Foldable Display Support Sheet Structure Against Hinge Deformation
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Solution Overview
Problem
Foldable electronic devices face durability issues due to structural weaknesses in their supporting structures, leading to permanent deformation and damage during repeated folding.
Innovation Solution
A flexible panel with a supporting sheet featuring a specific structure, including strip parts and edge parts arranged perpendicular to the folding axis, with optimized dimensions and shapes to enhance durability and reduce damage probability, combined with a heat sink to manage stress and improve heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional supporting sheet structure is used, then the device can be folded, but the supporting sheet suffers permanent deformation and damage during repeated folding
Solution Approach 1:
The supporting sheet is divided into multiple strip parts arranged in parallel, with edge parts connecting their ends. This segmentation allows the structure to better accommodate folding movements while maintaining overall integrity, preventing permanent deformation during repeated folding operations.
Solution Approach 2:
The edge parts are designed with asymmetric positioning where top ends are not aligned with the top end of the non-foldable region. This asymmetric configuration optimizes the stress distribution during folding, enhancing the supporting sheet's ability to withstand repeated folding without damage.
2Ease of manufacture
If the supporting sheet structure is simplified, then manufacturing is easier, but the probability of permanent deformation increases
Solution Approach 1:
The supporting sheet is divided into multiple strip parts arranged in parallel, with edge parts connecting their ends. This segmentation allows the structure to better accommodate folding movements while maintaining overall integrity, preventing permanent deformation during repeated folding operations.
Solution Approach 2:
The edge parts are strategically positioned at specific locations where stress concentration occurs during folding. By reinforcing these critical areas with edge parts connected to multiple strip parts, the structure achieves enhanced deformation resistance without requiring complex modifications throughout the entire supporting sheet.
3Reliability
If the supporting sheet is made more robust, then durability improves, but the device dimensions increase
Solution Approach 1:
The supporting sheet is divided into multiple strip parts arranged in parallel, with edge parts connecting their ends. This segmentation allows the structure to better accommodate folding movements while maintaining overall integrity, preventing permanent deformation during repeated folding operations.
Solution Approach 2:
Instead of increasing the thickness or width of the supporting sheet to improve durability, the invention adds structural elements (edge parts) in a different dimensional arrangement. The edge parts connect multiple strip parts at their ends, creating a three-dimensional reinforcement pattern that enhances durability without significantly increasing the overall device dimensions.
Data Source
AI summary
An electronic device is provided. The electronic device includes a flexible panel, a supporting sheet disposed under the flexible panel, and a heat sink disposed under the supporting sheet. The flexible panel has a foldable region and a non-foldable region. The supporting sheet includes a foldable portion overlapping the foldable region, and the foldable portion includes a plurality of strip parts and a plurality of edge parts. Each of the edge parts is connected to an end of at least two of the strip parts, and in a top view, a top end of the edge parts is not aligned with a top end of at least one portion of the non-foldable region. The heat sink includes a gap and a separation portion adjacent to the gap, and in the non-folded state, one of the edge parts overlaps the gap of the heat sink.