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:
Aug. 10, 1999
Filed:
Aug. 18, 1998
Applicant:
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, US;
Primary Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ; G11C / ;
U.S. Cl.
CPC ...
365149 ; 365150 ; 365187 ; 365188 ; 36518908 ;
Abstract
A semiconductor memory device includes cells arranged in a matrix formation. Each of the cells includes a driver transistor, a read transistor which is controlled by a read word line and outputs read data read from the cell to a read bit line, a write transistor which is controlled by a write word line and supplies write data supplied from a write bit line to a cell capacitor connected to a gate of the driver transistor, and a column write select transistor which is controlled by a column write select signal line and is connected to the write transistor in series. The write data is supplied to the cell capacitor via both the column write select transistor and the write transistor.