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. 05, 1999
Filed:
Jun. 07, 1995
Yoshiyuki Enomoto, Kanagawa, JP;
Hiroshi Sata, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
To provide a method for producing the semiconductor device in which contactability between a dielectric layer and a contact layer is not reduced during the formation of a metal plug, the method comprises forming a semiconductor device including a base; forming a lower conductive layer on the base; forming a dielectric layer formed on the lower conductive layer; forming an opening in the dielectric layer for electrically connecting the lower conductive layer with an upper conductive layer to be formed on the dielectric layer; forming a first contact layer formed on at least a bottom surface of the via hole and made of a single TiON layer, any portions of said first contact layer formed on the dielectric layer being removed; forming a second contact layer over an entire exposed surface of the first contact layer, depositing tungsten on the second contact layer by a chemical vapor deposition method; and removing portions of the second contact layer formed on the dielectric layer while leaving a tungsten plug and the first and second contact layers within the opening to form a via hole contact.