Foldable Display Support Structure for Impact Resistance and Crease Control
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Solution Overview
Problem
Flexible display devices require impact resistance to protect the display panel from external forces while maintaining surface quality during folding operations.
Innovation Solution
A display device with a lower member featuring a base part with varying flexural moduli and support lines made of stainless steel, titanium, aluminum, or their alloys, arranged in a woven structure to enhance impact resistance and folding characteristics without deteriorating the display panel's surface quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a lower member with high impact resistance is used to protect the display panel, then impact resistance is improved, but the lower member may cause surface quality deterioration during folding operations
Solution Approach 1:
The lower member is designed with different flexural moduli in different regions: the first portion overlapping the folding region has a lower flexural modulus to allow bending without damaging the display panel, while the second and third portions overlapping the non-folding regions have higher flexural moduli to provide impact resistance. This local differentiation resolves the contradiction between impact protection and folding compatibility.
2Strength
If the lower member has high flexural modulus throughout to ensure impact resistance, then impact resistance is improved, but the lower member cannot accommodate folding operations without causing creases
Solution Approach 1:
The lower member is divided into portions with different flexural moduli adapted to local requirements: the first portion has lower flexural modulus for folding regions to enable bending, while second and third portions have higher flexural modulus for non-folding regions to maintain impact resistance. This resolves the contradiction between uniform strength and adaptive folding capability.
Solution Approach 2:
The lower member is segmented into multiple portions (first, second, and third portions) with different mechanical properties. The first portion corresponds to the folding region with lower flexural modulus, while the second and third portions correspond to non-folding regions with higher flexural modulus. This segmentation allows each region to perform its specific function optimally.
3Adaptability or versatility
If the lower member is made flexible to accommodate folding, then folding capability is improved, but impact resistance is reduced
Solution Approach 1:
Different regions of the lower member have different flexural moduli tailored to their functional requirements: the folding region has lower flexural modulus for flexibility, while non-folding regions have higher flexural modulus for impact resistance. This local quality differentiation resolves the contradiction between overall flexibility and localized strength.
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 enhanced impact resistance and maintains the surface quality of the display panel by absorbing external forces and minimizing creases during repeated folding operations.
Implementation Method 1
a base part including a plurality of portions having different flexural moduli
Implementation Method 2
support lines that are disposed inside the base part and that intersect each other in a plan view and define openings
Data Source
AI summary
A display device includes a display panel including non-folding regions and a folding region disposed between the non-folding regions and a lower member disposed under the display panel. The lower member includes a base part including a plurality of portions having different flexural moduli and support lines that are disposed inside the base part and that intersect each other in a plan view and define openings.