CN113934037B - Display device - Google Patents
Display device Download PDFInfo
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- CN113934037B CN113934037B CN202111246113.6A CN202111246113A CN113934037B CN 113934037 B CN113934037 B CN 113934037B CN 202111246113 A CN202111246113 A CN 202111246113A CN 113934037 B CN113934037 B CN 113934037B
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- China
- Prior art keywords
- side plate
- opening
- light guide
- display device
- plate
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- 239000003292 glue Substances 0.000 claims description 13
- 230000000994 depressogenic effect Effects 0.000 claims 3
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- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 5
- 230000005856 abnormality Effects 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 abstract description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 10
- 239000000758 substrate Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000012788 optical film Substances 0.000 description 6
- 239000010408 film Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
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- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
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- 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
- G02F1/133314—Back frames
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
-
- 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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a display device which comprises a back plate, a light guide plate and a rubber frame, wherein an opening is formed in a side plate of the back plate, a protruding portion and an elastic concave portion are respectively arranged at positions, corresponding to the opening, of the light guide plate and the rubber frame, and the protruding portion and the elastic concave portion are in butt joint. In the display device provided by the invention, the assembly modes of the back plate, the light guide plate and the rubber frame are simple and convenient, other external structures are not required to be introduced, assembly abnormality can be reduced, the assembly yield can be improved, and the cost can be reduced; and when the light guide plate expands due to heating, the elastic concave part can be further compressed by the convex part of the light guide plate, so that the assembly stability is ensured, and the problems of loosening of an internal structure and reduction of a display effect caused by the expansion of the light guide plate are avoided.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device.
Background
The vehicle-mounted display is used as the most direct window for human-vehicle interaction, and has wide market application prospect. However, the quality requirements of the vehicle-mounted display are more severe based on the special use environment. The vehicle-mounted display has the advantages of convenient operation, stable performance, high safety coefficient and the like while having a basic display function.
At present, the application in the vehicle-mounted display is more widely a liquid crystal display device with more mature technical development, the liquid crystal display device generally comprises a backlight module and a liquid crystal display panel arranged on the light emitting side of the backlight module, the stability of the backlight module directly determines the overall stability of the liquid crystal display device, and due to the fact that the temperature difference range of the application environment of the vehicle-mounted display is large, a light guide plate in the backlight module tends to expand or shrink greatly due to the large temperature change, so that the internal structure of the backlight module is loose, and the problems of noise, scratches of particles in the backlight, reduction of the optical effect of the backlight module, reduction of the display effect of the vehicle-mounted display and the like are further caused.
Disclosure of Invention
The invention provides a display device, which can solve the problem of loose internal structure of the display device caused by expansion of a light guide plate and effectively improve the stability and display effect of the display device.
The present invention provides a display device including:
the backboard comprises a bottom board and a plurality of side boards, wherein the bottom board and the side boards form a containing cavity, and at least one side board is provided with an opening;
the light guide plate is accommodated in the accommodating cavity, and a protruding part facing the opening is arranged at the position of the light guide plate corresponding to the opening;
the rubber frame is arranged on the outer sides of the side plates in a surrounding mode, an elastic concave portion which is concave towards the opening is arranged at the position, corresponding to the opening, of the rubber frame, and the elastic concave portion is in butt joint with the protruding portion.
Optionally, the plurality of side plates include a first side plate, a second side plate, a third side plate and a fourth side plate, the first side plate and the third side plate are oppositely arranged, the second side plate and the fourth side plate are oppositely arranged, and a groove is formed on one side of the light guide plate facing the first side plate;
the display device further comprises a backlight source, and the backlight source is arranged on the first side plate and is accommodated in the groove.
Optionally, at least one opening is provided on the third side plate.
Optionally, at least one opening is arranged on the second side plate; and/or at least one opening is arranged on the fourth side plate.
Optionally, the opening on the second side plate and the opening on the fourth side plate are arranged in a staggered manner.
Optionally, a light shielding member is disposed on a side of the elastic concave portion away from the light guide plate.
Optionally, the elastic concave portion is in a compressed state.
Optionally, a chamfer is provided at an end of the elastic recess adjacent to the bottom plate.
Optionally, a gap exists between the light guide plate and the side plate, and a gap exists between the rubber frame and the side plate.
