CN115145071B - Display module and display device - Google Patents

Display module and display device Download PDF

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Publication number
CN115145071B
CN115145071B CN202110341480.8A CN202110341480A CN115145071B CN 115145071 B CN115145071 B CN 115145071B CN 202110341480 A CN202110341480 A CN 202110341480A CN 115145071 B CN115145071 B CN 115145071B
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CN
China
Prior art keywords
optical film
notch
plate
limiting
display module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110341480.8A
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Chinese (zh)
Other versions
CN115145071A (en
Inventor
王大可
李天马
李亮
刘晓莉
席涛
张齐钧
丁雪枫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by BOE Technology Group Co Ltd, Chengdu BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to CN202311245068.1A priority Critical patent/CN117111360A/en
Priority to CN202110341480.8A priority patent/CN115145071B/en
Publication of CN115145071A publication Critical patent/CN115145071A/en
Application granted granted Critical
Publication of CN115145071B publication Critical patent/CN115145071B/en
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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides

Abstract

The embodiment of the application provides a display module and a display device, wherein the display module comprises a back plate and an optical film assembly, the back plate comprises a bottom plate and a side plate positioned at the periphery of the bottom plate, the optical film assembly is arranged on one side of the bottom plate in a lamination manner, the side plate is positioned on the periphery of the optical film assembly, and a limiting piece is arranged on the side plate and is fixed with the periphery of the optical film assembly so as to limit the relative position of the optical film assembly and the back plate; the width of the frame is effectively reduced, and the narrow frame design is realized.

Description

Display module and display device
Technical Field
The application relates to the technical field of display, in particular to a display module and a display device.
Background
In recent years, with the development of display technology, the application range of display devices is expanding, such as smart phones, smart bracelets, smart televisions, vehicle-mounted displays, and the like. Along with the heat of the automobile market, the demands of the large-screen central control and the instrument panel are increasingly increased so as to meet the demands of people on the automobile. Nowadays, vehicle-mounted touch display is gradually increased in size, definition, narrow frame and the like.
At present, the frame is required to be narrower and narrower, the traditional structural design cannot meet the customer requirements, and particularly, the requirements on vehicle-mounted narrow-frame thin module products are higher and higher, however, the frame structure frame in the prior art is generally wider and thicker, so that the problem of larger frame width is needed to be solved at present so as to meet the use requirements of users.
Disclosure of Invention
The embodiment of the application provides a display module and a display device, which effectively reduce the width of a frame and realize narrow frame design.
In a first aspect, an embodiment of the present application provides a display module, including a back plate and an optical film assembly, where the back plate includes a bottom plate and a side plate located at a periphery of the bottom plate, the optical film assembly is stacked on one side of the bottom plate, the side plate is located at a periphery of the optical film assembly, and a limiting member is disposed on the side plate, and is fixed with a periphery of the optical film assembly, so as to define a relative position between the optical film assembly and the back plate.
In an exemplary embodiment, the limiting member is a fixing notch formed on the side plate, and at least part of the periphery of the optical film assembly is located in the fixing notch and is fixed with the inner wall of the fixing notch.
In an exemplary embodiment, the optical film assembly includes a first optical film layer, the side plate includes a first plate body, the fixing notch includes a first notch disposed on the first plate body, a first extension portion is disposed on a side of the first optical film layer, which is close to the first notch, and the first extension portion is disposed in the first notch and is fixed with an inner wall of the first notch.
In an exemplary embodiment, a first glue layer is disposed between the first extension and the first notch inner wall.
In an exemplary embodiment, the side plate further includes a second plate body opposite to the first plate body, a limiting notch is formed in the second plate body, a first limiting portion is formed on one side, close to the limiting notch, of the first optical film layer, and the first limiting portion is located in the limiting notch.
In an exemplary embodiment, the optical film assembly further includes a second optical film layer stacked on a side of the first optical film layer away from the bottom plate, the side plate further includes a third plate body cross-connected with the first plate body, the fixing notch further includes a second notch disposed on the third plate body, a second extension portion is disposed on a side of the second optical film layer close to the second notch, and the second extension portion is located in the second notch and is fixed with an inner wall of the second notch.
