Showa Denko K.k.

Tomoyuki Takei

Takeshi Igarashi

Masumi Kuritani

Yu Gao

Hiroshi Uchida

Hisayuki Miki

Kenzo Hanawa

Takaharu Hoshina

Yuko Sakata

By sequentially performing: a step (I) of dissolving fullerene Cin a polyalkylene glycol to prepare a fullerene solution; a step (II) of immersing a material carbon fiber in the fullerene solution; and a step (III) of extracting the carbon fiber from the fullerene solution, washing the extracted carbon fiber with water, and drying the carbon fiber washed with water, a carbon fiber on which fullerene Cadsorbs is obtained.

Carbon fiber and method of manufacturing same

By sequentially performing: a step (I) of dissolving fullerene Cin an organic solvent to prepare a fullerene solution; a step (II) of immersing a material carbon fiber in the fullerene solution; and a step (III) of extracting the carbon fiber from the fullerene solution and drying the extracted carbon fiber, a carbon fiber on which fullerene Cadsorbs is obtained.

A carbon fiber is obtained by sequentially performing: a step (I) of dissolving a fullerene mixture including fullerenes Cand Cin an organic solvent to prepare a fullerene solution; a step (II) of immersing a material carbon fiber in the fullerene solution; and a step (III) of extracting the carbon fiber from the fullerene solution and drying the extracted carbon fiber.

A light emitting unit () is provided with a resin container () in which a recessed portion () is formed, an anode lead portion () and a cathode lead portion () which are provided so as to be exposed on the bottom surface of the recessed portion (), a semiconductor light emitting element () attached to the cathode lead portion () on the bottom surface () of the recessed portion (), and a sealing resin () provided so as to cover the recessed portion (). The resin container () is produced from a white resin containing titania as a coloring agent. The anode lead portion () and the cathode lead portion () are each configured by forming a silver-plated layer with the gloss level set in the range of 0.3-1.0 inclusive on a metal plate based on a copper alloy or the like. Thus, the efficiency of extraction of light outputted from the light emitting unit is improved.

Light emitting unit, light emitting module, and display device

A light-emitting chip () includes: a container () having a concave portion (); first to fourth lead portions () to (), provided to be exposed to the concave portion (); and a first blue LED to a fourth blue LED () mounted on the first to fourth lead portions () to () exposed to the concave portion (). The container () includes a first container portion () covering the region of the concave portion () where the first to fourth lead portions () to () are not exposed, and a second container portion () contacting the first to fourth lead portions () to () without being exposed to the concave portion () and accommodating the first container portion (). The first container portion () is formed of a material having higher light reflectivity than that of the second container portion (), and the second container portion () is formed of a material having higher thermal conductivity than that of the first container portion (). Thus, a decrease in extraction efficiency for light emitted from a light-emitting element can be suppressed, and a rise in the temperature of the light-emitting element in response to the light emission can be suppressed.

Light-emitting device, light-emitting module, and method for manufacturing light-emitting device

A resin composition for sealing a light-emitting device of the present invention includes a silsesquioxane resin including two or more oxetanyl groups, a cationic polymerization initiator and a metal oxide fine particle. Furthermore, a lamp of the present invention includes a package equipped with a sealing member, an electrode exposed in the bottom portion of the sealing member, and a light-emitting device arranged on the bottom portion and electrically connected with the electrode, wherein the light-emitting device is sealed with the resin composition for sealing a light-emitting device filled in the sealing member.

Resin composition for sealing light-emitting device and lamp

A resin composition for sealing a light-emitting device of the present invention includes a silsesquioxane resin including two or more oxetanyl groups, an aliphatic hydrocarbon including one or more epoxy groups and a cationic polymerization initiator. Furthermore, a lamp of the present invention includes a package equipped with a cup-shaped sealing member, an electrode exposed in the bottom portion of the sealing member, and a light-emitting device arranged on the bottom portion and electrically connected with the electrode, wherein the light-emitting device is sealed with the above-described resin composition for sealing a light-emitting device filled in the sealing member.

Growing community of inventors

Ichihara, Japan

Tomoyuki Takei