CN220855409U - Vehicle-mounted backlight module and display device for improving displacement of light guide plate - Google Patents
Vehicle-mounted backlight module and display device for improving displacement of light guide plate Download PDFInfo
- Publication number
- CN220855409U CN220855409U CN202322679103.2U CN202322679103U CN220855409U CN 220855409 U CN220855409 U CN 220855409U CN 202322679103 U CN202322679103 U CN 202322679103U CN 220855409 U CN220855409 U CN 220855409U
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- light guide
- guide plate
- vehicle
- backlight module
- displacement
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 28
- 239000012788 optical film Substances 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
- 239000010408 film Substances 0.000 abstract description 39
- 230000037303 wrinkles Effects 0.000 abstract description 2
- 239000002390 adhesive tape Substances 0.000 description 8
- 239000003292 glue Substances 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 229920001821 foam rubber Polymers 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a vehicle-mounted backlight module for improving the displacement of a light guide plate, which comprises a lower frame, a reflecting film, the light guide plate and an optical film, wherein the lower frame comprises a bottom plate and side frames fixedly connected with the bottom plate, a containing cavity is formed between the side frames by the bottom plate, the bottom plate is fixedly connected with a fixing table, the fixing table is arranged in the containing cavity, the reflecting film is connected with the bottom plate, the light guide plate is connected with the fixing table, and the optical film is connected with the light guide plate. The vehicle-mounted backlight module for improving the displacement of the light guide plate can solve the problem that the light guide plate is displaced under the three-combination test in the prior art, avoid the occurrence of wrinkles of the reflecting film and improve the quality of the vehicle-mounted backlight module. The utility model also relates to a display device.
Description
Technical Field
The utility model relates to the technical field of display screens, in particular to a vehicle-mounted backlight module for improving the displacement of a light guide plate and a display device.
Background
Along with the rapid development of multi-screen of new energy vehicles, the requirements of multi-screen and large-screen are more and more, so that the reliability experiment requirement of the backlight module is higher, the vehicle-mounted display screen is required to pass three comprehensive tests before being put into use, wherein the three comprehensive tests refer to the test of three environmental stresses of comprehensive temperature, humidity and vibration, and are used for checking the adaptability of products in transportation and use under the environment of three comprehensive temperature, humidity and vibration.
As shown in fig. 1, the existing vehicle-mounted backlight module comprises a lower frame 21, a reflective film 22, a light guide plate 23 and an optical film, wherein the lower frame 21 comprises a bottom plate and a side frame fixedly connected with the bottom plate, the reflective film 22 is fixedly connected to the bottom plate through a double sided adhesive tape, the light guide plate 23 is fixedly connected to the reflective film 22 through a double sided adhesive tape, the optical film is connected to the light guide plate 23, and when the reflective film 22 is directly connected with the light guide plate 23 in a high-low temperature state, the reflective film 22 and the light guide plate 23 simultaneously have a swelling and shrinking phenomenon, and displacement of the light guide plate and wrinkling of the reflective film are easily caused due to inconsistent swelling and shrinking rates of the reflective film 22 and the light guide plate 23, so that the display effect of the backlight module is seriously affected.
Disclosure of utility model
Therefore, the utility model aims to provide a vehicle-mounted backlight module for improving the displacement of a light guide plate, which can solve the problem that the light guide plate is displaced under three comprehensive tests in the prior art, avoid the occurrence of wrinkles of a reflecting film and improve the quality of the vehicle-mounted backlight module.
The utility model provides a vehicle-mounted backlight module for improving the displacement of a light guide plate, which comprises a lower frame, a reflecting film, the light guide plate and an optical film, wherein the lower frame comprises a bottom plate and a side frame fixedly connected with the bottom plate, a containing cavity is formed between the bottom plate and the side frame, the bottom plate is fixedly connected with a fixed table, the fixed table is arranged in the containing cavity, the reflecting film is connected with the bottom plate, the light guide plate is connected with the fixed table, and the optical film is connected with the light guide plate.
In an alternative mode, the bottom plate comprises an inner surface, the inner surface is arranged in the accommodating cavity, and the fixing table is fixedly connected to the inner surface.
In an alternative mode, the fixing table is arranged on the light incident side of the lower frame, and the fixing table is arranged along the length direction of the light incident side.
In an alternative way, the distance between the end surface of the fixing table far from one end of the bottom plate and the inner surface is 0.2 mm-0.3 mm.
In an alternative, the width of the stationary table is 1.5mm to 2.5mm.
