Display Substrate Edge Groove Structure to Block Crack Propagation
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Solution Overview
Problem
Thin display apparatuses are prone to damage and crack propagation due to external forces or manufacturing processes, particularly during the cutting of mother substrates, affecting their durability.
Innovation Solution
Incorporating insulation patterns with adjacent grooves and insulating layers in the peripheral area of the substrate, which are formed by removing material from the insulation pattern, to prevent crack propagation and enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the mother substrate is cut to separate display apparatuses, then productivity is improved, but cracks may occur in the films affecting durability
Solution Approach 1:
The patent applies preliminary action by forming protective insulation patterns and grooves on the mother substrate before the cutting process. The insulation patterns are deposited and patterned in advance, creating a protective layer that prevents cracks from propagating into the display apparatus films during subsequent cutting operations. This pre-established protection structure ensures that the high-speed cutting process does not compromise the durability of the final product.
2Adaptability or versatility
If thin films are used to reduce thickness and weight, then adaptability is improved, but the films become prone to damage and crack propagation
Solution Approach 1:
The patent applies local quality by creating insulation patterns with specific local properties at critical locations on the substrate. The insulation patterns are formed with different characteristics in different regions - particularly at edges and corners where cracks are most likely to initiate and propagate. This localized enhancement of protective properties allows the thin films to maintain their flexibility and adaptability while being protected from damage at vulnerable locations.
Solution Approach 2:
The patent uses insulation patterns as an intermediary structure between the substrate and the thin display films. These insulation patterns act as a mediator that absorbs and distributes mechanical stresses, preventing direct stress concentration on the thin films. The intermediary insulation layer with its groove structure serves as a buffer that protects the fragile thin films from damage while allowing the overall apparatus to maintain its thin and flexible characteristics.
Data Source
AI summary
A display apparatus includes a substrate on which a central area and a peripheral area adjacent to the central area are arranged. The central area includes a display area. The display apparatus further includes: at least one insulation pattern that is formed in the peripheral area; a groove from which a material for forming the insulation pattern is removed and that is formed adjacent to the insulation pattern; and at least one insulating layer that is interposed between the insulation pattern and the substrate. The groove is located in the at least one insulating layer.