CN115047557B - Light guide plate with high refractive index - Google Patents
Light guide plate with high refractive index Download PDFInfo
- Publication number
- CN115047557B CN115047557B CN202210699866.0A CN202210699866A CN115047557B CN 115047557 B CN115047557 B CN 115047557B CN 202210699866 A CN202210699866 A CN 202210699866A CN 115047557 B CN115047557 B CN 115047557B
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- CN
- China
- Prior art keywords
- plate
- fixedly connected
- light guide
- sealing
- sealing plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- 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
- G02B6/0085—Means for removing heat created by the light source from the package
-
- 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
-
- 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
- G02B6/0093—Means for protecting the light guide
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to the technical field of light guide plates, in particular to a light guide plate with high refractive index, which comprises a refractive plate, wherein a refractive surface of the refractive plate is fixedly connected with trapezoid light guide net points, the rear part of the refractive plate is fixedly connected with a pattern plate, the rear part of the pattern plate is provided with an auxiliary refractive device, and the auxiliary refractive device comprises: the electric push rod is fixed in the sealing plate, and the hydraulic plate is clamped on the output shaft of the electric push rod; the surface of the air pressure plate slides the inner wall of the sealing plate; and the bottom of the spray head is fixed with the top of the sealing plate and used for aligning the refraction plate for cleaning. According to the invention, the round lattice points on the light guide plate in the prior art are changed into pyramid shapes through the trapezoid light guide lattice points, the refractive index of light is greatly improved, when the light guide plate works, certain heat can be generated by long-term lamplight irradiation, and the whole pattern plate is cooled through cooling oil in the back sealing plate of the pattern plate.
Description
Technical Field
The invention relates to the technical field of light guide plates, in particular to a light guide plate with high refractive index.
Background
The light guide plate is made of optical acrylic and PC plates, then high-tech materials with extremely high reflectivity and no light absorption are used, the optical acrylic plates are used for absorbing the light emitted from the lamp to stay on the surfaces of the optical acrylic plates, when the light rays are emitted to all light guide points, the reflected light can be diffused towards all angles, then the reflection conditions are destroyed to be emitted from the front surface of the light guide plate, the light guide plate can uniformly emit light through all light guide points with different densities and sizes, and the reflecting sheet is used for reflecting the light exposed from the bottom surface back into the light guide plate so as to improve the use efficiency of the light.
The light guide plate is generally made of a plastic plate or a sheet, the light incident points are arranged on one side or the periphery of the light guide plate, and the light source is refracted and scattered through the concave-convex points, so that the light source becomes soft and uniform, and the refractive index of the circular or elliptical lattice points on the light guide plate in the prior art is not high during the refraction and scattering of the light source; in view of this, we propose a light guide plate with a high refractive index.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the light guide plate with high refractive index, and solves the problems in the background art.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a light guide plate that refracting index is high, includes the refracting plate, the refracting surface fixedly connected with trapezoidal light guide screen dot of refracting plate, the rear portion fixedly connected with checkered plate of refracting plate, the rear portion of checkered plate is provided with supplementary refracting device, supplementary refracting device includes:
the front part of the sealing plate is fixed with the rear part of the checkered plate, the electric push rod is fixed in the sealing plate, and the output shaft of the electric push rod is clamped with the hydraulic plate;
the surface of the air pressure plate slides the inner wall of the sealing plate and is used for isolating gas and liquid;
the top of closing plate is fixed to the bottom of shower nozzle, and be used for aiming at the refracting plate and carry out pneumatic cleaning.
Preferably, the surface sliding connection closing plate's of hydraulic pressure board inner wall, the top fixedly connected with reset spring of air pressure board, the inside of closing plate is fixed on reset spring's top.
Preferably, the inside of shower nozzle fixedly connected with one-way air outlet valve to be used for the inside intercommunication closing plate's of shower nozzle inside.
Preferably, the two sides of the sealing plate are fixedly connected with one-way air inlet pipes, the end parts of the one-way air inlet pipes are fixedly connected with filter plates, and the surfaces of the filter plates are fixedly connected with the inside of the sealing plate.
Preferably, the surface of the refraction plate is provided with a light source cutting opening, and the interior of the checkered plate is provided with a light source clamping interface.
