Abstract: The present disclosure provides a concentrate for use in chemical mechanical polishing slurries, and a method of diluting that concentrate to a point of use slurry. The concentrate comprises abrasive, complexing agent, and corrosion inhibitor, and the concentrate is diluted with water and oxidizer. These components are present in amounts such that the concentrate can be diluted at very high dilution ratios, without affecting the polishing performance.
Type:
Grant
Filed:
October 16, 2009
Date of Patent:
June 5, 2012
Assignee:
Fujifilm Planar Solutions, LLC
Inventors:
Hyungjun Kim, Richard Wen, Bin Hu, Minae Tanaka, Deepak Mahulikar
Abstract: A continuous CMP process for polishing multiple conductive and non-conductive layers on a semiconductor substrate. The continuous process comprises the steps of: (a) disposing a substrate on a platen; (b) polishing a first layer using both a mechanical means and a chemical means; and (c) polishing a second layer upon adjusting at least one parameter in either the mechanical means, chemical means, or both.
Abstract: The invention relates to a novel CMP slurry composition used for polishing metals, the composition comprising: (a) a dispersion solution comprising an abrasive; and (b) an oxidizer. The slurry composition has a large particle count of less than about 150,000 particles having a particle size greater than 0.5 &mgr;m in 30 &mgr;L of slurry, which is achieved by filtering the slurry composition prior to use. Also, the inclusion of a chemical activity enhancer, such as, an amine and a corrosion inhibitor, results in the appropriate copper removal rate without increasing static etch rates.
Type:
Grant
Filed:
October 9, 2002
Date of Patent:
June 15, 2004
Assignee:
Planar Solutions LLC
Inventors:
Anthony Mark Pasqualoni, Deepak Mahulikar, Larry A. LaFollette, Richard J. Jenkins