Flexible Sensing Layout for Deformation Around Protruding Regions
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Solution Overview
Problem
Flexible electronic devices face challenges in protecting sensing units from damage due to deformation caused by protruding units, leading to potential loss of sensing effectiveness and user experience.
Innovation Solution
Designing a flexible electronic device with a deformation region on the substrate that has a specific area ratio to the sensing units, ensuring the sensing units are not easily damaged during deformation, and maintaining effective sensing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible substrate is deformed by the protruding unit to enable flexible display functionality, then the adaptability and user experience are improved, but the sensing units may be damaged and sensing effectiveness is lost
Solution Approach 1:
The sensing layer is divided into multiple independent sensing units, each capable of functioning autonomously. This segmentation ensures that when the flexible substrate deforms, the damage is localized to specific units rather than affecting the entire sensing system, thereby maintaining overall reliability while enabling flexible functionality.
Solution Approach 2:
Different regions of the flexible substrate are designed with different properties - the deformation region allows bending and flexing while the sensing units are positioned and sized to maintain their functional integrity. This local differentiation enables the substrate to be flexible where needed while protecting sensing capabilities in critical areas.
2Ease of operation
If the area of the deformation region is increased to improve flexibility, then the ease of operation is improved, but the sensing units become more susceptible to damage
Solution Approach 1:
The deformation region is designed to cover only the necessary area for flexible operation, while the sensing units are positioned strategically within or adjacent to this region. By applying deformation partially rather than uniformly across the entire substrate, the system achieves sufficient flexibility while minimizing stress exposure to sensing units.
Solution Approach 2:
The flexible substrate itself acts as an intermediary between the protruding unit (which causes deformation) and the sensing units. By carefully designing the substrate's mechanical properties and the deformation region's characteristics, the substrate mediates the stress distribution to protect sensing units while still enabling the desired flexible behavior.
3Measurement precision
If the sensing units are made larger to improve sensing coverage, then the measurement precision is improved, but they become more vulnerable to deformation damage
Solution Approach 1:
Rather than using fewer large sensing units, the system employs multiple smaller sensing units that collectively provide sufficient measurement precision and coverage. This segmentation approach reduces the vulnerability of each individual unit to deformation damage while maintaining overall sensing effectiveness through the combined output of multiple units.
Solution Approach 2:
The system optimizes the size parameter of sensing units to find the optimal balance between sensing coverage and deformation resistance. By carefully selecting the dimensions of sensing units and their spacing, the system achieves adequate measurement precision while minimizing the area exposed to deformation stress.
Data Source
AI summary
A flexible electronic device is disclosed. The flexible electronic device includes a protruding unit, a flexible substrate and a plurality of sensing units. The flexible substrate is disposed on the protruding unit and has a deformation region corresponding to the protruding unit. The sensing units are disposed on the flexible substrate, and at least one of the sensing units is overlapped with the deformation region. A ratio of an area of the deformation region to an area of one of the at least one of the sensing units is greater than or equal to 1.4 and less than or equal to 2222.