Method and system for adjusting white balance of display screen, and display device

An adjustment method and technology for an adjustment system, applied to static indicators, color signal processing circuits, instruments, etc., can solve problems such as display influence

Active Publication Date: 2019-10-15
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Method and system for adjusting white balance of display screen, and display device
  • Method and system for adjusting white balance of display screen, and display device
  • Method and system for adjusting white balance of display screen, and display device

Examples

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Embodiment 1

[0039] figure 1 For the general flowchart of the white balance adjustment method of the display screen provided by the present invention, please refer to figure 1 , the white balance adjustment of the display screen provided by the embodiment of the present invention includes:

[0040] S1, make all the pixels of the display screen separately display the color image of each color sub-pixel in sequence under the preset gray scale and measure the color coordinate value and brightness value during display.

[0041] Wherein, if the display screen includes sub-pixels of the three primary colors of RGB, and the preset gray scale is 3, then step S1 specifically includes: making all the pixels of the display screen separately display a red image, a green image or a blue image sequentially under 3 gray scales , and respectively measure the color coordinate value and brightness value displayed on the display screen at this time. More specifically, the gray scales of all red sub-pixels ...

Embodiment 2

[0068] image 3 For the functional block diagram of the white balance adjustment system of the display screen provided by the embodiment of the present invention, please refer to image 3 , the white balance adjustment system of the display screen provided by the embodiment of the present invention includes: a measurement module 10 , a calculation module 11 , and a comparison and adjustment module 12 . Among them, the measurement module 10 is used to make all the pixels of the display screen separately display the color image of each color sub-pixel in turn under the preset gray scale and measure the color coordinate value and brightness value during display; the calculation module 11 is used to The brightness value of the color image of each color sub-pixel calculates the actual brightness ratio of all color sub-pixels under the preset gray scale; The standard brightness ratio of all color sub-pixels when the display screen displays standard white light in grayscale. The co...

Embodiment 3

[0078] Embodiment 3 of the present invention also provides a display device, including a display screen and a white balance adjustment system. The white balance adjustment system adopts the white balance adjustment system of the display screen provided in Embodiment 1 above.

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Abstract

The present invention provides a method for adjusting the white balance of a display screen, including: S1, making at least some pixels of the display screen separately display the color images of sub-pixels of each color in sequence at a preset gray scale, and measuring the color coordinate values ​​and Brightness value; S2, calculate the actual brightness ratio of all color sub-pixels under the preset gray scale based on the measured brightness values ​​of the color images of all color sub-pixels; based on the measured color coordinate values ​​of the color images of all color sub-pixels , calculate the standard brightness ratio of all color sub-pixels when the display screen displays standard white light under the preset gray scale; S3, compare the actual brightness ratio under the preset gray scale with the standard brightness ratio, and based on the comparison result Adjust the gray scale of each color sub-pixel to make the display display standard white light. The invention also provides a white balance adjustment system and a display device of the display screen, which can achieve white balance without changing the parameters of the display screen itself.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/73G09G3/3208
CPCG09G3/3208H04N9/73G09G2320/0666H10K59/12G09G3/2003H10K59/35G09G3/3225G09G2320/0242G09G2320/0233G09G2300/0452
Inventor 李金祥王洋张俊伟李官正
Owner BOE TECH GRP CO LTD
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