Semiconductor device manufacturing: process – Forming bipolar transistor by formation or alteration of... – Forming base region of specified dopant concentration profile
Patent
1993-05-24
2000-09-26
Brown, Peter Toby
Semiconductor device manufacturing: process
Forming bipolar transistor by formation or alteration of...
Forming base region of specified dopant concentration profile
438202, 438364, 438365, 438369, 438564, 148DIG9, 148DIG10, 148DIG11, H01L 21331
Patent
active
061241806
ABSTRACT:
A BiCMOS process where a base region is formed in a relatively highly doped n-type substrate region. Boron is implanted at two different energy levels to form the base region and a counter doped n region near the base collector junction to prevent impact ionization.
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Chambers Stephen T.
Taylor Richard G.
Brown Peter Toby
Intel Corporation
Pham Long
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