Hitachi Maxell, Limited

Toshihiro Yamanaka

Hiroyuki Tsukamoto

Katsusuke Shimazaki

Eiji Koyama

Kiyoharu Kishimoto

Yoichi Ogawa

Masataka Sato

A lighting device includes a plurality of self-luminous elements formed on a substrate and emitting different wavelengths of light from each other, a hemispherical lens structure formed on the substrate to cover the self-luminous elements, and a plurality of translucent spherical particles covering a surface of the lens structure. Light emitted from the self-luminous elements passes through the lens structure and enters the translucent spherical particles where its direction is largely inclined to scatter due to a difference in refractive index between the translucent spherical particles and air. Consequently, different wavelengths of light from the self-luminous elements are mixed to produce a desired color of light.

Lighting device and display apparatus

A semiconductor light-emitting device according to an embodiment of the present invention includes chip LEDs formed on a silicon submount, in which a wiring pattern having a chip connecting terminal portion connecting the chip LEDs, an external connecting terminal portion connecting an external unit, and a plurality of lead portions connecting a corresponding chip connecting terminal portion and a corresponding external connecting terminal portion is formed on the silicon submount, and an area of the chip connecting terminal portions is made larger than an area of a region where the chip connecting terminal portion overlaps with the chip LEDs. Accordingly, a semiconductor light-emitting device of high heat radiation property and heat resistance can be provided.

Semiconductor light-emitting device, semiconductor light-emitting module, and method of manufacturing the semiconductor light-emitting module

Growing community of inventors

Ibaraki, Japan

Toshihiro Yamanaka