Display Driving Circuit Dummy Pin Compatibility
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Solution Overview
Problem
Current display devices face compatibility issues due to pin specification mismatches between driving circuits and display panels, limiting the versatility of driving circuits to work with various display panels having different numbers of clock pins.
Innovation Solution
The driving circuit incorporates multiple driving units with M dummy pins, allowing electrical connection to any display panel with up to M clock pins, enhancing compatibility by including test and feed pins for signal transmission and grounding, and grounding pins for static protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the driving circuit uses a fixed pin configuration, then the circuit design is simple, but the compatibility with display panels having different numbers of clock pins is poor
Solution Approach 1:
The driving circuit is designed with M dummy pins that can serve multiple functions: when connected to clock pins, they enable compatibility with display panels having different numbers of clock pins; when connected to test lines, they enable test signal transmission; when connected to common electrode lines, they enable feed signal transmission. This multi-functional design allows a single driving circuit to work with various display panel configurations without requiring different circuit designs.
Solution Approach 2:
The driving circuit employs switchable pin configurations where each pin can be dynamically assigned to different functions through grounding pins and switching mechanisms. During test phases, pins can be switched between test signal transmission and normal operation modes. This dynamic reconfiguration capability allows the same physical pins to adapt to different operational requirements and display panel types.
2Adaptability or versatility
If the driving circuit includes multiple pin types for different functions, then the compatibility and functionality are improved, but the device complexity increases
Solution Approach 1:
The M dummy pins are designed to universally serve multiple functions including clock signal reception, test signal transmission, and feed signal transmission. Instead of having separate dedicated pins for each function, the same physical pins can be configured for different purposes based on connection requirements, reducing the total number of pins needed while maintaining full functionality.
Solution Approach 2:
The patent combines multiple functional pins into a unified set of M dummy pins that can be selectively activated. The grounding pins serve as shared resources for both test phase operations and normal display operations. By merging these functions into a coordinated system rather than implementing them as separate independent components, the overall pin configuration complexity is managed more efficiently.
3Reliability
If the driving circuit lacks grounding pins, then the device complexity is reduced, but the protection against static electricity damage is insufficient
Solution Approach 1:
Grounding pins are pre-configured in the driving circuit design to establish ground connections before operational issues can arise. These grounding paths are built into the circuit structure in advance, ensuring that static electricity discharge paths are already available when needed, rather than requiring additional protective components to be added later.
Data Source
AI summary
A driving circuit for a display panel, a display panel, and a display device are provided. The driving circuit includes a plurality of driving units, wherein at least one of the driving units includes M dummy pins, at least one of the M dummy pins is configured to be electrically connected to at least one clock pin of the display panel, and M is an integer greater than or equal to 1.