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:
Aug. 16, 2011
Filed:
Sep. 22, 2004
Applicants:
Koichi Watanabe, Yokohama, JP;
Yukinobu Suzuki, Kanagawa-ken, JP;
Takashi Ishigami, Yokohama, JP;
Inventors:
Assignees:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Materials Co., Ltd., Yokohama-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C 14/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A Si sputtering target that in the measurement of crystal face orientation of sputtering surface according to X-ray diffractometry, exhibits a ratio of peak intensity of (111) face (I) to peak intensity of (220) face (I) of Si, (I/I), falling within the range of 1.8±0.3. The Si sputtering target comprises, for example, an Si sintered material of 70 to 95% relative density. With respect to sputtering films such as Si oxide film, the film thickness characteristics, film formation cost, etc. can be improved by the use of this Si sputtering target.