Spacer Design for Flexible Display Impact Mitigation
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Solution Overview
Problem
Flexible display devices face challenges in mitigating impacts applied to light emitting elements, leading to potential film delamination and defects, which affect durability and reliability.
Innovation Solution
The use of spacers with a closed-loop shape surrounding the light emitting elements to absorb and distribute external impacts, preventing them from being transmitted to the elements and thereby reducing the risk of delamination and improving durability and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flexible display devices are configured without additional protective structures, then device complexity is reduced, but impact resistance and reliability deteriorate
Solution Approach 1:
A spacer is introduced as an intermediary component between the light emitting element and the external environment. The spacer absorbs and distributes impact forces, preventing direct transmission to the light emitting element while maintaining overall structural simplicity.
Solution Approach 2:
The spacer is positioned in advance around the light emitting element to provide protective cushioning. This pre-positioned protective structure absorbs impact forces before they can reach the light emitting element, preventing film delamination and improving durability.
2Reliability
If spacers are disposed to surround light emitting elements, then impact mitigation is improved, but manufacturing complexity increases
Solution Approach 1:
The spacer is configured as a thin film structure that can be deposited or formed over the light emitting element. This thin film approach provides comprehensive impact protection while maintaining ease of manufacture through standard thin film deposition techniques.
Solution Approach 2:
The spacer extends in the vertical dimension above the substrate plane, creating a three-dimensional protective structure around the light emitting element. This vertical extension provides impact mitigation without complicating the planar manufacturing process.
Data Source
AI summary
A display device includes a substrate; a bank defining a plurality of emission areas on the substrate; a plurality of light emitting elements at the plurality of emission areas; a plurality of spacers on the bank to surround peripheral portions of the plurality of emission areas, and the plurality of spacers are spaced apart from each other, so that film delamination of a light emitting element can be prevented by minimizing transmission of an impact to the light emitting element.