Patent ID: 6017463
Filing Date: 2000-01-25
Classification: B24B,C09G,C09K,H01L

Abstract:
A method for making a chemical-mechanical polishing (CMP) slurry comprising the steps of:providing abrasive particles in an aqueous concentrate having a median particle diameter less than 0.400 microns, said abrasive particles having a solubility coating thereon;blending said abrasive particles in said aqueous concentrate with a suspension agent;then mixing a first component of water with said blended abrasive particles to form an intermediate slurry;combining further ingredients including a ferric oxidizer, a titanium oxidizing agent and a second component of water into said intermediate slurry by flowing together all said further ingredients and said intermediate slurry to form a final slurry flow; anddispensing all said final slurry flow onto a polishing pad in a continuous flow as fast as said final slurry is formed.