In an exemplary embodiment, a second glue layer is disposed between the second extension and the second notch inner wall.
In an exemplary embodiment, in a direction perpendicular to the bottom plate, the bottom wall of the second notch is higher than the bottom wall of the first notch, and a height difference between the bottom wall of the second notch and the bottom wall of the first notch is greater than or equal to the thickness of the first optical film layer.
In an exemplary embodiment, a second limiting portion is disposed on a side, close to the first notch, of the second optical film layer, and the second limiting portion is located in the first notch.
In an exemplary embodiment, the side plate further includes a second plate body opposite to the first plate body, a limiting notch is formed in the second plate body, a third limiting portion is formed in one side, close to the limiting notch, of the second optical film layer, and the third limiting portion is located in the limiting notch.
In an exemplary embodiment, the display module further includes a middle frame located at a peripheral side of the side plate, a boss portion is disposed at a side of the middle frame, which is close to the side plate, the optical film assembly further includes a third optical film layer stacked and disposed at a side, away from the bottom plate, of the second optical film layer, the third optical film layer is provided with a third extension portion, the boss portion is located at a side, away from the bottom plate, of the third extension portion, and the third extension portion is fixed with the boss portion.
In an exemplary embodiment, a third glue layer is provided between the third extension portion and the boss portion.
In an exemplary embodiment, the third extension portion includes a first sub-extension portion located on a side of the third optical film layer near the first notch and a second sub-extension portion located on a side of the third optical film layer near the second notch, the boss portion includes at least an L-shaped corner portion, and the first sub-extension portion and the second sub-extension portion are respectively fixed to two sides of the corner portion.
In an exemplary embodiment, the side plate further includes a second plate body opposite to the first plate body, a limiting notch is formed in the second plate body, a fourth limiting portion is formed in one side, close to the limiting notch, of the third optical film layer, and the fourth limiting portion is located in the limiting notch.
In an exemplary embodiment, the display module further includes a middle frame located at the periphery of the side plate, and an expansion notch is disposed on the middle frame and corresponds to the limit notch.
In an exemplary embodiment, a light shielding plate is disposed on the expansion gap.
In an exemplary embodiment, the optical film assembly further comprises a light guide plate, the light guide plate is arranged between the optical film assembly and the bottom plate, a limiting boss is arranged on one side, close to the optical film assembly, of the light guide plate, a limiting hole is correspondingly formed in the optical film assembly, and the limiting boss is matched with the limiting hole to limit the relative position of the optical film assembly and the light guide plate.
In an exemplary embodiment, the light guide plate is arranged between the optical film assembly and the bottom plate, the side plate is positioned at the periphery side of the light guide plate, a light bar is arranged between the periphery of the light guide plate and the side plate, and the surface of the light bar, which is far away from the bottom plate, is lower than the surface of the optical film assembly, which is close to the bottom plate, in the direction perpendicular to the bottom plate; or the surface of the side, far away from the bottom plate, of the light bar is flush with the surface of the side, close to the bottom plate, of the optical film assembly.
In a second aspect, an embodiment of the present application further provides a display apparatus, including the foregoing display module.
The application provides a display module and a display device, wherein an optical film component is fixed on a side plate of a back plate, and a fixing structure for fixing the optical film component is not required to be arranged on a middle frame, so that the width of a frame can be reduced, and the design of a narrow frame is realized.
Of course, it is not necessary for any one product or method of practicing the application to achieve all of the advantages set forth above at the same time. Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of embodiments of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate and do not limit the application. The shapes and sizes of the various components in the drawings are not to scale, and are intended to illustrate the present application only.
