公开(公告)号：US20180046089A1

公开(公告)日：2018-02-15

申请号：US15790287

申请日：2017-10-23

申请人： ASML NETHERLANDS B.V.

发明人： Bob STREEFKERK ,  Johannes Jacobus Matheus BASELMANS ,  Henrikus Herman Marie COX ,  Antonius Theodorus Anna Maria DERKSEN ,  Sjoerd Nicolaas Lambertus DONDERS ,  Christiaan Alexander HOOGENDAM ,  Joeri LOF ,  Erik Roelof LOOPSTRA ,  Jeroen Johannes Sophia Maria MERTENS ,  Frits VAN DER MEDLEN ,  Johannes Catharinus Hubertus MULKENS ,  Gerardus Petrus Matthijs VAN NUNEN ,  Klaus SIMON ,  Bernardus Antonius SLAGHEKKE ,  Alexander STRAAIJER ,  Jan-Gerard Cornelis VAN DER TOORN ,  Martijn HOUKES

IPC分类号： G03F7/20

CPC分类号： G03F7/70341 ,  G03F7/70425 ,  G03F7/70525 ,  G03F7/709

摘要： In a lithographic apparatus, a localized area of the substrate surface under a projection system is immersed in liquid. The height of a liquid supply system above the surface of the substrate can be varied using actuators. A control system uses feedforward or feedback control with input of the surface height of the substrate to maintain the liquid supply system at a predetermined height above the surface of the substrate.