Shift Register Multi-Pulse Output for Display Panels
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Solution Overview
Problem
Existing shift registers can only output a single pulse scan signal, limiting their application in display panels that require multi-pulse scan signals.
Innovation Solution
A shift register design incorporating an output adjustment module, a trigger write module, and a node adjustment module, which allows the shift register to output both clock and power signals based on control node signals, enabling the generation of a multi-pulse signal by controlling the duty cycle of the clock signal and the effective signal of the trigger signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the shift register outputs only a single pulse scan signal, then the circuit structure remains simple, but the adaptability to display panel requirements is limited
Solution Approach 1:
The shift register is designed with an output adjustment module that can switch between different output modes (single pulse or multi-pulse) based on control signals. The circuit can function as either a traditional single-pulse scanner or a multi-pulse generator, making it universally applicable to different display panel requirements without needing separate dedicated circuits
Solution Approach 2:
The shift register incorporates dynamic control mechanisms where the output waveform can be changed in real-time through control signals (first and second control nodes). The duty cycle of clock signals and the effective signals of trigger signals can be adjusted dynamically to generate different pulse patterns, allowing the circuit to adapt its behavior based on operational requirements
2Adaptability or versatility
If the shift register is designed to output multi-pulse scan signals, then the adaptability to display panel requirements is improved, but the device complexity increases
Solution Approach 1:
The shift register is divided into distinct functional modules: a trigger write module for writing trigger signals, an output adjustment module for controlling output waveforms, and a node adjustment module with power introduction and first adjustment sub-modules. This segmentation allows each module to perform its specific function independently, making the complex multi-pulse generation process manageable and maintainable through modular design
Data Source
AI summary
A shift register and a display panel. The shift register includes an output adjustment module, a trigger write module, and a node adjustment module. A first terminal of the output adjustment module inputs a first clock signal. A second terminal of the output adjustment module inputs a first power signal. The output adjustment module is configured to adjust the shift register to output the first clock signal or the first power signal according to the signal on a first control node and the signal on a second control node of the output adjustment module. The trigger write module is configured to write a trigger signal to the second control node according to the clock signal of the control terminal of the trigger write module. The node adjustment module is configured to adjust the signal on the first control node.