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:
Mar. 21, 2023
Filed:
Sep. 10, 2020
Kioxia Corporation, Tokyo, JP;
Daisuke Hagishima, Tokyo, JP;
Fumitaka Arai, Yokkaichi, JP;
Keiji Hosotani, Yokkaichi, JP;
Masaki Kondo, Yokkaichi, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor memory device includes first and second semiconductor layers and a first conductive layer. The first and second semiconductor layers extend in a first direction. The second semiconductor layer is stacked above the first semiconductor layer in a second direction intersecting the first direction. The first conductive layer intersects the first and second semiconductor layers and extends in the second direction. The first conductive layer includes first and second portions intersecting the first and second semiconductor layers respectively. A width of the first portion in the first direction is smaller than a width of the second portion in the first direction. A thickness of the first semiconductor layer in the second direction is larger than a thickness of the second semiconductor layer in the second direction.