Resources Contact Us Home
Power semiconductor device and method of manufacturing the same

Image Number 6 for United States Patent #7554155.

A power semiconductor device has a first main electrode formed along a surface of a substrate, a first semiconductor layer of first conductive type electrically connected to the first main electrode, a cyclic structure section which is formed on the first semiconductor layer and has second semiconductor layers of first conductive type and third semiconductor layers of second conductive type alternately and cyclically formed along the surface of the substrate, a fourth semiconductor layer of second conductive type selectively formed on a part of the second and third semiconductor layers, a fifth semiconductor layer of first conductive type selectively formed on the fourth semiconductor layer, a second main electrode contacted the fourth and fifth semiconductor layers, a control electrode disposed adjacent via a first insulating film on the second, fourth and fifth semiconductor layers, and a depletion layer blocking section which is formed outside of the cyclic structure section and prevents a depletion layer from spreading outside, wherein the depletion layer blocking section includes a conductive layer formed via a second insulating film in a first trench formed outside of the outermost third semiconductor layer in the cyclic structure section.

  Recently Added Patents
System with wireless network device and method for processing wireless network profile
System for treatment of skin conditions using at least one narrow band light source in a skin brush having an oscillating brushhead
In-water voltage gradient detector
Method and apparatus for storing and transporting portable stationary sheet flow water rides
Dicing tape-integrated film for semiconductor back surface
Resistive random access memory and method for manufacturing the same
  Randomly Featured Patents
Ring type hydraulic tensioner
Centrifugal casting mold
Semi-insulating gallium arsenide single crystal
Industrial controller interface providing standardized object access to proprietary software objects that interact with industrial controllers
Polyester resins capable of forming containers having improved gas barrier properties
Anti-slip footlet sock
Method and apparatus for reducing uranium trioxide
Hand and finger exercise and strengthening device and method of exercising and strengthening same
Valved catheter