Flexible Display Support Substrate With Segmented Through-Holes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible display devices face reduced physical durability and reliability due to decreased stiffness as they become thinner and lighter, leading to stress concentration and potential fracture during bending operations.
Innovation Solution
A support substrate with a bending area, transition area, and non-bending area, featuring specific patterns of through holes in each region to gradually increase rigidity from the bending area to the non-bending area, reducing stress concentration and improving bending resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the flexible display panel is made thinner and lighter, then the portability and design flexibility are improved, but the physical durability and reliability deteriorate due to reduced stiffness
Solution Approach 1:
The support substrate is divided into multiple regions (bending area, transition area, non-bending area) with different through-hole patterns. Each region has specifically designed hole sizes, shapes, and distributions to provide localized mechanical properties - high flexibility in bending area and high strength in non-bending area, resolving the contradiction between overall thinness and localized durability
Solution Approach 2:
Different regions of the support substrate are given different local structures: the bending area has larger through-holes for flexibility, the transition area has gradually changing hole patterns for stress distribution, and the non-bending area has smaller or no holes for strength. This local differentiation allows the panel to be thin overall while maintaining durability where needed
2Length of moving object
If the flexible display panel is made thinner, then the portability is improved, but the resistance to external force and damage reduces
Solution Approach 1:
The support substrate is segmented into functional zones with different through-hole characteristics. The bending area uses larger holes to maintain flexibility during thinning, while the non-bending area uses smaller or absent holes to maintain strength, allowing the entire panel to be thinner without compromising damage resistance in critical areas
Solution Approach 2:
The support substrate functions as a composite structure with varying material density distribution through the through-hole patterns. The combination of hollow regions (through-holes) and solid substrate material creates a composite structure that provides both lightness (from holes) and strength (from solid portions), enabling thin panels with improved damage resistance
3Quantity of substance
If the flexible display panel is made lighter, then the portability is improved, but the structural stability and resistance to fracture during bending deteriorates
Solution Approach 1:
The support substrate is divided into bending and non-bending areas with different through-hole patterns. The bending area has optimized hole distributions that reduce material quantity for flexibility, while the non-bending area has reduced holes or different patterns that maintain structural stability during bending, preventing fracture while keeping the panel light
Solution Approach 2:
The through-hole parameters (size, shape, distribution, density) are varied across different regions of the support substrate. The bending area has larger, more densely distributed holes to reduce material and increase flexibility, while the transition and non-bending areas have gradually changing hole patterns that maintain structural integrity, achieving lightness without sacrificing bending reliability
Data Source
AI summary
The present disclosure relates to a support substrate for a flexible display device, and a flexible display device, the support substrate comprises a bending area, a transition area, and a non-bending area, wherein the transition area is located between the bending area and the non-bending area, the bending area has a plurality of first through holes and the transition area has a plurality of second through holes, wherein an area ratio of the plurality of first through holes in the bending area is greater than an area ratio of the plurality of second through holes in the transition area.