Protective Structure Anti-Scratch Layer Buffer Design
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Solution Overview
Problem
Electronic devices, particularly flexible ones, are prone to damage from scratches and impacts due to their reduced mechanical strength and hardness, which affects their reliability during manufacturing, delivery, and usage.
Innovation Solution
A protective structure comprising an impact-resistant structure with buffer and filling structures, and an anti-scratch structure with a hard coat layer and a surface anti-scratch layer, is applied to the electronic devices to enhance their durability. The impact-resistant structure includes buffer structures and filling structures, while the anti-scratch structure features a hard coat layer covered by a surface anti-scratch layer with a higher Young's modulus, providing enhanced protection against external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If electronic devices are made lighter and thinner, then portability and compactness are improved, but mechanical strength and hardness deteriorate, making them more susceptible to damage from scratches and impacts
Solution Approach 1:
The patent applies composite materials by combining multiple protective layers with different properties: a hard coat layer for scratch resistance, a surface anti-scratch layer for enhanced durability, and buffer structures for impact absorption. This multi-layer composite structure provides comprehensive protection while maintaining the device's lightweight and thin profile.
Solution Approach 2:
The protective structure is segmented into distinct functional layers: the hard coat layer, surface anti-scratch layer, and buffer structures. Each layer performs a specific protective function, allowing the system to provide comprehensive protection without requiring a single thick protective layer, thus maintaining device thinness while improving mechanical strength.
2Reliability
If protective layers are added to enhance durability, then resistance to scratches and impacts is improved, but device complexity increases
Solution Approach 1:
The protective structure is designed with multi-functionality where the same layered structure provides multiple protective functions simultaneously: scratch resistance, impact absorption, and surface protection. This universal design approach enhances reliability without requiring separate protective systems for different types of damage, thereby controlling complexity.
3Strength
If buffer structures are added to absorb impact, then impact resistance is improved, but the structural complexity and manufacturing difficulty increase
Solution Approach 1:
The buffer structures are implemented as thin film layers integrated into the protective structure, providing impact absorption through controlled deformation of the flexible protective layers. This approach maintains ease of manufacture by using thin-film deposition techniques while achieving effective impact resistance.
Solution Approach 2:
The buffer structures are pre-configured in the protective layer design to absorb impact forces before they reach the device. This beforehand cushioning approach is integrated into the manufacturing process, where the protective layers are applied in a controlled sequence, simplifying the overall manufacturing process while ensuring impact protection.
Data Source
AI summary
A protective structure includes an impact resistant structure and an anti-scratch structure. The impact resistant structure includes a plurality of buffer structures and a plurality of filling structures located around the buffer structures. The anti-scratch structure is located over the impact resistant structure. The anti-scratch structure includes a hard coat layer which covers the impact resistant structure, and a surface anti-scratch layer which covers the hard coat layer.