发明申请
US20080158538A1 Lithographic apparatus, substrate table, and method for enhancing substrate release properties 有权
平版印刷装置,基板台,以及增强基板剥离性能的方法

Lithographic apparatus, substrate table, and method for enhancing substrate release properties
摘要:
A lithographic apparatus includes an illumination system constructed and arranged to condition a radiation beam, and a support constructed and arranged to support a patterning device. The patterning device is capable of imparting the radiation beam with a pattern in its cross-section to form a patterned radiation beam. The apparatus also includes a substrate table constructed and arranged to hold a substrate, and a projection system constructed and arranged to project the patterned radiation beam onto a target portion of the substrate. The substrate table includes a chuck having a plurality of protrusions constructed and arranged to support corresponding parts of a bottom surface of a wafer. The top surface of at least one of the protrusions includes a plurality of elements that define a reduced contact area between the substrate and the top surface of the protrusion.
信息查询
0/0