With the stimulation of LCD display market, LED backlight industry presents a boom development, making continuous progress in the display technology. After years of development, LED display industry is gradually stepped into mature stage. According to statistics from recent years, there are about 140 LED enterprises with annual production value more than 100 million yuan. From the market perspective, LED backlight technology has huge potentials. In this article, we will compare LED backlight with CCFL backlight. What specific advantages that LED backlight has?
LED backlight technology has better color gamut. Its color presenting capability is much better than that CCFL backlight source, having compensation to the LCD technology with insufficient CRI, providing better color rendition effects.
The general service life of LED Tube is around 100,000 hours. Even if used continuously for 10 hours a day. Theoretically, these LEDs can be used for 27 years, greatly extending the lifetime of LCD TVs. Certainly, this is just a experimental result. The practical lifetime of LED backlight LCD TVs far less than 100,000 hours.
Have wide brightness adjustment range. It is relatively easy for LED technology to realize power control, unlike CCFL, which has a limitation (threshold) for the minimum brightness. Thus, no matter in where, bright outdoor or all black indoor, users can easily adjust the brightness of their display devices to a comfortable level.
Perfect moving images. Traditional CCFL lamps have relatively low light-emitting frequency. Dynamic scenes may produce screen beatings. LED backlight technology can adjust luminous frequencies flexibly, which are much higher than CCFL and presenting motion pictures perfectly.
Real-time color management. Independently send out light by red, green and blue LEDs. It is easily for LED backlight LCD TV sets to control their color characteristics.
The backlit white balance is adjustable, without upsetting the contrast. When the video source is switched between computer and DVD, LED backlight can easily realize adjustment between 9600K and 6500K, without destroying brightness and contrast.
Can provide continuous plane array light four sources for large screens. LED is a kind of planar light source. LED chips with 3-5mm package are the basic light unit. Combination of these LED chips can easily form planar light sources, with even light distribution (brightness). That’s another advantage that for LED technology to be the backlight of LCD TVs. Unlike CCFL, LED backlight LCD TVs need no complex assisted optical components.