Abstract: A method of fabricating OLED devices is disclosed. A conductive layer is patterned by pillars to form electrodes in the device, wherein portions of the pillars have at least 2 sub-rows to prevent shorting of adjacent electrodes. In one embodiment, the ends of the pillars are split into at least 2 sub-rows.

Abstract: An EL device comprising a first electrode, an EL layer formed on the first electrode, and a second electrode formed on the EL layer, wherein at least one layer of a material whose wettability changes when light is applied thereto is formed. The invention provides EL devices that can be simply produced, and processes for producing the same.

Abstract: A display device comprising a primary light-emissive region, a light-sensitive region and a secondary light-emissive region, wherein: the primary light-emissive region comprises an organic light-emissive material and a pair of electrodes arranged to apply an electric field across the light-emissive material to cause it to emit light; the light-sensitive region comprises a photocathode responsive to light from the primary light-emissive region to release charged particles towards the secondary light-emissive region; sand the secondary light-emissive region comprises a phosphorescent material excitable by the charged particles from the light-sensitive region to emit light.

Abstract: The present invention provides an organic electroluminescence device including a base structure and at least an organic electroluminescence device structure over the base structure, wherein the base structure includes a substrate made of a plastic material, and at least a heat radiation layer which is higher in heat conductivity than the substrate.

Abstract: A flexible photovoltaically powered display, which may be utilized in a wide variety of display contexts including retail shelf systems, is described. The photovoltaic cell is preferably activated by ambient light (e.g., fluorescent or incandescent).

Abstract: An organic light emitting diode (OLED) device. The OLED device comprises a transparent substrate, a plurality of anodes, an organic functional layer, a black layer and a plurality of cathodes. The anodes are positioned over a transparent substrate. The organic function layer is positioned over the transparent substrate covering the anodes. The black layer is positioned over the organic functional layer and the cathodes are positioned over the black layer. Through the black layer, the amount of back reflection of external light is reduced and the contrast of the display device is increased.

Abstract: A luminescence device is formed of a substrate, and a laminated layer structure formed on the substrate including a plurality of luminescence layers emitting different luminescence colors, and a plurality of electrodes forming pairs of electrodes each sandwiching an associated luminescence layer. At least one of the plurality of electrodes are provided with apertures, through which a luminescence flux emitted from at least one of the luminescence layers is transmitted. As a result, the luminescence device can emit different luminescence colors expected to cause color mixing with each other with a minimum of positional difference leading to color irregularity.

Abstract: A method of the invention for forming a pixel-defining layer on an OLED panel is disclosed.

Abstract: A method of sputter deposition onto an organic material, wherein the discharge gas of the sputtering operation is a gas having a spectrum of light emission of a lower energy than that of argon.

Abstract: A charge-transport structure, e g an opto-electronic structure such an electroluminescent device is manufactured by forming a uniform first charge-transport (eg electron-transport) polymer layer on a substrate. Low molar mass dyes in a solvent are ink-jet printed onto the exposed surface of the first layer to form a multicolor pattern, and the dyes are allowed to diffuse into the layer to form charge-recombination/emitter regions within the layer. Excess dyes are washed away from the surface and then a uniform second charge-transport (eg hole-transport) polymer layer is formed on the resultant smooth surface of the first layer over the tops of the regions. Finally, electrodes are deposited on the top of the second layer in registration with the regions. Photovoltaic structures and organic transistors are also disclosed.

Abstract: The present invention provides a method of forming an electroluminescent circuit by screen printing. The method according to the invention includes screen printing a rear electrode pattern on a substrate, which is preferably a polyester sheet, screen printing a dielectric layer over the rear electrode pattern, screen printing a front electrode pattern on the dielectric layer, and screen printing a phosphor layer over the front electrode layer. The rear electrode pattern preferably includes a solid layer disposed upon the substrate and the front electrode pattern preferably includes a plurality of opaque lines separated by spaces. In an alternative embodiment, the method according to the invention includes screen printing the phosphor layer on the substrate, screen printing the front electrode pattern on the phosphor layer, screen printing the dielectric layer over the front electrode pattern, and screen printing the rear electrode pattern over the dielectric layer.

