Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1986-02-28
1988-11-22
Carroll, J.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
357 20, 357 34, 357 35, 357 71, 357 86, 357 88, 307570, 307548, 307544, H01L 2702, H01L 2906, H01L 2972
Patent
active
047869615
ABSTRACT:
An integrated circuit includes a substrate of one conductivity type silicon and an epitaxial layer of the opposite conductivity type silicon on a surface of the substrate. An emitter region of the one conductivity type is in the epitaxial layer and a collector region of the one conductivity type is in the epitaxial layer and extends around but is spaced from the emitter region. A third region of the one conductivity type is in the epitaxial layer and extends partly around and is spaced from the collector region. A highly conductive connector region of the opposite conductivity type extends into the epitaxial layer to a buried region of the opposite conductivity type which is along the junction of the epixtaxial layer and the substrate. The connector region contacts the third region. A thin layer of silicon oxide extends over the epitaxial layer. Separate contacts extend through the epixtaxial layer to the emitter region, collector region and to adjacent portions of the third region and the collector region. A conductive gate is on the insulating layer and across the portion of the epitaxial layer between the collector region and the third region. A second layer of silicon oxide is on the first layer and over the contacts and the gate. A conductive strip is on the second silicon oxide layer and extends through openings in the second silicon oxide layer to contact the emitter region contact and the gate. This provides a bipolar transistor having a MOS transistor having its source and drain connected between the collector and base of the bipolar transistor and its gate connector to the emitter of the bipolar transistor.
REFERENCES:
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patent: 4400711 (1983-08-01), Avery
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patent: 4611237 (1986-09-01), Ohuchi et al.
patent: 4661833 (1987-04-01), Mizutani
patent: 4692786 (1987-09-01), Lindenfelser
Carroll J.
Davis Jr. James C.
General Electric Company
Ngo Ngan Van
Steckler Henry I.
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