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. 14, 2024
Filed:
Jul. 01, 2019
Sony Corporation, Tokyo, JP;
Kunihiko Tasai, Tokyo, JP;
Hiroshi Nakajima, Tokyo, JP;
Hidekazu Kawanishi, Tokyo, JP;
Katsunori Yanashima, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A light emitting device according to an embodiment of the present disclosure includes: a first layer including AlInGaN (0<x1<1, 0≤x2<1); a second layer that is provided on the first layer and includes AlInGaN (0<y1<1, 0≤y2<1) that is lattice relaxed with respect to the first layer; and a third layer that is provided on the second layer, includes AlInGaN (0<z1<1, 0≤z2<1) that is lattice relaxed with respect to the second layer, and includes an active layer. A lattice constant aGAN of GaN in an in-plane direction, a lattice constant al of the first layer in an in-plane direction, a lattice constant a2 of the second layer in an in-plane direction, and a lattice constant a3 of the third layer in an in-plane direction have a relationship of aGAN<a2<a1, a3.