As a passive component, it is a DISPLAY that uses liquid that is in the intermediate phase between solid and liquid. It controls the brightness of the screen by adjusting how much the amount of light, emitted by the backlight, passes through by changes in the voltage

Located in the back of the liquid crystal panel, which has no self-luminescent capabilities, BLU is luminous equipment that emits uniform planar light in the direction of the panel.

Types: categorized into Edge Type, where the light source is located on the side of the Light Guide Plate, and Direct Type, where the light source is located on the bottom of the Diffuser Plate.

Structures: