Patent ID: 8288078
Filing Date: 2012-10-16
Classification: G03F

Abstract:
1. A photosensitive resin composition, comprising: a polyfunctional epoxy resin as component (a); a cation polymerization initiator as component (b); and a solvent as component (c), wherein the component (b) is an onium fluorinated alkyl fluorophosphate represented by the following general formula (1): (in the formula (1), A represents a sulfur atom or an iodine atom of valence m, m being 1 or 2; n represents the number of repeating units of the structure in parenthesis, and is an integer of 0 to 3; R, which is an organic group bonding to A, represents an aryl group having 6 to 30 carbon atoms, a heterocyclic group having 4 to 30 carbon atoms, an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, or an alkynyl group having 2 to 30 carbon atoms; and R may be substituted with at least one selected from the group consisting of alkyl, hydroxyl, alkoxy, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aryloxycarbonyl, arylthiocarbonyl, acyloxy, arylthio, alkylthio, aryl, heterocyclic, aryloxy, alkylsulfinyl, arylsulfinyl, alkylsulfonyl, arylsulfonyl, amino, cyano and nitro groups, and a halogen atom; the number of R is m+n (m−1)+1; and R may be identical or different to each other; two or more R may bond directly or via —O—, —S—, —SO—, —SO R′ is an alkyl group having 1 to 5 carbon atoms or an aryl group having 6 to 10 carbon atoms; D is a structure represented by the following general formula (2): in the formula (2), E represents an alkylene group having 1 to 8 carbon atoms, an arylene group having 6 to 20 carbon atoms, or a divalent group of a heterocyclic compound having 8 to 20 carbon atoms, and E may be substituted with at least one selected from the group consisting of an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an aryl group having 6 to 10 carbon atoms, a hydroxy group, a cyano group, a nitro group, and a halogen atom; G represents —O—, —S—, —SO—, —SO a is an integer of 0 to 5; E present in the number of “a+1” may be identical or different to each other; and G present in the number of “a” may be identical or different to each other; R′ is as defined above; X the number of X in the formula (3), Rf represents an alkyl group in which at least 80% of hydrogen atoms are each substituted with a fluorine atom; b represents the number of Rf, and is an integer of 1 to 5; and Rf present in the number of “b” may be identical or different to each other), and the component (c) is a mixed solvent of a lactone based solvent and a hydroxycarboxylate ester based solvent, wherein the hydroxycarboxylate ester based solvent is at least one selected from the group consisting of a glycolic acid alkyl ester, a lactic acid alkyl ester and a 2-hydroxbutyric acid alkyl ester, having an alkyl group with a carbon number of 1-5.