Abstract:
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.
Abstract:
A color conversion composition as a mode of the present invention is a color conversion composition that contains the following Component (A) and Component (B) and converts incident light into light with a wavelength longer than that of the incident light. This color conversion composition and a color conversion sheet containing the same are used for a light source unit, a display, a lighting apparatus, a backlight unit, an LED chip, and an LED package. Component (A): an organic light-emitting material; and Component (B): at least one of a polyester resin having a partial structure represented by General Formula (1) in its molecular structure and a resin containing a bisphenol structure represented by General Formula (2): (5O-Y-O)5 (1) (where Y is a divalent saturated aliphatic hydrocarbon group having at least one of a tertiary carbon and a quaternary carbon) (where R 1 and R 2 each represent hydrogen or a C 1-20 organic group; R 1 and R 2 may be the same as or different from each other).
Abstract:
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 ε 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.
Abstract:
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. 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 430nm and 460nm the attenuation coefficient is greater than 0.10 while in the wavelength range of 460nm to 500nm 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 identificaion lamp etc.
Abstract:
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 R 1 to R 24 may 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 -P(=O)R 25 R 26 ; R 25 and R 26 represent either an aryl group or a heteroaryl group; R 25 and R 26 may be condensed to form a ring; L 1 to L 4 independently represent a single bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group; and A 1 to A 4 independently represent an amino group, aryl group, heterocyclic group, or heteroaryl group.
Abstract:
Provided is a phenanthroline derivative having a specific structure. The phenanthroline derivative includes in a skeleton a substituted or unsubstituted heteroaryl group having electron-accepting nitrogen, and a substituted or unsubstituted aryl group having less than 20 ring-forming carbon atoms. The phenanthroline derivative is preferably used in electronic devices such as light emitting elements, photoelectric conversion elements, lithium ion batteries, fuel cells and transistors.
Abstract:
The purpose of the present invention is to provide an organic thin film light emitting element which has all of improved luminous efficiency, improved driving voltage and improved durability life. A light emitting element material of the present invention is characterized by containing a specific compound that has a fluoranthene skeleton.
Abstract:
A luminescent element having high luminous efficiency, high color purity, and a long service life can be produced by using a compound having a specific dibenzochrysene skeleton as a dopant material or a hole injection material for an organic electroluminescent element.