Abstract: A color OLED display having at least three different colored microcavity pixels including a light-reflective structure and a semitransparent structure comprising an array of light-emitting microcavity pixels each having one or more common organic light-emitting layers, said light-emitting layer(s) having first, second, and third light-emitting materials that produce different light spectra. The first light-emitting material producing light has a first spectrum portion that is substantially contained within a first color of the array, the second light-emitting material producing light has a second spectrum portion that is substantially contained within a second color that is different from the first color, and the third light-emitting material producing light has a third spectrum portion that is substantially contained within a third color that is different from the first and second colors.

Abstract: An OLED device includes an anode, a first light-emitting layer disposed over the anode, and a second light-emitting layer disposed over the first light-emitting layer. The device also includes a metal-doped organic layer containing an organic electron-transporting material and a low work function metal disposed over the second light-emitting layer, and a cathode disposed over the metal-doped organic layer.

Abstract: An organic light-emitting diode (OLED) device produces white light, includes a) an anode; b) a hole-transporting layer disposed over the anode; c) a blue light-emitting layer disposed over the hole-transporting layer; d) an electron-transporting layer disposed over the blue light-emitting layer; e) a cathode disposed over the electron-transporting layer; wherein the hole-transporting layer comprises an entire layer or a partial portion of a layer in contact with the blue light-emitting layer and contains a light-emitting naphthacene compound having a specified formula.

Abstract: An electroluminescent device comprising a host material and a rubrene derivative having a naphthacene nucleus comprising four fused phenyl rings a, b, c, and d, in order, containing two secondary phenyl ring groups linked to the “c” ring, each bearing directly or indirectly a fluoro or perfluoroalkyl group, wherein each fluoro or perfluoroalkyl group is either: a) linked directly to one of said secondary phenyl rings and is located on a meta or ortho position, or b) located in any position of another aryl group linked directly or indirectly to one of the secondary phenyl rings.

Abstract: A white light-emitting OLED device including spaced anode and cathode, and having blue light-emitting and yellow, orange, or red light-emitting layers, the blue light-emitting layer including a monoanthracene derivative of Formula (I) as a host material: wherein R1-R8 are H; R9 is not the same as R10; R9 is a naphthyl group having no fused rings with aliphatic carbon ring members; and R10 is a biphenyl group having no fused rings with aliphatic carbon ring members; provided that R9 and R10 are free of amines and sulfur compounds.

Abstract: A method of making an OLED device includes forming a color filter array over one surface of a substrate; forming by an evaporation process an anode over the second surface of the substrate and a hole-transporting layer over the anode; moving one or more coated donor elements into a transfer position relative to the hole-transporting layer and transferring emissive material from the donor elements onto the hole-transporting layer to form a light-emitting layer which is capable of emitting white light; and coating by an evaporation process a cathode over the light-emitting layer.

Abstract: An OLED device produces white light more effectively matching the response of multicolor filters in an OLED device including an anode and a cathode and an organic EL element disposed between the anode and cathode having at least two different dopants for collectively emitting white light. The device includes a color filter array disposed over the EL element and including at least three separate filters having bandpass spectra for passing red, green, and blue light, respectively, in response to white light to produce preselected color outputs, and the composition of one or more of the dopants being selected to change the spectrum of the white light to be compatible with the spectrum of the color filters by having peak responses in the white light spectrum corresponding to the bandpass spectra of the red and blue color filters whereby the white light more effectively matches the responses of the color filters.

Abstract: Disclosed is an electroluminescent device comprising a cathode and anode, and therebetween, at least two light-emitting layers wherein the first layer, layer A, comprises a phosphorescent light-emitting organometallic compound comprising iridium and an isoquinoline group and a second layer, layer B, comprising a light-emitting material. Such devices provide useful white light emissions.

Abstract: Disclosed is an electroluminescent device comprising a cathode and anode, and, located therebetween, at least one “A” layer containing a fluorescent material that emits blue light and a hydrocarbon host and at least one “B” layer containing a phosphorescent yellow-light-emitting material. The invention also provides a display or area lighting device and a process for emitting light using the device. The device provides useful light emission.

Abstract: Disclosed is an OLED device comprising a light-emitting layer (LEL) containing a host and an emitting dopant located between a cathode and an anode wherein the dopant is a naphthacene derivative represented by formula (I): wherein: a) said naphthacene derivative contains at least one fluorine or fluorine containing group; and b) when exactly two fluorine containing groups are present said groups are not located at the 5- and 12-positions or at the 6- and 11-positions.

Abstract: Disclosed is an OLED device comprising a light-emitting layer (LEL) containing a host and a dopant located between a cathode and an anode wherein the emitter is an orange-red light emitting rubrene derivative represented by formula (I): wherein: a) there are identical aromatic groups at the 2- and 8-positions; b) the phenyl rings in the 5- and 11-positions contain only para-substituents identical to the aromatic groups in paragraph a); and c) the phenyl rings in the 6- and 12-positions are substituted or not.

