Patent application number | Description | Published |
20080246606 | Display Monitoring Systems - A consumer electronic device (CED) having a display and including at least one light sensor for recalibrating said display at intervals, wherein said display and said at least one light sensor are mounted within different parts of a unitary housing such that when said CED is not in use said light sensor is able to monitor light from said display. Preferably the different parts of the unitary housing comprise two hinged parts, one mounting the display, the other at least a light sensing portion of the sensor. | 10-09-2008 |
20090302331 | OPTOELECTRONIC DISPLAY AND METHOD OF MANUFACTURING THE SAME - An optoelectronic display comprising a plurality of pixels, each pixel comprising a plurality of sub-pixels, wherein the optoelectronic display comprises a colour-forming layer which is patterned providing a plurality of discrete colour-forming regions in a two-dimensional array, and wherein an addressing array is provided for addressing the discrete colour-forming regions, at least some of the discrete colour-forming regions having portions which are separately addressable by the addressing array, each portion defining a sub-pixel of the optoelectronic display. | 12-10-2009 |
20100026725 | Display Drive Systems - This invention generally relates to methods, apparatus and computer program code for improved OLED (organic light emitting diode) display drive systems, in particular to compensate for burn-in. | 02-04-2010 |
20110096066 | Active Matrix Displays - An active matrix OLED display ( | 04-28-2011 |
20110181630 | Active Matrix Displays - This invention relates to active matrix OLED (Organic Light Emitting Diode) displays, in particular to display panels with integrated negative capacitance circuits and to active capacitance compensation. We describe an active matrix OLED display comprising a glass panel bearing a plurality of lines of OLED pixels, each with an associated active matrix driver circuit having a programming connection for programming a brightness of the associated OLED, programming connections of a line of pixels being connected to a programming line of said display, and wherein said active matrix OLED display further comprises a plurality of capacitors on said glass panel, each having a first plate connected to an end of a respective said programming line and having a second plate for connecting to a negative capacitor circuit to compensate for a capacitance of said programming line. | 07-28-2011 |
20110186830 | Method of Making Organic Thin Film Transistors Using a Laser Induced Thermal Transfer Printing Process - The present invention provides a method of manufacturing an organic thin film transistor (TFT), comprising: providing a substrate layer; providing a gate electrode layer; providing a dielectric material layer; providing an organic semiconductor (OSC) material layer; providing a source and drain electrode layer; and wherein one or more of the layers is deposited using a laser induced thermal imaging (LITI) process. Preferably the organic TFT is a bottom gate device and the source and drain electrodes are deposited on an organic semiconductor layer, or over a dielectric material layer using LITI. Further preferably a dopant material may be provided between the OSC material and the source and drain electrode layer, wherein the dopant material may also be deposited using LITI. Also preferably, wherein the dopant may be a charge neutral dopant such as substituted TCNQ or F4TCNQ. | 08-04-2011 |
20110291084 | Display Device and Backplane - A display device comprises a plurality of electroluminescent display pixels and a plurality of semiconductor elements (“chiplets”), each pixel being electrically connected to the output of one or more of said semiconductor elements through a via hole in an electrically insulating layer for addressing the plurality of display pixels, and a plurality of colour filters and/or downconverters. The colour filters and/or downconverters and the semiconductor elements are provided on the same surface of the device. | 12-01-2011 |
20110291572 | Display Drivers - An active matrix display comprises a display area of the matrix comprising drive circuitry including a control circuit comprising chiplets outside the display area. The output of the control circuit is distributed among the plurality of chiplets. This arrangement is advantageous in that the chiplets allow for a much smaller fan-in and fan-out structure, thus allowing a much larger percentage of the substrate to be devoted to display area. | 12-01-2011 |
20110291992 | Optical Sensor Array - An optical sensor array comprises a photo-sensitive area formed by an array of chiplets having individual light-sensitive elements, each element configured to produce a signal or signals in response to incident light. The displacement of a chiplet from a predetermined position is derivable from the output signal or signals of the element or elements associated with the chiplet. The arrangement provides a method of measuring the displacement of at least one chiplet in an active display. | 12-01-2011 |
20130248829 | SEMICONDUCTOR APPLICATION METHOD AND PRODUCT - A system and method for driving pixels of an OLED display using a backplane for an active matrix device comprising a substrate arranged to electrically connect to a plurality of semiconductor elements, a plurality of first semiconductor elements mounted on the substrate, each comprising one or more circuit elements configured to drive one or more active elements of the active matrix device, and a plurality of second semiconductor elements mounted on the substrate, each comprising one or more circuit elements configured to control one or more of the first semiconductor elements. | 09-26-2013 |
Patent application number | Description | Published |
20080291122 | Digital Signal Processing Methods and Apparatus - This invention generally relates to methods, apparatus and computer program code processing digital data using non-negative matrix factorisation. | 11-27-2008 |
20090128459 | Image Processing Systems - This invention generally relates to image processing systems, and more particularly to systems and methods for displaying images using multi-line addressing (MLA) or total matrix addressing (TMA) techniques, with reduced noise. Embodiments of the invention are particularly useful for driving OLED (organic light emitting diode) displays. A method of driving an electroluminescent display to display an image, the method comprising: inputting image data for said image; determining, using said image data, a first set of image subframe data for a first plurality of image subframes each representing a common spatial portion of said image, wherein said first plurality of image subframes combine to approximate said common spatial portion of said image; driving said display using said first set of image subframe data; determining, using said image data, a second set of image subframe data for a second plurality of image subframes each representing said common spatial portion of said image, wherein said second plurality of image subframes combine to approximate said common spatial portion of said image; and driving said display using said second set of image subframe data | 05-21-2009 |
