LED display (LEDdisplay, LED Screen): also known as electronic display screen or floating word. By LED dot matrix and led pc panels, through red, blue, white, green LED light off to display text, images, animations, video, content. Can be made according to the needs of different occasions, different regulatory, such as general billboard those flowing calligraphy, is produced by a flash animation, save in the display of a memory card, and then show up by technical approach, according to Different needs change at any time, the various parts of the components are modular structure of the display device. Traditional LED display usually consists of a display module, control system and power supply system.
The basic principle of any electronic display includes a computer CRT display, plasma screens, TV screens, etc. are expressed by the number of pixels tube or reducing the need to express the image or color. Effect is the higher fidelity performance, the better the display, fidelity is good or bad by the expression of the contrast and color of these two indicators to determine (the bigger the better contrast, better color species ). Because the color of nature is changing, there is black, other colors gray and of course colorful.
1.LED display with red, green and blue light-emitting diode to express the image, for the purposes of electronic display to show black so his approach is not light (as in nature there is no black light), so all electronic display surface is designed to be black. Such as televisions, plasma monitors, computer screens and other display surface is black.
  2.LED light-emitting diode display is expressed as a pixel of the image, the current one is a light emitting diode, there are two white tube, one is the clarinet. But to the expression of black, gray, his LEDs gray (white) is also involved in a color electronic display to express, which produces color distortion (can not show black, gray, dark green, etc.). Engineers with expressive colors to compensate for the loss of wafer insufficient brightness. With the development in recent years, more and more high brightness chip, of course, people on the fidelity of the image are increasingly demanding. We believe that the high-end LED display It uses clarinet is the trend, because the brightness and luminous efficiency of the wafer has been greatly improved, has been without sacrificing brightness contrast to compensate for the lack of a wafer. According to the parameters of the two programs, the clarinet is 1500cd / m, white tube is 2000cd / m. Clarinet power of 350w / m, white tube power is 410w / m. Comprehensive Review: clarinet contrast ratio is 10,000: 1 contrast white tube is 3000: 1. Obviously clarinet contrast than white tube has an obvious advantage.