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:
Apr. 13, 2004
Filed:
Jul. 11, 2001
Yoshiteru Ono, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A semiconductor integrated circuit is provided in which the transistor size can be minimized by only changing one mask after the performance of a prototype is tested. Impurity regions are formed in predetermined regions (formed of portions surrounded by solid lines and portions surrounded by broken lines) surrounded by a field insulating film on a semiconductor substrate for prototyping, and a prototype semiconductor integrated circuit is thereby manufactured, and then testing is performed. When the prototype semiconductor integrated circuit operates in a desired manner, impurity regions are formed in predetermined regions (formed of portions surrounded by solid lines only) surrounded by a field insulating film on a semiconductor substrate for shipment, and a semiconductor integrated circuit for shipment is thereby manufactured.