2013年6月24日星期一

LED electronic TFT Display Module of true color image reproduction


Full color LED electronic display visual theory and color TV, lcd module  , is through the red, green, and blue colors of different light intensity reduction of image color reproduction. Red, green and blue image directly affects the degree of purity of the color reproduction of visual effects. However, the ratio of three color white is not a simple superposition of the three colors. First, to ensure the pure optical frequency premise require red, green and blue intensity ratio must be approximately 3:6:1; Second, since the visual sensitivity to red, the red light source required to be dispersed in the space distribution; Third, because the visual red, green, and blue light response of different non-linear curve, require different white light to red, green and blue to be similar to the television sets of the γ correction; s Fourth, the human visual ability to distinguish the color difference is limited. Therefore, you must identify the authenticity of the image color reproduction of objective indicators. In order to reproduce the true color images, the 144x32 lcd light on the electronic display should meet some of the following requirements:
① red, green and blue color should be that of the wavelength: 660nm, 525nm, 470nm or so;
② The four units with white light better (multi-tube unit can be, depending on the light intensity);
③ red, green, and blue gray level is 256;
④ LED pixel pipe must be used for non-linear correction.
Red, green, and blue light and non-linear correction can be implemented in hardware using the display control system, playback system can also be implemented in software.

没有评论:

发表评论