CN216487085U - Backlight module for preventing light guide plate from generating bright blocks and vehicle-mounted display device - Google Patents
Backlight module for preventing light guide plate from generating bright blocks and vehicle-mounted display device Download PDFInfo
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- CN216487085U CN216487085U CN202123347108.2U CN202123347108U CN216487085U CN 216487085 U CN216487085 U CN 216487085U CN 202123347108 U CN202123347108 U CN 202123347108U CN 216487085 U CN216487085 U CN 216487085U
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- guide plate
- light guide
- light
- backlight module
- fixed block
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- 239000010408 film Substances 0.000 claims description 24
- 239000012788 optical film Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims 4
- 230000000007 visual effect Effects 0.000 abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model provides a prevent that light guide plate from appearing backlight unit of bright piece, including chase, lamp strip, light guide plate, optics diaphragm and shading unit, light guide plate and optics diaphragm are installed in the chase, and the optics diaphragm sets up on the light guide plate, and the lamp strip sets up with the relative of income light side of light guide plate, is equipped with a plurality of fixed blocks on the light guide plate, and optics diaphragm is equipped with a plurality of fixed slots, and each fixed block sets up in the fixed slot, and the shading unit corresponds the setting with each fixed block, and the shading unit is used for sheltering from the light that the fixed block jetted out. The utility model discloses a backlight unit can effectively avoid the problem that bright piece appears in the large visual angle light guide plate. The utility model discloses still relate to an on-vehicle display device.
Description
Technical Field
The utility model relates to a display screen technical field, in particular to prevent that backlight unit and vehicle-mounted display device of bright piece from appearing in light guide plate.
Background
At present, the screen of automotive interior is bigger and bigger, and the design of the narrow frame of demand obtains better visual experience and display area, jumbo size and super narrow frame are the development trend of car and each handheld device, but the problem of luminous big visual angle has also been brought in step, for example some modules that often are visible under the big visual angle have the bright patch problem, jumbo size light guide plate is because of needing to be the equipment of structure boss with the optical diaphragm and match, prevent the diaphragm swing, in addition the trend design of narrow frame, the light guide plate boss produces optical refraction easily, big visual angle luminance appears, seriously influence consumer's visual experience and taste, so it is necessary to develop jumbo size and narrow frame can effectively prevent the light guide plate and the backlight of big visual angle bright patch to appear.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a backlight module and vehicle-mounted display device, backlight module can effectively avoid the problem that bright piece appears in the large visual angle light guide plate.
The utility model provides a prevent that backlight unit of bright piece from appearing in light guide plate, a serial communication port, including chase, lamp strip, light guide plate, optics diaphragm and shading unit, light guide plate and optics diaphragm are installed in the chase, and the optics diaphragm sets up on the light guide plate, and the lamp strip sets up with the income light side of light guide plate is relative, is equipped with a plurality of fixed blocks on the light guide plate, and optics diaphragm is equipped with a plurality of fixed slots, and each fixed block sets up in the fixed slot, and the shading unit corresponds the setting with each fixed block, and the shading unit is used for sheltering from the light that the fixed block jetted out.
The utility model discloses in, above-mentioned shading unit includes a plurality of lens hoods, and each fixed block is located to each lens hood cover.
The utility model discloses in, above-mentioned shading unit includes a plurality of photomask, and the photomask is pasted in the upper surface of optical film piece and is covered in the fixed block.
The utility model discloses in, above-mentioned shading unit includes a plurality of light shield layers, and the fixed block includes top surface and first side, and the top surface is on a parallel with the surface of light guide plate, and first side is on a parallel with income light side, and top surface and first side are all attached to have the light shield layer.
The utility model discloses in, above-mentioned fixed block still includes second side, third side and fourth side, and the second side sets up with first side is relative, and the third side sets up with fourth side is relative, and first side, second side are connected in third side, fourth side, and second side, third side and fourth side are all attached to have the light shield layer.
The utility model discloses in, above-mentioned lamp strip includes a plurality of light sources, and the fixed block is located between two adjacent light sources.
The utility model discloses in, the length of above-mentioned fixed block is 1mm ~ 4mm, and the width of fixed block is 1mm ~ 4 mm.
The utility model discloses in, one side that optical diaphragm was kept away from to above-mentioned light guide plate is equipped with the stopper, and the chase includes the bottom plate, is equipped with the spacing groove that corresponds the setting with the stopper on the bottom plate, and the stopper is fixed the light guide plate on the bottom plate with the spacing groove cooperation.
