US 12,477,950 B2
Electromechanical actuator having ceramic insulation and method for production thereof
Kevin Speer, Mörsdorf (DE); and Benjamin Dargatz, Jena (DE)
Assigned to PI CERAMIC GMBH, Lederhose (DE)
Appl. No. 17/606,327
Filed by PI Ceramic GmbH, Lederhose (DE)
PCT Filed Apr. 7, 2020, PCT No. PCT/EP2020/059887
§ 371(c)(1), (2) Date Oct. 25, 2021,
PCT Pub. No. WO2020/216612, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 10 2019 206 018.8 (DE), filed on Apr. 26, 2019.
Prior Publication US 2022/0231217 A1, Jul. 21, 2022
Int. Cl. H01L 41/053 (2006.01); H10N 30/02 (2023.01); H10N 30/06 (2023.01); H10N 30/20 (2023.01); H10N 30/87 (2023.01); H10N 30/88 (2023.01)
CPC H10N 30/883 (2023.02) [H10N 30/02 (2023.02); H10N 30/06 (2023.02); H10N 30/20 (2023.02); H10N 30/87 (2023.02)] 11 Claims
OG exemplary drawing
 
1. Electromechanical actuator comprising:
a stack arrangement made of ceramic basis material having electromechanical properties;
electrodes; and
a ceramic insulation configured for operation of said actuator in a humid environment, wherein a structure of said ceramic insulation has a smaller average grain size than a structure of said ceramic basis material;
where said ceramic basis material and said electrodes are arranged along a stack axis and said stack arrangement comprises:
two end faces aligned perpendicular to said stack axis and at least one side surface extending between said end faces, where said ceramic insulation on said at least one side surface extends from one end face to the other end face.