Wearable Device Strip Substrate Dynamic Shape Transformation
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Solution Overview
Problem
Conventional wearable devices have small screens, which are inconvenient for user operations and limit their functional development due to their compact size.
Innovation Solution
A wearable device featuring a strip-shaped substrate with a flexible display panel and cover plate that can change from a bent arc or annular shape to an elongated shape when subjected to external forces, providing a larger screen area by stretching the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the wearable device uses a compact small screen design, then the device size remains small and portable, but the screen area is limited making user operations inconvenient
Solution Approach 1:
The substrate is designed to be flexible and capable of dynamic shape transformation between bent and stretched states. This allows the display area to change dynamically based on user needs, resolving the contradiction between small device size and large screen area by enabling the screen to expand when required while maintaining compact form when not in use
Solution Approach 2:
The physical parameters of the substrate (shape, curvature radius, length) are changed between bent and stretched states. By altering the curvature radius from a small value in bent state to a large value in stretched state, the display area increases significantly while the device remains portable, thus resolving the area-length contradiction
2Length of moving object
If the wearable device is bent into arc or annular shape, then the device becomes compact and portable, but the screen area decreases
Solution Approach 1:
The device transitions dynamically between bent compact state and stretched extended state. The flexible substrate and display panel work together to maintain functionality in both states, allowing users to switch between portability mode (bent) and usage mode (stretched) to resolve the contradiction between compactness and screen area
Solution Approach 2:
When bent into annular shape, the display panel is effectively nested within the curved configuration, allowing the device to occupy less linear space while preserving the display surface area. The nesting effect enables compact storage without permanently reducing the functional screen area
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 the wearable device to transform from a compact bent state to a stretched state, offering a larger screen for improved user interaction and functionality.
Implementation Method 1
the strip-shaped substrate is bent from the elongated shape to the arc shape or the annular shape when the strip-shaped substrate is subjected to a first external force
Implementation Method 2
the strip-shaped substrate is stretched from the arc shape or the annular shape to the elongated shape when the strip-shaped substrate is subjected to a second external force
Data Source
AI summary
A wearable device includes a strip-shaped substrate, a flexible display panel disposed on the strip-shaped substrate, and a flexible cover plate disposed on the flexible display panel. The wearable device can return from a bent state to a stretched state, so as to provide a user with a larger screen.