How to do point-by-point calibration for LED roll-up screens?

  I believe we all know that point-by-point calibration is a technology used to improve the brightness and color uniformity and color fidelity of LED roller shutter screen, and from the analysis of the market demand nowadays, the necessity of on-site calibration is becoming more and more prominent. That is, through the LED roller shutter screen on each pixel (or each base color sub-pixel) area of the brightness (and chromaticity) data collection, to give each base color sub-pixel correction coefficients or correction coefficients of each pixel matrix, uniformity proofreading is summarized as follows: factory proofreading, repair proofreading, service area proofreading and on-site proofreading, so that the LED roller shutter screen screen picture is pure and delicate and the color is truly restored. Then you knowLED roll-up screenHow to do point-by-point correction? The following VisiTech editorial is for you:

  Now the mainstream LED roll-up screen point-by-point correction technology, mainly using LED box point-by-point correction.

  Box calibration is arranged in the factory before the last link, mainly used to eliminate the brightness and chromaticity differences between the box and the box, to improve the uniformity of the spliced LED roll-up screen. In addition to increasing the calibration link in the production process, manufacturers generally also need to follow up the calibration effect of the screen factory.

  There are three commonly used practices:

  One is to splice all the LED roll-up screen boxes to observe the display effect, but the workload of splicing is relatively large and it is not convenient to realize.

  Secondly, randomly take part of the LED roll-up screen box for splicing and observe the calibration effect.

  Thirdly, the measurement data recorded by the calibration system is used to simulate and evaluate the calibration effect of all the boxes, and the LED production line with LED roll-up screen box calibration and simulation evaluation/sampling link is added.

  Overall, the current LED roller shutter screen manufacturers, generally used in the box point by point calibration, which is the LED roller shutter screen factory must pass a test program. Through the LED box point by point calibration, can greatly improve the consistency of the LED roller shutter screen picture, and is unified in the production workshop calibration, so the cost is relatively low, the calibration effect is also better.