Optionally, the lengths of the first side plate and the third side plate are greater than those of the second side plate and the fourth side plate, 2 to 5 elastic concave portions are arranged on the third side plate, and 2 elastic concave portions are arranged on the second side plate and/or the fourth side plate.
The display device comprises a backboard, a light guide plate and a rubber frame, wherein an opening is formed in a side plate of the backboard, a protruding part and an elastic concave part are respectively arranged at positions, corresponding to the opening, of the light guide plate and the rubber frame, the protruding part and the elastic concave part are in butt joint, the assembly mode of the protruding part and the elastic concave part is simple and convenient, other external structures are not required to be introduced, assembly abnormality can be reduced, the assembly yield can be improved, and the cost can be reduced; and when the light guide plate expands due to heating, the elastic concave part can be further compressed by the convex part of the light guide plate, so that the assembly stability is ensured, and the problems of loosening of an internal structure and reduction of a display effect caused by the expansion of the light guide plate are avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 (a) shows a schematic structural diagram of a backlight module according to an embodiment of the present invention;
fig. 1 (b) shows a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 shows a schematic cross-sectional view along line AA' of FIG. 1 (a);
fig. 3 is a schematic structural diagram of a back plate according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a light guide plate according to an embodiment of the present invention;
fig. 5 shows a schematic structural diagram of a rubber frame according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application. In this application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials. The following detailed description is given, respectively, to the description of the following embodiments, but the description of the embodiments is not to be taken as limiting the preferred embodiments.
The present invention provides a display device, such as a liquid crystal display device. Specifically, fig. 1 (a) shows a schematic structural diagram of a backlight module provided by an embodiment of the present invention; fig. 1 (b) shows a schematic structural diagram of a display panel according to an embodiment of the present invention, and fig. 2 shows a schematic sectional view along line AA' of fig. 1 (a); referring to fig. 1 (a), fig. 1 (b) and fig. 2, the liquid crystal display device includes a backlight module 10 and a liquid crystal display panel 20, wherein the liquid crystal display panel 20 is disposed on a light emitting side of the backlight module 10.
In this embodiment, the liquid crystal display panel 20 includes an array substrate 210, a color film substrate 220, and a liquid crystal layer 230 between the array substrate 210 and the color film substrate 220. In terms of the liquid crystal driving mode, the liquid crystal display panel 20 may be a Twisted Nematic (TN) type liquid crystal display panel, a vertical alignment (Vertical Alignment, VA) type liquid crystal display panel, an In-Plane Switching (IPS) type liquid crystal display panel, a fringe field Switching (Fringe Field Switching, FFS) type liquid crystal display panel, or other types of liquid crystal display panels; in terms of panel architecture, the lcd panel 20 may be a conventional lcd panel in which color filters and black matrices are disposed on the color film substrate 220, or a COA (Color Filter On Array) lcd panel in which color filters are disposed on the array substrate 210, or a BOA (Black Matrix On Array) lcd panel in which black matrices are disposed on the array substrate 210.
In this embodiment, the backlight module 10 includes: back plate 110, light guide plate 140, frame 150, backlight 130, reflector 120, and optical film set 160.
Specifically, the back plate 110 includes a bottom plate 111 and a plurality of side plates 112, where the bottom plate 111 and the plurality of side plates 112 form a receiving cavity, and in an alternative embodiment of the present application, the back plate 110 is in an integral sheet metal structure, that is, the bottom plate 111 of the back plate 110 and the plurality of side plates 112 are integrally formed; the light guide plate 140 is disposed on the bottom plate 111 and is accommodated in the accommodating cavity formed by the back plate 110; the glue frame 150 is disposed at the periphery of the back plate 110, and specifically surrounds one side of the plurality of side plates 112 away from the light guide plate 140; the backlight 130 is disposed at one side of the light guide plate 140 and corresponds to the light incident surface of the light guide plate 140, and preferably, the backlight 130 is disposed between the light guide plate 140 and the side plate 112, that is, the backlight module 10 is a side-in backlight module; the reflective sheet 120 is disposed between the back plate 110 and the light guide plate 140; the optical film set 160 is disposed above the light guide plate 140 and corresponds to the light emitting surface of the light guide plate 140, and the optical film set 160 includes, for example, a diffusion sheet, a brightness enhancement film, a prism sheet, and the like.
