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:
Dec. 12, 2000
Filed:
Jan. 22, 1999
Susan Chen, Santa Clara, CA (US);
Judi Quan Rizzuto, Los Gatos, CA (US);
Anne E Sanderfer, Campbell, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A method of manufacturing a semiconductor wafer wherein a layer of hardmask material is formed on the surface of a metal layer formed on a layer of interlayer dielectric formed on a semiconductor substrate on and in which active devices have been formed. A layer of photoresist is formed on the surface of the layer of hardmask material, patterned and developed exposing portions of the underlying layer of hardmask material. The semiconductor wafer is placed in an etched and the layer of hardmask material is etched in a first process utilizing a combination fluorine and chlorine chemistry and the metal layer is etched in a second process utilizing a combination fluorine and chlorine chemistry.