Bezel Buffer Design for Foldable Display Wrinkle Prevention
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Solution Overview
Problem
Conventional foldable portable information devices experience deterioration in appearance quality due to repetitive compressive forces on the bezel member, leading to loosening and wrinkling as the device is folded.
Innovation Solution
A foldable portable information device design featuring a bezel member with a buffer portion that absorbs compressive forces, positioned farther away from the hinge mechanism's rotation center, which is more flexible and includes hole portions to effectively distribute pressure, preventing loosening and wrinkling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the bezel member is positioned closer to the display to improve appearance quality, then the appearance quality is improved, but the compressive force from folding causes loosening and wrinkling
Solution Approach 1:
The bezel member is designed with different flexibility characteristics at different locations. The first region (near the hinge mechanism) is made more flexible to absorb compressive forces, while the second region (away from the hinge) maintains normal rigidity for appearance quality. This local differentiation allows the bezel to withstand folding stresses without compromising overall appearance.
Solution Approach 2:
The bezel member is divided into multiple regions with different flexibility properties. The first region contains a hinge mechanism recess and is designed to be more flexible, while the second region is designed to be less flexible. This segmentation allows different parts of the bezel to perform different functions - stress absorption and appearance maintenance respectively.
2Reliability
If the bezel member is made more flexible to absorb compressive force, then the durability is improved, but the appearance quality may deteriorate
Solution Approach 1:
The bezel member is designed with different flexibility characteristics at different locations. The first region (near the hinge mechanism) is made more flexible to absorb compressive forces, while the second region (away from the hinge) maintains normal rigidity for appearance quality. This local differentiation allows the bezel to withstand folding stresses without compromising overall appearance.
3Reliability
If the bezel member is positioned farther from the rotation center to reduce compressive force, then the durability is improved, but the appearance quality deteriorates
Solution Approach 1:
The bezel member is designed with different flexibility characteristics at different locations. The first region (near the hinge mechanism) is made more flexible to absorb compressive forces, while the second region (away from the hinge) maintains normal rigidity for appearance quality. This local differentiation allows the bezel to withstand folding stresses without compromising overall appearance.
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 buffer portion in the bezel member effectively absorbs compressive forces, preventing loosening, wrinkling, and maintaining the appearance quality of the device despite repetitive folding, ensuring a high-quality finish and durability.
Implementation Method 1
the bezel member has a buffer portion at least at a position overlapping a bent portion of the display, the buffer portion being able to absorb compressive force applied thereto as the first chassis member and the second chassis member are folded from a flat opened state
Data Source
AI summary
A portable information device includes a first chassis member, a second chassis member, a hinge mechanism, a display and a bezel member provided to bridge an outer peripheral edge portion of the display and an outer peripheral edge portion of the first and second chassis members. The bezel member is arranged farther away from the inner surfaces of the first and second chassis members than a rotation center of the hinge mechanism. The bezel member has a buffer portion at least at a position overlapping a bent portion of the display. The buffer portion can absorb compressive force F applied thereto as the first and the second chassis members are folded from a flat opened state.