Micro LED Display Panel Anode Segmentation for Individual Pixel Repair
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Solution Overview
Problem
The existing micro light emitting diode (pLED) display panel repair process is complex and inefficient, resulting in a low success rate and resource wastage due to the need to disconnect the entire anode when repairing a defective micro light emitting diode, which affects the entire pixel and reduces display quality.
Innovation Solution
The micro light emitting diode display panel is designed with an anode divided into multiple electrode plates connected through lines, allowing for individual repair of defective micro light emitting diodes by cutting specific connection lines, ensuring other diodes can continue to emit light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the anode is designed as a single integrated structure, then the manufacturing process is simple, but when one micro light emitting diode needs repair, the entire pixel becomes a dark spot resulting in resource wastage and reduced display quality
Solution Approach 1:
The anode is divided into multiple independent electrode plates corresponding to different micro LED regions. Each electrode plate can be independently controlled and disconnected, allowing individual micro LEDs to be repaired without affecting the entire pixel. The electrode plates are electrically connected through connection lines that can be selectively cut during repair operations.
2Ease of repair
If the anode is divided into multiple electrode plates for individual repair capability, then repair success rate improves, but the device structure becomes more complex
Solution Approach 1:
The anode is segmented into multiple electrode plates with connection lines providing electrical interconnection. This segmentation enables selective disconnection of defective regions while maintaining structural organization through systematic electrical connections, balancing repair capability with manageable complexity.
Solution Approach 2:
The connection lines serve multiple functions: they electrically connect adjacent electrode plates during normal operation and can be selectively cut to isolate defective micro LEDs during repair. This multi-functionality reduces the need for additional specialized components, thereby limiting the increase in device complexity.
3Ease of repair
If connection lines are added to connect electrode plates, then individual repair becomes possible, but the manufacturing process becomes more complex
Solution Approach 1:
The anode manufacturing process is segmented into forming multiple electrode plates and adding connection lines. This approach allows standard thin-film deposition techniques to be used for both the electrode plates and connection lines, maintaining manufacturing simplicity while enabling post-manufacturing repair capabilities.
Data Source
AI summary
The present invention provides a micro light emitting diode display panel and a repair method thereof. The anode of the micro light emitting diode display panel is divided into a plurality of electrode plates which are spaced with one another. The respective electrode plates are electrically connected and integrated through the connection lines. Each electrode plate is correspondingly arranged with one micro light emitting diode. When one of the micro light emitting diodes is defective, the connection line electrically connected to electrode plate of the micro light emitting diode is cut to individually repair the defective micro light emitting diode to be a dark spot, and other micro light emitting diodes can normally emit light. The present invention can simplify a repair process of the micro light emitting diode display panel to promote the success rate of the repair of the micro light emitting diode display panel.