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:
Sep. 01, 2026
Filed:
Mar. 05, 2024
Sandisk Technologies Llc, Addison, TX (US);
Hiroyuki Tanaka, Yokkaichi, JP;
Masanori Tsutsumi, Yokkaichi, JP;
Kento Sakane, Yokkaichi, JP;
Teruo Okina, Yokkaichi, JP;
Sandisk Technologies, Inc., Milpitas, CA (US);
Abstract
A memory die includes an alternating stack of insulating layers and electrically conductive layers, a dielectric spacer layer underlying the alternating stack, memory opening vertically extending through the alternating stack, and through the dielectric spacer layer, a memory opening fill structure located in the memory opening and including a dielectric core, a vertical semiconductor channel having a hollow portion which surrounds the dielectric core and a pillar portion which does not surround the dielectric core, and a memory film, and a source layer located under the dielectric spacer layer and contacting the pillar portion of the vertical semiconductor channel.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile