Perceived Strength of Lateral Acceleration Display for Touchscreen Emulation of Mechanical Switch Transients

Authors:
Chris Ullrich;Manuel Cruz
Affiliations:
Immersion Research, USA CA 95131;Immersion Research, USA CA 95131
Venue:
EuroHaptics '08 Proceedings of the 6th international conference on Haptics: Perception, Devices and Scenarios
Year:
2008

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Abstract

A lateral motion touchscreen display can produce satisfying tactile feedback reminiscent of high quality mechanical switches. This study examines the perception of lateral motion acceleration for touchpanel displays for a variety of activation thresholds. A user study directly comparing short, high magnitude normal and lateral accelerations shows that for low accelerations, lateral motion is perceived as slightly weaker than normal, but for high accelerations, lateral acceleration is perceived as stronger than normal acceleration by as much as 40%. The results indicate that for high acceleration, high activation threshold mechanical switches, such as are found in automotive dashboards, lateral motion touchpanels can provide equivalent strength to normal motion displays with significantly less fingertip acceleration.