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:
Aug. 20, 2024
Filed:
Sep. 09, 2021
Kioxia Corporation, Tokyo, JP;
Yasuhito Yoshimizu, Kawasaki Kanagawa, JP;
Kaori Umezawa, Fujisawa Kanagawa, JP;
Kosuke Takai, Yokohama Kanagawa, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A semiconductor device includes a substrate, a first stacked film and a second stacked film each including insulating layers and electrode layers alternately provided on the substrate, and columnar portions provided in the insulating layers and electrode layers of the first stacked film, and including charge storage layers and semiconductor layers. The second stacked film further includes an insulator including first and second lower faces, the first lower face is inclined by a first angle to an upper face of one of the electrode layers in the first stacked film, the second lower face is inclined by a second angle to the upper face of the one of the electrode layers in the first stacked film, and the second angle is less than the first angle. The insulating layers and electrode layers in the second stacked film are provided below the first and second lower faces of the insulator.