PLASTIC LOGIC LIMITED Patent applications |
Patent application number | Title | Published |
20160035764 | PROCESSING SUBSTRATES USING A TEMPORARY CARRIER - A technique comprising: securing a device substrate ( | 02-04-2016 |
20160035763 | PROCESSING SUBSTRATES USING A TEMPORARY CARRIER - A technique comprising: securing a device substrate ( | 02-04-2016 |
20150138736 | ELECTRONIC READING DEVICE - A flexible electronic reading device, the device comprising a display part and a handle, wherein said display part comprises: a display backplane on a flexible substrate; and a display mounted over said display backplane; wherein said handle is located at one edge of said display backplane and contains display interface electronics for said display; and wherein said display part of said electronic reading device comprises a unitary, continuous structure lacking a separate housing. | 05-21-2015 |
20140104155 | DISPLAY SYSTEMS - 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. | 04-17-2014 |
20140073074 | DISTORTION TOLERANT PIXEL DESIGN - A method of manufacturing a flexible display is provided, which includes depositing a first layer comprising a plurality of thin film transistors (TFTs) on a flexible substrate and depositing a second layer comprising a plurality of pixel electrodes above the first layer with each pixel electrode connected to a respective TFT via a respective via connector between the first and second layers. A display medium responsive to signals on the pixel electrode can be deposited on the second layer for displaying an image on the second layer. A third layer comprising colour filters for filtering an image displayed on the display medium can be aligned to the second layer. The third layer can be deposited and aligned on the second layer such that each colour filter is substantially aligned to a respective pixel electrode to compensate for distortions in the first layer caused by distortions in the flexible substrate. | 03-13-2014 |
20140071557 | PIXELLATED DISPLAY DEVICES - A method of producing a plurality of pixellated display devices, each device including a first component comprising an array of independently controllable pixel electrodes; and a second component comprising an array of pixel filters comprising at least two different types of pixel filters of differing optical transmission characteristics, each pixel filter being associated with a respective one of said pixel electrodes; wherein the method comprises: producing said first component by a production method that inevitably results in some distortion within the array of pixel electrodes causing up to a maximum degree of variation in pixel electrode pitch between different regions of said array of pixel electrodes; applying said second component to said first component by a technique that can result in up to a maximum degree of misalignment between an alignment reference position on the first component and an alignment reference position on the second component; and configuring said array of pixel filters as an array of pixel filters in a neutral framework, said neutral framework defining a separation distance between each pixel filter that is sufficiently large to prevent any pixel filter of the array of pixel filters overlapping with more than one of said pixel electrodes even with said maximum variation in pixel electrode pitch between different regions of said array of pixel electrodes and with said maximum degree of misalignment between said alignment reference position on the first component and said alignment reference position on the second component. | 03-13-2014 |
20140071078 | ELECTRONIC DOCUMENT READING DEVICES - 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. | 03-13-2014 |
20140057433 | PIXEL CAPACITORS - A technique comprising: forming laterally-extending switching circuitry of a device for controlling an overlying laterally-extending array of pixel conductors of said device; forming an electrically conductive laterally-extending patterned screen over said switching circuitry via a first insulating region, said patterned screen defining holes for receiving conductive interlayer connects between said switching circuitry and said array of pixel conductors; and thereafter: forming a second insulating region over said patterned screen, forming said array of pixel conductors over said patterned screen via said second insulating region for capacitative coupling with said patterned screen, forming through holes through at least said first and second insulating regions at the locations of said holes defined in said patterned screen, and forming said interlayer connects in said through holes; and wherein said patterned screen is configured such that the area of overlap between the array of pixel conductors and underlying conductive elements is substantially constant within a range of lateral positions of the pixel conductors relative to the switching circuitry, which range is greater in a first direction than 40% of the pitch of the pixel conductors in said first direction. | 02-27-2014 |
20140048921 | ENCAPSULATED ARRAYS OF ELECTRONIC SWITCHING DEVICES - An electronic switching device array encapsulated in an encapsulating structure; wherein said array is exposed to one or more gas pockets between said array and said encapsulating structure. | 02-20-2014 |
20140048835 | REFLECTIVE DISPLAY DEVICES - A technique of producing a control component for a reflective display device, comprising: forming an array of electronic switching devices; forming over said array of electronic switching devices an insulator region defining a controlled surface topography; and forming on the patterned surface of the insulator region by a conformal deposition technique a substantially planar array of reflective pixel conductors each independently controllable via a respective one of the array of electronic switching devices, wherein each pixel conductor exhibits specular reflection at a range of reflection angles relative to the plane of the array of pixel conductors for a given incident angle relative to the plane of the array of pixel conductors. | 02-20-2014 |
