Patent ID: 7391501
Filing Date: 2008-06-24
Classification: G03F

Abstract:
1. A system, comprising: an optical illumination module to project an illumination beam; a mask located in a path of the illumination beam and having an optical pattern to superimpose the optical pattern on the illumination beam; an optical imaging module located to receive the patterned illumination beam and to focus the patterned illumination beam to an imaging plane; a wafer stage to hold a wafer at the imaging plane; and an immersion liquid comprising a siloxane polymer and filled between the wafer and the optical imaging module to transmit the patterned illumination beam to the wafer, wherein the polymer comprises [—Si(CH3)2-O—Si(CH3)2-O-]x-Poly(tButoxyl Acrylate)y, where x and y are integers.