Patent application number | Description | Published |
20090026923 | Organic metal complex and its use in organic electroluminescent device - Disclosed are an organic electroluminescent device (organic EL device) that is improved in luminous efficiency and fully assured of driving stability and has a simple structure and an organic metal complex suitable therefor. The organic metal complex is represented by the following general formula (I) | 01-29-2009 |
20090153031 | Heterocyclic compound and organic electroluminescent device using the same - Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of driving stability, and simple in structure and also disclosed is a heterocyclic compound useful for the said device. Specifically, the heterocyclic compound is represented by the following general formula (I) and the organic EL device comprises an organic layer containing the said heterocyclic compound. In general formula (I), X | 06-18-2009 |
20090295276 | Organic Electroluminescent Device - Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully assured of driving stability, and simple in constitution. The organic electroluminescent device comprises a hole-transporting layer, a light-emitting layer, and an electron-transporting layer disposed between an anode and a cathode piled one upon another on a substrate and the light-emitting layer contains a phosphorescent dopant and an indolocarbazole compound of specific structure. Examples of the indolocarbazole compound are N,N′-diphenylindolocarbazole and bis(N-phenylindolo)carbazole. | 12-03-2009 |
20100044695 | COMPOUND FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE - Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of driving stability, and of simple constitution. Also disclosed is a compound useful for the fabrication of said organic EL device. The organic electroluminescent device comprises organic layers including a light-emitting layer disposed between an anode and a cathode which are piled one upon another on a substrate and said organic layers comprise a compound represented by general formula (1). A light-emitting layer containing a phosphorescent dopant is suitable for an organic layer comprising a compound represented by general formula (1). In general formula (1), X is CR or N; Ar | 02-25-2010 |
20100127616 | COMPOUND FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE - Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of driving stability, and of simple constitution. Also disclosed is a compound useful for the fabrication of said organic EL device. The organic electroluminescent device comprises organic layers including a light-emitting layer disposed between an anode and a cathode which are piled one upon another on a substrate and at least one of said organic layers comprises a compound for an organic EL device represented by general formula (1). Said organic layer is preferably a light-emitting layer containing a phosphorescent dopant. In general formula (1), X is a substituted or unsubstituted methine group or a nitrogen, Ar | 05-27-2010 |
20100148161 | COMPOUND FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE - Disclosed are an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of driving stability, and of simple constitution and a compound useful for the fabrication of said organic EL device. The compound for the organic EL device has an indolocarbazole structure or a structure similar thereto in the molecule wherein an aromatic group is bonded to the nitrogen atom in the indolocarbazole. The organic EL device has a light-emitting layer disposed between an anode and a cathode piled one upon another on a substrate and said light-emitting layer comprises a phosphorescent dopant and the aforementioned compound for an organic electroluminescent device as a host material. | 06-17-2010 |
20100148162 | COMPOUND FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE - Disclosed are a compound for an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of driving stability, and of simple constitution and an organic EL device using said compound. The compound for an organic EL device has two indolocarbazole skeletons each of which is bonded to an aromatic group or two skeletons similar thereto. The organic EL device comprises a light-emitting layer disposed between an anode and a cathode piled one upon another on a substrate and said light-emitting layer comprises a phosphorescent dopant and the aforementioned compound for an organic EL device as a host material. | 06-17-2010 |
20100244013 | COMPOUND FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME - Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of driving stability, and of simple constitution. Also disclosed is a compound useful for the fabrication of said organic electroluminescent device. This compound for organic electroluminescent device is a bipyrimidyl compound which has a basic skeleton of 2,2′-bipyrimidyl and is substituted by an aromatic hydrocarbon group, an aromatic heterocyclic group, or a substituted amino group. The aforementioned organic electroluminescent device has a light-emitting layer between an anode and a cathode which are piled one upon another on a substrate and the light-emitting layer contains a phosphorescent dopant and the aforementioned bipyrimidyl compound as a host material. | 09-30-2010 |
20110024735 | COMPOUND FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME - Disclosed is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, fully secured of driving stability, and of simple structure. The organic EL device comprises a light-emitting layer between an anode and a cathode piled one upon another on a substrate and the light-emitting layer comprises a phosphorescent dopant and a compound containing carbazolyl groups at both ends represented by the following formula (1) as a host material. In formula (1), X is independently CH optionally containing a substituent or N and L is a direct bond, an ethylene group, or an acetylene group. | 02-03-2011 |
