Foldable Display Support with Fiber Layers and Slits for Pen Input
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Solution Overview
Problem
The use of a metal support member in foldable display devices reduces the sensitivity of touch input using an electronic pen.
Innovation Solution
A foldable display device with a panel support member composed of multiple fiber yarn layers and slits, designed to maintain touch sensitivity by using a lattice pattern and through holes for optical devices, supported by a polymer structure that allows bending without interfering with electromagnetic signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal support member is used to support the display panel, then the structural strength and stability are improved, but the sensitivity of touch input using an electronic pen is reduced
Solution Approach 1:
The support member uses a composite structure combining a metal substrate with an insulating layer and conductive pattern, where the metal provides structural strength and the conductive pattern maintains electromagnetic signal transmission for touch sensitivity
Solution Approach 2:
An insulating layer is introduced as an intermediary between the metal support member and the touch sensing layer, preventing direct interference while allowing mechanical support function to be maintained
2Ease of operation
If the display device is made foldable to increase portability, then the ease of operation and portability are improved, but the reliability and touch sensitivity may be compromised
Solution Approach 1:
The support member is designed with flexible properties and slits to accommodate the dynamic folding motion, allowing the structure to adapt to bending while maintaining support function and touch sensitivity in both folded and unfolded states
Solution Approach 2:
Slits are introduced to divide the support member structure, creating regions that can flex during folding while maintaining overall structural integrity and support capability
Data Source
AI summary
A foldable display device includes a display panel which includes a folding area, a first non-folding area disposed adjacent to a first side of the folding area, and a second non-folding area disposed adjacent to a second side of the folding area opposite to the first side of the folding area, and a panel support member which is disposed on a surface of the display panel and in which a plurality of slits extending in a first direction is defined. The panel support member includes a first layer which has a first fiber yarn extending in a second direction intersecting the first direction, a second layer which has a second fiber yarn extending in the first direction, and a third layer which has a third fiber yarn extending in the second direction.