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Liquid crystal display device and drive method thereof

A technology of liquid crystal display device and gray-scale driving signal, which is applied to static indicators, instruments, etc., can solve problems such as status detection signal error and abnormal image display, and achieve the effect of preventing abnormal image.

Active Publication Date: 2017-05-31
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during system power-on or mode switching, the state detection signal of timing controller 1200 may be wrong, resulting in abnormal image display

Method used

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  • Liquid crystal display device and drive method thereof
  • Liquid crystal display device and drive method thereof
  • Liquid crystal display device and drive method thereof

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Embodiment Construction

[0032] Various embodiments of the invention will be described in more detail below with reference to the accompanying drawings. In the various drawings, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale.

[0033] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] image 3 A schematic block diagram showing a data interface of a liquid crystal display device according to the prior art. exist image 3 A part of the liquid crystal display device, that is, the sequence controller 1200 is shown in . The timing controller 1200 is connected with the front-end video processor 1100 via a data interface. The data interface is, for example, a digital interface of the DisplayPort protocol, such as an embedded display port (eDP). The following takes the eDP ...

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Abstract

The invention discloses a liquid crystal display device and a drive method thereof. The liquid crystal display device comprises a plurality of pixel units, a public electrode, a time sequence controller, a grid driver, a source driver and a state detecting circuit, wherein each pixel unit comprises a pixel electrode and a thin-film transistor which are connected with each other; pixel capacitors are formed between the public electrode and the pixel electrodes; the time sequence controller is used for generating a time sequence signal and a grayscale drive signal according to video data; the grid driver is used for gating the thin-film transistors of the pixel units; the source driver is used for providing grayscale voltage for the pixel electrodes; the state detecting circuit generates a state detecting signal according to the power supply voltage and reset signal of the time sequence controller, and the time sequence controller receives the video data when the state detecting signal is effective. The liquid crystal display device uses the reset signal of the time sequence controller to clamp the state detecting signal so as to prevent image abnormity.

Description

technical field [0001] The present invention relates to the field of display technology, and more particularly, to a liquid crystal display device and a driving method thereof. Background technique [0002] A liquid crystal display device is a display device that uses the phenomenon that the alignment direction of liquid crystal molecules changes under the action of an electric field to change the light transmittance of a light source. Liquid crystal display devices have been widely used in mobile terminals such as cell phones and large-sized display panels such as flat TVs. [0003] figure 1 and 2 A schematic structural diagram and an equivalent circuit diagram of a liquid crystal display device according to the prior art are respectively shown. The liquid crystal display device 100 includes a first glass substrate 110 and a second glass substrate 210 , the first surface of the first glass substrate 110 is opposite to the first surface of the second glass substrate 210 ....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/36
Inventor 吴二平闫小能王晴石靖李佳
Owner KUSN INFOVISION OPTOELECTRONICS
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