Foldable Display Panel Elastic Structure for Bend Reliability
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Solution Overview
Problem
Existing display panels face challenges in flexibility and durability, particularly in regions where functional layers exceed half the thickness, leading to issues with bending, irreversible folds, and protection against environmental factors.
Innovation Solution
The display panel incorporates a first region with a first component comprising a first and second elastic body, where the second elastic body has a higher modulus than the first, allowing controlled bending with larger curvature radii and reduced thickness, and includes a sealant to inhibit impurity diffusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a functional layer with thickness greater than or equal to half the total thickness is positioned in the lower region, then the display panel achieves better mechanical strength and structural stability, but the flexibility and bendability are reduced
Solution Approach 1:
The functional layer is divided into multiple sub-layers with different thicknesses and material properties. The lower functional sub-layer has greater thickness for strength, while the upper functional sub-layer has smaller thickness for flexibility. This segmentation allows each sub-layer to optimize its contribution to either strength or flexibility based on its position and material characteristics.
Solution Approach 2:
Different regions of the functional layer are assigned different thicknesses and material compositions. The lower region uses thicker material for structural support, while the upper region uses thinner material for flexibility. This local differentiation resolves the contradiction by allowing each region to have optimized properties for its specific function.
2Ease of operation
If the display panel is made thinner to improve flexibility, then the bendability is improved, but the protection against environmental factors and structural stability are reduced
Solution Approach 1:
The display panel uses composite material structures where multiple materials with different properties are combined. Flexible materials provide bendability while protective materials provide environmental resistance. The composite structure allows the panel to achieve both thinness for flexibility and sufficient protection for reliability.
Solution Approach 2:
Protective layers are pre-applied to the display panel surface before final assembly. These preliminary protective measures ensure that when the panel is made thin for flexibility, it still maintains adequate protection against environmental factors during manufacturing and usage.
3Ease of manufacture
If the panel structure is simplified to reduce complexity, then the manufacturing is easier, but the ability to prevent irreversible folds and maintain durability is reduced
Solution Approach 1:
The patent extracts and separates the flexibility-enhancing functional layer from the rigid support structure. By taking out the functional layer as a distinct component with optimized thickness and material properties, the design achieves both ease of manufacturing and resistance to irreversible folds through proper component separation and integration.
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 solution enables a display panel that is highly flexible, resistant to irreversible folds, and protects against environmental factors, ensuring reliable and convenient operation.
Implementation Method 1
The first component 791 includes a first elastic body 791A and a second elastic body 791C
Data Source
AI summary
A novel display panel that is highly convenient or reliable is provided. The display panel includes a first region and a second region. The second region is provided with a first component, and the second region can be bent with the first component facing outward. The first component includes a first elastic body and a second elastic body. The second elastic body includes an end portion part or the whole of which is covered with the first elastic body. The second elastic body has a higher elastic modulus than the first elastic body.