Citizen Electronics Co., Ltd.

Citizen Watch Company, Ltd.

Citizen Holdings Company, Ltd.

Eye Lighting Systems Corporation

Shingo Kuriki

Masahiro Watanabe

Kazuki Matsumura

Arata Shimozawa

Yu Kayanuma

Takakazu Yano

Yuji Omori

Nobuyuki Baba

Takahiro Mikami

Satoshi Abe

Yutaro Misawa

Takeshi Yoshida

Toshihisa Shirai

Light emitting diode

Provided is a light-emitting device in which a light-emitting region is increased in size without decreasing the yield. This light-emitting device includes a central light-emitting unit, and a plurality of peripheral light-emitting units arranged to fill a periphery of the central light-emitting unit, wherein each of the central light-emitting unit and the peripheral light-emitting units includes a substrate and light-emitting elements mounted on the substrate, and an area of the light-emitting region of each of the peripheral light-emitting units is equal to or smaller than an area of the light-emitting region of the central light-emitting unit.

Light-emitting device

A light-emitting apparatus including a mother board, and LED packages mounted on the mother board is provided. Each of the LED packages includes: a package substrate; light-emitting regions on the package substrate, the light-emitting regions being rotationally symmetric and each including LED devices, wherein at least some of the light-emitting regions and the other light-emitting regions emit light of different colors; and sets of package electrodes on the package substrate around the light-emitting regions, the sets of package electrodes being rotationally symmetric, wherein the package electrodes of each set correspond to cathodes and anodes of the light-emitting regions capable of emitting light independently of each other. The mother board includes, for each LED package, a set of mother-board electrodes connected to one of the sets of package electrodes of the LED package.

Light-emitting apparatus

Provided is a light-emitting module that achieves high brightness, whose electrode structure is simple and whose brightness distribution has rotational symmetry. The light-emitting module includes a substrate, a first electrode and a second electrode disposed on the substrate, LED devices connected between the first electrode and the second electrode, a dam member disposed on the substrate so as to surround the LED devices, and a phosphor-containing resin for sealing the LED devices by being filled into a region surrounded by the dam member on the substrate. The first electrode includes a first outer electrode disposed under the dam member and a first inner electrode disposed nearer to a center of the substrate than the first outer electrode is. The second electrode includes a second outer electrode disposed under the dam member and a second inner electrode disposed nearer to the center of the substrate than the second outer electrode is. The first outer electrode is disposed so as to oppose the second inner electrode. The second outer electrode is disposed so as to oppose the first inner electrode.

Light-emitting module

Provided is a light-emitting apparatus including a substrate, first and second pairs of terminals, each pair including two terminals disposed at two opposed positions on the substrate, a first plurality of light-emitting devices which are mounted in one of two sections formed by bisecting a mounting region on the substrate by a line segment jointing the two positions, and which are connected to the first pair of terminals, and a second plurality of light-emitting devices which are mounted in the other section of the mounting region, and which are connected to the second pair of terminals, and wherein the first and second plurality of light-emitting devices are arranged in a direction parallel to the line segment, and are each mounted at an angle relative to one side of the substrate.

Light source

Growing community of inventors

Yamanashi, Japan

Shingo Kuriki