Toyoda Gosei Co., Ltd.

Tatsuya Takashima

Yoshinobu Suehiro

Yuji Takahashi

Hideaki Kato

Atsuo Hirano

Mitsuhiro Inoue

Hideki Mori

Hitomi Kawano

A counter reflecting surface is provided opposite to a light emitting element in its light emitting surface. A side reflecting member having an inclined reflecting surface is provided apart from and so as to surround the light emitting element. A phosphor layer is provided on the counter reflecting surface and the reflecting surface of the side reflecting member.

Light emitting diode

A light emitting diode has: a ceramics substrate that has a high thermal conductivity; a light emitting element that is mounted on the ceramics substrate; and a radiation plate that is bonded to the back surface of the ceramics substrate. The radiation plate contacts the ceramics substrate at a contact region that includes a region of the back surface of the ceramics substrate corresponding to a region of the ceramics substrate on which the light emitting element is mounted.

Light emitting diode and light emitting diode array

In a light emitting diode, a blue light emitting element is mounted on a base having a cup through a phosphor-containing mount so that the light emitting element is located within the cup and is mounted on the bottom of the cup through the phosphor-containing mount. The light emitting diode includes a light emitting element and a p electrode. By virtue of the above construction, blue light emitted from the light emitting element can be reflected from the lower surface of the p electrode without being radiated directly from the upper surface of the light emitting element to the outside of the light emitting diode. As a result, the blue light emitted from the light emitting element can be efficiently mixed with yellow light given off from the phosphor in the phosphor-containing mount to provide white light which is radiated to the outside of the light emitting diode with high efficiency. The white light can be perceived by a viewer to be uniformly radiated from the light radiating surface of the light emitting diode.

Growing community of inventors

Aichi-ken, Japan

Tatsuya Takashima