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. 09, 1993
Filed:
Jun. 24, 1992
Applicant:
Inventor:
Masanori Noda, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365182 ; 365185 ; 365 63 ;
Abstract
According to this invention, a semiconductor non-volatile memory is formed as follows. In an EPROM memory array consisting of MIS transistors arranged in a matrix form, a first bit line consisting of polysilicon is connected to a drain region through a first contact formed in the drain region, a second bit line formed on the first bit line through an interlayer insulator by a metal film is connected to the first bit line by a second contact, and the second contact is formed on each source line of the memory array.