LGP princips un attīstība

The light guide plate changes the light propagation direction by using the diffusion dots distributed on the bottom surface, and diffuses the light from the line light source or point light source on the side to the whole panel, so that the illumination of the output surface of the light guide plate is uniform. This process mainly involves the propagation of light and the measurement of optical quantity, so the research of light guide plate mainly involves geometric optics and photometry.

The light guide plate is an important component of the side light backlight. Its function is to convert the point light source or line light source placed on the side into the area light source uniformly emitted from the front by guiding the light propagation direction. The performance of the light guide plate largely determines the performance of the backlight. Therefore, with the expansion of the market demand for LED side light backlight, the requirements for the performance of light guide plate will continue to improve. The light guide plate is made of PMMA, and its bottom surface needs special processing to form a certain structure. In practical application, the bottom structure of light guide plate needs to be designed according to the arrangement of light sources. The design and manufacture of light guide plate involves optical design, mold etching, printing and other precision technologies.