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. 14, 2015
Filed:
Mar. 18, 2013
Applicant:
SK Hynix Inc., Icheon-si, Gyeonggi-do, KR;
Inventors:
Assignee:
SK Hynix Inc., Gyeonggi-do, KR;
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/498 (2006.01);
U.S. Cl.
CPC ...
H01L 23/498 (2013.01); H01L 2924/0002 (2013.01);
Abstract
A semiconductor device includes a substrate in which a cell region and a contact region are defined, a pad structure including a plurality of first conductive layers and a plurality of first insulating layers formed alternately with each other in the contact region of the substrate, wherein an end of the pad structure is patterned stepwise, portions of the first conductive layers exposed at the end of the pad structure are defined as a plurality of pad portions, and the plurality of pad portions have a greater thickness than unexposed portions of the plurality of first conductive layers.