Principle Of Led Backlight Guide Plate
May 09, 2022
LED backlight manufacturing, from the acrylic resin to make light guide plate, and then in the light guide plate to make light scattering white dot pattern, and then attached reflection film sheet, diffusion sheet, prismatic film sheet and other optical film sheet, and assembly, after assembling LED light reflector, etc., assembly completed backlight.
LED SMD lamp backlight needs to be SMD lamp emitted light, in the light guide plate total reflection while propagating forward, the bottom of the light guide plate reflection point pattern has a regular change, the angle of incidence is less than the total reflection angle part of the light can be shot from the upper surface of the light guide plate, the line light source into a surface light source.
The reflective dots at the bottom of the light guide plate, formed by screen printing method of white dot pattern, in the part near the light, the dot diameter is small and the number is small; in the part far from the light, the dot diameter is large and the number is large; and in the part far from the light, because the reflective diaphragm is set, so the dot diameter is slightly smaller and the number is slightly less. So set to ensure that the entire display brightness uniform.
