1. Chromaticity correction refers to the light detector correction method with strong color recognition ability, which can more accurately measure the brightness and chromaticity value of the LED display.

2. Brightness correction is the correction of LED luminous intensity. Some calibration equipment lacks good color recognition ability and cannot correctly measure the spectral difference, only the luminous intensity can be measured, and the chromaticity deviation cannot be correctly measured.

When using different batches of LED screens with the same dominant wavelength, brightness and chromaticity corrections are required. This not only ensures that the overall brightness of the LED electronic display is consistent, but also the color display effect of the normal display. The tail end products generally have price advantages. By correcting this technology bit by bit, the tail ends of these different batches can perform normal functions, improve the use value of the LED display, and save customers' costs.