Abstract: A device, comprising: an unplanarised plastic substrate; an electrically and/or optically functional layer formed on the unplanarised substrate; a planarisation layer formed over the functional layer; at least a first conductor layer and a semiconductor layer formed over the planarization layer, wherein the first conductor layer defines at least source and drain electrode circuitry for one or more transistor devices, and the semiconductor layer defines semiconductor channels for said one or more transistor devices.

Abstract: A device, comprising: a display component; and a drive component comprising a stack of layers defining an array of display pixel conductors each connected within the stack of layers to a drive conductor by a respective radiation-sensitive channel, wherein a change in the intensity of radiation to which a radiation-sensitive channel is exposed causes a change in the electric potential at the respective display pixel conductor relative to a drive voltage applied to the drive conductor and the change in the electric potential at the respective display pixel conductor causes a change in the display of the respective pixel area of the display component.

Abstract: A technique, comprising: providing a pixelated display unit comprising an array of pixels, wherein the optical output for each pixel is independently controllable; applying a first colour filter overlay to a viewing surface of said pixelated display unit, said first colour filter overlay defining a first colour pattern including one or more areas of a single colour continuously extending over a plurality of pixels; operating said pixelated display unit to produce regions of differing brightnesses within said first colour pattern; peeling said first colour filter overlay from said viewing surface of said display unit; applying a second colour filter overlay to said viewing surface of said display unit, said second colour filter overlay defining a second colour pattern including one or more areas of a single colour continuously extending over a plurality of pixels; and operating said pixelated display unit to produce regions of differing brightnesses within said second colour pattern.

Abstract: We describe a display system comprising an electrooptic display coupled to a display driver and including an induced voltage compensation circuit. The compensation circuit comprises a system to measure a voltage applied a common pixel electrode of the display, and one or both of: a system to measure a voltage swing on a pixel select line of the display, and a system to measure a change in voltage on the common pixel electrode due to a voltage induced on a pixel drive electrode of the display. The compensation circuit also includes a system to apply a voltage to the common pixel electrode, responsive to a combination of the measured applied voltage and one or both of the measured voltage swing and the measured change in voltage, to compensate for the induced voltage.

Abstract: A multiple layer pixel architecture for an active matrix display is provided in which a common bus line is formed on a metal level which is separate from that on which the gate electrodes of the thin-film transistors (TFTS) are formed. A multilayer electronic structure adapted to solution deposition, the structure includes a TFT for driving a pixel of an active matrix optoelectronic device and a capacitor for storing charge to maintain an electrical state of said active matrix pixel, wherein the structure includes a substrate bearing at least four conducting layers separeted by at least three dielectric layers, first and second ones of said conducting layers defining drain/source electrodes and a gate electrode of said transistor respectively, and third and fourth ones of said conducting layers defining respective first and second plates of said capacitor, and wherein said capacitor and said transistor are laterally positioned such that they overlap in a vertical direction.

Abstract: An integrated circuit (IC) for driving a flexible display includes a first layer including spatially non-repetitive features, the first layer deposited on a flexible substrate, the spatially non-repetitive features not substantially regularly repeating in both of two orthogonal directions (x,y) in the plane of the substrate. The IC further includes a second layer including spatially repetitive features with the second layer being deposited on said first layer. The first and second layers are aligned to one another so as to allow electrical coupling between said non-repetitive and said repetitive features, and wherein distortion compensation is applied during deposition of said repetitive features to enable said alignment.

Abstract: A touch sensitive display device includes a display fabricated on a flexible substrate, the display having a viewing surface; and a plurality of touch sensitive elements under the display, each of the plurality of touch sensitive elements including a touch sensitive sensor, the sensors being operable by touching the viewing surface of the display, and each of the plurality of touch sensitive elements having an output for outputting a signal responsive to the viewing surface being touched, wherein each of the plurality of touch sensitive elements defines a region of the viewing surface in which the touch sensitive element produces an output in response to a touch, and wherein the plurality of touch sensitive elements are arranged such that two or more substantially simultaneous touches of different regions of the viewing surface produces output signals corresponding to the two or more touches of the viewing surface.

Abstract: A method of fabricating an organic electronic device is provided. The organic electronic device has a structure including an upper conductive layer and an underlying layer immediately beneath said upper conducting layer and having at least one solution process able semiconducting layer. The upper conducting layer preferably has a thickness of between 10 nm and 200 nm. The method includes patterning said upper conductive layer of said structure by: laser ablating said upper conductive layer using a pulsed laser to remove regions of upper conductive layer from said underlying layer for said patterning; and wherein said laser ablating uses a single pulse of said laser to substantially completely remove a said region of said upper conductive layer to expose said underlying layer beneath.

Abstract: We describe an architecture for a large-area, touch-sensitive electronic document reading device which is able to tolerate bending. In broad terms, a control circuit board is mounted behind a flexible display structure in the housing and at respective points of attachment of first and second laminar connectors to the control circuit board each laminar connector has a plurality of electrical connections running along a longitudinal direction of the laminar connector and disposed alongside one another in a transverse direction across the laminar connector. At the respective points of attachment of the first and second laminar connectors to the control circuit board the longitudinal directions of the laminar connectors are aligned such that, when said device is flexed, a relative displacement in said longitudinal direction between said control circuit board and of said display structure can be tolerated without damage to the control electronics, touch sensitive display screen or connections therebetween.

Abstract: A technique for creating a conductive connection between a contact part (24) of a display back plane (34) and a common electrode (20) of a display front plane (32), comprising the step of compressing a compressible conductive component (30) between the display front plane (32) and the display back plane (34), wherein the method further comprises the step of interposing one or more layers (10, 36) having a low modulus of elasticity not larger than 5 GPa between the contact part (24) and the compressible conductive component (30) prior to the compressing step.

Abstract: We describe power control techniques for an document reader with an electrophoretic display. In embodiments the document reader comprises a main processor to display information and at least one secondary processor to detect, say, a user input gesture; a battery to provide power to both processors; and a controllable switch coupled between said battery and said main processor and having a control line coupled to said secondary processor, to switch power from said battery to said main processor while said secondary processor is powered. In embodiments a power consumption measured in months is desired so that rather than put the main processor into a standby mode power to the main processor is switched off entirely but the system is arranged to be able to start-up quickly from this configuration.

Abstract: A method of fabricating an electronic device, the device including a plurality of layers on a substrate, the layers including an upper conductive layer and at least one patterned underlying layer between said conductive layer and said substrate. The method includes patterning said underlying layer, and patterning said upper conductive layer by laser ablation using a stepwise process in which successive areas of said upper conductive layer are ablated by successively applied laser patterns. The successively applied laser patterns overlap one another in an overlap region. The method further includes configuring a said laser pattern and said patterned underlying layer with respect to one another such that in a said overlap region said patterned underlying layer is substantially undamaged by said stepwise laser ablation.