Liquid crystal display device and signal driving method thereof

A technology of liquid crystal display device and grayscale signal, which is applied to static indicators, instruments, etc., can solve the problem of not being able to overdrive the display effect, and achieve the effect of avoiding incorrect twisting angle and saving costs.

Inactive Publication Date: 2012-02-08
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
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Problems solved by technology

[0006] The present invention provides a liquid crystal display device and its signal driving method that does not need to use a frame buffer and can realize overdrive within one frame, so as to solve the problem that the liquid crystal display device and its signal driving method in the prior art cannot be realized within one frame Technical issues with overdrive, needing a framebuffer to cache data, and poor display

Method used

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  • Liquid crystal display device and signal driving method thereof
  • Liquid crystal display device and signal driving method thereof
  • Liquid crystal display device and signal driving method thereof

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Embodiment Construction

[0023] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are for reference only The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0024] In the figures, structurally similar units are denoted by the same reference numerals.

[0025] The liquid crystal display device of the present invention uses a high voltage before each grayscale signal is written into the pixel through the cooperation of the pre-charge in the frame and the high and low level signals of the array common line (Array com). Precharging the pixels is equivalent to overdriving before the grayscale signal is written ...

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Abstract

The invention discloses a liquid crystal display device which is capable of pre-charging a high voltage to a pixel prior to writing each correct grey scale signal by pre-charging in a frame and the incorporating of high-low level signals of multiple groups of concentration lines, which means that overdrive is implemented before writing the correct grey scale signal into the pixel. The invention also discloses a signal driving method of the liquid crystal display device. Compared with the prior art, a frame buffer is not needed to be adopted in the invention, so the cost is saved; furthermore, overdrive can be carried out without using a complex timing function.

Description

【Technical field】 [0001] The invention relates to the display field, in particular to a liquid crystal display device and a signal driving method thereof. 【Background technique】 [0002] Overdriving (Over Driving) technology is a technology used to improve the display effect of a liquid crystal display panel. The traditional overdrive technology generally compares the front and back image signals with a look-up table to find a predefined inter-difference voltage value to improve the response speed. This method requires the use of a frame buffer (Frame Buffer) to store the previous image, and then compares it with the previous image. For comparison with the current image, the above-mentioned pre-defined interpolation voltage value also needs to be stored in the memory, and the cooperation of a timing controller (Time Control Register, TCON) is also required. [0003] The general way to realize the overdrive function with column drive is as follows: figure 1 As shown, when t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3614G09G3/3607G09G3/3655G09G2300/0426G09G2310/0251
Inventor 康志聪
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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