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:
Oct. 06, 2026
Filed:
Jul. 03, 2023
Japan Display Inc., Tokyo, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Hajime Watakabe, Tokyo, JP;
Masashi Tsubuku, Tokyo, JP;
Toshinari Sasaki, Tokyo, JP;
Takaya Tamaru, Tokyo, JP;
JAPAN DISPLAY INC., Tokyo, JP;
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Abstract
A semiconductor device includes a oxide semiconductor layer provided on an insulating surface and having a channel area, a source area and a drain area sandwiching the channel area, a gate electrode opposite the channel area, and a gate insulating layer provided between the oxide semiconductor layer and the gate electrode, wherein the gate electrode is an oxide conductive layer having the same composition as the oxide semiconductor layer, and the oxide conductive layer includes the same impurity element as the source area and the drain area.