Preferably, the auxiliary refraction device further comprises an inserting block, the surface of the inserting block slides into the pattern plate, a connecting sliding rod is fixedly connected with the surface of the inserting block, a pressing plate is fixedly connected with one end, away from the inserting block, of the connecting sliding rod, and a limiting spring is fixedly connected with one side, close to the pattern plate, of the pressing plate.
Preferably, the surface of the connecting sliding rod slides inside the checkered plate, the connecting sliding rod is positioned inside the limiting spring, and the end part of the limiting spring is used for fixing the surface of the checkered plate.
Preferably, the surface of the pressing plate is fixedly connected with a protective cover, and the protective cover is far away from the surface of the fixed pattern plate on one side of the pressing plate and is used for sealing and protecting the connecting sliding rod and the limiting spring.
Preferably, an elastic clamping block is fixedly connected inside the light source clamping interface, four sides of the elastic clamping block are arranged to be cambered surfaces, and the elastic clamping block is used for fixing the light source clamping piece in an extrusion mode.
It can be seen from the above technical solutions that the light guide plate with high refractive index provided in the embodiments of the present specification has at least the following beneficial effects:
(1) The invention changes the circular or elliptical lattice points on the light guide plate in the prior art into pyramid shapes through the trapezoid light guide lattice points, greatly improves the refractive index of light, generates certain heat after long-term lamplight irradiation when the light guide plate works, and carries out cooling treatment on the whole pattern plate through cooling oil in the back sealing plate of the pattern plate.
(2) According to the invention, the hydraulic plate is driven to slide in the sealing plate by the electric push rod, the hydraulic plate extrudes cooling liquid in the sealing plate and extrudes gas at the upper part of the sealing plate by the air pressure plate, the extruded gas enters the spray head through the one-way air outlet valve and is dispersed and blown out from the nozzle in the spray head, the blown gas is blown to the surface of the refraction plate, the effect of blowing and cleaning the surface of the refraction plate and the surface of the trapezoid light guide net point is achieved, and the phenomenon that the adhesion of dust and impurities influences the refraction of light is avoided.
(3) According to the invention, the light source on the checkered plate is fixedly installed through the light source cutting opening and the light source clamping interface, the elastic fixed pressing plate is utilized to drive the inserting block to move, so that the effect of rapid installation and disassembly is achieved, meanwhile, the installation stability can be ensured, the refraction stability of the light guide plate is ensured, the four sides of the elastic clamping block are arranged to be cambered surfaces, the elastic deformation can be carried out, the elastic clamping block is used for extruding and fixing the light source clamping piece, and the installation stability of the light source clamping piece is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, illustrate and together with the description serve to explain a part of the application:
FIG. 1 is a schematic overall structure of the present invention;
FIG. 2 is a schematic view of a portion of an auxiliary refraction device according to the present invention;
FIG. 3 is a schematic view of the structure of the air pressure plate in the present invention;
FIG. 4 is a schematic view of the structure of a spray head according to the present invention;
FIG. 5 is a schematic view of the structure of the checkered plate according to the present invention;
FIG. 6 is a schematic cross-sectional view of a protective cover according to the present invention.
