Mesh Capacitor Electrodes for OLED Defect Repair
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Solution Overview
Problem
Conventional OLED displays require replacement of entire capacitor electrodes when defects occur, leading to inefficiencies and waste, as the entire electrode must be replaced rather than just the defective portion.
Innovation Solution
The display device incorporates a capacitor with a mesh-shaped first and second capacitor electrode, allowing only the defective portions of these electrodes to be repaired or removed, maintaining functionality without replacing the entire electrode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire capacitor electrode is replaced when a defect occurs, then the reliability of the capacitor is restored, but the loss of material and time increases significantly
Solution Approach 1:
The capacitor electrode is divided into multiple segments separated by insulating spaces. When a defect occurs in one segment, only that specific segment needs to be replaced rather than the entire electrode, reducing material waste and repair time while restoring capacitor functionality.
Solution Approach 2:
The electrode structure transitions from uniform to non-uniform by introducing insulating spaces that create distinct segments. This local differentiation allows targeted repair of defective portions while preserving functional segments, addressing the contradiction between reliability restoration and material conservation.
2Reliability
If the entire capacitor electrode is replaced when a defect occurs, then the capacitor reliability is restored, but the repair time and productivity are reduced
Solution Approach 1:
By segmenting the electrode into separable units with insulating spaces, the repair process can focus on only the defective segment, significantly reducing repair time and improving productivity while maintaining capacitor reliability.
Solution Approach 2:
The defective segment can be extracted and removed independently from the functional segments, allowing rapid replacement of only the problematic portion rather than the entire electrode, thereby enhancing repair efficiency.
3Reliability
If the entire capacitor electrode is replaced when a defect occurs, then the capacitor reliability is restored, but the waste and environmental impact increase
Solution Approach 1:
Segmenting the electrode enables precise identification and removal of only the defective segment, minimizing waste generation and reducing environmental impact while restoring capacitor functionality.
Solution Approach 2:
The insulating spaces and modular segmentation allow functional segments to be recovered and retained while discarding only the defective portions, reducing overall waste and supporting sustainable manufacturing practices.
Data Source
AI summary
The display device includes a substrate and a capacitor positioned on the substrate, the capacitor including a first capacitor electrode having a mesh shape and a second capacitor electrode having a mesh shape and positioned on the first capacitor electrode with an insulation layer therebetween.