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Gate drive method, system and device of liquid crystal display panel

A liquid crystal display panel and gate drive technology, which is applied to static indicators, instruments, etc., can solve problems such as threshold voltage drift, and achieve the effects of reducing difficulty, improving work performance, and reducing requirements

Inactive Publication Date: 2016-12-07
KUSN INFOVISION OPTOELECTRONICS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The main purpose of the present invention is to propose a gate driving method, system and device for a liquid crystal display panel, aiming to solve the problem of TFT threshold voltage (Vth) drift in the prior art,

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Embodiment Construction

[0041] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0042] Various embodiments for implementing the present invention will now be described with reference to the accompanying drawings. In the following description, use of suffixes such as 'module', 'part' or 'unit' for denoting elements is only for facilitating description of the present invention and has no specific meaning by itself.

[0043] Such as figure 2 As shown, the first embodiment of the present invention proposes a gate driving method for a liquid crystal display panel, the method comprising: steps:

[0044] S1: Detecting the current-voltage characteristic of at least one thin film transistor of the liquid crystal display panel;

[0045] In this embodiment, step S1 includes:

[0046] S1.0: Input different gate voltage values ​​V GS to the gate of the thin film transistor;

[0047] S1.1: Get different ...

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Abstract

The invention discloses a gate drive method, a gate drive system and a gate drive device of a liquid crystal display panel. The gate drive method comprises the following steps: S1, carrying out detection to obtain current-voltage characteristics of at least one thin film transistor of the liquid crystal display panel; S2, according to the current-voltage characteristics of the at least one thin film transistor, acquiring the off-state current Ioff of the at least one thin film transistor and the voltage values corresponding to the off-state current Ioff; and S3, according to the off-state current Ioff and the voltage values, adjusting the grid working voltage VGL of the at least one thin film transistor of the liquid crystal display panel. With the adoption of the method, the system and the device, the threshold voltage (Vth) drift of a gate drive circuit is solved, the working performance of the liquid crystal display panel is promoted, and the service life of the liquid crystal display panel is prolonged; in addition, the requirements of the gate drive circuit for the threshold voltage (Vth) drift are lowered, and thus the processing difficulty of factories is reduced.

Description

technical field [0001] The present invention relates to the field of liquid crystal display, in particular to a gate driving method, system and device of a liquid crystal display panel. Background technique [0002] Such as figure 1 The structural diagram of the liquid crystal display device shown. The liquid crystal display device includes a liquid crystal display panel, a data driver, a gate driver, a gamma reference voltage generator, a common voltage generator, a gate driving voltage generator and a timing controller. The gate driving voltage generator is supplied with a high-level power supply voltage VDD to generate a gate high voltage VGH and a gate low voltage VGL, and supplies the gate high voltage VGH and the gate low voltage VGL to the gate driver. Here, the gate driving voltage generator generates a gate high voltage VGH higher than a threshold voltage (Vth) of a TFT provided in each pixel of the liquid crystal display panel and a gate low voltage VGL lower tha...

Claims

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/3677
Inventor 李海波邹忠飞郑会龙何钰莹
Owner KUSN INFOVISION OPTOELECTRONICS
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