Bipolar transistor with reduced collector resistance

Details Bipolar transistor with reduced collector resistance Bipolar transistor with reduced collector resistance

1990-08-10

1992-04-28

Hille, Rolf

Fishing, trapping, and vermin destroying

357 35, 357 59, 357 49, 437162, 437203, H01L 2972, H01L 2712, H01L 2904, H01L 21225

Patent

active

051092620

ABSTRACT:
A bipolar transistor in which a base region and a collector lead-out portion is separated is disclosed. The base region and an active collector portion under the base region is surrounded by a narrow trench filling an insulating film, and the trench is in turn surrounded by the collector lead-out portion. A collector electrode is contacted to the upper surface of the collector lead-out portion such that the collector contact surrounds the active collector portion via the trench, in the plan view.

REFERENCES:
patent: 4745087 (1988-05-01), Iranmanesh

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