Display Device Driving Circuit Test Switches for GOA Line Detection
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Solution Overview
Problem
Current display panel manufacturing processes face challenges in detecting issues with gate-on-array (GOA) driving circuits, particularly when unilateral GOA lines are broken, leading to missed detections and reduced durability due to the inability to reflect problems in time, especially with bilateral driving methods.
Innovation Solution
A display device and method incorporating a panel with a bending area, bonding area, battery testing board, and test switches to connect and test driving circuit wires, preventing missed detections and improving durability by ensuring thorough testing of both sides of the driving circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If bilateral driving method is used to increase PPI and brightness uniformity, then display quality is improved, but detection capability of unilateral GOA line breaks is reduced leading to missed detections
Solution Approach 1:
The invention divides the detection function into separate test switches for each side of the GOA circuit. Instead of relying on the integrated bilateral driving system to detect issues, the patent segments the detection capability by adding independent test switches (first test switch and second test switch) that can independently test connection wires on each side, ensuring that unilateral line breaks are not masked by the other side's operation.
2Device complexity
If traditional testing method is used to reduce device complexity, then manufacturing cost is reduced, but detection precision of driving circuit issues is reduced leading to missed detections
Solution Approach 1:
The invention introduces test switches as intermediary components between the GOA connection wires and the display pixels. These test switches act as mediators that can isolate and individually test each connection wire without requiring complex external testing equipment. The test switches enable precise detection by serving as controllable intermediaries that can redirect signals to test specific wires while keeping the rest of the system operational.
3Reliability
If comprehensive testing of both sides is implemented to prevent missed detections, then durability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The test switches are designed with multi-functionality, serving both as normal driving circuit components during operation and as detection components during testing. The same test switches that control pixel activation during normal display operation can be repurposed to test connection wires by redirecting signals, eliminating the need for separate dedicated testing hardware and reducing overall device complexity while maintaining comprehensive detection capability.
Data Source
AI summary
The present disclosure provides a display device and a method of detecting a driving circuit. The display device of the present disclosure is provided with test switches on both first connection wires and second connection wires, so that wiring on both sides of the driving circuit can be tested, thereby preventing the driving circuit of the display device from missed detections and improving durability of the display device.