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:
Dec. 18, 2012
Applicant:
SK Hynix Inc., Gyeonggi-do, KR;
Inventor:
Jeong-Seob Oh, Gyeonggi-do, KR;
Assignee:
SK Hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/00 (2006.01); H01L 29/00 (2006.01); H01L 29/788 (2006.01); H01L 29/66 (2006.01); H01L 27/115 (2006.01);
U.S. Cl.
CPC ...
H01L 29/788 (2013.01); H01L 29/66825 (2013.01); H01L 29/7881 (2013.01); H01L 27/11521 (2013.01);
Abstract
A nonvolatile memory device includes gate structures formed over a substrate, each gate structure including a tunnel insulating layer, a floating gate, an inter-gate dielectric layer, and a control gate that are sequentially stacked, a protective layer formed on sidewalls of the floating gate, and a second insulating layer covering the gate structures and having an air gap formed between the gate structures, wherein an adhesive strength between the second insulating layer and the protective layer is smaller than an adhesive strength between the second insulating layer and the gate structure.