Stretchable Display Island Structure for High-Strain Strength
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Solution Overview
Problem
Current stretchable display devices face challenges in achieving a high stretching rate while maintaining strength to prevent breaking and distortion.
Innovation Solution
A stretchable display module is designed with a display layer composed of multiple display islands connected by a connecting wire, bonded by a transparent adhesive layer, and supported by stretchable layers, allowing for high flexibility and strength through modular island structures and adhesive bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the display layer is made as a continuous structure, then the strength is improved, but the stretching rate is limited
Solution Approach 1:
The display layer is divided into multiple independent display islands spaced apart from each other, connected by connecting wires. This segmentation allows the spaces between islands to expand during stretching while maintaining structural strength through the connecting wires, resolving the contradiction between strength and stretching rate.
2Adaptability or versatility
If the display layer is partitioned into independent islands, then the stretching rate is improved, but the strength may be reduced
Solution Approach 1:
Transparent adhesive layers are introduced as intermediary materials to bond the display islands and connecting wires into an integrated structure. The adhesive layer distributes mechanical stress across the entire display module, preventing the segmented structure from weakening during stretching, thus maintaining both high stretching rate and strength.
3Strength
If adhesive layers are added to bond display islands, then the strength is improved, but the device complexity increases
Solution Approach 1:
Multiple adhesive layers (first adhesive layer, second adhesive layer, and filling adhesive layer) are merged into a unified transparent adhesive system that performs multiple functions: bonding display islands, filling spacing regions, and providing mechanical support. This integration strengthens the structure while minimizing the increase in device complexity through functional consolidation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The module achieves a high stretching rate with enhanced strength, reducing distortion and improving reliability by partitioning the display layer into independent islands and bonding them with a transparent adhesive, thereby inhibiting panel distortion during stretching.
Implementation Method 1
a transparent adhesive layer including a filling adhesive layer filled in a spacing region between the display islands, a first adhesive layer disposed on a surface of the display layer opposite an emitting direction of the display layer, and a second adhesive layer disposed on a surface of the display layer in the emitting direction, wherein the display islands are bonded as a whole by the transparent adhesive layer
Data Source
AI summary
A stretchable display module and a manufacturing method thereof are provided. The stretchable display module includes a display layer including a plurality of display islands arranged and spaced apart from each other, wherein two of the adjacent display islands are electrically connected by a connecting wire; a transparent adhesive layer including a filling adhesive layer filled in a spacing region between the display islands, a first adhesive layer disposed on a surface of the display layer opposite an emitting direction of the display layer, and a second adhesive layer disposed on a surface of the display layer in the emitting direction.