Toray Industries, Inc.

Daisaku Tanaka

Takeshi Ikeda

Yasunori Ichihashi

Hirotoshi Sakaino

Tsuyoshi Tominaga

Masaaki Umehara

Kazumasa Nagao

Guangnan Jin

Peng Wang

Takeshi Arai

Takeshi Ishigaki

Atsushi Ikeda

Shinichi Matsuki

Takuya Nishiyama

Fangrong Xu

Lingzhi Zhong

Kazunori Sugimoto

Tsubasa Hamano

Yohei Nakano

Yoshikazu Sato

Masahito Nishiyama

Tatsuya Kanzaki

Koji Ueoka

Keizo Udagawa

Tsubasa Okano

Yuka Tatematsu

Jincai Li

Takashi Tokuda

Kojiro Naito

Kazuki Kobayashi

Nanako Izumi

Manami Kitamura

A pyrromethene-boron complex that can be used as a red light fluorescent material with improved emission efficiency and color purity is provided. A pyrromethene-boron complex represented by the following general formula (1) and satisfying at least one of (A) and (B) is provided:

Pyrromethene boron complex, light emitting element using same, display device, lighting device, color conversion composition, color conversion film, color conversion substrate, light source unit and display

A light-emitting device is described that includes a plurality of partially drivable light sources, and a color conversion component configured to convert at least part of incident light from at least part of the light sources and emit outgoing light falling in a different wavelength region from the incident light, where the color conversion component includes a pyrromethene derivative.

Light-emitting device, display and color conversion substrate

The present invention provides an organic thin film light-emitting element having improved light-emitting efficiency and durable service life. The compound of the present invention has the structure represented by general formula (1) below. In general formula (1), Aris an aromatic group having a specific structure, and Aris a separate aromatic group having a specific structure. n is an integer of 1 or 2, and p is an integer of 1 or 2. However, n+p=3. When n is 2, each Armay be the same or different, and when p is 2, each Armay be the same or different. However, Arand Arare not the same group. 

Compound, light-emitting element containing the same, display device, and lighting device

The present invention provides an organic light-emitting element, comprising a substrate, a first electrode, more than one organic layer film comprising a light-emitting layer, and a second electrode. The light-emitting element further comprises a cover layer. The cover layer is located on the second electrode, and comprises a high refractive layer and a low refractive layer. A material for the low refractive layer of the cover layer is a boron complex organic small molecular compound. The organic light-emitting element provided by the present invention can achieve high light-emitting efficiency and color reproducibility. The organic light-emitting element of the present invention can be used for an organic EL display, a backlight source of a liquid crystal display, illumination, a sign board, an identification lamp, etc.

Organic light-emitting element

An organic luminescent material suitable for color conversion material used for a liquid crystal display or LED lighting, excellent in luminous efficiency and durability, to which a pyrromethene-boron complex or a color conversion composition containing the pyrromethene-boron complex contributes, is provided.

Pyrromethene-boron complex, color-changing composition, color-changing film, light source unit including same, display, and lighting

A color conversion film converts incident light into light with a wavelength longer than that of the incident light. The color conversion film is a laminate film including the following Layer(A) and Layer (B):

Color conversion film and light source unit including the same, display, and lighting apparatus

A color conversion composition converting incident light to light having a longer wavelength than the incident light, and containing the following components (A)-(C): (A) at least one luminescent material; (B) a binder resin; and (C) at least one of tertiary amines, catechol derivatives and nickel compounds, in which the tertiary amines, the catechol derivatives and the nickel compounds have a molar extinction coefficient &#x3b5; of 100 or less over the whole wavelength range from 400 nm to 800 nm is provided. This color conversion composition achieves a good balance between improvement of color reproducibility and durability if used for a liquid crystal display or an LED lighting device.

Color conversion composition, color conversion film and backlight unit, display and lighting device each comprising same

Provided are an aromatic amine compound as represented by formula (1), used for improving light extraction efficiency and color purity of an organic light-emitting element, an organic light-emitting element material containing the aromatic amine compound, an organic light-emitting element covering layer material containing the aromatic amine compound, and an organic light-emitting element containing the aromatic amine compound. The organic light-emitting element achieves high light-emitting efficiency and color reproducibility. The organic light-emitting element can be used as organic EL display, backlight source for liquid crystal display, illumination, light source for measurement devices, indication board or identification lamp etc. The organic light-emitting element significantly improves light extraction efficiency and has superior color purity.

Aromatic amine compound, light-emitting element materials and light-emitting element

An organic light-emitting element, including a substrate, a first electrode, a light-emitting layer containing one organic or more layer film, and a light-emitting element of a second electrode are disclosed. The light-emitting element is provided with a covering layer. For the organic material contained in covering layer, at least one point in the wavelength range between 430 nm and 460 nm the attenuation coefficient is greater than 0.10 while in the wavelength range of 460 nm to 500 nm its attenuation coefficient is 0.10 or below. The organic light-emitting element achieves high light-emitting efficiency and color reproducibility, and can be used as organic EL display, backlight source for liquid crystal display, illumination, light source for measurement devices, indication board or identification lamp etc.

A color conversion composition includes the following Component (A) and Component (B): where Y is a divalent saturated aliphatic hydrocarbon group having at least one of a tertiary carbon and a quaternary carbon, where Rand Reach represent hydrogen or a Corganic group; Rand Rmay be the same as or different from each other.

Color conversion composition, color conversion sheet and light source unit including the same, display, lighting apparatus, backlight unit, LED chip, and LED package

The purpose of the present invention is to provide an organic thin-film luminescent element which exhibits improved luminous efficiency, drive voltage and durability life. This fluoranthene derivative is characterized by having a specific structure that contains a fluoranthene skeleton.

Fluoranthene derivative, light-emitting device material containing same, and light-emitting device

The present invention provides an organic thin film light emitting device having high luminous efficiency and durable life realized by using a benzindolocarbazole derivative as represented by either general formula (1-1) or (1-2) given below: [Chemical compound 1] wherein Rto Rmay be identical to or different from each other and are selected from the group consisting of a hydrogen atom, alkyl group, cycloalkyl group, heterocyclic group, amino group, alkenyl group, cycloalkenyl group, alkynyl group, alkoxy group, alkylthio group, aryl ether group, aryl thioether group, aryl group, heteroaryl group, halogen atom, carbonyl group, carboxyl group, oxycarbonyl group, carbamoyl group, silyl group, and &#x2014;P(&#x2550;O)RR; Rand Rrepresent either an aryl group or a heteroaryl group; Rand Rmay be condensed to form a ring; Lto Lindependently represent a single bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group; and Ato Aindependently represent an amino group, aryl group, heterocyclic group, or heteroaryl group.

Benzindolocarbazole derivative, light-emitting element material produced using same, and light-emitting element

Provided are a light emitting device material which contains a compound having a carbazole skeleton of a specific structure and which makes it possible to achieve a light emitting device having both high luminance efficiency and durability; and a light emitting device using the light emitting device material.

Light emitting device material and light emitting device

Disclosed is an organic electroluminescent element which has achieved both high luminous efficiency and low driving voltage by containing a light-emitting element material, which comprises a specific pyrene compound, in one of the layers that constitute the light-emitting element, preferably in a light-emitting layer or in an electron-transporting layer. The pyrene compound may have the following general formula: 

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Otsu, Japan

Daisaku Tanaka