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, 1993
Filed:
Nov. 04, 1992
Tatsuhiro Watanabe, Kawasaki, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
A semiconductor memory device includes respective regions of a column decoder and a sense amplifier drive circuit arranged to lie opposite to each other on a semiconductor chip, respective regions of a memory cell array, a column gate and a sense amplifier arranged between the regions of the column decoder and the sense amplifier drive circuit, a plurality of column selection lines led out from the region of the column decoder, connected to respective column gate portions of the region of the column gate, and collected and arranged with units of groups of a predetermined number above the region of the column gate so as to have a smaller arrangement pitch than that of the column gate portion, and at least one sense amplifier drive signal line led out from the region of the sense amplifier drive circuit, connected to respective sense amplifier portions of the region of the sense amplifier, and arranged above the region of the sense amplifier so as to lie next to each group of the column selection lines. By the constitution, it is possible to constitute the memory device without any problem or difficulty from a viewpoint of the layout thereof even if it is a large capacity memory such as a 16 M-bit DRAM.