Variable Display Device With Hinged Joint Plate
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Solution Overview
Problem
Current display devices lack the ability to seamlessly transition between flat and curved modes, limiting their versatility and user experience in terms of immersion and space utilization.
Innovation Solution
A variable display device with a joint plate and driving system that allows the display panel to switch between flat and curved modes by rotating multiple plates using a hinge mechanism, driven by a motor and eccentric cam system, enabling precise curvature and flat alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display device is designed to be fixed in either flat or curved mode, then the structural simplicity is maintained, but the versatility and adaptability are limited
Solution Approach 1:
The display device employs a joint plate composed of multiple rotatable sub-plates connected by hinges, allowing the structure to dynamically change its curvature state. The driving system with motors and eccentric cams actuates these hinges to transition between flat and curved modes, transforming a static structure into a dynamic one that can adapt to different display requirements
Solution Approach 2:
The joint plate is segmented into multiple sub-plates that can rotate independently relative to each other through hinge connections. This segmentation allows each sub-plate to contribute to the overall curvature change, enabling smooth transitions between flat and curved states while distributing the mechanical stress across multiple joints
2Shape
If multiple plates are rotated with increasing rotational angles from center to edge, then the curved mode with high immersion is achieved, but the manufacturing precision and alignment difficulty increase
Solution Approach 1:
The rotational angle is not uniform across all plates but varies locally based on position. Plates closer to the center have smaller rotational angles while plates at the edges have larger rotational angles. This local variation in rotational angle creates the desired curved surface profile while allowing each joint to be manufactured and assembled within feasible precision tolerances
3Ease of operation
If the display device transitions between flat and curved modes, then the user experience and immersion are enhanced, but vibrations and noise during transition increase
Solution Approach 1:
The mode transition is achieved through periodic rotation of the eccentric cams, which in turn periodically actuate the hinges to rotate the sub-plates. This periodic mechanical action allows for controlled, gradual transitions between modes rather than abrupt changes, reducing impulsive vibrations and noise generation during mode switching
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
Enables users to select between flat and curved modes based on occasion, enhancing immersion and comfort while maintaining wide viewing angles and reducing vibrations or noise during mode transitions.
Implementation Method 1
a joint plate installed at a rear surface of the display panel and including a plurality of plates each configured to be rotated by a hinge
Implementation Method 2
a driving system installed at a rear surface of the joint plate and rotating the plurality of plates with respect to a normal direction to the joint plate
Data Source
AI summary
A variable display device includes a display panel; a joint plate installed at a rear surface of the display panel and including a plurality of plates each configured to be rotated by a hinge; and a driving system installed at a rear surface of the joint plate and rotating the plurality of plates with respect to a normal direction to the joint plate, wherein the display panel is variably driven in a flat mode having a flat surface or a curved mode having a curved surface by the joint plate and the driving system.