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. 12, 2017
Filed:
Aug. 05, 2015
Applicant:
SK Hynix Inc., Gyeonggi-do, KR;
Inventors:
Sung Lae Oh, Chungcheongbuk-do, KR;
Dae Sung Eom, Chungcheongbuk-do, KR;
Assignee:
SK Hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/07 (2006.01); H01L 27/11573 (2017.01); H01L 27/11526 (2017.01); H01L 27/11548 (2017.01); H01L 27/11556 (2017.01); H01L 27/11575 (2017.01); H01L 27/11582 (2017.01);
U.S. Cl.
CPC ...
H01L 27/11573 (2013.01); H01L 27/11526 (2013.01); H01L 27/11548 (2013.01); H01L 27/11556 (2013.01); H01L 27/11575 (2013.01); H01L 27/11582 (2013.01);
Abstract
A semiconductor memory device to which a Peri Under Cell (PUC) structure is applied is disclosed. The semiconductor memory device includes a word line multilayered structure formed in a cell region, and extending from across the cell region; and a slimming region including a step-shaped pad structure in the word line multilayered structure.