JOURNAL ARTICLE

Transparent\nPressure Sensor with High Linearity over a Wide Pressure Range for\n3D Touch Screen Applications

Abstract

The\ndemand for display technology is expected to increase with the continuous\nspread of portable electronics and with the expected emergence of\nflexible, wearable, and transparent display devices. A touch screen\nis a critical component in display technology that enables user interface\noperations, and the future generation of touch screens, the so-called\n3D touch screens, is expected to be able to detect multiple levels\nof pressure. To enable 3D touch screens, transparent pressure sensors\nwith high linearity over a working range that encompasses the pressure\nrange of human touch (10–100 kPa) are required. In this work,\na transparent and linear capacitive pressure sensor is reported with\na transmittance over 85% and high linearity (<i>R</i><sup>2</sup> = 0.995) over 5–100 kPa of pressure. To render the\nsensor transparent, a microstructured “hard” elastomer\nlayer was filled in with a refractive index matching a “soft”\nelastomer layer, through which light scattering was minimized. High\nlinearity was attained from the sensor’s unique architecture\nthat increases the effective area of the capacitor with applied pressure.\nThese attributes render our sensor highly suitable for future 3D touch\nscreen applications.

Keywords:
Linearity Capacitive sensing Pressure sensor Capacitor Electronics Tactile sensor Pressure measurement Refractive index

Metrics

0
Cited By
0.00
FWCI (Field Weighted Citation Impact)
0
Refs
0.28
Citation Normalized Percentile
Is in top 1%
Is in top 10%

Topics

Advanced Sensor and Energy Harvesting Materials
Physical Sciences →  Engineering →  Biomedical Engineering
Dielectric materials and actuators
Physical Sciences →  Engineering →  Biomedical Engineering
Thin-Film Transistor Technologies
Physical Sciences →  Engineering →  Electrical and Electronic Engineering

Related Documents

© 2026 ScienceGate Book Chapters — All rights reserved.