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. 30, 1982
Filed:
Jan. 21, 1980
Applicant:
Inventors:
Kenneth M Bell, Princeton, TX (US);
Joe R Trogolo, Plano, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas County, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 22 ; 357 41 ; 357 52 ;
Abstract
A buried n-channel junction field-effect transistor (JFET) fabricated in standard bipolar integrated circuit starting material. The transistor has a deep p-well as the bottom gate formed in an n-type body. The source is surrounded by the p-well while the drain is the epitaxial layer near the surface of the body outside the p-well. A buried channel connects the source and drain. A p-layer above the buried channel forms the top gate. Gate leakage current and noise are very low.