Patent ID: 6527162
Filing Date: 2003-03-04
Classification: H05K

Abstract:
A connecting method of printed circuit boards, comprising:forming a conductive pattern having a first plurality of lands, on a first printed circuit board made of a thermoplastic resin; forming a conductive pattern having a second plurality of lands, on a second printed circuit board; forming a solder resist portion on the second printed circuit board, between neighboring two lands of the second plurality of lands; supplying solder to at least one side of the first plurality of lands and the second plurality of lands; overlapping the first plurality of lands with the second plurality of lands to interpose the solder between the first plurality of lands and the second plurality of lands; and pressurizing and heating a connecting portion of the first printed circuit board and the second printed circuit board, at a predetermined temperature to electrically connect the first plurality of lands and the second plurality of lands through the solder, and to adhere the first printed circuit board to a surface of the second printed circuit board by the thermoplastic resin of the first printed circuit board that is softened and deformed at the predetermined temperature, the predetermined temperature being equal to or higher than a glass transition temperature of the thermoplastic resin and being equal to or higher than a fusing temperature of the solder, wherein: the solder resist portion is terminated to have an end portion that is interposed between the first printed circuit board and the second printed circuit board at the connecting portion.