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Design Example: Resistive Touchscreen

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Updated: Jun 20, 2026

Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
05:57

Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

Flexible electronics sensors for tactile multiscanning.

Wen-Yang Chang1, Te-Hua Fang, Yu-Tang Shen

  • 1Microsystems Technology Center, Industrial Technology Research Institute, Tainan 709, Taiwan.

The Review of Scientific Instruments
|September 4, 2009
PubMed
Summary
This summary is machine-generated.

This study presents flexible electronic sensors for tactile sensing and large area applications. The developed sensors utilize printed thixotropic materials and an algorithm matrix for efficient multiscanning functions.

Related Experiment Videos

Last Updated: Jun 20, 2026

Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
05:57

Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

Area of Science:

  • Materials Science
  • Electrical Engineering
  • Sensor Technology

Background:

  • Flexible electronics sensors are crucial for tactile sensing and large-area applications.
  • Developing efficient multiscanning capabilities is essential for advanced tactile sensing.
  • Printed electronics offer a pathway for low-cost, large-scale sensor fabrication.

Purpose of the Study:

  • To design and fabricate flexible electronic sensors capable of tactile multiscanning.
  • To develop an algorithm matrix for controlling the multiscanning switch of tactile sensing.
  • To investigate the use of thixotropic materials and specific structural designs for enhanced sensor performance.

Main Methods:

  • Printing thixotropic materials, bumps, and resistance layers onto a polyimide substrate.
  • Incorporating a gap between the top electrode and resistance layers to accommodate bending.
  • Deriving an algorithm matrix for multiscanning switch control.
  • Characterizing transient response, including delay time and stability, of the sensor membrane.

Main Results:

  • The fabricated flexible sensor, featuring a printed resistance layer and algorithm matrix, successfully performed multiscanning functions.
  • Sensors without a bump exhibited a delay time of approximately 0.2 s in transient response.
  • Thixotropic materials with high viscosity effectively reduced diffusion and shrinkage during the printing of thick structures.
  • The printed resistance values showed a probability distribution density of 81.2% within two standard deviations from the mean at a thickness of 23.2 micrometers.

Conclusions:

  • Screen printing is a viable, low-cost technology for fabricating large-area flexible electronic sensors.
  • The developed sensor design and algorithm matrix enable effective tactile multiscanning.
  • The use of high-viscosity thixotropic materials is beneficial for printing thick structures on flexible substrates.
  • The study demonstrates the feasibility of creating advanced flexible tactile sensors for diverse applications.