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:
Mar. 16, 2021
Filed:
Dec. 05, 2019
Nichia Corporation, Anan, JP;
Shinichi Daikoku, Tokushima, JP;
Daisuke Sanga, Tokushima, JP;
NICHIA CORPORATION, Anan, JP;
Abstract
A light emitting device includes: light emitting cells arranged in column and row directions, each including a semiconductor stack including a first semiconductor layer and a second semiconductor layer; a first insulation layer continuously disposed on the light emitting cells and having, in each light emitting cell, a first hole on the first semiconductor layer exposed from the second semiconductor layer and a second hole on the second semiconductor layer; a wiring electrode having light reflectivity, covering the first insulation layer, and electrically connected with the first semiconductor layer at the first hole in each light emitting cell; and a second electrode disposed in each light emitting cell and electrically connected with the second semiconductor layer at the second hole. The first insulation layer is exposed from the first semiconductor layer between the light emitting cells. The lower face of the first semiconductor layer has a roughened surface.