Patent ID: 6960381
Filing Date: 2005-11-01
Classification: G03F,Y10T

Abstract:
1. A pellicle for a photolithographic patterning process using a light having a wavelength of from 100 to 200 nm, said pellicle comprising: a pellicle membrane comprising (A) a substantially linear fluoropolymer which has an alicyclic structure in its main chain, the main chain being a chain of carbon atoms, and said fluoropolymer satisfying the following requirements (1) and (2): (1) the carbon atoms in the main chain of said fluoropolymer comprise a carbon atom having at least one hydrogen atom bonded thereto and a carbon atom having no hydrogen atom bonded thereto; and (2) in the measurement of a high resolution proton magnetic resonance spectrum, of said fluoropolymer, a number of hydrogen atoms based on signals appearing on a magnetic field side higher than 2.8 ppm, is at most 6 mol % based on a total number of hydrogen atoms.