In the figure: 1. a refractive plate; 2. trapezoid light guide net points; 3. pattern plate; 4. an auxiliary refraction device; 41. a sealing plate; 411. a one-way air inlet pipe; 412. a filter plate; 42. an electric push rod; 43. a hydraulic plate; 44. an air pressure plate; 441. a return spring; 45. a spray head; 451. a one-way air outlet valve; 46. inserting blocks; 47. connecting a slide bar; 48. pressing the plate; 481. a protective cover; 49. a limit spring; 5. a light source cut-in port; 6. a light source card interface; 61. and an elastic clamping block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the present invention provides the following technical solutions:
the utility model provides a light guide plate that refracting index is high, including refracting plate 1, refracting surface fixedly connected with trapezoidal light guide net point 2 of refracting plate 1, change circular or oval net point on the light guide plate among the prior art into the pyramid shape, the big vice refractive index that improves light, the rear portion fixedly connected with checkered plate 3 of refracting plate 1, the rear portion of checkered plate 3 is provided with supplementary refraction device 4, light source cut-in port 5 has been seted up on the surface of refracting plate 1, the light source installation of being convenient for, light source card interface 6 has been seted up to the inside of checkered plate 3, supplementary refraction device 4 includes:
The sealing plate 41, the rear part of the checkered plate 3 is fixed at the front part of the sealing plate 41, a groove is formed in the sealing plate 41, cooling liquid is filled in the groove, the cooling effect is achieved on the light guide plate in the working period, the electric push rod 42 is fixed in the sealing plate 41, and the hydraulic plate 43 is clamped on the output shaft of the electric push rod 42;
The air pressure plate 44, the surface of the air pressure plate 44 slides the inner wall of the sealing plate 41 and is used for isolating gas and liquid, the cooling liquid is positioned between the air pressure plate 44 and the hydraulic plate 43, the surface of the hydraulic plate 43 is connected with the inner wall of the sealing plate 41 in a sliding manner, the top of the air pressure plate 44 is fixedly connected with the reset spring 441, the top end of the reset spring 441 is fixedly connected with the inside of the sealing plate 41 and is used for elastically fixing the air pressure plate 44, so that the air pressure plate 44 is reset by the elasticity of the spring under the condition of not being subjected to hydraulic pressure;
The shower nozzle 45, the top of the fixed closing plate 41 in bottom of shower nozzle 45 is used for aiming at refraction board 1 and carries out the atmospheric pressure cleanness, trapezoidal light guide screen dot 2 also is more easily accumulated the dust simultaneously increasing the refracting index, the refraction of light also can be influenced by granular tiny impurity, start electric putter 42 when the light guide plate is out of service, make shower nozzle 45 blowout gas clean refraction board 1 surface, reach the purpose that improves the refracting effect, the inside fixedly connected with check valve 451 of shower nozzle 45, and be used for the inside intercommunication closing plate 41 of shower nozzle 45.
Both sides of the sealing plate 41 are fixedly connected with a unidirectional air inlet pipe 411 and are used for unidirectional air inlet, so that the balance of air in the sealing plate 41 is guaranteed, the end part of the unidirectional air inlet pipe 411 is fixedly connected with a filter plate 412, the filter plate 412 filters the sucked air, particulate matters and impurities are prevented from entering, and the surface of the filter plate 412 is fixed inside the sealing plate 41.
In this embodiment, the auxiliary refraction device 4 further includes an insert 46, the surface of the insert 46 slides inside the checkered plate 3, the insert 46 is used for penetrating through the installation position of the light source and performing stable fixation, the surface of the insert 46 is fixedly connected with a connecting slide bar 47, one end of the connecting slide bar 47 far away from the insert 46 is fixedly connected with a pressing plate 48, and one side of the pressing plate 48 close to the checkered plate 3 is fixedly connected with a limiting spring 49; the inside of connecting slide bar 47's surface slip checkered plate 3, the inside that connects slide bar 47 and be located spacing spring 49, the fixed checkered plate 3's of tip of spacing spring 49 surface reaches the stable effect of guarantee light source spare installation through the position of insert 46 on the elastic fixation connection slide bar 47, and the mode of elastic fixation has the controllability simultaneously, can dismantle fast.
Further, the protecting cover 481 is fixedly connected to the surface of the pressing plate 48, and the protecting cover 481 is far away from the surface of the pressing plate 48 where the patterned plate 3 is fixed, and is used for sealing and protecting the connecting sliding rod 47 and the limiting spring 49, and meanwhile, the protecting cover 481 has elasticity and can be elastically deformed along with the movement of the pressing plate 48.
Still further, the inside fixedly connected with elasticity fixture block 61 of light source draw-in interface 6, the four sides of elasticity fixture block 61 set up to the cambered surface, can carry out elastic deformation to be used for carrying out extrusion fixed to the light source fastener, improve the stability of light source installation.
