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Method and display device for adjusting backlight brightness of display device

A technology of backlight brightness and display device, applied in static indicators, instruments, etc., can solve the problems of inability to calculate the backlight source, waste of backlight brightness, and inability to generate

Inactive Publication Date: 2017-08-25
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although this adjustment method can achieve the goal of reducing power consumption by appropriately changing the brightness of the backlight, because it only roughly gives an approximate adjustment value based on the statistical value of the gray information of the picture, it cannot produce an accurate contrast value as the brightness of the backlight. The reference value for adjustment cannot clearly calculate the specific data of the pulse width modulation signal duty cycle that needs to be adjusted according to the specific content of the picture, and the purpose of precise adjustment cannot be achieved, and there will still be a certain degree of waste of backlight brightness

Method used

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  • Method and display device for adjusting backlight brightness of display device
  • Method and display device for adjusting backlight brightness of display device

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Experimental program
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Embodiment 1

[0051] Such as figure 1 As shown, this embodiment provides a method for adjusting the brightness of the backlight of a display device, including:

[0052] Convert the original RGB signal of each pixel to the corresponding RGBW signal;

[0053] Determine the color and original brightness value of each pixel according to the gray value ratio of the original RGB signal of each pixel;

[0054] Determine the backlight brightness value of each pixel after the conversion of the original RGB signal according to the color of each pixel;

[0055] The weighted average calculation is performed on the backlight brightness adjustment value of each pixel before and after the signal conversion to obtain the overall backlight brightness adjustment value of all pixels.

[0056] The method for adjusting the brightness of the backlight of the display device in this embodiment provides a specific adjustment value for the brightness of each pixel, so that the adjustment of the brightness of the bac...

Embodiment 2

[0096] Such as figure 2 As shown, this embodiment provides a display device, including:

[0097] A signal decomposition unit is used to convert the original RGB signal of each pixel into a corresponding RGBW signal;

[0098] Wherein, the conversion method of the video signal of each frame of image may adopt various calculation methods in the prior art.

[0099] One way of the RGBW signal converted by the signal decomposition unit is transmitted to the image processing unit, and after being processed by the image processing unit, it is transmitted to the display screen of the display unit for image display. The above-mentioned processing methods of the image processing unit belong to the prior art category, and will not be repeated here.

[0100] The RGBW signal converted by the signal decomposition unit is transmitted to the backlight drive unit through another route.

[0101] a backlight drive unit, configured to determine the color and original brightness value of each p...

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Abstract

The invention provides a method for adjusting the brightness of a backlight of a display device and a display device, which are used to solve the problems in the prior art that the dynamic adjustment of the brightness of the backlight is relatively rough, the brightness of the backlight is wasted, and the like. The invention provides a method for adjusting the brightness of the backlight of a display device and a display device, and provides a specific adjustment value for the brightness of each pixel, so that the adjustment of the brightness of the backlight is accurate, and overcomes the roughness of the adjustment of the brightness of the backlight in the prior art , further saving the backlight brightness.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a method for adjusting the brightness of a backlight of a display device and a display device. Background technique [0002] With the development of mobile communication technology, mobile phones have become very popular. Moreover, with the rapid development of mobile phone terminal technology and applications, the functions of mobile phones have become more and more abundant, and the power consumption of mobile phones has also increased. The time is also reduced accordingly. As an important part of mobile phone power consumption, backlight power consumption has received more and more attention, and dynamic backlight adjustment technology is currently the most used technology to reduce backlight power consumption. [0003] The general dynamic backlight adjustment technology is based on the content of the picture, after simple statistics of the brightness or grayscale in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34G09G3/36
CPCG09G3/3406G09G2320/0242G09G2320/0626G09G2330/021G09G2340/06G09G2360/16
Inventor 卢鹏程陈忠君董学郭仁炜刘鹏李牧冰苗京花
Owner BOE TECH GRP CO LTD
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