Patent application number | Description | Published |
20080238307 | ORGANIC ELECTROLUMINESCENCE ELEMENT - An organic electroluminescence element is disclosed, which includes at least one organic compound layer including a light-emitting layer between a pair of electrodes, wherein the light-emitting layer contains a host material, a light-emitting material and a phosphine oxide compound. An organic electroluminescence element exhibiting high light-emission efficiency and having excellent drive durability is provided. | 10-02-2008 |
20080241518 | ORGANIC ELECTROLUMINESCENCE ELEMENT - An organic electroluminescence element having at least one organic layer including a light-emitting layer between a pair of electrodes, wherein the organic electroluminescence element has an electron transport layer containing a phosphine oxide compound and an electron transport layer that does not substantially contain the phosphine oxide compound between the light-emitting layer and a cathode, the electron transport layer containing the phosphine oxide compound is nearer to the cathode, and the electron transport layer that does not substantially contain the phosphine oxide compound is nearer to the light-emitting layer. An organic EL element that exhibits high light-emission efficiency and is excellent in drive durability is provided. | 10-02-2008 |
20090026936 | ORGANIC ELECTROLUMINESCENCE ELEMENT - An organic electroluminescence element including an organic layer including a light-emitting layer between a pair of electrodes, wherein the light-emitting layer contains at least two light-emitting materials having different Ea values and at least one host material, a concentration of a light-emitting material having a larger Ea value in the light-emitting layer gradually decreases from a cathode side toward an anode side, and a concentration of a light-emitting material having a smaller Ea value in the light-emitting layer gradually decreases from the anode side toward the cathode side. | 01-29-2009 |
20090026937 | ORGANIC ELECTROLUMINESCENT DEVICE - There is provided an organic electroluminescent device | 01-29-2009 |
20090026938 | ORGANIC ELECTROLUMINESCENCE ELEMENT - An organic electroluminescence element including an organic layer including a light-emitting layer disposed between a pair of electrodes, wherein the light-emitting layer contains at least one hole transporting light-emitting material and at least one electron-transporting host material, and a concentration of the hole transporting light-emitting material in the light-emitting layer decreases from an anode side toward a cathode side. | 01-29-2009 |
20090026939 | ORGANIC ELECTROLUMINESCENCE ELEMENT - The present invention provides an organic electroluminescence element having at least a light-emitting layer disposed between a pair of electrodes, wherein the light-emitting layer includes at least two electron transporting materials and a hole transporting host material, with at least one of the electron transporting materials being an electron transporting light-emitting material, and a total concentration of the at least two electron transporting materials in the light-emitting layer decreases from a cathode side toward an anode side. | 01-29-2009 |
20090026940 | ORGANIC ELECTROLUMINESCENCE ELEMENT - An organic electroluminescence element including an organic layer including at least a light-emitting layer between a pair of electrodes, wherein the light-emitting layer comprises at least two hole transporting materials and an electron transporting host material, with at least one of the hole transporting materials being a hole transporting light-emitting material, and a total concentration of the at least two hole transporting materials in the light-emitting layer decreases from an anode side toward a cathode side. | 01-29-2009 |
20090218561 | Organic electroluminescence element - An organic electroluminescence element including at least two light-emitting layers disposed between an anode and a cathode, wherein the at least two light-emitting layers include a light-emitting layer A that contains an electron transporting light-emitting material and a hole transporting host material, wherein a concentration of the electron transporting light-emitting material gradually increases from an anode side toward a cathode side of the light-emitting layer A, and a light-emitting layer B that contains a hole transporting light-emitting material and an electron transporting host material, wherein a concentration of the hole transporting light-emitting material gradually decreases from an anode side toward a cathode side of the light-emitting layer B. An organic EL element with high light-emission efficiency and excellent durability is provided. | 09-03-2009 |
20090218935 | Organic electroluminescence element - An organic electroluminescence element having at least one organic compound layer including a light-emitting layer, which is disposed between a pair of electrodes, wherein the light-emitting layer includes a light emitting material, a compound represented by the following formula (1) and a charge transporting material. An organic EL element that exhibits high light-emission efficiency and low driving voltage, and is excellent in drive durability is provided. | 09-03-2009 |
20090218936 | Organic electroluminescence element - An organic electroluminescence element having at least one organic compound layer including a light-emitting layer, which is disposed between a pair of electrodes, wherein a charge transport layer which contains a charge transporting material and a compound represented by the following formula (1) is disposed adjacent to the light-emitting layer. An organic EL element that exhibits high light-emission efficiency and low driving voltage, and is excellent in drive durability is provided. | 09-03-2009 |
20090218938 | ORGANIC ELECTROLUMINESCENCE DEVICE - Provided is an organic electroluminescence device including: a pair of electrodes; and at least one organic layer including a light-emitting layer being provided between the pair of electrodes, wherein at least any one of the at least one organic layer contains both at least one hydrocarbon compound having an alkyl structure and a charge transporting material. | 09-03-2009 |
20100012961 | LIGHT EMITTING DEVICE AND METHOD FOR PRODUCING THE SAME - A light emitting device | 01-21-2010 |
20100187985 | ORGANIC ELECTROLUMINESCENT DEVICE - An organic EL device includes at least a light-emitting layer provided between a pair of electrodes. The light-emitting layer includes at least a hole transporting host material and an electron transporting phosphorescent material, and the concentration of the electron transporting phosphorescent material in the light-emitting layer decreases from a cathode side toward an anode side. | 07-29-2010 |
20100193776 | ORGANIC ELECTROLUMINESCENT DEVICE - An organic electroluminescent device | 08-05-2010 |
20110074280 | ORGANIC ELECTROLUMINESCENCE DEVICE - Provided is an organic electroluminescence device including: a pair of electrodes; and at least one organic layer including a light-emitting layer being provided between the pair of electrodes, wherein at least any one of the at least one organic layer contains both at least one hydrocarbon compound having an alkyl structure and a charge transporting material. | 03-31-2011 |
20130334506 | ORGANIC ELECTROLUMINESCENT ELEMENT - It is an object of the present invention to provide an organic electroluminescent element with which no light extraction layer needs to be produced separately, which has a transparent electrode that is advantageous in terms of cost and a simple film formation process, and which is excellent from the standpoint of light extraction efficiency. The present invention provides an organic electroluminescent element in which a substrate, a first electrode adjacent to this substrate, an organic layer including at least one organic light-emitting layer, and a second electrode adjacent to this organic layer are formed in this order, with this organic electroluminescent element being such that at least one of the aforementioned electrodes is a transparent electrode which is transparent, which contains at least one type of light scattering particles that are transparent and that have a primary particle size of at least 0.5 μm, and which is composed of the aforementioned light scattering particles and a component having a refractive index equal to or higher than the refractive index of the aforementioned organic light-emitting layer. | 12-19-2013 |
20140008620 | ORGANIC ELECTROLUMINESCENT DEVICES - [It is an object] to provide an organic electroluminescent element having a transparent electrode, with which there is no need to produce a separate light extraction layer, [which can be produced by] a simple film formation process, and which is advantageous in terms of cost. [This is] an organic electroluminescent element in which a substrate, a first transparent electrode that is adjacent to this substrate, an organic layer including at least one organic light-emitting layer, a second transparent electrode, a low refractive-index layer with a refractive index of 1.3 or less, and a reflector layer are formed in this order, with this organic electroluminescent element being such that the aforementioned first transparent electrode contains at least one type of transparent particle with a primary particle size of 0.5 μm or more. | 01-09-2014 |