Correction method of LED display screen

Abstract

The invention relates to a correction method of an LED display screen. The correction method comprises: sizes of modules for correction and a separated module collection mode of an LED display screen are determined; the LED display screen is controlled to be lightened and primary-color image collection is carried out, wherein each lightened correction module contains a plurality of controlled lightened same-color LED lamp points with continuous positions; according to the collected primary-color image, an initial brightness module or an initial brightness chromatic value of each lightened correction module is obtained and a brightness correction target value or a brightness chromatic correction target value is determined correspondingly; and on the basis of the initial brightness module or an initial brightness chromatic value of each lightened correction module as well as the corresponding brightness correction target value or a brightness chromatic correction target value, brightness correction coefficients or brightness chromatic correction coefficients of the multiple same-color LED lamp points in each correction module are obtained and are applied to the LED display screen. According to the invention, the number of LED lamp points for single-time collection is increased by using a separated module collection way and the number of times of image collection is also reduced; the correction time can be shortened; and the correction efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of display correction, in particular to a method for correcting an LED display screen. Background technique [0002] Since the 21st century, the color display industry has developed unprecedentedly, and LED display screens have spread all over the central squares and commercial buildings of various cities. LED display screens are well received by people for their unique advantages of bright colors, high visibility, and low power consumption. The difference in brightness (for example, the brightness of the same production batch of LEDs may vary by nearly 50%, and the chromaticity may vary by 15-20nm), and the brightness and chromaticity of the display screens spliced ​​​​of multiple different production batches of LEDs are even more serious. These brightness and chromaticity differences are intolerable for human vision, so newly produced or year-old LED displays need to be effectively adjusted for brightness...

AI Technical Summary

Problems solved by technology

It can be seen that the point-by-point calibration requires that the brightness and chromaticity data of each LED light point can be accurately collected. If the size of the LED display is large, then multiple collections are required, such as point-by-point collection (that is, only light up each time) One LED point in a sub-area) or partition acquisition (that is, lighting up all LED points of the same color in the same sub-area each time), etc., so it takes more time, resulting in low calibration efficiency

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