LED electronic display technology from the early 80 s of the 20th century monochrome screen, double colors display by the end of the 80 s, to the mid - 90 - s of the three primary colors (full color) display, until today we are widely discussed in the field of flat display more gezer (more than three colors) processing technology. LED display chroma processing technology from the most basic color wavelength selection, to the deployment of color temperature, the white field and to improve the color reduction degree of color space transform processing and to improve the quality of chroma uniformity processing, until today, we in order to expand color gamut reappear more nature and take more colors (more than three colors) processing. All sorts of color processing throughout the history of the LED display, become the LED electronic display of this comprehensive discipline at the core of technology.

      LED electronic display screen has a very wide application in all walks of life, and gezer wavelength of LED in the 

application of different places have different requirements, LED gezer wavelength selection for some of them are in order to obtain a good visual effect, some of them are in order to comply with the habits of people, and some is the industry standard, national standard, and even the rules of the international standard.

     In full color LED display, for example, green tube gezer wavelength choice; Early generally choose the wavelength of 570 nm yellow-green LED, although the cost is low, but the display color gamut smaller, poor color reduction degree, low brightness. In choosing a wavelength of 525 nm, pure green tube display color gamut expanded nearly doubled, and the color reduction degree is greatly increased, greatly improve the visual effect of the display screen. Again, for example, stock screen, people usually accustomed to using the red rose, with green, says falling share prices, and with $said flat. In the transportation sector, it is stipulated by national standard strictly the blue green band pass, red light to stop. Therefore, gezer wavelength selection is one of the important link of LED display.

     White field color coordinate mixing is one of the most basic technology of full color LED display screen. But in the

 mid - 90 - s of the 20th century, due to lack of industry standards and the basic means of testing, usually just by eye, by feeling sure white color coordinates, thus causing serious partial color and white color temperature of randomness. With the promulgation of the industry standard and testing means complete, many manufacturers began to standardize the full color matching process. But there are some manufacturers because of the lack of color theory instruction, often at the expense of some primary grey scale to allocate the color coordinates, comprehensive performance cannot be improved.

      This article key words: BVSION HONGKONG CO.,LIMITED, BVSION, BVS, LCD screen, LCD, LCD driver, INNOLUX 

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