Integrated circuits

Details Integrated circuits Integrated circuits

1989-05-05

1990-09-04

James, Andrew J.

Fishing, trapping, and vermin destroying

357 34, 357 35, 357 59E, 357 59H, 437 31, 437193, H01L 2702

Patent

active

049548654

ABSTRACT:
An integrated circuit structure has a number of device areas each of which is configurable in a subsequent customizing process as a field effect transistor, a bipolar transistor or as a pair of those devices. Configuration of the structure is determined by correspondingly selective etching of a polysilicon layer disposed on the structure.

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Caswell, "Plessey Claims a Bipolar Speed Mark", Electronics, Aug. 20, 1987.
"Heterojunction Emitter Multiplies Transistor's Current Gain by 50", Electronics, vol. 52, No. 22, 10/25/79.

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