How to effectively adjust the brightness of small pixel pitch led display? First of all, let's refer to the brightness range of various indoor display products in the indoor application environment. The brightness range of daily home TV is 350 CD / ㎡ - 500 CD / ㎡; the brightness range of DLP splicing wall is 250 CD / ㎡ - 400 CD / ㎡; the brightness range of LCD splicing wall is 450 CD / ㎡ - 700 CD / ㎡.
Because the human eye is relative to the brightness perception, the brightness perception of the human eye will be different with different light-emitting technology displays. After professional equipment testing, we all think that the brightness range of LED display screen is controlled between 100 CD / ㎡ - 300 CD / ㎡, so in this brightness range, the feeling of human eyes is relatively comfortable.
So can we directly adjust the brightness of the display screen to solve this problem? The answer is not so simple. Because the conventional LED display has the characteristics of low brightness and low gray, that is to say, when the brightness of the display decreases, the gray level of the picture will also be lost.
If we apply the small pixel pitch led display with a nominal brightness greater than 1200 CD / ㎡ directly to our indoor environment, there are only two results: either the high brightness damages the users' eyes, or the brightness is reduced while the gray level and the image quality are lost, which are not the results users want.
To solve this problem, we need our small pixel pitch led display factory to upgrade the current small spacing LED display products and develop a small spacing LED display with "low brightness and high gray". The so-called low brightness and high gray is specifically explained as follows: if the brightness range of the small spacing LED display screen is between 100 CD / ㎡ - 300 CD / ㎡, the gray level of the display screen will not be lost, or the degree of gray level loss is within the visual range that is difficult to be detected by the human eye.
Therefore, low brightness and high gray is a threshold that small pixel pitch led display factory must cross to enter the indoor display applications. Low brightness and high gray will also be one of the key factors to distinguish the high quality of LED display screen with small pixel spacing. With the rapid development of LED display screen in the industry, the small spacing LED display screen has developed towards the direction of intelligent, ultra-thin, light and network. With their mature technology, the small pixel pitch led display with easy assembly and high performance has been widely used in the market.