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:
Jun. 16, 2026
Filed:
Jan. 06, 2023
Kioxia Corporation, Tokyo, JP;
Hiroaki Kosako, Yokkaichi Mie, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor storage device includes word lines stacked in a first direction with bit lines above word lines in the first direction. A plurality of select gate lines are between the word lines and the bit lines in the first direction, and a semiconductor layer extends through the word lines and select gate lines. A charge storage film is between the word lines and the first semiconductor layer. The plurality of select gate lines includes a first select gate line closest to the word lines with a first thickness and second select gate line between the first select gate line and the bit lines with a second thickness. The first thickness is less than the second thickness.