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. 20, 2014
Filed:
Mar. 15, 2012
Kimitaka Yoshimura, Fukuoka-ken, JP;
Katsuhiko Nishitani, Fukuoka-ken, JP;
Akihiro Fujiwara, Fukuoka-ken, JP;
Kimitaka Yoshimura, Fukuoka-ken, JP;
Katsuhiko Nishitani, Fukuoka-ken, JP;
Akihiro Fujiwara, Fukuoka-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, in a semiconductor light emitting device, a substrate includes a first surface, a second surface opposite to the first surface, lateral surfaces intersected with the first surface and the second surface, first regions each provided on the lateral surface, and second regions each provided on the lateral surface. Each of the first regions has a first width and a first roughness. Each of the second regions has a second width smaller than the first width and a second roughness smaller than the first roughness. The first regions and the second regions are alternately arranged. A proportion of the sum of the first widths to a distance between the first surface and the second surface is 0.5 or more. A semiconductor laminated body is provided above the first surface of the substrate, and includes a first semiconductor layer, an active layer and a second semiconductor layer.