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Source driving device, polarity reversal control method thereof, and liquid crystal display device

A technology of polarity inversion and source drive, applied in the field of liquid crystal display devices and source drive devices, which can solve the problems of image sticking, DC residual, etc.

Inactive Publication Date: 2017-03-08
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, an embodiment of the present invention provides a source driver device, its polarity inversion control method, and a liquid crystal display device to solve the problem of image sticking caused by DC residue in the existing 2D De-Interlace mode

Method used

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  • Source driving device, polarity reversal control method thereof, and liquid crystal display device
  • Source driving device, polarity reversal control method thereof, and liquid crystal display device
  • Source driving device, polarity reversal control method thereof, and liquid crystal display device

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Embodiment Construction

[0039] The specific implementation manners of the source driver device, its polarity inversion control method and the liquid crystal display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] A source driving device provided by an embodiment of the present invention, such as figure 1 As shown, it specifically includes: a positive and negative polarity inversion control unit 100, and a polarity signal control unit 200; wherein,

[0041] The positive and negative polarity inversion control unit 100 specifically includes: a first channel selection module 101 connected in sequence, a positive voltage channel 102 and a negative voltage channel 103, and a second channel selection module 104; wherein the first channel selection module 101 is respectively It is connected to two signal input terminals a and b, and the second channel selection module 104 is connected to two signal output ter...

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Abstract

The invention discloses a source driving device, a polarity reversal control method thereof, and a liquid crystal display device. A polarity signal control unit is added to the source driving device, and the output end of the polarity signal control unit is connected with control ends of a first channel selection module and a second channel selection module in the positive and negative polarity reversal control unit. Trigger control signals inputted to the control end of the polarity signal control unit are adopted to control the reversal condition of polarity reversal control signals outputted by the polarity signal control unit, and particularly, after the trigger control signals are inputted to the control end of the polarity signal control unit at each time, the polarity signal control unit carries out polarity reversal on the original to-be-outputted polarity reversal control signals and then outputs the polarity reversal control signals, or otherwise, the polarity of the original outputted polarity reversal control signals is kept. Thus, the positive and negative polarity reversal control unit carries out control on the polarity of the outputted signals according to the received polarity reversal control signals, a DC residue problem can be avoided, and an afterimage phenomenon is eliminated.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a source driving device, a polarity inversion control method thereof, and a liquid crystal display device. Background technique [0002] A thin film transistor liquid crystal display (TFT-LCD) uses the optical anisotropy and birefringence properties of liquid crystal molecules to display images. Specifically, according to the video signal, the electric field generated by the electrodes on the surface of the substrate changes the arrangement direction of the liquid crystal molecules, controls the light transmittance of the liquid crystal cell, and thus displays the picture. Generally, TFT-LCD is driven by the alternating voltage polarity method, in which the voltage polarity is alternated between adjacent liquid crystal cells and between continuous frame periods, in order to reduce the deterioration of liquid crystals and enable liquid crystals to Maintain normal c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3614G09G2320/0257G09G3/3685
Inventor 梁恒镇
Owner BOE TECH GRP CO LTD
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