Patent ID: 9497856
Filing Date: 2016-11-15
CPC Classification: B32B,G03F,H05K,Y10T

Claim Text:
1. A laminated structure, comprising: a printed circuit board having a conductor circuit layer; and a solder resist layer having a pattern and formed on the printed circuit board, the solder resist layer comprising a plurality of resin insulating layers including a first resin insulating layer and at least one second resin insulating layer such that the first resin insulating layer is formed in contact with the conductor circuit layer of the printed circuit board, wherein the first resin insulating layer is formed from a photocurable and thermosetting alkali developing resin composition which comprises a photopolymerization initiator, a carboxyl group-containing resin, a thermosetting component, and a curing accelerator composed of an N atom-containing basic compound and comprises substantially no P atom-containing curing accelerator, the second resin insulating layer is formed from a photocurable and thermosetting alkali developing resin composition comprising a photopolymerization initiator, a carboxyl group-containing resin, a thermosetting component, and a P atom-containing curing accelerator and comprising substantially no curing accelerator composed of an N atom-containing basic compound, the curing accelerator composed of the N atom-containing basic compound of the first resin insulating layer comprises at least one of dicyandiamide, melamine, imidazole, benzimidazole, 2-methylimidazole, 2-ethylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 4-phenylimidazole, 1-cyanoethyl-2-phenylimidazole, 1-(2-cyanoethyl)-2-ethyl-4-methylimidazole, benzyldimethylamine, 4-(dimethylamino)-N,N-dimethylbenzylamine, 4-methoxy-N,N-dimethylbenzylamine, 4-methyl-N,N-dimethylbenzylamine, benzoxazole, benzothiazole, benzotriazole and 2-vinyl-4,6-diamino-1,3,5-triazine, and the P atom-containing curing accelerator of the second resin insulating layer comprises at least one of triphenylphosphine, tri-p-tolylphosphine, tri-o-tolylphosphine, tri-m-tolylphosphine, tri-2,4-xylylphosphine, tetraphosphonium tetraphenylborate, tetraphenylphosphonium tetra-p-methylphenylborate, tetraphenylphosphonium thiocyanate, and tetrabutylphosphonium decanoate.