In an alternative manner, the fixing table includes a plurality of fixing portions, and each fixing portion is disposed at a distance from each other.
In an alternative manner, the fixing portion includes a first end portion and a second end portion, the first end portion is fixedly connected to the inner surface, and the length of the fixing portion increases gradually from the first end portion toward a direction approaching the second end portion.
In an optional mode, the vehicle-mounted backlight module for improving the displacement of the light guide plate further comprises a middle frame, wherein the middle frame is provided with a mounting groove, the lower frame is provided with a mounting block, and the mounting block is fixedly connected with the middle frame and the lower frame in a matched mode.
In an optional manner, the vehicle-mounted backlight module for improving the displacement of the light guide plate further comprises a light bar, and the light bar is fixedly connected to the inner wall of the side frame.
The utility model also relates to a display device which comprises the vehicle-mounted backlight module for improving the displacement of the light guide plate.
According to the vehicle-mounted backlight module, the fixed table is arranged on the bottom plate of the lower frame, the reflecting film is fixedly connected to the bottom plate, the light guide plate is fixedly connected to the fixed table, the reflecting film is separated from the light guide plate, the reflecting film and the light guide plate are respectively connected with the lower frame, the phenomenon that the light guide plate is displaced under the three-in-one test is effectively solved, meanwhile, the phenomenon of wrinkling caused by different expansion and contraction rates between the reflecting film and the light guide plate can be avoided, and the quality of the vehicle-mounted backlight module is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic cross-sectional view of a conventional vehicle-mounted backlight module.
Fig. 2 is a partially sectional structural schematic view of a lower frame of a first embodiment of the present utility model.
Fig. 3 is a schematic diagram of a split structure of a vehicle-mounted backlight module according to a first embodiment of the utility model.
Fig. 4 is a schematic top view of a lower frame according to a second embodiment of the present utility model.
Fig. 5 is a schematic cross-sectional view of the structure at A-A in fig. 4.
Detailed Description
Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and the like are to 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. The specific meaning of the terms described above will be understood to those of ordinary skill in the art in a specific context.
The terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," and the like are used as references to orientations or positional relationships based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships in which the inventive product is conventionally disposed in use, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore are not to be construed as limiting the utility model.
The terms "first," "second," "third," and the like, are merely used for distinguishing between similar elements and not necessarily for indicating or implying a relative importance or order.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a list of elements does not include only those elements but may include other elements not expressly listed.
First embodiment
As shown in fig. 2 and 3, the vehicle-mounted backlight module for improving the displacement of the light guide plate comprises a lower frame 11, a reflective film 12, the light guide plate 13 and an optical film 14, wherein the lower frame 11 comprises a bottom plate 111 and a side frame fixedly connected with the bottom plate 111, a containing cavity is formed between the bottom plate 111 and the side frame, the bottom plate 111 is fixedly connected with a fixing table 113, the fixing table 113 is arranged in the containing cavity, the reflective film 12 is connected with the bottom plate 111, the reflective film 12 and the bottom plate 111 can be fixed through double faced adhesive tape or glue, the light guide plate 13 is connected with the fixing table 113, and the optical film 14 is connected on the light guide plate 13. In the present embodiment, the lower frame 11 is preferably formed by stamping or die casting, so that the bottom plate 111, the side frames and the fixing table 113 are integrally formed; the light guide plate 13 is kept away from one side of reflective membrane 12 and sets up the fixture block, and optical diaphragm 14 is equipped with the draw-in groove with fixture block complex, and the fixture block setting is in order fixed connection optical diaphragm 14 and light guide plate 13 in the draw-in groove, can set up the double faced adhesive tape between optical diaphragm 14 and the light guide plate 13 to increase optical diaphragm 14's steadiness, avoid optical diaphragm 14 to appear the phenomenon that drops because of the vibration in three integrated test.
The vehicle-mounted backlight module is characterized in that the fixed table 113 is arranged on the bottom plate 111 of the lower frame 11, the reflecting film 12 is fixedly connected with the bottom plate 111, the light guide plate 13 is fixedly connected with the fixed table 113, the reflecting film 12 is separated from the light guide plate 13, the reflecting film 12 and the light guide plate 13 are respectively connected with the lower frame 11, the phenomenon that the light guide plate 13 is displaced under the three-in-one test is effectively solved, meanwhile, the phenomenon of wrinkling caused by different expansion and contraction rates between the reflecting film 12 and the light guide plate 13 is avoided, and the quality of the vehicle-mounted backlight module is improved.
