Shift Register Noise Resistance via Segmented Feedback
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Solution Overview
Problem
The circuit structure of shift registers in gate driving circuits formed using the Gate Driver on Array (GOA) technique lacks reasonable design, resulting in poor noise resistance capacity.
Innovation Solution
Incorporating a first feedback module with at least two feedback units, each connected to different control points, and a pull-down module, allowing for independent control of the connection between the pull-down module and the first level input terminal, ensuring the shift register can operate even if one feedback unit is unstable or damaged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single feedback unit is used in the shift register, then the device complexity is reduced, but the noise resistance capacity deteriorates
Solution Approach 1:
The feedback module is segmented into multiple feedback units (first feedback unit, second feedback unit, etc.), each with its own control terminal connected to different control points. This segmentation allows the system to maintain functionality even when individual units are affected by noise or failure, thereby improving noise resistance capacity while managing device complexity through modular design.
2Reliability
If multiple feedback units are added to improve noise resistance, then the reliability is improved, but the device complexity increases
Solution Approach 1:
Multiple feedback units are designed with identical structural configurations, each capable of performing the same feedback function. This universality allows the system to achieve improved noise resistance through redundancy while maintaining manageable complexity, as each unit follows the same design pattern and can be controlled independently through different control points.
3Reliability
If feedback units are made independently controllable, then the noise resistance capacity is improved, but the control complexity increases
Solution Approach 1:
Each feedback unit is equipped with its own control terminal that receives control signals from different control points. This feedback mechanism allows independent control of each feedback unit, enabling the system to adapt to noise conditions and maintain reliable operation. The control complexity is managed by providing dedicated control paths for each unit rather than requiring complex coordination mechanisms.
Data Source
AI summary
There are presented a shift register and a driving method thereof, a gate driving circuit and a display apparatus. The shift register includes a first feedback module and a pull-down module, wherein the first feedback module comprises at least two feedback units, control terminals of respective feedback units are connected to different control points respectively, each feedback unit has an input terminal connected to a first level input terminal and an output terminal connected to a first node, the first node is connected to a control terminal of the pull-down module, and the pull-down module has an input terminal connected to the first level input terminal and an output terminal connected to a signal output terminal of the shift register. The shift register is used to enhance noise resistance capability of the shift register.