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:
Dec. 14, 1999
Filed:
Dec. 01, 1998
Koji Komatsu, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
The semiconductor memory device of this invention includes a plurality of blocks and an external bit line extending through the plurality of blocks in a column direction, wherein each of the plurality of blocks includes a plurality of bank regions each including a plurality of memory cells arranged in a matrix, the plurality of bank regions are arranged in the column direction, each of the plurality of blocks has a main bit line, the main bit line of each of the plurality of blocks extends through the plurality of bank regions in the column direction in parallel with the external bit line, to be shared by the plurality of bank regions, and the semiconductor memory device further includes a block selector for receiving a signal from outside for selecting one of the plurality of blocks and activating the main bit line corresponding to the selected block with the external bit line.