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:
Sep. 14, 2010
Filed:
Jan. 17, 2007
Vladislav Vashchenko, Palo Alto, CA (US);
Vladimir Kuznetsov, Santa Clara, CA (US);
Peter J. Hopper, San Jose, CA (US);
Vladislav Vashchenko, Palo Alto, CA (US);
Vladimir Kuznetsov, Santa Clara, CA (US);
Peter J. Hopper, San Jose, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
In a SiGe BJT process, a diode is formed by defining a p-n junction between the BJT collector and BJT internal base, blocking the external gate regions of the BJT and doping the emitter poly of the BJT with the same dopant type as the internal base thereby using the emitter contact to define the contact to the internal base. Electrical contact to the collector is established through a sub-collector or by means of a second emitter poly and internal base both doped with the same dopant type as the collector.