Soko Kagaku Co., Ltd.

Asahi Glass Company, Limited

Shoko Nagai

Akira Hirano

Masamichi Ippommatsu

Yuta Furusawa

Kiho Yamada

Ko Aosaki

Naoki Morishima

An ultraviolet light emitting device having high quality and high reliability is provided by preventing deterioration of electrical characteristics which is associated with an ultraviolet light emission operation and caused by a sealing resin. The ultraviolet light emitting device is an ultraviolet light emitting device including: an ultraviolet light emitting element () composed of a nitride semiconductor; and an ultraviolet-transparent sealing resin () covering the ultraviolet light emitting element (), wherein at least a specific portion () of the sealing resin (), which is in contact with pad electrodes () and () of the ultraviolet light emitting element (), is a first type amorphous fluororesin, a terminal functional group of a polymer or a copolymer that forms the first type amorphous fluororesin is a COOH group or a COOR group which is a reactive terminal functional group bondable to a metal that forms the pad electrodes () and (), and a light emission wavelength range in the ultraviolet light emitting element () exists on a longer-wavelength side as compared to the long-wavelength edge of an absorption wavelength range in the amorphous fluororesin.

Ultraviolet light emitting device

An ultraviolet light emitting device having high quality and high reliability is provided by preventing deterioration of electrical characteristics which is associated with an ultraviolet light emission operation and caused by a sealing resin. The ultraviolet light emitting device is an ultraviolet light emitting device including: an ultraviolet light emitting element () formed of a nitride semiconductor; and an ultraviolet-transparent sealing resin () covering the ultraviolet light emitting element (), wherein at least a specific portion () of the sealing resin (), which is in contact with pad electrodes () and () of the ultraviolet light emitting element (), is a first type amorphous fluororesin, and a terminal functional group of a polymer or a copolymer that forms the first type amorphous fluororesin is a nonreactive terminal functional group which is not bondable to a metal that forms the pad electrodes () and ().

Ultraviolet light emitting device using metal non-bondable amorphous fluororesin molding compound

Growing community of inventors

Aichi, Japan

Shoko Nagai