Patent application number | Description | Published |
20080258615 | PHOSPHORESCENT OLED WITH MIXED ELECTRON TRANSPORT MATERIALS - An OLED device comprising, in sequence, an anode, a light-emitting layer that comprises a phosphorescent light-emitting organometallic compound, a hole-blocking layer, and a cathode, and between the hole-blocking layer and the cathode, a further layer containing a mixture of a first compound that is a tetracene compound that has the lowest LUMO value of the compounds in the layer, in an amount greater than or equal to 10% and less than 90% and a second compound that is a low voltage electron transport material, exhibiting a higher LUMO value than the first compound in an amount less than or equal to 90% and more than 10%. | 10-23-2008 |
20080268282 | WHITE LIGHT TANDEM OLED - A tandem white light-emitting OLED device is disclosed comprising a spaced anode and cathode, a light reflector associated with either the anode or the cathode, and at least two white light emitting units. The first white light-emitting unit has a set of at least two emission peaks in the blue and yellow spectral regions that are more intense than any other emission peaks that may be present in the emission spectrum of the first white light-emitting unit. The second white light-emitting unit is disposed closer to the reflector than the first white light-emitting unit and includes a set of at least three emission peaks in the blue, green, and red spectral regions that are more intense than any other emission peaks that may be present in the emission spectrum of the second white light-emitting unit. An intermediate connector is disposed between the first and second white light-emitting units. | 10-30-2008 |
20080278066 | HIGH-PERFORMANCE TANDEM WHITE OLED - A tandem OLED device having two spaced electrodes comprising: first and second light-emitting units that produce different emission spectra disposed between the electrodes, the first light-emitting unit produces light that has multiple peaks at wavelengths longer than 500 nm and substantially no emission at wavelengths shorter than 480 nm, and the second light-emitting unit produces light that has substantial emission at wavelengths shorter than 500 nm; and an intermediate connector disposed between the light-emitting units. | 11-13-2008 |
20090001885 | TANDEM OLED DEVICE - A tandem OLED device having two spaced electrodes comprising first and second light-emitting units disposed between the electrodes wherein each light emitting unit has at least one light emitting layer with an intermediate connector disposed between each of the light-emitting units. The intermediate connector includes an electron accepting organic layer in contact with the first light emitting unit and an n-type doped organic layer in contact with the electron accepting organic layer and the second light-emitting unit. The n-type doped organic layer includes an organic gallium complex. The devices exhibit improved stability and little change in color when current density is varied. | 01-01-2009 |
20090004365 | CONTAMINANT-SCAVENGING LAYER ON OLED ANODES - An OLED includes an anode formed over a substrate and a contaminant-scavenging layer formed over the anode, wherein the contaminant-scavenging layer includes one or more organic materials but not a hexaazatriphenylene derivative, each having an electron-accepting property and a reduction potential greater than −0.1 V vs. a Saturated Calomel Electrode, and wherein the one or more organic materials provide more than 50% by mole ratio of the contaminant-scavenging layer. The OLED also includes an organic electroluminescent unit formed over the contaminant-scavenging layer, wherein the organic electroluminescent unit includes a hole-transporting layer, a light-emitting layer, and an electron-transporting layer, and a cathode formed over the organic electroluminescent unit. | 01-01-2009 |
20090053557 | STABILIZED WHITE-EMITTING OLED DEVICE - White light-emitting OLED device having an anode and a cathode, comprising: a first light-emitting layer provided over the anode and containing a first host material and a first light-emitting material, wherein the first host material is a mixture of one or more mono-anthracene derivatives and one or more aromatic amine derivatives, wherein the mono-anthracene derivative(s) being provided in a volume fraction range of greater than 50% and less than or equal to 95% relative to the total layer volume, and the aromatic amine derivative(s) being provided in a volume fraction range of 1% to 40% relative to the total layer volume, and wherein the first light-emitting material has a peak emission in the yellow to red portion of the spectrum; a second light-emitting layer provided over or under the first light-emitting layer, wherein the second light-emitting layer has a peak emission in the blue to cyan portion of the spectrum. | 02-26-2009 |
20090053559 | HIGH-PERFORMANCE BROADBAND OLED DEVICE - An OLED device having two spaced electrodes, and including a first light-emitting layer that produces green emission and includes an anthracene host and a 2,6-diaminoanthracene light-emitting dopant, and a second light-emitting layer that produces red emission and includes a host and a red light-emitting dopant. | 02-26-2009 |
