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. 02, 1999
Filed:
Mar. 03, 1998
Applicant:
Inventors:
Takahiro Onakado, Hyogo, JP;
Natsuo Ajika, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518511 ; 36518526 ; 36518529 ;
Abstract
A memory cell transistor connects its drain with a corresponding subbit line. In a program operation, a selected subbit line is connected to a program main bit line. In a read operation, a selected subbit line is connected with the base of a bipolar transistor, so that a channel current of a selected memory cell transistor flows as a base current. The bipolar transistor amplifies this base current, and controls a current flowing through a read main bit line.