| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a bimetal TAB and double-coated CSP, BGA tape and a method for manufacturing them, which can have no fluctuations in characteristics, even in manufacturing on a mass production basis. SOLUTION: In the bimetal TAB and double-coated SCP and BGA tape, which has an insulating substrate and wiring layers at least on both sides of the substrate, and where sprocket holes are made at equal intervals, in both ends in the width direction along the longitudinal direction, the substrate has through-holes made by a punching press, the through-holes are filled with conductor by the punching press; the conductor and wiring layers are connected electrically to each other; and a pilot round hole is made between the sprocket holes made in the longitudinal direction.</p> |
