The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 1982
Filed:
Feb. 19, 1981
Applicant:
Inventor:
King Owyang, Baldwinsville, NY (US);
Assignee:
General Electric Company, Syracuse, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 34 ; 357 20 ; 357 36 ; 357 38 ;
Abstract
A power transistor having improved turn-off characteristics and enhanced reversed second breakdown capabilities is described wherein the emitter of the transistor includes first and second regions, the first region being disposed within the second region and having lower gain than the second region. Turn off is enhanced as essentially no current flows under the lower gain first region during turn off thereby facilitating the removal of excess charge carriers when the device is in the turn-off stage.