Flexible Display Device with Integrated Layers for Reduced Thickness
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Solution Overview
Problem
Existing flexible display devices face challenges in achieving improved durability, particularly when repeatedly bent or flexed, due to stress and potential delamination of adhesion members.
Innovation Solution
A flexible display device design that includes a protection member, a window member, and a display member sandwiched between them, with adhesion members coupling the display member to both the protection and window members. The display member features a display panel layer, a touch sensing layer, and a reflection prevention layer, all integrated through a continuous process to reduce thickness and enhance flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display member is made thinner to improve flexibility, then the flexibility and bendability are enhanced, but the structural strength and durability deteriorate
Solution Approach 1:
The display member employs a composite structure integrating multiple functional layers including a display panel layer, touch sensing layer, and reflection prevention layer. Each layer is designed with specific material properties that collectively provide both flexibility and structural strength, resolving the contradiction between thinness and durability.
Solution Approach 2:
The display member is divided into multiple functional sub-layers (display panel layer, touch sensing layer, reflection prevention layer) that can be independently optimized. This segmentation allows each layer to contribute specifically to flexibility while collectively providing the necessary structural strength.
2Reliability
If the display member is made thinner to reduce stress during bending, then the risk of delamination is reduced, but the structural integrity and protection capability worsen
Solution Approach 1:
The multi-layer composite structure of the display member provides both the thinness needed to reduce bending stress and delamination risk, while the carefully selected material combinations and inter-layer adhesion designs maintain the necessary structural integrity and protection capability.
Solution Approach 2:
The display member utilizes thin-film technology to create a flexible multi-layer structure that maintains structural integrity despite reduced thickness. The thin-film construction allows the member to flex repeatedly without compromising structural integrity or causing delamination.
3Adaptability or versatility
If multiple layers are integrated through continuous process to reduce thickness, then the flexibility is improved, but the manufacturing complexity increases
Solution Approach 1:
Multiple functional layers (display panel layer, touch sensing layer, reflection prevention layer) are integrated into a single display member through a continuous manufacturing process. This merging approach reduces the overall thickness and improves flexibility while the continuous process design aims to manage manufacturing complexity.
Data Source
AI summary
A flexible display device includes a protection member, a first adhesion member, a display member, a second adhesion member, and a window member. A thickness of the display member is less than a sum of thicknesses of the protection member and the window member. The display member includes a display panel layer, a touch sensing layer, and a reflection prevention layer integrated with each other to reduce a thickness of the flexible display device. The reduction in thickness enables the flexible display device to be bent with a relatively small radius of curvature, as well as to be repeatedly bent (or otherwise flexed) with reduced potential for delamination of the first and second adhesion members.