Shifting register and display device

A shift register and carry output technology, applied in static memory, digital memory information, instruments, etc., can solve problems such as the influence of shift registers, and achieve the effect of solving the influence of driving signals, preventing pull-down, and ensuring normal operation.

Active Publication Date: 2015-03-25
BOE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The main purpose of the present invention is to provide a shift register and a display d

Method used

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  • Shifting register and display device
  • Shifting register and display device

Examples

Experimental program
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Effect test

Example

[0050] Such as Figure 5 As shown, the first embodiment of the shift register unit included in the shift register of the present invention includes:

[0051] The first output control module 51, which is connected to the pull-up node PU, is used to pull the pull-up node to a high level in the evaluation phase, and pull the pull-up node to a first low level in the reset phase;

[0052] The second output control module 52, which is connected to the pull-down node PD, is used to pull the pull-down node to a high level during the reset phase and the non-working phase;

[0053] The first output control module 51 includes a first thin film transistor T1, a second thin film transistor T2, a third thin film transistor T3, and a fourth thin film transistor T4;

[0054] The gate and drain of the first thin film transistor T1 are connected to the input terminal Input(n), and the source is connected to the drain of the second thin film transistor T2;

[0055] For the second thin film transistor T2, ...

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PUM

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Abstract

The invention provides a shifting register and a display device. The shifting register comprises a plurality of stages of shifting register units, and each shifting register unit comprises a first output control module, a second output control module, a graded output module and a pull-up node level maintaining capacitor, wherein the graded output module is connected with pull-up nodes, pull-down nodes, a carry signal output end and a driving signal output end and used for outputting carry signals and driving signals in a graded mode so that the driver signals can maintain a high level in the valuation stage and maintain a low level in the reset stage, the pre-charging stage and the non-work stage, the pull-up node level maintaining capacitor is connected between the first low level output end and the source of a first thin film transistor of the first output control module and used for maintaining the level of the pull-up nodes being a high level through the first output control module in the valuation state so that the driving signals can maintain the high level. The shifting register can solve the problem that a shifting register is affected by current leakage of the depletion-type TFT.

Description

[0001] The present invention is a divisional application of the invention whose filing date is July 30, 2012, application number is 201210266145.7, and the title of the invention is "shift register unit, shift register and display device". technical field [0002] The invention relates to the field of organic light-emitting display, in particular to a shift register and a display device. Background technique [0003] With the development of flat panel display, high resolution and narrow bezel become the trend of development, and to realize high resolution and narrow bezel display, integrating gate drive circuit on the panel is the most important solution. For a-si (amorphous silicon) and p-si (polysilicon) technologies, various existing mature shift register circuits can well achieve this goal. Oxide TFT (transistor), as a very potential semiconductor technology, is simpler and lower cost than p-si process, and has higher mobility than a-si, so it is getting more and more at...

Claims

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Application Information

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IPC IPC(8): G09G3/32G11C19/28G09G3/3266
Inventor 青海刚祁小敬
Owner BOE TECH GRP CO LTD
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