FIG. 1 is a schematic diagram of a display module;
FIG. 2 is a schematic diagram of a display module;
FIG. 3 is a top view of a display module;
fig. 4 is a top view of a display module according to an embodiment of the application;
FIG. 5 is a partial enlarged view of a back plate in a display module according to an embodiment of the present application;
fig. 6 is a top view of a back plate in a display module according to an embodiment of the application;
FIG. 7 is an enlarged view of a portion of a back plate in a display module according to an embodiment of the present application;
fig. 8 is a cross-sectional view of a display module according to an embodiment of the application;
fig. 9 is a second cross-sectional view of the display module according to the embodiment of the application;
fig. 10 is a schematic diagram of a first optical film layer in a display module according to an embodiment of the application;
fig. 11 is a third cross-sectional view of the display module according to the embodiment of the application;
FIG. 12 is a schematic diagram of a second optical film layer in a display module according to an embodiment of the present application;
FIG. 13 is a schematic diagram of a third optical film layer in a display module according to an embodiment of the application;
fig. 14 is a cross-sectional view of a display module according to an embodiment of the present application;
fig. 15 is a partial enlarged view of a light guide plate in a display module according to an embodiment of the application.
Detailed Description
The following describes in further detail the embodiments of the present application with reference to the drawings and examples. The following examples are illustrative of the application and are not intended to limit the scope of the application. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be arbitrarily combined with each other.
Fig. 1 is a schematic structural diagram of a display module. As shown in fig. 1, the display module includes a back plate 1, a light guide plate 2, an optical film assembly 3 and a middle frame 4, wherein the back plate 1 includes a bottom plate 101 and a side plate 102, and the bottom plate 101 and the side plate 102 form a containing cavity; the light guide plate 2 and the optical film material component 3 are positioned in the accommodating cavity, and the optical film material component 3 is positioned at one side of the light guide plate 2 far away from the bottom plate 11; the side plate 102 is located the week side of light guide plate 2 and optical film material subassembly 3, and center 4 is located the week side of side plate 102, and center 4 is close to side plate 102 one side and is provided with boss portion 8, and boss portion 8 is located optical film material subassembly 3 and is kept away from bottom plate 101 one side, and boss portion 8 is used for supporting array substrate. One end of the side plate 102 away from the bottom plate 101 abuts against the boss portion 8 to support the boss portion 8, preventing the boss portion 8 from collapsing.
Fig. 2 is a schematic structural diagram of a display module. As shown in fig. 2, the display module includes a back plate 1, a light guide plate 2, an optical film assembly 3 and a middle frame 4, wherein the back plate 1 includes a bottom plate 101 and a side plate 102, and the bottom plate 101 and the side plate 102 form a containing cavity; the light guide plate 2 is positioned in the accommodating cavity; the optical film material component 3 is positioned in the accommodating cavity and is positioned at one side of the light guide plate 2 far away from the bottom plate 11; the middle frame 4 is located the week side of curb plate 102, and middle frame 4 is provided with boss portion 8 near curb plate 102 one side, and boss portion 8 is located optical film material subassembly 3 and is kept away from bottom plate 101 one side, and boss portion 8 is used for supporting array substrate. A space is provided between the boss portion 8 and one end of the side plate 102 remote from the bottom plate 101, and this space can be used as an expansion space for the optical film assembly 3.
Fig. 3 is a top view of a display module. Taking the structure shown in fig. 1 or fig. 2 as an example of the display module. As shown in fig. 3, the display module includes a middle frame, the middle frame is rectangular, the middle frame includes two first short sides 100 and second short sides 200 that are oppositely disposed, and a first long side and a second long side that are located between the first short sides 100 and the second short sides 200 and are oppositely disposed, and the optical film assembly in the display module is fixed with the middle frame so as to define the position of the optical film assembly. When the fixing position of the optical film assembly and the middle frame is set at the first short side 100, the second short side 200 is designed to be a narrow frame, and the optical film assembly does not have enough expansion space at the second short side 200. When the fixed position of the optical film assembly and the middle frame is arranged in the middle of the first long side and the second long side, the second short side 200 is designed to be a narrow frame, the optical film assembly contracts at high temperature, and the risk of bright edges with a large visual angle exists at the second short side 200. When the fixed position of the optical film assembly and the middle frame is arranged at the second short side 200, the second short side 200 is designed to be a narrow frame, and the limiting step used for fixing the optical film assembly and arranged on the second short side 200 can see the edge of the optical film assembly under a large visual angle, so that the display effect is affected.
