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:
Sep. 17, 2002
Filed:
Oct. 19, 2001
Hiroshi Tomotani, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The semiconductor memory device includes a memory cell array, a block selection circuit, a row decoder, a word driver, and a column decoder. The memory cell array includes a plurality of memory cells, a plurality of main word lines and a plurality of bit line pairs. The plurality of main word lines are provided corresponding to the rows, that is, m main word lines are provided per row (where m is an integer equal to or greater than two). The plurality of bit line pairs are provided corresponding to the columns. The memory cell array is divided into a plurality of memory blocks in the column direction. Each of the plurality of memory blocks further includes a plurality of sub word lines. The plurality of sub word lines are provided corresponding to the rows. Each of the plurality of sub word lines is connected to one of the m main word lines of the corresponding row.