Display Panel Spare Electrode Layout for Flexible LED Chip Repair
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Solution Overview
Problem
Conventional LED display panel manufacturing processes face challenges in dealing with LED chip failures due to inflexible spare electrode arrangements, which restrict repair flexibility and yield rates.
Innovation Solution
The implementation of a display panel with two types of sub-pixel units, one with a small number of spare electrodes for low repair demand positions and another with a large number of spare electrodes for high repair demand positions, allowing for more effective fault repair and improved yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a uniform arrangement of spare electrodes is used across all sub-pixel units, then the device complexity is reduced, but the adaptability to different failure situations deteriorates
Solution Approach 1:
The patent applies local quality by differentiating the spare electrode configuration across different sub-pixel units based on their specific requirements. First sub-pixel units have n spare electrodes while second sub-pixel units have m spare electrodes (where n≠m), allowing each region to have the appropriate level of redundancy for its failure probability and repair criticality, thus resolving the contradiction between uniform simplicity and localized adaptability
2Ease of repair
If more spare electrodes are provided in all sub-pixel units, then the ease of repair is improved, but the device complexity increases
Solution Approach 1:
The patent implements local quality by providing different numbers of spare electrodes (n or m) to different sub-pixel units based on their specific repair needs. This allows high-priority sub-pixels to have more spare electrodes for easier repair while low-priority sub-pixels have fewer, thus improving overall ease of repair without uniformly increasing device complexity
Solution Approach 2:
The patent segments the display panel into different types of sub-pixel units with different spare electrode configurations. By dividing the uniform structure into heterogeneous segments (first sub-pixel units with n spares, second sub-pixel units with m spares), the system achieves differentiated repair capabilities without requiring all units to have maximum spare electrodes, thereby managing device complexity
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a plurality of sub-pixel units. The sub-pixel units include a first sub-pixel unit and a second sub-pixel unit. The first sub-pixel unit is provided with a main electrode and n spare electrodes, and the second sub-pixel unit is provided with a main electrode and m spare electrodes, where n<m, n and m are integers.