Abstract: An electroluminescent device including a transparent substrate, a securing layer, a light scattering layer, an electroluminescent unit including a transparent electrode layer, a light emitting element including at least one light emitting layer, and a reflecting electrode layer in that order, wherein the light scattering layer includes one monolayer of inorganic particles having an index of refraction larger than that of the light emitting layer and wherein the securing layer holds the inorganic particles in the light scattering layer.

Abstract: A method of controlling a passive matrix display having rows and columns of pixels including receiving an input image signal; determining drive signals for at least a first image field and a second image field; calculating a value that is correlated to a change in the total capacitive charge of the pixels that will occur between the display of the first image field and the second image field for at least one column of the passive-matrix, electro-luminescent display; adjusting at least one of the drive signals within first or second image fields to compensate for the change in total capacitive charge; and providing adjusted drive signals for each pixel.

Abstract: A drive circuit for rapidly interleaving image data displayed on an EL device is disclosed. The drive circuit includes a signal source that provides a image data signals. Each image data signal is provided for a specified load period. A multiplexer receives the image data signals, and in response to a selection signal selects one of the image data signals to provide a control signal that directs the EL device to emit light. Additionally, a controller causes interleaving of the image data during multiple display periods; each display period is shorter than the load period.

Abstract: A top-emitting OLED device, comprising: one or more OLEDs formed on a substrate; a light-scattering layer formed over the one or more OLEDs; a transparent cover; one or more color filters formed on the transparent cover; a color-conversion material layer formed over the color filters, or formed over or integral with the light-scattering layer; wherein the substrate is aligned and affixed to the transparent cover so that the locations of the color filters and color conversion material correspond to the location of the OLEDs, and the color-conversion material layer, color filters, and the light-scattering layer are between the cover and substrate, and a low-index gap is formed between the light-scattering layer and the color filters, with no light-scattering layer being positioned between the color conversion material layer and the low-index gap, wherein the color-conversion material layer is formed integrally with the light-scattering layer.

Abstract: A method of making a display includes providing a display substrate having a plurality of control electrodes in a display area; locating a plurality of chiplets responsive to a controller to provide current to the control electrodes, each chiplet having a separate substrate, at least one pixel connection pad electrically connected to a control electrode, and one or more test light emitters formed in the chiplet responsive to the current provided on the control electrodes to emit light; controlling the chiplets to pass current through one or more of the test light emitters formed in the chiplet to emit light; detecting the light emitted by the test light emitters to determine faulty chiplets or chiplet interconnections; replacing or repairing the faulty chiplets or chiplet interconnections; and forming an organic light emitting diode over the substrate in the display area connected to the control electrodes.

Abstract: To efficiently compensate a threshold value of a driving transistor. In a state where a first switching transistor is non-conductive and a second switching transistor in conductive, a sampling transistor is made conductive and a reference voltage is supplied from a signal line to write a threshold voltage of a driving transistor to a first capacitance. After that, in a state where first and second switching transistors and are non-conductive, the sampling transistor is made conductive and a signal voltage from the signal line is written to the first capacitance. Further, after that the sampling transistor is put into a non-conductive state, and the first and second switching transistors are put in a conductive state, to drive the driving transistor and supply current to a light emitting element.

Abstract: An OLED device including a cathode, an anode, and having therebetween a phosphorescent light-emitting layer that contains a light-emitting organometallic complex including a precious metal, a first ligand including an imidazole group and a second nitrogen heterocycle group, and at least one second different ligand.

Abstract: An organic EL display device capable of preventing generation of pseudo contours is provided. Digital data of pixels in one frame is stored in a frame memory, and display is performed according to the stored digital data. One frame is divided into a plurality of unit frames, each of which is divided into a plurality of sub-frames. In each of the sub-frames, display is performed for a bit corresponding to the digital data.

Abstract: The invention provides an OLED device comprising an anode, a cathode and a light-emitting layer located therebetween, said light-emitting layer comprising an anthracene host and a styrylamine blue light-emitting compound; and, located between the said light-emitting layer and the cathode, a first electron-transporting layer that is greater than 0.5 nm and less than 5 nm thick; and a second electron-transporting layer consisting essentially of an anthracene located between the first electron-transporting layer and the cathode. The first electron-transporting layer includes a compound with a less negative LUMO level than the anthracene in the second electron-transporting layer. Devices of the invention provide improvement in features such as efficiency.

