GOA Driving Circuit Dynamic Switching for Shift Register Damage
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Solution Overview
Problem
The existing gate driver on array driver (GOA) architecture for display panels faces challenges in reducing border width and managing instability in shift registers, leading to costly and laborious repair processes, especially for large-size panels where unilateral driving can result in insufficient charging time.
Innovation Solution
A driving circuit with a potential enhancing module, switch module, current detecting module, and control module that divides clock signals into two groups, detects current output, and dynamically switches between them to ensure bilateral or unilateral driving based on shift register status, improving compatibility and reducing design costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If three driver boards are developed to handle different damage scenarios, then reliability is improved, but device complexity and design costs increase
Solution Approach 1:
The driver board is designed with universal functionality to handle both left and right shift registers through a single unified architecture. The switch module and current detecting module enable the same driver board to adaptively respond to different damage scenarios (left shift register damage, right shift register damage, or both damaged) without requiring separate specialized boards for each case.
Solution Approach 2:
The driver board incorporates dynamic switching capability through the switch module, which can reallocate clock signal groups based on real-time detection of shift register status. When damage is detected via the current detecting module, the system dynamically reconfigures signal routing to maintain operation, providing adaptive reliability without increasing hardware complexity.
2Device complexity
If unilateral driving is used for large-size panels, then device complexity is reduced, but charging time becomes insufficient
Solution Approach 1:
The system dynamically adjusts the driving mode based on panel size and shift register status. For large-size panels, the driver board can activate both left and right shift registers simultaneously (bilateral driving) to provide sufficient charging current, while for smaller panels it can use unilateral driving to reduce complexity. This dynamic adaptation resolves the contradiction between charging time requirements and device complexity.
3Manufacturing precision
If manual inspection and repair processes are used for damaged shift registers, then manufacturing precision is maintained, but productivity decreases
Solution Approach 1:
The current detecting module continuously monitors the current consumption of each shift register and provides real-time feedback to the control module. When abnormal current patterns indicate damage, the system automatically detects and reports the issue, eliminating the need for manual inspection and enabling rapid response that maintains precision while significantly improving productivity.
Solution Approach 2:
The driver board performs self-diagnosis through the current detecting module, automatically identifying damaged shift registers without external intervention. The system can even attempt self-recovery by switching to alternative driving configurations, reducing the need for manual repair processes while maintaining accurate damage detection.
Data Source
AI summary
Disclosed are a driving circuit, a level shifter IC and a display device. The driving circuit includes a level enhancing module, a switch module, a current detecting module and a control module, the control module correspondingly switches on the switch module or switches off the switch module according to current signal output by the current detecting module.