Semiconductor with high-voltage components and low-voltage...

Active solid-state devices (e.g. – transistors – solid-state diode – Integrated circuit structure with electrically isolated... – Including high voltage or high power devices isolated from...

Reexamination Certificate

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C257S302000, C257S490000

Reexamination Certificate

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06992362

ABSTRACT:
A method and apparatus for increasing a breakdown voltage of a semiconductor device. The semiconductor device is constructed within an epitaxial tub of a first conductivity type formed within a dielectric material and comprises a surface diffusion region of a second conductivity type, opposite that of the first conductivity type, extending into the epitaxial tub, a trench surrounding and electrically isolating the epitaxial tub, a metallization line coupled to the surface diffusion traversing the semiconductor device and the trench, a first field limiting diffusion region of the second conductivity type disposed between the surface diffusion region and the trench and below the metallization line, a poly field plate positioned over the trench and beneath the metallization line, and a first contact coupled to the field limiting diffusion region, the first contact extending below the metallization line and overlapping the poly field plate.

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patent: 2003/0173639 (2003-09-01), Pernyeszi

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