Foldable Display Rear Metal Plate for Crease-Resistant Hinge Support
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Solution Overview
Problem
Foldable displays are vulnerable to external impacts, leading to shear motion or torsion, which can damage the folding part and increase thickness, limiting the folding radius and causing creases that impair visibility.
Innovation Solution
Incorporating a metal plate with recesses and protrusions on the rear surface of the display, coupled by a hinge structure, to reduce shear motion and torsion, allowing for a thinner folding part without a cover panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thick cover panel is used to ensure durability, then the display durability is improved, but the thickness of the folding part increases and the folding radius is limited
Solution Approach 1:
The patent removes the cover panel from the display structure, extracting the protective function to a separate metal plate located at the rear surface. This allows the front display surface to remain thin and flexible for folding while durability is maintained through the rear metal plate reinforcement
Solution Approach 2:
The protective metal plate is positioned at the rear surface of the display rather than the front, changing the spatial dimension of protection. This rear-side reinforcement approach allows the front folding surface to remain thin while still providing impact resistance through the metal plate structure
2Weight of moving object
If the lattice structure and display are formed to be thin for portability, then the portability is improved, but the folding part becomes vulnerable to external impact
Solution Approach 1:
The metal plate is selectively positioned at the rear surface of the display, providing localized reinforcement exactly where impact protection is needed. This allows the rest of the display to remain thin and lightweight, achieving impact resistance without adding excessive weight
Solution Approach 2:
The display structure combines a thin lattice structure with a metal plate reinforcement, creating a composite construction that provides both lightweight properties and impact resistance. The metal plate serves as a protective layer while the lattice structure maintains flexibility and light weight
3Strength
If additional adhesive layer is added to attach the cover panel, then the attachment strength is improved, but the manufacturing cost increases
Solution Approach 1:
The patent removes the cover panel and its associated adhesive layer from the display structure. By extracting this component, the manufacturing process is simplified and costs are reduced, while the protective function is transferred to the metal plate at the rear surface
Data Source
AI summary
An electronic device is provided. The electronic device includes a first housing and a second housing, a foldable display including a first area disposed on the front surface of the first housing and a second area disposed on the front surface of the second housing, a hinge structure connecting the first housing to the second housing such that the second housing is rotatable about a first axis with respect to the first housing, and a metal plate disposed on the rear surface of the foldable display, wherein the metal plate includes a first metal plate disposed on the rear surface of the first area and covering at least a part of the first housing and a part of the hinge structure, and a second metal plate disposed on the rear surface of the second area and covering at least a part of the second housing.