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:
May. 20, 2025
Filed:
Mar. 04, 2022
Semiconductor device, semiconductor memory device, and method for manufacturing semiconductor device
Kioxia Corporation, Tokyo, JP;
Tomoki Ishimaru, Yokkaichi Mie, JP;
Shinji Mori, Nagoya Aichi, JP;
Kazuhiro Matsuo, Kuwana Mie, JP;
Keiichi Sawa, Yokkaichi Mie, JP;
Kenichiro Toratani, Yokkaichi Mie, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A semiconductor device of an embodiment includes a first electrode, a second electrode, a first oxide semiconductor layer between the first electrode and the second electrode, the first oxide semiconductor layer containing in, Zn, and a first metal element, and the first metal element being at least one metal of Ga, Mg, or Mn, a second oxide semiconductor layer between the first oxide semiconductor layer and the second electrode, the second oxide semiconductor layer containing In, Zn, and the first metal element, a third oxide semiconductor layer between the first oxide semiconductor layer and the second oxide semiconductor layer, the third oxide semiconductor layer containing in, Zn, and a second metal element, the second metal element being at least one metal of Al, Hf, La, Sn, Ta, Ti, W, Y, or Zr, a gate electrode facing the third oxide semiconductor layer, and a gate insulating.