Foldable Display Hinge Structure for Faster Crease Recovery
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Solution Overview
Problem
Flexible displays in foldable electronic devices develop creases and reduce flatness during unfolding due to tension in the bending region, affecting user experience.
Innovation Solution
A folding apparatus with a first and second housing, connected by a shaft and elastic components, applies differential forces to the flexible display to accelerate crease recovery and improve flattening, utilizing varying compression amounts and distances to manage tension and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible display is folded repeatedly, then the device becomes portable and compact, but tension accumulates in the bending region causing creases and reducing flatness
Solution Approach 1:
The elastic component applies a preliminary restoring force to the bending region of the flexible display before creases fully form. This continuous counteracting force prevents tension accumulation during folding operations, thereby maintaining flatness while preserving portability benefits
Solution Approach 2:
The invention converts the harmful tension force generated during folding into a beneficial restoring force. The elastic component is pre-compressed during folding, storing energy that automatically pushes back against the bending region, transforming the harmful crease-forming tension into a useful flattening force
2Shape
If elastic force is applied to the bending region, then crease recovery is accelerated and flatness is improved, but device structure becomes more complex
Solution Approach 1:
The elastic component is integrated into the existing housing structure, merging the crease-recovery function with the structural framework. The elastic component fits within the housing cavity and works in conjunction with existing mechanical parts, avoiding the need for separate complex systems while achieving flatness improvement
Solution Approach 2:
The elastic component operates autonomously to restore flatness without requiring external power sources, control systems, or user intervention. It automatically responds to folding-induced tension through its elastic properties, providing a simple self-regulating mechanism that improves flatness without adding system complexity
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 reduces crease formation and enhances the flattening effect of flexible displays, improving user experience by maintaining display flatness and extending the device's service life.
Implementation Method 1
a compression amount of the first elastic component in a first direction generates an elastic force
Data Source
AI summary
The electronic device includes a folding apparatus and a flexible display. The folding apparatus is configured to bear the flexible display. An elastic component of the folding apparatus may transfer an elastic force to the flexible display by using a housing of the folding apparatus. A force that is away from a main shaft and that is applied to the flexible display when the electronic device is in a flattened state is greater than a force that is away from the main shaft and that is applied to the flexible display when the electronic device is in a closed state.