The utility model discloses in, above-mentioned backlight unit who prevents that bright piece from appearing in light guide plate still includes the reflectance coating, and in the chase was located to the reflectance coating, the reflectance coating was located between bottom plate and the light guide plate.
The utility model discloses still relate to an on-vehicle display device, including foretell backlight unit who prevents that bright piece from appearing in the light guide plate.
The utility model discloses a backlight unit is equipped with the shading unit that corresponds the setting with the fixed block, and when backlight unit during operation, the shading unit blocks that the light of light guide plate jets out from the fixed block, avoids appearing the bright piece problem under the light guide module wide-angle of view, improves the user and uses experience.
Drawings
Fig. 1 is a schematic view of a split structure of a backlight module according to a first embodiment of the present invention for preventing bright blocks from appearing on a light guide plate.
Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.
Fig. 3 is a schematic cross-sectional structure of fig. 2.
Fig. 4 is a schematic partial sectional structure diagram of a second embodiment of the present invention.
Fig. 5 is a schematic side view of a fixing block according to a third embodiment of the present invention.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to facilitate understanding of those skilled in the art, the present application provides a specific implementation process of the technical solution provided by the present application through the following embodiments.
First embodiment
Fig. 1 is the utility model discloses a prevent that light guide plate from appearing backlight unit's of bright piece split structure schematic diagram of first embodiment, fig. 2 is the enlarged structure schematic diagram of A department in fig. 1, fig. 3 is the sectional structure schematic diagram of fig. 2, as fig. 1, fig. 2 and fig. 3 are shown, prevent that light guide plate from appearing the backlight unit of bright piece and include chase 11, lamp strip 12, light guide plate 13, optics diaphragm 14 and shading unit, light guide plate 13 and optics diaphragm 14 are installed in chase 11, optics diaphragm 14 sets up on light guide plate 13, lamp strip 12 sets up with the income light side of light guide plate 13 relatively, be equipped with a plurality of fixed blocks 131 on the light guide plate 13, optics diaphragm 14 is equipped with a plurality of fixed slots 101, each fixed block 131 sets up in fixed slot 101, shading unit corresponds the setting with each fixed block 131, shading unit is used for sheltering from the light that fixed block 131 jetted out. In the embodiment, the fixing blocks 131 and the light guide plate 13 are designed as an integral structure, the number of the fixing blocks 131 is, for example, three or 4, when the number of the fixing blocks 131 is 3, two fixing blocks 131 are respectively disposed at two ends of the light incident side of the light guide plate 13, and one fixing block 131 is disposed in the middle of the light incident side of the light guide plate 13, but not limited thereto.
The utility model discloses a backlight unit is equipped with the shading unit that corresponds the setting with fixed block 131, and when backlight unit during operation, the shading unit blocks light guide plate 13's light and jets out from fixed block 131, avoids appearing the bright piece problem under the light guide module wide-angle of view, improves the user and uses experience.
Further, the light shielding unit includes a plurality of light shielding covers 151, and each light shielding cover 151 is sleeved on each fixing block 131. In this embodiment, the light-shielding cover 151 is provided with an accommodating cavity, the fixing block 131 is installed in the accommodating cavity, and the light-shielding cover 151 can prevent the light of the light guide plate 13 from being emitted from the fixing block 131, thereby preventing the occurrence of the problem of bright blocks appearing under a large viewing angle of the backlight module.
Further, the light bar 12 comprises a plurality of light sources, and the fixing block 131 is disposed between two adjacent light sources. In this embodiment, the position of the fixing block 131 enables the light source to directly irradiate onto the fixing block 131, so as to effectively reduce the optical reflection or refraction generated by the light source directly irradiating onto the fixing block 131, and the problem of bright blocks of the large-viewing-angle light guide plate 13 can be effectively solved by covering the fixing block with the optical film 14.
Further, the length of the fixing block 131 is 1mm to 4mm, and the width of the fixing block 131 is 1mm to 4 mm. In this embodiment, the length of the fixed block 131 is, for example, 1mm, 2mm, 3mm, or 4mm, the width of the fixed block 131 is, for example, 1mm, 2mm, 3mm, or 4mm, wherein the length of the fixed block 131 may be 2mm, and the width of the fixed block 131 may be 3mm, and thus the combination of the fixed block 131 having a smaller volume can effectively reduce the optical reflection or refraction phenomenon caused by the light source directly irradiating the fixed block 131.
