Method and device of gray scale correction of display panel

Abstract

The present invention discloses a method and device of gray scale correction of a display panel. The method comprises: assigning a plurality of test gray scales and a reference gray scale, detecting the actual brightness of each pixel when the display panel inputs each test gray scale and the reference gray scale, and calculating the test gray scale average brightness and the reference gray scale average brightness of the display panel; determining a first gamma value corresponding to each test gray scale according to the test gray scale average brightness and the reference gray scale average brightness; dividing the total gray scale into n gray scale areas, and determining a second gamma value corresponding to an ith gray scale area according to the first gamma value corresponding to each test gray scale located at the ith gray scale area; and determining the correction relative brightness of the pixel in any gray scale according to the actual brightness of any one pixel in the maximum gray scale and the second gamma value corresponding to each gray scale area. The method of gray scale correction of the display panel realizes correction of each pixel located at different gray scale areas through adoption of different second gamma values so as to improve the display quality of the display panel.

Description

technical field [0001] The present application relates to the field of display technology, and in particular to a grayscale correction method and a grayscale correction device for a display panel. Background technique [0002] Display technology is a crucial technology in electronic technology, which is related to the display effect of electronic products. And with the rapid development of display technology, people have higher and higher requirements for display effects. [0003] Display panels may generally include liquid crystal display panels and organic light emitting display panels. Current liquid crystal display panels and organic light-emitting display panels usually have the problem of uneven display. In order to solve the problem of uneven display on the display panel, the driver chip can correct the gray scale of each pixel on the display panel. However, the existing grayscale correction method usually uses a relatively fixed gamma coefficient and a single gamma...

AI Technical Summary

Problems solved by technology

The current liquid crystal display panel and organic light-emitting display panel usually have the problem of uneven display. In order to solve the problem of uneven display of the display panel, the driver chip can correct the gray scale of each pixel on the display panel.

However, the existing grayscale correction method usually uses a relatively fixed gamma coefficient and a single gamma curve to correct pixels in different grayscales in the entire display panel, which makes the corrected display panel more accurate when displaying images. Poor, low quality display on the display panel

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