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Drive method for pre-charging pixel by LCD device

A technology of a liquid crystal display device and a driving method, which can be used in static indicators, nonlinear optics, instruments, etc., can solve the problems of insufficient charging of storage capacitors and weak lateral bright lines.

Inactive Publication Date: 2010-08-25
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a driving method for precharging pixels of a liquid crystal display device, which effectively solves the defect of insufficiently charging the storage capacitor in the prior art and produces weak lateral bright lines.

Method used

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  • Drive method for pre-charging pixel by LCD device
  • Drive method for pre-charging pixel by LCD device
  • Drive method for pre-charging pixel by LCD device

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Experimental program
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Embodiment Construction

[0034] Fig. 1 is a flowchart of a driving method for precharging a pixel by a liquid crystal display device of the present invention, and the specific steps are:

[0035] Step 1. The gate start signal STV sends a high level, and the first row of TFTs is charged;

[0036] Step 2. At the time of the falling edge of the gate movement signal CPV, set M=2, N=3;

[0037] Step 3. Turn on the M-th row of TFTs and the N-th row of TFTs at the same time;

[0038] Step 4. At the falling edge of the data output control signal TP, the source driver outputs the data of the Nth row of TFTs and loads them on the storage capacitors of the Mth row and Nth row of TFTs, so that the Mth row of TFTs and the Nth row of TFTs are simultaneously start charging;

[0039] Step 5. At the next rising edge of the gate movement signal CPV, turn off the Nth row of TFTs, and the source driver outputs the data of the Mth row of TFTs and loads it to the storage capacitor of the Mth row of TFTs, so that the Mth ...

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Abstract

The invention relates to a drive method that precharging is carried out on pixels by a liquid crystal display device. The grids of two adjacent lines of thin film transistors are opened simultaneously, then, the grids of the thin film transistor in the lower line are firstly closed, and the grids of the thin film transistor in the upper line are closed after the grids of the thin film transistor in the alternate line are opened, thus leading the opening time of thin film transistor in the upper line to be two times that of the proposal of the prior art and causing the charging interval of thethin film transistor to be lengthened; storage capacitance is charged fully, so as to thoroughly eliminate the phenomenon of traverse weak bright lines. The drive method can be operated easily, does not need any increase of cost and effectively improves the image quality.

Description

technical field [0001] The invention relates to a control method of a liquid crystal display, in particular to a driving method for a liquid crystal display device to precharge pixels. Background technique [0002] In the control sequence output by the traditional timing controller (Timing Controller, T / CON for short) currently used, the opening and closing of the gate is controlled by a gate movement signal (Clock Plus Vertical, CPV for short). The specific control process is as follows: the gate start signal (Start Vertical, referred to as STV) sends out a high level, indicating that the gate can be turned on; The gate of the TFT) is turned on, at this time, the data is loaded to the storage capacitors at both ends of the first row of liquid crystals through the source of the TFT, and the first row of TFTs starts to charge; when the next rising edge of the gate moving signal arrives, the first row of TFTs The gate of the TFT is turned off, the corresponding data is loaded...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/20G02F1/1362
Inventor 窦芳
Owner BOE TECH GRP CO LTD