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.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Oct. 11, 2022
Tdk Corporation, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
A variable capacitor includes: a first conductive layer; a second conductive layer; and a capacitance layer sandwiched between the first conductive layer and the second conductive layer. Each of the first conductive layer and the second conductive layer is a ferromagnetic layer containing a ferromagnetic material. The first conductive layer has a first magnetic domain and a second magnetic domain having magnetization oriented in a direction different from the first magnetic domain. In the variable capacitor, a domain wall which is a boundary between the first magnetic domain and the second magnetic domain is configured to be movable within at least an area of the first conductive layer overlapping the capacitance layer in a laminating direction in a first direction within a plane of the first conductive layer.