20090096352 | INVERTED OLED DEVICE WITH IMPROVED EFFICIENCY - An inverted OLED device, comprising: a substrate; a cathode disposed on the substrate; an anode spaced from the cathode; at least one light-emitting layer disposed between the anode and the cathode; a hole-transporting layer disposed between the anode and the light-emitting layer(s); an electron-transporting layer disposed between the cathode and the light-emitting layer(s); a first electron-accepting layer disposed between the hole-transporting layer and the anode and including a first electron-deficient organic material constituting more than 50% by volume of the first electron-accepting layer and having a reduction potential greater than −0.5 V vs. a Saturated Calomel Electrode; and a second electron-accepting layer disposed between the electron-transporting layer and the cathode including a second electron-deficient organic material constituting more than 50% by volume of the second electron-accepting layer and having a reduction potential greater than −0.5 V vs. a Saturated Calomel Electrode. | 04-16-2009 |
20090108734 | OLED DEVICE WITH CERTAIN FLUORANTHENE LIGHT-EMITTING DOPANTS - The invention provides an OLED device comprising a cathode, an anode, and having therebetween a light emitting layer and an electron transporting layer,
| 04-30-2009 |
20090110956 | OLED DEVICE WITH ELECTRON TRANSPORT MATERIAL COMBINATION - The invention provides an OLED device comprising a cathode, an anode, and having there between a light-emitting layer, further comprising, between the cathode and the light emitting layer, a non-luminescent electron transporting layer containing a compound with a 7,10-diaryl substituted fluoranthene nucleus having no aromatic rings annulated to the fluoranthene nucleus and an organic alkali metal salt, wherein the % volume of the organic alkali metal salt in the electron-transporting is in the range of greater than 70% but less than or equal to 90%. Devices of the invention provide improvements in T | 04-30-2009 |
20090110957 | OLED DEVICE WITH CERTAIN FLUORANTHENE HOST - An OLED device comprises a cathode, an anode, and has therebetween:
| 04-30-2009 |
20090142618 | OLED DEVICE EMPLOYING ALKALI METAL CLUSTER COMPOUNDS - The invention provides an OLED device containing certain alkali metal cluster compounds with mixed ligands, such compounds, and methods of making them. In particular, the cluster compound is a neutrally charged mixed cluster compound comprising first and second subunits with the first subunit comprising an alkali metal salt of a nitrogen containing a heterocyclic ligand bearing a anionic hydroxy group and the second subunit consisting of an organic alkali metal salt different than the first subunit. | 06-04-2009 |
20090146552 | WHITE OLED WITH TWO BLUE LIGHT-EMITTING LAYERS - An organic white light-emitting device, including a substrate; an anode and a cathode spaced from each other; a light-emitting layer including a yellow dopant for emitting yellow light; and first and second blue light-emitting layers, each blue light-emitting layer having at least one different material than the other blue light-emitting layer. | 06-11-2009 |
20090162612 | OLED DEVICE HAVING TWO ELECTRON-TRANSPORT LAYERS - An organic light emitting diode (OLED) device having a cathode, a light emitting layer and an anode, in that order, and having located between the cathode and the light emitting layer,
| 06-25-2009 |
20090162644 | ORGANIC ELEMENT FOR LOW VOLTAGE ELECTROLUMINESCENT DEVICES - An OLED device comprises a cathode, a light emitting layer and an anode, in that order, and
| 06-25-2009 |
20090191428 | TANDEM OLED DEVICE WITH INTERMEDIATE CONNECTOR - A tandem OLED device including an anode; a cathode; at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole-transporting layer and one organic light-emitting layer; and an intermediate connector disposed between adjacent electroluminescent units, wherein the intermediate connector includes an n-doped organic layer and an electron-accepting layer, the electron-accepting layer being disposed closer to the cathode than the n-doped organic layer, and wherein the n-doped organic layer includes an alkali metal and an organic alkali metal complex. | 07-30-2009 |
20090195146 | TANDEM OLED DEVICE WITH INTERMEDIATE CONNECTOR - A tandem OLED device including an anode; a cathode; at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole-transporting layer and one organic light-emitting layer; and an intermediate connector of at least two layers disposed between adjacent electroluminescent units, wherein the intermediate connector includes an organic alkali metal complex layer and an organic electron-accepting layer, the organic electron-accepting layer being disposed closer to the cathode than the organic alkali metal complex layer, and there is present metallic aluminum in the organic alkali metal complex layer. | 08-06-2009 |
20100019671 | ORGANIC ELEMENT FOR LOW VOLTAGE ELECTROLUMINESCENT DEVICES - An OLED device including a cathode, a light emitting layer and an anode, in that order, and, having located between the cathode and the light emitting layer, a further layer containing an alkali metal or alkaline earth metal salt of a 2-(2-hydroxyphenyl)phenanthroline derivative. Such devices exhibit reduced drive voltage while maintaining good luminance. | 01-28-2010 |