When the light guide plate with high refractive index is used, the light guide plate comprises the refractive plate 1 and the pattern plate 3, a light source irradiates the trapezoid light guide net points 2 on the refractive plate 1 from the side surface, round or elliptic net points on the light guide plate in the prior art are changed into pyramid shapes, the refractive index of light is greatly improved, when the light guide plate works, long-term light irradiation can generate certain heat, cooling oil in the rear sealing plate 41 of the pattern plate 3 is used for cooling the whole pattern plate 3, when the light guide plate does not work, the electric push rod 42 is controlled to work, the output shaft of the electric push rod 42 drives the hydraulic plate 43 to slide in the sealing plate 41, the hydraulic plate 43 extrudes cooling liquid in the sealing plate 41 during sliding, the liquid is extruded to the gas at the upper part of the sealing plate 41 through the air pressure plate 44 after being extruded, the extruded gas enters the spray nozzle 45 through the one-way air outlet valve 451 and is dispersed and blown out from the spray nozzle in the spray nozzle 45, the blown gas is blown to the surface of the refraction plate 1, the effect of blowing cleaning the surface of the refraction plate 1 and the surface of the trapezoid light guide net point 2 is achieved, the refraction of light is avoided due to the adhesion of dust impurities, meanwhile, when the electric push rod 42 drives the hydraulic plate 43 to reset, the air pressure plate 44 moves and resets through the reset spring 441, the suction force generated during reset is used for air intake through the one-way air inlet pipe 411, the filter plate 412 filters the sucked gas, the entry of particles and impurities is avoided, and the balance of the gas in the sealing plate 41 is ensured to facilitate the subsequent blowing cleaning of the refraction plate 1 for a plurality of times; simultaneously carry out fixed mounting through light source cutting entry 5 and light source interface 6 to the light source on the checkered plate 3, press the board 48 earlier, press the board 48 to drive the inserted block 46 through connecting slide bar 47 and slide in the interface, and make it keep away from the interface, insert the light source piece installation site in the interface this moment, it is fixed to carry out preliminary extrusion through the elasticity fixture block 61 in the interface, at the release, make it remove through the elasticity of spacing spring 49 and reset, the inserted block 46 runs through the light source piece installation site and pegging graft and fix it in the interface during reset, reach the effect of quick installation and dismantlement, simultaneously can ensure the stability of installation, ensure the stability of light guide plate refraction work.
The above embodiments are only for illustrating the embodiments of the present invention, but not for limiting the embodiments of the present invention, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the embodiments of the present invention, so that all equivalent technical solutions also fall within the scope of the embodiments of the present invention, and the scope of the embodiments of the present invention should be defined by the claims.
Claims (2)
1. The utility model provides a light guide plate that refracting index is high, includes refracting plate (1), its characterized in that: the refraction face fixedly connected with trapezoidal light guide screen point (2) of refracting plate (1), the rear portion fixedly connected with checkered plate (3) of refracting plate (1), the rear portion of checkered plate (3) is provided with supplementary refraction device (4), supplementary refraction device (4) include:
The device comprises a sealing plate (41), wherein the front part of the sealing plate (41) is fixed with the rear part of a checkered plate (3), an electric push rod (42) is fixed in the sealing plate (41), and a hydraulic plate (43) is clamped on an output shaft of the electric push rod (42);
a gas pressure plate (44), the surface of the gas pressure plate (44) sliding against the inner wall of the sealing plate (41) and separating gas from liquid;
the bottom of the spray head (45) is fixed with the top of the sealing plate (41) and is used for aligning the refraction plate (1) for air pressure cleaning;
The surface of the hydraulic plate (43) is connected with the inner wall of the sealing plate (41) in a sliding manner, the top of the air pressure plate (44) is fixedly connected with a reset spring (441), and the top end of the reset spring (441) is fixed in the sealing plate (41);
The inside of the spray head (45) is fixedly connected with a one-way air outlet valve (451) and is used for communicating the inside of the spray head (45) with the inside of the sealing plate (41);
the two sides of the sealing plate (41) are fixedly connected with a one-way air inlet pipe (411), the end part of the one-way air inlet pipe (411) is fixedly connected with a filter plate (412), and the surface of the filter plate (412) is fixedly connected with the inside of the sealing plate (41);
The surface of the refraction plate (1) is provided with a light source cutting opening (5), and the interior of the checkered plate (3) is provided with a light source clamping interface (6);
The auxiliary refraction device (4) further comprises an inserting block (46), the surface of the inserting block (46) slides into the pattern plate (3), a connecting sliding rod (47) is fixedly connected to the surface of the inserting block (46), a pressing plate (48) is fixedly connected to one end, far away from the inserting block (46), of the connecting sliding rod (47), and a limiting spring (49) is fixedly connected to one side, close to the pattern plate (3), of the pressing plate (48);
The surface of the connecting sliding rod (47) slides into the interior of the checkered plate (3), the connecting sliding rod (47) is positioned in the limit spring (49), and the end part of the limit spring (49) is fixed on the surface of the checkered plate (3);
The surface of the pressing plate (48) is fixedly connected with a protective cover (481), and the surface of the checkered plate (3) is fixed on one side, far away from the pressing plate (48), of the protective cover (481) and is used for sealing and protecting the connecting sliding rod (47) and the limiting spring (49).
