Foldable Display Link Assembly for Stable Bending Curvature
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Solution Overview
Problem
Existing foldable display apparatuses struggle to stably maintain a bending curvature and minimize bending stress on the display panel, especially when transitioning between folded and unfolded states due to empty spaces caused by hinge structures.
Innovation Solution
A foldable display apparatus featuring a link assembly with bending guide members, link parts, and connecting members that guide and support the bending area, allowing for stable curvature maintenance and reduced stress by compensating for length changes during folding and unfolding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hinge with link structure is used to enable folding, then the display apparatus can be folded and unfolded, but empty spaces between housings cause unstable bending curvature maintenance
Solution Approach 1:
A bending guide member is introduced as an intermediary component between the first and second housings to support and guide the bending area of the display panel. This mediator fills the empty space created by the hinge structure and provides continuous support during folding and unfolding, ensuring stable bending curvature maintenance while preserving folding capability.
2Adaptability or versatility
If a hinge structure is used to enable folding, then the display apparatus can change between folded and unfolded states, but bending stress on the display panel increases
Solution Approach 1:
The bending guide member is positioned to provide support to the bending area before significant bending stress develops. By maintaining contact and providing guidance during the early stages of folding and unfolding, the structure prevents excessive stress concentration on the display panel while still enabling full state transitions.
3Volume of moving object
If the display panel is bent to a small radius, then a compact folded state is achieved, but the bending area cannot be maintained in a plane state when unfolded
Solution Approach 1:
The bending guide member extends in the width direction of the display panel, creating a dimensional constraint that controls the bending trajectory. This dimensional guidance ensures that when unfolded, the bending area returns to and maintains a planar state, while still allowing compact folding when bent to a small radius.
Data Source
AI summary
Disclosed is a foldable display apparatus which can stably maintain a bending curvature of a folded flexible display, and can maintain a bending area of an unfolded flexible display in a plane state. The foldable display apparatus includes a link assembly connected between first and second housings to support a bending area of a display panel, and configured to guide bending of the bending area. The link assembly includes a plurality of bending guide members configured to support the bending area, a plurality of link parts connected to both ends of each of the plurality of bending guide members, and a plurality of link connecting members respectively provided between the plurality of link parts, and configured to connect two adjacent link parts.