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. 07, 2014
Filed:
Mar. 01, 2011
Akira Fujimoto, Kanagawa-ken, JP;
Koji Asakawa, Kanagawa-ken, JP;
Ryota Kitagawa, Tokyo, JP;
Takanobu Kamakura, Kanagawa-ken, JP;
Shinji Nunotani, Tokyo, JP;
Eishi Tsutsumi, Kanagawa-ken, JP;
Masaaki Ogawa, Kanagawa-ken, JP;
Akira Fujimoto, Kanagawa-ken, JP;
Koji Asakawa, Kanagawa-ken, JP;
Ryota Kitagawa, Tokyo, JP;
Takanobu Kamakura, Kanagawa-ken, JP;
Shinji Nunotani, Tokyo, JP;
Eishi Tsutsumi, Kanagawa-ken, JP;
Masaaki Ogawa, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor light emitting device includes a structural body, a first electrode layer, an intermediate layer and a second electrode layer. The structural body includes a first semiconductor layer of first conductivity type, a second semiconductor layer of second conductivity type, and a light emitting layer between the first and second semiconductor layers. The first electrode layer is on a side of the second semiconductor layer opposite to the first semiconductor layer; the first electrode layer includes a metal portion and plural opening portions piercing the metal portion along a direction from the first semiconductor layer toward the second semiconductor layer, having an equivalent circular diameter not less than 10 nanometers and not more than 5 micrometers. The intermediate layer is between the first and second semiconductor layers in ohmic contact with the second semiconductor layer. The second electrode layer is electrically connected to the first semiconductor layer.