What is the role of the light guide plate? What is the structure

The main function of the LED light guide plate is to guide the light source entering from the side into a plane to emit light. At present, it is mainly made of PMMA (acrylic tree finger) as the raw material.

  The small dot printing light guide plate is a method of small dot printing on the reflective layer of the diffuser on the inner surface of the light guide plate, which can diffuse the light source emitted by the lamp tube.

 Non-printed light guide plate uses various different processing methods during injection molding to utilize the light source in the light guide plate by reflection, refraction, scattering, etc.

Prism film: The function of the prism film is to bend the light emitted by the diffuser in a certain direction. (Limited to X or Y direction). The groove direction of 3M products is at right angles (90), so it can allow X and Y directions to be overlapped. The light produces a certain direction of refraction. The role of the prism sheet is to increase (concentrate) the brightness of the component.

Diffusion sheet: The function of the diffuser sheet is to diffuse the light emitted by the light guide plate and isolate the prism VVV sheet from being sensitive to heat. In addition, it can also cover the shape of the dots. At present, it is mainly coated with special materials on PET, causing fog The visual effect of the state. Diffusion film: increase uniformity (at the same time reduce brightness). The upper diffuser has the function of protecting the prism film (to prevent the prism film from being scratched) and the polarizing plate.