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. 27, 2025
Filed:
Dec. 21, 2023
Kioxia Corporation, Tokyo, JP;
Yasuhito Yoshimizu, Yokkaichi Mie, JP;
Hiroshi Nakaki, Yokkaichi Mie, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A semiconductor storage device includes first and second stacks, and first to fourth semiconductor layers. The first stack includes first conductive layers and first insulating layers alternately stacked in a first direction. The first semiconductor layer extends through the first stack. The second semiconductor layer extends in a second direction above the first stack and connected to the first semiconductor layer. The second stack includes second conductive layers and second insulating layers alternately stacked in the first direction. The first and second stacks are arranged in a third direction. The third semiconductor layer extends through the second stack. The fourth semiconductor layer extends in the second direction above the second stack and connected to the third semiconductor layer. A third conductive layer is in contact with upper surfaces of the second and fourth semiconductor layers. The second and fourth semiconductor layers are separated from each other in the third direction.