The display panel comprises a first body, a second body and a bending portion connecting the first body and the second body, wherein the first body is arranged on a first side of the composite support layer, and the second body is arranged on a second side of the composite support layer opposite to the first side; a protective member, comprising a first protective portion, the first protective portion being located on a side of the bent portion away from the composite supporting layer and extending to a side of a portion of the second body away from the first body; and The fixing plate comprises a first sub-plate, wherein the first sub-plate is arranged on a surface of the first protection portion away from the first body, and the Young's modulus of the fixing plate is greater than the Young's modulus of the protection member.

2. The display module according to claim 1, characterized in that: The first protection portion includes a first blocking wall and second blocking walls arranged on both sides of the first blocking wall, and the first sub-plate at least covers a surface of the first blocking wall on a side away from the display panel.

3. The display module according to claim 2, characterized in that: At least one of the two ends of the first sub-plate in the width direction of the first sub-plate is at least partially overlapped with the corresponding second retaining wall.

4. The display module according to claim 2, characterized in that: The first sub-board is further provided with a hollow hole at least partially overlapping with the first retaining wall in the first protection portion, and the hollow hole penetrates the first sub-board along the thickness direction of the display panel.

5. The display module according to claim 2, characterized in that: The protection member further includes a second protection portion connected to the first protection portion, the second protection portion includes the first retaining wall and the second retaining walls provided on both sides of the first retaining wall, the first protection portion and the second protection portion form a closed first annular structure, and the first annular structure covers the periphery of the display panel; Among them, the solid plate also includes a second sub-plate, a third sub-plate and a fourth sub-plate connected to the first sub-plate, the first sub-plate, the second sub-plate, the third sub-plate and the fourth sub-plate form a closed second ring structure, and the second sub-plate, the third sub-plate and the fourth sub-plate are arranged on the surface of the second protection part away from the display panel.

6. The display module according to claim 5, characterized in that: At least one of the first sub-board, the second sub-board, the third sub-board and the fourth sub-board is also provided with a hollow hole that at least partially overlaps with the first retaining wall in the corresponding protection part, and the hollow hole penetrates the corresponding sub-board along the thickness direction of the display panel.

7. The display module according to claim 6, characterized in that: The first sub-board and the third sub-board are arranged in parallel, the second sub-board and the fourth sub-board are arranged in parallel, and the lengths of the first sub-board and the third sub-board are both shorter than the lengths of the second sub-board and the fourth sub-board; Wherein, the distance between two adjacent hollow holes on the first sub-board and the third sub-board is smaller than the distance between two adjacent hollow holes on the second sub-board and the fourth sub-board.

8. The display module according to claim 4 or 6, characterized in that: The diameter of the hollow hole is less than or equal to half of the width of the fixing plate at the location of the hollow hole.

9. The display module according to claim 4 or 6, characterized in that: In the sub-plate of the fixed plate, a distance between two adjacent hollow holes in the middle area is greater than a distance between two adjacent hollow holes in the edge area.

10. The display module according to claim 5, characterized in that: The fixed plate also includes a corner sub-plate connecting the first sub-plate, the second sub-plate, the third sub-plate and the fourth sub-plate, and the width of the corner sub-plate is greater than the width of the first sub-plate, the second sub-plate, the third sub-plate and the fourth sub-plate.

11. The display module according to claim 2, characterized in that: The display module further comprises a cover layer disposed on a side of the first body away from the composite support layer, the cover layer comprising a planar portion and a curved portion located outside the planar portion, and the curved portion comprises a plurality of side sub-portions located around the planar portion and a corner sub-portion located between two adjacent side sub-portions; The first protection portion is connected to at least a surface of the bending portion away from the composite support layer, the side sub-portion corresponding to the bending portion, and the adjacent corner sub-portion.

12. The display module according to claim 11, characterized in that: A surface of the cover layer close to the first protection portion corresponding to the fixing plate is parallel to a surface of the fixing plate away from the cover layer.

13. The display module according to claim 11, characterized in that: Compensation glue is also filled between the cover plate layer and the bending portion, and the gelation rate of the compensation glue is different from the gelation rate of the first retaining wall.

14. The display module according to any one of claims 2 to 7 and 10 to 13, characterized in that: The protection member further comprises a third protection portion connected to the first retaining wall, and at least a portion of the third protection portion is located in the enclosed space between the bending portion and the composite support layer; The gelation rate of the third protection portion is different from the gelation rate of the first retaining wall.

15. The display module according to any one of claims 2 to 7 and 10 to 13, characterized in that: The second retaining wall includes a first sub-portion and a second sub-portion, the first sub-portion is arranged close to the central area of ​​the display module, and the second sub-portion is arranged away from the central area of ​​the display module; Wherein, the Young's modulus of the first sub-section and the second sub-section are both greater than or equal to the Young's modulus of the first retaining wall.

16. The display module according to claim 15, characterized in that: The width of the first sub-portion close to the display panel is greater than or equal to the width of the first sub-portion away from the display panel, and the width of the second sub-portion close to the display panel is greater than or equal to the width of the second sub-portion away from the display panel.

17. The display module according to claim 15, characterized in that: The first sub-section and the second sub-section each include a plurality of retaining wall units connected along a thickness direction of the second retaining wall, and outer walls of the retaining wall units are convex.

18. The display module according to any one of claims 1 to 7 and 10 to 13, characterized in that: The thickness of the fixing plate is smaller than the thickness of the protection member.

19. The display module according to any one of claims 1 to 7 and 10 to 13, characterized in that: The material of the fixing plate includes one of metal, glass, polymethyl methacrylate, polycarbonate, and polyethylene terephthalate.

20. A display device, characterized in that: The display device comprises the display module and the middle frame according to any one of claims 1 to 19, and the protective member and the fixing plate are arranged in a region between the middle frame and the display panel.

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