The embodiment of the application provides a display module, which comprises a back plate and an optical film assembly, wherein the back plate comprises a bottom plate and a side plate positioned at the periphery of the bottom plate, the optical film assembly is arranged on one side of the bottom plate in a lamination manner, the side plate is positioned on the periphery of the optical film assembly, and a limiting piece is arranged on the side plate and is fixed with the periphery of the optical film assembly so as to limit the relative position of the optical film assembly and the back plate.
Fig. 4 is a top view of a display module according to an embodiment of the application; FIG. 5 is a partial enlarged view of a back plate in a display module according to an embodiment of the present application; fig. 6 is a top view of a back plate in a display module according to an embodiment of the application; fig. 7 is an enlarged view of a portion of a back plate in a display module according to an embodiment of the application. Taking fig. 5 as an enlarged view of the back plate at a in fig. 4 and fig. 7 as an enlarged view at b in fig. 6 as an illustration of the structure of the display module according to the embodiment of the present application. As shown in fig. 4, 5, 6 and 7, the display module of the embodiment of the application includes a back plate 1 and an optical film assembly 3, where the back plate 1 includes a bottom plate 101 and a side plate 102 located at the periphery of the bottom plate 101, and the side plate 102 is disposed around the periphery of the bottom plate 101. The bottom plate 101 and the side plate 102 form a receiving chamber. The optical film assembly 3 is located in the accommodating cavity, the optical film assembly 3 is stacked on one side of the bottom plate 101, and the optical film assembly 3 and the side plate 102 are located on the same side of the bottom plate 101. The side plate 102 is located at the peripheral side of the optical film assembly 3, and is disposed around the periphery of the optical film assembly 3. The inner wall of the side plate 102 is provided with a limiting piece 5, and the limiting piece 5 is fixed with at least part of the periphery of the optical film assembly 3 so as to limit the relative position of the optical film assembly 3 and the backboard 1. The inner wall of the side plate 102 refers to a side of the side plate 102 facing the periphery of the optical film assembly 3.
According to the display module provided by the embodiment of the application, the optical film assembly 3 is fixed on the side plate 102 of the backboard 1, and a fixing structure for fixing the optical film assembly 3 is not required to be arranged on the middle frame, so that the frame width can be reduced, and the narrow frame design is realized.
Fig. 8 is a cross-sectional view of a display module according to an embodiment of the application. The structure of the display module according to the embodiment of the present application is illustrated by taking the cross-sectional view A-A of fig. 4 as an example. In an exemplary embodiment, as shown in fig. 6, 7 and 8, the limiting member 5 is a fixing notch disposed on the side plate 102, and at least part of the periphery of the optical film assembly 3 is located in the fixing notch and is fixed with the inner wall of the fixing notch. The fixing notch may be a groove in which the side plate 102 is recessed along a direction away from the periphery of the optical film assembly 3; alternatively, the securing notch may be a perforation through the side plate 102.
In an exemplary embodiment, the accommodating chamber surrounded by the bottom plate 101 and the side plate 102 of the back plate 1 is box-shaped with one side open, for example, the shape of the bottom plate 101 is rectangular, and the shape of the accommodating chamber is rectangular.
In an exemplary embodiment, as shown in fig. 4, 5, 7 and 8, the bottom plate 101 is rectangular, and the side plate 102 includes a first plate body 10, and the first plate body 10 is located at one short side of the bottom plate 101. The optical film assembly 3 comprises a first optical film 301, the fixing notch comprises a first notch 501 arranged on the first plate 10, a first extending portion 3011 is arranged on one side, close to the first notch 501, of the first optical film 301, the first extending portion 3011 is located in the first notch 501 and is fixed with the inner wall of the first notch 501, and therefore the fixing of the first optical film 301 and the side plate 102 is achieved, and the relative position of the first optical film 301 and the back plate 1 is limited.
In an exemplary embodiment, as shown in fig. 5, a first adhesive layer 6 is disposed between the first extension 3011 and the inner wall of the first notch 501, where the first adhesive layer 6 is located on the bottom wall of the first notch 501, and the first adhesive layer 6 is used to adhere the first extension 3011 to the inner wall of the first notch 501. The first adhesive layer 6 may be a double sided adhesive. The width of the first adhesive layer 6 is smaller than or equal to the width of the bottom wall of the first notch 501. The thickness of the second glue layer 7 may be 0.16mm.
