Foldable Display Hinge Module for Magnetic Interference Reduction
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Solution Overview
Problem
Electronic devices face challenges in achieving a larger display size while maintaining miniaturization, mechanical stability during folding or unfolding, and reducing interference with magnetic fields from input devices due to ferromagnetic materials in hinge modules.
Innovation Solution
Incorporation of a paramagnetic rotation member and a rail member with higher yield strength in the hinge module to ensure stable folding/unfolding operations and minimize interference with magnetic fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If ferromagnetic metal is used in the hinge module, then mechanical strength and stability are improved, but magnetic field interference with the touch circuit increases
Solution Approach 1:
The patent extracts the ferromagnetic metal from the rotation member and relocates it to the rail member, which is positioned away from the touch circuit. This separation removes the harmful magnetic field interference from the vicinity of the touch circuit while preserving the mechanical strength benefits where they are needed for structural support.
Solution Approach 2:
The patent introduces a paramagnetic material as an intermediary substance in the rotation member between the ferromagnetic metal and the touch circuit. This intermediary reduces the magnetic field interference transmitted to the touch circuit while allowing the ferromagnetic metal to maintain its mechanical strength function in the rail member.
2Area of moving object
If the display size is increased, then multimedia service capability is improved, but device portability deteriorates
Solution Approach 1:
The patent implements a foldable display structure with a hinge module that enables dynamic configuration changes. The display can be folded into a compact form for portability and unfolded to a large size for multimedia consumption, allowing the device to adapt its physical state based on usage requirements.
3Reliability
If the hinge module structure is made more complex to ensure stable folding operation, then mechanical stability is improved, but device miniaturization becomes more difficult
Solution Approach 1:
The hinge module is segmented into distinct functional components: a rotation member for rotational movement and a rail member for linear guidance and structural support. This segmentation allows each component to be optimized independently, maintaining mechanical stability while managing overall complexity.
Solution Approach 2:
The rail member serves multiple functions: it provides structural support, guides the rotational movement, and houses the ferromagnetic metal for mechanical strength. This multi-functionality reduces the need for additional separate components, thereby managing complexity while ensuring stable folding operation.
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 hinge module maintains durability and reduces magnetic field interference with the display touch circuit, enabling stable operation and enhanced usability of foldable electronic devices.
Implementation Method 1
a hinge module including a rotation member and a rail member, wherein the rotation member includes a paramagnetic material
Implementation Method 2
a rail member connected to the rotation member and configured to rotate around the first rotation axis in the first accommodation space, wherein a yield strength of the rail member is greater than a yield strength of the rotation member
Data Source
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AI summary
Provided is an electronic device. The electronic device comprises: a housing including first and second housings; a display including a first display region connected to the first housing and a second display region connected to the second housing; and a hinge module connected to the first housing and the second housing. The hinge module includes: a rotation bracket including a first accommodation space providing a first rotation axis and a second accommodation space providing a second rotation axis; a rotation member including a first rotation member connected to the first display region and a second rotation member connected to the second display region; and a rail member including a first rail member connected to the first rotation member and configured to rotate within the first accommodation space and a second rail member connected to the second rotation member and configured to rotate within the second accommodation space.