Ultra-thin optical diffusion plate of vehicle-mounted LED backlight source
By setting reflective tape and positioning protruding bayonet structure on the light guide plate, the problem of difficulty in positioning the film of the light diffusion plate is solved, and rapid assembly and improved light utilization are achieved, while maintaining stability in a vibrating environment.
Patent Information
- Application Number
- CN202422818646.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-19
AI Technical Summary
When assembling existing light diffusion plates, it is difficult to position DBEF films, light-enhancing films and diffusion films, resulting in low production efficiency.
The light guide plate is equipped with reflective adhesive strips and positioning protrusions and bayonet structures, combined with fixing adhesives, to achieve rapid positioning and assembly of the film.
The assembly efficiency of the film is improved, the light utilization rate and illumination intensity are enhanced, and the film position is stable under vibration.
Smart Images
Figure CN223260002U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical diffusion plates, in particular to an ultra-thin optical diffusion plate for a vehicle-mounted LED backlight source. Background Art
[0002] Light diffusers, also known as light-diffusing plates or light-expanding plates, are important components in the fields of LED lighting and flat-panel displays due to their high light diffusion, high light transmittance, and ability to effectively block light sources. Light diffusers can block light from passing through them. Generally, the better the light diffusion properties of a light diffuser, the lower its light transmittance.
[0003] The DBEF film, brightness enhancement film and diffusion film of the existing light diffusion plate are difficult to position during assembly, resulting in a long positioning time and affecting production efficiency. Therefore, an ultra-thin optical diffusion plate for automotive LED backlight is proposed. Utility Model Content
[0004] In order to solve at least one of the above-mentioned technical shortcomings, the utility model provides an ultra-thin optical diffusion plate for a vehicle-mounted LED backlight source, including a DBEF film, a light-enhancing film, a diffusion film, a light guide plate and a reflective film. The upper surface of the reflective film is assembled with a light guide plate, the upper surface of the light guide plate is positioned and assembled with a diffusion film, the upper surface of the diffusion film is positioned and assembled with a light-enhancing film, the upper surface of the light-enhancing film is positioned and assembled with a DBEF film, and fixing glue is provided between adjacent gaps of the DBEF film, the light-enhancing film and the diffusion film near the light source.
[0005] Furthermore, reflective tapes are provided on the three side surfaces of the light guide plate away from the light source.
[0006] Furthermore, three positioning protrusions are provided on the edge of the upper surface of the light guide plate near the light source, and the edges of the DBEF film, the brightness enhancement film and the diffusion film are all provided with positioning slots that fit with the positioning protrusions. Beneficial effects
[0007] The DBEF film, the brightness enhancement film and the diffusion film are positioned and assembled on the light guide plate, so that the DBEF film, the brightness enhancement film and the diffusion film can be quickly positioned and assembled, thereby improving production efficiency;
[0008] When the light source enters from one side of the light guide plate, the reflective tape can prevent the light from escaping from the three sides away from the light source, thereby improving the utilization rate of light and the light intensity. In addition, the reflective tape can be used to fix the light guide plate for a second time.
[0009] The positioning protrusions on the upper surface of the light guide plate fit into the positioning bayonet, so that the DBEF film, the light-enhancing film and the diffusion film can be quickly positioned during assembly, thereby improving assembly production efficiency. At the same time, the positioning protrusions fit into the positioning bayonet to limit the DBEF film, the light-enhancing film and the diffusion film, so that in the event of severe vibration of the entire film, the DBEF film, the light-enhancing film and the diffusion film will not be displaced.
[0010] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is an overall axonometric drawing of the present invention.
[0012] Figure 2 It is an overall exploded view of the present invention.
[0013] Figure 3 This is an axonometric view of the positioning protrusion of the present utility model.
[0014] Figure 4 This is an axonometric drawing of the positioning bayonet of the present utility model.
