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:
Jun. 28, 2022
Filed:
Aug. 24, 2020
Kioxia Corporation, Tokyo, JP;
Shigeki Hattori, Kawasaki Kanagawa, JP;
Tomomasa Ueda, Yokohama Kanagawa, JP;
Keiji Ikeda, Kawasaki Kanagawa, JP;
KIOXIA CORPORATION, Tokyo, JP;
Abstract
A semiconductor device of an embodiment includes: a first oxide semiconductor layer including a first region, a second region, and a third region between the first region and the second region; a gate electrode; a gate insulating layer provided between the third region and the gate electrode; a first electrode electrically connected to the first region; a second electrode electrically connected to the second region; and a second oxide semiconductor layer provided in at least one of a position between the first region and the first electrode and a position between the second region and the second electrode and containing indium (In), aluminum (Al), and zinc (Zn), an atomic ratio of aluminum to a sum of indium, aluminum, and zinc being 8% or more and 23% or less, and an atomic ratio of indium to the sum of indium, aluminum, and zinc being 45% or less.