Abstract: A method of making a cathode structure for an OLED provided over organic layers includes evaporating a first layer over the organic layers, such layer including a metal or metal alloy whose work function is less that 4.0 eV, or a material including an electron-injecting dopant and a reactive metal; depositing at least one second layer of an inorganic material over the first layer to form a buffer structure with the first layer; and sputtering a protective layer of a metal or metal alloy provided over the buffer structure.

Abstract: The present invention provides an EL display adapted to receive a three-color input image signal, including three gamut-defining EL emitters for emitting red, green, and blue colored light and two additional EL emitters for emitting at least two additional colors of light, the chromaticity coordinates of the at least two additional colors of light lying inside the gamut and near the Plankian Locus; a structure for providing a display white point; and a controller responsive, to the provided display white point and the input image signal for providing first separate drive signals for the three gamut-defining EL emitters and second separate drive signals for the two additional EL emitters, wherein the respective luminance values corresponding to the second separate drive signals are each a function of the input image signal and the distances between the display white point and the pseudo-blackbody points of the two additional colors.

Abstract: An organic device including at least two electrodes; at least one organic active layer, wherein the organic active layer is disposed in between two electrodes; and an electrode modification layer, wherein the electrode modification layer is disposed in between two electrodes and in contact with one of the electrodes; and the electrode modification layer includes a fluorocarbon compound selected from the materials having a chemical structure of (CxFy)n, wherein the “x”, “y”, and “n” are integers, and wherein 1<x?70, 1<y?50, and n?1.

Abstract: A method for adjusting the intensity values of colored pixels wherein each pixel has a first subpixel, a second subpixel, and a third subpixel, wherein each of the subpixels emits light of a different color and the lifetime of the first subpixel is lower than the lifetimes of the other colored subpixels, comprising: for each pixel, receiving intensity values corresponding to the intensity of each color subpixel in each pixel; and lowering the intensity value of the first subpixel in each pixel and still providing an acceptable pixel color to an observer.

Abstract: A tiled electroluminescent device that improves light-emission uniformity and reduces reflection from ambient light includes a first and a second electroluminescent device tile, a portion of the edge of the first device tile abutted with a portion of the edge of the second device tile leaving a gap between the first and second device tile edges, each device tile including a substrate, having an optical index and a level of transparency, and an electroluminescent diode for emitting light according to a distribution that is substantially Lambertian, whereby light is directed along an oblique angle to the surface of the substrate of the first tile and through the edge of the first device tile; and a filler located in the gap between the abutting edges of the first and second device tiles, the filler having an optical index and a level of transparency matched to the substrates.

Abstract: A driving method of a display device in which an image is displayed on a display panel having a display element arranged in a pixel matrix, includes comparing, among pixel data corresponding to a display content in each pixel, pixel data corresponding to an nth horizontal scan line of an Nth frame and pixel data corresponding to an nth horizontal scan line of an (N?1)th frame; and setting a brightness reduction ratio with respect to pixel data corresponding to the nth horizontal scan line of the Nth frame or a later horizontal scan line of the Nth frame based as a function of the comparison and all pixel data corresponding to the (N?1)th frame or all pixel data from the nth horizontal scan line of the (N?1)th frame to an (n?1)th horizontal scan line of the Nth frame and controlling power supplied.

Abstract: An electroluminescent (EL) subpixel having a readout transistor is driven by a current source when the drive transistor is non-conducting. This produces an emitter-voltage signal from which an aging signal representing the efficiency of the EL emitter can be computed. The aging signal is used to adjust an input signal to produce a compensated drive signal to compensate for changes in efficiency of the EL emitter.

Abstract: An area-emissive light-emitting diode (LED) device comprises a substrate having an internal substrate surface, an external substrate surface opposite the internal substrate surface, and a substrate edge; an array of area-emissive LED pixels formed on the internal substrate surface with an edge gap between the substrate edge and the LED pixel on the internal substrate surface nearest the substrate edge; and a light-extraction structure formed in the edge gap and at least partially exterior to the LED pixels.

Abstract: The rate of reading from a memory for storing display irregularity correction data is lowered. At the time of display, calculation is carried out in a correction calculation section 12 using an input signal and correction data in RAM 22, and brightness inconsistency correction is carried out. The way in which correction calculation is carried out in the correction calculation section 12 is changed for every frame.

Abstract: The present invention relates to 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. It provides improvement in features such as efficiency and drive voltage.

Abstract: A method of measuring a panel current in an active matrix organic electroluminescence display panel, wherein when a current flowing through a display panel when one or a plurality of pixels are caused to emit light is measured, a flow-in current flowing into the display panel from a side of a high voltage and a flow-out current flowing out from the display panel toward a side of a low voltage are simultaneously measured, and a value of a panel current is determined using both obtained measurement results.