Reset Circuit for Shift Register Voltage Control
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Solution Overview
Problem
In gate driving circuits, the last stages of shift register circuits lack a coupled gate load, resulting in the generation of reset signals with large voltages that can adversely affect the operation of previous stages, necessitating separate reset shift register circuits which can impact the operation characteristics.
Innovation Solution
A reset circuit comprising a first and second adjustment control circuit and a storage circuit, utilizing thin film transistors and capacitors, is introduced to reduce the voltage of reset signals applied to shift register circuits, thereby mitigating the adverse effects of large voltage reset signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the last stage of shift register circuit generates reset signal without coupled gate load, then the reset signal voltage becomes large, but this large voltage adversely affects the operation of previous stages of shift register circuit
Solution Approach 1:
The patent introduces a reset circuit as an intermediary component between the last stage shift register circuit and the previous stages. This reset circuit includes a first adjustment control circuit and a second adjustment control circuit that work together to mediate the reset signal, reducing its voltage from the high level generated by the last stage to a safe level that does not adversely affect previous stages, while still maintaining the necessary reset function.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the voltage level of the reset signal through control circuits. The first adjustment control circuit and second adjustment control circuit modify the electrical parameters (voltage) of the reset signal based on the operational state, transforming it from a high-voltage signal that causes harm to a controlled-voltage signal that performs the desired reset function without adverse effects.
2Ease of manufacture
If separate reset shift register circuits are provided for last stages, then the reset function can be implemented, but the operation characteristics of the last stages are adversely affected
Solution Approach 1:
The patent merges the reset function with the existing shift register circuit structure by integrating a reset circuit into the last stage rather than providing completely separate reset shift register circuits. This integration allows the reset function to be implemented while maintaining the operational characteristics of the last stage shift register circuit, as the reset circuit is designed to work in conjunction with rather than independently from the main circuit.
3Object-affected harmful factors
If reset circuit with adjustment control circuits is used, then the voltage of reset signal is reduced, but the device complexity increases
Solution Approach 1:
The patent segments the voltage reduction function into two distinct control circuits: a first adjustment control circuit and a second adjustment control circuit. Each circuit performs a specific portion of the voltage adjustment task, which allows for more manageable and potentially simpler implementation of each individual circuit while achieving the overall goal of significant voltage reduction. This segmentation makes the complex function more modular and easier to implement.
Data Source
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AI summary
The present disclosure provides a reset circuit for a shift register circuit, a shift register circuit, a gate driving circuit, a display apparatus, and a driving method. The reset circuit comprises a first adjustment control circuit having an input terminal configured to receive a ground line signal via a ground input terminal, and a control terminal configured to receive a first control signal; a second adjustment control circuit having an input terminal configured to receive an adjustment signal via an adjustment signal input terminal, a control terminal configured to receive a second control signal, and an output terminal configured to be coupled to an output terminal of the first adjustment control circuit; and a storage circuit having a first terminal connected to the output terminals of the second adjustment control circuit and the output terminal of the first adjustment control circuit, and a second terminal connected between a reset signal input terminal for receiving a reset signal and a transistor of the shift register circuit for receiving a reset input.