Patent application number | Description | Published |
20080258606 | Light Emitting Device - A light-emitting device comprising: an anode; a cathode; and a light emitting region situated between the anode and the cathode, the light emitting region comprising an exciton generating layer and a phosphorescent layer, the exciton generating layer comprising an organic material, wherein the organic material of the exciton generating layer generates singlet and triplet excitons and emits light by fluorescent emission from the singlet excitons and the phosphorescent layer accepts the triplet excitons from the exciton generating layer and emits light by phosphorescent emission from the triplet excitons. | 10-23-2008 |
20090026933 | Organic Electroluminescent Device - An organic electroluminescent device comprising: a transparent substrate; a first electrode; a second reflective electrode and an organic light-emitting region for emitting light of a wavelength 1 from a recombination zone within the light-emissive region, and a microcavity formed between the substrate and the second electrode, the distance between the transparent substrate and the second electrode being [(¼ni)l+(½nj)al]±40 nm, where a is zero or a positive integer, ni is an average refractive index of the material disposed between the recombination zone and the second electrode and nj is an average refractive index of the material disposed between the recombination zone and the substrate. | 01-29-2009 |
20100167440 | Light Emissive Device - An organic light emissive device including
| 07-01-2010 |
20110057229 | Organic Light Emissive Device - A method of manufacturing an organic light emissive device comprising: depositing an organic light emissive layer over an anode and depositing a cathode over the organic light emissive layer, wherein the cathode comprises a trilayer structure formed by: depositing a first layer comprising an electron injecting material; depositing a second layer over the first layer, the second layer comprising a metallic material having a workfunction greater than 3.5 eV; and depositing a third layer over the second layer, the third layer comprising a metallic material having a workfunction greater than 3.5 eV. | 03-10-2011 |
20110168987 | Organic Electronic Device - An organic electronic device comprising: an anode; a hole injecting layer; a cathode; and organic semiconductive material disposed between the hole injecting layer and the cathode, wherein the cathode comprises an electron-injecting material having a higher electron-injection efficiency than BaO/Al, and wherein the hole injecting layer comprises a hole injecting material which has a lower workfunction than PEDOT:PSS (1:6). | 07-14-2011 |
20120007068 | Light Emissive Device - An organic light emissive device comprising: a first electrode; a second electrode; and an organic light emissive region between the first and second electrodes comprising an organic light emissive material which has a peak emission wavelength, wherein at least one of the electrodes is transparent and comprises a composite of a charge injecting metal and another material which is codepositable with the charge injecting metal, the other material having a different refractive index to that of the charge injecting metal and wherein the other material has a lower degree of quenching at the peak emission wavelength than the charge injecting metal whereby quenching of excitons by the at least one electrode is reduced, the charge injecting metal comprising either a low work function metal having a work function of no more than 3.5 eV or a high work function metal having a work function of no less than 4.5 eV. | 01-12-2012 |
20120126688 | ELECTROLUMINESCENT DEVICE - An organic electroluminescent device comprising: a substrate; a first electrode disposed over the substrate for injecting charge of a first polarity; a second electrode disposed over the first electrode for injecting charge of a second polarity opposite to said first polarity; an organic light emitting layer disposed between the first and the second electrode; and an encapsulant disposed over the second electrode, wherein the second electrode and the encapsulant are transparent to light emitted by the light emitting layer, wherein a cavity is provided between the encapsulant and the second electrode, and wherein an anti-reflective coating is provided on at least one side of the encapsulant for reducing reflection of light emitted by the light emitting layer so as to improve out-coupling of light from the device, said anti-reflective coating being transparent to light emitted by the light emitting layer. | 05-24-2012 |
20130207086 | ORGANIC ELECTROLUMINESCENT DEVICE - A light emitting device includes an organic electroluminescent material having a glass transition temperature substantially at or below an intended normal operation temperature of the device. A method for regenerating an organic light emitting device by heating an electroluminescent layer to a temperature substantially equal to or above its glass transition temperature is also described. This provides a means and method for regenerating a degraded emitter in use. | 08-15-2013 |
20140103326 | ORGANIC LIGHT EMISSIVE DEVICE COMPRISING A TRILAYER CATHODE - A method of manufacturing an organic light emissive device comprising: depositing an organic light emissive layer over an anode and depositing a cathode over the organic light emissive layer, wherein the cathode comprises a trilayer structure formed by: depositing a first layer comprising an electron injecting material; depositing a second layer over the first layer, the second layer comprising a metallic material having a workfunction greater than 3.5 eV; and depositing a third layer over the second layer, the third layer comprising a metallic material having a workfunction greater than 3.5 eV. | 04-17-2014 |