In this embodiment, at least one of the side plates 112 is provided with an opening 113, the light guide plate 140 is provided with a protrusion 141 facing the opening 113 at a position corresponding to the opening 113, the rubber frame 150 is provided with an elastic recess 151 recessed toward the opening 113 at a position corresponding to the opening 113, the elastic recess 151 is abutted against the protrusion 141, and the elastic recess 151 has elasticity and can be further compressed after the light guide plate 140 is expanded by heating.
In the prior art, the phenomenon of thermal expansion can occur to the light guide plate under the influence of backlight source heating or external temperature, so that the internal structure of the display device is loosened, abnormal sound in the use process and particles in the backlight module are scratched, in order to provide space for the thermal expansion of the light guide plate, rubber blocks are arranged between four corners of the light guide plate and the side plates by the conventional fixing method of the light guide plate, assembly deviation of the rubber blocks is easy to occur in the assembly process, the light guide plate and the optical film are jacked up, and further the light guide plate does not have expansion space required by design, so that the optical films in the optical film group are wrinkled, and the display effect is affected.
Fig. 3 is a schematic structural diagram of a back plate according to an embodiment of the present invention; fig. 4 is a schematic structural diagram of a light guide plate according to an embodiment of the present invention; fig. 5 shows a schematic structural diagram of a rubber frame according to an embodiment of the present invention. As shown in fig. 1 (a) -5, the display device provided by the invention comprises a back plate 110, a light guide plate 140 and a rubber frame 150, wherein an opening 113 is arranged on a side plate 112 of the back plate 110, a convex part 141 and an elastic concave part 151 are respectively arranged at positions of the light guide plate 140 and the rubber frame 150 corresponding to the opening 113, the convex part 141 and the elastic concave part 151 are abutted, the assembly mode of the convex part 141 and the elastic concave part 151 is simple and convenient, other external structures are not required to be introduced, the assembly abnormality can be reduced, the assembly yield can be improved, and the cost can be reduced; and when the light guide plate 140 expands due to heat, the elastic concave portion 151 can be further compressed by the convex portion 141 of the light guide plate 140, so as to ensure assembly stability, and avoid the problems of loose internal structure of the backlight module 10 and reduced display effect of the display device caused by expansion of the light guide plate 140.
In this embodiment, the plurality of side plates 112 includes a first side plate 1121, a second side plate 1122, a third side plate 1123, and a fourth side plate 1124, the first side plate 1121 and the third side plate 1123 are disposed opposite to each other, and the second side plate 1122 and the fourth side plate 1124 are disposed opposite to each other.
In this embodiment, the first side plate 1121, the second side plate 1122, the third side plate 1123 and the fourth side plate 1124 form a rectangle, the length of the first side plate 1121 is equal to the length of the third side plate 1123, the length of the second side plate 1122 is equal to the length of the fourth side plate 1124, and the lengths of the first side plate 1121 and the third side plate 1123 are greater than the lengths of the second side plate 1122 and the fourth side plate 1124.
In this embodiment, a groove 143 is formed on a side of the light guide plate 140 facing the first side plate 1121, specifically, the light guide plate 140 includes supporting bodies 142 disposed on two sides of the groove 143, the backlight 130 is disposed on the first side plate 1121 and is accommodated in the groove 143, and a depth of the groove 143 is greater than a thickness of the backlight 130. Preferably, the opening 113 is not provided on the first side plate 1121, and since the light guide plate 140 has a recess 143 for accommodating the backlight 130 formed on a side close to the side plate 112, when the opening is not provided on the first side plate 1121, it is not necessary to provide a protrusion on a side of the light guide plate 140 close to the first side plate 1121, so that the supporting strength of the light guide plate 140 can be ensured and the manufacturing process can be simplified.
