Agc Inc.

Asahi Glass Company, Limited

The University of Tokyo

Soko Kagaku Co., Ltd.

Soko Kagau Co., Ltd.

Japan Atomic Energy Agency

Inter-university Research Institute Corporation High Energy Accelerator Research Organization

Yoshihiko Sakane

Ko Aosaki

Akira Hirano

Masamichi Ippommatsu

Masahiro Ito

Yosuke Nagasawa

Yuki Suehara

Yuji Suzuki

Hideki Sato

Daisuke Shirakawa

Yasuhide Kawaguchi

Atsushi Koyanagi

Yuki Hatanaka

Nobuhiko Sarukura

Ryujiro Yamasaki

Fumiko Nakayama

Takenao Shinohara

Takashi Ino

A light-emitting devicecomprises a base, a nitride semiconductor light-emitting elementflip-chip mounted on the base, and an amorphous fluororesin sealing the nitride semiconductor light-emitting element. The light-emitting devicecomprises a deformation-prevention layerfor preventing a shape change of an amorphous fluororesin by heat treatment after shipment of the light-emitting device, and the deformation-prevention layeris formed of a layer in which a thermosetting resin or an ultraviolet curing resin is cured, and the cured layer directly covers the surface of the amorphous fluororesin.

Light-emitting device

The ultraviolet light-emitting device includes a base, a nitride semiconductor ultraviolet light-emitting element flip-chip mounted on the base, and a lens for sealing a nitride semiconductor ultraviolet light-emitting element to focus or diffuse light emitted from the nitride semiconductor ultraviolet light-emitting device. The lens is composed of an amorphous fluororesin in which a structural unit of a polymer or copolymer has a fluorine-containing aliphatic cyclic structure and a terminal functional group is a perfluoroalkyl group, and a density of the amorphous fluororesin is higher than 2.11 g/cm.

Ultraviolet light-emitting device, method for manufacturing ultraviolet light-emitting device and method for manufacturing ultraviolet light-emitting module

A coating composition which contains a fluorinated polymer having a unit (1) represented by &#x2014;[CXX&#x2014;CY(Rf&#x2014;COOM)]&#x2014; and a fluorinated compound represented by CXX&#x2550;CY(Rf&#x2014;COOM), wherein the content of the fluorinated compound is from 0.1 to 8.0 parts by mass per 100 parts by mass of the fluorinated polymer. X, X, Xand Xare H, F or Cl, Yand Yare H, F, Cl, a methyl group or a trifluoromethyl group, Rfand Rfare a perfluoroalkylene group which may contain an etheric oxygen atom between carbon-carbon atoms, or an oxyperfluoroalkylene group which may contain an etheric oxygen atom between carbon-carbon atoms, &#x2014;COOMis &#x2014;COOH or &#x2014;COOZ, and &#x2014;COOMis &#x2014;COOH or &#x2014;COOZ(wherein Zand Zare an ammonium ion in which the hydrogen atom may be substituted). The coating composition is suitable for forming a thin antireflection coating layer without increasing its refractive index.

Coating composition, and process for producing photoresist laminate

Provided is an adhesive for use in an ultraviolet-light-emitting device using ultraviolet light having a wavelength of from 200 to 400 nm as a light source, which can attach adherends made of a polymer having a fluorine-containing alicyclic structure with excellent adhesiveness which is unlikely to be impaired by exposure to such ultraviolet light or heat. An adhesive for forming an adhesive joint in an ultraviolet-light-emitting device, which is either the following adhesive (A) or the following adhesive (B) comprising a fluoropolymer having a fluorine-containing alicyclic structure:

Ultraviolet-light-emitting device with adhesive having low glass transition temperature

To provide an electret whose surface potential is improved and an electrostatic induction conversion device comprising the same, an electret is formed by spin-coating a fluorine-containing polymer composition for coating which contains a fluorine-containing polymer having a ring structure in its main chain, a silane coupling agent, an aprotic fluorine-containing solvent, and a fluorine-containing alcohol as a protic fluorine-containing solvent on a copper substrate and baking it.

Electret and electrostatic induction conversion device comprising the same

A mold and a process for producing a base material having a transferred micropattem, wherein the mold comprises a transparent substrate having chemical bonds resulting from functional groups (x) on a surface on which an interlayer (A) is formed, the interlayer (A) present between the surface of the transparent substrate and a surface layer (B) which has a micropattem for molding a photocurable resin, wherein interlayer (A) is a layer made of a fluoropolymer (1) which is a fluoropolymer having a fluorinated alicyclic structure in its main chain and which has reactive groups (y) reactive with functional groups (x), and surface layer (B) is a layer made of a fluoropolymer (2) which is a fluoropolymer having a fluorinated alicyclic structure in its main chain and which has substantially no reactive groups (y).

Mold, and process for producing base material having transferred micropattern

Materials transparent to terahertz waves are very limited, and it is difficult to obtain the required performance by selecting the material. Further, it is also difficult to search for a novel material. Therefore, by letting a known material transparent to terahertz waves have a photonic crystal structure and controlling the structure, an optical waveguide having the required properties is provided. An optical waveguide for propagation of far-infrared radiation in the terahertz region, which optical waveguide is made of a fluorinated amorphous polymer. Particularly preferred is a polymer having a fluorinated aliphatic ring structure in its main chain, obtained by cyclopolymerization of a fluorinated monomer having at least two polymerizable double bonds.

Optical waveguide

Growing community of inventors

Tokyo, Japan

Yoshihiko Sakane