Flexible Display Wavy Line Stress Distribution
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Solution Overview
Problem
Flexible organic light emitting diode displays face damage to wires and insulating layers due to stress when bent, which affects their durability and functionality.
Innovation Solution
A display device design featuring a flexible substrate with a bending area that includes a wavy line and opening patterns in the insulating layer, along with protective films, to distribute stress and minimize damage during bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible substrate is bent to achieve flexibility, then the adaptability and portability are improved, but the wires and insulating layers are damaged by stress
Solution Approach 1:
The wire pattern is designed with a wavy line configuration instead of a straight line, allowing the wire to follow a curved path that accommodates the bending of the flexible substrate. This curvature design distributes the stress along the wavy path, preventing concentration of stress at specific points and reducing damage to the wire and insulating layers during bending operations.
Data Source
AI summary
A display device includes: a flexible substrate including a bending area bent in one direction; an insulating layer on the flexible substrate and comprising a plurality of opening patterns spaced apart from each other at the bending area; and a wavy line extending through the plurality of opening patterns.