In this embodiment, at least one opening 113 is provided on the third side plate 1123, and the light guide plate 140 and the plastic frame 150 on two sides of the third side plate 1123 are respectively provided with a protruding portion 141 and an elastic recessed portion 151 corresponding to the openings 113 on the third side plate 1123 one by one. Preferably, 2 to 5 openings 113 are provided on the third side plate 1123, and the number of the openings 113 may be adaptively set according to the size of the backlight module 10 in the display panel 20. Specifically, when the size of the backlight module 10 (i.e., the length of the diagonal line of the backlight module 10) is 17 to 27 inches, 2 to 3 openings 113 are provided on the third side plate 1123, and correspondingly, 2 to 3 protrusions 141 are provided on the side of the light guide plate 140 close to the third side plate 1123, and 2 to 3 elastic recesses 151 are provided on the side of the glue frame 150 close to the third side plate 1123; when the size of the backlight module 10 is greater than 27 inches but less than or equal to 48 inches, 3 to 5 openings 113 are provided on the third side plate 1123, correspondingly, 3 to 5 protrusions 141 are provided on a side of the light guide plate 140 close to the third side plate 1123, and 3 to 5 elastic recesses 151 are provided on a side of the frame 150 close to the third side plate 1123. Of course, the size of the backlight module 10 may be less than 17 inches or greater than or equal to 48 inches, in this case, only 1 opening 113 or more than 5 openings 113 may be provided on the third side plate 1123, and correspondingly, 1 or more than 5 protrusions 141 are provided on a side of the light guide plate 140 near the third side plate 1123, and 1 or more than 5 elastic recesses 151 are provided on a side of the glue frame 150 near the third side plate 1123.
In this embodiment, the opening 113 is in clearance fit with the protruding portion 141, and the opening 113 is in clearance fit with the elastic recess 151. Preferably, the shape of the opening 113 is rectangular, the elastic recess 151 includes two side portions 1511 spaced apart and symmetrically arranged, and a bottom portion 1512 connecting the two side portions 1511, the side portions 1511 and the bottom portion 1512 form an obtuse angle, the bottom portion 1512 abuts against the protruding portion 141, and the length of the opening 113 is greater than the maximum spacing distance between the two side portions 1511 of the elastic recess 151. When the backlight module 10 is 17 to 27 inches in size, the length of the opening 113 is 7 to 10mm, the maximum distance between the two side portions 1511 of the elastic concave portion 151 is 5 to 8mm, and the depth of the elastic concave portion 151 is 0.5 to 1mm; when the size of the backlight module 10 is greater than 27 inches but less than or equal to 48 inches, the length of the opening 113 is 10 to 12mm, the maximum distance between the two side portions 1511 of the elastic concave portion 151 is 8 to 10mm, and the depth of the elastic concave portion 151 is 0.5 to 1mm.
Of course, in other embodiments, the opening 113 may have other shapes such as a circular shape, and the concave profile of the elastic concave portion 151 may be a straight line shape or a circular arc shape; the convex profile of the convex portion 141 may be linear or circular arc.
As shown in fig. 2, in this embodiment, at least one opening 113 is provided on the fourth side plate 1124, and the opening 113 is not provided on the second side plate 1122. Since at least one opening 113 is disposed on each of the adjacent third side plate 1123 and fourth side plate 1124, a protrusion 141 is disposed at a position of the light guide plate 140 corresponding to each opening 113, and an elastic recess 151 is disposed at a position of the glue frame 150 corresponding to each opening 113, so that when the light guide plate 140 expands longitudinally and laterally, an expansion space is provided for longitudinal and lateral expansion of the light guide plate 140 by partially compressing the elastic recess 151 by the protrusions 141 disposed in the openings 113 of the third side plate 1123 and the fourth side plate 1124. Preferably, 2 openings 113 are provided on the fourth side plate 1124, and no openings 113 are provided on the second side plate 1122.
In another implementation of this embodiment, at least one of the openings 113 is provided on the second side plate 1122, and the opening 113 (not shown) is not provided on the fourth side plate 1124. Since at least one opening 113 is disposed on each of the adjacent third side plate 1123 and second side plate 1122, a protrusion 141 is disposed at a position of the light guide plate 140 corresponding to each opening 113, and an elastic recess 151 is disposed at a position of the glue frame 150 corresponding to each opening 113, so that when the light guide plate 140 expands longitudinally and laterally, an expansion space is provided for longitudinal and lateral expansion of the light guide plate 140 by partially compressing the elastic recess 151 by the protrusions 141 disposed in the openings 113 of the third side plate 1123 and the second side plate 1122. Preferably, 2 openings 113 are provided on the second side plate 1122, and no opening 113 is provided on the fourth side plate 1124.
