| 摘要 |
PURPOSE:To stably manufacture a multi-pin lead frame which has a wide wire bonding effective width for an inner lead by both pressing and etching. CONSTITUTION:A lead frame is permitted to have at least an outer lead 4 and an inner lead 2 which is provided around a pad continuously from the outer lead. For the manufacturing of the lead frame, a photoresist film 9 is provided on a metal plate and a resist pattern is formed on the one plane of the photoresist film in the forming area of the inner lead 2 or the inner lead tip. Etching is performed from the one plane so as to etch the inner lead 2 or the tip of the inner lead and the outer lead 4 is formed by pressing. |
