Patent application number | Description | Published |
20080290795 | ORGANIC ELECTROLUMINESCENCE DEVICE - Provided is an organic electroluminescence device in which a reduction in luminance is suppressed and a lifetime is significantly improved. The object is achieved by an organic electroluminescence device having organic compound layers including an organic emitting layer, which is interposed between at least one pair of electrodes, in which the organic emitting layer is formed of an organic compound material containing an impurity composed of a hydroxyl group-containing compound at a concentration of less than 0.15% by mass, and a method of selecting an organic compound material for the organic electroluminescence device, the method including: determining the content of the impurity; and selecting an organic compound material in which the content is less than 0.15% by mass so that the material is used for forming the organic emitting layer. Provided are a coating film-forming ink, a method of forming a thin film, and a method of producing an organic electroluminescence device. | 11-27-2008 |
20090021160 | MATERIAL FOR ORGANIC ELECTROLUMINESCENT DEVICE, METHOD FOR PRODUCING SAME AND ORGANIC ELECTROLUMINESCENT DEVICE - A material for an organic electroluminescence device which can be a cis-isomer or a trans-isomer of structural isomers, the content of the trans-isomer being more than that of the cis-isomer. The ratio (t/c) of the trans-isomer (t) and the cis-isomer (c) is preferably 2 or more. | 01-22-2009 |
20110226992 | ORGANIC ELECTROLUMINESCENT MATERIAL COMPOSITIONS - An organic electroluminescence material composition including an organic electroluminescence material and a solvent, the organic electroluminescence material being a naphthacene derivative, and the solvent being a solvent which is represented by the following formula (1). | 09-22-2011 |
20120037890 | PYRROMETHENE-BORON COMPLEX COMPOUNDS AND ORGANIC ELECTROLUMINESCENT ELEMENTS USING SAME - A pyrromethene-boron complex compound represented by the following formula (1); | 02-16-2012 |
20120223295 | BISCARBAZOLE DERIVATIVES AND ORGANIC ELECTROLUMINESCENCE - Provided are an organic electroluminescence device having high current efficiency and a long lifetime, and a biscarbazole derivative for realizing the device. The biscarbazole derivative has a specific substituent. The organic EL device has a plurality of organic thin-film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin-film layers contains the biscarbazole derivative. | 09-06-2012 |
20120299473 | AMINOANTHRACENE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT FORMED USING SAME - There are provided an aminoanthracene derivative having an end substituent, such as a dibenzofuran ring, that is bonded at a position other than the 2-position in the formula (1) to anthracene through a nitrogen atom, and an organic electroluminescent device containing a cathode and an anode, and therebetween one or plural organic thin film layers containing at least a light emitting layer, at least one layer of the organic thin film layers containing the aminoanthracene derivative. The organic electroluminescent device has a long lifetime and a high luminous efficiency. (In the formula, R | 11-29-2012 |
20130306955 | NITROGENATED HETEROCYCLIC DERIVATIVE, ELECTRON-TRANSPORTING MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENTS, AND ORGANIC ELECTROLUMINESCENT ELEMENT USING SAME - A specific nitrogen-containing heterocyclic compound having a urea structure, an electron transporting material containing the nitrogen-containing heterocyclic compound, and an organic electroluminescence device including a light emitting layer and an electron transporting layer between a cathode and an anode in which the electron transporting layer includes the electron transporting material or the nitrogen-containing heterocyclic derivative. An organic EL device exhibiting high emission efficiency even at low voltage and a material for organic EL devices are described. | 11-21-2013 |
20140061602 | ORGANIC ELECTROLUMINESCENCE DEVICE - An organic electroluminescence device contains an anode and a cathode facing each other, and intervening therebetween at least two hole transporting layers and a light emitting layer sequentially, and one of the hole transporting layers contains a compound having a particular structure having a fluorene structure at the center thereof, and is not adjacent to the light emitting layer. The organic electroluminescence device has a hole transporting layer having an increased thickness, is capable of being controlled in the thickness of the optical film, and has an enhanced device capability. | 03-06-2014 |
20140110692 | ORGANIC ELECTROLUMINESCENT ELEMENT - An organic electroluminescence device includes a first organic thin-film layer and a second organic thin-film layer between an anode and a cathode opposing the anode in this order from the anode side. The first organic thin-film layer includes a specific aromatic heterocyclic derivative A, and the second organic thin-film layer includes a specific aromatic heterocyclic derivative B. The aromatic heterocyclic derivative A and the aromatic heterocyclic derivative B are different from each other. The organic electroluminescence device is capable of driving at a low voltage and has a long lifetime. | 04-24-2014 |
20140312331 | BISCARBAZOLE DERIVATIVES AND ORGANIC ELECTROLUMINESCENCE - Provided are an organic electroluminescence device having high current efficiency and a long lifetime, and a biscarbazole derivative for realizing the device. The biscarbazole derivative has a specific substituent. The organic EL device has a plurality of organic thin-film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin-film layers contains the biscarbazole derivative. | 10-23-2014 |