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CERAMIC-WOUND-CAPACITOR WITH LEAD LANTHANUM ZIRCONIUM TITANATE DIELECTRIC

United States Patent Application

20170301472
A1
View the Complete Application at the US Patent & Trademark Office
A ceramic-wound-capacitor includes a first-electrically-conductive-layer, a dielectric-layer, a second-electrically-conductive-layer, and a protective-coating. The dielectric-layer is formed of lead-lanthanum-zirconium-titanate (PLZT). The protective-coating has a thickness of less than ten micrometers (10 .mu.m) and provides electrical isolation between the first-electrically-conductive-layer and the second-electrically-conductive-layer of the ceramic-wound-capacitor. A method for fabricating the ceramic-wound-capacitor includes the steps of feeding a carrier-strip, depositing a sacrificial layer, depositing a first-electrically-conductive-layer, depositing a dielectric-layer, and depositing a second-electrically-conductive-layer to form an arrangement coupled to the carrier-strip by the sacrificial-layer, separating the arrangement from the carrier-strip and sacrificial-layer, creating an exposed-surface of the first-electrically-conductive-layer, applying a protective-coating to the exposed-surface of the first-electrically-conductive-layer, winding the arrangement with the protective-coating to form a ceramic-wound-capacitor, where the protective-coating is in direct contact with the first-electrically-conductive-layer and the second-electrically-conductive-layer of the ceramic-wound-capacitor.
Fairchild, Manuel Ray (Kokomo, IN), Taylor, Ralph S. (Noblesville, IN), Ihms, David W. (Russiaville, IN), Wong, Celine Wk (Kokomo, IN)
15/ 447,857
March 2, 2017
GOVERNMENT LICENSE RIGHTS STATEMENT [0002] This is an invention jointly developed by Argonne National Lab and Delphi Automotive System, LLC. The United States Government has rights in this invention pursuant to Contract No. DE-AC02-06CH11357 between the United States Government and UChicago Argonne, LLC representing Argonne National Laboratory and pursuant to Sub Contract No. 4F-31041 between the United States Government/Department of Energy (Argonne National Laboratory) and Delphi Automotive Systems, LLC.