20110057184 | COMPOUND FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE - Disclosed is an organic electroluminescent device (organic EL device) that is improved in the luminous efficiency, fully secured of the driving stability, and of a simple structure and disclosed also is a compound useful therefor. The organic EL device comprises a light-emitting layer disposed between an anode and a cathode piled one upon another on a substrate and the said light-emitting layer comprises a phosphorescent dopant and an indolocarbazole derivative as a host material. The indolocarbazole derivative is represented by the following formula (3) wherein Ar is an aromatic group and L is a direct bond or an aromatic group. | 03-10-2011 |
20110062429 | COMPOUND FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE - Disclosed is an organic electroluminescent device (organic EL device) that is improved in the luminous efficiency, fully secured of the driving stability, and of a simple structure and also disclosed is a compound for organic EL device useful for the said device. The compound for organic EL device is, for example, an indolocarbazole derivative represented by the following general formula (3). The organic EL device comprises a light-emitting layer disposed between an anode and a cathode piled one upon another on a substrate and the said light-emitting layer comprises a phosphorescent dopant and the aforementioned indolocarbazole derivative as a host material. In general formula (3), L is an aromatic heterocyclic group of a fused-ring structure with a valence of (n+1), Ar | 03-17-2011 |
20110062862 | ORGANIC ELECTROLUMINESCENT DEVICE - Disclosed is an organic electroluminescent device (organic EL device) that is improved in the luminous efficiency, fully secured of the driving stability, and of a simple structure. The organic EL device comprises a light-emitting layer between an anode and a cathode piled one upon another on a substrate and the said light-emitting layer comprises (A) a phosphorescent dopant whose emission peak wavelength is longer than 600 nm and (B) a host material. The host material contains at least two kinds of compounds selected from two or more kinds of derivatives included in (b1) N-substituted indolocarbazole derivatives, (b2) derivatives of 8-hydroxyquinoline aluminum complex, and (b3) bisindolocarbazole derivatives. | 03-17-2011 |
20110253991 | ORGANIC ELECTROLUMINESCENCE DEVICE - [Problem to be Solved] To provide an organic electroluminescence device with heat resistance capable of being driven by a low voltage. | 10-20-2011 |
20110284828 | ORGANIC ELECTROLUMINESCENT DEVICE - Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of high driving stability, and of a simple structure. The organic EL device is constituted of an anode, organic layers containing a phosphorescent light-emitting layer, and a cathode piled one upon another on a substrate and a phosphine oxide derivative represented by general formula (1) is contained in a phosphorescent light-emitting layer, an electron-transporting layer, a hole-blocking layer, or an exciton-blocking layer. In general formula (1), L | 11-24-2011 |
20110315975 | MATERIAL FOR USE IN PHOSPHORESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE USING SAME - Provided is an organic electroluminescent device (organic EL device), in which the luminous efficiency of the device is improved, driving stability is sufficiently ensured, and the construction of the device is simple. This organic EL device is an organic electroluminescent device, including a light-emitting layer between an anode and a cathode laminated on a substrate, in which the light-emitting layer contains a phosphorescent light-emitting dopant and an indolocarbazole compound as a host material. Examples of the indolocarbazole compound include a compound represented by the following formula (1). It should be noted that in the formulae: a ring A and a ring B are represented by the formulae (1a) and (1b), respectively; Ar's each represent an aromatic hydrocarbon group or an aromatic heterocyclic group; R's each represent a hydrogen atom, an alkyl group, or a cycloalkyl group; X represents a methine group or a nitrogen atom; A represents an aromatic hydrocarbon group, an alkyl group, a cycloalkyl group, or a group represented by the formula (1c); and n represents 0 or 1. | 12-29-2011 |
20120007070 | ORGANIC ELECTROLUMINESCENT DEVICE - Provided is an organic electroluminescent device (organic EL device), which has improved luminous efficiency, shows sufficiently ensured driving stability, and has a simple construction. The organic electroluminescent device includes an anode, a cathode, and organic layers including a hole-transporting layer and a light-emitting layer, the organic layers being interposed between the anode and the cathode, in which the light-emitting layer contains a phosphorescent light-emitting material and the hole-transporting layer and the light-emitting layer have an electron- and/or exciton-blocking layer therebetween, the electron- and/or exciton-blocking layer being adjacent to the light-emitting layer and containing an indolocarbazole compound represented by the general formula (2). In the formula, a ring B represents a heterocycle represented by the formula (1c) to be fused with adjacent rings, Z represents an n-valent aromatic hydrocarbon group or an aromatic heterocyclic group, and n represents 1 or 2. | 01-12-2012 |