Stretchable Electronic Skin With Segmented Support Patterns
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Solution Overview
Problem
Current technologies lack the capability to effectively replicate the tactile sensing and stimulation transmission of human skin, which is essential for various industrial and medical applications, including AR/VR, bio-diagnosis, and healthcare, as they fail to integrate tactile sensors and actuators into a stretchable electronic skin that mimics human sensory receptors.
Innovation Solution
The development of stretchable electronics that include a substrate with support patterns and output/input devices, where the support patterns are made of rigid material and protrude from the substrate, allowing for the transmission of tactile stimulation through actuators and diaphragms, and the integration of input/output signal control units to manage position and intensity information of stimulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If rigid support patterns are used to support output devices, then structural stability and sensor positioning are improved, but flexibility and stretchability of the electronic skin deteriorate
Solution Approach 1:
The support patterns are segmented into discrete protruding structures distributed across the substrate, with each pattern supporting individual output devices. This segmentation allows the rigid support elements to maintain local stability while the overall flexible substrate can still deform globally, resolving the contradiction between structural stability and flexibility.
2Measurement precision
If multiple support patterns are arranged in parallel directions, then sensor array density and tactile resolution are improved, but device complexity and fabrication difficulty increase
Solution Approach 1:
The support patterns serve multiple functions: they provide mechanical support for output devices, act as positioning templates for sensor arrays, and serve as structural elements for the flexible substrate. This multi-functionality reduces the need for separate components, thereby reducing device complexity while maintaining high tactile resolution through the parallel arrangement of support patterns.
3Adaptability or versatility
If the substrate is made highly stretchable, then conformability to skin and wearability are improved, but structural integrity and device reliability deteriorate
Solution Approach 1:
The electronic skin employs a composite structure combining a highly stretchable flexible substrate with rigid support patterns and encapsulated output devices. The flexible substrate provides conformability to skin, while the rigid support patterns maintain structural integrity during deformation, and the encapsulation protects devices from mechanical stress, thereby achieving both high conformability and reliable structural integrity.
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
This solution enables efficient sensing and transmission of tactile information, enhancing the resolution and efficiency of sensory feedback in stretchable electronics, improving their applicability in diverse fields by mimicking human skin's sensory capabilities.
Implementation Method 1
actuators disposed on the first support patterns; and a diaphragm disposed on the actuators, wherein the diaphragm may be spaced apart from the first support patterns by the actuators, and the diaphragm may vibrate by movement of the actuators
Data Source
AI summary
Provided is stretchable electronics. The stretchable electronics includes stretchable substrate, first support patterns disposed on a first surface of the stretchable substrate, and output devices disposed on the first patterns, respectively. The first support patterns are arranged in a first direction and a second direction, which are parallel to an extension direction of the substrate, and each of the output devices generates an output stimulation.