Abstract: A light-emitting device includes an anode, a cathode, and at least one organic electroluminescent (“EL”) material positioned between the anode and the cathode. Nanoparticles of at least one photoluminescent material are dispersed in the organic EL material. The organic EL material emits a first electromagnetic (“EM”) radiation having a first spectrum in response to an applied electrical field. The PL material absorbs a portion of the first EM radiation emitted by the organic EL material and emits a second EM radiation having a second spectrum. A plurality of the light-emitting devices are arranged on a transparent substrate to provide a panel display or a lighting source.

Abstract: An optocoupler structure comprising a semiconductor chip having an integrated circuit and an optically transparent, electrically insulating layer having first and second surfaces; an organic diode integral with said first surface, said diode operable to emit electromagnetic radiation; and said circuit including a radiation-sensitive semiconductor device integral with said second surface, electrically isolated from said diode, and positioned in the path of said radiation.

Abstract: A polarized organic photonics device, including an LED or photovoltaic device, is comprised of a first conductive layer or electrode coated with a friction transferred alignment material, a photoactive material, and a second electrically conductive layer or electrode. The alignment material provides for the orientation of the subsequently deposited photoactive material such that the photoactive material interacts with or emits light preferentially along a selected polarization axis. Additional layers and sublayers optimize and tune the optical and electronic responses of the device.

Abstract: The present invention relates to a luminescent device having a plurality of organic EL (Electroluminescence) elements in which at least a charge injection layer and a light-emitting layer are interposed between a pair of electrodes. It is a luminescent device in which plural sets of anodes and cathodes are arranged opposite to each other, and the charge injection layer and the light-emitting layer are formed between these anodes and cathodes, whereby a plurality of the organic EL elements can be controlled independently luminescence. The conductivity &sgr; of the charge injection layer is set such that a leakage current from the organic EL element is 1/100 or less of the current passed through the organic EL element.

Abstract: The present invention is directed to simplified OLED structures comprising an anode layer, a hole injecting layer (HIL) in direct contact with the anode layer, an emissive organic electron transporting layer (ETL) in direct contact with the hole injecting layer, and a cathode layer in direct contact with the emissive organic electron transporting layer. The hole injecting material used in the hole injecting layer is characterized, in particular, as being an organic material having an ionization potential that is not more than about 0.7 eV greater than the ionization potential of the material used for the anode layer. The emissive organic electron transporting layer comprises an organic electron transporting material and an organic hole-trapping emissive material, for example, an organic phosphorescent material that produces emission from a triplet excited state of an organic molecule.

Abstract: Reducing the manufacturing cost of an EL display device and an electronic device furnished with the EL display device is taken as an objective. A textured structure in which projecting portions are formed on the surface of a cathode is used. External stray light is diffusely (irregularly) reflected by the action of the projecting portions when reflected by the surface of the cathode, and therefore a defect in which the face of an observer or the surrounding scenery is reflected in the surface of the cathode can be prevented. This can be completed without using a conventionally necessary high price circular polarizing film, and therefore it is possible to reduce the cost of manufacturing the EL display device.

Abstract: A light-emitting device comprising a display light-emitting part 43 made of a laminate of a first electrode 47, an organic EL layer 49, a photoconductive layer 51 and a second electrode 53 in sequence; and an external light-emitting part 45 laminated on the second electrode 53 side of the display light-emitting part 43, the photoconductive layer 51 receiving light emitted from the external light-emitting part 45, the photoconductive layer 51 being made of a photoconductor having a current amplification mechanism for multiplying carriers generated in a photoelectric conversion process. For example, a photoconductor having a current amplification mechanism using an avalanche effect can be preferably adapted to the photoconductive layer 51.

Abstract: The present invention discloses an organic EL device, including: a transparent substrate having a display region and a non-display region, the display region having a pixel region; first electrodes formed on the display region of the substrate and spaced apart from each other; EL light-emitting layers formed on the portions of the first electrode corresponding to the pixel region; and second electrodes formed over the display region and having a light absorbing layer interposed therein.

Abstract: Electroluminescent assembly comprising a substrate, an anode, an electroluminescent element and a cathode, where at least one of the two electrodes is transparent in the visible spectral region and the electroluminescent element contains one or more zones selected from the group consisting of hole injection zone, hole transport zone, electroluminescent zone, electron transport zone and electron injection zone in the order specified, where each of the zones present may also assume functions of the other zones mentioned, characterized in that the electroluminescent element contains a boron complex of an 8-aminoquinoline derivative.

