Patents Assigned to Display Technologies
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Patent number: 8427753Abstract: The invention relates to the use of a fluid mixture for electrowetting in a device that is suitable for this. According to the invention, the fluid mixture consists of at least two components, namely an electrically inducible liquid and an electrically inert fluid. These two components form a bi- or multiphasic mixture. The electrically inducible liquid responds to a change of an electric field that surrounds it or completely or partly permeates it, in such way that it changes its surface tension so that its form is changed too, particularly if only parts of its surface are permeated by the electric field, or if the field strength is distributed not homogenously. According to a particularly preferred embodiment, the electrically inducible liquid consists of propylene carbonate.Type: GrantFiled: April 17, 2008Date of Patent: April 23, 2013Assignee: Advanced Display Technology AGInventors: Frank Bartels, Dieter Jerosch
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Patent number: 8425272Abstract: A method of producing an encapsulated module of interconnected opto-electronic devices which comprises: forming a patterned anode layer; forming a layer of opto-electronically active material over the patterned anode layer; forming a patterned cathode layer over the layer of opto-electronically active material, to provide a device array of opto-electronically active cells on the substrate; selectively removing portions of the layer of opto-electronically active material so as to expose minor portions of the anodes; forming a patterned interconnect layer on an encapsulating sheet in a pattern to define an array of interconnect pads; and laminating the patterned encapsulating sheet over the array of opto-electronically active cells whereby the exposed anode portions are interconnected with the cathodes of adjacent cells by the interconnect pads and the interconnected cells are encapsulated by the encapsulating sheet.Type: GrantFiled: July 25, 2005Date of Patent: April 23, 2013Assignee: Cambridge Display Technology LimitedInventors: Jonathan J. Halls, Richard Wilson
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Patent number: 8427402Abstract: This invention generally relates to methods and apparatus for driving passive matrix displays, in particular OLED (Organic Light Emitting Diode) displays. A method of driving a passive matrix electroluminescent display, the display having a plurality of rows and columns of emissive elements addressed by respective row and column electrodes, the method comprising: addressing said row electrodes, one at a time; and driving a set of said column electrodes while addressing each said row electrode; wherein said column electrode driving comprises driving said column electrodes to determine ratios of column drive signals to one another for said set of column electrodes; and wherein the method further comprises controlling an overall drive for said set of column electrodes to control a drive to said emissive elements in each said addressed row.Type: GrantFiled: December 15, 2006Date of Patent: April 23, 2013Assignee: Cambridge Display Technology LimitedInventor: Euan Smith
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Patent number: 8427512Abstract: 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. A method of compensating an OLED display device for burn-in of pixels of the OLED display, the method comprising: measuring a first voltage drop across at least one test pixel of the display; measuring a second voltage drop across at least one other pixel of the display; determining, from said first and second voltages and a from value (V1) representing a drive voltage increase for a loss in efficiency of said display due to burn-in, an estimated reduction in efficiency of said display due to burn-in; and compensating a drive to said display using said estimated efficiency reduction.Type: GrantFiled: August 30, 2007Date of Patent: April 23, 2013Assignee: Cambridge Display Technology LimitedInventor: Euan Smith
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Publication number: 20130091905Abstract: An anti-theft device for use with a product includes a housing for receiving a portion of the product therein, a strap to secure the housing to the product, a locking assembly to deter removal of the anti-theft device, and a detachment portion to affect removal of the anti-theft device. An EAS sensor may also be provided. The locking assembly includes at least a first portion and at least a second portion that engage each other in a locked position to secure the housing to the product. The detachment portion enables a portion of the anti-theft device to be more readily severed in order to remove the anti-theft device from the product. In one embodiment, the strap is adjustable so that the length of the strap can be adjusted about a periphery of the product during application of the anti-theft device.Type: ApplicationFiled: October 17, 2011Publication date: April 18, 2013Applicant: DISPLAY TECHNOLOGIES, INC.Inventor: David W. Brown
