Patent ID: 8525272
Filing Date: 2013-09-03
Classification: H01L,H03K

Abstract:
1. A high-frequency switching transistor comprising: a substrate having a substrate dopant concentration; a barrier region bordering on the substrate, comprising a first conductivity type and having a barrier region dopant concentration, which is higher than the substrate dopant concentration; a source region embedded in the barrier region, comprising a second conductivity type different to the first conductivity type, and having a source region dopant concentration, which is higher than the barrier region dopant concentration; a drain region embedded in the barrier region and disposed offset from the source region, comprising the second conductivity type and having a dopant concentration, which is higher than the barrier region dopant concentration; a channel region extending between the source region and the drain region, wherein the channel region comprises a subregion of the barrier region; an insulation region, which covers the channel region and is disposed between the channel region and a gate electrode; wherein the barrier region dopant concentration and the substrate dopant concentration are chosen for generating a space-charge region around the source region and the drain region and for depleting the barrier region.