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Display device pixel brightness compensation control method and device

A display device, pixel brightness technology, applied in static indicators, instruments, electrical components, etc., can solve the problems of uneven backlight brightness, uneven bright and dark areas, uneven backlight brightness, etc., to achieve the effect of compensating for uneven electrical performance

Active Publication Date: 2014-07-23
BOE TECH GRP CO LTD +1
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  • Description
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AI Technical Summary

Problems solved by technology

In actual production, it is impossible to ensure that the brightness of each area of ​​the entire liquid crystal display panel is consistent, resulting in uneven brightness of the backlight. Under the pure color screen of the LCD, there will be uneven brightness and dark areas, which seriously affects the image quality of the LCD.
[0005] The existing technology can solve the problem of uneven brightness of the backlight by improving the processing accuracy and quality of the backlight, but this method cannot achieve the desired effect, and will lead to a sharp increase in the cost of the LCD module

Method used

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  • Display device pixel brightness compensation control method and device
  • Display device pixel brightness compensation control method and device

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Embodiment Construction

[0038] Embodiments of the present invention provide a method and device for controlling pixel brightness compensation of a display device, which are used for compensating the brightness of a backlight of a display panel through white sub-pixels and improving image display quality.

[0039] The concept of gray scale in the following embodiments of the present invention will be briefly introduced below.

[0040] Usually we see that a point on the image displayed by the display device is composed of three sub-pixels of red, green and blue. The light source behind each sub-pixel can display different brightness levels. The gray scale represents the brightness from the brightest to the brightest. Different levels of darkness, the more layers, the finer the picture effect will appear. For example, 256 brightness levels are called 256 gray scales, and the color change of each point on the image represents the change of the gray scale of the three sub-pixels that constitute this point...

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Abstract

The invention discloses a display device pixel brightness compensation control method and device. The method and device are used for the compensation for backlight brightness of a liquid crystal display panel through white sub pixels and improving display quality of images. The display device pixel brightness compensation control method includes the steps that the white sub pixels in a pixel unit are driven to compensate the pixel unit where the white sub pixels are located for brightness according to the pixel unit with brightness to be compensated for in a pre-determined display device and compensation gray scale voltage corresponding to compensation brightness of the pixel unit.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method and device for controlling brightness compensation of pixels of a display device. Background technique [0002] In the field of display technology, image display quality is one of the indicators for judging the performance of display devices, and high-quality image display is the goal pursued by various manufacturers. At present, there is still a problem of display non-uniformity in terms of brightness in realizing a large-size display device. The non-uniformity of brightness display is mainly caused by two aspects: the non-uniform electrical properties of the thin film transistor (Thin Film Transistor, TFT) in the backplane and the non-uniform backlight provided by the backlight module provided on the back of the liquid crystal display panel. [0003] The uneven backlight of the backlight is mainly due to the structural design of the backlight module. At present, a ty...

Claims

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Application Information

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IPC IPC(8): G09G3/36G09G3/34
CPCG09G3/3607G09G2320/0233G09G2320/0693H04N9/3182
Inventor 陈会娟金亨奎张夺陈阳
Owner BOE TECH GRP CO LTD
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