Patents Assigned to Northrop Grummen Systems Corporation
  • Patent number: 8664048
    Abstract: A semiconductor device with minimized current flow differences and method of fabricating same are disclosed. The method includes forming a semiconductor stack including a plurality of layers that include a first layer having a first conductivity type and a second layer having a first conductivity type, in which the second layer is on top of the first layer, forming a plurality of mesas in the semiconductor layer stack, and forming a plurality of gates in the semiconductor layer stack having a second conductivity type and situated partially at a periphery of the mesas, in which the plurality of gates are formed to minimize current flow differences between a current flowing from the first layer to the plurality of mesas at a first applied gate bias and a current flowing from the first layer to the plurality of mesas at a second applied gate bias when voltage is applied to the semiconductor device.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: March 4, 2014
    Assignee: Northrop Grummen Systems Corporation
    Inventor: John V. Veliadis