| 摘要 |
PURPOSE:To perform correctly directing electrical connection between respective wiring layers even though a laminating process is affected by heat or moisture, by performing positioning in each through-hole prior to lamination of layers and performing its lamination while piercing a pin for position-fixing so the the above positioning does not move. CONSTITUTION:Prior to lamination of layers, respective through-holes are formed in each internal layer plate 1 and when laminated, a pin 5 for position- fixing is inserted in the through hole 4 of the internal layer plate 1, corresponding to an intermediate layer of a substrate out of respective internal layer plates 1 and it is fixed after bonding it in a state that both end parts of the pin protrude satisfactorily from each internal layer plate 1. Then prepregs 3 are inserted in respective internal layer plates 1 and a protruding part of the foregoing pin 5 is inserted in the through hole-4 of other internal layer plate 1 which is adjacent to the initial through-hole and after that, positioning is carried out among the through-holes mutually and electrical continuity is obtained respective wiring layers 2 and in this way, a plurality of internal layer plates are fixed by laminating and pressing them with pressure. |
