Porous Protection Layer for Foldable Display Durability
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Solution Overview
Problem
Current foldable display devices face challenges in achieving both mechanical durability and improved folding characteristics, as existing materials often compromise on either strength or flexibility, leading to potential damage from external impacts and reduced usability.
Innovation Solution
A display device is designed with a protection layer comprising a base layer having a porous structure impregnated with a polymer resin, such as nafion or aciplex, which is applied to the display panel and window, providing a thickness range of 10 μm to 150 μm and light transmittance of 90% or more, enhancing mechanical durability and folding reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a protection layer with high strength material is used, then mechanical durability is improved, but folding characteristics deteriorate
Solution Approach 1:
The protection layer employs a porous base layer structure that provides mechanical strength through the three-dimensional network of pores and struts, while the porosity allows the material to be more compliant and adaptable to folding deformations, thus resolving the contradiction between strength and folding characteristics
Solution Approach 2:
The protection layer is constructed as a composite material system combining a porous base layer with impregnated polymer resin, where the base layer provides structural framework and the polymer resin fills the pores to enhance mechanical properties while maintaining flexibility for folding applications
2Strength
If a thicker protection layer is used, then mechanical durability is improved, but light transmittance deteriorates
Solution Approach 1:
The porous structure of the base layer allows light to pass through the void spaces, enabling the protection layer to achieve adequate thickness for mechanical durability while maintaining high light transmittance performance
Solution Approach 2:
The polymer resin is selectively impregnated into the pores of the base layer, providing localized reinforcement in regions where mechanical strength is needed, while the overall porous architecture preserves optical transparency
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 significantly improves the mechanical durability and folding reliability of the display device, allowing it to withstand external impacts without compromising on flexibility, thus maintaining optimal performance and user experience.
Implementation Method 1
a base layer having a porous structure; and a polymer resin impregnated into the base layer
Data Source
AI summary
A display device includes a display panel and a protection layer disposed on the display panel. The protection layer includes a base layer having a porous structure and a polymer resin that is impregnated into the base layer. The porous structure of the base layer includes a plurality of pores.