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
Sub-LUN input/output profiling for SSD devices
Modified binding proteins inhibiting the VEGF-A receptor interaction
Dihydronaphthyridinyl(organo)methanone analogs as positive allosteric mGluR5 modulators
Stepped delay control of integrated switches
Visual physician office systems and methods
System and method for providing location and access network information support in a network environment
Data center management unit with improved disaster prevention and recovery
  Randomly Featured Patents
Electrical interconnection system having retention and shorting features
System, method and program product for management of life sciences data and related research
Ionization probe interface circuit with high bias voltage source
Method of manufacturing a polyacetylene conjugate polymer
Tenter clip
Stain decorated glass-ceramic article
Ink cartridge for ink-jet printing apparatus
Fast matching for content-based addressing
Coronary vein lead having combination fixation features with lumen restriction and method therefor
Systems and methods for forming an isolated transformer