Abstract: Disclosed is an OLED device comprising a light-emitting layer (LEL) containing a host and a dopant located between a cathode and an anode wherein the emitter is an orange-red light emitting rubrene derivative represented by formula (II): wherein: a) there are identical branched alkyl or non-aromatic carbocyclic groups at the 2- and 8-positions; b) the phenyl rings in the 5- and 11-positions contain only para-substituents identical to the branched alkyl or non-aromatic carbocyclic groups in paragraph a); and c) the phenyl rings in the 6- and 12-positions are substituted.

Abstract: Disclosed is an OLED device comprising a light-emitting layer (LEL) containing a host and a dopant located between a cathode and an anode wherein the emitter is an orange-red light emitting rubrene derivative represented by formula (I): wherein: a) there are identical oxy, aza or thio groups at the 2- and 8-positions; b) the phenyl rings in the 5- and 11-positions contain only para-substituents identical to the oxy, aza or thio groups in paragraph a); c) the phenyl rings in the 6- and 12-positions are substituted; and provided that when a single substituent on both phenyl rings in paragraph c) are present, said substituent is not a methoxy group located at the para-position.

Abstract: A stabilized white-light-emitting OLED device includes an anode, a cathode, a light-emitting layer disposed between the anode and the cathode, and a stabilizing substituted perylene material, so that the lifetime of the white-light-emitting OLED device is increased.

Abstract: A stabilized OLED device for emitting light of a specific color includes a metallic anode and a metallic cathode spaced from the metallic anode. The device also includes a light-emitting layer including a host and a dopant, the dopant selected to produce light having a spectrum including light of the specific color, and a stabilizer provided in one of the device layers which improves the useful lifetime of the OLED device, wherein the stabilizer has an emission spectrum different from that of the light-emitting layer. One of the electrode layers is semitransparent and the other one is substantially opaque and reflective such that the stabilized OLED device forms a microcavity that emits a narrow band light with the specific color.

Abstract: A method for forming homogeneous mixtures of powders of organic materials, which include, at least one dopant component and one host component, to provide a homogeneous mixture for use in thermal physical vapor deposition to produce an organic layer on a substrate for use in an organic light-emitting device. The method includes combining organic materials, such organic materials including at least one dopant component and one host component and providing a solvent with the organic materials to form a suspension of organic powders in the solvent. Subsequently mixing the suspension to form a solution of the organic materials in the solvent and finally evaporating the solvent from the solution leaving a homogeneous mixture of organic powder.

Abstract: Disclosed is an electroluminescent device having a cathode and an anode, an organic light emitting layer (LEL) containing at least one organic host material and a light emitting first dopant, and a layer containing a stabilizing second dopant wherein: a) the organic host material is capable of sustaining both hole and electron injection and recombination of electrons and holes; and b) the first dopant is a green light emitting organic material capable of accepting energy from the electron-hole recombination in the host material and of accepting energy transferred from the second dopant and is selected to have a bandgap energy lower than or equal to the bandgap energy of the second dopant material; c) the second dopant is a stabilizing material capable of accepting energy of electron-hole recombination in the host material, the second dopant being selected to have a bandgap energy lower than the bandgap energy of the host material, but higher or equal to the first dopant; wherein emissions from the first dopan

Abstract: A method of forming a homogeneous mixture of powders of organic materials, which includes, at least one dopant component and one host component to form a pellet for thermal physical vapor deposition producing an organic layer on a substrate for use in an organic light-emitting device. The method includes, combining organic materials while an emulsifying liquid is provided, after which, the emulsified organic materials are mixed to form a homogeneous mixture of organic material. The homogenous mixture of organic materials is then heated in a container until the emulsifying liquid is evaporated and a solidified homogenous mixture of organic materials remains. The solidified homogeneous mixture of organic materials are removed from the container, pulverized into a homogeneous mixture of organic powder, and compacted to form pellets suitable for thermal physical vaporization to produce an organic layer on a substrate for use in an organic light-emitting device.

Abstract: A method for forming homogeneous mixtures of powders of organic materials, which include, at least one dopant component and one host component, to provide a homogenous mixture for use in thermal physical vapor deposition to produce an organic layer on a substrate for use in an organic light-emitting device. The method includes, combining organic materials having at least one dopant component and one host component to form a mixture of organic materials and placing the mixture of organic materials in a container and sealing the container. The method further includes, heating and mixing the organic materials until they are melted, to form a homogeneous mixture of organic materials. Solidifying the homogeneous mixture of organic materials and removing the solidified homogeneous mixture of organic materials from the container.

Abstract: Powdered organic material s are mixed to form a homogeneous mixture, which includes, at least one dopant component and one host component, to form a pellet for use in thermal physical vapor deposition to produce an organic layer on a substrate for use in an organic light-emitting device. The method of mixing includes, combining organic materials in a powder form and placing the powder organic materials in a container, heating the container in a range of temperatures from 40 to 100° C. for 30 to 100 minutes while purging the atmosphere in the container to a reduced pressure in a range from 10?1 to 10?3 Torr to remove moisture. Filling the container with an inert atmosphere, mixing the powder organic materials in the inert atmosphere to form a homogeneous mixture of powder organic materials, and compacting the homogenous mixture of powder organic materials to form a pellet.