Patent ID: 8709270
Filing Date: 2014-04-29
Classification: B01J,C23C,C40B,H01J,H01L

Abstract:
1. A method for processing a substrate, comprising: receiving a substrate onto a stationary substrate support; positioning a first mask over and spaced apart from a surface of the substrate, wherein the first mask is characterized by a first central axis, the first mask having a first set of apertures extending through the first mask, wherein the first set of apertures is radially disposed about a first axis parallel to and offset from the first central axis; positioning a second mask over a surface of the first mask, wherein the second mask is characterized by a second central axis collinear with the first central axis, the second mask having a second set of apertures extending through the second mask, wherein the second set of apertures is radially disposed about a second axis parallel to and offset from the second central axis; processing a first region of the surface of the substrate, the first region defined by one of the first set of apertures and one of the second set of apertures; rotating one of the first mask or the second mask around the first or second central axis; and processing a second region of the substrate, the processing of the second region of the substrate having a varied processing parameter as compared to the processing of the first region; wherein the first and second regions are non-overlapping.