Patent ID: 6306012
Filing Date: 2001-10-23
Classification: B24B,B24D

Abstract:
A method of planarizing a microelectronic-device substrate assembly, comprising:depositing a lubricating planarizing solution without abrasive particles onto a polishing pad, the polishing pad having a body, a planarizing surface on the body, and a plurality of abrasive particles fixedly attached to the body at the planarizing surface, the lubricating planarizing solution being further comprised of glycerol mixed into a non-abrasive solution comprising, ammonia and water to form a solution having a viscosity of at least approximately 4-20 cp;pressing a front face of the substrate assembly against the lubricating planarizing solution and at least a portion of the fixed abrasive particles on the planarizing surface;moving at least one of the polishing pad or the substrate assembly with respect to the other to impart relative motion therebetween; andseparating regions of the front face from the abrasive particles with the lubricating planarizing solution as the substrate assembly moves relative to the polishing pad.