Abstract: Disclosed are compositions, useful in ink jet printing methods, that prevent clogging during dispensing, achieve stable dispensing, prevent precipitating of content matter during dispensing, and prevent phase separation during film formation. Also disclosed are uniform, homogenous, functional films formed using the compositions and manufacturing methods therefor, as well as organic EL devices and other such display devices and manufacturing methods therefor. The compositions contain a functional material and a solvent comprising at least one benzene derivative having one or more substituents, whereby the substitiuents have at least three carbon atoms in total.

Abstract: A method for manufacturing an organic semiconductor device having a plurality of pixels, said method comprising: providing a substrate comprising a patterned layer of well-defining banks (308); depositing a first conductive material (310, 312) in the wells and over the well-defining banks (308), the first conductive material forming first electrodes (310) in the wells and bus-bars (312) over the well-defining banks (308) with an electrical break therebetween; depositing an organic semiconductive layer (318) over the first electrodes (310) in the wells; and depositing a second conductive material (320) over both the organic semiconductive layer (318) and the bus-bars (312) forming a continuous second electrode (320) over the organic semiconductive layer (318) and the bus-bars (312).

Abstract: An organic optoelectronic device, such as an organic light emitting device, includes an anode, a cathode and an active organic layer between the anode and the cathode. The cathode includes a layer including a complex salt, a first conductive layer, and a second conductive layer over the first conductive layer, and provides a stable device.

Abstract: A semiconductive hole transport material containing polar substituent groups, the polar substituent groups substantially not affecting the electronic properties of the hole transport material and the hole transport material being soluble in a polar solvent.

Abstract: A method of driving an electro-optic display, the display having a plurality of pixels each addressable by a row electrode and a column electrode, the method including: receiving image data for display, the image data defining an image matrix; factorizing the image matrix into a product of at least first and second factor matrices, the first factor matrix defining row drive signals for the display, the second factor matrix defining column drive signals for the display; and driving the display row and column electrodes using the row and column drive signals respectively defined by the first and second factor matrices.

Abstract: This invention relates to methods and apparatus for driving emissive, in particular organic light emitting diodes (OLED), displays using multi-line addressing (MLA) techniques. Embodiments of the invention are particularly suitable for use with so-called passive matrix OLED displays. A method of driving an emissive display, the display comprising a plurality of pixels each addressable by a row electrode and a column electrode, the method comprising: driving a plurality of column electrodes with a first set of column drive signals; and driving two or more row electrodes with a first set of forward bias row drive signals at the same time as the column electrode driving with the column drive signals; then driving the plurality of column electrodes with a second and subsequent sets of column drive signals; and driving the two or more row electrodes with a second and subsequent sets of forward bias row drive signals at the same time as the column electrode driving with the second column drive signals.

Abstract: A light-emissive device is prepared by depositing a polymer layer on a substrate. The deposition process utilizes a formulation comprising a conjugated polymer dissolved in a solvent, the solvent including a trialkyl-substituted aromatic hydrocarbon wherein at least two of the alkyl substituents are ortho to one another. The deposition of the polymer layer on the substrate may be accomplished by an ink-jet method.

Abstract: An organic transistor comprising source and drain electrodes; a gate electrode; an organic insulating layer between the gate electrode and the source and drain electrodes; and an organic semiconductive region between the insulating layer and the source and drain electrodes; wherein the organic semiconductive region comprises (a) a high mobility layer of an organic semiconductor and (b) a blocking layer of organic material positioned between the high mobility layer and the source and drain electrodes, in which the ionization potential of the organic material of the blocking layer exceeds the workfunction of the source and drain electrodes so as to inhibit charge injection from the source electrode into the blocking layer in the off-state.

Abstract: Disclosed are compositions, useful in ink jet printing methods, that prevent clogging during dispensing, achieve stable dispensing, prevent precipitating of content matter during dispensing, and prevent phase separation during film formation. Also disclosed are uniform, homogenous, functional films formed using the compositions and manufacturing methods therefor, as well as organic EL devices and other such display devices and manufacturing methods therefor. The compositions contain a functional material and a solvent comprising at least one benzene derivative having one or more substituents, whereby the substituents have at least three carbon atoms in total.

Abstract: A light-emissive device is prepared by depositing a polymer layer on a substrate. The deposition process utilizes a formulation comprising a conjugated polymer dissolved in a solvent, the solvent including a trialkyl-substituted aromatic hydrocarbon wherein at least two of the alkyl substituents are ortho to one another. The deposition of the polymer layer on the substrate may be accomplished by an ink-jet method.

Abstract: A touch screen display device includes a plurality of display pixels for generating an image, emitters interspersed among the display pixels and emitting light, and detectors interspersed among the display pixels for detecting light. The light from the emitters is coupled into a transparent substrate to reach the front surface which transmits light incident at an angle smaller than a critical angle and which totally internally reflects light which is incident at an angle greater than the critical angle. The display device further includes processing means coupled to the emitters and detectors for detecting the light reaching each detector from different specific emitters and determining the light that is received by each detector that may be due to direct reflection from a near-field object, and the light that is totally internally reflected and which may be frustrated by a touching object.

