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Method, device and display screen for adjusting backlight

A backlight adjustment and display technology, applied to static indicators, instruments, etc., can solve problems such as frequent changes in TV backlight brightness and visual discomfort for end users, and achieve the effects of avoiding frequent changes, slow response, and discomfort

Active Publication Date: 2015-09-16
BOE TECH GRP CO LTD +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] However, the traditional LCD TV backlight dynamic adjustment method, such as figure 1 As shown, the average brightness of the input image frame is generally obtained, and converted into a new TV backlight brightness value according to the mapping curve between the average brightness of the image frame and the brightness of the LCD TV backlight, and then the LCD backlight is directly adjusted. The disadvantage of this method is that When the average brightness value of the input image frame fluctuates frequently in a small range, it will cause frequent changes in the brightness of the TV backlight, which will make end users feel uncomfortable visually

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  • Method, device and display screen for adjusting backlight
  • Method, device and display screen for adjusting backlight

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Embodiment Construction

[0043] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0044] An embodiment of the present invention provides a backlight adjustment method for adjusting the brightness of the backlight of the display screen, such as figure 2 shown, including:

[0045] Step 21, obtaining the average brightness value of the currently input image frame;

[0046] Step 22, converting the average luminance value into a target luminance value of the backlight source;

[0047] Step 23, judging whether the difference between the target luminance value and the current luminance value of the backlight is outside a preset interval, and obtaining a first judgment result;

[0048] Step 24, when the first judgment result indicates that the difference between the target brightness value and the current brightness valu...

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Abstract

The present invention provides a backlight adjustment method, a backlight adjustment apparatus, and a display screen. The backlight adjustment method for adjusting a backlight brightness value of a display screen comprises: acquiring an average brightness value of a currently-inputted image frame; converting the average brightness value into a target brightness value for a backlight; judging whether or not a difference between the target brightness value and a current brightness value of the backlight is beyond a preset range, to obtain a first judgment result; and adjusting the brightness value of the backlight according to the target brightness value when the first judgment result indicates that the difference between the target brightness value and the current brightness value of the backlight is beyond the preset range.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a backlight adjustment method, device and display screen. Background technique [0002] Traditional LCD TV backlight adjustment generally adopts two methods: Method 1, the LCD TV backlight brightness value is set to a fixed value, generally set to the maximum brightness value, that is, the LCD TV backlight brightness cannot be adjusted. Another method is to adopt a dynamic adjustment method, that is, the brightness of the backlight of the LCD TV changes with the average brightness of the input image frame. The advantage of method 2 is that setting an appropriate mapping curve between the average brightness of the image frame and the brightness of the LCD TV backlight can improve the dynamic contrast of the LCD TV and reduce the power consumption of the TV when it is working normally; since the principle of dynamic backlight adjustment is "the image is brighter when it is It...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34G09G3/36
CPCG09G2320/064G09G2320/0653G09G2360/16G09G3/3406G09G3/36
Inventor 陈敏吕本登
Owner BOE TECH GRP CO LTD
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