Foldable Display Panel Support with Multi-Joint Arc Mechanism
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Solution Overview
Problem
Foldable display devices face stress issues when folded, which can lead to reduced lifespan and durability due to the deformation of materials like inorganic materials in flexible display panels.
Innovation Solution
A display device design featuring a panel support portion with multi-joint members and a sliding member that distributes stress by arranging joint portions in a circular arc shape, minimizing tension on the bendable area, and using protrusions and support plates to manage the folding mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the flexible display panel is folded, then the device becomes portable and compact, but stress and deformation occur on the panel materials
Solution Approach 1:
The joint portions are arranged in a circular arc shape rather than a straight line, creating a curved folding path that better distributes stress across the flexible display panel. This curvature design reduces concentration of deformation at specific points, thereby maintaining panel durability while enabling portable folding operation.
Solution Approach 2:
The panel support portion is divided into multiple joint portions that are sequentially arranged. This segmentation allows the folding stress to be distributed across multiple discrete support points rather than concentrated in a single area, reducing overall stress on the flexible display panel materials.
2Volume of moving object
If the bending degree is increased to achieve tighter folding, then compactness improves, but stress on weak materials exceeds threshold values
Solution Approach 1:
By arranging joint portions in a circular arc, the patent creates an optimized curvature radius that balances compactness with stress distribution. The curved geometry allows the panel to fold to a compact size while maintaining a bending radius that prevents excessive stress concentration on weak inorganic materials.
Solution Approach 2:
The patent optimizes the geometric parameters of the joint portions, specifically the circular arc radius and the spacing between sequentially arranged joints. These parameter adjustments enable the system to achieve tight folding (reduced volume) while keeping stress on materials below critical threshold values.
3Duration of action of stationary object
If stress is reduced on the flexible display panel during folding, then lifespan increases, but the folding mechanism becomes more complex
Solution Approach 1:
The panel support portion is segmented into multiple joint portions that are sequentially arranged along a circular arc. This segmentation approach distributes the stress-reduction function across multiple simple geometric elements rather than requiring a single complex mechanism, thereby extending device lifespan without excessive complexity.
Solution Approach 2:
The circular arc arrangement of joint portions provides a geometrically simple yet effective solution for stress distribution. This curved configuration naturally guides the folding motion and distributes loads without requiring complex active control mechanisms, achieving extended lifespan with moderate structural complexity.
Data Source
AI summary
A display device for reducing a stress applied to a display panel in a folded state is provided. The display device includes a display panel and a panel support portion. The display panel includes a bendable area. The panel support portion is combined to the display panel and includes a multi-joint member supporting the bendable area. The multi-joint member includes joint portions that are sequentially arranged, and a sliding member passing through the joint portions and moving inside the panel support portion. The sliding member includes a plate portion for arranging the joint portions, and a hook-shaped portion connected to a side of the plate portion and arranging the joint portions in a circular arc shape.