Vertical power devices fabricated using implanted methods
AssigneeWolfspeed, Inc.
InventorsDaniel Jenner Lichtenwalner, Sei-Hyung Ryu, Arman Ur Rashid
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AssigneeWolfspeed, Inc.
InventorsDaniel Jenner Lichtenwalner, Sei-Hyung Ryu, Arman Ur Rashid
Estimating the term…
A precursor for a vertical semiconductor device is provided with a substrate, a drift region over the substrate, and an upper precursor region over the drift region. The top surface of the precursor is substantially planar, and the substrate and the drift region are doped with a first dopant of a first polarity. In a first embodiment, a series of implants with a second dopant is provided in the upper precursor region via the top surface to form each of at least two gate regions such that each implant of the series of implants is provided at a different depth below the top surface. In a second embodiment, a series of implants with the first dopant is provided in the upper precursor region via the top surface to form a channel region that has at least a portion between two gate regions.
A method for forming a vertical semiconductor device comprising:
Dependencies are inferred from the claim text.