Liquid crystal display device and brightness adjusting method and apparatus thereof

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 reducing smearing phenomenon.

Active Publication Date: 2016-02-17
ALIBABA (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This smearing phenomenon will affect

Method used

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  • Liquid crystal display device and brightness adjusting method and apparatus thereof
  • Liquid crystal display device and brightness adjusting method and apparatus thereof
  • Liquid crystal display device and brightness adjusting method and apparatus thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0034] Example 1

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

[0036] Step S100: Determine the pixels in the display panel of the liquid crystal display that need to perform gray-scale switching as the pixel area to be processed.

[0037] For example, when the image displayed on the display panel of a liquid crystal display changes, for example, the display panel switches from displaying a black background to displaying a white image. It may happen that the brightness of some pixels needs to be increased. Then the area where these pixels are located is The pixel area to be processed. Specifically, it is necessary to switch the pixels in the pixel area to be processed from the first gray level d1 to the second gray level d2, whe...

Example Embodiment

[0043] Example 2

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

[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 t...

Example Embodiment

[0053] Example 3

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

[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] A ( t ) = A m a x , t = 0 a B ( t ) , 0 t ≤ T Formula 1,

[0057] Among them, A(t) is the brightness value of the area to be dimmed at ti...

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Abstract

The invention relates to a liquid crystal display device and a brightness adjusting method and apparatus thereof. The brightness adjusting method comprises: a pixel needing to carry out gray scale switching in a display panel of a liquid crystal display device is determined as a to-be-processed pixel zone; according to a correspondence relation between the pixel in the display panel and a backlight region in a backlight source, a backlight region corresponding to the to-be-processed pixel zone in the backlight source is determined as a to-be-light-modulated region; and the brightness of the to-be-light-modulated region is adjusted according to a gray scale value of the pixel in the to-be-processed pixel zone within the liquid crystal deflection period of gray scale switching of the pixel of the to-be-processed pixel zone. According to the liquid crystal display device and the brightness adjusting method and apparatus thereof, dynamic compensation of a correlated backlight region in the backlight source can be realized, thereby reducing occurrence of a trailing phenomenon in liquid crystal display. Therefore, the brightness displayed finally on the display panel tends to be uniform, thereby realizing a good 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 correspondingly control the flow through the liquid crystal. Molecular luminous flux, so as to realize 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 whe...

Claims

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Application Information

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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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