Display Panel Dam Structure for Cutting Adhesion
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Solution Overview
Problem
Conventional display panels face defects and reduced adhesion between substrates during the cutting process of mother panels, leading to yield and productivity issues.
Innovation Solution
Incorporating a dam made of non-conductive material between the substrates along the edges, with a sealing member and spacers to maintain uniform adhesion and prevent defects during cutting, using a cutting wheel-scriber or laser to cut the dam for efficient panel division.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a mother panel is cut into multiple cells, then productivity and yield are improved, but adhesion between substrates deteriorates and defects occur
Solution Approach 1:
A dam structure is formed along the cutting lines before the cutting process. This dam prevents adhesion deterioration and defects during subsequent cutting by providing a protective barrier that maintains substrate integrity throughout the cutting process
Solution Approach 2:
The dam structure acts as a cushioning element positioned beforehand at the cutting boundaries. It prevents the harmful effects of cutting (adhesion loss, substrate separation) by providing structural support and maintaining the bonding between substrates during the cutting operation
2Ease of manufacture
If conventional cutting methods are used, then manufacturing simplicity is maintained, but defects occur and yield decreases
Solution Approach 1:
The dam structure is formed in advance using standard photolithography and coating processes, integrating seamlessly into existing manufacturing workflows. This preliminary structure enables defect-free cutting without requiring complex additional equipment or process changes
Data Source
AI summary
A display panel includes a first substrate, a second substrate facing the first substrate, a dam disposed between the first substrate and the second substrate along edges of the first and second substrates, the first substrate, second substrate, and dam having a same outermost incision surface, and a sealing member disposed between the first and second substrates, the sealing member being between an interior of the display panel and the dam.