Patent ID: 8237196
Filing Date: 2012-08-07
Classification: H01L

Abstract:
1. A semiconductor device comprising: a first semiconductor layer of non-doped Al a second semiconductor layer of non-doped or n-type Al a first electrode on the second semiconductor layer; a second electrode on the second semiconductor layer configured to be separated from the first electrode and electrically connected to the second semiconductor layer; a first insulating film on the second semiconductor layer configured to cover the first and second electrodes; a first field plate electrode on the first insulating film configured to be electrically connected to the first electrode; a second insulating film configured to cover the field plate electrode; and a second field plate electrode on the second insulating film, wherein a length of at least one of the first and second field plate electrodes in a first direction changes periodically in a second direction, the first direction being a direction from the first electrode toward the second electrode and the second direction perpendicularly intersecting with the first direction.