BLU is one of the main parts of LCM. The effect of BLU is to ensure the normal image by supplying sufficient brightness and distributing light source equally. Backlight is a light source located in the back side of LCD, and its radiation effect influences directly to LCM's visual effect.
Liquid crystal itself does not radiate but figures and letter symbols are showed in result of ray control. BLU is mainly used in producing liquid crystal display and electronic goods such as laptop and pad.

BLU NBPC"