Patent ID: 7498393

Claim:
A photoresist structure having a resist protective film, comprising a substrate having thereon a resist film, wherein the resist film has thereon a resist protective film, wherein the resist protective film, comprises a fluoropolymer having monomer units formed by cyclopolymerization of a fluorinated diene represented by the following formula (14) or (15): CF 2 ═CFCF 2 C(CF 3 )(OR 1 )—(CH 2 ) n CR 2 ═CHR 3 (14) CF 2 ═CFCH 2 CHQ-(CH 2 ) n CR 2 ═CHR 3 (15) wherein R 1 is a hydrogen atom, an alkyl group having at most 20 carbon atoms, or (CH 2 ) a COOR 4 (wherein a is 0 or 1, and R 4 is a hydrogen atom or an alkyl group having at most 20 carbon atoms), each of R 2 and R 3 , which are independent of each other, is a hydrogen atom or an alkyl group having at most 12 carbon atoms, Q is (CH 2 ) b C(CF 3 ) c (R 5 ) d OR 1 (wherein R 1 is as defined above, b is an integer of from 0 to 3, c and d are integers of from 0 to 2 satisfying c+d=2, and R 5 is a hydrogen atom or a methyl group), provided that when R 1 , R 2 , R 3 or R 4 is an alkyl group, some or all of its hydrogen atoms may be substituted by fluorine atoms, or it may have an etheric oxygen atom, and n is an integer of from 0 to 2.