Preferably, the bottom plate 111 includes an inner surface 111a, the inner surface 111a is disposed in the accommodating cavity, the fixing table 113 is fixedly connected to the inner surface 111a, the fixing table 113 is rectangular and is in a strip shape, the fixing table 113 is disposed on the light incident side of the lower frame 11, and the fixing table 113 is disposed along the length direction of the light incident side, so that the light guide plate 13 is connected to the fixing table 113 on the light incident side, the non-light incident side is used for reserving a collapsible gap for the light guide plate 13, the light guide plate 13 and the fixing table 113 can be fixed by double sided adhesive tape or glue, and the double sided adhesive tape can be a common double sided adhesive tape.
Preferably, the distance between the end surface of the fixed stage 113 at the end far from the bottom plate 111 and the inner surface 111a is 0.2mm to 0.3mm; the distance between the end surface of the fixed table 113 far from the end of the bottom plate 111 and the inner surface 111a is not limited to the height of the fixed table 113, and thus the height of the fixed table 113 is, for example, 0.2mm, 0.25mm, or 0.3 mm.
Preferably, the side frame includes a first side plate 112, a second side plate, a third side plate and a fourth side plate, wherein the first side plate 112 and the second side plate are oppositely arranged, the first side plate 112 and the second side plate are fixedly connected between the third side plate and the fourth side plate, the first side plate 112 is a light incident side, and the fixing table 113 is arranged close to the first side plate 112.
Preferably, the fixing table 113 includes a first side 113a and a second side 113b disposed opposite to each other, where the first side 113a and the second side 113b are disposed along a length direction of the light incident side, the first side 113a is disposed close to the first side plate 112, a distance between the first side 113a and the second side 113b is a width of the fixing table 113, and the width of the fixing table 113 is 1.5 mm-2.5 mm, for example, but not limited to 1.5mm, 2mm, or 2.5 mm.
Preferably, the vehicle-mounted backlight module for improving the displacement of the light guide plate further comprises a plurality of limiting glue blocks 18, each limiting glue block 18 is arranged between the light guide plate 13 and the side frame, and the limiting glue blocks 18 are used for limiting the light guide plate 13; specifically, the limiting glue block 18 is preferably rubber or silica gel, and the limiting glue block 18 is rectangular or L-shaped, and the limiting glue block 18 can prevent the light guide plate 13 from moving.
Preferably, the optical film 14 includes a diffusion film 141, a lower brightness enhancement film 142, an upper brightness enhancement film 143, and a brightness enhancement film 144, the diffusion film 141 is connected to the light guide plate 13, the lower brightness enhancement film 142 is connected to the diffusion film 141, the upper brightness enhancement film 143 is connected to the lower brightness enhancement film 142, and the brightness enhancement film 144 is connected to the upper brightness enhancement film 143; the diffusion film 141, the lower brightness enhancement film 142, the upper brightness enhancement film 143 and the brightness enhancement film 144 can be fixedly connected by a double sided adhesive.
Preferably, the vehicle-mounted backlight module for improving the displacement of the light guide plate further comprises a light bar 16, and the light bar 16 is fixedly connected to the side frame through a heat-conducting double-sided adhesive tape. In this embodiment, the light bar 16 includes a flexible circuit board and a plurality of LED lamps, the plurality of LED lamps are electrically connected with the flexible circuit board, each LED lamp is disposed in the accommodating cavity, each LED lamp is disposed along the length direction of the flexible circuit board, and the flexible circuit board is fixedly connected to the inner wall of the side frame through a heat conducting double sided tape.
Preferably, the vehicle-mounted backlight module for improving the displacement of the light guide plate further comprises a middle frame 15, wherein the middle frame 15 is provided with a mounting groove, the outer wall of the side frame is provided with a mounting block matched with the mounting groove, and the mounting block is arranged in the mounting groove to connect the middle frame 15 and the lower frame 11.
Preferably, the vehicle-mounted backlight module for improving the displacement of the light guide plate further comprises foam rubber 17, wherein the foam rubber 17 is connected to one side of the middle frame 15 far away from the optical film 14, and the foam rubber 17 is used for buffering and fixing the display screen.
Second embodiment
The vehicle-mounted backlight module for improving the displacement of the light guide plate of the present embodiment is substantially identical to the vehicle-mounted backlight module for improving the displacement of the light guide plate of the first embodiment in structure, except that the structure of the fixed table 113 is different.
