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. 31, 2022
Filed:
Jan. 07, 2020
Applicant:
Key Foundry Co., Ltd., Cheongju-si, KR;
Inventors:
Min Kuck Cho, Cheongju-si, KR;
Seung Hoon Lee, Busan, KR;
Assignee:
KEY FOUNDRY CO., LTD., Cheongju-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/11551 (2017.01); G11C 8/14 (2006.01); G11C 7/18 (2006.01); H01L 27/11519 (2017.01);
U.S. Cl.
CPC ...
H01L 27/11551 (2013.01); G11C 7/18 (2013.01); G11C 8/14 (2013.01); H01L 27/11519 (2013.01);
Abstract
A nonvolatile memory device includes a cell array formed on a substrate, and a control gate pickup structure, wherein the cell array comprises floating gates, and a control gate surrounding the floating gates, wherein the control gate pickup structure comprises a floating gate polysilicon layer, a control gate polysilicon layer surrounding the floating gate polysilicon layer and connected to the control gate, and at least one contact plug formed on the control gate polysilicon layer.