Gate drive circuit, array substrate and liquid crystal display device

A gate drive circuit and gate signal technology, which is applied in the field of array substrates, liquid crystal display devices, and gate drive circuits, can solve problems such as poor display effects, and achieve the effect of improving display effects

Active Publication Date: 2015-08-12
HEFEI BOE OPTOELECTRONICS TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the change of the gate voltage will cause the pixel electrode voltage to generate a jump voltage (Feed through Voltage) through the parasitic capacitance or storage capacitance. Therefore, after the pixel TFT is turned off, the process of the gate voltage changing from high voltage to low voltage will make The pixel electrode generates a jump voltage and makes the actual pixel voltage less than the charging voltage provided by the data line when the pixel TFT is turned on, resulting in poor display effect

Method used

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  • Gate drive circuit, array substrate and liquid crystal display device
  • Gate drive circuit, array substrate and liquid crystal display device
  • Gate drive circuit, array substrate and liquid crystal display device

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0039] Such as figure 1 and figure 2 As shown, the embodiment of the present invention provides a gate drive circuit, including: a first voltage generating unit 1, configured to generate a first voltage V1 in a row of scanning time T, and a row of scanning time T is sequentially composed of the first stage T1 and The second stage T2 is composed of; the second voltage generating unit 2 is used to generate the second voltage V2 in the first stage T1; the opening un...

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Abstract

The invention discloses a grid drive circuit, a method thereof, an array substrate and a liquid crystal display device and relates to the technical field of liquid crystal display, so an actual pixel voltage is closer to a charge voltage and the display effect is improved. The grid drive circuit comprises a first voltage generating unit, a second voltage generating unit, a starting unit and a cut-off unit; the first voltage generating unit is used for generating a first voltage in one-line scanning time, wherein the one-line scanning time is formed by a first stage and a second stage; the second voltage generating unit is used for generating a second voltage in the first stage; the starting unit is used for outputting the sum of the first voltage and the second voltage in the first stage and outputting the first voltage in the second stage; the cut-off unit is used for outputting a cut-off voltage at the end of the one-line scanning time.

Description

technical field [0001] The present invention relates to the technical field of liquid crystal display, in particular to a gate drive circuit, an array substrate and a liquid crystal display device. Background technique [0002] The current liquid crystal display usually controls the thin film transistor (Thin Film Transistor, TFT) of each row of pixels through the second-order gate voltage, that is, provides high voltage and low voltage. When the high voltage is high, the pixel TFT is turned on, and the data line charges the pixel electrode to Pixel voltage, the pixel TFT is turned off when the voltage is low, and the pixel voltage is stored. [0003] However, the change of the gate voltage will cause the pixel electrode voltage to generate a jump voltage (Feed through Voltage) through the parasitic capacitance or storage capacitance. Therefore, after the pixel TFT is turned off, the process of the gate voltage changing from high voltage to low voltage will make The pixel e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
Inventor 刘荣铖
Owner HEFEI BOE OPTOELECTRONICS TECH
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