Link Hinge Dynamic Length Adjustment for Flexible Display Stress
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Solution Overview
Problem
Portable information handling systems with flexible displays face stress issues due to bending, which can affect the structural integrity and durability of the displays as they are adjusted between different positions.
Innovation Solution
A link hinge assembly with dynamic length adjustment is used, comprising coupled links and locking elements that move relative to each other to control the bending of the hinge assembly, thereby reducing stress on the flexible display. This assembly includes coils to vary resistance and maintain the housing portions in specific positions, ensuring minimal bend radius and protecting the display from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the hinge assembly uses a fixed rigid structure, then the housing portions can be firmly coupled, but the flexible display will experience high stress during bending
Solution Approach 1:
The hinge assembly is divided into multiple individual links (first link, second link, third link, fourth link) that are coupled together. This segmentation allows each link to move independently, distributing the stress across multiple components rather than concentrating it in a single rigid structure, thereby reducing the stress transmitted to the flexible display while maintaining overall structural integrity.
Solution Approach 2:
The hinge assembly transitions from a fixed rigid structure to a dynamic structure where links can move relative to each other. The locking elements (first locking element, second locking element) enable the links to lock at specific positions while allowing movement between positions, creating a dynamically adjustable structure that adapts to different configurations and reduces stress on the display during transitions.
2Object-affected harmful factors
If the hinge assembly allows free movement between links, then stress on the display is reduced, but the housing portions cannot be held firmly in specific positions
Solution Approach 1:
The hinge assembly incorporates locking elements that enable dynamic positioning - the links can move freely when unlocked to reduce stress during transitions, and can be locked firmly at desired positions to maintain stability. This dynamic capability allows the system to switch between flexible movement and rigid positioning as needed.
Solution Approach 2:
The locking elements are designed to work automatically with the movement of the links. As the links move relative to each other during hinge assembly bending, the locking elements engage and disengage based on the position and movement, providing self-service locking functionality without requiring external control mechanisms, thereby maintaining position stability while allowing controlled movement.
3Device complexity
If the hinge assembly uses a simple fixed structure, then the device complexity is low, but it cannot provide dynamic length adjustment for stress management
Solution Approach 1:
The hinge assembly is segmented into multiple links that can move independently, providing dynamic length adjustment capability. This segmentation allows the overall length of the hinge assembly to vary as links move relative to each other, enabling stress management through controlled length changes while maintaining a relatively simple modular structure that doesn't require complex mechanisms.
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 link hinge assembly effectively manages stress on the flexible display, maintaining its structural integrity and durability while allowing for various positional adjustments of the portable information handling system.
Implementation Method 1
The hinge assembly may include coils that vary resistance to movement of the links
Data Source
AI summary
Systems and methods are disclosed for rotationally coupling housing portions of an information handling system. An information handling system includes a housing having a first housing portion and a second housing portion. The information handling system also includes a hinge assembly coupling the first and second housing portions, the hinge assembly comprising a plurality of coupled links, the links coupled such that the links move in relation to one another to cause the hinge assembly to bend when the first housing portion is rotated in relation to the second housing portion. In addition, the information handling system includes a flexible display coupled to the first housing portion and the second housing portion, the flexible display covering the hinge assembly, the flexible display configured to bend when the hinge assembly bends.