Foldable Display Hinge Isolation Structure for Quiet Operation
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Solution Overview
Problem
In foldable electronic devices with flexible displays, the folding or unfolding process can cause abnormal sounds due to parts colliding or rubbing against each other, leading to structural damage and a compromised user experience.
Innovation Solution
A rotating shaft apparatus with a metal support sheet and an isolation pad is used to isolate the flexible display from structural members, reducing the likelihood of scratches and abnormal sounds during folding or unfolding, while minimizing production costs through a simplified structure and assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a flexible display is used in a foldable electronic device to achieve a large display area, then the display area is increased, but the electronic device is not easy to carry when unfolded
Solution Approach 1:
The patent applies the dynamics principle by implementing a foldable display structure where the display can dynamically change its configuration between folded and unfolded states. The flexible display is integrated with a rotating shaft apparatus that enables the display to transition between a compact folded state for portability and a large unfolded state for use, allowing the device to adapt its form factor based on operational needs.
2Volume of moving object
If the flexible display is made bendable and flexible to enable folding, then the device can be folded to reduce volume, but parts inside the electronic device may collide or rub against each other to cause an abnormal sound during folding or unfolding
Solution Approach 1:
The patent applies the intermediary principle by introducing an isolation pad as a mediator component between the flexible display and other internal structural parts. This isolation pad acts as a buffer that prevents direct contact and collision between the flexible display and surrounding components during the folding and unfolding process, thereby eliminating the source of abnormal sounds while maintaining the foldable functionality.
3Reliability
If the flexible display is protected from structural members during folding, then structural damage is reduced, but additional components may increase device complexity
Solution Approach 1:
The patent applies the flexible shells and thin films principle by using a thin isolation pad structure to protect the flexible display from structural members. This thin film approach provides effective protection against structural damage while occupying minimal space and adding minimal complexity to the overall device structure, maintaining the simplicity of the foldable design.
Data Source
AI summary
Embodiments of this application provide an electronic device. The electronic device includes a flexible display and a rotating shaft apparatus. The rotating shaft apparatus is disposed on a backlight side of the flexible display. The rotating shaft apparatus includes a shaft base, a swing arm assembly, a door plate assembly, a metal support sheet, and an isolation pad. The swing arm assembly includes a first swing arm and a second swing arm. The first swing arm and the second swing arm are disposed on two sides of the shaft base. Both the first swing arm and the second swing arm are rotatably connected to the shaft base. The door plate assembly includes a first door plate connected to the first swing arm and a second door plate connected to the second swing arm. The metal support sheet is disposed between the door plate assembly and the flexible display.