Two-Axis Foldable Display Hinge for Precise Low-Cost Folding
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Solution Overview
Problem
Current foldable display devices face challenges in reducing manufacturing costs while maintaining precise folding and unfolding mechanisms, often relying on complex driving mechanisms and sophisticated gears.
Innovation Solution
A foldable display device with a hinge mechanism using a two-axes hinge structure, incorporating a rotor and follower system that converts rotational motion into linear motion, allowing for symmetrical folding and unfolding without the need for complex gears or springs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If complex driving mechanisms and sophisticated gears are used, then precise folding and unfolding can be achieved, but manufacturing cost increases
Solution Approach 1:
The patent removes complex driving mechanisms and sophisticated gears from the hinge device, extracting only the essential functional elements (rotors and followers) needed to achieve precise folding and unfolding motion control
Solution Approach 2:
The rotor and follower mechanism is designed to automatically convert rotational motion into linear motion without requiring external complex driving mechanisms, allowing the system to self-regulate the folding motion
2Ease of manufacture
If simple hinge structures are used, then manufacturing cost is reduced, but folding precision deteriorates
Solution Approach 1:
The rotor components incorporate curved surfaces that guide the follower's linear motion, ensuring precise folding angles and symmetrical operation while maintaining a relatively simple overall structure
Solution Approach 2:
The follower acts as an intermediary element that converts the rotational motion of the rotors into controlled linear motion, enabling precise folding without requiring complex driving mechanisms
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
This solution enables cost-effective and precise folding/unfolding of display devices by simplifying the hinge mechanism, ensuring symmetrical operation and reducing manufacturing costs.
Implementation Method 1
a follower in contact with the first and second rotors to reciprocate in a first direction by rotation of at least one of the first and second rotors
Data Source
AI summary
A foldable display device includes: a display panel including a foldable display area; a first base plate overlapping a portion of the foldable display area to guide folding of the display panel; a second base plate overlapping another portion of the foldable display area to guide the folding of the display panel together with the first base plate; a first rotor coupled to the first base plate to rotate around a first virtual rotation axis, a second rotor coupled to the second base plate to rotate around a second virtual rotation axis; a follower in contact with the first and second rotors to reciprocate in a first direction by rotation of at least one of the first and second rotors; and a bracket coupled to the first and second rotors to guide a rotation path of each of the first and second rotors.