Foldable Display Support Plate With Variable Fiber Spacing
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Solution Overview
Problem
Existing flexible electronic devices face challenges in achieving a balance between impact resistance, folding properties, and lightweight design, particularly in flexible display panels that are deformable into various forms.
Innovation Solution
A display device is divided into folding and non-folding regions, with a support plate comprising a matrix portion and dispersed fibers, where the folding support portion has a lower Young's modulus than the non-folding support portions, and includes specific fiber materials and resin compositions to enhance flexibility and impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the support plate uses a uniform structure throughout, then manufacturing is simple, but folding properties at the folding region deteriorate
Solution Approach 1:
The support plate employs different fiber spacing configurations in different regions: larger spacing in the folding region to enable flexibility, and smaller spacing in non-folding regions to provide structural support. This local differentiation resolves the contradiction between manufacturing simplicity and folding properties by applying quality variation only where necessary.
Solution Approach 2:
The support plate is divided into multiple regions with different fiber spacing characteristics. The first region (folding region) has larger fiber spacing while the second region (non-folding region) has smaller fiber spacing, allowing each segment to fulfill its specific functional requirement independently.
2Strength
If the support plate uses higher density fibers, then impact resistance improves, but folding flexibility deteriorates
Solution Approach 1:
The fiber density is optimized locally: the folding region uses larger fiber spacing to maintain flexibility, while non-folding regions use smaller spacing for enhanced impact resistance. This resolves the contradiction by applying different density levels to different functional zones rather than using a uniform high-density structure throughout.
Solution Approach 2:
The support plate structure is segmented into regions with different fiber densities. The first region has reduced fiber density to enable folding, while the second region has higher fiber density for impact protection, allowing both conflicting requirements to be satisfied simultaneously in their respective zones.
3Weight of moving object
If the support plate is made thinner, then device weight reduces, but mechanical integrity deteriorates
Solution Approach 1:
The support plate uses a composite structure combining polymer matrix with dispersed fibers of different materials (glass fibers, carbon fibers, or aramid fibers). This composite approach enables the plate to maintain mechanical integrity at reduced thickness by leveraging the high strength-to-weight ratio of the fiber reinforcement.
Solution Approach 2:
The fiber reinforcement is strategically distributed with varying density across different regions. The folding region has optimized fiber spacing for flexibility, while non-folding regions have higher fiber density for structural strength, allowing the thin plate to maintain overall mechanical integrity despite weight reduction.
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 provides a display device with improved impact resistance and folding properties, maintaining both flexibility and mechanical integrity while supporting deformable forms.
Implementation Method 1
a support plate disposed below the display module and including a folding support portion corresponding to the folding region, a first non-folding support portion corresponding to the first non-folding region, and a second non-folding support portion corresponding to the second non-folding region
Implementation Method 2
the support plate includes a matrix portion, a plurality of first fibers dispersed in the matrix portion, extending in the first direction, and spaced apart in the second direction, and a plurality of second fibers dispersed in the matrix portion
Data Source
AI summary
A display device includes a display module including a folding display portion, a first non-folding display portion, and a second non-folding display portion, and a support plate disposed below the display module and including a folding support portion, a first non-folding support portion, and a second non-folding support portion, wherein the support plate includes a matrix portion, first fibers dispersed in the matrix portion, and second fibers dispersed in the matrix portion, the first fibers each include a plurality of first sub-fibers corresponding to the folding support portion and spaced apart at a first interval, and a plurality of second sub-fibers corresponding to the first non-folding support portion and the second non-folding support portion and spaced apart at a second interval which is smaller than the first interval.