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. 18, 2021
Filed:
Feb. 21, 2020
Ngk Insulators, Ltd., Nagoya, JP;
Takayuki Hirao, Nisshin, JP;
Hirokazu Nakanishi, Nagoya, JP;
Mikiya Ichimura, Ichinomiya, JP;
Takanao Shimodaira, Nagoya, JP;
Masahiro Sakai, Nagoya, JP;
Takashi Yoshino, Ama, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
A layer of a crystal of a groupnitride selected from gallium nitride, aluminum nitride, indium nitride and the mixed crystals thereof has an upper surface and a bottom surface. The upper surface of the crystal layer of the groupnitride includes a linear high-luminance light-emitting part and a low-luminance light-emitting region adjacent to the high-luminance light-emitting part, observed by cathode luminescence. The high-luminance light-emitting part includes a portion extending along an m-plane of the crystal of the groupnitride.