20130299815 | ELECTRONIC DEVICES - A device comprising an array of transistors, including: patterned conductive layers located at lower and upper levels in a stack of layers on a substrate, which patterned conductive layers define gate conductors and source-drain electrodes of the array of transistors; wherein the stack of layers further comprises a dielectric layer below said lower level, and a further patterned conductive layer below said dielectric layer; and wherein said further patterned conductive layer both provides an electrical function in said array of transistors via said dielectric layer, and defines openings via which the dielectric layer serves to increase the strength of adhesion between the device substrate and the patterned conductive layer at said lower level. | 11-14-2013 |
20130277204 | VAPOUR DEPOSITION - A method, comprising: generating a vapour of a material from a source of said material comprising a plurality of separate solid pieces of said material supported on a surface of a base in a configuration in which said plurality of solid pieces of said target material are arranged at two or more levels to cover the whole of said surface of said base whilst providing a gap between adjacent pieces at the same level; and depositing said material from said vapour onto a substrate. | 10-24-2013 |
20130265280 | FLEXIBLE TOUCH SCREEN DISPLAY - A touch sensitive active matrix display device is provided. The device includes a display fabricated on a first flexible substrate, said display having a viewing surface. The device further includes a touch sensitive sensor including a second flexible substrate, under said display. The touch sensor is operated by touching said viewing surface of said display, and said combined display and touch sensitive sensor is flexible. | 10-10-2013 |
20130260058 | ELECTRONIC DEVICES - A method for forming an electronic device having a multilayer structure, comprising: embossing a surface of a substrate so as to depress first and second regions of the substrate relative to at least a third region of the substrate; depositing conductive or semiconductive material from solution onto the first and second regions of the substrate so as to form a first electrode on the first region and a second electrode on the second region, wherein the electrodes are electrically insulated from each other by the third region. | 10-03-2013 |
20130255873 | PROCESSING SUBSTRATES USING A TEMPORARY CARRIER - A technique comprising: securing a device substrate ( | 10-03-2013 |
20130235363 | DEVICE-SPECIFIC MARKINGS - Producing a plurality of electronic devices by a technique including photolithographically patterning a layer of conductive material ( | 09-12-2013 |
20130201146 | TOUCH-SENSING SYSTEMS - A method of projected capacitance touch sensing on a display screen, the method comprising: updating said display screen by applying a drive waveform to each pixel of the display screen over a plurality of frame periods, wherein a said drive waveform for a pixel defines a transition of the pixel from a current pixel state to an updated pixel state over said plurality of frame periods, and wherein said updating comprises selecting each row of said display screen in turn for a row driving period and driving columns of the display screen with a time slice of drive waveforms for pixels of the row to perform a frame update of said display screen, and repeating said frame update to drive pixels of said display with a plurality of successive time slices of said drive waveforms to drive said pixels with said drive waveforms; sensing a signal from a projected capacitance touch sensing electrode of said display screen during a sensing interval, and using said sensing to provide a touch sensing response; identifying when column drive levels of said drive waveforms for pixels of one selected row change by more than a threshold level between said one selected row and a next selected row to provide a column drive row change signal; and inhibiting said touch sensing responsive to said column drive row change signal indicating a greater than said threshold level change of said column drive levels from said one selected row to said next selected row during said sensing interval. | 08-08-2013 |
20130169605 | DISPLAY CONTROL MODE - A method updates an image displayed on an electronic display. The image can include a first region having multiple lines and a second region also having multiple lines. The method includes driving the pixels of the first and second regions according to one or more frames. In a first frame, driving the pixels of the first and second regions is done by scanning the lines of the regions from a first end of the first region to a second end of the second region, the second end opposite the first end along a scanning direction. In a second frame, driving the pixels of the first and second regions is done by scanning the lines of the regions from the first end to the second end, and the scanning begins before the scanning according to the first frame reaches the second end. | 07-04-2013 |
20130157443 | PRODUCTION OF ELECTRONIC SWITCHING DEVICES - A technique of producing one or more electronic switching devices, each switching device comprising a semiconductor channel between two electrodes, and a dielectric element separating said semiconductor channel from a switching electrode, the method comprising: depositing onto a substrate a layer of material for at least partly forming said semiconductor channel or said dielectric element of said one or more switching devices by transferring said material onto said substrate from a rotating first roller. | 06-20-2013 |
