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. 07, 2015
Filed:
Feb. 08, 2012
Applicant:
Kazuhisa Ukai, Kyoto, JP;
Inventor:
Kazuhisa Ukai, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 11/24 (2006.01); H01L 27/105 (2006.01); G11C 5/02 (2006.01); G11C 11/412 (2006.01); G11C 29/12 (2006.01); H01L 27/02 (2006.01); H01L 27/108 (2006.01); H01L 27/11 (2006.01); G11C 11/4099 (2006.01);
U.S. Cl.
CPC ...
H01L 27/105 (2013.01); G11C 5/025 (2013.01); G11C 11/412 (2013.01); G11C 29/1201 (2013.01); H01L 27/0207 (2013.01); H01L 27/10894 (2013.01); H01L 27/10897 (2013.01); H01L 27/1104 (2013.01); H01L 27/1116 (2013.01); G11C 11/4099 (2013.01);
Abstract
A semiconductor memory device includes a memory array including a plurality of element blocks; the plurality of element blocks including end-portion element blocks arranged at an end portion of the memory array, and at least one dummy block disposed adjacent to the end-portion element blocks, the at least one dummy block being not in practical use. A layout pattern of the at least one dummy block is configured to correspond to only a portion of a layout pattern of the plurality of element blocks.