Patent ID: 7276446
Filing Date: 2007-10-02
Classification: B24B,H01L

Abstract:
1. A method of planarizing a microelectronic-device, substrate assembly comprising: dispensing a first plananzing solution onto a polishing pad, the first solution including a plurality of first abrasive particles having a first planarizing attribute defined by a first particle size distribution having a first mean particle size; removing material from a first portion of the substrate assembly using the first abrasive particles; dispensing a second planarizing solution onto the polishing pad, the second solution including a plurality of second abrasive particles having a second planarizing attribute defined by a second particle size distribution having a second mean particle size, the second mean particle size being substantially larger than the first mean particle size; and removing material from a second portion of the substrate assembly using the second abrasive particles; wherein the first portion has a topological surface and the second portion has an approximately planar surface exposed upon removal of the first portion.