Foldable Display Multi-Joint Support with Elastic Plates
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Solution Overview
Problem
Foldable display devices face stress-related durability issues due to the deformation characteristics of materials used in flexible display panels, particularly when folded, which can lead to reduced lifespan and increased risk of damage.
Innovation Solution
A foldable display device design incorporating a multi-joint member with elastic plates and trapezoidal-shaped joint portions that rotate to distribute stress, reducing pressure on the bendable area and minimizing the risk of damage by allowing the elastic plates to transform and contact each other in the folded state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible display panel is folded, then the device is more portable and compact, but stress is applied to the panel which reduces its lifespan
Solution Approach 1:
The patent introduces a cushioning member positioned between the panel support portion and the bendable area of the display panel. This cushioning member is specifically designed to absorb and distribute the stress generated during folding operations, protecting the display panel from damage before the stress can cause harm. The cushioning member acts as a preventive measure that extends the panel's lifespan while maintaining foldability.
2Reliability
If the bending degree is reduced to protect the display panel, then the panel durability is improved, but the folding capability is limited
Solution Approach 1:
The cushioning member serves as an intermediary element between the rigid panel support structure and the flexible display panel. It mediates the interaction during folding by providing a compliant interface that allows greater bending degrees without directly transmitting harmful stress to the panel. This intermediary structure enables more aggressive folding geometries while protecting the panel.
Solution Approach 2:
The patent modifies the physical parameters of the support structure by introducing a cushioning member with specific mechanical properties (compliance, elasticity). This changes the stress distribution parameters during folding, allowing the system to accommodate larger bending radii and more extreme folding angles while maintaining panel integrity.
3Stability of the object's composition
If a rigid support structure is used to hold the display panel, then structural stability is improved, but stress concentration increases during folding
Solution Approach 1:
The patent applies local quality by making only the specific region that contacts the bendable area compliant, while maintaining rigidity in other parts of the support structure. The cushioning member is strategically positioned only where stress concentration occurs during folding, providing localized compliance without compromising the overall structural stability of the support portion.
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 effectively reduces stress on the display panel during folding, enhancing durability and extending the lifespan of the device by minimizing the risk of cracks and other defects, while maintaining the elastic plates' initial form when unfolded.
Implementation Method 1
the elastic plate may be bent with respect to the fixed terminal and may closely contact the main body when a pressure is applied to the support side
Data Source
AI summary
A display device reduces or minimizes a stress received by a display panel in a folded state. The display device includes a display panel including a bendable area; and a panel support portion combined to the display panel and including a multi-joint member to support the bendable area, and the multi-joint member includes a plurality of joint portions sequentially arranged in a first direction and combined to each other to rotate with respect to one another, and at least one of the joint portions includes an elastic plate at an edge of a support side arranged toward the bendable area.