Definition Of LED Backlight

The Chinese interpretation of backlight is "the light cannot be directly illuminated" or "avoid the direct exposure of the light".

In the electronics industry, backlighting is a form of lighting that is often used on LCD displays. The difference between the backlight type and the front light type is that the backlight is illuminated from the side or behind, while the front light is illuminated from the front as the name suggests. They are used to increase illumination in low-light environments and to brighten computer monitors, LCD screens, and produce light in a similar manner to CRT displays.

The light source may be incandescent light bulb, electro-optic panel (ELP), light emitting diode (LED), cold cathode tube (CCFL) and so on. Electro-optical panels provide uniform light across the surface, while other backlight modules use diffusers to provide uniform light from uneven sources.

The backlight can be any color, and the monochrome liquid crystal usually has a backlight such as yellow, green, blue, and white. The color display uses white white light because it covers the most color light.

LED backlights are used in small, inexpensive LCD panels. His light is usually colored, although white backlighting has become more common. Electro-optical panels are often used on large displays where uniform backlighting is important. The electro-optical panel needs to be driven by high-voltage alternating current, which is provided by the inverter circuit. Cold cathode tubes are used in things like computer monitors, which are usually white in color, which also requires inverters and diffusers. Incandescent backlights are used when high brightness is required, but have the disadvantage that incandescent bulbs have a rather limited lifespan and generate considerable heat.