Flexible Display Bending Restriction via Convex Parts
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Solution Overview
Problem
Flexible display devices face limitations in controlling and maintaining their flexibility range, leading to potential function breakdown and damage due to excessive bending, as existing solutions compromise on thinness, weight, and cost by providing unnecessary rigidity to ensure stability.
Innovation Solution
A flexible display device with a restriction part comprising convex parts on support substrates that limit bending quantity, allowing users to control bending within safe limits through external forces, and an optical control part that indicates bending limits via light changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a casing with rigidity is provided to ensure plane stability, then stability is improved, but flexibility is worsened
Solution Approach 1:
The casing is divided into multiple segments: a rigid peripheral portion for stability and a flexible central portion for bending. This segmentation allows different parts of the casing to have different properties, resolving the contradiction between stability and flexibility.
Solution Approach 2:
Different portions of the casing are given different rigidity characteristics. The peripheral part has high rigidity for stability, while the central part has low rigidity for flexibility. This local differentiation resolves the contradiction between overall stability and local flexibility.
2Reliability
If a casing with rigidity is provided to limit flexibility range, then reliability is improved, but device complexity increases
Solution Approach 1:
The casing is segmented into rigid and flexible portions, which simplifies the overall structure compared to a fully rigid casing. This segmentation achieves reliability through flexibility range control while avoiding excessive complexity.
Solution Approach 2:
The flexible portion of the casing is formed as a thin film structure that can bend without compromising the rigid peripheral portion. This approach provides reliability through controlled flexibility while maintaining structural simplicity.
3Stability of the object's composition
If a casing with rigidity is provided, then manufacturing cost increases, but flexibility is worsened
Solution Approach 1:
The casing is divided into rigid and flexible portions, allowing the use of cheaper flexible materials in the central area while maintaining stability through the rigid peripheral portion. This segmentation reduces overall manufacturing cost while preserving necessary stability.
Solution Approach 2:
Different materials or material properties are applied locally: rigid material for the peripheral portion and flexible material for the central portion. This local differentiation optimizes manufacturing cost by using materials only where needed, rather than making the entire casing rigid.
Data Source
AI summary
It is made possible to provide a low-cost highly reliable display device which does not lose the flexibility of itself and which can transmit the allowable range of the flexibility to the user. A display device includes: a display part having a display face and being flexible; and a restriction part having a plurality of first convex parts to restrict a bending quantity of the display part.