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:
Nov. 18, 2025
Filed:
Sep. 20, 2022
Denso Corporation, Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Mirise Technologies Corporation, Nisshin, JP;
Hamamatsu Photonics K.k., Hamamatsu, JP;
National University Corporation Tokai National Higher Education and Research System, Nagoya, JP;
Masatake Nagaya, Nisshin, JP;
Hiroki Watanabe, Nisshin, JP;
Junji Ohara, Nisshin, JP;
Daisuke Kawaguchi, Hamamatsu, JP;
Keisuke Hara, Hamamatsu, JP;
Chiaki Sasaoka, Nagoya, JP;
Jun Kojima, Nagoya, JP;
Shoichi Onda, Nagoya, JP;
DENSO CORPORATION, Kariya, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
MIRISE Technologies Corporation, Nisshin, JP;
HAMAMATSU PHOTONICS K.K., Hamamatsu, JP;
National University Corporation Tokai National Higher Education and Research System, Nagoya, JP;
Abstract
A semiconductor chip includes a chip-constituting substrate having one surface, the other surface opposite to the one surface, and two pairs of opposing side surfaces connecting the one surface and the other surface. The one surface and the other surface are along one of a {c-plane, a {-m-plane, and a {-a-plane. One of the two pairs of opposing side surfaces is along another one of the {c-plane, the {-m-plane, and the {-a-plane. The other of the two pairs of opposing side surfaces is along the other of the {c-plane, the {-m-plane, and the {-a-plane. The side surface includes an altered layer containing gallium oxide and gallium metal in a surface layer portion in a depth direction which is a normal direction to the side surface.