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:
Jan. 23, 2024
Filed:
Feb. 24, 2021
Kioxia Corporation, Tokyo, JP;
Nobuaki Okada, Yokohama Kanagawa, JP;
Toshiki Hisada, Yokohama Kanagawa, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A semiconductor storage device includes first and second chips. The first chip includes a first semiconductor substrate, first conductive layers arranged in a first direction and extending in a second direction, a semiconductor column extending in the first direction and facing the first conductive layers, a first charge storage film formed between the first conductive layers and the semiconductor column, a plurality of first transistors on the first semiconductor substrate, and first bonding electrodes electrically connected to a portion of the plurality of first transistors. The second chip includes a second semiconductor substrate, a plurality of second transistors on the second semiconductor substrate, and second bonding electrodes electrically connected to a portion of the plurality of second transistors, and bonded to the first bonding electrodes. A thickness of the second semiconductor substrate in the first direction is smaller than a thickness of the first semiconductor substrate in the first direction.