As shown in fig. 4 and 5, the fixing table 113 includes a plurality of fixing portions 1131, where the fixing portions 1131 are disposed at intervals, and each fixing portion 1131 is disposed along the length direction of the light incident side, that is, each fixing portion 1131 is disposed along the length direction of the first side plate 112; the fixing portion 1131 includes a first end portion 11311 and a second end portion 11312, the first end portion 11311 is fixedly connected to the inner surface 111a, and the length of the fixing portion 1131 increases gradually from the first end portion 11311 toward the second end portion 11312, so as to increase the connection area between the fixing portion 1131 and the light guide plate 13, and increase the connection stability of the light guide plate 13 and the fixing table 113.
The utility model also relates to a display device which comprises the vehicle-mounted backlight module for improving the displacement of the light guide plate. The vehicle-mounted display device of the utility model is, for example, a high-end vehicle-mounted instrument, a vehicle-mounted central control display, a vehicle-mounted vehicle recorder, a vehicle-mounted DVD navigation, a vehicle-mounted driver's cab integrated display screen or a vehicle-mounted streaming media rearview mirror, but the utility model is not limited to the above.
The present utility model is not limited to the above embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.
Claims (10)
1. The utility model provides an improve on-vehicle backlight unit that light guide plate shifted, its characterized in that includes lower frame (11), reflectance coating (12), light guide plate (13) and optical film piece (14), lower frame (11) include bottom plate (111) and with bottom plate (111) fixed connection's side frame, bottom plate (111) with form the holding chamber between the side frame, bottom plate (111) fixedly connected with fixed station (113), fixed station (113) set up in the holding intracavity, reflectance coating (12) connect in bottom plate (111), light guide plate (13) connect in fixed station (113), optical film piece (14) connect on light guide plate (13).
2. The vehicle-mounted backlight module for improving the displacement of the light guide plate according to claim 1, wherein the bottom plate (111) comprises an inner surface (111 a), the inner surface (111 a) is disposed in the accommodating cavity, and the fixing table (113) is fixedly connected to the inner surface (111 a).
3. The vehicle-mounted backlight module for improving the displacement of the light guide plate according to claim 2, wherein the fixed table (113) is disposed on the light incident side of the lower frame (11), and the fixed table (113) is disposed along the length direction of the light incident side.
4. A vehicle-mounted backlight module for improving displacement of a light guide plate according to claim 3, wherein a distance between an end surface of the fixed stage (113) far from one end of the bottom plate (111) and the inner surface (111 a) is 0.2mm to 0.3mm.
5. The vehicle-mounted backlight module for improving the displacement of the light guide plate according to claim 4, wherein the width of the fixing table (113) is 1.5mm to 2.5mm.
6. The vehicle-mounted backlight module for improving the displacement of the light guide plate according to claim 5, wherein the fixing base (113) comprises a plurality of fixing portions (1131), and each fixing portion (1131) is disposed at intervals.
7. The vehicle-mounted backlight module for improving a displacement of a light guide plate according to claim 6, wherein the fixing portion (1131) includes a first end portion (11311) and a second end portion (11312), the first end portion (11311) is fixedly connected to the inner surface (111 a), and a length of the fixing portion (1131) gradually increases from the first end portion (11311) toward a direction approaching the second end portion (11312).
8. The vehicle-mounted backlight module for improving the displacement of the light guide plate according to claim 5 or 7, further comprising a middle frame (15), wherein the middle frame (15) is provided with a mounting groove, the lower frame (11) is provided with a mounting block, and the mounting block is fixedly connected with the middle frame (15) and the lower frame (11) in a matching manner with the mounting groove.
9. The vehicle-mounted backlight module for improving light guide plate displacement according to claim 8, further comprising a light bar (16), wherein the light bar (16) is fixedly connected to an inner wall of the side frame.
10. A display device comprising the vehicle-mounted backlight module for improving displacement of a light guide plate according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322679103.2U CN220855409U (en) | 2023-09-28 | 2023-09-28 | Vehicle-mounted backlight module and display device for improving displacement of light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322679103.2U CN220855409U (en) | 2023-09-28 | 2023-09-28 | Vehicle-mounted backlight module and display device for improving displacement of light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220855409U true CN220855409U (en) | 2024-04-26 |
Family
ID=90742935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322679103.2U Active CN220855409U (en) | 2023-09-28 | 2023-09-28 | Vehicle-mounted backlight module and display device for improving displacement of light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220855409U (en) |
-
2023
- 2023-09-28 CN CN202322679103.2U patent/CN220855409U/en active Active
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