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:
Mar. 11, 2014
Filed:
Apr. 22, 2011
Futoshi Yamamoto, Tokyo, JP;
Junichiro Ichikawa, Tokyo, JP;
Satoshi Oikawa, Tokyo, JP;
Sunao Kurimura, Ibaraki, JP;
Kenji Kitamura, Ibaraki, JP;
Futoshi Yamamoto, Tokyo, JP;
Junichiro Ichikawa, Tokyo, JP;
Satoshi Oikawa, Tokyo, JP;
Sunao Kurimura, Ibaraki, JP;
Kenji Kitamura, Ibaraki, JP;
Sumitomo Osaka Cement Co., Ltd., Chiyoda-ku, Tokyo, JP;
National Institute for Materials Science, Tsukuba, Ibaraki, JP;
Abstract
A method for forming a ferroelectric spontaneous polarization reversal in a desired region of a ferroelectric substrate includes the steps of forming, for the desired region of the surface of the ferroelectric substrate, an electrode pattern or a mask pattern composed of aggregates of micropatterns, and then applying a given voltage into the desired region. The configuration of the micropatterns can be a stripe-shaped pattern, an ellipse-shaped pattern, a hexagon-shaped pattern, a network pattern, or a double cross shaped pattern. The method can further include the steps of generating many nucleuses by using the electrode pattern or the mask pattern composed of the aggregates of micropatterns, forming another electrode pattern or another mask pattern corresponding to the desired region, and then applying a given voltage into the desired region to generate a ferroelectric spontaneous polarization reversal around the nucleuses.