In yet another implementation of this embodiment, at least one of the openings 113 is provided on the fourth side plate 1124, and at least one of the openings 113 (not shown) is provided on the second side plate 1122. Since the second side plate 1122 and the fourth side plate 1124 adjacent to the third side plate 1123 are respectively provided with at least one opening 113, the light guide plate 140 is respectively provided with a protrusion 141 corresponding to each opening 113, and the glue frame 150 is respectively provided with an elastic recess 151 corresponding to each opening 113, when the light guide plate 140 is laterally expanded, the protrusion 141 partially located in the opening 113 of the second side plate 1122 can compress the elastic recess 151 to provide an expansion space for the lateral expansion of the light guide plate 140, and the protrusion 141 partially located in the opening 113 of the fourth side plate 1124 can compress the elastic recess 151 to provide an expansion space for the lateral expansion of the light guide plate 140, so that the lateral expansion space of the light guide plate 140 is larger, and the high temperature resistance of the display device is improved. Preferably, 2 openings 113 are provided in the second side plate 1122 and the fourth side plate 1124, respectively. Further, the openings 113 on the second side plate 1122 and the openings 113 on the fourth side plate 1124 are arranged in a staggered manner, so as to improve the assembly stability and make the protrusions 141 of the expanded light guide plate 140 more uniform when compressing the elastic concave portion 151, preferably, the number of openings 113 on the second side plate 1122 is different from the number of openings 113 on the fourth side plate 1124, for example, 2 openings 113 are arranged on the second side plate 1122 of the fourth side plate 1124, 1 opening 113 is arranged on the second side plate 1122, and the orthographic projection of the openings 113 on the second side plate 1122 on the fourth side plate 1124 is located between 2 openings 113 on the fourth side plate 1124; alternatively, 2 openings 113 are provided on the second side plate 1122, 1 opening 113 is provided on the fourth side plate 1124, and the orthographic projection of the opening 113 on the fourth side plate 1124 on the second side plate 1122 is located between 2 openings 113 on the second side plate 1122.
In this embodiment, a light shielding member (not shown) is disposed on a side of the elastic recess 151 away from the light guide plate 140, and the light shielding member is used to prevent light in the light guide plate 140 from being emitted from the plastic frame 150 through the opening 113 on the side plate 112, so as to avoid light leakage. Specifically, the light shielding member may be a light shielding tape or a light shielding plate.
In this embodiment, the elastic concave portion 151 is in a compressed state, that is, after the backlight module 10 in the display device is assembled, the elastic concave portion 151 is already compressed by the convex portion 141, so that the assembly of the elastic concave portion 151 and the convex portion 141 is more stable and firm, and the stability of the backlight module 10 and the display device in a normal use state is improved; in addition, since the elastic concave portion 151 has a certain compression amount in the initial assembly state, even if the light guide plate 140 is contracted due to the external environment, the elastic concave portion 151 can rebound, so that the convex portion 141 of the light guide plate 140 and the elastic concave portion 151 still maintain a stable abutting state, thereby ensuring the assembly effect of the backlight module 10 and the display quality of the display device.
In this embodiment, the light guide plate 140 and the protruding portion 141 are integrally formed, and the rubber frame 150 and the elastic recessed portion 151 are integrally formed, so as to simplify the manufacturing process and reduce the material cost.
In this embodiment, the end portion of the elastic recess 151 adjacent to the bottom plate 111 is provided with a chamfer 152, and since the glue frame 150 is sleeved on the outer side of the side plate 112 from top to bottom, the glue frame 150 can be more simple and convenient to assemble with the light guide plate 140 and the side plate 112 by arranging the chamfer 152, and the assembly yield is improved. The chamfer 152 may be in the shape of a circular arc chamfer or an angular chamfer.
In this embodiment, the positions of the back plate 110 and the glue frame 150 in the display device are fixed, preferably, a gap exists between the light guide plate 140 and the side plate 112, and since the expansion of the light guide plate 140 when it is expanded by heat is integral, by providing a gap between the light guide plate 140 and the side plate 112, an expansion space can be provided for other positions of the light guide plate 140 except for the protruding portion 141, so that the stability of the backlight module 10 and the display device in the high temperature state is improved. Further, a gap exists between the glue frame 150 and the side plate 112, and the gap between the glue frame 150 and the side plate 112 can promote the maximum compression of the elastic concave portion 151 of the glue frame 150, further promote the stability of the backlight module 10 and the display device in a high-temperature state, reduce the assembly difficulty, and promote the assembly yield.
