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. 22, 2007
Filed:
Dec. 15, 2005
Shaestagir Chowdhury, Beaverton, OR (US);
Matthew R. Bauer, Hillsboro, OR (US);
Jeff Grunes, Aloha, OR (US);
Soley Ozer, Portland, OR (US);
Shaestagir Chowdhury, Beaverton, OR (US);
Matthew R. Bauer, Hillsboro, OR (US);
Jeff Grunes, Aloha, OR (US);
Soley Ozer, Portland, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
An electroless plating bath for filling high aspect ratio features with copper metal comprises water, a water soluble copper containing compound having an initial concentration of 0.5 to 50 g/L, a catalyst reducing agent having an initial concentration of 0.02 to 1.5 g/L, a bulk reducing agent having an initial concentration of 2.37 to 29.7 g/L, a buffering agent having an initial concentration of 25 to 100 g/L, a grain refining additive having an initial concentration of 0.25 to 5.0 g/L, a bath stabilizing agent having an initial concentration of 0.02 to 0.1 g/L, and a rate controlling additive having an initial concentration of 0.01 to 0.5 g/L. The catalyst reducing agent may comprise glyoxylic acid and the bulk reducing agent may comprise glycolic acid or hypophosphite.