Foldable Display Hinge Linkage for Screen Strain Relief
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Solution Overview
Problem
Folding and unfolding processes in foldable electronic devices often lead to damage of flexible display screens due to excessive squeezing or stretching, resulting in a short service life.
Innovation Solution
An electronic device design featuring a first and second device body, a flexible display screen divided into three parts, and a connecting rod mechanism that allows for controlled movement and redundancy formation during folding and unfolding, reducing extrusion and pulling forces on the display screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the foldable electronic device is folded inward with a small bending radius at the hinge, then the device achieves compact folding, but the flexible display screen is excessively squeezed causing crease or breakage
Solution Approach 1:
The patent introduces a dynamic adjustment mechanism that changes the bending radius during the folding process. The mechanism allows the hinge to transition from a small bending radius configuration to a large bending radius configuration dynamically, ensuring the display screen is never subjected to excessive squeezing while maintaining compact folding capability
Solution Approach 2:
The patent introduces an intermediate mechanical structure (the adjustable hinge mechanism) between the display screen and the folding action. This intermediary mechanism absorbs and redistributes the folding forces, preventing direct transmission of excessive squeezing forces to the display screen while enabling compact folding
2Strength
If the foldable electronic device is folded outward with a large bending radius at the hinge, then the display screen is protected from squeezing, but the flexible display screen is excessively pulled and deformed causing breakage
Solution Approach 1:
The patent employs a dynamic hinge mechanism that adjusts the bending radius in real-time during the folding process. When folding outward, the mechanism transitions to a configuration with a controlled, moderate bending radius that prevents excessive pulling on the display screen while still enabling the folding motion
Solution Approach 2:
The patent changes the bending radius parameter dynamically during the folding process. By adjusting the hinge geometry and configuration, the system maintains the bending radius within an optimal range that protects the display screen from both squeezing and excessive pulling forces throughout the entire folding cycle
3Device complexity
If a fixed hinge structure is used in the foldable device, then the structure is simple, but the flexible display screen is prone to damage during folding resulting in short service life
Solution Approach 1:
The patent replaces the fixed hinge structure with a dynamic, adjustable hinge mechanism that can change its geometric configuration during operation. This dynamic structure actively adapts to protect the display screen throughout the folding process, significantly improving reliability while adding controlled complexity to the hinge mechanism
Solution Approach 2:
The patent designs the hinge mechanism to automatically adjust its configuration in response to the folding motion without requiring external control systems. The mechanism self-regulates the bending radius to protect the display screen, achieving improved reliability through self-service functionality that minimizes the added complexity
Data Source
AI summary
An electronic device is provided. The electronic device includes a first device body, a second device body, a flexible display screen, a shaft component, and a connecting rod mechanism. The first device body is rotatably connected to the second device body via the shaft component. The connecting rod mechanism is connected to the first device body and the shaft component, respectively. The flexible display screen includes a first display screen on the first device body, a second display screen on the second device body, and a third display screen connected to the first display screen and the second display screen. In a folding process of the electronic device, the shaft component drives the first device body to approach the shaft component via the connecting rod mechanism. In an unfolding process of the electronic device, the shaft component drives the first device body to move away from the shaft component.