Abstract: A method of modifying a fluorinated polymer surface comprising the steps of depositing a first layer on at least a portion of the fluorinated polymer surface, the first layer comprising a first polymer, the first polymer being a substantially perfluorinated aromatic polymer; and depositing a second layer on at least a portion of the first layer, the second layer comprising a second polymer, the second polymer being an aromatic polymer having a lower degree of fluorination than said first polymer, whereby the second layer provides a surface on to which a substance having a lower degree of fluorination than the first polymer, e.g. a non-fluorinated substance is depositable.

Abstract: A semiconducting compound comprising the structure: where R1 to R4 independently comprise, but are not limited to, optionally substituted straight, branched or cyclic alkyl chains having 2 to 20 (e.g. 2 to 12) carbon atoms, alkoxy, amino, amido, silyl, alkyl, alkenyl, aryl or hetero aryl; where X1 and X2 independently comprise S, O, NR5 or SiR6R7 where R8 to R7 independently comprise C1 to C5 branched, straight or cyclic alkyl chains; and where Ar1 comprises a heterocyclic ring, and where n is an integer between 1 and 4.

Abstract: An apparatus such as a touch screen display includes correlated emitter-detector pairs for determining the amount of electromagnetic radiation received at a detector from its paired emitter. The apparatus comprises an array of emitters operable to emit electromagnetic radiation, an array of detectors for detecting the electromagnetic radiation, and drive control circuitry configured to control the array of emitters so that they emit pulses of electromagnetic radiation. The amplitude of the pulses is modulated using mutually orthogonal binary vectors such as a Paley construction of the Hadamard matrix. Each emitter has a different vector associated with it. Detection circuitry is provided to detect the electromagnetic radiation reaching each particular detector in the array of detectors using the mutually orthogonal binary vector associated with the correlated emitter to produce a correlation between particular emitter-detector pairs. The arrangement can discriminate between near field and touching objects.

Abstract: An optical device comprising an anode, a cathode comprising barium, strontium or calcium, and a layer of organic semiconducting material between the anode and the cathode wherein a layer of hole transporting and electron blocking material is located between the anode and the layer of organic semiconducting material.

Abstract: A method of manufacturing a transparent encapsulating sheet for a light-emissive device, the method comprising the steps: forming a plurality of cavities in one side of a transparent sheet of material for receiving light-emissive structures therein, said forming step producing a frosted surface comprising micro cracks in the cavities; coating said frosted surface with a low viscosity material whereby the micro cracks in the frosted surface are filled with the low viscosity material in order to form the transparent encapsulating sheet.

Abstract: The invention relates to a method and apparatus for the application of material to form a layer of an organic electroluminescent device. The material is sputter deposited typically from at least one target of material held in respect to a magnetron in a coating chamber. The magnetrons used can be unbalanced magnetrons and/or are provided with other magnetrons and/or magnet arrays in a closed field configuration. The material is found to be deposited in a manner which prevents or minimises damage to the device and hence reduces or removes the need for a barrier layer to be applied.

Abstract: Disclosed are compositions, useful in ink jet printing methods, that prevent clogging during dispensing, achieve stable dispensing, prevent precipitation of content matter during dispensing, and prevent phase separation during film formation. Also disclosed are uniform, homogenous, functional films formed using the compositions and manufacturing methods therefor, as well as organic EL devices and other such display devices and manufacturing methods therefor. The compositions contain a functional material and a solvent comprising at least one benzene derivative having one or more substituents, whereby the substituents have at least three carbon atoms in total.

Abstract: Display driver circuits are described for driving organic light emitting diode displays, particularly passive matrix displays with greater efficiency. Display driver control circuitry (506) comprises a frame memory interface (505) for reading data from a frame memory (504) for presentation on a passive matrix OLED display. A blank line identifier (507) identifies one or more substantially blank rows of pixels defined by the data in the frame memory and the control circuitry (506) skips past these rows when the passive matrix display is addressed. When blank lines are skipped the apparent brightness of the remaining lines increases and thus preferably the control circuitry includes a power controller (505) for reducing a power supply to the display in proportion to the number of skipped lines. The invention is particularly suited to a display driver providing a controlled current drive.

Abstract: A multiple wavelength light emitting device is provided wherewith the resonance strength and directivity between colors can be easily adjusted for balance. This light emitting device comprises a light emission means 4 for emitting light containing wavelength components to be output, and a semi-reflecting layer group 2 wherein semi-reflecting layers 2R, 2G, and 2B that transmit some light having specific wavelengths emitted from the light emission means and reflect the remainder are stacked up in order in the direction of light advance in association with wavelengths of light to be output. Light emission regions AR, AG, and AB are determined in association with the wavelengths of light to be output.