Abstract: An air pulse generating element, disposed in a sound producing device, includes a membrane, disposed within a chamber; and a plurality of valves, disposed by the membrane within the chamber, configured to seal a plurality of openings of the chamber in response to a plurality of valve control signals; wherein the membrane and the plurality of valves are all fabricated at a first layer.
Type:
Grant
Filed:
October 29, 2018
Date of Patent:
June 18, 2019
Assignee:
xMEMS Labs, Inc.
Inventors:
Chiung C. Lo, David Hong, Jemm Yue Liang
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