[0015] exist Figures 1 to 4 The corresponding relationship between the component names or lines and the figure numbers is: DBEF film 1, brightness enhancement film 2, diffusion film 3, light guide plate 4, reflective tape 401, positioning protrusion 402, reflective film 5, fixing glue 6, positioning bayonet 7. DETAILED DESCRIPTION
[0016] Please refer to Figures 1 to 4 ;
[0017] This embodiment provides an ultra-thin optical diffuser plate for an automotive LED backlight, comprising a DBEF film 1, a brightness enhancement film 2, a diffuser film 3, a light guide plate 4, and a reflective film 5. The reflective film 5 is assembled with the light guide plate 4 on its upper surface, the diffuser film 3 is positioned and assembled with the brightness enhancement film 2 on its upper surface, and the DBEF film 1 is positioned and assembled with the brightness enhancement film 2 on its upper surface. Adhesive 6 is provided between adjacent gaps of the DBEF film 1, brightness enhancement film 2, and diffuser film 3 near the light source.
[0018] In specific implementation, the DBEF film 1 , the brightness enhancement film 2 and the diffusion film 3 are positioned and assembled on the light guide plate 4 , so that the DBEF film 1 , the brightness enhancement film 2 and the diffusion film 3 can be quickly positioned and assembled, thereby improving production efficiency.
[0019] Furthermore, reflective tapes 401 are provided on the three sides of the light guide plate 4 away from the light source;
[0020] In a specific implementation, when the light source is incident from one side of the light guide plate 4, the reflective tape 401 can prevent the light from escaping from the three sides away from the light source, thereby improving the utilization rate of the light and the intensity of the light. The reflective tape can also be used to fix the light guide plate 4 for a second time (fixed on the device housing).
[0021] Furthermore, three positioning protrusions 302 are provided on the edge of the upper surface of the light guide plate 4 near the light source, and the edges of the DBEF film 1, the brightness enhancement film 2 and the diffusion film 3 are all provided with positioning notches 8 that fit with the positioning protrusions 302;
[0022] During specific implementation, the positioning protrusion 302 on the upper surface of the light guide plate 4 fits with the positioning bayonet 8, so that the DBEF film 1, the brightness enhancement film 2 and the diffusion film 3 can be quickly positioned during assembly, thereby improving assembly production efficiency. At the same time, the positioning protrusion 302 fits with the positioning bayonet 8 to limit the DBEF film 1, the brightness enhancement film 2 and the diffusion film 3, so that in the event of severe vibration of the entire film, the DBEF film 1, the brightness enhancement film 2 and the diffusion film 3 will not be displaced.
Claims
1. An ultra-thin optical diffuser plate for a vehicle-mounted LED backlight source, comprising a DBEF film (1), a light-enhancing film (2), a diffuser film (3), a light guide plate (4) and a reflective film (5), characterized in that: The upper surface of the reflective film (5) is assembled with a light guide plate (4), the upper surface of the light guide plate (4) is positioned and assembled with a diffusion film (3), the upper surface of the diffusion film (3) is positioned and assembled with a light-enhancing film (2), the upper surface of the light-enhancing film (2) is positioned and assembled with a DBEF film (1), and fixing glue (6) is provided between adjacent gaps of the DBEF film (1), the light-enhancing film (2) and the diffusion film (3) near the light source.
2. The ultra-thin optical diffuser plate for a vehicle-mounted LED backlight according to claim 1, characterized in that: Reflective adhesive strips (401) are provided on the three side surfaces of the light guide plate (4) away from the light source.
3. The ultra-thin optical diffuser plate for a vehicle-mounted LED backlight according to claim 2, characterized in that: Three positioning protrusions (302) are provided on the edge of the upper surface of the light guide plate (4) close to the light source, and positioning slots (8) that fit with the positioning protrusions (302) are provided on the edges of the DBEF film (1), the brightness enhancement film (2) and the diffusion film (3).