Control apparatus for display device and control method for level conversion module

A control device and conversion module technology, applied to static indicators, instruments, etc., can solve problems such as afterimages, prolonged transistor voltage drop time, and delays

Active Publication Date: 2021-08-03
CHENGDU ZHONGDIAN PANDA DISPLAY TECH CO LTD +1
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, the delay of the gate drive circuit driving the transistor is serious. For example, the transistor is switched from the on state to the off state, and the time for the voltage of the transistor to drop becomes longer, resulting in a slow discharge speed of the TFT-LCD panel and afterimages.

Method used

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  • Control apparatus for display device and control method for level conversion module
  • Control apparatus for display device and control method for level conversion module
  • Control apparatus for display device and control method for level conversion module

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Embodiment Construction

[0046] In order to make the purpose, technical solutions and advantages of the application clearer, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the embodiments of the application. Obviously, the described embodiments are part of the implementation of the application. example, not all examples. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0047] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to Describe a particular order or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the applicati...

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Abstract

The invention provides a control device for a display device and a control method for a level conversion module, the control device comprises the level conversion module, a pull-up circuit and a gate drive circuit, and the level conversion module is connected with the pull-up circuit and the gate of a plurality of transistors in the gate drive circuit. A first negative voltage module in the pull-up circuit is connected with the source electrodes of part of the transistors, and a second negative voltage module is connected with the source electrodes of the remaining part of the transistors. When the level conversion module receives a power-down signal, voltage of grids of a plurality of transistors in the grid driving circuit can be pulled up to be first voltage, voltage of a first negative voltage module and a second negative voltage module can be pulled up to be second voltage, the second voltage is smaller than the first voltage, and the second voltage is opening voltage Vgh of the plurality of transistors. The voltage of the grid electrode of the transistor in the liquid crystal panel can be pulled up to be high voltage, and then the discharging speed of the liquid crystal panel is increased.

Description

technical field [0001] The present application relates to the technical field of liquid crystal displays, in particular to a control device for a display device and a control method for a level conversion module. Background technique [0002] The array substrate gate driver (gate driver on array, GOA) technology is a technology for fabricating gate driver ICs on the array substrate. At present, the gate driving circuit can be directly built around the thin-film transistor liquid-crystal display (TFT-LCD) panel, which improves the integration of the TFT-LCD panel and makes the TFT-LCD panel thinner. [0003] As the size of the TFT-LCD panel continues to increase, the number of transistors on the scan line in the TFT-LCD panel increases, and the impedance increases. Therefore, the time delay of the gate drive circuit driving the transistor is serious. If the transistor is switched from the on state to the off state, the time for the transistor voltage to drop becomes longer, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/36G09G3/3677G09G2320/0257
Inventor 李文东
Owner CHENGDU ZHONGDIAN PANDA DISPLAY TECH CO LTD
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