The invention discloses a white field
chromaticity compensation coefficient prediction and optimization method and a display control method of an LED screen, relates to the technical field of
LED display, and aims to solve the problems that display differences exist between real pixels and virtual pixels, optical drifting is generated under long-term operation, the cost is high and color cast repair is inaccurate in the existing white field color cast correction technology. Measuring and analyzing
chromaticity distribution of each region in a white field display state, selecting a compensation
function type according to region characteristics, judging internal parameters of a corresponding compensation function according to a color cast type, and further establishing a local
chromaticity compensation model; compensation
coefficient optimization is carried out based on a
feedback control closed-
loop optimization method, so that a chromaticity compensation model continuously fits an actual optical state, and self-learning type display
consistency control is realized; the display control of the LED screen is that chromaticity compensation is carried out in a
signal domain, and an additional hardware current adjusting module is not needed. The method provided by the invention is suitable for white field color cast correction in Micro / Mini and other
LED display systems.