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Three-Dimensional Touch Device with Two Terminals.
Youngjun Cho1,2,3, Taehoon Kim1,2, Gwangmook Kim1,2
1Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea.
Advanced Materials (Deerfield Beach, Fla.)
|August 24, 2023
Summary
This study introduces a novel method using two electrodes to pinpoint multiple positions, simplifying device wiring and fabrication. This innovation enables precise 3D coordinate determination, revolutionizing input device design.
Area of Science:
- Materials Science
- Electrical Engineering
- Device Physics
Background:
- Crossbar arrays are crucial for device operation but present wiring complexities for numerous electrodes.
- Addressing many positions in crossbar arrays leads to significant challenges in wiring and fabrication.
Purpose of the Study:
- To propose a simplified method for determining multiple positions using only two electrodes.
- To demonstrate a novel approach for simplifying input device architectures.
Main Methods:
- Utilizing resistance changes with distance to determine coordinates.
- Analyzing resistance variations based on electrode composition.
- Measuring capacitance fluctuations due to dielectric thickness changes.
- Employing two-terminal transparent electrodes for device fabrication.
Main Results:
- Successfully determined x-y-z coordinates without defining node locations.
- Demonstrated a simplified wiring and device fabrication process.
- Fabricated a fully functional 3D touch device.
Conclusions:
- The proposed two-electrode method significantly simplifies the determination of multiple positions.
- This approach offers a groundbreaking method for simplifying input device architectures.
- The successful fabrication of a 3D touch device validates the proposed methodology.
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