Abstract: Biocompatible matrices or implants on which one or more specific cell-interactive molecules (“biomolecules”) can be immobilized have been developed. The matrices allow for the independent control of ligand concentration and matrix strength. In one embodiment, the matrix or implant is modified with one or more moieties capable of complexing bioconjugates prepared from one or more biomolecules. Suitable moieties include phenyl boronic acid complexing agents, such as salicylhydroxamic acid, which can complex to one or more biomolecules containing one or more phenyl boronic acid moieties. The biomolecules may be anchored to the matrix via a spacer molecule, which may allow for greater mobility of the biomolecules in aqueous solution. In one embodiment, the matrix is a hydrogel material which has been doubly-derivatized, wherein ligand concentration and matrix strength can be independently controlled.

Abstract: The present invention relates to an inkjet print head (1) comprising at least one nozzle chamber (2), having a nozzle aperture (3) defined in one wall thereof for the ejection of printing fluid out of said aperture (3), and a printing fluid supply channel interconnected with said nozzle chamber (2). A printing fluid droplet tail release guide arrangement (4) is arranged at a predetermined position at an edge of a circumference of said aperture (3). The present invention further relates to a method for increasing droplet placement accuracy in an inkjet print head having at least one nozzle chamber with a nozzle aperture defined in one wall thereof for the ejection of printing fluid out of said aperture. The method comprises the step of providing a printing fluid droplet tail release guide arrangement at a predetermined position at an edge of a circumference of said aperture.

Abstract: The invention relates to an electric device comprising at least one organic diode, wherein said electric device comprises driving means for driving said organic diode in at least a light sensing state and pre-pulse means for applying one or more electrical pulses to said organic diode prior to driving said organic diode in said light sensing state. A positive electric pre-pulse has been observed to improve the light sensitivity of the organic diode, whereas a negative pre-pulse was found to decrease the time that the organic diode is in the light sensing state for accurately measuring or sensing incident light.

Abstract: A method for driving an organic LED display device having a first and a second electrode sandwiching an organic layer defining a plurality of light emitting elements. The method comprises applying to a light emitting element a voltage within a specified voltage range, within which the risk of short circuits between the electrodes is reduced, and controlling the duty cycle of said light emitting element, so that a desired light intensity is emitted from said light emitting element. The probability of short circuits in pixels of an organic LED display device is thus reduced by avoiding operating the display pixels within voltage ranges where the chance of short circuits is high. This limitation of the applied voltage is compensated by controlling the duty cycle of the light emitting element.

Abstract: The invention relates to a display device for displaying an image comprising a plurality of display pixels (2), a controller (3) for generating a driving signal (8) for driving the pixels (2), and sensors (9; 11; 14), wherein the sensors (9; 11; 14) are able to monitor operating conditions of the pixels (2), and the controller (3) is adapted to receive data related to the operating conditions from the sensors (9; 11; 14) to determine a brightness change of the pixels (2) caused by the operating conditions and to generate the driving signal (8) in dependence on the brightness change.

Abstract: The invention provides a tool to select reliable organic LED devices, where the risk for failure before the end of its lifetime is low. This tool comprises the steps of: i) subjecting the device to a high electric field over the electroluminescent layer. This leads to a division of the devices into two, clearly separated, populations, namely one population with a low leakage current (current through the electroluminescent layer in reverse voltage operation) and one population with a high leakage current. In this step, the first population is selected in accordance with a current criterion. ii) detecting instabilities in the leakage current, referred to as noise. It has been established that these instabilities arise in particular at reverse driving voltages between 1 and 10 Volts. These instabilities are a measure of the occurrence of early failures during operation. In this step, the devices are selected in accordance with a noise criterion.

Abstract: This invention relates to a display device (5) comprising first and a second sub-pixel (5a, 5b), said first sub-pixel (5a) emitting light of a first wavelength (?1) and said second sub-pixel (5b) emitting light of a second wavelength (?2), said first sub-pixel (5a) comprising a first organic electroluminescent layer (1a), such as a polymer or a small-compound molecule layer, which is sandwiched between a front and a back electrode (2a, 3a), with a first state in which an emission driving signal (Val) is applied across said first layer (1a) for generating an emission state in which light of said first wavelength (?1) is emitted, and with a second state in which a sensing driving signal (Vas) is applied across said first layer (1a), whereby light of said second wavelength (?2) incident on said first sub-pixel (5a) can be detected. Preferably, said first electrodes (2a, 3a) are held at essentially the same potential.

Abstract: This invention relates to a method of driving a dual-function light-emitting and light-sensing device (5) comprising an organic electroluminescent layer (1), such as a polymer layer or a small molecule compound layer, which is sandwiched between a first and a second electrode (2,3), comprising the following steps:—applying, during a emission state (t1), a first emission signal (V1, J1) to said electroluminescent layer (1), said first signal being such that light is generated by and emitted from said electroluminescent layer (1), and—applying, during a sensing state (t2), a second driving signal (V2,J2) to said organic electroluminescent layer (1), said second driving signal being such that the power of said second driving signal has essentially a zero value for accurately detecting an electric current generated in said organic electroluminescent layer when said organic electroluminescent layer is hit by external light This invention also relates to a dual-function light-emitting and light-sensing device and a