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:
May. 04, 2004
Filed:
Jun. 15, 2001
Akira Fukunaga, Tokyo, JP;
Kuniaki Horie, Tokyo, JP;
Naoaki Ogure, Tokyo, JP;
Takao Kato, Tokyo, JP;
Akihisa Hongo, Tokyo, JP;
Hiroshi Nagasawa, Tokyo, JP;
Ebara Corporation, Tokyo, JP;
Abstract
The present invention relates particularly to a method of and an apparatus for forming a fine interconnection in a highly integrated circuit formed on a semiconductor substrate. The method has the steps of preparing a substrate having fine recesses formed in a surface thereof, dispersing ultrafine particles made at least partly of a metal in a predetermined solvent, producing an ultrafine particle dispersed liquid, supplying the ultrafine particle dispersed liquid to the fine recesses of the substrate, heating the substrate to melt and bond the metal, and chemical mechanical polishing the surface of the substrate to remove an excessively attached metal therefrom. According to the present invention, it is possible to stably deposit an interconnection metal of good quality using an inexpensive material.