The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 23, 2024

Filed:

Dec. 22, 2021
Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Masahiro Hiraoka, Tokyo, JP;

Hitoshi Saita, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01G 4/33 (2006.01); H01G 4/008 (2006.01); H01G 4/012 (2006.01); H01G 4/10 (2006.01);
U.S. Cl.
CPC ...
H01G 4/33 (2013.01); H01G 4/008 (2013.01); H01G 4/012 (2013.01); H01G 4/10 (2013.01);
Abstract

Disclosed herein is a thin film capacitor that includes a capacitive insulating film having first and second surfaces opposite to each other, a first capacitive electrode covering the first surface of the capacitive insulating film, and a second capacitive electrode covering the second surface of the capacitive insulating film. The first capacitive electrode is made of less noble metal having a lower spontaneous potential than a metal constituting the second capacitive electrode. A minute defective portion existing in the capacitive insulating film is closed by an insulator derived from a metal constituting the first capacitive electrode.


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