20090128571 | Data Processing Hardware - This invention generally relates to data processing hardware, and more particularly to hardware accelerators and related methods for matrix factorisation especially non-negative matrix factorisation (NMF). Embodiments of the invention are particularly useful for driving electroluminescent displays such as OLED displays. A matrix factorisation hardware accelerator for determining a pair of factor matrices (R;C) which when multiplied together approximate a target matrix, the hardware accelerator comprising: an input to receive an input data matrix representing said target matrix; a first factor matrix memory for storing row and column data for a first factor matrix (R), said first factor matrix memory having a plurality of first data buses each associated with a respective block of said first factor matrix memory for accessing first factor matrix column data stored in the block; a second factor matrix memory for storing row and column data for a second factor matrix (C), said second factor matrix memory having a plurality of second data buses each associated with a respective block of said second factor matrix memory for accessing second factor matrix row data stored in the block; a matrix of processor blocks, each processor block having: a first processor block data bus coupled to one of said first data buses, a second processor block data bus coupled to one of said second data buses, and a result data output; a processor memory block for storing a portion of a matrix (Q) representing a difference between a product of said pair of factor matrices and said target matrix; and a data processor comprising at least one multiply-add unit, said data processor having a first input coupled to said processor memory block and a second input coupled to one or both of said first and second processor block data buses and having an output coupled to said result data output; and control circuitry to control writing of data from said input into said processor memory blocks of said matrix of processor blocks, to control reading of data from said first and second factor matrix memories for provision to said matrix of processor blocks, and to control writing of data derived from said result data outputs back to said first and second factor matrix memories to perform said matrix factorisation. | 05-21-2009 |
20090322724 | Image Processing Systems - This invention generally relates to image processing systems. More particularly it relates to systems and methods for displaying images using multi-line addressing (MLA) or total matrix addressing (TMA) techniques, and to techniques for post-processing of data for display generated by these techniques. Embodiments of the invention are particularly useful for driving OLED (organic light emitting diode) displays. We describe a method of driving an electroluminescent display to display an image using a plurality of temporal sub-frames, data for a said sub-frame comprising a first set of drive values (R;C) and second set of drive values (C;R) for driving respective first and second axes of said display, a said sub-frame having an associated sub-frame display time. The method comprises: determining a said sub-frame display time for a displayed sub-frame responsive to one or more of said drive values for the sub-frame; and driving said display to display said temporal sub-frames for respective said sub-frame display times. | 12-31-2009 |
20100253710 | Pixel Driver Circuits - This invention relates to pixel driver circuits for active matrix optoelectronic devices, in particular OLED (organic light emitting diodes) displays. We describe an active matrix optoelectronic device having a plurality of active matrix pixels each said pixel including a pixel circuit comprising a thin film transistor (TFT) for driving the pixel and a pixel capacitor for storing a pixel value, wherein said TFT comprises a TFT with a floating gate. | 10-07-2010 |
20120081416 | MULTI-LINE ADDRESSING METHODS AND APPARATUS - 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 said column electrodes with a first set of column drive signals; and driving two or more of said row electrodes with a first set of forward bias row drive signals at the same time as said column electrode driving with said column drive signals; then driving said plurality of column electrodes with a second and subsequent sets of column drive signals; and driving said two or more row electrodes with a second and subsequent sets of forward bias row drive signals at the same time as said column electrode driving with said second column drive signals. | 04-05-2012 |
20130194644 | IMAGE DISPLAY SYSTEMS - We describe a holographic image projector, comprising: a laser light source to provide light at a laser wavelength; a first spatial light modulator (SLM) to display a hologram, wherein said first SLM is illuminated by said laser light source; intermediate image optics to provide a first intermediate real image plane at which a real image produced by said hologram displayed on said first SLM is formed; a wavelength-conversion material located at said first intermediate real image plane to convert said laser wavelength to at least a first output wavelength different to said laser wavelength; and second optics to project light from said real image at said output wavelength to provide a displayed image. | 08-01-2013 |
20140232695 | Touch-Sensitive Display Devices - We describe a touch sensitive image display device including: an image projector to project a displayed image onto a surface; a touch sensor light source to project a plane of light above the displayed image; a camera to capture a touch sense image from light scattered from the plane of light by an approaching object; and a signal processor to process the touch sense image to identify a location of the object. The touch sensor light source is amplitude modulated, and signal processor is further configured to process a plurality of the touch sense images captured when said touch sensor light source is off to compensate for ambient light in a touch sense image captured when the touch sensor light source is on. | 08-21-2014 |
20140240293 | Touch Sensitive Display Devices - A touch sensitive device, the device comprising: a touch sensor light source to project a plane of light above a surface: a camera directed to capture a touch sense image from a region including at least a portion of said plane of light, said touch sense image comprising light scattered from said plane of light by a plurality of said objects simultaneously approaching or touching said surface; a signal processor coupled to said camera, to process a said touch sense image from said camera to identify a lateral location of each of said objects; and an output object position output, to provide output object positions for said plurality of objects; and wherein said signal processor is further configured to: input a succession of said touch sense images; process each said touch sense image to identify a plurality of candidate object touch positions; and filter said candidate object touch positions from said successive touch sense images to link said candidate object touch positions to previously identified output object positions for said plurality of objects; and update said previously identified output object positions using said linked candidate object touch positions. | 08-28-2014 |
20140247249 | Touch Sensitive Display Devices - Some embodiments of the present invention provide touch sensitive image display devices including: an image projector to project a displayed image onto a surface; a touch sensor light source to project a plane of light above the displayed image; a camera to capture a touch sense image from light scattered from the plane of light by an approaching object; and a signal processor to process the touch sense image to identify a location of the object. The light path to the touch sensor camera includes a keystone-distortion compensating topical element, in particular a convex curved aspherical minor. | 09-04-2014 |