Method and device for driving voltage polarity reversal by liquid crystal panel

A polarity inversion, liquid crystal panel technology, applied in nonlinear optics, instruments, optics, etc., can solve problems such as chromaticity and brightness interference, and achieve the effect of improving screen flicker and chromaticity and brightness quality

Inactive Publication Date: 2009-12-23
BOE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The purpose of the present invention is to provide a method for inverting the polarity of the driving voltage of a liquid crystal panel. A special driving method that combines the advantages of the two inversion methods of point inversion and line inversion can not only solve the problem of the existing polarity inversion driving method Technical defects such as screen flicker and chroma brightness interference appearing in the screen, and reduce power consumption, improve LCD screen flicker and chroma brightness quality

Method used

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  • Method and device for driving voltage polarity reversal by liquid crystal panel
  • Method and device for driving voltage polarity reversal by liquid crystal panel
  • Method and device for driving voltage polarity reversal by liquid crystal panel

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Embodiment Construction

[0035] Figure 4 It is a flow chart of Embodiment 1 of the polarity inversion driving method for a liquid crystal display panel of the present invention. Such as Figure 4 As shown, the grid lines on the liquid crystal panel are divided into a plurality of continuous grid line groups, each grid line group contains at least one row of grid lines, and the number of rows of grid lines in adjacent grid line groups is different from one line at the same time, in one frame , the liquid crystal panel driving voltage polarity inversion method includes the following steps:

[0036] Step 1. Turn on the gate lines of each row in the 2k-1th gate line group sequentially, and apply a first mode voltage to the pixel electrodes on the opened gate line row, and the first mode voltage makes the adjacent rows on the row The pixel electrodes have opposite polarities, and when all gate lines in the frame are turned on once, this step ends; otherwise, step 2 is performed;

[0037] Step 2, turn o...

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Abstract

The invention relates to a method and a device for driving voltage polarity reversal by a liquid crystal panel, wherein the method for polarity reversal comprises the steps of: orderly opening various rows of grid lines in a (2k-1)th grid line group, and applying a first mode voltage on pixel electrodes on the opened grid line rows, wherein the first mode voltage ensures that the adjacent pixel electrodes on the rows have opposite polarities; and orderly opening various rows of grid lines in a 2kth grid line group, and applying a second mode voltage on pixel electrodes on the opened grid line rows, wherein the second mode voltage ensures that the adjacent pixel electrodes on the rows have opposite polarities, the second mode voltage and the first mode voltage have opposite polarities, and k is a natural number. The method and the device combine the advantages of point reversal and line reversal, reduce power consumption, and also solve the problems of picture flickering and crosstalk of chromaticity and luminance that the point reversal appears under certain special conditions.

Description

technical field [0001] The invention relates to a driving method of a liquid crystal panel, in particular to a method and device for inverting the polarity of a driving voltage of a liquid crystal panel. Background technique [0002] Liquid crystal panel display technology is a display technology based on the voltage rotation characteristics of liquid crystal molecules. By changing the driving voltage applied to both ends of the liquid crystal molecules, the liquid crystal molecules are reversed accordingly, so as to achieve the purpose of displaying different pictures. However, in the actual display process, if the liquid crystal molecules continue to work under one driving voltage polarity, the liquid crystal molecules will be damaged and cannot be recovered. Therefore, in the case of keeping the voltage value of the driving voltage at both ends of the liquid crystal molecules unchanged, it is necessary to reverse the voltage polarity of the driving voltage at regular int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G02F1/1362G02F1/133
Inventor 王英
Owner BOE TECH GRP CO LTD
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