Foldable Display Support Plate With Porous Metal Impact Absorption
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Solution Overview
Problem
Existing display devices face challenges in enhancing impact resistance, particularly in foldable or rollable designs, which are prone to damage due to the flexibility and folding mechanisms.
Innovation Solution
Incorporating a porous metal layer with a support substrate below the display panel, combined with upper and lower support layers of varying densities, and an encapsulation material to enhance structural integrity and impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid support substrate is used below the display panel, then structural strength is improved, but impact resistance deteriorates due to rigid shock transmission
Solution Approach 1:
The patent employs a porous support substrate with controlled porosity (30-70%) that absorbs impact energy through deformation of the porous structure. The porous metal or ceramic material provides both structural strength and impact resistance by dissipating shock energy through the porous network rather than transmitting it rigidly to the display panel.
Solution Approach 2:
The patent uses composite support substrates combining multiple materials with different properties, such as a porous metal layer combined with a polymer foam layer, or a ceramic matrix with fibrous reinforcement. This composite structure achieves both high structural strength for supporting the display panel and superior impact resistance through energy absorption mechanisms in each material layer.
2Weight of stationary object
If the support substrate is made lighter to maintain compact size, then device portability is improved, but impact resistance deteriorates
Solution Approach 1:
The porous support substrate reduces weight through its hollow pore structure while maintaining impact resistance. The porous architecture provides a high strength-to-weight ratio, as the porous structure absorbs impact energy through deformation without requiring excessive material mass, thus achieving both light weight and good impact resistance simultaneously.
Solution Approach 2:
The patent converts the potential weakness of lightweight materials (low impact resistance) into a benefit by designing the porous structure to deliberately deform and absorb impact energy. The lightweight porous substrate transforms impact shocks into controlled deformation energy dissipation, turning what would be a vulnerability into an impact protection mechanism.
3Adaptability or versatility
If a foldable display panel is implemented, then display versatility is improved, but structural reliability deteriorates due to repeated folding stress
Solution Approach 1:
The porous support substrate provides flexibility for foldable applications while maintaining structural reliability. The porous structure can accommodate repeated bending and folding cycles without cracking, as the porous network flexes elastically. This enables the display panel to be foldable while the porous substrate maintains its integrity and continues to provide impact protection through folded configurations.
Solution Approach 2:
The patent employs a flexible porous support substrate that can bend and fold repeatedly without structural failure. The porous architecture allows the substrate to flex elastically during folding operations, maintaining its mechanical integrity and continued protective function in both folded and unfolded states, thus supporting display versatility while preserving structural reliability.
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 significantly improves the display device's impact resistance, ensuring durability and reliability in flexible and foldable configurations.
Implementation Method 1
a porous metal layer including a porous metal material
Implementation Method 2
impact resistance is enhanced (e.g., increased) by using a porous material for a support substrate disposed below a display panel
Data Source
AI summary
A display device includes a display panel including a foldable area folded based on an axis extending in a first direction, and a first non-foldable area and a second non-foldable area spaced apart from each other in a second direction crossing the first direction with the foldable area being therebetween, and a support plate below the display panel, and including: a porous metal layer including a porous metal material, an upper support layer on the porous metal layer and having a different density from the porous metal layer, and a lower support layer below the porous metal layer and having a different density from the porous metal layer.