Foldable Display Support Part Through-Hole Layout for Rebound Control
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Solution Overview
Problem
Existing support parts in display modules of foldable electronic devices suffer from large rebound forces and light-shadow creases due to adhesive creep and uneven stress distribution, leading to structural issues during folding.
Innovation Solution
A support part design with specific through hole arrangements in arc-shaped regions, including staggered and varying hole lengths and spacings, to evenly distribute stress and reduce material volume, facilitating smoother bending and reducing rebound forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive is used to bond the support part to the hinge, then the support part can be assembled, but adhesive creep causes light-shadow creases after folding
Solution Approach 1:
The patent removes the adhesive layer from the support part structure, extracting the harmful element that causes creep and light-shadow creases. The support part is designed with through holes that directly engage with the hinge structure, eliminating the need for adhesive bonding and its associated creep problems.
Solution Approach 2:
The patent replaces the adhesive bonding mechanism with a mechanical engagement system using through holes. The support part features multiple through holes that mechanically connect to the hinge, substituting the chemical bonding process with a mechanical interlocking system that avoids adhesive creep.
2Ease of operation
If through holes are provided in the first arc-shaped region, then bending is facilitated, but rebound force increases
Solution Approach 1:
The patent applies different through hole configurations to different regions of the support part. The first arc-shaped region has through holes optimized for bending flexibility, while the second arc-shaped region has through holes positioned to maintain structural strength and control rebound force. This localized optimization allows bending facilitation without excessive rebound.
Solution Approach 2:
The patent varies parameters such as through hole size, spacing, and distribution across different regions of the support part. By changing these geometric parameters locally, the design achieves optimal bending characteristics in the first arc-shaped region while controlling rebound force through strategic hole placement in the second arc-shaped region.
3Force
If through holes are arranged to reduce material volume, then rebound force decreases, but structural strength may be compromised
Solution Approach 1:
The patent implements different through hole densities and configurations in different regions. The first arc-shaped region has higher hole density to reduce material volume and rebound force, while the second arc-shaped region has optimized hole placement to maintain structural strength. This localized approach balances strength reduction with rebound force control.
Solution Approach 2:
The patent divides the support part into multiple arc-shaped regions with distinct through hole patterns. Each region is segmented with specific hole arrangements tailored to its functional requirements, allowing independent optimization of material removal in the bending region while preserving structural integrity in support regions.
Data Source
AI summary
A support part includes a bending region and a plane region. The bending region includes a first arc-shaped region, a transition region, and a second arc-shaped region. The first arc-shaped region is provided with a plurality of first through holes. The transition region is provided with a plurality of second through holes. The second arc-shaped region is provided with a plurality of third through holes. Lengths of the first through holes decrease in the width direction. Lengths of a portion of the second through holes decrease in the width direction, and lengths of another portion of the second through holes are the same in the width direction. Lengths of the plurality of third through holes are the same in the width direction.