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http://dx.doi.org/10.4218/etrij.10.1510.0073

Touchpad for Force and Location Sensing  

Kim, Dong-Ki (Mechanical Metrology Center, KRISS)
Kim, Jong-Ho (Mechanical Metrology Center, KRISS)
Kwon, Hyun-Joon (Mechanical Metrology Center, KRISS)
Kwon, Young-Ha (Department of Mechanical Engineering, Kyung Hee University)
Publication Information
ETRI Journal / v.32, no.5, 2010 , pp. 722-728 More about this Journal
Abstract
This paper presents the design and fabrication model of a touchpad based on a contact-resistance-type force sensor. The touchpad works as a touch input device, which can sense contact location and contact force simultaneously. The touchpad is 40 mm wide and 40 mm long. The touchpad is fabricated by using a simple screen printing technique. The contact location is evaluated by the calibration setup, which has a load cell and three-axis stages. The location error is approximately 4 mm with respect to x-axis and y-axis directions. The force response of the fabricated touchpad is obtained at three points by loading and unloading of the probe. The touchpad can detect loads from 0 N to 2 N. The touchpad shows a hysteresis error rate of about 11% and uniformity error rate of about 3%.
Keywords
Touch input device; touchscreen; touchpad; contact-resistance-type force sensor; contact force; contact location;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 2  (Related Records In Web of Science)
Times Cited By SCOPUS : 5
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