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 |
20080286610 | HYBRID OLED WITH FLUORESCENT AND PHOSPHORESCENT LAYERS - An electroluminescent device comprises a cathode and an anode; and located therebetween, a fluorescent light-emitting layer (LEL) comprising at least one fluorescent emitter and a host, together with at least one phosphorescent light-emitting layer comprising at least one phosphorescent emitter and a host, and having a spacer layer interposed between the fluorescent and phosphorescent light-emitting layers. The materials within these layers are selected so that the triplet energy levels of certain components satisfy certain interrelationships. The invention provides devices that emit light with high luminous efficiency at low voltage. | 11-20-2008 |
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 |
20090108735 | OLED DEVICE WITH FLUORANTHENE ELECTRON TRANSPORT MATERIALS - 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 desirably comprises still further an additional layer containing an organic alkali metal compound, located between the cathode and the electron transporting layer. | 04-30-2009 |
20090108736 | PHOSPHORESCENT OLED DEVICE WITH CERTAIN FLUORANTHENE HOST - An OLED device comprising a cathode, an anode, and having there between a red light emitting layer containing a non-light-emitting fluoranthene compound with a 7,10-diaryl substituted fluoranthene nucleus having no aromatic rings annulated to the fluoranthene nucleus, and a red light-emitting phosphorescent dopant. | 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 |
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 |
20090191427 | PHOSPHORESCENT OLED HAVING DOUBLE HOLE-BLOCKING LAYERS - An organic light-emitting device has a first hole-blocking layer in contact with a phosphorescent light-emitting layer and a second hole-blocking layer in contact with the first. The material in the first hole-blocking layer has a triplet energy greater than the host of the phosphorescent layer and the material in the second hole-blocking layer has a triplet energy higher than the dopant in the phosphorescent layer. Both hole-blocking materials have lower HOMO energies than the host of the phosphorescent light-emitting layer | 07-30-2009 |
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 |
20100117519 | ELECTROLUMINESCENT DEVICE CONTAINING A FLOURANTHENE COMPOUND - An OLED device includes a cathode, an anode, and having there between a light-emitting layer, further including, between the cathode and the light emitting layer, a first layer having a thickness of 20 nm or less and containing a fluoranthene compound including one and only one fluoranthene nucleus and having no aromatic rings annulated to the fluoranthene nucleus, the fluoranthene nucleus having independently selected aromatic groups in the 7,10-positions and a phenanthroline group in the 8- or 9-position. The OLED device desirably includes a second layer containing an alkali metal or an alkali metal compound, located between the cathode and the first layer. The OLED device can also include a polycyclic aromatic compound in the first layer or in a third layer located between the first layer and the light-emitting layer. Devices of the invention provide improvement in features such as efficiency, drive voltage, and operational stability. | 05-13-2010 |
20100117520 | OLED DEVICE WITH FLUORANTHENE ELECTRON INJECTION MATERIALS - The invention provides an OLED device including a cathode, an anode, and having there between a light-emitting layer, further including, between the cathode and the light emitting layer, a first layer containing a fluoranthene compound including one and only one fluoranthene nucleus and having no aromatic rings annulated to the fluoranthene nucleus, the fluoranthene nucleus having independently selected aromatic groups in the 7,10-positions and an azine group in the 8- or 9-position, provided that the azine group is not a phenanthroline group. The OLED device desirably includes a second layer containing an alkali metal or alkali metal compound, located between the cathode and the first layer. The OLED device can also include a polycyclic aromatic hydrocarbon compound in the first layer or in a third layer located between the first layer and the light-emitting layer. Devices of the invention provide improvement in features such as efficiency and drive voltage. | 05-13-2010 |
20100141122 | OLED DEVICE WITH CYCLOBUTENE ELECTRON INJECTION MATERIALS - An OLED device including a cathode, an anode, and having therebetween a light-emitting layer and further comprising a first layer between the light-emitting layer and the cathode containing a cyclobutene compound comprising a cyclobutene nucleus substituted in the 1-position with a five- or six-membered heteroaromatic ring group containing at least one trivalent nitrogen atom; substituted in the 2-position with an aromatic ring group; and substituted with a first methylene group in the 3-position and a second methylene group in the 4-position, provided said first and second methylene groups are further disubstituted in the 1′,1′-positions and the 1″,1″-positions with independently selected aromatic groups. | 06-10-2010 |
20100207513 | OLED WITH FLUORANTHENE-MACROCYCLIC MATERIALS - The invention provides an OLED device including a cathode, an anode, and having therebetween a light-emitting layer, further including, between the cathode and the light emitting layer, a first layer containing a fluoranthene-macrocyclic compound. The fluoranthene-macrocyclic compound includes a fluoranthene nucleus having the 7,10-positions connected by a linking group. The fluoranthene nucleus can be further substituted, provided substituents in the 8- and 9-positions cannot combine to form a five-membered ring group. The OLED device includes at least one layer, between the light-emitting layer and the cathode, containing an alkali metal material. Desirably, the OLED device includes an organic alkali metal compound present in the first layer or in a second layer located between the cathode and the first layer. The OLED device can include an anthracene derivative that is present in the first layer, in addition to the fluoranthene-macrocyclic compound. Devices of the invention provide improvement in features such as efficiency and drive voltage. | 08-19-2010 |
20100244677 | OLED DEVICE CONTAINING A SILYL-FLUORANTHENE DERIVATIVE - The invention provides an OLED device including a cathode, an anode, and having therebetween a light-emitting layer, further includes, between the cathode and the light emitting layer: a) a first layer containing a silyl-fluoranthene compound including a fluoranthene nucleus having a silicon atom bonded to the 8- or 9-position, and wherein the silicon atom is further bonded to three independently selected substituents; and b) a second layer, located between the first layer and the cathode and contiguous to the first layer, and wherein: i) the second layer contains an alkali metal or an organic alkali metal compound; or ii) the second layer contains an azine compound. Embodiments of the invention can provide an OLED device with improved luminance and reduced drive voltage. | 09-30-2010 |
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 |
20140151676 | OLEDS HAVING HIGH EFFICIENCY AND EXCELLENT LIFETIME - An OLED device comprises a cathode, an anode, and has therebetween a light-emitting layer wherein the light-emitting layer comprises (a) a 2-arylanthracene compound and (b) a light-emitting second anthracene compound having amino substitution at a minimum of two positions, wherein at least one amine is substituted at the 2 position of the second anthracene compound. | 06-05-2014 |