Dowa Electronics Materials Co., Ltd.

Nippon Telegraph and Telephone Public Corporation

Sharp Kabushiki Kaisha Corporation

Oki Electric Industry Co., Ltd.

Yutaka Ohta

Hiroshi Tanabe

Masahiko Aiba

Yoichi Shimazawa

Yuji Sumitomo

Yasuo Ohno

Rikuo Takano

Tatsunori Toyota

Kotaro Kato

Yoshikazu Oshika

Haruo Mori

Yoshikazu Ooshika

To provide a light emitting element, having: a lamination structure including a first conductive layer and a second conductive layer with a light emitting layer interposed between them; a groove structure in which the second conductive layer and the light emitting layer are divided into large and small two parts; a second conductive electrode pad that is electrically connected to the second conductive layer on the divided larger second conductive layer, a first conductive electrode pad on the divided smaller second conductive layer, and two or more electrical contacts connected to the first conductive layer so as to be independent from each other, by a conductive wiring extending to the first conductive layer, with the first conductive electrode pad as a start point.

Light emitting element and method for manufacturing the same

An object of the present invention is to provide a nitride semiconductor light-emitting device in which contact resistance generated between an n-contact layer and an n-side electrode is effectively reduced while maintaining satisfactory external quantum efficiency, and a method of efficiently producing the nitride semiconductor light-emitting device. Specifically, the present invention characteristically provides a nitride semiconductor light-emitting device having a semiconductor laminated body including an n-type laminate, a light-emitting layer and a p-type laminate, and an n-side electrode and a p-side electrode, characterized in that: the n-type laminate includes an n-contact layer made of an AlGaN material (0.7&#x2266;x&#x2266;1.0) and an n-clad layer provided on the n-contact layer; and an interlayer made of an AlGaN material (0&#x2266;y&#x2266;0.5) is provided on a partially exposed portion, on the light-emitting layer side, of the n-contact layer.

Nitride semiconductor light-emitting element and method of manufacturing the same

A semiconductor element is disclosed having a layered body of a first conductivity type, a light emitting layer, a layered body of a second conductivity type, a constriction layer having a constriction hole, and a first electrode having a lighting hole, a second electrode positioned such that charge traveling between the first and second electrodes passes through the light emitting layer. The constriction hole area is larger than the lighting hole area, and the lighting hole and the constriction hole expose a part of the layered body of the second conductivity type. A mirror is positioned such that the mirror receives light emitted from the light emitting layer that passes through the layered body of the first conductivity type, and the mirror is constructed to have a high reflection ratio for light having peak wavelengths between 200 nm to 350 nm.

Light emitting semiconductor

The semiconductor device comprises a semiconductor substrate, a plurality of spaced active elements, for example, of a planer type formed on one surface of the substrate, and a supporting plate bonded to the opposite surface of the substrate. A groove is cut through the substrate to reach the supporting plate for isolating the active elements.

High voltage integrated semiconductor devices using a thermoplastic

A vertical tabulation control for a high speed printer comprises a presettable memory, such as a random access memory (RAM), for storing vertical tabulation addresses, a counter for counting the number of line feed operations, a comparator for developing a continuous line feed termination command when the contents of the counter reach the preset vertical tabulation address, and a rechargeable battery means which is charged when the printer is activated through a power switch. The rechargeable battery supplies the presettable memory and the counter with a necessary voltage for maintaining their contents when the power supply through the power switch is terminated.

Vertical tabulation control for high speed printer

Growing community of inventors

Tokyo, Japan

Yutaka Ohta