What is the LED backlight?

    The LED is the backlight of the LCD TV. The main purpose is to improve the picture quality. Especially in the color saturation, the LED backlight technology display can obtain a wide enough color gamut to make up for the lack of display color of the liquid crystal display device. It can meet or exceed the requirements of Adobe RGB and NTSC color standards, and can reach NTSC ratio of more than 100%. Among them, Sony introduces LCD TV panel with LED backlight, especially emphasizing the performance of bright red and dark green, which can display more realistic than the past. s color. At the same time, because of the planar light source characteristics of the LED, the LED backlight can also realize the color and chromaticity adjustment function of the sub-region that the CCFL cannot match, thereby realizing more accurate color reproduction to meet the needs of the graphic publishing and graphic design work. The dynamic adjustment allows the brightness and contrast to be dynamically corrected when displaying different images for better picture quality.

LED backlight for LCD TV

　　1. The LCD screen itself does not emit light, and a backlight is required. The LED backlight LCD TV adopts LED light-emitting diode as a backlight, which has five advantages over the cold cathode fluorescent tube backlight: 　　

　　First, the ultra-wide color gamut can reach 105% NTSE color gamut, so the color is more vivid. 　　

　　Second, the ultra-thin appearance, the thinnest reaches 1.99 cm, more fashionable. 　　

　　Third, energy saving and environmental protection, energy consumption is 52% lower than that of cold cathode backlight, and there is no mercury pollution of cold cathode tubes. 　　

　　Fourth, long life, reaching nearly 100,000 hours, can be used for 27 years if you open 10 hours a day. 　　

　　Five, can achieve 100000:1 ultra-high contrast, higher definition.　　

　　2, the above performance advantages determine the LED backlight is technically a substitute for cold cathode backlight, the current market price is basically 150% of cold cathode backlight products. The LED backlight itself has no choice. The main choice for the whole machine is the choice of the technical performance parameters of the liquid crystal panel, such as the maximum physical resolution, dynamic response time, etc., which is the same as the ordinary LCD TV. 　　

　　3, the main method of the difference in appearance is that the screen of the LED is ultra-thin, "illuminance and temperature" can not be seen. 　　

　　4, LED is a semiconductor power-on light, no electromagnetic radiation, harmless to the human body. 　　

　　5, the most vulnerable is not good to say, anyway, the theoretical life of LED backlights is longer than the current technology LCD panel.