Led display electronic big screen if you want to have a good visual effect, the chromaticity occupies a seat important position, so how to make more uniform and reasonable, the shade of the led display
led display manufacturer in shenzhen according to experience, summed up the following, for your reference.
Led display chroma uniformity problem is always a difficulty of the personage inside course of study, it is generally believed the brightness of the led display uneven can undertake single point correction, to improve the brightness uniformity.
Uneven and chromaticity cannot be calibrated, only through the led display color coordinates are subdivided and selection to improve.
As people more and more high to the requirement of led display, only to the led display color coordinates are subdivided and filter have been unable to meet the critical eye, comprehensive correction of screen processing, the chroma uniformity is improved.
We found that even the first international brand with a led display is the larger wavelength deviation and deviation, color saturation and the range of the deviation greatly exceeds the threshold value of the human eye to the green color identification, therefore, it is significant to chroma uniformity correction.
On the CIE1931 chromaticity diagram, according to the laws of gravity center, we found that within the scope of the G gear (
Any point green mixing a certain proportion of red and blue, can adjust the color coordinates of the mixed color to the intersection of line cR and straight dB O.
While it is possible to make the chroma uniformity greatly improved.
However, after correction, the color saturation decreases obviously.
Used at the same time, the red and blue to green chroma uniformity correction another premise is the same pixel in red, green, blue three kinds of led display as far as possible using concentrated distribution of red, green and blue color mixture distance as nearly as possible, better effect can be achieved.
Now, the industry is usually used in led display uniform distribution method will bring chaos chroma uniformity correction.
In addition, tens of thousands of red, green and blue led display color coordinates measuring how underway is a very difficult problem.
We give a hint.
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