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. 08, 2023
Filed:
Apr. 07, 2022
Kioxia Corporation, Tokyo, JP;
Hiroshi Kanno, Yokkaichi, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
The semiconductor storage device of an embodiment includes a first conductive layer, a stack disposed above the first conductive layer and including a plurality of second conductive layers in a first direction, and a columnar body that extends in the first direction through the stack, and includes a semiconductor layer and a charge storage film provided between the plurality of conductive layers and the semiconductor layer. A first conductive layer out of the plurality of conductive layers is connected to the semiconductor layer, and the semiconductor layer includes a first region in which a concentration of an n-type impurity is higher than a concentration of a p-type impurity, a second region in which a concentration of a p-type impurity is higher than a concentration of an n-type impurity, and a third region contacted to the first conductive layer and disposed closer to the first region than the second region in the first direction.