Patent · US Active

Lithographic apparatus and device manufacturing method

US9134623B2 · kind B2 · utility

7Cited by
50References
21Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 30, 2014
Grant dateSep 15, 2015
Priority date
Expiry dateApr 30, 2034

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.