20130153869 | CONDUCTIVE ELEMENTS IN ORGANIC ELECTRONIC DEVICES - A technique comprising: forming a conductive element of an electronic device on a portion of the surface of a first organic layer, applying a second organic layer over said conductive element and said first organic layer, and then treating at least one of the first and second organic layers to increase the strength of adhesion between said first and second organic layers. Thereby the retention of said conductive element on said first organic layer is improved. | 06-20-2013 |
20130143416 | LASER ABLATION WITH EXTRACTION OF THE ABLATED MATERIAL - A technique comprising: using a laser beam to ablate a target surface ( | 06-06-2013 |
20130143362 | ORGANIC ELECTRONIC DEVICES - A technique comprising: mounting a device substrate on a processing support, forming one or more electronic elements on the device substrate with the device substrate thus mounted on the processing support; wherein the device substrate comprises an organic support structure, and provides primary protection for the overlying electronic elements against the ingress of a degrading species from a side of the device substrate opposite to the one or more electronic elements. | 06-06-2013 |
20130141120 | DETERMINING LAYER THICKNESS - A technique comprising: producing a plurality of devices according to a common production process; and determining the thickness of a layer of one of said plurality of devices using an indicator of a first electrical property dependent on the area of overlap between a first element of the device and a second element of the device partially underlying said first element via said layer, wherein the method further comprises: additionally using an indicator of a second electrical property dependent on the area of overlap between said first element of the device and a third element of the device also partially underlying said first element via said layer, wherein (a) the difference between (i) a measured indicator of said first electrical property, and (ii) a measured indicator of said second electrical property provides a more reliable indicator of the thickness of said layer than (b) an indicator of said first electrical property. | 06-06-2013 |
20130137333 | ASSEMBLING A DISPLAY DEVICE - A technique comprising: assembling together a front plane ( | 05-30-2013 |
20130136852 | EDGE DETECTION - A technique comprising: forming a plurality of smaller substrates from one or more larger substrates by a reduction process according to which there is some possible variation size between the smaller substrates within a variation range; and, in advance of said reduction process, providing said one or more larger substrates with one or more detection marks whose size and location are selected such that after the reduction process each smaller substrate includes a portion of at least one of said one or more detection marks, said portion having one or more edges that coincide with at least a part of one or more edges of the smaller substrate whatever actual size the smaller substrate has within said variation range. | 05-30-2013 |
20130135279 | TUNING DISPLAY DEVICES - A technique comprising: determining a correction to a drive voltage for the front plane common electrode of a first display device according to the result of one or more measurements of an optical property for the first display device and the result of one or more measurements of said optical property for one or more other devices including an optical medium having the same optical response as the first display device. | 05-30-2013 |
20130134126 | REDUCING DEFECTS IN ELECTRONIC APPARATUS - A technique, comprising defining at least part of one or more electronic devices on a substrate sheet by means of one or more material removal processes, wherein the substrate sheet is arranged on a lower layer so as to overhang said lower layer more at a first end than it does at an opposite, second end; and removing loose material from under said overhang at said first end by means of a stream of gas directed at said substrate and said lower layer from an outlet, said stream of gas having at said outlet at least a directional component parallel to a direction from said second end to said first end. | 05-30-2013 |
20130110421 | DEVICE ANALYSIS | 05-02-2013 |
20130040657 | ELECTRONIC DOCUMENT READING DEVICES - We describe an electronic document reading device comprising: a wireless remote content connection; a physical user interface for receiving device control commands from a user; non-volatile data storage; a non-volatile electrophoretic display screen; and a device controller. The controller has program code to: read an item of electronic document content from said non-volatile data store; wherein the item of electronic document content includes: i) electronic document content display data, ii) a location based permission control object configured to define allowed location-based display of the content display data on the electrophoretic display; determine a physical location of the reading device; and operate with the permission control object to determine whether display of the content display data is permitted at the physical location, wherein operating with the permission control object enables the item of electronic document content to control whether its own content is displayed on the non-volatile electrophoretic display screen. | 02-14-2013 |
20130027458 | DISTORTION COMPENSATION FOR PRINTING - A printing machine includes a substrate and at least one printhead with at least two material deposition channels which are movable with respect to the substrate, wherein the printhead is mounted on a stage which allows rotation of the printhead around an axis perpendicular to the substrate and translation in a direction perpendicular to the print direction, and wherein during each print swath, the rotation angle and translation values of the printhead are varied in order to change the pitch and the lateral position in the direction perpendicular to the print direction of material deposited from the different deposition channels; and an algorithm which computes the required rotation angles and translation values for a given pattern of substrate distortion. | 01-31-2013 |