Abstract: A composite multi-layered display device consists of two components: a light emitting component which can be used to generate and display images, and a generating component such as a solar cell which generates an electrical current in the presence of light. The two components are incorporated into corresponding co-extensive layers, with the light emitting component being light transmissive to allow external light to impinge on the generating component. Preferably, the light emitting component includes a light emitting polymer material and the generating component includes a solar cell which includes amorphous silicon.

Abstract: A light emission display panel has a substrate, a plurality of first electrodes on the substrate, a light emission layer on the first electrodes, and a plurality of second electrodes. Each of the second electrodes has a form of a strip film in which partially overlapped portions are provided.

Abstract: An organic EL display with a big screen can be realized, a fabrication work can be simplified, a manufacturing cost can be reduced, a periodicity with which pixels are arrayed on the whole of the screen can be maintained after the manufacturing, a picture quality can be prevented from being deteriorated due to a boundary between transparent substrates and high resolution can be realized. A plurality of organic thin-film EL elements (2) are formed on a single transparent substrate (1). Circuit substrates (5) in which driver circuits (6) for supply signals to signal electrodes and scanning electrodes of the elements (2) are mounted are closely bonded to the respective elements (2). The circuit substrate (5) is made of a material having end-sealing property and has through-holes bored at its positions opposing to the signal electrode and the scanning electrode. The through-holes are buried by a material having end-sealing property and conductivity.

Abstract: A mechanism for deterring dark spot propagation by dividing the active emitting area, i.e., pixel, of each light emitting device into sub-regions that are separated by a dielectric barrier. This division prevents spreading of one affected region to adjacent current carrying regions. A side benefit of the division is improved out-coupling of light from the active emitting area of the light emitting device because the morphology resulting from the incorporation of the dielectric barrier can be configured to increase the externally radiated, and thereby collectable, portion of the generated light.

Abstract: A light-emitting compound and a display device adopting the light-emitting compound as a color-developing substance. When the display device adopts an organic layer formed of such light-emitting compound as a blue light-emitting material, luminous efficiency of the display device is improved.

Abstract: Electroluminescent assembly comprising a substrate, an anode, an electroluminescent element and a cathode, where at least one of the two electrodes is transparent in the visible spectral region and the electroluminescent element contains one or more zones selected from the group consisting of hole injection zone, hole transport zone, electroluminescent zone, electron transport zone and electron injection zone in the order specified, where each of the zones present may also assume functions of the other zones mentioned, characterized in that the electroluminescent element contains an azomethine-metal complex.

Abstract: A functional laminate film protects a color conversion filter and an organic electroluminescent element from mutual contamination during manufacture and use. The functional laminate film includes a transparent base film, a coupling layer and a hard coat layer. The coupling layer is bonded to the color conversion filter to present a flat surface with substantial reduction in optical defects. The hard coat layer is hard enough to withstand the formation of the organic electroluminescent element on its upper surface. The hard coat layer also acts as a barrier to prevent chemical species from the fluorescent materials within the color conversion filter from adversely affecting the organic electroluminescent element during manufacture and operation, and vice versa. The result is an improved polychromatic electroluminescent device composed of the organic electroluminescent element, the functional laminate film and the color conversion filter.

Abstract: Electroluminescent assembly comprising a substrate, an anode, an electroluminescent element and a cathode, where at least one of the two electrodes is transparent in the visible spectral region and the electroluminescent element contains one or more zones selected from the group consisting of hole injection zone, hole transport zone, electroluminescent zone, electron transport zone and electron injection zone in the stated order, where each of the zones present can also assume functions of the other zones mentioned, characterized in that the electroluminescent element contains an N-alkyl-2,2′-imino-bis-(8-hydroxyquinoline)-metal complex.

Abstract: An EL device comprising a first electrode, an EL layer formed on the first electrode, and a second electrode formed on the EL layer, wherein at least one layer of a material whose wettability changes when light is applied thereto is formed. The invention provides EL devices that can be simply produced, and processes for producing the same.

