Rotating Base and Sliding Plate Mechanism for Foldable Display Stress Management
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Solution Overview
Problem
Existing foldable display apparatuses face challenges in reducing stress on the display panel when folded, leading to potential damage and limited flexibility.
Innovation Solution
A display apparatus design featuring a first and second base plate that rotate relative to each other, a moving plate that slides along a direction, and a pop-up plate that supports the display panel, with an elastic member and specific geometric configurations to distribute stress and facilitate folding without stretching the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a foldable display apparatus is designed with a flexible display panel, then the portability and flexibility of the device are improved, but stress concentration on the display panel during folding occurs, leading to potential damage
Solution Approach 1:
The display panel is divided into multiple sections: a first display panel portion, a second display panel portion, and a third display panel portion. The folding mechanism is positioned at the third portion, separating the folding stress from the main display areas. This segmentation allows the display to be folded while protecting the primary display regions from stress concentration and damage.
2Volume of moving object
If the display panel is folded to reduce device size, then portability is improved, but the display panel may be stretched or damaged during the folding process
Solution Approach 1:
The folding mechanism incorporates a moving plate that can dynamically adjust its position along the first direction relative to the second base plate. When the display is folded, the moving plate slides to accommodate the changing geometry, preventing stretching of the display panel. This dynamic adjustment ensures the display panel maintains its integrity while the device transitions between folded and unfolded states.
3Device complexity
If a simple folding mechanism is used, then device complexity is reduced, but the ability to protect the display panel from stress and stretching is insufficient
Solution Approach 1:
A pop-up plate is introduced as an intermediary element between the moving plate and the second base plate. The pop-up plate moves along the second direction (thickness direction) in response to the moving plate's movement, providing additional support and stress distribution. This intermediary structure enhances display panel protection without requiring a fundamentally complex folding mechanism, as it works in conjunction with the existing moving plate and base plates.
4Device complexity
If the moving plate is fixed relative to the base plate, then structural simplicity is maintained, but stress cannot be effectively distributed during folding
Solution Approach 1:
The moving plate is designed to slide along the first direction with respect to the second base plate during the folding operation. This dynamic movement allows the moving plate to reposition itself to distribute stresses evenly across the display panel and supporting structures. The sliding capability ensures that stress concentrations are avoided while maintaining a relatively simple structural design without requiring complex active control systems.
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 design reduces stress on the display panel during folding, enhances flexibility, and protects the panel from damage by distributing forces effectively through the sliding and rotating mechanisms.
Implementation Method 1
an elastic member and specific geometric configurations to distribute stress and facilitate folding without stretching the panel
Data Source
AI summary
A display apparatus includes a first base plate, a second base plate coupled to the first base plate to allow the second base plate to be rotated on the basis of a rotation axis between the first base plate and the second base plate, a moving plate coupled to the second base plate and configured to slide along a first direction with respect to the second base plate, a pop-up plate configured to move along a second direction corresponding to a thickness direction of the second base plate on the second base plate in accordance with a movement of the moving plate, and a display panel including a first portion coupled to the first base plate and a second portion coupled to the moving plate.