Patent ID: 8304169

Claim:
An alkali-developable resin comprising: a unit that is represented by the following Formula 1; a unit that is represented by the following Formula 2; a unit that is represented by the following Formula 3; a unit that is represented by the following Formula 4; and a unit that is represented by the following Formula 5: wherein R1 is hydrogen or a group that forms a 5-membered cyclic carboxylic anhydride or imide structure in conjunction with X, R2s are each independently hydrogen or methyl, R3 is a group that is derived from a compound selected from the group consisting of glycidyl(meth)acrylate, allyl glycidyl ether, 3,4-epoxycyclohexylmethyl(meth)acrylate, glycidyl 5-norbornene-2-methyl-2-carboxylate (endo and exo mixtures), 1,2-epoxy-5-hexene, and 1,2-epoxy-9-decene, R4s are each independently a C 1 to C 4 alkoxy group, X is any one selected from the group consisting of C 1 to C 12 alkyl ester, C 2 to C 6 alkyl ester that is substituted with 1 to 2 hydroxyl groups, C 2 to C 6 alkyl ester that is substituted with a C 1 to C 3 alkoxy group, C 1 to C 6 alkyl ester that is substituted with a halogen group, C 1 to C 3 alkoxy poly(n=2 to 30) alkylene (C 2 to C 3 ) glycol ester, C 1 to C 6 alkyl ester that is substituted with a phenyl group, phenyl that is substituted with a C 1 to C 6 alkyl group, phenyl that is substituted with C 1 to C 6 alkoxy, phenyl that is substituted with a halogen group, C 1 to C 6 alkoxy methyl, glycidoxy methyl, and a group that forms a 5-membered cyclic carboxylic anhydride or imide structure in conjunction with R1, a, b, c, d, and e are each a molar ratio, a is in the range of 10 to 90, b is in the range of 5 to 30, c is in the range of 1 to 40, and d and e are each independently in the range of 1 to 40, Y is a group that is generated by using a ring opening polymerization reaction of a compound that is represented by the following Formula 7 and an alcohol group of the unit that is represented by the above Formula 2, wherein A is any one selected from the group consisting of hydrogen, C 1 to C 6 alkoxy, phenoxy, C 1 to C 10 alkyl that is unsubstituted or substituted with halogen, C 2 to C 10 alkenyl that includes 1 to 3 unsaturated groups, and phenyl, and B is any one selected from the group consisting of C 1 to C 6 alkoxy, phenoxy, C 1 to C 10 alkylene that is unsubstituted or substituted with halogen, C 2 to C 10 alkenylene that includes 1 to 3 unsaturated groups, and phenylene, and A and B may be connected to each other to form a pentagonal or hexagonal cycle.