Shift register unit and driving method thereof, shift register and display device

A shift register, potential technology, applied in static memory, digital memory information, instruments, etc., can solve problems such as excessive leakage of GOA circuit, and achieve the effect of solving reliability and power consumption problems and solving excessive leakage.

Active Publication Date: 2016-11-16
BOE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The invention provides a shift register unit and its driving method, a shift register and a display device, thereby solving the problem of excessive leakage of GOA circuits and effectively solving the problems of reliability and power consumption of GOA circuits using oxide thin film transistors

Method used

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  • Shift register unit and driving method thereof, shift register and display device
  • Shift register unit and driving method thereof, shift register and display device
  • Shift register unit and driving method thereof, shift register and display device

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Embodiment Construction

[0071] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

[0072] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguis...

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Abstract

The present invention provides a shift register unit and a driving method thereof, a shift register and a display device, by setting a device for disconnecting the electrical connection between the pull-up node PU and the pre-charging module and the pull-down module during the pull-up phase The module is turned off, so that the problem of excessive leakage of the GOA circuit can be solved, and the problem of reliability and power consumption of the GOA circuit using an oxide thin film transistor is effectively solved.

Description

technical field [0001] The invention relates to the field of display, in particular to a shift register unit, a driving method thereof, a shift register and a display device. Background technique [0002] Oxide thin film transistor (Oxide TFT) is the development direction of large-scale active matrix organic light-emitting diode (AMOLED) display / liquid crystal display (LCD), so gate drive is made on the existing GOA (Gate On Array, array substrate) , is widely used. [0003] One of the characteristics of the oxide TFT is that it has a depletion-type characteristic, that is, the threshold voltage of the oxide TFT is negative, which leads to the problem of leakage current in the existing GOA implementation. [0004] in the attached figure 1 In the typical circuit of the existing GOA shown, in the pre-charging stage, due to the large leakage of T4, the charging effect on the gate of T11 is deteriorated; The lowest level can only reach VGL, and the sources of T12, T13 and T14...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/3225G11C19/28
CPCG11C19/28G09G3/3266G09G2310/0286G11C19/184
Inventor 谭文祁小敬
Owner BOE TECH GRP CO LTD
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