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:
Feb. 14, 2023
Filed:
Aug. 21, 2020
Applicant:
Kioxia Corporation, Minato-ku, JP;
Inventors:
Assignee:
Kioxia Corporation, Minato-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/11582 (2017.01); G11C 16/04 (2006.01); H01L 27/11565 (2017.01);
U.S. Cl.
CPC ...
H01L 27/11582 (2013.01); G11C 16/0483 (2013.01); H01L 27/11565 (2013.01);
Abstract
A semiconductor memory device comprises a semiconductor, a first insulator, a second insulator, a first conductor, a third insulator, a fourth insulator, and a fifth insulator. The first insulator is on the semiconductor. The second insulator is on the first insulator. The third insulator is on the first conductor. The fourth insulator is between the second insulator and the first conductor. The fifth insulator is provided between the second insulator and the third insulator. The fifth insulator is having an oxygen concentration different from an oxygen concentration of the fourth insulator.