Resources Contact Us Home
Method for manufacturing power switching devices

Image Number 11 for United States Patent #4370180.

A method for manufacturing power switching devices such as thyristors and power transistors comprising the steps of forming impurity diffused layers of one conductivity type and of the opposite conductivity type in a semiconductor substrate of one conductivity type; forming a film containing phosphorus on the substrate; diffusing lifetime killer atoms into the substrate; and forming electrodes on the substrate.

  Recently Added Patents
Systems and methods for parameter adaptation
Analysis device and an analysis apparatus using the analysis device
Group greeting card
Powerline communication device with load characterization functionality
Solution based precursors
Display screen with graphical user interface
Prioritizing application data for transmission in a wireless user device
  Randomly Featured Patents
Substituted 3-phenoxy-1-alkoxycarbonylalkylamino-propanol-2-s having beta receptor blocking properties
Gun sight for shooting moving target
Crystal polymorphism of aminoethylphenoxyacetic acid derivative
Serial frame processing system in which validation and transfer of a frame's data from input buffer to output buffer proceed concurrently
Payment card signal characterization methods and circuits
Ascites valve
Image display unit and method for manufacturing an image display unit
Method and apparatus for sharing map data associated with automated industrial vehicles
Positive allosteric modulators (PAM)
Front caster assembly for canister vacuum cleaner