Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – Having insulated gate
Patent
1995-06-06
1999-05-04
Niebling, John
Semiconductor device manufacturing: process
Making field effect device having pair of active regions...
Having insulated gate
438208, 438220, 438358, 438416, 148DIG85, 257370, 257545, 257549, 257654, 257657, H01L 2714
Patent
active
058997148
ABSTRACT:
Integrated circuits suitable for high-performance applications, especially mixed signal products that have analog and digital sections, are fabricated from a semiconductor structure in which lower buried regions of opposite conductivity types are situated along a lower semiconductor interface between a semiconductive substrate and an overlying lower semiconductive layer. An upper buried region of a selected conductivity type is situated along an upper semiconductor interface between the lower semiconductive layer and an overlying upper semiconductive layer. Another upper buried region of opposite conductivity type to the first-mentioned upper buried region is preferably situated along the upper semiconductor interface. The upper semiconductive layer contains P-type and N-type device regions in which transistor zones are situated. The semiconductor structure is configured so that at least one of each of the P-type and N-type device regions is electrically isolated from the substrate. Complementary bipolar transistors can be integrated with complementary field-effect transistors in the structure.
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Brehmer Kevin E.
Cacharelis Philip J.
Farrenkopf Douglas R.
Gadepally Kamesh
Merrill Richard B.
Meetin Ronald J.
National Semiconductor Corporation
Niebling John
Pham Long
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