US 11,838,708 B2
Non-planar ingress protection element for a sensor device
John J Albers, Chicago, IL (US)
Assigned to KNOWLES ELECTRONICS, LLC, Itasca, IL (US)
Appl. No. 17/602,091
Filed by Knowles Electronics, LLC, Itasca, IL (US)
PCT Filed Apr. 3, 2020, PCT No. PCT/US2020/026734
§ 371(c)(1), (2) Date Oct. 7, 2021,
PCT Pub. No. WO2020/210134, PCT Pub. Date Oct. 15, 2020.
Claims priority of provisional application 62/832,175, filed on Apr. 10, 2019.
Prior Publication US 2022/0150609 A1, May 12, 2022
Int. Cl. H04R 1/02 (2006.01); B81B 7/00 (2006.01)
CPC H04R 1/02 (2013.01) [B81B 7/0032 (2013.01); B81B 2201/0271 (2013.01); B81B 2203/019 (2013.01); H04R 2201/003 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A sensor comprising:
a substrate having a first surface and an opposing second surface, the substrate defining a port that extends between the first surface and the second surface;
a microelectromechanical systems (MEMS) transducer disposed on the first surface of the substrate over the port;
in integrated circuit (IC);
a cover disposed on the substrate covering the MEMS transducer and the IC; and
an ingress protection element positioned to cover the port, the ingress protection element comprising a third surface facing an environment outside the sensor, a fourth opposite facing surface, a perimeter of the third surface, and a thickness defined between the third and fourth surfaces, wherein the perimeter lies within a plane, and at least a portion of the third surface does not lie within the plane.
 
12. A sensor comprising:
a substrate;
a microelectromechanical systems (MEMS) transducer;
an integrated circuit (IC);
a cover disposed on the substrate covering the MEMS transducer and the IC, the cover having a first surface and a second surface, the cover defining a port that extends between the first surface and the second surface; and
an ingress protection element positioned to cover the port, the ingress protection element comprising a third surface facing an environment outside the sensor, a fourth opposite facing surface, a perimeter of the third surface, and a thickness defined between the third and fourth surfaces, wherein the perimeter lies within a plane, and at least a portion of the third surface does not lie within the plane.