FIELD EFFECT TRANSISTOR DEVICES WITH LOW SOURCE RESISTANCE

A semiconductor device includes a drift layer having a first conductivity type, a well region in the drift layer having a second conductivity type opposite the first conductivity type, and a source region in the well region, The source region has the first conductivity type and defines a channel reg...

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Bibliographische Detailangaben
Hauptverfasser: CHENG, Lin, DHAR, Sarit, RYU, Sei-Hyung, CAPELL, Doyle Craig, JONAS, Charlotte, AGARWAL, Anant, PALMOUR, John
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A semiconductor device includes a drift layer having a first conductivity type, a well region in the drift layer having a second conductivity type opposite the first conductivity type, and a source region in the well region, The source region has the first conductivity type and defines a channel region in the well region. The source region includes a lateral source region adjacent the channel region and a plurality of source contact regions extending away from the lateral source region opposite the channel region. A body contact region having the second conductivity type is between at least two of the plurality of source contact regions and is in contact with the well region. A source ohmic contact overlaps at least one of the source contact regions and the body contact region. A minimum dimension of a source contact area of the semiconductor device is defined by an area of overlap between the source ohmic contact and the at least one source contact region.