Abstract: Electroluminescent assembly comprising a substrate, an anode, an electroluminescent element and a cathode, where at least one of the two electrodes is transparent in the visible spectral region and the electroluminescent element contains one or more zones selected from the group consisting of hole injection zone, hole transport zone, electroluminescent zone, electron transport zone and electron injection zone in the order specified, where each of the zones present may also assume functions of the other zones mentioned, characterized in that the electroluminescent element contains a boron complex of an 8-hydroxyquinoline derivative.

Abstract: An object of the invention is to prolong the seal life of a color EL display apparatus. The initial thickness of a light-transmitting main substrate is larger than a predetermined reference thickness WC. First, a plurality of thin-film EL devices are formed on one surface of the main substrate. Then, a sealing substrate having a concave portion formed in one surface thereof is bonded onto the one surface of the main substrate at predetermined intervals. Then, a protective material for protecting the thin-film EL devices is filled in the gap between the one surface of the main substrate and the sealing substrate. Then, the main substrate is processed so as to have the reference thickness WC. Then, a color filter portion is formed on the other surface of the main substrate. Lastly, a reinforcing substrate is attached to the other surface of the main substrate with the color filter portion in between.

Abstract: To provide a bright and highly reliable light-emitting device. An anode (102), an EL layer (103), a cathode (104), and an auxiliary electrode (105) are formed sequentially in lamination on a reflecting electrode (101). Further, the anode (102), the cathode (104), and the auxiliary electrode (105) are either transparent or semi-transparent with respect to visible radiation. In such a structure, lights generated in the EL layer (103) are almost all irradiated to the side of the cathode (104), whereby an effect light emitting area of a pixel is drastically enhanced.

Abstract: A method for modifying the surface properties such as work function of semiconducting and conducting layers by plasma treatment. Also disclosed are electrical devices such as organic light emitting devices of enhanced performance owing to the use of plasma treatment-modified semiconducting or conducting layers.

Abstract: An improved electroluminescent display includes a first substantially transparent or translucent conductive layer and a phosphor or the like layer. The layers are deposited to form a multi-element display on the first conductive layer; with the phosphor layer broken up into more than one area. There is a layer of dielectric deposited upon the phosphor or the like layer and the dielectric covers substantially all of the display with a second conductive layer deposited upon the dielectric layer. The areas correspond to areas of the electroluminescent display which are to be lit. The second conductive layer is comprised of a number of areas shaped to be substantially congruent with the shaped areas of the phosphor or the like layer.

Abstract: The contrast of an electroluminescent display using an organic EL layer is improved by using a circular polariser in front of the surface. The polariser causes ambient light to be absorbed, while allowing transmission of emitted light and therefore improves the contrast of the display.

Abstract: An organic electroluminescent device comprises an electroluminescent unit having an organic layer structure provided between a pair of electrodes and capable of emitting light on application of a voltage thereto. The electroluminescent unit is covered with a protective double layer made of an organic barrier layer and an inorganic barrier layer formed on the unit in this order.

Abstract: Disclosed is a practicable, image display device comprising a color-changing array 2 of a plurality of light-shielding layers 21 and a plurality of color-changing layers 22, of which at least one is a fluorescent layer, as disposed in series on a light-transmissive substrate 1 with being laterally spaced, and an array of a plurality of light-emitting layers 3 as laterally spaced to be in the position corresponding to each color-changing layer 22 in such a manner that the color-changing layers 22 receive emitted light from the light-emitting layers 3 to change it into different colors. The device is characterized in that the surface of the color-changing array 2 that faces the array of light-emitting layers 3 is planarized to thereby reduce its surface roughness to 2.0 .mu.m or lower. The images formed by the device have high visibility with little color mixing and color spread. The producibility of the device is high.

Abstract: A display panel using an organic electroluminescent material, includes: a substrate; a plurality of first type electrodes formed on the surface of one side of the substrate; a plurality of electrically insulating partition walls partially covering the first type electrodes; a plurality of organic electroluminescent layers formed on exposed portions of the first type electrodes; a plurality of second type electrodes formed on the organic electroluminescent layers; and a protection layer formed on the above one side of the substrate to cover and seal up the first type electrodes, the electrically insulating partition walls, the organic electroluminescent layers, and the second type electrodes. In particular, the protection layer has a plurality of openings each of which is formed adjacent to a side face of a partition wall so as to partially expose the side face.

