Patent ID: 6406831
Filing Date: 2002-06-18
Classification: G03F,Y10S

Abstract:
A chemically amplified resist composition comprising an photoacid generator which releases an acid by exposure to light, and an acid sensitive resin which has an alkali soluble group protected with a dissolution controlling group and is converted into an alkali soluble resin by the cleavage of the dissolution controlling group by the action of the acid, wherein said acid sensitive resin has weight-average molecular weight of 100,000 to 5,000,000 and represented by the following formula (4) or (5): wherein R6 represents a crosslinked structure of â€”Oâ€”C(CH3)2â€”Oâ€” or â€”COâ€”Oâ€”C(CH3)2â€”Oâ€”COâ€”, R8 represents a hydroxyl group or a carboxyl group, z stands for 0.1 to 0.9 and w stands for 0.1 to 0.9.