Shifting register unit, gate driving circuit and display device

A shift register and gate technology, applied in instruments, static indicators, etc., can solve problems such as high duty cycle voltage, pull-down transistor aging, and reduced mobility, so as to improve life and reduce gate duty cycle voltage Effect

Active Publication Date: 2015-07-15
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the gate of the pull-down transistor is in a high level state for a long time, with a very high duty ratio voltage, and this method will cause the pull-down transistor to age rapidly, reduce the mobility, and the current will drop, causing problems in the overall circuit. thereby affecting product life

Method used

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  • Shifting register unit, gate driving circuit and display device
  • Shifting register unit, gate driving circuit and display device
  • Shifting register unit, gate driving circuit and display device

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Embodiment Construction

[0047] In the shift register unit, the gate drive circuit and the display device of the embodiment of the present invention, for the pull-down of the pull-down node and the output node, at least two pull-down modules work alternately to realize the pull-down of the pull-down node and the output node, so that every The required turn-on time of a pull-down module is less than 50%, so the life of the pull-down transistor in the pull-down module can be improved, thereby improving the life of the entire register unit.

[0048] A shift register unit according to an embodiment of the present invention has a capacitor unit (ie, a bootstrap capacitor), and the capacitor unit is connected to an output node of the first stage, wherein the shift register unit also includes at least two transistors The composed pull-down modules are respectively electrically connected to the two ends of the capacitor unit. When the output node of the current stage needs to output a low level, the at least t...

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PUM

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Abstract

The invention relates to the technology of shifting registration, and in particular relates to a shifting register unit, a gate driving circuit and a display device. The shifting register unit comprises a capacitance unit and at least two pull-down modules consisting of transistors, wherein the capacitance unit is connected with a same-level output node; the pull-down modules are respectively and electrically connected with the two ends of the capacitance unit; and when the same-level output node is required to output low level, the at least two pull-down modules are alternately in a working state, and the two ends of the capacitance unit are controlled to be in low level. According to the invention, the service life of the shifting register unit is prolonged.

Description

technical field [0001] The invention relates to a shift register technology, in particular to a shift register unit, a gate drive circuit and a display device. Background technique [0002] The integrated gate shift register integrates the gate pulse output register on the panel, which saves IC and reduces the cost. There are many ways to realize the integrated gate shift register, which can contain different transistors and capacitors. The commonly used structures are 12T1C, 9T1C, 13T1C and so on. [0003] Generally speaking, a shift register is composed of multi-level shift register units, and each level of shift register units only outputs a high-level signal in a very short time, and outputs a low-level signal at other times. Usually VSS signal. [0004] As mentioned above, the shift register unit of each stage only outputs a high-level signal in a very short period of time, and outputs a low-level signal at other times, which usually accounts for more than 99% of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/20
Inventor 王峥
Owner BOE TECH GRP CO LTD
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