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Publication number: 20130093989Abstract: Embodiments of the present invention disclose an array substrate, a liquid crystal panel and a display device. In the array substrate according to an embodiment of the present invention, each part of the pixel electrode constituting the pixel unit is contained within one structural unit, and slits of different parts of the pixel electrodes, which constitute different pixel units, within the structural unit have the same inclining direction, and therefore the transmissivity of the pixel unit can be increased.Type: ApplicationFiled: July 10, 2012Publication date: April 18, 2013Applicants: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xibin Shao, Yanping Liao, Liang Sun, Dan Wang
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Publication number: 20130093954Abstract: A display system includes a display device and a mobile device. The display device includes a signal receiving unit for receiving program signals, a processing unit operable to convert the program signals into program contents, and to encode one of the program contents into program packets, a first output unit operable to reproduce the program contents, and a first communication unit to transmit the program packets. The mobile device includes a second communication unit for receiving the program packets, a control unit operable to decode the program packets to recover the transmitted program content, and a second output unit to reproduce the transmitted program content.Type: ApplicationFiled: May 23, 2012Publication date: April 18, 2013Applicant: TPV Display Technology (Xiamen) Co., Ltd.Inventors: George KC CHANG, Yr. Hong
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Publication number: 20130088416Abstract: We describe a method of driving an OLED display. The OLED display comprises a plurality of pixel driver circuits on chiplets, each pixel driver circuit comprising an output transistor for driving a first connection of an associated OLED pixel. A cascode transistor on the chiplet is coupled between the output transistor and the first connection of said associated OLED pixel. A power supply is provided to the chiplet, defining a chiplet voltage range. A second connection of the associated OLED pixel is connected to an OLED voltage outside said chiplet voltage range. The OLED pixel is then driven using the pixel driver circuit on the chiplet over an OLED voltage range greater than said chiplet voltage range. In some preferred embodiments a drain connection of the cascode transistor is set at a voltage below a ground or negative (Vss) power supply to a chiplet.Type: ApplicationFiled: September 17, 2012Publication date: April 11, 2013Applicant: CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventors: Euan C. Smith, Aleksandra Rankov
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Patent number: 8415029Abstract: A monomer for use in manufacturing a conjugated polymer, the monomer having a structure as shown formula (2): Ar1, Ar2 and Ar3 are independently selected from optionally substituted aryl or heteroaryl, X1 and X3 both independently comprise a leaving group capable of participating in polymerisation and Z represents a direct bond or an optionally substituted bridging atom.Type: GrantFiled: December 23, 2005Date of Patent: April 9, 2013Assignees: Cambridge Display Technology Limited, CDT Oxford LimitedInventors: Mark Leadbeater, Sophie Heidenhain, Annette Steudel, Daniel Hicks
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Patent number: 8415875Abstract: An organic light emissive device comprising: a first electrode; a second electrode; and an organic light emissive region between the first and second electrodes comprising an organic light emissive material which has a peak emission wavelength, wherein at least one of the electrodes is transparent and comprises a composite of a charge injecting metal and another material which is codepositable with the charge injecting metal, the other material having a different refractive index to that of the charge injecting metal and wherein the other material has a lower degree of quenching at the peak emission wavelength than the charge injecting metal whereby quenching of excitons by the at least one electrode is reduced, the charge injecting metal comprising either a low work function metal having a work function of no more than 3.5 eV or a high work function metal having a work function of no less than 4.5 eV.Type: GrantFiled: September 22, 2011Date of Patent: April 9, 2013Assignee: Cambridge Display Technology LimitedInventors: Euan C. Smith, Matthew Roberts, William Young, Clare Foden
