Patent ID: 8091218

Claim:
A method of manufacturing a rigid printed wiring board which is bendable, comprising a step of embedding a heat resistant resin material in a gap portion provided in a hard core material, a step of forming a laminate by laminating respective conductor layers on a front surface and a rear surface of the hard core material via respective heat resistant layers, wherein the heat resistant layer on the rear surface is or is not laminated over the heat resistant resin material, and hot pressing the laminate a step of forming respective circuits at the front surface and the rear surface of the wiring board by etching the conductor layers and removing that portion of the conductor layers overlying the gap portion on the rear surface of the hard core material, and a step of removing the heat resistant resin material embedded in the gap portion along with that portion, if any, of the heat resistant layer, overlying the gap portion on the rear surface of the hard core material, whereby the wiring board is bendable at the gap.