| 摘要 |
PURPOSE: To enable a multilayer printed wiring board to be markedly lessened in energy consumption used for manufacture and improved in registration. CONSTITUTION: An electric insulating layer 3 of a multilayer printed board main body 1 is composed of a photosetting resin layer 4, a light transmitting electric insulating layer 5, and another photosetting resin layer 4. The light transmitting electric layer 5 is provided between the photosetting resin layers 4 and 4 and made of glass fibers or quartz fibers. When light is guided into the multilayer printed board main body 1 through the light transmitting electric insulating layer 5, the photosetting resin layers 4 and 4 are set by the light, whereby the layers 2 and 3 are formed into one piece. |
