Grayscale compensation method and system of OLED display panel

Abstract

An embodiment of the invention discloses a grayscale compensation method and system of an OLED display panel. The method includes: acquiring the actual display brightness of each subpixel of the OLED display panel under an actual input grayscale, and calculating the corresponding relationship between the actual input grayscale of each subpixel and the actual display brightness of each subpixel; determining the target display brightness of each subpixel under a preset input grayscale according to the target brightness of each subpixel under the 255th grayscale and the target gamma value of the OLED display panel; determining the target input grayscale of each subpixel when each subpixel displays the target display brightness according to the corresponding relationship between the actual input grayscale of each subpixel and the actual display brightness of each subpixel; determining a grayscale compensation value according to the target input grayscale of each subpixel and the preset input grayscale. By the grayscale compensation method, light-emitting unevenness among the subpixels of the OLED display panel is improved.

Description

technical field [0001] Embodiments of the present invention relate to display technology, and in particular to a gray scale compensation method and a gray scale compensation system for an OLED display panel. Background technique [0002] With the development of display technology, the display effect of display products has been continuously improved, so that the application of display products has become more and more extensive. [0003] However, in existing display panels, due to reasons such as manufacturing process and aging of luminescent materials, it is easy to cause uneven light emission between sub-pixels, that is, when sub-pixels of the same color are input with the same image signal, the display brightness is different, which affects the image display quality. [0004] In the prior art, the method of compensating the driving circuit of the thin-film transistor is usually used to improve the unevenness of light emission. However, this method often requires the desig...

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Problems solved by technology

[0003] However, in the existing display panels, due to the manufacturing process and the aging of the luminescent materials, it is easy to cause uneven light emission between the sub-pixels, that is, when the sub-pixels of the same color are input with the same image signal, the display brightness is different, which affects the image display quality.

[0004] In the prior art, the method of compensating the driving circuit of the thin-film transistor is usually used to improve the unevenness of light emission. However, this method often requires the design of a more complex pixel circuit, which not only increases the difficulty of the process, but also limits the area of ​​the light-emitting area, making it impossible to achieve more Highest number of pixels per inch (Pixels Per Inch, PPI)

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