TACTILE DISPLAY DRIVEN BY SURFACE ACOUSTIC WAVES

摘要

Described embodiments include a system and a method. A system includes an ultrasound transmitter acoustically coupled to an ultrasound-conducting layer of a display surface and configured to deliver a down-modulated ultrasound wave to a first delineated area of at least two delineated areas of the display surface. The down-modulated ultrasound wave when delivered having a power density producing a stress pattern directly perceivable or discernible by a human appendage touching the first delineated area. The system includes a controller configured to initiate a delivery of the down-modulated ultrasound wave to the first delineated area by the ultrasound transmitter in response to an indication of a detected touch by the human appendage to at least a portion of the first delineated area.