Abstract: Organic electroluminescent apparatus including an organic electroluminescent device for emitting blue-green light. A microcavity structure receives the blue-green light and is tuned to a resonance such that the blue-green light is enhanced to blue and green light. A color converting medium receives and absorbs the blue-green light and emits red light in response thereto.

Abstract: Organic electroluminescent apparatus including an organic electroluminescent device for emitting blue-green light. A microcavity structure receives the blue-green light and is tuned to a resonance such that the blue-green light is enhanced to blue and green light. A color converting medium receives and absorbs the blue-green light and emits red light in response thereto.

Abstract: An organic thin film transistor including a gate on a layer of gate insulator material, a source and a drain positioned in spaced apart relationship on a film of organic semiconductor material with uniaxially aligned molecules, the film of organic semiconductor material being positioned so that the molecules are aligned between the source and drain in a direction from the source to the drain, and an orientation film positioned adjacent the film of organic semiconductor material so that molecular uniaxial alignment of the film of organic semiconductor material is achieved by the orientation film.

Abstract: An organic electroluminescent device with enhanced performance includes anode and cathode electrodes with organic material, single or multiple layers, positioned therebetween and in juxtaposition to each of the electrodes. The organic material is doped with an AMC dopant with a concentration in a range of approximately 0.1 Wt % to 15 Wt % in a region of the organic material adjacent to the cathode electrode. This doped region has a thickness in a range of approximately 20 Å to 600 Å. The dopant includes either a low work function alkaline metal compound, such as LiF, LiCl, KBr, MgF2, LiO2, MgOx, CaOx, and CsOx or a low work function alkaline metal alloy, such as Li-Al, Li-In, Sr-Al, Cs-Al.

Abstract: An organic EL device includes a cathode, an organic electroluminescent layer and an anode, laminated in sequence. The organic layer is composed of a continuous organic medium AxByCz, where A, B and C are components capable of transporting electrons and holes and a hole injecting component, respectively, x represents the content of the A component with a value ranging from 0 adjacent the anode to 100% adjacent the cathode, y represents the content of the B component with a value ranging from 0 adjacent the cathode to 100% adjacent the anode, and z represents the content of the C component and is a maximum adjacent the anode. The C component includes a hole injecting component such as porphyrinic compound, for example one of CuPc and MgPc.

Abstract: Organic electroluminescent apparatus including an organic electroluminescent device (11) for emitting blue to blue-green light. A microcavity structure (12) receives the blue to blue-green light and has an optical length such that the blue to blue-green light is enhanced to blue light. A color converting medium (23) receives and absorbs the blue light and emits red light in response thereto.

Abstract: An organic EL device includes a cathode, an organic electroluminescent layer and an anode, laminated in sequence. The organic layer is composed of a continuous organic medium A.sub.x B.sub.y, where A and B are components capable of transporting electrons and holes, respectively, x represents the content of the A component with a value ranging from 0 adjacent the anode to 100% adjacent the cathode, and y represents the content of the B component with a value ranging from 0 adjacent the cathode to 100% adjacent the anode. The lifetime of the device is improved by the elimination of heterojunctions in the continuous organic medium and suppression of the re-crystallization tendency of the organic materials. At least one fluorescent dye or pigment is incorporated in the organic layer to improve efficiency and color of the luminescence.

Abstract: An organic electroluminescent display device including a layer of organic electroluminescent material disposed between electrodes for emitting an optical effect. The electroluminescent layers providing discrete electroluminescent pixels which are electrically isolated from one another by a first dielectric material wall structure and a second dielectric material wall structure. The wall structures provide for reliable manufacturing of the display device and prevent electrical shorting between a first electrically conductive material and a second electrically conductive material.

Abstract: A new class of organometallic complexes for use in electroluminescent (EL) devices and a method of preparation are disclosed. The organometallic complexes are prepared by mixing organic ligands with metal salts and a layer is formed in an EL device by vacuum evaporation. The organometallic material in the EL device forms a light emission layer.

Abstract: An organic electroluminescent display device includes a plurality of pixels formed on a substrate, each pixel including a plurality of different light influencing elements disposed on the substrate. Deposited atop each light influencing element is an organic electroluminescent display element which is adapted to emit light of a preselected wavelength. A layer of an insulating, planarizing material is disposed between the light influencing elements and the OED. Each of the light influencing elements is adapted to generate a different effect in response to light of a preselected wavelength incident thereon. In this way, it is possible to achieve a red, green, blue organic electroluminescent display assembly using a single organic electroluminescent display device.

Abstract: A full color organic electroluminescent display device including a substrate element and a plurality of thin film transistors, formed on the substrate element. A planarizing layer of insulating material is positioned over the plurality of thin film transistors, thereby defining a substantially planar surface. A plurality of contact pads are formed on the planar surface of the planarizing layer, with one contact pad associated with each thin film transistor. A hole transporting layer is deposited over the contact pads. Three pixelated emissive organic electron transporting media are formed on a top surface of the hole transporting layer so as to define an organic light emitting device. An electrical and light conducting material is positioned in overlying relationship over the emissive organic electron transporting media, thereby operating as a common second terminal of the organic light emitting devices.

