US 11,941,974 B2
Systems, methods, and devices for haptic feedback
Rakesh Sethi, San Jose, CA (US)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK Corporation, Tokyo (JP)
Filed on Jul. 20, 2022, as Appl. No. 17/869,078.
Prior Publication US 2024/0029528 A1, Jan. 25, 2024
Int. Cl. H04B 3/36 (2006.01); G08B 6/00 (2006.01)
CPC G08B 6/00 (2013.01) 21 Claims
OG exemplary drawing
 
13. A device, comprising:
a substrate having a first layer and a second layer; and
a plurality of electrically-connected microfluidic devices embedded within the first and second layers of the substrate, each microfluidic device of the plurality of electrically-connected microfluidic devices being individually activated based on an activation signal and including:
an inlet port for supplying a fluid into the respective microfluidic device;
a tube for receiving the fluid from the inlet port; and
a piezoelectric actuator for controlling an amount of the fluid supplied to the tube via the inlet port based on the activation signal to realize a displacement of a portion of the first layer or the second layer of the substrate, the portion corresponding to an area of the substrate where the respective microfluidic device is arranged and the displacement being based on the amount of the fluid or a pressure in the tube.