How to effectively adjust the brightness of small spacing LED display?
How to effectively adjust the brightness of small spacing LED display? How to effectively adjust the brightness of small spacing LED display screen? First, let's refer to the brightness range of various indoor display products in the indoor application environment. The brightness range of daily household TV is 350 CD / ㎡ - 500 CD / ㎡; The brightness range of DLP splicing wall is 250 CD / ㎡ - 400 CD / ㎡; The brightness range of the LCD splicing wall is 450 CD / ㎡ - 700 CD / ㎡.
Since the human eye has a relative perception of brightness, the brightness perception of the human eye will be different with the display using different lighting technologies. After professional equipment testing, we all believe that the brightness range of LED display screen is controlled within 100 CD / ㎡ - 300 CD / ㎡, so the human eyes feel comfortable in this brightness range.
So can we solve this problem by directly adjusting the brightness of the display screen? The answer is not so simple. Because the conventional LED display screen has the characteristics of low brightness and low gray, that is to say, the brightness of the display screen is reduced and the gray level of the screen is also lost.
If the small spacing LED display screen with nominal brightness greater than 1200 CD / ㎡ is directly applied to our indoor environment, there are only two results: either the high brightness will damage the eyes of users, or the brightness will be reduced and the gray level and image quality will be lost, and neither of these is the result that users want.
To solve this problem, we need to require our display manufacturers to upgrade the current small spacing display products and develop a small spacing LED display with "low brightness and high gray". The specific explanation of the so-called "low brightness and high gray" is that if the brightness range of the small spacing LED display screen is within the range of 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 for human eyes to detect
Therefore, low brightness and high gray is a threshold that led display manufacturers must cross when entering the indoor display application. Low brightness and high gray will also be one of the key factors to distinguish the high and low quality of small spacing LED displays. With the rapid development of LED display screen in the industry, small spacing LED display screen has been developing towards the direction of intelligent, ultra-thin, lightweight and networked. With the maturity of their technology, small spacing LED display screen with easy assembly and high performance has been widely used in the market.