Gao, S;
Arcos, V;
Nathan, A;
(2016)
Piezoelectric vs. Capacitive Based Force Sensing in Capacitive Touch Panels.
IEEE Access
, 4
pp. 3769-3774.
10.1109/ACCESS.2016.2591535.
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Abstract
High sensitivity force sensing is a desirable function of capacitance touch screen panels. In this paper, we report on a dynamic force detection technique by utilizing piezoelectric materials. The force-voltage responsivities are investigated for four widely used stack-ups, with various panel thicknesses and touch locations. Based on the theoretical analysis and simulation results, the maximum responsivity and the signal-to-noise ratio are achieved at 0.42 V/N and 59.1 dB, respectively. The proposed technique implements force sensing successfully, enhancing the human-machine interactivity experience.
| Type: | Article |
|---|---|
| Title: | Piezoelectric vs. Capacitive Based Force Sensing in Capacitive Touch Panels |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ACCESS.2016.2591535 |
| Publisher version: | http://doi.org/10.1109/ACCESS.2016.2591535 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Piezoelectric materials, Sensors, Signal to noise ratio, Sensitivity, Capacitance, Voltage measurement, Man-machine interfaces |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1539727 |
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