Flexible Display Support Layer for Fold Recovery and Touch Sensitivity
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Solution Overview
Problem
Flexible display screens suffer from poor strength and touch sensitivity, and protrusions often appear at folded positions due to poor restorability of film layers when transitioning between folded and unfolded states.
Innovation Solution
A flexible display device with a bendable region, a housing, and a support layer between the housing and the display screen, which is partially or fully attached to the display screen and housing, providing structural support and improving touch sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible display screen is formed by stacking thin film layers, then the display achieves flexibility and bendability, but the structural strength and touch sensitivity deteriorate
Solution Approach 1:
The patent applies composite materials by combining the flexible display screen (made of thin film layers) with a support layer having ductility. This composite structure maintains the flexibility of the thin-film display while adding the strength and restorability of the support layer material, resolving the contradiction between flexibility and structural strength.
2Adaptability or versatility
If the flexible display screen uses thin film layers, then the display achieves bendability, but the touch sensitivity deteriorates due to poor structural support
Solution Approach 1:
The support layer acts as an intermediary between the thin flexible display screen and the housing. It provides the necessary structural support and restorability to maintain touch sensitivity, while allowing the display screen itself to remain thin and bendable. The support layer mediates between the conflicting requirements of thinness for flexibility and strength for touch response.
3Volume of moving object
If the flexible display screen is folded, then the display achieves compactness, but protrusions appear at the folded position due to poor restorability
Solution Approach 1:
The patent changes the physical parameters of the support layer, specifically its ductility and elastic properties, to enable it to withstand repeated folding and unfolding cycles. The support layer is designed with appropriate mechanical properties that allow it to return to its original shape after folding, preventing permanent deformation and protrusions at the folded position while maintaining compactness when folded.
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 support layer enhances the display's structural integrity, prevents protrusions, and improves touch sensitivity by ensuring smooth transitions between folded and unfolded states.
Implementation Method 1
a support layer having ductility between the housing and a back side of the flexible display screen
Data Source
AI summary
A flexible display device includes a flexible display screen having a bendable region; a housing around the flexible display screen; and a support layer having ductility between the housing and a back side of the flexible display screen. The support layer is at least partially on the bendable region of the flexible display screen.