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:
Oct. 27, 2015
Filed:
Mar. 09, 2012
Norio Tasaki, Akita, JP;
Hidetaka Yamada, Akita, JP;
Hiroyuki Togawa, Setagaya-ku, JP;
DOWA ELECTRONICS MATERIALS CO., LTD., Tokyo, JP;
Abstract
A semiconductor light emitting diode of the present invention includes a semiconductor layer including a light emitting portion, and a pad electrode located on the semiconductor layer, the semiconductor light emitting diode further including, between the semiconductor layer and the pad electrode, a reflective portion including a light transmitting insulating layer serving as a current blocking layer located on the semiconductor layer, and a reflective layer located on the light transmitting insulating layer; a contact portion formed from an ohmic electrode in contact with the reflective portion, located on the semiconductor layer; and a conductive hard film between the reflective layer and the pad electrode, the conductive hard film having HV×t>630, where the Vickers hardness is HV (Hv) and the thickness is t (μm).