A method for reducing image sticking and liquid crystal display

A liquid crystal display, image retention technology, applied to static indicators, instruments, etc., can solve problems such as image retention, achieve the effect of reducing image retention and improving display quality

Active Publication Date: 2017-09-15
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In summary, the existing methods do not really solve the problem of image retention, so it is urgent to provide a solution to solve the above problems, which can effectively reduce the phenomenon of image retention and improve the display quality of liquid crystal displays

Method used

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  • A method for reducing image sticking and liquid crystal display
  • A method for reducing image sticking and liquid crystal display
  • A method for reducing image sticking and liquid crystal display

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Embodiment Construction

[0026] Certain words are used to refer to specific components in the description and claims, and those skilled in the art should understand that manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a basis for distinction. The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] image 3 is a flowchart of a method for reducing image sticking according to an embodiment of the present invention. It should be noted that if there are substantially the same results, the method of the present invention does not image 3 The flow sequence shown is limited. Such as image 3 As shown, the method includes the following steps:

[0028] Step S10: Obtain the grayscale voltage value of each pixel in the current data frame.

[0029] In step S10, the g...

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Abstract

The invention discloses a method for reducing image sticking and a liquid crystal display. The method includes: acquiring the grayscale voltage value of each pixel in the current data frame; judging whether the grayscale voltage value corresponding to the same pixel in the current data frame and the previous data frame changes; The difference between the grayscale voltage value corresponding to the same pixel in the data frame and the current data frame; determine whether the difference is greater than zero; if the difference is greater than zero, further determine whether the number of frames that remain unchanged in the data frame is greater than the first predetermined value and less than the second predetermined value; if the number of frames is greater than the first predetermined value and less than the second predetermined value, the grayscale voltage value of each pixel in the current data frame is reduced and output to the pixel driving unit. Through the above method, the present invention can reduce the image sticking caused by the feed-through voltage generated by the parasitic capacitance in the pixel driving unit, and improve the display quality of the picture.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a method for reducing image sticking and a liquid crystal display. Background technique [0002] During the display process of the liquid crystal display, the phenomenon of image sticking (Image Sticking) is prone to occur. Among them, image sticking refers to the phenomenon that the same still picture is displayed for a long time, and the previous picture remains after changing the displayed content. [0003] The main cause of image sticking is due to the parasitic capacitance (Cgd) of the thin film transistor (TFT) in the driving circuit of the liquid crystal display. During the display process of the liquid crystal display, when the voltage delivered by the scan line (Gate Line) changes, a feed-through (Feed Through) voltage △V will be generated on the parasitic capacitance Cgd, which makes the data line (Date Line) polarized When inverting, it cannot be symme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
Inventor 卢宇程杨翔
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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