Foldable Display Hinge Structure for Minimal Fold Radius
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing foldable display devices face challenges in minimizing the arc-shaped curved portion when folded, leading to potential gaps between bodies and increased risk of deformation or breakage, and they do not effectively satisfy consumer demand for a large display screen in compact devices.
Innovation Solution
A foldable display device with a hinge structure that includes a first and second body, a display part, and a hinge device with main shafts, link connectors, and connection plates, allowing for precise folding and unfolding while minimizing the arc-shaped curved portion, and incorporating springs and gears to maintain alignment and correct length deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the display part is folded like a paper sheet, then the device can be compacted, but an arc-shaped curved portion remains that creates gaps between bodies
Solution Approach 1:
The display part is divided into multiple flexible display sections that can be folded at specific intervals. This segmentation allows the display to be folded more compactly while minimizing the arc-shaped curved portion at the folding location, thereby reducing gaps between bodies when folded.
Solution Approach 2:
The hinge device introduces a rotational dimension to the folding mechanism, allowing the first and second bodies to rotate relative to each other. This enables precise control of the folding angle and positioning, ensuring that connection plates align properly and minimizing the arc-shaped curved portion while maintaining compact folded size.
2Device complexity
If the hinge structure is simplified, then the device complexity is reduced, but alignment precision and ability to correct length deviations deteriorate
Solution Approach 1:
The hinge device incorporates springs that provide elastic force to automatically adjust and correct length deviations of the flexible display during folding and unfolding. This feedback mechanism maintains alignment precision without requiring complex active control systems, thus balancing simplicity with precision.
Solution Approach 2:
Connection plates are introduced as intermediary elements between the first and second bodies, facilitating precise alignment and positioning during folding. These plates act as mediators that ensure proper alignment while maintaining a relatively simple hinge structure.
3Shape
If the arc-shaped curved portion is minimized, then gaps between bodies are prevented, but the risk of deformation or breakage increases
Solution Approach 1:
Springs are incorporated into the hinge device to provide elastic cushioning before the flexible display reaches its folding limit. This beforehand cushioning prevents sudden impacts and reduces the risk of deformation or breakage while maintaining minimal arc-shaped curved portion.
Solution Approach 2:
The hinge device allows dynamic adjustment of the folding angle and positioning parameters. By optimizing these parameters, the display can be folded with minimal arc-shaped curved portion while maintaining safety margins that prevent deformation or breakage through proper stress distribution.
Data Source
AI summary
A foldable display device is proposed, the foldable display device including a first body and a second body formed in a plate shape to be arranged symmetrically; a display part attached to the first body and the second body to be folded or unfolded; and a hinge device coupled to the first body and the second body to connect the bodies to each other to allow the first body and the second body to be folded and unfolded and having first and second bracket, first and second main shafts, a rotation inducing part, and a movable part composed of first and second connection plates, wherein when the first and second bodies are folded, the first and second connection plates are in proximity to each other, and the first and second link connectors move about the first and second main shafts to be in proximity to each other.