Method of fabrication of PNP structure in a common substrate con

Details Method of fabrication of PNP structure in a common substrate con Method of fabrication of PNP structure in a common substrate con

1992-09-14

1995-02-07

Hearn, Brian E.

Fishing, trapping, and vermin destroying

437 59, 437164, 437 34, 148DIG9, H01L 21265

Patent

active

053875524

ABSTRACT:
A pnp device in a BiCMOS structure (1). PNP transistors (4) are fabricated without the need for additional process steps on the same substrate as npn (2), PMOS (8), and NMOS (6) devices. The process not only requires a minimum number of additional process steps, but results in devices with near optimum device characteristics.

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