| 摘要 |
PURPOSE:To improve junction strength between a coated wire and an inner lead and improve reliability from the view point of its junction. CONSTITUTION:A plated layer 7 having a rougher surface than in the past is formed on the surface of an inner lead 5b of a lead frame 1, with which a coated wire 8 where the surface of a metal wire 8a is coated with a coating insulating film 8b. Then, when the coated wire 8 is to be joined with the inner lead 5b, the coated insulating film 8b of the coated wire 8 can be broken by the unevenness of the surface of the plated layer 7. |