20120280969 | DISPLAY SYSTEMS - We describe circuits and methods for compensating for gate kickback in electro-optic displays, in particular electrophoretic displays. In embodiments the method comprises compensating gate kickback comprising a change in voltage between a pixel electrode and a common electrode of the display arising from capacitive coupling between a gate drive line and the pixel electrode by offsetting a value of a common voltage on the common electrode by an offset value dependent on a difference between a magnitude of said positive gate voltage and a magnitude of said negative gate voltage. | 11-08-2012 |
20120193721 | ELECTRONIC DEVICES - Forming, between a supporting substrate and the bottom conductive layer of a stack of layers a plurality of electronically functional elements, a non-conducting layer that functions to increase the adhesion of said bottom conductive layer to the supporting substrate. | 08-02-2012 |
20120193655 | ALIGNMENT TOLERANT PATTERNING ON FLEXIBLE SUBSTRATES - A method is provided for fabricating a multilayer electronic device on a flexible substrate including at least a first and a second patterned layer, wherein the first patterned layer is defined with a linewidth that is smaller than the linewidth of the second patterned layer, and the second patterned layer is defined by a patterning technique which is capable of correcting for local distortions of the pattern of said first layer on top of the flexible substrate and wherein the first patterned layer is laid-out in such a way that the geometric overlap between a portion of the second layer and a portion of the first layer is insensitive against small variations of the position of the second patterned layer. | 08-02-2012 |
20110207300 | ELECTRONIC DEVICES - A method for forming an electronic device having a multilayer structure, comprising: embossing a surface of a substrate so as to depress first and second regions of the substrate relative to at least a third region of the substrate; depositing conductive or semiconductive material from solution onto the first and second regions of the substrate so as to form a first electrode on the first region and a second electrode on the second region, wherein the electrodes are electrically insulated from each other by the third region. | 08-25-2011 |
20110101361 | OFF-SET TOP PIXEL ELECTRODE CONFIGURATION - A semiconductor device architecture where the top pixel electrode is deposited in an off-set configuration, such as to overlap the COM electrode, and also the gate electrode of the neighboring device. Such a configuration allows for improved device performance, resulting from features such as a greater storage capacitance. | 05-05-2011 |
20110095999 | ELECTRONIC DOCUMENT READING DEVICES - 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. | 04-28-2011 |
20100295812 | FLEXIBLE TOUCH SCREEN DISPLAY - A touch sensitive active matrix display device is provided. The device includes a display fabricated on a first flexible substrate, said display having a viewing surface. The device further includes a touch sensitive sensor including a second flexible substrate, under said display. The touch sensor is operated by touching said viewing surface of said display, and said combined display and touch sensitive sensor is flexible. | 11-25-2010 |
20100155708 | REDUCING DEFECTS IN ELECTRONIC SWITCHING DEVICES - A technique for isolating electrodes on different layers of a multilayer electronic device across an array containing more than 100000 devices on a plastic substrate. The technique comprises depositing a bilayer of a first dielectric layer ( | 06-24-2010 |
20100127992 | MULTI-TOUCH ACTIVE DISPLAY KEYBOARD - The present invention relates to flexible resistive touch screen components. In particular, to a flexible resistive touch screen component that incorporates flexible resistive touch screen technology beneath a flexible display. The present invention provides a touch sensitive display device comprising 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 comprising 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. | 05-27-2010 |
20100090221 | DISTORTION TOLERANT PROCESSING - A method of manufacturing an integrated circuit (IC) for driving a flexible display includes depositing a pattern of spatially non-repetitive features in a first layer on a flexible substrate, said pattern of spatially non-repetitive features not substantially regularly repeating in both of two orthogonal directions (x,y) in the plane of the substrate; depositing a pattern of spatially repetitive features in a second layer on said first layer; aligning said second layer and said first layer so as to allow electrical coupling between said non-repetitive features and said repetitive features, wherein distortion compensation is applied during deposition of said repetitive features to enable said alignment. | 04-15-2010 |
20100060563 | ELECTRONIC DOCUMENT READER - We describe an electronic document reading device having a front, display surface and a device rear surface, the device including a connector mounted on an edge of the device. The device includes a back panel having an exterior surface to provide the rear surface and an interior surface, wherein the back panel is substantially transparent and the interior surface of the back panel is substantially opaque, and wherein the back panel has a cut-out for the connector such that a rear surface of the connector is substantially flush with the device rear surface provided by the exterior of the transparent back panel, such that the opaque interior surface of the transparent back panel gives the impression of a device thinner than a physical thickness of the device defined by the substantially flush connector rear surface and the device rear surface. | 03-11-2010 |