Fig. 9 is a second cross-sectional view of the display module according to the embodiment of the application. Fig. 9 is a cross-sectional view at C-C in fig. 4 for illustrating the structure of the back plate in the display module according to the embodiment of the application. In an exemplary embodiment, as shown in fig. 4 and 9, the side plate 102 further includes a second plate body 20 disposed opposite to the first plate body 10, the second plate body 20 being located at the other short side of the bottom plate 101. The second plate body 20 is provided with a limiting notch 7, one side, close to the limiting notch 7, of the first optical film layer 301 is provided with a first limiting part 3012, the first limiting part 3012 is located in the limiting notch 7, and the limiting notch 7 is used for limiting the relative position of the first optical film layer 301 and the backboard 1 in the y-axis direction; the y-axis direction of the back plate 1 is a direction parallel to the short side of the bottom plate 101.
Fig. 10 is a schematic diagram of a first optical film layer in a display module according to an embodiment of the application. In one exemplary embodiment, as shown in fig. 10, the first optical film 301 is rectangular, the first optical film 301 has a first side 3013 and a second side 3014 opposite to each other, the first side 3013 is a side of the first optical film 301 near the first notch 501, and the second side 3014 is a side of the first optical film 301 near the limiting notch 7. The first side 3013 of the first optical film layer 301 is provided with a first extension 3011, the first extension 3011 protruding from the first side 3013; the second side 3014 of the first optical film layer 301 is provided with a first spacing portion 3012; the first spacing portion 3012 projects from the second side 3014.
Fig. 11 is a third cross-sectional view of the display module according to the embodiment of the application. Taking fig. 11 as a cross-sectional view at B-B in fig. 4 as an example, the structure of the back plate in the display module according to the embodiment of the application is illustrated. As shown in fig. 4, 5, 7 and 11, the optical film assembly 3 further includes a second optical film layer 302 stacked on a side of the first optical film layer 301 away from the bottom plate 101, and the side plate 102 further includes a third plate body 30 cross-connected with the first plate body 10. The third plate 30 is positioned at a long side of the bottom plate 101, and two ends of the third plate 30 are vertically connected to the first plate 10 and the second plate 20, respectively. The fixing notch further includes a second notch 502 disposed on the third plate body 30, a second extension portion 3021 is disposed on a side of the second optical film layer 302, which is close to the second notch 502, and the second extension portion 3021 is located in the second notch 502 and is fixed to an inner wall of the second notch 502, so as to fix the second optical film layer 302 and the side plate 102, and further limit a relative position between the second optical film layer 302 and the back plate 1.
In an exemplary embodiment, a second adhesive layer 7 is disposed between the second extension 3021 and the inner wall of the second notch 502, the second adhesive layer 7 is located on the bottom wall of the second notch 502, and the second adhesive layer 7 is used to adhere the second extension 3021 to the inner wall of the second notch 502. The second adhesive layer 7 may be a double-sided adhesive tape. The width of the second adhesive layer 7 is smaller than or equal to the width of the bottom wall of the second notch 502. The thickness of the second glue layer 7 may be 0.16mm.
In an exemplary embodiment, in a direction perpendicular to the base plate 101, the bottom wall of the second notch 502 is higher than the bottom wall of the first notch 501, and a difference in height between the bottom wall of the second notch 502 and the bottom wall of the first notch 501 is greater than or equal to the thickness of the first optical film layer 301, so that the second optical film layer 302 can contact with the bottom wall of the second notch 502.
In an exemplary embodiment, a second limiting portion 3022 is disposed on a side of the second optical film layer 302 near the first notch 501, and the second limiting portion 3022 is located in the first notch 501 to limit a relative position of the second optical film layer 302 and the back plate 1 in the y-axis direction.
In an exemplary embodiment, the side plate 102 further includes a second plate body 20 disposed opposite the first plate body 10, the second plate body 20 being located at the other short side of the bottom plate 101. The second plate 20 is provided with a limiting notch 7, and a third limiting part 3023 is arranged on one side, close to the limiting notch 7, of the second optical film 302, and the third limiting part 3023 is located in the limiting notch 7 to limit the relative position of the second optical film 302 and the back plate 1 in the y-axis direction.
