LED display requires point-by-point chroma correction

Why does LED display require point-by-point chroma correction? Judging whether a LED display's color display quality is good enough is not to see how the image displayed by it is eroded and how rich the color is. The more important factor is to see if the color it restores is true and accurate. Point-by-point colorimetric correction technology can help LED display to achieve a natural and natural display effect.

Why does LED display require point-by-point chroma correction

The eye-to-pixel wavelength resolution is in the range of 3 to 4 nm. After normal color separation, the wavelength range is within ±2.5 nm. The uniformity of the color after mixing the lamp is difficult for the human eye to distinguish. Therefore, the application of color uniformity correction is mainly applied to the same screen after different wavelengths of lamp mix lamp. Currently, LED display screens that need to do color space correction mainly include the following three situations:

1, lease screen. For example, in April 2013, a batch of 100 boxes were screened. In January 2014, another 50 boxes were used. How can these two batches of boxes be mixed? At this time you need to do chroma correction.

2, deal with Weihuo. For example, in October 2013, there were 30 modules remaining in a certain project. In April 2014, there were 60 modules remaining in a certain project. Can these cargoes be shipped in large screens? Do not worry, through the color correction can also be resolved.

3, specify the color space. High-end customers often specify color space standards for LED displays in order to unify advertising images. Most of the display screens did not meet this requirement when they were first produced. Bright color calibration is required after the aging is completed. After a period of use, it is necessary to adjust again when the light is bad.

LED display color correction usually includes the following two aspects:

First, the gamut space correction: to improve the screen color gamut consistency and color fidelity (color reproduction)

Second, the color uniformity correction: improve pixel color consistency (display uniformity)

The former is the concept of the entire screen, while the latter is the concept of pixel level.