| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lead frame manufacturing method, capable of manufacturing a lead frame from one metal plate material, while maintaining design flexibility and high productivity. <P>SOLUTION: In the lead frame manufacturing method, by press working a strip-shaped conductor during successive feed thereof, forming parallel frame portions 1a, 1b on both sides thereof and forming part portions 3a, 3b connected to the frame portions 1a, 1b by connection portions 2a, 2b between both frame portions 1a, 1b, the connection portions 2a, 2b are configured to function as deformation portions allowing distance variations of the part portions 3a, 3b relative to the frame portions 1a, 1b, in a state of a maintained connection state between the frame portions 1a, 1b and the part portions 3a, 3b. When processing both frame portions 1a, 1b during the successive feed thereof at an identical speed, the frame portions 1a, 1b are moved in such a manner as to vary the distance of the part portions 3a, 3b relative to the frame portions 1a, 1b. <P>COPYRIGHT: (C)2012,JPO&INPIT |
