Patent · US Active

Lithographic apparatus and device manufacturing method

US8634056B2 · kind B2 · utility

8Cited by
48References
21Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 20, 2011
Grant dateJan 21, 2014
Priority date
Expiry dateApr 16, 2032

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03F7/70958
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An immersion lithographic projection apparatus is disclosed in which liquid is provided between a projection system of the apparatus and a substrate. The use of both liquidphobic and liquidphilic layers on various elements of the apparatus is provided to help prevent formation of bubbles in the liquid and to help reduce residue on the elements after being in contact with the liquid.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.