Foldable Display Hinge with Slidable Platforms
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Solution Overview
Problem
Conventional foldable display devices face issues with stress concentration on the edge of free-standing bend portions and compressive stress causing the bend portion to protrude or separate from the housing when closed, leading to potential damage.
Innovation Solution
A foldable display device design featuring a hinge aligned with the bend portion and slidable platforms to disperse stress and compensate for inner diameter differences, with optional repeatable adhering components and torsional components like springs or gears to facilitate bending without damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the bend portion is free-standing, then the display panel can be folded, but stress concentrates on the edge of the bend portion causing damage
Solution Approach 1:
A support structure comprising a hinge and slidable platforms is introduced as an intermediary between the bend portion and the housing. The slidable platforms distribute stress from the bend portion across multiple contact points rather than concentrating it at the edge, preventing damage while maintaining foldability.
2Strength
If the bend portion is entirely adhered to the housing, then edge damage is prevented, but compressive stress causes the bend portion to protrude inwardly and separate from the housing
Solution Approach 1:
The slidable platforms are designed to move dynamically in response to stress conditions. When compressive stress occurs during closing, the platforms can slide to accommodate the inner diameter difference between the display panel and housing, preventing protrusion and separation while maintaining proper alignment.
3Stress or pressure
If the bend portion is entirely adhered to the housing, then stress is distributed, but the bend portion protrudes inwardly when closed
Solution Approach 1:
The slidable platforms act as intermediaries that maintain the correct shape and position of the bend portion. They provide a mechanical interface that allows stress distribution through multiple contact points while preventing the bend portion from protruding inwardly by accommodating dimensional differences through controlled sliding motion.
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 effectively disperses stress and compensates for diameter differences, preventing damage to the display panel during bending and maintaining the bend portion's alignment with the housing, enhancing the durability and functionality of the foldable display device.
Implementation Method 1
the torsional component includes a spring
Implementation Method 2
the foldable display device further includes a fastening adhesive adhered between one of the slidable platforms and the bottom surface of the bend portion of the display panel
Data Source
AI summary
A foldable display device includes a display panel having two flat portions and a bend portion between the two flat portions; a hinge substantially aligned with and beneath the bend portion of the display panel; a plurality of slidable platforms between the hinge and a bottom surface of the bend portion of the display panel; and a repeatable adhering component between one of the slidable platforms and the bottom surface of the bend portion of the display panel, wherein the repeatable adhering component comprises a self-adhesive pad or a weak adhesive.