Foldable Display Aspect Ratio Maintenance via Parallel Linkage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Foldable electronic products face aesthetic and viewing discomfort issues due to aspect ratio changes when transitioning from expanded to folded states, failing to maintain an aspect ratio between 1.3 and 2, which affects their aesthetic appeal and user experience.
Innovation Solution
A foldable display device incorporating a parallel linkage mechanism and elastic components that adjust the shell's dimensions to maintain an aspect ratio between 1.3 and 2 in both expanded and folded states, utilizing a shell with pivotable sections and an expandable display to ensure consistent display area and aspect ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the foldable electronic product is folded to decrease its size for portability, then the device becomes more convenient to carry, but the aspect ratio changes and aesthetic appeal deteriorates
Solution Approach 1:
The patent applies the dynamics principle by implementing a parallel linkage mechanism that dynamically adjusts the shell's dimensions. When the device is folded, the linkage mechanism automatically modifies the length and width proportions to maintain the aspect ratio within the aesthetic range of 1.3 to 2, rather than using a fixed rigid structure. This allows the device to adapt its shape in response to folding state changes.
Solution Approach 2:
The patent employs parameter changes by varying the physical dimensions of the shell through the parallel linkage mechanism. Specifically, when folding occurs, the mechanism changes the length (L1 to L4) and width (L2 to L3) parameters such that the ratio between them remains within the aesthetic range. This parameter adjustment ensures that both the device and display screen maintain proper aspect ratios regardless of folding state.
2Area of moving object
If the foldable electronic product is expanded to increase display area, then the display becomes larger, but the aspect ratio may fall outside the aesthetic range
Solution Approach 1:
The parallel linkage mechanism provides dynamic dimensional adjustment that works bidirectionally. When the device is expanded, the mechanism adjusts the shell's length and width to maintain the aspect ratio within 1.3 to 2, ensuring aesthetic appeal is preserved regardless of the expanded display area.
Solution Approach 2:
The patent changes the shell's dimensional parameters (length and width) through the parallel linkage mechanism in response to expansion. By coordinating the change in length (L1 to L4) and width (L2 to L3), the mechanism ensures the aspect ratio remains within the aesthetic range even as the display area increases.
3Ease of manufacture
If a rigid shell structure is used to maintain fixed dimensions, then manufacturing is simpler, but the device cannot adapt aspect ratio when folded or expanded
Solution Approach 1:
The patent applies segmentation by dividing the shell into multiple sections connected by the parallel linkage mechanism. This segmentation allows different parts of the shell to move relative to each other, enabling dimensional adjustment while maintaining manufacturing feasibility through modular construction. The linkage mechanism itself is segmented into multiple linkages that work together to achieve the desired dimensional changes.
Solution Approach 2:
The patent transforms the rigid shell structure into a dynamic one by incorporating the parallel linkage mechanism. This mechanism allows the shell to change its dimensions adaptively when folded or expanded, providing aspect ratio control without requiring complex active control systems, thus balancing adaptability with manufacturing considerations.
Data Source
AI summary
A foldable display device includes a shell. The shell has an expanding state and a folding state. A first direction and a second direction are defined to be orthogonal. When the shell is at the expanding state, the shell has a first length L1 along the first direction and a second length L2 along the second direction. The ratio of the first length L1 to the second length L2 is between 1.3 and 2. When the shell is at the folding state, the shell has a third length L3 along the second direction and a fourth length L4 along the first direction. The ratio of the third length L3 to the fourth length L4 is also between 1.3 and 2.