| US 7,468,573 B2 | ||
| Method of providing tactile feedback | ||
| Steve X. Dai, Gilbert, Ariz. (US); and Daniel J. Sadler, Gilbert, Ariz. (US) | ||
| Assigned to Motorola, Inc., Schaumburg, Ill. (US) | ||
| Filed on Oct. 30, 2006, as Appl. No. 11/590,275. | ||
| Prior Publication US 2008/0100177 A1, May 01, 2008 | ||
| Int. Cl. H01L 41/00 (2006.01) | ||
| U.S. Cl. 310—317 [310/331; 341/20; 341/27] | 22 Claims |
| 1. A method of providing haptic feedback to an input device of an electronic device, comprising:
providing a voltage waveform to activate one or more piezoelectric actuators, the waveform comprising at least two pulses
within a 20 millisecond duration; and
moving the input device in response to the piezoelectric actuators being activated.
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