20100066239 | HIGH-COLOR-TEMPERATURE TANDEM WHITE OLED - An OLED device having two spaced electrodes including: first, second, and third light-emitting units disposed between the electrodes, the first light-emitting unit produces light that has multiple peaks at wavelengths longer than 500 nm and substantially no emission at wavelengths shorter than 480 nm, and the second and third light-emitting units produce light that has substantial emission at wavelengths shorter than 500 nm; intermediate connectors respectively disposed between the first and second light-emitting units, and between the second and third light-emitting units; and wherein the OLED device emits light with a color temperature greater than 7,000K. | 03-18-2010 |
20100084647 | ELECTROLUMINESCENT DEVICES INCLUDING ORGANIC EIL LAYER - An OLED device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL) comprising a phosphorescent emitting compound disposed in a host comprising a mixture of at least one electron transporting co-host which is a benzophenone derivative with a spiro substituent and at least one hole transporting co-host which is a triphenylamine which contains one trivalent nitrogen atom that is bonded only to carbon atoms, at least one of which is a member of an aromatic ring, wherein there is present an electron transporting layer contiguous to the LEL (HBL?) on the cathode side comprising an anthracene or a fluoranthene and wherein there is present an election injecting layer comprising a phenanthroline or a lithium quinolate contiguous to the cathode. | 04-08-2010 |
20100253209 | TANDEM WHITE OLED WITH EFFICIENT ELECTRON TRANSFER - A white-light-emitting tandem OLED device having spaced anode and cathode including: first and second light-emitting units disposed between the anode and cathode; an intermediate connector including an n-type layer and a p-type layer disposed between the first and second light-emitting units; and a fluoranthene-containing electron-transporting layer adjacent to the n-type layer of the intermediate connector and including at least 25% of a 7,10-diaryl-substituted fluoranthene compound having no aromatic rings annulated to the fluoranthene nucleus. | 10-07-2010 |
20100288362 | INTERNAL CONNECTOR FOR ORGANIC ELECTRONIC DEVICES - The invention provides an electronic device including an anode and a cathode, between which there are at least two organic phototransducing units where the units are separated by an intermediate connecting region which comprises in sequence: an organic p-type layer, an intermediate layer in direct contact with the organic p-type layer and including a compound that has a LUMO more negative than −3.0 eV and is different from the organic compound in the organic p-type layer, and an n-type doped organic layer in direct contact with the intermediate layer and including an electron transport material as a host and an organic n-dopant with a HOMO less negative than −4.5 eV. In one embodiment, the electronic device is a tandem OLED. | 11-18-2010 |
20110018429 | OLED DEVICE WITH STABILIZED YELLOW LIGHT-EMITTING LAYER - The invention provides an OLED device including an anode, a cathode and a yellow light-emitting layer located therebetween, the light-emitting layer comprising a 9,10-diarylanthracene host; a yellow light-emitting 5,6,11,12-tetraphenyltetracene derivative where as least 1 of the phenyl groups is further substituted and a non-light-emitting diarylamine substituted 9,10-diarylsubstituted anthracene stabuilizer. Devices of the invention provide improvement in features such as stability and efficiency while maintaining excellent color. | 01-27-2011 |
20140017830 | PLANARIZED TCO-BASED ANODE FOR OLED DEVICES, AND/OR METHODS OF MAKING THE SAME - Certain example embodiments relate to organic light emitting diode (OLED)/polymer light emitting diode (PLED) devices, and/or methods of making the same. A first transparent conductive coating (TCC) layer is disposed, directly or indirectly, on a glass substrate. An outermost major surface of the TCC layer is planarized by exposing the outermost major surface thereof to an ion beam. Following said planarizing, the first TCC layer has an arithmetic mean value RMS roughness (Ra) of less than 1.5 nm. A hole transporting layer (HTL) and an electron transporting and emitting layer (ETL) are disposed, directly or indirectly, on the planarized outermost major surface of the first TCC layer. A second TCC layer is disposed, directly or indirectly, on the HTL and the ETL. One or both TCC layers may include ITO. The substrate and/or an optional optical out-coupling layer stack system may be planarized using an ion beam. | 01-16-2014 |
20140264293 | COATED ARTICLE AND/OR DEVICE WITH OPTICAL OUT-COUPLING LAYER STACK (OCLS) INCLUDING VACUUM DEPOSITED INDEX MATCH LAYER OVER SCATTERING MATRIX, AND/OR ASSOCIATED METHODS - Certain example embodiments relate to light emitting diode (e.g., OLED and/or PLED) inclusive devices, and/or methods of making the same. Certain example embodiments incorporate an optical out-coupling layer stack (OCLS) structure that includes a vacuum deposited index matching layer (imL) provided over an organo-metallic scattering matrix layer. The imL may be a silicon-inclusive layer and may include, for example, vacuum deposited SiOxNy. The OCLS including scattering micro-particles, the imL, and the anode may be designed such that the device extraction efficiency is significantly improved, e.g., by efficiently coupling the light generated in the organic layers of the devices and extracted through the glass substrate. In certain example embodiments, the refractive index of the ITO, SiOxNy index matching layer, OCLS scattering layer and the glass substrate may be provided in decreasing order. | 09-18-2014 |