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:
Apr. 02, 1991
Filed:
Mar. 21, 1989
Stefano Mazzali, Milan, IT;
SGS-Thomson Microelectronics S.r.l., Milan, IT;
Abstract
The memory matrix comprises parallel and alternating source and drain lines, floating gate areas placed between the source and drain lines and control gate lines parallel to each other and perpendicular to the source and drain lines superimposed on the floating gate areas. The floating gate areas are arranged in rows parallel to the source and drain lines in positions longitudinally staggered in relation to those of the adjacent row in such a manner that the floating gate areas of one row underlie a first plurality of control gate lines and the floating gate areas of the adjacent row underlie a second plurality alternating with the first of the control gate lines. The floating gate areas together with the adjacent source and drain lines and with the superimposed control gate lines define respective EPROM cells arranged in a staggered manner in the memory matrix.