LAYOUT CONFIGURATIONS FOR INTEGRATING SCHOTTKY CONTACTS INTO A POWER TRANSISTOR DEVICE
First Claim
1. A semiconductor device comprising:
- a vertical FET device comprising;
a substrate;
a drift layer formed over the substrate;
a plurality of junction implants, each of the plurality of junction implants laterally separated from each other one of the plurality of junction implants in the surface of the drift layer opposite the substrate and extending downwards towards the substrate; and
at least two bypass diodes, each one of the bypass diodes comprising a Schottky metal contact on the first surface of the drift layer opposite the substrate, such that each Schottky metal contact runs between two of the plurality of junction implants.
3 Assignments
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Accused Products
Abstract
A semiconductor device includes a vertical field-effect-transistor (FET) and a bypass diode. The vertical FET device includes a substrate, a drift layer formed over the substrate, a gate contact and a plurality of source contacts located on a first surface of the drift layer opposite the substrate, a drain contact located on a surface of the substrate opposite the drift layer, and a plurality of junction implants, each of the plurality of junction implants laterally separated from one another on the surface of the drift layer opposite the substrate and extending downward toward the substrate. Each of the one or more bypass diodes are formed by placing a Schottky metal contact on the first surface of the drift layer, such that each Schottky metal contact runs between two of the plurality of junction implants.
28 Citations
26 Claims
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1. A semiconductor device comprising:
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a vertical FET device comprising; a substrate; a drift layer formed over the substrate; a plurality of junction implants, each of the plurality of junction implants laterally separated from each other one of the plurality of junction implants in the surface of the drift layer opposite the substrate and extending downwards towards the substrate; and at least two bypass diodes, each one of the bypass diodes comprising a Schottky metal contact on the first surface of the drift layer opposite the substrate, such that each Schottky metal contact runs between two of the plurality of junction implants. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for manufacturing a semiconductor device comprising:
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providing a substrate; growing a drift layer on a surface of the substrate; implanting a plurality of junction implants in the surface of the drift layer opposite the substrate, each of the plurality of junction implants laterally separated from one another and extending downwards towards the substrate; and providing a plurality of Schottky metal contacts on the first surface of the drift layer, such that the Schottky metal contacts run between at least two of the plurality of junction implants. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification