Showa Denko K.k.

Showa Denko Kabushiki Kaisha

Tamami Koyama

Hiroshi Suzuki

Ryuji Monden

Kunio Kondo

Takeshi Igarashi

Yoshiaki Takahashi

Naoko Ito

Masaru Tanaka

Koro Shirane

Hiroshi Yabu

Tetsuhiko Yamaguchi

Masatsugu Shimomura

Yoshikazu Hosoda

Motoaki Kamachi

Soyao Moriguchi

Masafumi Takebayashi

Masashi Sakaguchi

Disclosed is an organic light-emitting device which contains one or more organic layers sandwiched between an anode and a cathode, wherein at least one of the organic layers is a light-emitting layer including a polymer compound (I), the polymer compound (I) containing structural units derived from a hole transport or electron transport and phosphorescent polymerizable compound (a1) and structural units derived from a polymerizable compound (b) capable of transporting an oppositely charged carrier, the polymerizable compound (a1) being selected from formulae (E1-1) to (E1-39) as defined herein.

Organic light-emitting device using a compound having a carrier transport property and a phosphorescent property

The invention provides a method of producing an organic electroluminescent device comprising applying a composition containing an organic electroluminescent compound onto multiple electrodes to form an organic electroluminescent layer on each of the electrodes, wherein the substrate on which the composition is applied is a substrate with the portions between electrodes and/or the surface of the electrodes having been subjected to water-repellent treatment. By using this method, deterioration of a device and reduction in performance due to existence of an insulating layer which is indispensable for segregation of each polymer light-emitting compound in conventional process of applying polymer light-emitting compounds can be avoided.

Method of producing a display device

An organic electroluminescence device including one layer or two or more layers of organic layer sandwiched between an anode and a cathode. At least one of the organic layers includes a phosphorescent compound and a polymer. The polymer has a structural unit derived from a monomer represented by formula (1) as defined herein, and a structural unit derived from a monomer having heterocycle(s) containing two or more heteroatoms. 

Organic electroluminescence device using a copolymer and a phosphorescent compound

A smooth intermediate film layer having a thickness of 0.2 to 30 nm, little protrusions and a surface layer having high adhesiveness with the light-emitting layer is provided with accuracy on an anode constituting an organic electroluminescent device comprising a light-emitting compound layer present between an anode and a cathode. After the intermediate film layer is formed on the anode surface using a dry processing method by radio frequency plasma treatment or a wet processing method by a spin coating method and the like, preferably it is subjected to optimization treatment (washing) to adjust the smoothness, adhesiveness and thickness of the film. When the wet processing method is used, a surface treatment of the anode is preferably to be performed furthermore before forming the film to control the smoothness and surface conditions. Performing the treatment before and after forming the intermediate layer enables to control the thickness, smoothness and adhesiveness of the film and to obtain an organic electroluminescent device having high emission efficiency and long device life.

Organic electroluminescent device and production method thereof

The invention relates to a light-emitting material having high emitting efficiency, high luminance and durability for use in an organic light-emitting device and to an organic electroluminescent (EL) device, in which the light-emitting material is used. The light-emitting material contains a light-emitting substance which is spatially constricted and confined in an order of two dimensions or more, thus providing a high efficient organic light-emitting device based on emission of phosphorescence from an excited triplet state.

Light-emitting material and organic light-emitting device

A composite metallic materialaccording to the invention is used for, e.g., electrolytic capacitors, and includes a metallic material substrateand a high polymer thin layerhaving a fine patternformed on at least one surface of the substrateby self-organization. This high polymer thin filmis formed by, for example, drying hydrophobic organic solvent solution of high polymer compound. By subjecting this composite metallic materialto etching processing, etching pits are formed uniformly with high density based on the fine pattern.

Composite metal material and method for manufacturing the same, etched metal material and method for manufacturing the same and electrolytic capacitor

Enzyme activity is measured promptly with a high accuracy by introducing an enzyme, the activity of which is to be measured, into a column comprising a hollow tube packed with a filler comprising a support and a substrate that can be recognized by the enzyme, which is immobilized on the support, and measuring the amount of the obtained decomposition product of the substrate.

Growing community of inventors

Chiba, Japan

Tamami Koyama