Led brightness discrimination level
Brightness discrimination level refers to the brightness level of an image that the human eye can distinguish from the darkest to the whitest.
Some of that gray level of the previously mentioned display screen are very high, reaching 256 or even 1024 levels. However, due to the limited sensitivity of the human eye to brightness, these gray levels are not fully recognized.
That is to say, it is possible that many adjacent levels of gray look the same to the human eye. And that eye resolution vary from person to person. For the display screen, people see other levels of nature is the more the better, because the image displayed is, after all, for people to see.
The more brightness levels the human eye can distinguish, meaning that the larger the color space of the display screen, the greater the potential for rich colors to be displayed. Brightness identification level can be tested with special software, general display screen can reach more than 20 level even better level.

