Semiconductor lead frame with channel beam tie bar

Details Semiconductor lead frame with channel beam tie bar Semiconductor lead frame with channel beam tie bar

1998-03-12

1999-12-28

Clark, Sheila V.

Active solid-state devices (e.g., transistors, solid-state diode

Lead frame

With separate tie bar element or plural tie bars

H01L 23495

Patent

active

060085282

ABSTRACT:
The invention is a lead frame (30) with tie bars (32-35) having reenforcing channels (44, 53, 64) extending at least a portion of the length of the tie bar. The lead frame (30) and channels (44, 53, 64) in the tie bars (32-35) may be formed either by stamping or by chemical etching. Each channel tie bar has at least two parts (51,52) forming a channel, the parts extending from each other at an angle less than 180.degree..

REFERENCES:
patent: 5554885 (1996-09-01), Yamasaki et al.
patent: 5637913 (1997-06-01), Kajihara et al.
patent: 5661338 (1997-08-01), Yoo et al.
patent: 5763942 (1998-06-01), Suzuki

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