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:
Feb. 26, 2013
Filed:
Feb. 12, 2009
Kazutaka Habu, Tokyo, JP;
Masayoshi Kanno, Kanagawa, JP;
Toshiaki Yokota, Miyagi, JP;
Makoto Watanabe, Miyagi, JP;
Kazutaka Habu, Tokyo, JP;
Masayoshi Kanno, Kanagawa, JP;
Toshiaki Yokota, Miyagi, JP;
Makoto Watanabe, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
A variable capacitor and a control method thereof capable of responding to applications of electronic apparatuses including various electronic devices and communication mobile devices. The variable capacitor includes a pair of electrodes formed so as to sandwich a ferroelectric material layer, in which polarization processing higher than a coercive field in hysteresis characteristics of polarization has been performed to the ferroelectric material layer, and the capacitance can be varied in accordance with a control voltage applied to the electrodes.