| 摘要 |
PROBLEM TO BE SOLVED: To provide the manufacturing method of a print substrate capable of improving a positional accuracy by correctly aligning a transfer film and capable of improving the consistency of positions among wiring patterns of respective layers. SOLUTION: The manufacturing method of the print substrate constituted of a plurality of layers of wiring patterns 60 and insulation layers 44 which are alternately formed on the surfaces of the core members 2 comprises a process for forming new insulation layers on the whole of the surfaces; a process for forming reference non- penetrating holes 28, 46 by laser beam L1 so as to arrive at a lower layer, while referencing an immediately below wiring pattern at a position not being superposed on the wiring pattern of a lower layer in a pattern forming area 7 on the new insulation layers; a process for forming a conductive layer on the insulation layer so that a positioning recess 32 can be formed above the reference non-penetrating holes; a process for aligning and fixing the transfer films 38, 46, on which a predetermined circuit pattern is recorded, based on the positioning recess for the register layer formed on the new insulation layer; and a process for forming the wiring pattern of an upper layer by making a pattern through the transferring of the circuit pattern of the transfer film on the conductive layers 30, 48. COPYRIGHT: (C)2003,JPO |
