AMOLED Shift Register Driving Circuit for Flexible Node Potential Control
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Solution Overview
Problem
The existing AMOLED display devices face challenges in flexibly setting the potential of each node due to the use of the same voltage input terminal in the shift register units, limiting the control over pixel activation.
Innovation Solution
The driving circuit incorporates multiple high and low voltage input terminals, each with distinct voltage values, to independently control the potential of nodes through various transistors and control circuits, allowing flexible node potential adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same voltage input terminal is used in shift register units, then the circuit structure is simple, but the potential of each node cannot be set flexibly
Solution Approach 1:
The patent divides the voltage input into multiple independent terminals (first high voltage input terminal, second high voltage input terminal, etc.) instead of using a single shared terminal. Each terminal can be independently controlled to set different potentials at different nodes, thereby resolving the contradiction between circuit simplicity and node potential control flexibility.
Solution Approach 2:
The patent applies different voltage potentials to different nodes based on their specific functional requirements. By controlling each high voltage input terminal independently, the circuit can provide locally optimized voltage levels at each node, improving adaptability while maintaining reasonable circuit complexity.
2Adaptability or versatility
If multiple high voltage input terminals are used, then node potential control flexibility is improved, but the circuit complexity increases
Solution Approach 1:
The patent designs the shift register units to use multiple high voltage input terminals that can serve different functions. These terminals can be configured to provide different potentials for different operational modes, making the circuit more versatile while the modular design keeps the complexity manageable through reuse of similar circuit blocks.
Data Source
AI summary
A driving circuit, a display panel and a display device are provided. The driving circuit includes a first output circuit and a first pull-up node control circuit; the first output circuit is electrically connected to a pull-up node, a first high voltage input terminal and a driving signal output terminal, and is configured to control to connect the first high voltage input terminal and the driving signal output terminal under the control of a potential of the pull-up node; the first pull-up node control circuit is electrically connected to a pull-down node, a second high voltage input terminal and the pull-up node, and is configured control to connect the pull-up node and the second high voltage input terminal under the control of a potential of the pull-down node; the first high voltage input terminal is different from the second high voltage input terminal.