Fig. 12 is a schematic diagram of a second optical film layer in a display module according to an embodiment of the application. In an exemplary embodiment, as shown in fig. 12, the second optical film layer 302 is rectangular, and the second optical film layer 302 has a second side 3025, a third side 3026, and a first side 3024 disposed opposite to the second side 3025 and between the third side 3026, where the first side 3024 is a side near the second notch 502, and a second extension 3021 is disposed on the first side 3024, and the second extension 3021 protrudes out of the first side 3024; the second side 3025 is a side close to the limiting notch 7, the second side 3025 is provided with a third limiting portion 3023, and the third limiting portion 3023 protrudes out of the second side 3025; the third side 3026 is a side close to the first notch 501, the third side 3026 is provided with a second limiting portion 3022, and the second limiting portion 3022 protrudes out of the third side 3026.
In an exemplary embodiment, as shown in fig. 5, 8 and 11, the display module further includes a middle frame 4 located on a peripheral side of the side plate 102, a boss portion 8 is disposed on a side of the middle frame 4 close to the side plate 102, the optical film assembly 3 further includes a third optical film 303 stacked on a side of the second optical film 302 away from the bottom plate 101, the third optical film 303 is provided with a third extension portion, the boss portion 8 is located on a side of the third extension portion away from the bottom plate 101, and the third extension portion is fixed with the boss portion 8, so as to limit a relative position between the third optical film 303 and the back plate 1.
In an exemplary embodiment, a third adhesive layer 9 is disposed between the third extension portion and the boss portion 8, the third adhesive layer 9 is located on a surface of the boss portion 8 near a side of the third extension portion, and the third adhesive layer 9 is used to bond the third extension portion to the boss portion 8. The third adhesive layer 9 may be a double-sided adhesive tape.
Fig. 13 is a schematic diagram of a third optical film layer in a display module according to an embodiment of the application. As shown in fig. 5 and 13, in an exemplary embodiment, the third extension portion includes a first sub-extension portion 3031 located on a side of the third optical film 303 near the first notch 501 and a second sub-extension portion 3032 located on a side of the third optical film 303 near the second notch 502, the boss portion 8 includes at least an L-shaped corner portion, one side of the L-shaped corner portion is disposed opposite to the first sub-extension portion 3031, the other side of the L-shaped corner portion is disposed opposite to the second sub-extension portion 3032, the third adhesive layer 9 is L-shaped, the first sub-extension portion 3031 is fixed to one side of the L-shaped corner portion by the one side of the third adhesive layer 9, and the second sub-extension portion 3032 is fixed to the other side of the L-shaped corner portion by the other side of the third adhesive layer 9.
In an exemplary embodiment, the side plate 102 further includes a second plate body 20 disposed opposite the first plate body 10, the second plate body 20 being located at the other short side of the bottom plate 101. The second plate 20 is provided with a limiting notch 7, and a fourth limiting portion 3033 is arranged on one side, close to the limiting notch 7, of the third optical film 303, and the fourth limiting portion 3033 is located in the limiting notch 7 to limit the relative position of the third optical film 303 and the backboard 1 in the y-axis direction.
As shown in fig. 13, in an exemplary embodiment, the third optical film 303 is rectangular, and the third optical film 303 has a second side 3035, a third side 3036, and a first side 3034 disposed between the second side 3035 and the third side 3036, the first side 3034 is a side near the second notch 502, the first side 3034 is provided with a second sub extension 3032, and the second sub extension 3032 protrudes from the first side 3034; the second side 3035 is a side close to the limiting notch 7, the second side 3035 is provided with a fourth limiting part 3033, and the fourth limiting part 3033 protrudes out of the second side 3035; the third side 3036 is a side close to the first notch 501, and the third side 3036 is provided with a first sub extension 3021, and the first sub extension 3021 protrudes out of the third side 3026.