Furthermore, a limiting block 132 is disposed on one side of the light guide plate 13 away from the optical film 14, the iron frame 11 includes a bottom plate, a limiting groove corresponding to the limiting block 132 is disposed on the bottom plate, and the limiting block 132 is matched with the limiting groove to fix the light guide plate 13 on the bottom plate. In this embodiment, the number of the stoppers 132 is, for example, three or four, the shape of the stoppers 132 is, for example, rectangular or cylindrical, and the stoppers 132 are used to fix the light guide plate 13 on the floor to avoid the occurrence of vibration and abnormal sound when the backlight module is used.
Further, the backlight module for preventing the light guide plate from generating the bright blocks further comprises a reflective film 16, the reflective film 16 is arranged in the iron frame 11, and the reflective film 16 is positioned between the bottom plate and the light guide plate 13. In this embodiment, the reflective film 16 is fixed in the bezel 11 by a double-sided tape, the light guide plate 13 is fixed on the reflective film 16 by a double-sided tape, and the optical film 14 is fixedly attached to the light guide plate 13.
Further, 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 fixedly connected to the light guide plate 13, the lower brightness enhancement film 142 is fixedly connected to the diffusion film 141, the upper brightness enhancement film 143 is fixedly connected to the lower brightness enhancement film 142, and the brightness enhancement film 144 is fixedly connected to the upper brightness enhancement film 143.
Further, the backlight module for preventing the light guide plate from generating bright blocks further comprises a middle frame 17, wherein the middle frame 17 is arranged on the optical film 14 and embedded into the iron frame 11.
Second embodiment
Fig. 4 is a schematic view of a partial cross-sectional structure of a second embodiment of the present invention, as shown in fig. 4, the backlight module for preventing the occurrence of bright blocks on the light guide plate of the present embodiment is substantially the same as the backlight module for preventing the occurrence of bright blocks on the light guide plate of the first embodiment, and the difference lies in the difference of the structures of the fixed blocks.
Specifically, the light shielding unit includes a plurality of light shielding films 152, and the light shielding films 152 are attached to the upper surface of the optical film 14 and cover the fixing block 131. In the embodiment, the light shielding film 152 is adhered to the upper surface of the optical film 14 and covers the top surface of the fixed block 131 and the side surface close to the light incident side, so as to prevent light from being emitted from the fixed block 131, and thus the problem of bright blocks of the large-viewing-angle light guide plate 13 can be effectively solved.
Third embodiment
Fig. 5 is a schematic side view of the fixing block of the third embodiment of the present invention, as shown in fig. 5, the backlight module for preventing the occurrence of bright blocks on the light guide plate of the present embodiment is substantially the same as the backlight module for preventing the occurrence of bright blocks on the light guide plate of the first embodiment, and the difference lies in the difference of the structures of the fixing blocks.
Specifically, the light shielding unit includes a plurality of light shielding layers 153, the fixing block 131 includes a top surface 131a and a first side surface 131b, the top surface 131a is parallel to the surface of the light guide plate 13, the first side surface 131b is parallel to the light incident side, and the light shielding layers 153 are attached to both the top surface 131a and the first side surface 131 b. In the present embodiment, the light shielding layer 153 is attached to the top surface 131a and the first side surface 131b by double-sided adhesive.
In another preferred embodiment, based on the above embodiment, the fixing block 131 further includes a second side surface, a third side surface and a fourth side surface, the second side surface is disposed opposite to the first side surface 131b, the third side surface is disposed opposite to the fourth side surface, the first side surface 131b and the second side surface are connected to the third side surface and the fourth side surface, and the light shielding layer 153 is attached to the second side surface, the third side surface and the fourth side surface, so as to prevent light from being emitted from the fixing block 131, and effectively solve the problem of bright blocks of the large-viewing-angle light guide plate 13.
The utility model discloses still relate to an on-vehicle display device, including foretell backlight unit who prevents that bright piece from appearing in the light guide plate. In the present embodiment, the vehicle-mounted display device is, for example, a car display screen, a vehicle-mounted central controller, a vehicle-mounted meter display, or a vehicle-mounted streaming media rearview mirror, but the invention is not limited thereto.
The utility model discloses not be limited to the specific details among the above-mentioned embodiment the utility model discloses a within the technical idea scope, can be right the technical scheme of the utility model carry out multiple simple variant, these simple variants all belong to the utility model discloses a protection scope. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
Claims (10)
1. The utility model provides a prevent that bright piece's backlight unit from appearing in light guide plate, its characterized in that, includes chase (11), lamp strip (12), light guide plate (13), optics diaphragm (14) and shading unit, light guide plate (13) with optics diaphragm (14) are installed in chase (11), optics diaphragm (14) set up on light guide plate (13), lamp strip (12) with the income light side of light guide plate (13) sets up relatively, be equipped with a plurality of fixed blocks (131) on light guide plate (13), optics diaphragm (14) are equipped with a plurality of fixed slots (101), each fixed block (131) set up respectively in each in fixed slot (101), shading unit and each fixed block (131) correspond the setting, shading unit is used for sheltering from the light that fixed block (131) jetted out.
