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:
Oct. 15, 2002
Filed:
Mar. 23, 2001
Eric E. Vogt, Minneapolis, MN (US);
Cheisen J. Yue, Roseville, MN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A method is provided to form a LOCOS isolation in a CMOS SOI device. The SOI has a top silicon layer, a bottom silicon layer, and an insulation layer between the top and bottom silicon layers. An oxide layer is formed over the top silicon layer, and an LPCVD layer is deposited over the oxide layer. A photoresist is provided over the LPCVD layer that exposes a localized area of the LPCVD layer. The LPCVD layer and the oxide layer are etched away through the localized area to expose the top silicon layer. The silicon in the top silicon layer is etched so as to form a recess in the top silicon layer. The photoresist is removed and an isolation oxide is grown over the silicon in the recess so that the silicon in the recess is fully oxidized.