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:
Dec. 10, 1996
Filed:
Jun. 21, 1993
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518515 ; 36518509 ; 36518514 ; 36518518 ; 365201 ; 257319 ; 257320 ;
Abstract
A programmable EEPROM cell structure consisting in a split-gate structure in series with a coupling capacitor between the floating gate and an additional program gate in order to provide enhanced injection efficiency. The electron injection is controlled by a control gate at the source side. The area of the coupling capacitor is selected with a substantial coupling factor to a high voltage onto the floating gate during programming so as to produce hot-electron injection at the split point in the channel region between the control gate and the floating gate. Submicrosecond programming at a 5 V drain voltage can thereby be achieved.