Abstract: An organic electroluminescent device with enhanced performance includes anode and cathode electrodes with organic material, single or multiple layers, positioned therebetween and in juxtaposition to each of the electrodes. The organic material is doped with an AMC dopant with a concentration in a range of approximately 0.1 Wt % to 15 Wt % in a region of the organic material adjacent to the cathode electrode. This doped region has a thickness in a range of approximately 20 .ANG. to 600 .ANG.. The dopant includes either a low work function alkaline metal compound, such as LiF, LiCl, KBr, MgF.sub.2, LiO.sub.2, MgO.sub.x, CaO.sub.x, and CsO.sub.x or a low work function alkaline metal alloy, such as Li--Al, Li--In, Sr--Al, Cs--Al.

Abstract: An active matrix OED array with an improved device cathode includes a plurality of control transistors formed on a semiconductor substrate with insulating material positioned over the control transistors to form a planar surface. A plurality of contact pads are formed on the planar surface and electrically coupled to the control transistors. A thin (5 .ANG. to 20 .ANG.) electron injecting layer of either alkaline metal oxide or alkaline metal fluoride is positioned on each contact pad and organic material is deposited on the electron injecting layer so as to define an organic light emitting device on each contact pad and electrical and light conducting material is positioned over the organic material to define a second terminal for the OEDs.

Abstract: An active matrix OED array includes an array area defined on a semiconductor substrate defining rows and columns of pixels and driver areas spaced from the array area with driver circuits including row drivers coupled to row buses and column drivers coupled to column buses formed in the driver areas. An active control circuit and an OED are formed in each pixel of the array area and coupled to a row and a column bus adjacent each pixel. A second substrate is formed of light transmissive material and includes externally accessible electrical connectors coupled to the driver circuits. The semiconductor substrate includes a first bump pad encircling the array area and the second substrate includes a mating second bump pad with the first and second bump pads engaged to seal the array area.

Abstract: An organic electroluminescent device with graded region is formed, which includes a hole transporting region formed of hole transporting organic material, an electron transporting region formed of electron transporting organic material, and a graduated region disseminated between the hole transporting region and the electron transporting region. The graduated region changes, either in steps or continuously, from hole transporting organic material adjacent the hole transporting region to electron transporting organic material adjacent the electron transporting region. Electrical contacts are formed in communication with the hole transporting region and the electron transporting region.

Abstract: An organic EL device comprises a cathode, an electron transporting layer (ETL), a hole transporting layer (HTL) and an anode which are laminated in sequence, wherein the materials making up the ETL and HTL are so selected that the energy barrier for hole injection from the HTL to the ETL is substantially higher than the energy barrier for electron injection from the ETL to the HTL. The organic EL device obtained has efficient light emission from the HTL layer when an efficient fluorescent dye as an emitter is doped in the HTL or the part of the HTL close to the ETL/HTL interface.

Abstract: An integrated matrix of light emitting devices includes a plurality of isolated semiconductor LEDs positioned in a matrix of rows and columns on the surface of a substrate. A plurality of column buses, one each positioned adjacent each column of semiconductor LEDs, is provided with each of the column buses being connected to a first terminal of each semiconductor LED in the adjacent column of semiconductor LEDs and each of the column buses providing an exposed planar surface. A plurality of OEDs is positioned on the exposed planar surface of each column bus with a first terminal of each OED connected to the column bus.

Abstract: An electroluminescent device is composed of a body of small molecule organic material(s) sandwiched between a first and a second electrode, wherein a layer of first insulative material is placed between the body of small molecule organic material(s) and the first electrode, and an optional layer of second insulative material is placed between the body of small molecule organic material(s) and the second electrode. The layer of first insulative material has a thickness which allows first carriers from the first electrode to tunnel therethrough and the second insulative material has a thickness which allows second carriers from the second electrode to tunnel therethrough. Further, the layer of first insulative material provides a barrier to the second carriers and the layer of second insulative material provides a barrier to the first carriers.

Abstract: An organic electroluminescent device array encapsulating package including an organic electroluminescent device on a supporting substrate. A cover having a rim engaging the supporting substrate is spaced from and hermetically encloses the organic electroluminescent device. A dielectric liquid having benign chemical properties fills the space between the cover and the organic electroluminescent device, providing both an efficient medium for heat transmission and an effective barrier to oxygen and moisture.

Abstract: A method of passivating electroluminescent organic devices positioned on a supporting substrate including the steps of overcoating or capping the individual pixels, which form an array of electroluminescent organic devices, with a layer of stable metal, overcoating the layer of stable metal with a buffer system including a buffer layer of organic material and a thermal coefficient matching layer on the buffer layer, depositing a low permeability inorganic layer over the thermal coefficient matching layer, and sealing the electroluminescent organic device with an epoxy encapsulant or polymer laminated aluminum foil.