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:
Mar. 18, 1986
Filed:
Jun. 29, 1984
Applicant:
Inventors:
Gary R Hueckel, Wappingers Falls, NY (US);
George S Prokop, Fishkill, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
357 68 ; 357 65 ; 357 67 ; 357 71 ; 357 34 ;
Abstract
An emitter contact structure is disclosed for alleviating forward bias beta degradation in a bipolar transistor. The structure comprises emitter contact metallurgy which travels over a dielectric insulating layer having an area of increased thickness adjacent to the area of contact between the metallurgy and the emitter.