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:
May. 09, 2017
Filed:
Jul. 30, 2015
Applicant:
SK Hynix Inc., Gyeonggi-do, KR;
Inventor:
Yeonghun Lee, Gyeonggi-do, KR;
Assignee:
SK Hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/04 (2006.01); G11C 16/08 (2006.01); G11C 16/10 (2006.01); H01L 27/11524 (2017.01); H01L 27/11582 (2017.01);
U.S. Cl.
CPC ...
G11C 16/08 (2013.01); G11C 16/0483 (2013.01); G11C 16/10 (2013.01); H01L 27/11524 (2013.01); H01L 27/11582 (2013.01);
Abstract
A semiconductor memory device includes a plurality of memory cells and an X-decoder. The plurality of memory cells are connected to a word line. The X-decoder is connected to the word line, and applies an operating voltage to the word line. In the semiconductor memory device, tunnel insulating layers included in the plurality of memory cells have different thicknesses according to distances of the plurality of memory cells from the X-decoder.