Abstract: A display having a plurality of addressable pixels and a method for constructing the same. The display includes a substrate having a first conducting layer thereon. The conducting layer includes a plurality of parallel row electrodes having edges separated by insulating material. A first polymer layer constructed from one or more thin films overlies the parallel row electrodes. An insulating layer overlies the polymer layer, the insulating layer having windows therein defining pixels for the display. The insulating layer overlies the edges of the row electrodes while providing access to the first polymer layer in the area of the pixels. A second conducting layer overlies the insulating layer and includes a plurality of separated column electrodes. Each column electrode crosses a plurality of the row electrodes and is located over the windows in the insulating layer at points defining the pixels.

Abstract: Preparation of thermally and/or photochemically crosslinkable oligomeric precursors and the use of those oligomeric precursors in preparing crosslinked electroactive polymers are described. The oligomers, polymers, and synthetic methods find utility in the manufacture of opto-electronic devices such as light emitting diodes, photoconductors, photovoltaic cells, and the like, wherein synthesis of electroactive films and polymeric multilayers is required.

Abstract: A display device includes an EL element for signal light which is based on the segment matrix drive scheme and causes a plurality of areas to emit signal light containing light in a wavelength range other than the visible range, a photoconductive layer which generates carriers upon incidence of signal light, and an EL element for display light which is adjacent to the photoconductive layer. Signal light is irradiated onto desired areas of the photoconductive layer. Carriers are injected from the irradiated areas into the EL layer to emit display light containing visible light.

Abstract: An organic EL device, includes an anode, an anode, an organic hole transporting layer over the anode, an organic luminescent layer on the organic hole transporting layer, an inorganic electron transporting layer over the organic luminescent layer, and a cathode on the electron transporting layer.

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 electroluminescent device comprised of an anode, a hole transporting layer, a light emitting layer, and a cathode, wherein said light emitting layer contains a component of the formula ##STR1## wherein Ar.sup.1, Ar.sup.2, Ar.sup.3, and Ar.sup.4 are each independently aryl or optionally aliphatic; R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen, aliphatic, halogen, and cyano; L is a suitable linking group; and n is a number of from 0 to about 3.

Abstract: An organic electroluminescent device (1) has an organic emitter layer (5) disposed between, on the one side, a common electrode (6) and, on the other side, a first and second electrode (3A, 3B) which are mutually interlaced and independently driveable. When driven by means of, respectively, the first and second electrode (3A, 3B), respectively, a first and second pattern-wise light-emitting surface emerges. Using different light-emitting patterns, optionally in combination with light-absorbing patterns, a group of icons differing in color and/or shape can be displayed selectively using the same part of a display area.

Abstract: A fixed pattern display device of the dynamic drive type with high definition including cathodes formed into a fine pattern by conventional photolithography. The cathodes are made of a metal material having a low resistance and arranged on an insulating substrate in the form of wiring patterns for fixed display segments of each of display patterns together with the display patterns. ITO which is resistant to water is exposed in the form of anodes each acting as a common electrode, resulting in arrangement of any protective film being eliminated.

Abstract: An EL element having a color filter formed on an upper electrode thereof enables a decrease in the pixel loss or line defects. In the EL element, a lower transparent electrode, first insulating layer, luminescent layer and upper transparent electrode are laminated on a glass substrate. Further, a color filter is formed on the upper transparent electrode. As the color filter there is used a posi-resist having an average molecular weight in a range of from 100 to 50000 or a nega-resist having a polymerization reaction percentage in a range of from 5% to 70%.

Abstract: The invention relates to an encapsulated organic light emitting device having an improved protective covering comprising a first layer of passivating metal, a second layer of an inorganic dielectric material and a third layer of polymer.

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: A description is given of a method of providing an electroluminescent device (20) comprising an active layer (5) of conjugated 2,5-alkyl- or alkoxy-substituted poly(p-phenylene vinylene) with inactive regions (51) and emissive regions (52) by means of patterned irradiation with UV light. Both regions (51) and (52) of the active layer (5) show a clear difference in electroluminescence, electrical resistance and solubility. By means of the above-described effects, displays can be manufactured without making use of structured electrode layers (3) and (11).