In one exemplary embodiment, the optical film assembly 3 includes at least one of a diffusion film, a prism film, a composite film, and an incremental film. For example, the first optical film layer 301 may be a diffusion film, the second optical film layer 302 may be a prism film, and the third optical film layer 303 may be an incremental film.
In an exemplary embodiment, as shown in fig. 9, an expansion notch is disposed on the middle frame 4, where the expansion notch corresponds to the limit notch 7, and the expansion notch can provide an expansion space in the X-axis direction for the optical film assembly 3. The X-axis direction is a direction parallel to the long side of the bottom plate 101.
In an exemplary embodiment, as shown in fig. 9, a light shielding plate 50 is provided on the expansion gap, and the light shielding plate 50 can prevent light leakage and foreign matter from entering into the back plate 1 at the expansion gap.
Fig. 15 is a partial enlarged view of a light guide plate in a display module according to an embodiment of the application. The structure of the display module according to the embodiment of the present application will be described with reference to fig. 15, which is a partial enlarged view of the light guide plate at c in fig. 4. In an exemplary embodiment, as shown in fig. 15, the display module further includes a light guide plate 2, where the light guide plate 2 is located in the accommodating cavity, the light guide plate 2 is stacked between the optical film assembly 3 and the bottom plate 101, a limiting boss 201 is disposed on a surface of the light guide plate 2 near one side of the optical film assembly 3, a limiting hole 304 is correspondingly disposed on the optical film assembly 3, and the limiting boss 201 cooperates with the limiting hole 304 to limit a relative position of the optical film assembly 3 and the light guide plate 2.
Fig. 14 is a cross-sectional view of a display module according to an embodiment of the application. Fig. 14 is a sectional view taken at D-D in fig. 4 for illustrating the structure of the back plate in the display module according to the embodiment of the present application. In an exemplary embodiment, as shown in fig. 14, the side plate 102 is located at a peripheral side of the light guide plate 2, and the light bar 40 is disposed between the peripheral side of the light guide plate 2 and the side plate 102, and the light bar 40 is located at a side of the side plate 102 close to the light guide plate 2. In the direction perpendicular to the bottom plate 101, the surface of the light bar 40 on the side far away from the bottom plate 101 is lower than the surface of the optical film assembly 3 on the side close to the bottom plate 101; alternatively, the surface of the light bar 40 on the side far from the bottom plate 101 is flush with the surface of the optical film assembly 3 on the side near to the bottom plate 101. Thereby leading the light bar 40 to avoid the expansion direction of the optical film assembly 3 and reserving an expansion space for the optical film assembly 3.
It should be noted that, the backlight module of the embodiment is more suitable for a vehicle-mounted display device, such as a display device of an electric vehicle.
The embodiment of the disclosure also provides a display device, which comprises the display module. The display device includes, for example, a mobile phone, a tablet computer, a smart wearable product (smart watch, bracelet), a Personal Digital Assistant (PDA), a car-mounted computer, and the like. The embodiment of the present application does not particularly limit the specific form of the above-described folding display device.
In the description of the embodiments of the present application, it should be understood that the terms "middle," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Although the embodiments of the present application are described above, the embodiments are only used for facilitating understanding of the present application, and are not intended to limit the present application. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is to be determined by the appended claims.

Claims (16)

1. The display module is characterized by comprising a back plate and an optical film assembly, wherein the back plate comprises a bottom plate and side plates positioned on the periphery of the bottom plate, the optical film assembly is arranged on one side of the bottom plate in a lamination mode, the side plates are positioned on the periphery of the optical film assembly, and limiting pieces are arranged on the side plates and are fixed with the periphery of the optical film assembly so as to limit the relative positions of the optical film assembly and the back plate; the limiting piece is a fixing notch arranged on the side plate, and at least part of the periphery of the optical film component is positioned in the fixing notch and is fixed with the inner wall of the fixing notch; the optical film assembly comprises a first optical film layer, the side plate comprises a first plate body, the fixing notch comprises a first notch arranged on the first plate body, a first extension part is arranged on one side, close to the first notch, of the first optical film layer, and the first extension part is positioned in the first notch and is fixed with the inner wall of the first notch; the optical film assembly further comprises a second optical film layer which is arranged on one side of the first optical film layer away from the bottom plate, the side plate further comprises a third plate body which is in cross connection with the first plate body, the fixed notch further comprises a second notch which is arranged on the third plate body, one side, close to the second notch, of the second optical film layer is provided with a second extension part, and the second extension part is positioned in the second notch and is fixed with the inner wall of the second notch.
