Patent ID: 9177815
Filing Date: 2015-11-03
Classification: H01L

Abstract:
1. A method of processing a substrate having a first surface and a plurality of recesses disposed within the first surface, comprising: depositing a first material into the plurality of recesses to predominantly fill the plurality of recesses with the first material to a first level below the first surface; depositing a second material different from the first material into the plurality of recesses and atop the substrate to fill the plurality of recesses and to form a layer atop the first surface; and planarizing the second material using a first slurry in a chemical mechanical polishing tool until the first surface is reached; and planarizing the substrate using a second slurry in the chemical mechanical polishing tool until the first level is reached, wherein the second slurry is different than the first slurry; wherein the first material comprises a semiconductor alloy.