Dual-Side GOA Driving Circuit for Display Panel Yield
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Solution Overview
Problem
The yield of display panels is reduced due to electrostatic discharge or other process factors causing malfunctioning of the Gate on Array (GOA) circuit during the production process, leading to incomplete driving of the display panel.
Innovation Solution
A driving circuit and method for a display panel that includes a scanning-signal-control circuit, first-array-substrate-row driving circuit, and second-array-substrate-row driving circuit, with enabling control signals and scanning signals being output to both lateral sides of the panel, allowing independent control of each side to prevent malfunctions and ensure proper driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single GOA circuit is used for driving the display panel, then the device complexity is reduced and cost is lowered, but the reliability deteriorates due to electrostatic discharge or process factors causing complete panel failure
Solution Approach 1:
The display panel is divided into two independent driving regions: a first region driven by a first GOA circuit from a first lateral side, and a second region driven by a second GOA circuit from a second lateral side. This segmentation allows independent operation of each driving circuit, so that if one circuit fails due to electrostatic discharge or process factors, the other region can still function, thereby improving overall system reliability without requiring a completely redundant dual-sided driving architecture
2Reliability
If electrostatic discharge protection is added to the GOA circuit, then the reliability improves, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
Instead of adding complex ESD protection circuits to a single GOA circuit, the patent segments the driving function into two separate GOA circuits located at different lateral sides of the panel. This segmentation inherently provides protection because failure in one circuit does not affect the other, and the simplified structure of separate GOA circuits is easier to manufacture than a single complex protected circuit
3Adaptability or versatility
If the display panel uses dual-sided driving capability, then the adaptability improves for different display scenarios, but the device complexity increases
Solution Approach 1:
The display panel is segmented into two independently drivable regions with separate GOA circuits at opposite lateral sides. This segmentation enables flexible driving modes: the entire panel can be driven using both sides simultaneously, or only one side can be activated depending on display requirements. The control circuit receives scanning signals from either lateral side and activates the corresponding GOA circuit, providing adaptability without requiring complex switching mechanisms
Solution Approach 2:
The dual-sided GOA circuit architecture provides multi-functionality: it can drive the entire display panel using both lateral sides, or drive only a portion of the panel using a single lateral side. This universal driving capability allows the same hardware structure to adapt to different display scenarios and size requirements without additional complexity
Data Source
AI summary
The present disclosure provides a driving circuit and driving method for a display panel and a display device, an output scanning signal is controlled through a scanning signal control circuit, such that a first-array-substrate-row driving circuit on a first lateral side of the display panel outputs a scanning signal according to a first enabling control signal, and a second-array-substrate-row driving circuit on a second lateral side of the display panel outputs a scanning signal according to a second enabling control signal, and driving of one side or two sides of the display panel is implemented.