2. The display module assembly of claim 1, wherein a first glue layer is disposed between the first extension and the first notch inner wall.
3. The display module assembly of claim 1, wherein the side plate further comprises a second plate body opposite to the first plate body, a limiting notch is formed in the second plate body, a first limiting portion is arranged on one side, close to the limiting notch, of the first optical film layer, and the first limiting portion is located in the limiting notch.
4. The display module assembly of claim 1, wherein a second glue layer is disposed between the second extension and the second notch inner wall.
5. The display module of claim 1, wherein in a direction perpendicular to the bottom plate, a bottom wall of the second notch is higher than a bottom wall of the first notch, and a height difference between the bottom wall of the second notch and the bottom wall of the first notch is greater than or equal to a thickness of the first optical film layer.
6. The display module assembly of claim 1, wherein a second limiting portion is disposed on a side of the second optical film layer adjacent to the first notch, and the second limiting portion is disposed in the first notch.
7. The display module assembly of claim 1, wherein the side plate further comprises a second plate body opposite to the first plate body, a limiting notch is formed in the second plate body, a third limiting portion is arranged on one side, close to the limiting notch, of the second optical film layer, and the third limiting portion is located in the limiting notch.
8. The display module of claim 1, further comprising a middle frame positioned on a peripheral side of the side plate, wherein a boss portion is disposed on a side of the middle frame adjacent to the side plate, the optical film assembly further comprises a third optical film layer stacked on a side of the second optical film layer away from the bottom plate, the third optical film layer is provided with a third extension portion, the boss portion is disposed on a side of the third extension portion away from the bottom plate, and the third extension portion is fixed with the boss portion.
9. The display module assembly of claim 8, wherein a third glue layer is disposed between the third extension portion and the boss portion.
10. The display module assembly of claim 8, wherein the third extension portion includes a first sub-extension portion located on a side of the third optical film layer near the first notch and a second sub-extension portion located on a side of the third optical film layer near the second notch, the boss portion includes at least an L-shaped corner portion, and the first sub-extension portion and the second sub-extension portion are respectively fixed to two sides of the corner portion.
11. The display module assembly of claim 8, wherein the side plate further comprises a second plate body opposite to the first plate body, a limiting notch is formed in the second plate body, a fourth limiting portion is formed in one side, close to the limiting notch, of the third optical film layer, and the fourth limiting portion is located in the limiting notch.
12. The display module assembly of any one of claims 3, 7 and 11, further comprising a center frame positioned on a peripheral side of the side plate, wherein an expansion notch is provided on the center frame, and the expansion notch is disposed corresponding to the limit notch.
13. The display module of claim 12, wherein a light shield is disposed on the expansion gap.
14. The display module assembly of claim 1, further comprising a light guide plate, wherein the light guide plate is arranged between the optical film assembly and the bottom plate, a limiting boss is arranged on one side of the light guide plate, which is close to the optical film assembly, and a limiting hole is correspondingly arranged on the optical film assembly, and the limiting boss is matched with the limiting hole to limit the relative position of the optical film assembly and the light guide plate.
15. The display module according to claim 1, further comprising a light guide plate, wherein the light guide plate is arranged between the optical film assembly and the bottom plate, the side plate is positioned at the periphery of the light guide plate, a light bar is arranged between the periphery of the light guide plate and the side plate, and the surface of the light bar, which is far away from the bottom plate, is lower than the surface of the optical film assembly, which is close to the bottom plate, in the direction perpendicular to the bottom plate; or the surface of the side, far away from the bottom plate, of the light bar is flush with the surface of the side, close to the bottom plate, of the optical film assembly.
16. A display device comprising a display module according to any one of claims 1 to 15.
CN202110341480.8A 2021-03-30 2021-03-30 Display module and display device Active CN115145071B (en)

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