——Led display panel assembly accuracy: it shows the index value of display packaging technology. The smaller the distance between points, the clearer the screen, the higher the assembly accuracy, and the better the display effect of the screen. The traditional TV wall represented by DLP and LCD can not eliminate the “grid” effect after assembly; Assembly error in LED display conventional products, after adjustment, can be compared to different; But in the small space products, in addition to the improvement of the processing technology, it is often necessary to separate the structural adjustment and electrical correction to deal with the problem of assembly accuracy.
——Maximum brightness unevenness: the index parameter reflecting the display effect of the display screen under the maximum brightness state. The lower the non-uniformity, the better the display effect. The traditional TV wall represented by DLP and LCD, because the attenuation of each display unit is not different, after a long time of use, there will be “color difference”, “light dark” and other phenomena between the display units of TV wall;
——Low brightness and non-uniformity; The index parameter of the display effect of the reverberation display screen under the low brightness state is an important performance index of the indoor small spacing led. The indoor small spacing LED display screen often needs to stop the image playing under the low brightness state. Compared with the maximum brightness non-uniformity, the low brightness non-uniformity can better illustrate the quality of the indoor small spacing LED display screen.
——The black screen is uneven; When the indoor small space LED display screen is black, the LED lamp bead is turned off, and the reflection display is stopped depending on the display screen base, which shows the average reflection of the display screen base data and the manufacturing process of the display screen.
——Pixel failure rate: for indoor small spacing LED displays, the relevant indicators regulated by the current industry standards can no longer reflect the technical requirements of indoor small spacing LED displays. According to the industry level at this stage, we can improve the pixel failure rate limit requirements to better and effectively evaluate the “dead” point, Caterpillar and other phenomena of indoor small spacing LED displays.
——Low brightness, high gray and high brush: conventional LED driving IC is used to solve the flicker problem of small spacing LED display in low brightness. Low brightness, high gray and high brush driving IC is introduced to effectively deal with the flicker problem in low brightness; In the indoor small space LED display products, there is no clear specification for the term stop index limit. Low brightness, high gray and high brush is the unique technical requirement of indoor small space LED display.
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