Foldable Display Window Groove Layout for Shock Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible display devices are prone to deformation and damage due to folding or external shocks, particularly affecting their windows.
Innovation Solution
A window design featuring a substrate with groove patterns on both surfaces, allowing for enhanced folding characteristics and mechanical properties, including a folding portion with recessed groove patterns and a non-folding portion, which reduces stress and enhances flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the window is made rigid to protect against external shocks, then mechanical strength is improved, but folding characteristics deteriorate
Solution Approach 1:
The window substrate is divided into a folding portion and a non-folding portion, with the folding portion further segmented into multiple regions with different groove patterns. This segmentation allows different areas to have different mechanical properties - the folding portion can bend while the non-folding portion maintains rigidity for shock resistance.
Solution Approach 2:
Different groove patterns are applied to different regions of the folding portion: a first groove pattern in the center region and a second groove pattern in the outer region. This local quality variation optimizes folding characteristics in the center while maintaining structural integrity in the outer regions during folding operations.
2Adaptability or versatility
If the window is made flexible to enable folding, then folding characteristics are improved, but resistance to external shocks deteriorates
Solution Approach 1:
The window is segmented into folding and non-folding portions, allowing the non-folding portion to provide shock resistance while the folding portion enables flexibility. The non-folding portion acts as a rigid support structure that maintains integrity during impact events.
Solution Approach 2:
The window employs a composite structure combining flexible groove-patterned regions with rigid non-folding portions. This composite design integrates materials or structural configurations that exhibit both flexibility for folding and rigidity for shock resistance in different areas.
3Adaptability or versatility
If groove patterns are added to improve folding characteristics, then folding performance is improved, but device complexity increases
Solution Approach 1:
The folding portion incorporates groove patterns that create a porous or hollow structural configuration. These grooves reduce material usage and weight while maintaining folding flexibility, and can be filled with cushioning materials to enhance shock absorption without significantly increasing overall structural complexity.
Solution Approach 2:
The groove patterns introduce curved and rounded features into the substrate structure, allowing stress distribution during folding operations. The curved groove designs enable smoother folding transitions and reduce stress concentration points, improving folding characteristics without requiring complex mechanical components.
Data Source
AI summary
A window includes a substrate including a folding portion foldable with respect to a folding axis extending in a first direction. A plurality of groove patterns are defined in the folding portion. The folding portion includes a center portion and an outer portion, and the plurality of groove patterns include a first groove pattern disposed in the center portion and a second groove pattern disposed in the outer portion. The first groove pattern includes a first upper groove pattern and a first lower groove pattern, and the second groove pattern includes a second upper groove pattern and a second lower groove pattern. The first upper groove pattern and the first lower groove pattern partially overlap in the second direction, and the second upper groove pattern and the second lower groove pattern do not overlap in the second direction.