Patent application number | Description | Published |
20080303415 | Organic Electroluminescence Element, Display and Illuminator - An organic electroluminescence element comprising an anode and a cathode having therebetween: at least two or more light emission layers exhibiting different emission peaks and an intermediate layer provided between the light emission layers, wherein at least one of the light emission layers comprises a phosphorescent compound as a light emission compound; and an excited triplet energy of a compound forming the intermediate layer is larger than an excited triplet energy of the phosphorescent compound. | 12-11-2008 |
20090040241 | METHOD FOR DRIVING LIGHT-EMITTING PANEL - The method for driving a light-emitting panel provides a method for driving a light-emitting panel such that, even if there is a defect at a certain place of the light-emitting surface, the whole surface is not turned off and the function as a lighting apparatus or a backlight of or the electronic information device can be maintained by means that only one area including the defect is turned off and the other areas are turned on. The method for driving a light-emitting panel is characterized in that the light-emitting surface is divided into a plurality of areas and each of the areas emits light by time sharing. | 02-12-2009 |
20090072715 | ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY AND ILLUMINATOR - Disclosed is a long-life organic electroluminescent element which can be driven at low voltage. Also disclosed are a display and illuminator using the same. Specifically disclosed is an organic electroluminescent element comprising on a substrate, an anode, a cathode and an organic compound layer arranged between the anode and the cathode and including at least one light emission layer. This organic electroluminescent element is characterized in that the organic compound layer includes an electron transport material-containing layer which contains an electron transport material represented by Formula (a) and at least one substance selected from the group consisting of metals, salts of the metals and electron-donating compounds. Formula (a) Ar1-(Ar2)n [In the formula, Ar1 represents a group derived from an aromatic hydrocarbon ring or a group derived from an aromatic heterocycle; Ar2 represents a group derived from an aromatic heterocycle; and n represents an integer of 2 or more. | 03-19-2009 |
20090091253 | ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY DEVICE AND LIGHTING DEVICE - The first object of the present invention is to provide a blue phosphorescent light-emitting organic electroluminescent (EL) device driven at low voltage, and a display and illuminating device each using such an organic EL device. The second object of the present invention is to provide an organic EL device having long life, and an illuminating device and display each using such an organic EL device. Each organic EL device comprises an electrode and at least one organic layer on a substrate, and at least one of the organic layers is a light-emitting layer containing a host compound and a phosphorescent compound. In order to accomplish the first object, the host compound has an HOMO of from −7.20 to −5.42 eV and an LUMO of from −2.30 to −0.50 eV, and the phosphorescent compound is represented by the general formula (1). In order to accomplish the second object, the host compound is an electron-transporting host compound having an excited triplet energy T | 04-09-2009 |
20090092743 | ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY AND ILLUMINATOR - A method of producing an organic electroluminescent element may include forming a transparent electrode as an anode on a transparent substrate; forming a light emission layer on the transparent substrate having thereon the anode; and forming a cathode on the substrate having thereon the anode and the light emission layer. The light emission layer may be formed by a method including arranging at least one vaporization crucible E evaporating a light emission dopant and at least one vaporization crucible I evaporating a host material and an intermediate layer forming material; and moving the substrate having thereon the anode over the vaporization crucibles E and I to form a light emission layer. | 04-09-2009 |
20090200925 | ORGANIC ELECTROLUMINESCENT ELEMENT, LIGHTING DEVICE AND DISPLAY DEVICE - Provided is a means to obtain long lifetime of an organic EL element, and a long lifetime lighting device and a long lifetime display device utilizing the means are further provided. Disclosed is an organic electroluminescent element comprising an emission layer containing a host material and a dopant material, and a hole transport layer, provided between cathode and anode facing each other, wherein an intermediate layer is provided on an anode side of the emission layer so as to be brought into contact with the emission layer, and the hole transport layer is provided on the anode side of the intermediate layer, satisfying the following Formulae E1E4, where E1 represents an ionization potential of a hole transport material, E2 represents an ionization potential of an intermediate material, E3 represents an ionization potential of the host material, and E4 represents an ionization potential of the dopant material. | 08-13-2009 |
20100295026 | ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY DEVICE AND LIGHTING DEVICE - Disclosed is an organic electroluminescent element containing organic layers sandwiched between an anode and a cathode, wherein the organic layers incorporates an emission layer A containing a host compound A and at least two types of emission dopants, and an emission layer B containing a host compound B and at least one type of emission dopant, provided that at least one of the emission dopants contained in the emission layer A is a phosphorescence-emitting material. | 11-25-2010 |
20110031482 | ORGANIC ELECTROLUMINESCENT ELEMENT AND METHOD OF MANUFACTURING THE SAME - An organic electroluminescent element comprising: an organic laminate comprising at least an light emission layer formed via a wet process, the light emission layer comprising a host material and a guest material; and a pair of electrodes, wherein a solvent used for forming the light emission layer has a boiling point of 105° C. or less and a saturation vapor pressure at 20° C. of 20 mmHg or more, and a method of manufacturing the organic electroluminescent element | 02-10-2011 |
20110156577 | ORGANIC ELECTROLUMINESCENT ELEMENT - An organic electroluminescent element wherein the light extraction efficiency is improved without lowering the electrical conductivity or the transporting or blocking performance for electrons or holes in a transparent electrode or an organic layer. The organic electroluminescent element comprises, on a transparent substrate, at least a light-transmitting first electrode part, an organic light-emitting layer part and a second electrode part, in this order from the substrate, and is characterized in that the first electrode part contains at least metal nanowires and that the average refractive index of the first electrode part is lower than the average refractive index of the organic light-emitting layer part. | 06-30-2011 |
20110260152 | ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY DEVICE, AND ILLUMINATION DEVICE - Provided is an organic electroluminescence element comprising an anode, a cathode and at least one light emitting layer sandwiched between the anode and the cathode as a constituting layer, wherein the light emitting layer contains a dopant and a host; crystal grains made of the dopant, the host, or the mixture of the dopant and the host are contained in the light emitting layer; and the crystal grains exhibit an X-ray diffraction peak. | 10-27-2011 |
20110309352 | ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY DEVICE AND LIGHTING DEVICE - Disclosed is an organic electroluminescent device which is free from color shift while having high efficiency and long life. Also disclosed are a display and illuminating device comprising such an organic electroluminescent device. | 12-22-2011 |
20120248972 | ORGANIC ELECTROLUMINESCENT ELEMENT, PRODUCTION METHOD OF THE SAME, DISPLAY DEVICE, AND LIGHTING DEVICE - An organic electroluminescent element includes a laminated body incorporating an anode substrate, an anode, at least one non-light emitting organic layer A exhibiting positive hole transportability, at least one light emitting organic layer B, at least one non-light emitting organic layer C exhibiting electron transportability, a cathode, and a cathode substrate in the sequence set forth. At least 80% by weight of the organic layer A and the organic layer C in the laminated body is formed via a wet process, and the laminated body is made with an adhesion process between the organic layer A and the organic layer B, or between the organic layer B and the organic layer C. | 10-04-2012 |