Active solid-state devices (e.g. – transistors – solid-state diode – Lead frame
Patent
1997-01-29
1998-10-13
Saadat, Mahshid D.
Active solid-state devices (e.g., transistors, solid-state diode
Lead frame
257659, H01L 23495
Patent
active
058216065
ABSTRACT:
As the semiconductor chip is large-sized, highly integrated and speeded up, it becomes difficult to pack the semiconductor chip together with leads in a package. In view of this difficulty, there has been adopted the package structure called the "Lead-On-Chip" or "Chip-On-Lead" structure in which the semiconductor and the leads are stacked and packed. In the package of this structure, according to the present invention, the gap between the leading end portions of the inner leads and the semiconductor chip is made wider than that between the inner lead portions except the leading end portions and the semiconductor chip thereby to reduce the stray capacity, to improve the signal transmission rate and to reduce the electrical noises.
REFERENCES:
patent: 4862245 (1989-08-01), Pashby et al.
patent: 5530286 (1996-06-01), Murakami et al.
patent: 5612569 (1997-03-01), Murakami et al.
patent: 5656551 (1997-08-01), Corbett et al.
Anjo Ichiro
Eguchi Syuuji
Hasebe Akio
Hozoji Hiroshi
Ichitani Masahiro
Clark S. V.
Hitachi , Ltd.
Saadat Mahshid D.
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