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:
Apr. 24, 2001
Filed:
May. 15, 2000
Applicant:
Inventor:
Yoshiko Higashide, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 1/100 ;
U.S. Cl.
CPC ...
G11C 1/100 ;
Abstract
In the semiconductor memory device, the size in the row direction of the memory cell region having no through-hole therein is made smaller than that of the memory cell region having a through-hole therein. Thus, even if the semiconductor memory device has a double-layered bit line configuration and the size in the row direction of the memory cell region increases due to the through-hole connecting the bit lines in the first and second layers or the like, it is possible to prevent the increase in size of the memory cell region, and hence, the increase in area of the memory cell array.