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:
Jul. 08, 1980
Filed:
Nov. 30, 1978
Applicant:
Inventors:
Hing C Chu, Liverpool, NY (US);
William H Sahm, III, Syracuse, NY (US);
Robert I Chen, Beaverton, OR (US);
Assignee:
General Electric Company, Auburn, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
357 19 ; 357 30 ; 357 35 ; 357 36 ; 357 68 ;
Abstract
A bilateral optically coupled phototransistor includes an infrared emitting diode coupled with a light sensitive transistor. The transistor includes symmetrical interdigitated emitter and collector regions separated by a light sensitive base. Diffused, epitaxial and thermal gradient migration structures are described. Applications are illustrated for variable resistor and analog switch modes of operation.