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Gate driver on array (GOA) circuit and driving method

A gate drive and array technology, applied in digital memory information, instruments, optics, etc., can solve problems such as reducing product quality, charging differences in display devices, and increasing power consumption of source driver ICs

Active Publication Date: 2016-09-14
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing GOA circuits are designed for the column inversion driving mode
If the GOA unit still adopts the pre-charging mode corresponding to the column inversion driving mode during pre-charging, it will cause a difference in the charging of the odd-numbered and even-numbered row display devices, resulting in inconsistent brightness, horizontal stripes, and increased power consumption of the source driver IC. , and reduce product quality

Method used

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  • Gate driver on array (GOA) circuit and driving method
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  • Gate driver on array (GOA) circuit and driving method

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings of the present invention. It should be understood that the specific embodiments of the present invention are only illustrative, and not intended to limit the protection scope of the present invention.

[0046] Hereinafter, unless otherwise specified, the term "coupled" means that an element is coupled to another element or elements "directly" or "indirectly" through one or more other elements. In the embodiment, the switch tube used is an example of an N-type field effect (MOS) transistor, and a P-type field effect transistor, and a P-type or N-type bipolar (BJT) transistor can also be used to realize the function of the switch tube. Since the source and drain (emitter and collector) of the transistor are symmetrical, and the conduction current direction between the source and drain (emitter and collector) of ...

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PUM

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Abstract

The embodiment of the invention relates to an improved gate driver on array (GOA) unit. The GOA unit comprises an input module, a reset module, a control module, a pull-up module and a pull-down module, and further comprises an output gating module used for receiving control signals so as to selectively output GOA signals, an output pull-down module used for receiving GOA signals of the last GOA unit, and a cascading node used for maintaining a time sequence. The invention also relates to a circuit with the GOA unit, a display apparatus comprising the GOA unit and the circuit, and a driving method. According to the invention, the GOA circuit can be prevented from odd-row and even-row charging differences when being pre-charged at a point reverse driving mode.

Description

technical field [0001] The present invention relates to the display field, and in particular to an array gate driving unit, an array gate driving circuit, a display device having the array gate driving unit and the driving circuit, and an array gate driving method. Background technique [0002] The gate driver on array (Gate driver On Array, GOA) technology is a technology for integrating a gate driver IC (Gate Driver IC) on an array substrate. Existing GOA circuits generally adopt a dot inversion driving mode or a column inversion driving mode. Due to the better performance of the dot inversion driving mode than the column inversion driving mode, the dot inversion driving mode is generally preferred. Before pixel writing is performed on the display device, it needs to be precharged. However, most of the existing GOA circuits are designed for the column inversion driving mode. If the GOA unit still adopts the pre-charging mode corresponding to the column inversion driving...

Claims

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/3674G09G3/3677G09G3/3614G09G2310/0286G11C19/28G09G3/36G02F1/13306G02F1/1343
Inventor 王慧赵剑
Owner BOE TECH GRP CO LTD
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