Skeleton Chain Rotary Surfaces for Flexible Display Bending Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current flexible display devices cannot effectively restrict bending to prevent damage from over-bending, as users often fold them to a curvature radius that is too small, potentially damaging the screen.
Innovation Solution
A support device featuring a skeleton chain with interconnected units, each having a larger cylindrical or spherical rotary surface that engages with a smaller surface of adjacent units, preventing excessive rotation and allowing controlled bending by creating an interference fit, thus restricting the bending extent and preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible display device is allowed to be folded or bent freely, then the device can be shaped according to user requirements, but the curvature radius becomes too small causing damage to the flexible display screen
Solution Approach 1:
The patent changes the geometric parameters of the skeleton units by providing different curvature radii for the first and second rotary surfaces. The first rotary surface has a larger curvature radius while the second rotary surface has a smaller curvature radius, creating a controlled interference fit that limits the minimum bending radius to protect the screen while still allowing shaping capability
Solution Approach 2:
The support device is divided into multiple skeleton units, each comprising head and tail portions with rotary surfaces. This segmentation allows the device to be folded into multiple sections while maintaining controlled curvature at each joint, preventing excessive bending of the flexible display screen
2Volume of moving object
If the flexible display device is completely folded up, then the device can be compactly stored, but the flexible display screen is damaged due to excessive bending
Solution Approach 1:
The patent applies preliminary action by pre-configuring the skeleton units with specific curvature radii and interference fit characteristics before use. This preliminary design ensures that when the device is folded for storage, the bending is automatically limited to safe curvature radii, preventing damage before it can occur
Solution Approach 2:
By changing the geometric parameters of the rotary surfaces with different curvature radii, the patent establishes a mechanical limit on the minimum folding radius. This parameter control allows the device to be compactly stored while maintaining screen integrity through controlled bending
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 device effectively restricts the bending extent of flexible display devices, preventing damage from over-bending while allowing shaping according to user requirements, ensuring the device remains functional and usable.
Implementation Method 1
a radius of the second rotary surface is smaller than a radius of the first rotary surface of the adjacent skeleton unit. The second rotary surface enwraps a portion of the first rotary surface of the adjacent skeleton unit such that the head portion of the adjacent skeleton unit is engaged with the cavity of the tail portion and is rotatable with respect to the cavity of the tail portion
Data Source
AI summary
The present disclosure provides flexible display device and a support device thereof. The support device includes a skeleton chain which includes a plurality of connected skeleton units. Each skeleton unit includes a head portion and a tail portion joined to the head portion. The head portion has a first rotary surface. The first rotary surface is a cylindrical curved surface or a spherical surface. The tail portion includes a cavity which has a second rotary surface. A radius of the first rotary surface is larger than that of the second rotary surface of the adjacent skeleton unit. The second rotary surface enwraps a part of the first rotary surface of the adjacent skeleton unit such that the head portion of the adjacent skeleton unit engages with the cavity of the tail portion and is rotatable with respect to the cavity of the tail portion.