The module which provides the light source is usually called backlight module (BLM) and a cold cathode fluorescent lamp (CCFL) is used as the light source, which is placed behind the panel of the LCD.

• 通常光源以使用冷阴极萤光灯管为主，又因此光源置于液晶显示器后方，故此光源装置就称为“背光模组”。