Ultra-Thin Glass Edge Buffer Structure for Foldable Displays
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Solution Overview
Problem
Foldable products with reinforced ultra-thin glass surfaces are susceptible to edge impacts, leading to cracks and breakage due to the inherent characteristics of the glass.
Innovation Solution
A display device design featuring a glass layer made of reinforced ultra-thin glass with indented peripheral edges and a buffer layer between adhesive layers to prevent adhesion and enhance impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforced ultra-thin glass is used for the display surface, then the display device achieves thinness and strength, but the edges become susceptible to impacts causing cracks and breakage
Solution Approach 1:
A buffer layer is pre-installed at the edges of the glass layer to provide cushioning protection before impact occurs. The buffer layer absorbs impact energy and reduces stress concentration at the vulnerable glass edges, preventing cracks and breakage while maintaining the thin and strong characteristics of the reinforced ultra-thin glass display surface.
Solution Approach 2:
The buffer layer acts as an intermediary element between the glass layer and the adhesive layers. It mediates the stress distribution at the glass edges, reducing the direct transmission of impact forces to the glass layer while maintaining the structural integrity of the overall display device assembly.
2Object-affected harmful factors
If the glass layer edges are indented to form an indented region, then the buffer layer can be disposed to protect edges, but the manufacturing precision requirement increases
Solution Approach 1:
The glass layer is segmented from the adhesive layers by creating an indented region at the edges. This segmentation allows the buffer layer to be independently positioned and installed in the indented region, separating the protective function from the bonding function and reducing the overall manufacturing precision requirements.
Solution Approach 2:
The indented region is pre-formed on the glass layer before final assembly with the adhesive layers. This preliminary action creates a dedicated space for the buffer layer, allowing for easier and more precise installation of the protective element without requiring high-precision alignment during the final assembly process.
Data Source
AI summary
A display device is provided. The display device includes a cover plate, a first adhesive layer, a glass layer, a second adhesive layer, and a buffer layer. The first adhesive layer, the glass layer, and the second adhesive layer are sequentially disposed on a side of the cover plate. The glass layer is made of reinforced ultra-thin glass. Peripheral edges of the glass layer are indented with respect to peripheral edges of the first adhesive layer and the second adhesive layer to form an indented region. The buffer layer is disposed in the indented region.