Liquid crystal display and its brightness adjustment method and device

A technology of liquid crystal display and brightness adjustment, applied in static indicators, instruments, etc., can solve problems such as affecting the display effect of moving images, and achieve the effect of good sports display effect, consistent brightness, and alleviation of smearing phenomenon.

Active Publication Date: 2019-01-11
ALIBABA (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This smearing phenomenon will affect the display effect of moving images

Method used

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  • Liquid crystal display and its brightness adjustment method and device
  • Liquid crystal display and its brightness adjustment method and device
  • Liquid crystal display and its brightness adjustment method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] figure 1 A flowchart showing a method for adjusting brightness of a liquid crystal display according to an embodiment of the present invention. Such as figure 1 As shown, the method may mainly include step S100, step S200 and step S300, each step will be described in detail below.

[0036] Step S100 , determining the pixels in the display panel of the liquid crystal display that need to be switched in gray scale as the pixel area to be processed.

[0037] For example, when the image displayed on the display panel of the liquid crystal display changes, for example, the display panel switches from displaying a black background to displaying a white image, it may be necessary to increase the brightness of some pixels, and the area where these pixels are located is The area of ​​pixels to be processed. Specifically, it is necessary to switch the pixels in the pixel area to be processed from the first grayscale d1 to the second grayscale d2, wherein the first grayscale ...

Embodiment 2

[0044] figure 2 A flowchart showing a method for adjusting brightness of a liquid crystal display according to another embodiment of the present invention. Such as figure 2 as shown, figure 2 The brightness adjustment method shown with the figure 1 The main difference in the brightness adjustment methods shown is that figure 1 The brightness adjustment method mainly includes step S100, step S200 and step S300, and figure 2 The brightness adjustment method mainly includes step S100, step S200, step S310 and step S320. figure 2 Winning mark and figure 1 The same steps, that is, step S100 and step S200 have the same function, for the sake of brevity, the detailed description of these two steps is omitted, and the detailed description of step S310 and step S320 is mainly given.

[0045] Step S310 is executed after step S200, and the display area corresponding to the area to be dimmed in the display panel is determined as the display area to be processed according to ...

Embodiment 3

[0054] Figure 4 A flowchart showing a method for adjusting brightness of a liquid crystal display according to yet another embodiment of the present invention. Such as Figure 4 as shown, Figure 4 The brightness adjustment method shown is figure 1 A possible specific implementation of the brightness adjustment method shown. Figure 4 Winning mark and figure 1 The same steps, that is, step S100 and step S200 have the same function, for the sake of brevity, the detailed description of these two steps is omitted, and the detailed description of step S311 and step S321 is mainly given.

[0055] Such as Figure 4 As shown, in a possible implementation manner, step S300 may include: step S311, using formula 1 to calculate the brightness value of the area to be dimmed at time t,

[0056] Formula 1,

[0057] Among them, A(t) is the brightness value of the area to be dimmed at time t, A max is the maximum brightness value of the area to be dimmed, a is a preset fixed valu...

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Abstract

A liquid crystal display, and a luminance adjusting method and apparatus therefor. The luminance adjusting method for the liquid crystal display comprises: determining a pixel needing to undergo grayscale switching in a display panel of a liquid crystal display to be a to-be-processed pixel area; determining, according to a corresponding relationship between pixels in the display panel and backlight areas in a backlight source, a backlight area, corresponding to the to-be-processed pixel area, in the backlight source to be a to-be-dimmed area; and during a liquid crystal deflection period in which the pixel of the to-be-processed pixel area undergoes grayscale switching, adjusting the luminance of the to-be-dimmed area according to a grayscale value of the pixel of the to-be-processed pixel area. The liquid crystal display and the luminance adjusting method and apparatus therefor can dynamically compensate a relevant backlight area in a backlight source, thereby alleviating the phenomenon of trailing in liquid crystal display, such that the luminance presented on a display panel finally tends to be consistent, thereby achieving a better moving display effect.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a liquid crystal display and its brightness adjustment method and device. Background technique [0002] The display principle of the vertical alignment type (English: Vertical Alignment, abbreviation: VA) liquid crystal display is: since the deflection angle of the liquid crystal molecules corresponds to the luminous flux of the liquid crystal molecules, the liquid crystal molecules can be deflected to different angles to control the passage of light accordingly. The luminous flux of liquid crystal molecules realizes the display effect of bright and dark changes of the liquid crystal display. [0003] However, due to the inherent physical characteristics of the liquid crystal molecules, it takes a certain amount of time to deflect, so that the gray scale switching also requires a certain amount of time. For example, a white square on a black background will smear when movi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34G09G3/36
CPCG09G3/34G09G3/36
Inventor 宁超曹谦苏文华姚键潘柏宇王冀
Owner ALIBABA (CHINA) CO LTD
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