Fabrication of MOS device with integrated Schottky diode in active region contact trench

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United States of America Patent

PATENT NO 8728890
SERIAL NO

13870649

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Abstract

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Fabricating a semiconductor device includes: forming a gate trench in an epitaxial layer overlaying a semiconductor substrate; depositing gate material in the gate trench; forming a body in the epitaxial layer, having a body top surface and a body bottom surface; forming a source; forming an active region contact trench that extends through the source and the body into the drain, wherein bottom surface of the active region contact trench is formed to include at least a portion that is shallower than the body bottom surface; and disposing a contact electrode within the active region contact trench.

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Patent Owner(s)

  • ALPHA & OMEGA SEMICONDUCTOR, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bhalla, Anup Santa Clara, US 323 5719
Pan, Ji San Jose, US 44 583
Wang, Xiaobin San Jose, US 190 2558
Wei, Sung-Po San Jose, US 11 152

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