Magnesium Alloy Support Structure for Foldable Display Heat Dissipation
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Solution Overview
Problem
Existing flexible display devices face challenges in maintaining reliability and efficiency due to the use of materials that either increase weight or require additional heat dissipation layers, leading to higher process costs and reduced folding reliability.
Innovation Solution
A display device with a support member composed of a magnesium alloy containing magnesium and additives like aluminum, zinc, or lithium, which provides thermal conductivity and reduces weight while maintaining structural integrity and folding reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional support materials are used, then structural strength is maintained, but weight increases and heat dissipation efficiency decreases
Solution Approach 1:
The patent applies parameter changes by selecting a magnesium alloy with specific compositional parameters (Mg-3Al-1Zn-0.5Zr in weight percent) and controlling physical parameters such as thickness (0.1-0.25mm) and Young's modulus (25-55 GPa) to achieve optimal balance between weight reduction and structural reliability for foldable display devices
Solution Approach 2:
The patent employs composite materials by using a magnesium-based alloy combining multiple elements (Al, Zn, Zr) to create a material that simultaneously provides low density, high strength, and good heat dissipation properties, overcoming the limitations of single-material solutions
2Temperature
If high thermal conductivity materials are used, then heat dissipation improves, but device weight increases
Solution Approach 1:
The patent utilizes parameter changes by exploiting the inherently high thermal conductivity of magnesium alloys while maintaining their low density, achieving a material that provides effective heat dissipation for display panels without the weight penalty of traditional thermal management materials
3Temperature
If additional heat dissipation layers are added, then thermal management improves, but process complexity and manufacturing cost increase
Solution Approach 1:
The patent applies merging by integrating the heat dissipation function directly into the support member structure itself, eliminating the need for separate heat dissipation layers and reducing overall device complexity while maintaining effective thermal management
Solution Approach 2:
The magnesium alloy support member serves multiple functions simultaneously: providing structural support, enabling device flexibility, and conducting heat away from the display panel, thereby reducing the need for dedicated components for each function
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 magnesium alloy support member enhances heat dissipation, reduces weight, and improves processability, resulting in improved folding reliability and reduced manufacturing costs.
Implementation Method 1
the first support member may perform a heat dissipation function
Data Source
AI summary
A display device includes a display panel having a foldable area, a first support member on a lower surface of the display panel, having a stretchable portion overlapping the foldable area, and including a magnesium alloy including magnesium (“Mg”) and an additive material, and a second support member on a lower surface of the first support member and including a first support plate and a second support plate spaced apart from each other. The content of the magnesium in the magnesium alloy is about 85 wt % to about 97 wt %.