2. A high refractive index light guide plate according to claim 1, wherein: the inside fixedly connected with elasticity fixture block (61) of light source draw-in interface (6), the four sides of elasticity fixture block (61) set up to the cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210699866.0A CN115047557B (en) | 2022-06-20 | 2022-06-20 | Light guide plate with high refractive index |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210699866.0A CN115047557B (en) | 2022-06-20 | 2022-06-20 | Light guide plate with high refractive index |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115047557A CN115047557A (en) | 2022-09-13 |
| CN115047557B true CN115047557B (en) | 2024-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210699866.0A Active CN115047557B (en) | 2022-06-20 | 2022-06-20 | Light guide plate with high refractive index |
Country Status (1)
| Country | Link |
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| CN (1) | CN115047557B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100660047B1 (en) * | 2005-12-01 | 2006-12-20 | 제일모직주식회사 | LIGHT GUIDE FOR LIQUID CRYSTAL DISPLAY BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY COMPRISING THE SAME |
| JP2009032664A (en) * | 2007-06-25 | 2009-02-12 | Fujifilm Corp | Planar lighting apparatus |
| CN206421059U (en) * | 2017-02-09 | 2017-08-18 | 东莞市标星光电科技有限公司 | A kind of high radiating light guide plate |
| CN110917560A (en) * | 2019-12-11 | 2020-03-27 | 陈佳丽 | Strength of arm with from heat dissipation function |
| CN212509484U (en) * | 2020-06-30 | 2021-02-09 | 常州海川卓越密封材料有限公司 | High-pressure-resistant bidirectional O-shaped sealing ring convenient to install |
| CN214335279U (en) * | 2020-11-30 | 2021-10-01 | 惠州市富佳胜电子技术有限公司 | High heat dissipation light guide plate module |
| CN113985654A (en) * | 2021-10-21 | 2022-01-28 | 合肥泰沃达智能装备有限公司 | Display device with controllable light guide plate |
-
2022
- 2022-06-20 CN CN202210699866.0A patent/CN115047557B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100660047B1 (en) * | 2005-12-01 | 2006-12-20 | 제일모직주식회사 | LIGHT GUIDE FOR LIQUID CRYSTAL DISPLAY BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY COMPRISING THE SAME |
| JP2009032664A (en) * | 2007-06-25 | 2009-02-12 | Fujifilm Corp | Planar lighting apparatus |
| CN206421059U (en) * | 2017-02-09 | 2017-08-18 | 东莞市标星光电科技有限公司 | A kind of high radiating light guide plate |
| CN110917560A (en) * | 2019-12-11 | 2020-03-27 | 陈佳丽 | Strength of arm with from heat dissipation function |
| CN212509484U (en) * | 2020-06-30 | 2021-02-09 | 常州海川卓越密封材料有限公司 | High-pressure-resistant bidirectional O-shaped sealing ring convenient to install |
| CN214335279U (en) * | 2020-11-30 | 2021-10-01 | 惠州市富佳胜电子技术有限公司 | High heat dissipation light guide plate module |
| CN113985654A (en) * | 2021-10-21 | 2022-01-28 | 合肥泰沃达智能装备有限公司 | Display device with controllable light guide plate |
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| Publication number | Publication date |
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| CN115047557A (en) | 2022-09-13 |
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