Patent ID: 9195150
Filing Date: 2015-11-24
Classification: G03F,H01L

Abstract:
1. A lithographic apparatus comprising a support for holding an object, wherein: the support has a first part with a first upper main surface facing the object when the support is holding the object; the support has a second part with a second upper main surface facing a first bottom main surface of the first part; the second upper main surface and the first bottom main surface are spaced apart from each other by means of multiple discrete support walls; the support has a plurality of burls extending from the first upper main surface; a first one of the plurality of burls has a first top surface operative to contact the object when the support is holding the object; a second one of the plurality of burls has a second top surface operative to contact the object when the support is holding the object; the first top surface has a first position relative to the second upper main surface and has a first orientation relative to the second main surface; the second top surface has a second position relative to the second upper main surface and has a second orientation relative to the second upper main surface; the lithographic apparatus comprises a controller that is configured to perform at least one of: