Array of cells including a selection bipolar transistor and...

Details Array of cells including a selection bipolar transistor and... Array of cells including a selection bipolar transistor and...

2006-10-19

2008-11-04

Potter, Roy K (Department: 2822)

Semiconductor device manufacturing: process

Forming bipolar transistor by formation or alteration of...

Including passive device

C438S330000

Reexamination Certificate

active

07446011

ABSTRACT:
A cell array is formed by a plurality of cells each including a selection bipolar transistor and a storage component. The cell array is formed in a body including a common collector region of P type; a plurality of base regions of N type, overlying the common collector region; a plurality of emitter regions of P type formed in the base regions; and a plurality of base contact regions of N type and a higher doping level than the base regions, formed in the base regions, wherein each base region is shared by at least two adjacent bipolar transistors.

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