What is the backlight in the liquid crystal display

In the electronics industry, backlighting is a form of illumination that is often used in LCD displays. The backlight type differs from the front light in that the back light shines from the side or the back, and the front is illuminated from the front as its name suggests. They are used to increase the illumination in the low light source environment and the brightness on the computer monitor and the LCD screen to produce light in a similar way to the CRT display.

The light source may be incandescent bulb, electro-optic panel (ELP), light-emitting diode (LED), cold cathode tube (CCFL) and so on. The electro-optic panel provides uniform light across the surface, while other backlight modules use a diffuser to provide even light from an uneven light source.

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

LED backlight is used in small, inexpensive LCD panels. His light is usually colored, although the white backlight is becoming more and more common. Electro-optic panels are often used in large displays, when even back light is important. The electro-optic panel needs to be driven by a high-voltage alternating current, which is provided by a reverse converter loop. Cold cathode tubes are used in computer monitors, which are usually white in color, and also need to be reversed with a converter and a diffuser. Incandescent backlight is used when high brightness is required, but its disadvantage is that incandescent bulbs have a very limited life span and produce quite a lot of heat.

LED backlight can improve the color performance of LCD display. LED light is produced by three different LEDs, providing a fairly consistent color spectrum of the LCD image-point filter itself.

Backlight Display

Backlit display is the ability to display the content more clearly when the user is using an electronic device and the display on the fuselage can emit backlight. Most electronic devices have a backlit display as long as they have a display.