The basic principles of any electronic display, including the computer's CRT display, plasma display, TV screen and so on are many pixels to express or restore to the need to express the picture or color. In terms of the effect, the higher the fidelity of the performance of the display screen is better, the fidelity of the quality of the image is mainly by the contrast and color of these two indicators to decide (the greater the better contrast, the more the better the color type ). Because the color of nature is ever-changing, there are black, gray, of course, there are other colorful colors.
Firstly, LED display is a red, green, blue light-emitting diode to express the image, for the electronic display in order to show the black then his way is not light (because there is no black light in nature) so all The electronic display surface is designed to be black. Such as televisions, plasma displays, computer displays and other surfaces are black.
Secondly, LED display is a light-emitting diode as a pixel to express the image, the current two kinds of light-emitting diode is a white tube, one is a black tube. But to express the black, gray, his light-emitting diode color (white) also participated in the electronic display to express the color, which produced a color distortion (can not show black, gray, dark green, etc.). Engineers to compensate for the loss of color to compensate for the lack of chip brightness