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:
Nov. 12, 1991
Filed:
Nov. 16, 1990
Applicant:
Inventors:
Albert H Taddiken, McKinney, TX (US);
Han-Tzong Yuan, Dallas, TX (US);
Hisashi Shichijo, Plano, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338334 ; 338307 ; 307201 ; 357 51 ;
Abstract
A programmable resistor 10 is provided having a resistive element 12. Resistive element 12 includes a substrate 26 formed by a layer of semiconductor of a first conductivity-type. A current path 32 is formed in substrate 26 by a layer of semiconductor of a second conductivity-type. An interface 36 having interfacial traps is formed between current path 32 and substrate 26. A backgate 24 is formed adjacent substrate 26. A first switch 14 selectively couples backgate 24 to a first voltage while a second switch 16 selectively couples backgate 24 to a second voltage.