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:
Jun. 23, 2009
Filed:
Feb. 24, 2006
Katsuhiro Iwasaki, Shizuoka, JP;
Hiromitsu Umezawa, Aichi, JP;
Katsuhiro Iwasaki, Shizuoka, JP;
Hiromitsu Umezawa, Aichi, JP;
FDK Corporation, Tokyo, JP;
Abstract
A magneto-optical device is provided with a non-magnetic substrate, a magneto-optical crystal embedded in recessed portions formed in the surface of the non-magnetic substrate at positions where pixels are to be located, and a partitioning wall monolithic with the non-magnetic substrate and magnetically separating the magneto-optical crystal from each other at the position of a gap between the pixels, wherein the entire surface of the magneto-optical device is flattened. A method for manufacturing a magneto-optical device includes a digging down step, executed at positions where pixels are to be located, of digging down into the surface of a non-magnetic substrate in advance at the positions where the pixels are to be formed, so that a gap portion located between the pixels and around the dug areas remains to form a partitioning wall, a magnetic film forming step of forming a film made of a magneto-optical crystal over substantially the entire surface of the non-magnetic substrate, and a surface flattening step of performing flattening by removing a protruded portion formed by the magnetic film that has grown on the gap portion.