20100018956 | ELIMINATION OF SHORT CIRCUITS BETWEEN CONDUCTORS BY LASER ABLATION - A method of selectively eliminating electrical shorts and other electrical defects from specific layers of a multilayer electronic device without damaging underlying layers. The method is based on a combination of an automated detection of the defects and selective laser ablation patterning (SLAP). | 01-28-2010 |
20100001307 | ENCAPSULATION FOR ELECTRONIC AND/OR OPTOELECTRONIC DEVICE - A method of processing a flexible encapsulation scheme to encapsulate a flexible device, such as a display device in order to provide structural support for the display module. An upper transparent encapsulation layer covers and protects the media and active area of the device. A lower encapsulation layer is deposited over the under side of the display to complete the encapsulation and the two protective encapsulation layers are sealed. A driver housing may be positioned at the opposite end of the device to the overlap region of the encapsulation layers in order to protect the driver electronics. | 01-07-2010 |
20090298299 | LASER ABLATION OF ELECTRONIC DEVICES - The present invention relates to methods of fabricating electronic devices using laser ablation and to devices fabricated thereby. Embodiments of the methods are particularly suitable for defining electrodes within thin film transistor (TFT) structures using laser ablation in a step-and-repeat mode. A method of fabricating an electronic device, the device comprising a plurality of layers on a substrate, the layers including an upper conductive layer and at least said conductive layer and said substrate, the method comprising: 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; wherein said successively applied laser patterns overlap one another in an overlap region; and wherein said method further comprises 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. | 12-03-2009 |
20090232969 | ELECTRONIC DEVICES - A method of producing an electronic device including the steps of: (i) providing a body including a first, conductive element separated from a first surface of said body by a portion of said body; (ii) removing a selected portion of said body to define a recess in said body extending from said first surface and via which a portion of said first element is exposed; and (iii) putting into said recess a liquid medium carrying a first material; wherein said first material is preferentially deposited on the exposed inner surface of said body defining said recess, and wherein the deposited first material is used to provide a connection between said first element and a second conductive element located within said body or later deposited over said first surface of said body. | 09-17-2009 |
20090113291 | Electronic Document Reader - We describe a method of displaying a document page with a predetermined size using a display device having edges defining lateral dimensions not substantially larger than said predetermined size and having a central re-writable display portion and a non-re-writable border, said document page comprising a central, foreground portion bearing one or both of text and graphics, a background having a background colour and at least one margin having said background colour, the method comprising: inputting page data defining a page for display; processing said page data to crop margins of said page such that, when displayed on said re-writable display portion, said non-re-writable border gives the appearance of said cropped margins, said processing generating cropped page data; and outputting said cropped page data for display on said re-writable display portion of said display. | 04-30-2009 |
20090109185 | Electronic Document Reader - We describe a display device for displaying an electronic document page comprising a central rewritable portion, a non-rewritable border with external lateral physical dimensions defined by the display edges, wherein said border is coloured to substantially match a background colour of said central rewritable portion such that when a foreground part of said document page is displayed on said central rewritable portion the appearance of margins of said document page is provided by said background coloured border whereby in use said displayed electronic document page appears to extend up to said display edges, and wherein the surface of the display is substantially flat over the lateral physical dimensions from the central rewritable portion across the border to the display edges. | 04-30-2009 |
20090009812 | Distortion Compensation for Printing - A printing machine includes a substrate and at least one printhead with at least two material deposition channels which are movable with respect to the substrate, wherein the printhead is mounted on a stage which allows rotation of the printhead around an axis perpendicular to the substrate and translation in a direction perpendicular to the print direction, and wherein during each print swath, the rotation angle and translation values of the printhead are varied in order to change the pitch and the lateral position in the direction perpendicular to the print direction of material deposited from the different deposition channels; and an algorithm which computes the required rotation angles and translation values for a given pattern of substrate distortion. | 01-08-2009 |
20080252210 | Electrode Patterning - A method is provided to isolated conductive pads on top of a multi-layer polymer device structure. The method utilizes laser radiation to ablate conductive material and create a non-conductive path, electrically isolating the conductive pads. The process is self-limiting and incorporates at least one layer within the stack that absorbs the radiation at the required wavelength. The prevention of radiation degradation of the underlying layers is achieved, as absorption of radiation occurs primarily on the surface of the structure, but not in any of the radiation sensitive underlying layers of the electronic device. The method preferably uses low energy infrared radiation which has been shown to produce little debris and no device degradation. | 10-16-2008 |