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Shift register unit and driving method thereof, grid electrode drive circuit and display device

A shift register and control electrode technology, applied in static memory, digital memory information, instruments, etc., can solve the problems of reducing driving capability, difficult to apply to large-size liquid crystal display devices, increasing power consumption of driving circuits, etc. Power consumption, good display effect, flexible driving effect

Active Publication Date: 2015-08-12
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the driving circuit is usually driven by an AC signal, which inevitably has a certain signal delay effect, increases the power consumption of the driving circuit, reduces the driving ability, and is difficult to apply to large-size liquid crystal display devices.

Method used

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  • Shift register unit and driving method thereof, grid electrode drive circuit and display device
  • Shift register unit and driving method thereof, grid electrode drive circuit and display device
  • Shift register unit and driving method thereof, grid electrode drive circuit and display device

Examples

Experimental program
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Effect test

Embodiment 1

[0059] This embodiment provides a shift register unit, the shift register unit uses a DC voltage as the input signal of the main transistor, the output is stable and the drive capability is strong; at the same time, the DC signal controls the transistor of the input module and the pull-down control module, which can greatly reduce the shift. The power consumption of the bit register cell during the pull-up and pull-down phases.

[0060] The shift register unit receives an input voltage through an input end, and provides a shifted output voltage through an output end. like figure 1 As shown, the shift register unit includes an input module 1, a pull-down control module 2, a pull-down module 3, a pull-up module 4 and a reset module 5, the pull-down control module 2 acts on the pull-down module 3, and the pull-down module 3 acts on the pull-up module 4. The pull-up module 4 acts on the pull-down control module 2 through the pull-down point, wherein:

[0061] The input module 1...

Embodiment 2

[0105] This embodiment provides a gate driving circuit, including the shift register unit in Embodiment 1.

[0106] In this gate drive circuit, the input modules of the shift register units at all levels control the signal conduction path according to the potential of the turn-on voltage, and control the signal conduction path between the DC signal and the output terminal through the potential of the pull-up point PU to provide a shifted output voltage. Specifically, such as Figure 4 As shown, in the gate drive circuit, a plurality of shift register units are connected in cascade, wherein: the output signal of the second output terminal of the shift register unit of the upper stage is connected to the input module of the shift register unit, and the shift register unit of the next stage The output signal of the second output terminal of the bit register unit is connected to the reset module of the shift register unit; or it can be said that the second output terminal of the ...

Embodiment 3

[0113] This embodiment provides a display device, including the gate driving circuit in Embodiment 2.

[0114] The display device may be any product or component with a display function such as a liquid crystal panel, an electronic paper, an OLED panel, a mobile phone, a tablet computer, a television, a display device, a notebook computer, a digital photo frame, a navigator, and the like.

[0115] The display device can be a large-size display panel with low power consumption and good display effect.

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Abstract

The invention belongs to the display technical field, and specifically relates to a shift register unit and a driving method thereof, a grid electrode drive circuit and a display device; the shift register unit comprises the following elements: an input module used for outputting a pull-up control signal to a pull-up module according to a first DC voltage signal and a start signal; the pull-up module used for outputting a same level shift register signal through a first output end according to a second DC voltage signal and a clock signal, and used for outputting a start signal of a next level shift register unit through a second output end; a pull-down control module used for outputting a pull-down control signal to a pull-down module according to the second DC voltage signal, a third DC voltage signal and the clock signal; a pull-down module used for outputting a pull-down signal of a first output end, a second output end and a pull-up point to the pull-up module; a reset module used for outputting a reset signal to the pull-up module according to a fourth DC signal and the reset signal. The shift register unit uses DC voltage to serve as input signals of the pull-up module and the pull-down control module, and is stable, and small in power consumption.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a shift register unit, a driving method thereof, a gate driving circuit and a display device. Background technique [0002] The driving method of traditional display devices is to use an external driver chip to drive the pixels on the display panel to display images. In order to reduce the number of components and reduce manufacturing costs, it has become a mainstream technology to directly fabricate the structure of the driving circuit on the display panel in recent years, such as The technology of integrating the gate driving circuit into the liquid crystal panel (Gate On Array, GOA for short) is applied. [0003] At present, the driving circuit is usually driven by an AC signal, which inevitably has a certain signal delay effect, increases the power consumption of the driving circuit, reduces the driving capability, and is difficult to apply to a large-size liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G11C19/28
CPCG09G3/36G11C19/28G09G3/3677
Inventor 李金钰曹雪
Owner BOE TECH GRP CO LTD
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