Foldable Display Protective Layer Single Film Structure
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Solution Overview
Problem
Foldable display devices face challenges in protecting their windows from impact and fingerprint smudges while maintaining flexibility and optical clarity.
Innovation Solution
A display device design featuring a protective layer with a single film structure, including an impact resistance layer and anti-fingerprint material within the hard coating, positioned between the window and the display panel, where the window and protective layer are foldable and unfoldable together, with the protective layer extending further than the window to shield the window from external shocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a protective layer with single film structure is used, then device complexity is reduced, but impact resistance and anti-fingerprint properties may be compromised
Solution Approach 1:
The patent combines the impact resistance layer and anti-fingerprint layer into a single integrated surface coating layer. This merging of functions into one film structure reduces the overall layer count and device complexity while maintaining both impact resistance and anti-fingerprint properties through the combined material composition.
Solution Approach 2:
The surface coating layer uses composite materials that integrate both impact resistance functionality and anti-fingerprint properties within a single layer. This composite approach allows one material system to deliver multiple protective functions, reducing the need for separate layers while maintaining reliability.
2Strength
If the protective layer extends further than the window, then impact resistance is improved, but manufacturing precision requirements increase
Solution Approach 1:
The protective layer is designed to extend beyond the window boundaries in advance, creating an overlapping structure that proactively shields the window edges from impact. This preliminary extension ensures that even with manufacturing variations, the window remains protected as the protective layer's extended coverage compensates for potential misalignment.
3Strength
If multiple layers are used in the protective layer, then impact resistance is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple protective functions (impact resistance and anti-fingerprint protection) into a single surface coating layer, reducing the total number of layers while maintaining comprehensive protection. This consolidation approach lowers device complexity without sacrificing impact resistance performance.
Solution Approach 2:
The single surface coating layer employs composite materials that deliver both impact resistance and anti-fingerprint properties simultaneously, eliminating the need for separate functional layers and thereby reducing overall structural complexity while maintaining strength.
Data Source
AI summary
A display device includes a protective layer facing a display panel with a window therebetween, and the protective layer includes in order from the window: a base layer; and a surface coating layer having a single film structure. The surface coating layer includes an impact resistance layer and an anti-fingerprint material within the impact resistance layer.