Patent ID: 6627379
Filing Date: 2003-09-30
Classification: G03F,Y10S

Abstract:
A photoresist composition comprising:a photoresist resin, a photoacid generator, and an organic solvent, wherein the photoresist resin comprises a first copolymer comprising a compound of the formula â€ƒwherein R1 is H, a (C1-C10) alkyl or a (C1-C10) aryl, and a mol % ratio of a:b ranges from about 20:80 to about 80:20, and a second copolymer comprising a compound of the formula â€ƒwherein R2 is an acid labile protecting group; and a mol % ratio of c:d:e is such that c ranges from about 30 mol % to about 70 mol %, d ranges from about 28 mol % to about 50 mol % and e ranges from about 2 mol % to about 15 mol %.