Structure for gated lateral bipolar transistors

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode

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257162, 257273, 257557, 257575, H01L 2976, H01L 27082

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active

060752726

ABSTRACT:
An improved structure and method for gated lateral bipolar transistors is provided. The present invention capitalizes on opposing sidewall structures and adjacent conductive sidewall members to conserve available surface space on the semiconductor chips. The conserved surface space allows a higher density of structures per chip. The conductive sidewall members couple to the gate of the gated lateral bipolar transistor and, additionally, to a retrograded, more highly doped bottom layer. The improved structure provides for both metal-oxide semiconductor (MOS) type conduction and bipolar junction transistor (BJT) type conduction beneath the gate of the gated lateral bipolar transistor.

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