2. The backlight module as claimed in claim 1, wherein the light shielding unit comprises a plurality of light shielding covers (151), and each light shielding cover (151) is sleeved on each fixing block (131).
3. The backlight module of claim 1, wherein the light shielding unit comprises a plurality of light shielding films (152), and the light shielding films (152) are adhered to the upper surface of the optical film (14) and cover the fixing blocks (131).
4. The backlight module for preventing light blocking of a light guide plate as claimed in claim 1, wherein the light blocking unit comprises a plurality of light blocking layers (153), the fixing block (131) comprises a top surface (131a) and a first side surface (131b), the top surface (131a) is parallel to the surface of the light guide plate (13), the first side surface (131b) is parallel to the light incident side, and the light blocking layers (153) are attached to the top surface (131a) and the first side surface (131 b).
5. The backlight module of claim 4, wherein the fixing block (131) further comprises a second side surface, a third side surface and a fourth side surface, the second side surface is opposite to the first side surface (131b), the third side surface is opposite to the fourth side surface, the first side surface (131b) and the second side surface are connected to the third side surface and the fourth side surface, and the light shielding layer (153) is attached to the second side surface, the third side surface and the fourth side surface.
6. The backlight module for preventing the occurrence of the bright blocks of the light guide plate as claimed in any one of claims 1 to 5, wherein the light bar (12) comprises a plurality of light sources, and the fixed block (131) is disposed between two adjacent light sources.
7. The backlight module for preventing the occurrence of the bright spots on the light guide plate as claimed in any one of claims 1 to 5, wherein the length of the fixing block (131) is 1mm to 4mm, and the width of the fixing block (131) is 1mm to 4 mm.
8. The backlight module according to any one of claims 1 to 5, wherein a limiting block (132) is disposed on a side of the light guide plate (13) away from the optical film (14), the bezel (11) comprises a bottom plate, a limiting groove corresponding to the limiting block (132) is disposed on the bottom plate, and the limiting block (132) is engaged with the limiting groove to fix the light guide plate (13) on the bottom plate.
9. The backlight module for preventing occurrence of bright spots on a light guide plate according to claim 8, further comprising a reflective film (16), wherein the reflective film (16) is disposed inside the bezel (11), and the reflective film (16) is disposed between the bottom plate and the light guide plate (13).
10. A vehicle-mounted display device, comprising the backlight module for preventing bright blocks of the light guide plate according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123347108.2U CN216487085U (en) | 2021-12-28 | 2021-12-28 | Backlight module for preventing light guide plate from generating bright blocks and vehicle-mounted display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123347108.2U CN216487085U (en) | 2021-12-28 | 2021-12-28 | Backlight module for preventing light guide plate from generating bright blocks and vehicle-mounted display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216487085U true CN216487085U (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123347108.2U Active CN216487085U (en) | 2021-12-28 | 2021-12-28 | Backlight module for preventing light guide plate from generating bright blocks and vehicle-mounted display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216487085U (en) |
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2021
- 2021-12-28 CN CN202123347108.2U patent/CN216487085U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Backlight module and on-board display device to prevent light guide plate from appearing bright blocks Effective date of registration: 20221026 Granted publication date: 20220510 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: SHENZHEN HADBEST ELECTRONICS CO.,LTD. Registration number: Y2022980019651 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231219 Granted publication date: 20220510 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: SHENZHEN HADBEST ELECTRONICS CO.,LTD. Registration number: Y2022980019651 |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 floor 1, 2-4, and floor 1-3, No. 222-2, Buxin Road, Xinlan community, Guanlan street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Handamei Electronics Co.,Ltd. Country or region after: China Address before: 518000 floor 1, 2-4, and floor 1-3, No. 222-2, Buxin Road, Xinlan community, Guanlan street, Longhua District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN HADBEST ELECTRONICS CO.,LTD. Country or region before: China |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Backlight module and onboard display device to prevent bright blocks from appearing on the light guide plate Granted publication date: 20220510 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: Shenzhen Handamei Electronics Co.,Ltd. Registration number: Y2024980007322 |