Variable-Thickness Cover Glass for Foldable Display Impact Resistance
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Solution Overview
Problem
Flexible display apparatuses face challenges in maintaining impact resistance while providing a flexible function, as thin protective layers become vulnerable to external impacts.
Innovation Solution
A display apparatus design featuring a cover glass with varying thickness across different areas, thicker in non-folding regions for enhanced impact resistance and thinner in folding regions to allow flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the protective layer is made thin to realize a flexible function, then the flexibility of the display apparatus is improved, but the impact resistance of the protective layer deteriorates
Solution Approach 1:
The cover glass is designed with different thicknesses in different regions: a first thickness in the folding area to enable flexibility, and a second thickness (greater than the first) in the non-folding area to provide impact resistance. This local variation in thickness allows each region to have the specific property needed for its function.
Solution Approach 2:
The cover glass is segmented into multiple regions with different thickness characteristics - a folding area with thinner glass and non-folding areas with thicker glass. This segmentation allows the single cover glass to simultaneously provide both flexibility and protection without requiring separate components.
2Weight of moving object
If the protective layer is made thin to reduce weight and achieve flexibility, then the light weight and flexible function are improved, but the vulnerability to external impact increases
Solution Approach 1:
The cover glass implements local quality by having different thicknesses in different regions - thinner in the folding area for flexibility and lighter overall weight, and thicker in the non-folding area for enhanced protection and reliability. This resolves the contradiction between weight reduction and protection function.
Data Source
AI summary
Embodiments of the present disclosure relate to a display apparatus. The display apparatus includes a cover glass located on a display panel, and covering an area overlapping a non-folding area of a first side surface of the display panel, wherein the thickness of a part of the cover glass which covers the first side surface of the display panel and is disposed in an area overlapping the non-folding area is larger than the thickness of a part of the cover glass which is disposed in an area overlapping a folding area. It is possible to provide a display apparatus with improved impact resistance while realizing a folding function.