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Discharge circuit and liquid crystal display device adopting the discharge circuit

A technology of liquid crystal display device and discharge circuit, which is applied in the direction of static indicators, instruments, etc., can solve the problem of increasing the extra power consumption of the system, and achieve the effect of improving the phenomenon and the afterimage after shutdown

Active Publication Date: 2008-01-09
INNOCOM TECH SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of increasing the extra power consumption of the system during normal operation of the liquid crystal display device in the prior art, the present invention provides a discharge circuit that does not increase the extra power consumption of the system during normal operation

Method used

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  • Discharge circuit and liquid crystal display device adopting the discharge circuit
  • Discharge circuit and liquid crystal display device adopting the discharge circuit

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Embodiment Construction

[0013] Please refer to FIG. 1 , which is a schematic diagram of a liquid crystal display device of the present invention. The liquid crystal display device 2 includes a data driver 21 , a scan driver 22 , a plurality of data lines 211 , a plurality of scan lines 221 , a plurality of thin film transistors 201 , a plurality of pixel units 202 and a plurality of storage capacitors 203 . The scan driver 22 includes a discharge circuit 220 .

[0014] The plurality of data lines 211 are electrically connected to the data driver 21 , and the plurality of scan lines 221 are electrically connected to the scan driver 22 . The plurality of thin film transistors 201 are located at the intersections of the plurality of data lines 211 and the plurality of scan lines 221, their gates are electrically connected to the plurality of scan lines 221, their sources are electrically connected to the plurality of data lines 211, and their drains are respectively connected to The plurality of pixel ...

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Abstract

The invention relates to a discharge circuit, comprising: a first input end, a second input end, a level generating circuit, a transistor and a resistor, where the first input end is connected with the source of the transistor, the second input end is connected with the grid of the transistor through the level generating circuit, the drain of the transistor is earthed through the resistor, the level generating circuit receives a working voltage at the second input end and then generates a high level to turn on the transistor, and external charges are released through a discharge circuit composed of the first input end and the transistor. And the invention provides a LCD adopting the discharge circuit.

Description

technical field [0001] The invention relates to a discharge circuit and a liquid crystal display device using the discharge circuit. Background technique [0002] When the liquid crystal display device is turned off or suddenly cut off, the thin film transistor controlling the liquid crystal pixel is in the off state, but the off voltage applied to the gate of the thin film transistor cannot quickly become 0 volts, so the voltage applied to both ends of the liquid crystal pixel cannot be quickly turned off. Discharge, resulting in afterimage after shutdown. For this reason, the industry has developed various technologies to improve the afterimage phenomenon after shutdown. [0003] A prior art liquid crystal display device for improving the afterimage phenomenon after power off is to connect a resistor in series between the off voltage input terminal (Vgl) and the ground to speed up the discharge speed of the off voltage of the gate of the thin film transistor, thereby spee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G09G3/20
Inventor 吴绍强
Owner INNOCOM TECH SHENZHEN
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