White balance adjusting method and system for display screen, and display device

Abstract

The invention provides a white balance adjusting method for a display screen. The white balance adjusting method for the display screen comprises the steps of: S1, enabling at least a part of pixels of the display screen to display the colour image of each sub-pixel sequentially and individually in a pre-set gray scale, and measuring colour coordinate values and brightness values when displaying is carried out; S2, on the basis of the measured brightness values of the colour images of all colour sub-pixels, calculating a practical brightness ratio of all the colour sub-pixels in the pre-set gray scale; and, on the basis of the measured colour coordinate values of the colour images of all the colour sub-pixels, calculating a standard brightness ratio of all the colour sub-pixels in the pre-set gray scale when the display screen displays standard white light; and S3, comparing the practical brightness ratio with the standard brightness ratio in the pre-set gray scale, and furthermore, adjusting the gray scale of each colour sub-pixel according to a comparison result, so that the display screen displays standard white light. The invention further provides a white balance adjusting system for the display screen, and a display device. White balance is realized when parameters of the display screen itself do not need to be changed.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a method and system for adjusting white balance of a display screen, and a display device. Background technique [0002] The AMOLED display adopts RGB pixels to emit light independently, realizing colorization technology, not only the color is pure, but also the color gamut is wide. White balance is an important index to describe the accuracy of white color generated by mixing the three primary colors of red (R), green (G) and blue (B) in the display screen. White balance imbalance will lead to serious distortion of the display screen. At present, the white balance adjustment methods of this type of display screen include the following several methods: first, adjust the area ratio of pixels of red, green and blue; second, adjust the thickness of red, green and blue light-emitting materials and light-emitting layers. [0003] The TFT characteristics and OLED characterist...

AI Technical Summary

Problems solved by technology

[0003] The TFT characteristics and OLED characteristics of the display are different in different batches, and the TFT characteristics and OLED characteristics have an impact on the display, and, in the current situation where the research on TFT performance is the core work of the entire R&D, it is required to The parameters of the display itself are not adjusted, so it is obviously not advisable to achieve white balance through the above two methods

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