Diode structures
AssigneeGlobalfoundries Inc.
InventorsJagar SINGH, Shiv Kumar MISHRA
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Abstract
The present disclosure relates to semiconductor structures and, more particularly, to high voltage diode structures and methods of manufacture. The structure includes: a diode structure composed of first well of a first dopant type in a substrate; and a well ring structure of the first dopant type in the substrate which completely surrounds the first well of the first dopant type, and spaced a distance “x” from the first well to cut a leakage path to a shallower second well of a second dopant type.
Claims20
A structure comprising a plurality of N-type well ring structures of a first dopant type in a substrate completely surrounding a first well of the first dopant type, and spaced a distance “x” from the first well to cut a leakage path to a shallower second well of a second dopant type.
A diode structure comprising an N-type ring structure completely surrounding a first N-well and a N+ contact, the N-type ring structure being spaced a distance “x” from the first N-well, and the first N-well comprising a deep well implant, an N-well implant and the N+ contact, and the N-type ring structure includes a deep well implant.
A diode structure comprising an N-type ring structure which completely surrounds a first N-well and a N+ contact and a deep N-well, the N-type ring structure being spaced a distance “x” from the deep N-well, wherein the distance “x” varies between 50 nm to 2 microns.
Dependencies are inferred from the claim text.