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Method and device for eliminating picture residual image

A technology of residual image and picture, applied in the direction of instruments, static indicators, etc., can solve the problems of residual image of the picture, DC voltage cannot be eliminated, etc., and achieve the effect of eliminating the residual image of the picture

Active Publication Date: 2011-05-25
KUSN INFOVISION OPTOELECTRONICS
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Problems solved by technology

[0010] However, since the common electrode voltage is a constant voltage value, it will not have any influence on the orientation of the liquid crystal molecules during the frame-to-frame alternation, that is, during the blank time period, so that the liquid crystal molecules are mixed with ionic organic impurities. The DC voltage cannot be eliminated, so the after-image phenomenon will still occur

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  • Method and device for eliminating picture residual image
  • Method and device for eliminating picture residual image
  • Method and device for eliminating picture residual image

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Embodiment Construction

[0041]In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0042] It is known from the prior art that the liquid crystal molecules sandwiched between the array substrate and the color filter substrate in the liquid crystal display panel are internally generated due to long-term operation in a harsh environment or ionic organic impurities introduced by pollution will induce DC voltage. When the DC voltage alternates between pictures, the viewer will see the current picture, because the previous picture is not eliminated in time, resulting in image overlap with the current picture, resulting in residual image phenomenon. Therefore, in order to overcome the image sticking phenomenon, the present invention eliminates the ions mixed in the liquid crystal molecules during the frame-to-frame alternate period, that is, t...

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Abstract

The invention discloses a method and device for eliminating picture residual image, wherein the device comprises a time sequence module (301) capable of controlling frames, for respectively providing the time sequence information of the frames for a common electrode voltage module (303) and a pulse voltage generation module (302); a common electrode voltage module (303) for generating the direct current voltage in a frame period based on the time sequence information of the frame; a pulse voltage generation module (302) for determining the frame and frame alternation time based on the time sequence information of the frame and generating the pulse voltage in the frame and frame alternation time and loading the pulse voltage on the direct current voltage generated by the common electrode voltage module (303) to obtain a common electrode voltage with pulse and the common electrode voltage with pulse is transmitted to a liquid crystal display panel of the liquid crystal display device. The method and device conveniently eliminate the picture residual image.

Description

technical field [0001] The invention relates to a display driving technology of a liquid crystal display device, in particular to a method and a device for eliminating residual images on a picture. Background technique [0002] Liquid Crystal Display (LCD, Liquid Crystal Display) has the advantages of light, thin, small, low power consumption and low heat, which makes the liquid crystal display stand out among many different types of display devices, and is widely used, such as in computers, mobile phones and personal on modern information devices such as digital assistants. [0003] However, compared with the traditional cathode ray tube (CRT) display device, the liquid crystal display device also has certain disadvantages and limitations. In terms of CRT imaging, it uses an impluse type imaging method. For each pixel on the CRT display device, a single electric beam is irradiated on the pixel coated with fluorescent material to emit light. Pixels emit light only for a sh...

Claims

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Application Information

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IPC IPC(8): G09G3/36
Inventor 戴文君毛联波
Owner KUSN INFOVISION OPTOELECTRONICS