Foldable Display Screen Outer Positioning for Curvature Control
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Solution Overview
Problem
Foldable display devices face damage due to a small radius of curvature when folded, as the flexible display screen's folded portion is close to or less than its critical radius of curvature.
Innovation Solution
A foldable display device design featuring a flexible display screen with one end secured to a foldable housing and the other end removable, utilizing elastic members and fixing parts to maintain the screen on the outer side of the housing during folding, preventing excessive curvature and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the flexible display screen is folded with a small radius of curvature, then the device can be compact and portable, but the display screen may be damaged due to excessive curvature
Solution Approach 1:
The patent positions the flexible display screen on the outer side of the foldable housing during folding, changing the spatial dimension of the screen's location. This dimensional change allows the screen to maintain a larger radius of curvature by being located away from the inner folded surface, thus preventing damage while achieving compact folding.
Solution Approach 2:
The patent applies different structural characteristics to different parts of the device. The first end of the display screen is secured to the housing while the second end is removable, allowing localized adjustment. Additionally, the housing includes a cavity that accommodates the screen in the folded state, providing localized protection and maintaining appropriate curvature radius at the critical folding area.
2Stability of the object's composition
If the flexible display screen is secured firmly to the foldable housing, then the screen remains stable during use, but the screen cannot be removed for replacement or maintenance
Solution Approach 1:
The patent creates a dynamic connection system where the first end of the display screen is secured to the housing through a mechanism that allows both stable attachment during use and controlled removal for maintenance. This dynamic design enables the connection state to change between secured and removable based on operational needs.
Solution Approach 2:
The patent divides the display screen into two distinct ends with different connection characteristics: the first end is secured to the housing for stability, while the second end is made removable for ease of replacement. This segmentation allows each end to serve its specific function independently.
3Volume of moving object
If the flexible display screen is positioned on the inner side of the foldable housing during folding, then the device structure is compact, but the radius of curvature becomes too small causing screen damage
Solution Approach 1:
The patent repositions the flexible display screen from the inner side to the outer side of the foldable housing during folding. This dimensional repositioning increases the radius of curvature by placing the screen away from the tightly folded inner surface, thereby maintaining screen strength and preventing damage while still achieving compact device folding.
Solution Approach 2:
The patent introduces a cavity as an intermediary structure between the housing and the display screen. This cavity provides space that allows the screen to be positioned on the outer side of the housing during folding, acting as a mediator that enables both compact folding and adequate curvature radius.
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
Prevents damage to the flexible display screen by maintaining a sufficient radius of curvature during folding, allowing for safe and effective use in both unfolded and folded states.
Implementation Method 1
the first end of the flexible display screen is secured to the foldable housing by an elastic member
Data Source
AI summary
An embodiment of the present invention provides a foldable display device comprising a foldable housing and a flexible display screen, the flexible display screen having a first end and a second end disposed opposite to each other in a first direction, wherein the first end of the flexible display screen is secured to the foldable housing, the second end of the flexible display screen is removable relative to the foldable housing; and when the foldable display device is in a folded state, the flexible display screen is located on a side of the foldable opposite to the folded surface of the foldable housing. The present invention can solve the problem that the radius of curvature of the folded portion of the flexible display screen is too small when the display device is folded, so that the flexible display screen can be prevented from being damaged.