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. 21, 2007
Filed:
Apr. 29, 2004
Yinon Degani, Highland Park, NJ (US);
Maureen Y. Lau, Warren, NJ (US);
King Lien Tai, Berkeley Heights, NJ (US);
Yinon Degani, Highland Park, NJ (US);
Maureen Y. Lau, Warren, NJ (US);
King Lien Tai, Berkeley Heights, NJ (US);
Sychip Inc., Plano, TX (US);
Abstract
The specification describes an integrated passive device (IPD) that is formed on a polysilicon substrate. A method for making the IPD is disclosed wherein the polysilicon substrate is produced starting with a single crystal handle wafer, depositing a thick substrate layer of polysilicon on one or both sides of the starting wafer, forming the IPD on one of the polysilicon substrate layers, and removing the handle wafer. In a preferred embodiment the single crystal silicon handle wafer is a silicon wafer rejected from a single crystal silicon wafer production line.