Semiconductor device and method of manufacture

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

Reexamination Certificate

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C257S401000

Reexamination Certificate

active

11144569

ABSTRACT:
A semiconductor component and method of manufacture, including an insulated gate bipolar transistor (IGBT) (100, 200, 300, 400) that includes a semiconductor substrate (110, 210, 310, 410) having a first conductivity type and buried semiconductor region (115, 215, 315, 415) having a second conductivity type located above the semiconductor substrate. The IGBT further includes a first semiconductor region (120, 220, 320, 420) having the first conductivity type located above the buried semiconductor region, a second semiconductor region (130, 230, 330, 430) having the first conductivity type located above the first semiconductor region, a third semiconductor region (140, 240, 340, 440) having the second conductivity type located above the first semiconductor region, an emitter (150, 250, 350, 450) having the first conductivity type disposed in the third semiconductor region, and a collector (170, 270, 370, 470) having the first conductivity type disposed in the third semiconductor region. In a particular embodiment, the third semiconductor region and the buried semiconductor region deplete the first semiconductor region in response to a reverse bias applied between the second semiconductor region and the third semiconductor region.

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patent: 2002/0005559 (2002-01-01), Suzuki
patent: 2004/0084744 (2004-05-01), Khemka et al.

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