| 摘要 |
PROBLEM TO BE SOLVED: To reduce unit manufacturing cost by providing an unsharp rouge surface at the resin flow path region or a part or the whole of the path and another region, and performing sealing thereafter. SOLUTION: A sattin finished rough surface 21 is formed on the bottom surface (rear surface) of a lead frame 10. The surface 21 is provided on the surface of a resin flow path region 23 where resin flows, connected to a seal region 22 where a seal member (package) is formed by the resin. The sattin finished surface 21 is formed such that a projecting portion 26 has a rounded tip and a recess portion has a rounded bottom, thus the surface 21 has an unsharp rough finish. Thus, when an external force for removal is applied to the resin portion, the lead frame 10 and the resin easily slide with each other at slopes of the recess and projection portions, and the resin can be easily removed from the lead frame 10. |
