| 摘要 |
PURPOSE:To increase the yield when fine wires are connected by processing metal sheets or bringing some inner point positions of a lead frame comprising both a group of lead wires and an element mount part backward and expanding the inner points of the other leads. CONSTITUTION:An element mount part 3, outer leads 4a, 4', 4c, 4d..., and an inner frame 5 for fixing the outer leads are equipped by photographically etching Koval sheets, etc. between outer frames 1a, 1b. The position of an inner point of an inner point of a certain lead such as a lead 4' which is'nt connected with a metal fine wire is formed at a more rear position than those of other leads 4a, 4c,.... The clearance produced by the above is supplement by an expanded inner point width l of other lead 4a, etc. |
