Resources Contact Us Home
Trench gate type VDMOSFET device with thicker gate insulation layer portion for reducing gate to source capacitance

Image Number 16 for United States Patent #8129779.

A semiconductor device according to the present invention includes a semiconductor layer. A first conductivity type region is formed on a base layer portion of the semiconductor layer. A body region of a second conductivity type is formed on the semiconductor layer to be in contact with the first conductivity type region. A trench in which a gate electrode is embedded through a gate insulating film is formed on the semiconductor layer. The trench penetrates through the body region, so that a deepest portion thereof reaches the first conductivity type region. A source region of the first conductivity type is formed on a surface layer portion of the semiconductor layer around the trench. The gate insulating film includes a thick-film portion having a relatively large thickness on a bottom surface of the trench.

  Recently Added Patents
Sports helmet
Bioreactor device, and method and system for fabricating tissues in the bioreactor device
Audio and music data transmission medium and transmission protocol
Helmet mandible
System and method for burst separation and extended interleaving length
Method for producing carrier on which microorganisms capable of conducting multiple parallel mineralization are immobilized, column reactor and solid medium for cultivating plants
Method for testing multi-chip stacked packages
  Randomly Featured Patents
Socket assembly for multiple size wrenching surfaces
Methods and compounds for treating autoimmune and vascular disease
Medical devices having polymeric regions with copolymers containing hydrocarbon and heteroatom-containing monomeric species
Engine idling load control means
Optical glass, precision press-molding preform and optical element
Film having gas permeability
Method of monitoring a broadcast channel for a page at a mobile communication device
Floating eyeball pad
Signal transmission system for transmitting a plurality of information signals through a plurality of transmission channels
Engine mounting structure under an aircraft wing