Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method of fabricating power semiconductor device for suppressing substrate recirculation current










Image Number 3 for United States Patent #7888226.

A power semiconductor device has a first region in which a transistor is formed, a third region in which a control element is formed, and a second region for separating the first region and the third region. The power semiconductor device includes a substrate of a first conductive type and a semiconductor region of a second conductive type arranged on the substrate, and a highly-doped buried layer of the second conductive type and a highly-doped bottom layer of the first conductive type are arranged between the substrate and the semiconductor region, and the first highly-doped bottom layer of the first conductive type is arranged on a top side and a bottom side of the highly-doped buried layer in the first region and extends by a predetermined distance to the second region, and a first isolation region is arranged on the highly-doped bottom layer extending from the first region in the second region, and a highly-doped region of the second conductive type is arranged on the highly-doped buried layer, and a second isolation region is arranged on a second highly-doped bottom layer of the first conductive type . By such structure, parasitic bipolar junction transistors in the first isolation region and the second isolation region can be electrically separated from the third region.








 
 
  Recently Added Patents
Vending machine
Signal transfer apparatus
Controller with screen
Preserving privacy of digital communication information
Method and device for detecting the dysfunction of a gas pressure sensor in a vehicle tire
Mobile communication device and method for providing positioning information
Anti-GITR antibodies
  Randomly Featured Patents
Semiconductor device and manufacturing method of the same
Roof tile
Method for producing agglomerated boron carbide
Method of medical treatment of myasthenia
Medical lead coil conductor with spacer element
Carrying cases with pop-out compartments
Device for the low-deformation support of an optical element and method for the low-deformation support of the optical element
Hard disk drive apparatus having a flexible printed circuit with a plurality of traces in a specified order
Security enclosures
Electronic revenue meter with automatic service sensing