Views: 0 Author: Site Editor Publish Time: 2022-05-04 Origin: Site
In the last century, the application of optics has made great progress. Humans observe the world through light, and the role of light appears to be both universal and basic in our lives. As we enter the 21st century, light will also influence our lives with a new attitude and will play a more important role. Cars can meet people's travel needs in life and work. With the improvement of people's living standards, the requirements for automobile performance are becoming more comprehensive. Not only is the car required to fully exert its "foot" function, it must also develop sensory functions equivalent to "ears" and "eyes" that can sense the situation outside the car in a timely manner. The "visual" and "auditory" functions that can detect and record a large amount of information in real time and make it processed in time. And the car display panel made of light guide plate has already satisfied human’s requirements.
Here is the list of the article:
What is the working principle of the light guide plate?
What is the structure of the light guide plate?
What is the manufacturing process of the car display panel?
Many cars now have smart displays. The smart display has multiple functions such as navigation, playing music, and answering calls. The basis for realizing smart display is the application of light guide plates. The role of the light guide plate is to convert the light emitted by the side-emitting LED into a surface light source in the direction required by the design. The principle of the light guide plate is to use the serration structure of the light entrance part and the bottom dots to refract or reflect all the light emitted by the LED, change the direction of light propagation, and use the light efficiently.
The side that is attached to the diffusion film can be smooth, polished, discharge or V-CUT depending on the post-processing. At present, most of the smooth surfaces are used, no post-processing is required, and the cost is low, but the surface is easily scratched, and it is not convenient to transport during production. The ground surface is processed with a grinding wheel after injection molding of the light guide plate, and the discharge surface is polished after discharge, and the effect is like frosted glass. The V-CUT (precision mechanical depiction) is to engrave V-shaped grooves on the light surface of the light guide plate, which can gather light in a certain direction, thereby achieving the effect of improving the brightness.
The side that is attached to the reflective film is a dot surface, and the dot structure has hemispherical, conical, pyramidal and prism shapes. The most widely used are hemispherical dots. Generally, there are 300,000 to 1.2 million dots in the plane. The farther away from the light source, the larger the dot, and the closer the distance between the dots. The size and position of the dots are designed by optical simulation, and their function is to destroy the total reflection of the side light in the light guide plate, so that the light can be emitted perpendicularly from the smooth surface. The better the dot design, the more light that can be emitted from the front of the light guide plate, the higher the backlight brightness.
The manufacturing process of the display panel can be divided into three stages: the front-end array process (Array), the middle-stage boxing process (Cell), and the back-end module assembly process (Module). The back-end module assembly process is a production operation in which the panel glass is laminated and cut in the box-forming process, and other components such as backlight plates (LCD proprietary), circuits, outer frames and other components are assembled.
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