In summary, the present invention provides a display device, including: the backboard comprises a bottom board and a plurality of side boards, wherein the bottom board and the side boards form a containing cavity, and at least one side board is provided with an opening; the light guide plate is accommodated in the accommodating cavity, and a protruding part facing the opening is arranged at the position of the light guide plate corresponding to the opening; the rubber frame is arranged on the outer sides of the side plates in a surrounding mode, an elastic concave portion which is concave towards the opening is arranged at the position, corresponding to the opening, of the rubber frame, and the elastic concave portion is in butt joint with the protruding portion. In the display device provided by the invention, the assembly modes of the back plate, the light guide plate and the rubber frame are simple and convenient, other external structures are not required to be introduced, assembly abnormality can be reduced, the assembly yield can be improved, and the cost can be reduced; and when the light guide plate expands due to heating, the elastic concave part can be further compressed by the convex part of the light guide plate, so that the assembly stability is ensured, and the problems of loosening of an internal structure and reduction of a display effect caused by the expansion of the light guide plate are avoided.
The foregoing has outlined some of the more detailed description of the present invention for a display device, wherein specific examples are provided herein to illustrate the principles and embodiments of the present invention, and wherein the above examples are provided to assist in the understanding of the method and core concepts of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present invention, the present description should not be construed as limiting the present invention.
Claims (10)
1. A display device, characterized in that the display device comprises:
the backboard comprises a bottom board and a plurality of side boards, wherein the bottom board and the side boards form a containing cavity, and at least one side board is provided with an opening;
the light guide plate is accommodated in the accommodating cavity, and a protruding part facing the opening is arranged at the position of the light guide plate corresponding to the opening;
the rubber frame is arranged on the outer sides of the side plates in a surrounding mode, an elastic concave portion which is concave towards the opening is arranged at the position, corresponding to the opening, of the rubber frame, and the elastic concave portion is abutted to the convex portion;
the opening with bellying clearance fit, the opening with elasticity depressed part clearance fit, elasticity depressed part includes two intervals and the symmetrical lateral part that sets up and connects two the bottom of lateral part, the lateral part with become the obtuse angle between the bottom, the bottom with bellying looks butt, the length of opening is greater than the biggest interval distance between two lateral parts of elasticity depressed part.
2. The display device according to claim 1, wherein the plurality of side plates includes a first side plate, a second side plate, a third side plate, and a fourth side plate, the first side plate and the third side plate are disposed opposite to each other, the second side plate and the fourth side plate are disposed opposite to each other, and a side of the light guide plate facing the first side plate is formed with a groove;
the display device further comprises a backlight source, and the backlight source is arranged on the first side plate and is accommodated in the groove.
3. The display device according to claim 2, wherein at least one of the openings is provided on the third side plate.
4. A display device according to claim 3, wherein the second side plate is provided with at least one of the openings;
and/or at least one opening is arranged on the fourth side plate.
5. The display device of claim 4, wherein the opening in the second side panel is offset from the opening in the fourth side panel.
6. The display device according to claim 1, wherein a side of the elastic recess portion away from the light guide plate is provided with a light shielding member.
7. The display device according to claim 1, wherein the elastic concave portion is in a compressed state.
8. The display device according to claim 1, wherein an end portion of the elastic recess portion adjacent to the bottom plate is provided with a chamfer.
9. The display device of claim 1, wherein a gap exists between the light guide plate and the side plate, and a gap exists between the glue frame and the side plate.
10. The display device according to claim 2, wherein the length of the first side plate and the third side plate is greater than the length of the second side plate and the fourth side plate, 2 to 5 elastic concave portions are provided on the first side plate, and 2 elastic concave portions are provided on the second side plate and/or the fourth side plate.
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| CN202111246113.6A CN113934037B (en) | 2021-10-26 | 2021-10-26 | Display device |
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| CN113934037A (en) | 2022-01-14 |
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