Patent ID: 9596754
Date: 2017-03-14
CPC Classifications: B32B,G03F,H01L,H05K,Y10T

Claim:
1. A dry film, comprising: a carrier film; a thermosetting resin composition layer; and a photocurable resin composition layer formed between the thermosetting resin composition layer and the carrier film, wherein the thermosetting resin composition layer comprises an epoxy resin, an epoxy curing agent, and an inorganic filler, the photocurable resin composition layer comprises a carboxyl group-containing resin, a photopolymerization initiator, and a compound having at least one ethylenically unsaturated group in a molecule, and the carboxyl group-containing resin in the photocurable resin composition layer is at least one carboxyl group-containing resin selected from the group consisting of (1) a carboxyl group-containing resin obtained by copolymerization of an unsaturated carboxylic acid and an unsaturated group-containing compound, (2) a carboxyl group-containing urethane resin obtained by a polyaddition reaction of a diisocyanate, a carboxyl group-containing dialcohol compound, and a diol compound, (3) a carboxyl group-containing photosensitive urethane resin obtained by a polyaddition reaction of a diisocyanate, a (meth)acrylate or partial acid anhydride-modified product of a bifunctional epoxy resin, a carboxyl group-containing dialcohol compound, and a diol compound, (4) a carboxyl group-containing photosensitive urethane resin having a (meth)acrylated terminal, which is obtained by adding a compound having one hydroxyl group and at least one (meth)acryloyl group in the molecule during a synthesis of the resin of (2) or (3), (5) a carboxyl group-containing photosensitive urethane resin having a (meth)acrylated terminal, which is obtained by adding a compound having one isocyanate group and at least one (meth)acryloyl group in the molecule during a synthesis of the resin of (2) or (3), (6) a carboxyl group-containing photosensitive resin prepared by reacting a polyfunctional solid epoxy resin having two or more functional groups with (meth)acrylic acid, and then adding a dibasic acid anhydride to a hydroxyl group existing in a side chain of the resultant, (7) a carboxyl group-containing photosensitive resin prepared by reacting (meth)acrylic acid with a polyfunctional epoxy resin, which is obtained by epoxidizing a hydroxyl group of a bifunctional solid epoxy resin with epichlorohydrin, and then adding a dibasic acid anhydride to the resulting hydroxyl group, (8) a carboxyl group-containing polyester resin prepared by reacting a bifunctional oxetane resin with a dicarboxylic acid, and then adding a dibasic acid anhydride to the resulting primary hydroxyl group, (9) a carboxyl group-containing photosensitive resin prepared by reacting an unsaturated group-containing monocarboxylic acid with a reaction product obtained by a reaction between a compound having a plurality of phenolic hydroxyl groups in one molecule and an alkylene oxide, and then reacting the obtained product with a polybasic acid anhydride, (10) a carboxyl group-containing photosensitive resin prepared by reacting an unsaturated group-containing monocarboxylic acid with a reaction product obtained by a reaction between a compound having a plurality of phenolic hydroxyl groups in one molecule and a cyclic carbonate compound, and then reacting the obtained product with a polybasic acid anhydride, and (11) a carboxyl group-containing photosensitive resin obtained by adding a compound having one epoxy group and at least one (meth)acryloy group in one molecule to an one of the resins of (1) to (10).