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:
Apr. 07, 2026
Filed:
Oct. 07, 2022
Applicant:
Sandisk Technologies Llc, Addison, TX (US);
Inventors:
Peter Rabkin, Cupertino, CA (US);
Masaaki Higashitani, Cupertino, CA (US);
Assignee:
Sandisk Technologies, Inc., Milpitas, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H10B 43/27 (2023.01); H10B 41/27 (2023.01);
U.S. Cl.
CPC ...
H10B 43/27 (2023.02); H10B 41/27 (2023.02);
Abstract
A three-dimensional memory device includes an alternating stack of insulating layers and electrically conductive layers, a memory opening vertically extending through the alternating stack, and a memory opening fill structure located in the memory opening and including a memory film and a vertical composite metal oxide semiconductor channel that contains an outer semiconducting metal oxide channel layer having a first band gap and an inner semiconducting metal oxide channel layer having a second band gap that is different from the first band gap.