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:
Jan. 30, 1979
Filed:
Feb. 03, 1977
Applicant:
Inventors:
James G Aiken, Richardson, TX (US);
Benjamin J Sloan, Jr, Richardson, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
148175 ; 2957 / ; 29578 ; 29580 ; 148-15 ; 148187 ; 156647 ; 156648 ; 156649 ; 156662 ; 357 44 ; 357 46 ; 357 50 ; 357 52 ; 357 55 ; 357 92 ;
Abstract
An integrated injection logic circuit, wherein the inverted, multi-collector transistor of each cell includes active base regions separated by dielectric isolation, and wherein a heavily-doped channel-stop layer is selectively located along the sidewalls of the isolation, to prevent collector-to-emitter surface inversion leakage. The isolated geometry substantially reduces parasitic capacitance between the substrate and the extrinsic base, thereby increasing the switching speed of the device.