Patent ID: 8999187
Filing Date: 2015-04-07
Classification: H01L,H03H

Abstract:
1. A method for manufacturing a device on a substrate, the method comprising: forming a layer structure on the substrate; forming an auxiliary layer on the layer structure; forming a planarization layer on the auxiliary layer and on the substrate; exposing the auxiliary layer and the planarization layer to a chemical mechanical polishing process, wherein a top surface of the planarization layer around the auxiliary layer is coplanar with a top surface of the layer structure after the chemical mechanical polishing process, wherein the chemical mechanical polishing process comprises a first removal rate with respect to the planarization layer and a second removal rate with respect to the auxiliary layer, and wherein the first removal rate is greater than the second removal rate; and selectively removing the auxiliary layer to form a substantially planar surface of remaining auxiliary layer or of the layer structure and the planarization layer.