Foldable Display Bottom Plate With Metal-Plastic Support Structure
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Solution Overview
Problem
Existing flexible display devices face challenges in maintaining foldability and durability while minimizing weight and deformation under stress.
Innovation Solution
A display device design incorporating a bottom plate with a first area made of metal for foldability and a second area made of plastic for reduced weight, connected through protrusions to enhance the connecting force and minimize deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the entire bottom plate is made of metal material, then the structural strength and foldability are improved, but the total weight increases
Solution Approach 1:
The bottom plate is divided into different material regions: a first region with metal material providing structural strength and foldability, and a second region with plastic material reducing weight. This local differentiation allows each area to have properties optimized for its specific function.
Solution Approach 2:
The bottom plate uses composite construction with both metal and plastic materials integrated into a single structure. The metal portion provides necessary strength and flexibility for folding, while the plastic portion reduces overall weight, achieving a balance between these conflicting requirements.
2Weight of stationary object
If the bottom plate is made of lightweight plastic material, then the total weight is reduced, but the structural strength and resistance to deformation decrease
Solution Approach 1:
The bottom plate is divided into different material regions: a first region with metal material providing structural strength and foldability, and a second region with plastic material reducing weight. This local differentiation allows each area to have properties optimized for its specific function.
Solution Approach 2:
The bottom plate uses composite construction with both metal and plastic materials integrated into a single structure. The metal portion provides necessary strength and flexibility for folding, while the plastic portion reduces overall weight, achieving a balance between these conflicting requirements.
3Ease of manufacture
If the bottom plate is made of a single material, then the manufacturing process is simplified, but the ability to suppress deformation under stress is reduced
Solution Approach 1:
The bottom plate is divided into different material regions: a first region with metal material providing structural strength and foldability, and a second region with plastic material reducing weight. This local differentiation allows each area to have properties optimized for its specific function.
Solution Approach 2:
The bottom plate uses composite construction with both metal and plastic materials integrated into a single structure. The metal portion provides necessary strength and flexibility for folding, while the plastic portion reduces overall weight, achieving a balance between these conflicting requirements.
4Device complexity
If the connecting area between different material regions is reduced, then the device complexity is reduced, but the connecting force and structural integrity decrease
Solution Approach 1:
A protrusion structure extends in the thickness direction to increase the connecting surface area between the metal and plastic regions. This dimensional approach allows the connection to be strengthened without complicating the planar layout or increasing device complexity.
Data Source
AI summary
A display device includes a folding area and a non-folding area. The display device further includes a display panel and a bottom plate disposed under the display panel to support the display panel. The bottom plate may include different materials. The bottom plate may also include a first area overlapping the folding area of the display device and a second area overlapping the non-folding area of the display device. The first area includes a pattern part and a non-pattern part between the pattern part and the second area.