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Patent number: 8417081Abstract: An optocoupler including: a substrate comprising a photodetector; a transparent electrically-insulating layer disposed over the photodetector; and an organic electroluminescent device having an organic electroluminescent layer disposed between a first and a second electrode disposed over the transparent electrically-insulating layer; the photodetector arranged to detect light emitted from the organic electroluminescent device; wherein the optocoupler comprises a second current path between the first and second electrodes in addition to a first current path between the first and second electrode which in operation causes the organic electroluminescent layer to emit light.Type: GrantFiled: June 19, 2007Date of Patent: April 9, 2013Assignee: Cambridge Display Technology LimitedInventors: Julian Carter, Jonathan Halls
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Patent number: 8413826Abstract: A product display tray configured for use on a shelf is disclosed. The product display tray includes a base and at least one side wall. The base includes a front end, a back end, a left side, a right side, a lower surface and an upper surface for supporting items. The side wall is selectively positionable a distance from a side of the base and is substantially parallel to the side.Type: GrantFiled: May 29, 2012Date of Patent: April 9, 2013Assignee: Display TechnologiesInventors: Raymond M Schneider, Richard Jay, Eleanor Lovinsky
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Publication number: 20130082912Abstract: A pixel driver architecture for an active matrix OLED display, the pixel driver architecture comprising a voltage-programmed master pixel programming circuit, and a first plurality of current-programmed slave pixel driver circuits, each coupled to said master pixel programming circuit.Type: ApplicationFiled: September 12, 2012Publication date: April 4, 2013Applicant: CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventor: Euan C. Smith
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Patent number: 8410242Abstract: A pulsed driven display comprising an organic light-emitting device, said device comprising an organic layer comprising a semiconductive polymer, said polymer comprising a fluorene or triarylamine repeat unit, the fluorene or triarylamine repeat unit having a group R pendent from the polymer backbone, wherein R has general formula I: where Ar1 represents phenyl or a group comprising napthyl; Ar2 represents phenyl or a group comprising napthyl; R? represents a substituent group; R?=H or a substituent; n=0, 1, 2 or 3; m=0 or 1; and n?=1 or 2, with the proviso that m=0 if n=0.Type: GrantFiled: April 13, 2006Date of Patent: April 2, 2013Assignees: Cambridge Display Technology Limited, CDT Oxford LimitedInventors: Valerie Grand, Richard Wilson, Mark Dowling, Ilaria Grizzi, Mary J. McKiernan
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Patent number: 8410241Abstract: A process for the preparation of a polymerizable unit for production of a hole transporting polymer for use in an optical device, which process comprises reacting in the presence of S to form wherein each R is the same or different and is independently H or a substituent group; n is O or an integer from 1 to 100; Ar and Ar? are the same or different and are each aromatic or heteroaromatic groups which are substituted or unsubstituted; Y is a direct bond, a light emissive moiety, a hole transporting moiety or an electron transporting moiety; and X is a polymerizable group.Type: GrantFiled: December 23, 2005Date of Patent: April 2, 2013Assignee: Cambridge Display Technology LimitedInventor: Caroline Towns
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Publication number: 20130076983Abstract: A method of watching television programs, to be implemented using a television device and a remote control device that remotely controls the television device and that has an audio-video output module, includes: configuring first and second television tuners of the television device to receive the television program signals, respectively; and configuring the television device to receive an output television program command from the remote control device, and to select one of the television program signals for output to the remote control device and for subsequent reproduction by the audio-video output module of the remote control device.Type: ApplicationFiled: August 15, 2012Publication date: March 28, 2013Applicant: TPV Display Technology (Xiamen) Co., Ltd.Inventors: Yr. HONG, Zi-Jie Huang
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Patent number: 8405581Abstract: Embodiments relate 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.Type: GrantFiled: March 21, 2007Date of Patent: March 26, 2013Assignee: Cambridge Display Technology LimitedInventors: Euan Christopher Smith, Peter Mash, Adrian Cable
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Patent number: 8404361Abstract: A device comprising an electroluminescent copolymer comprising a light-emitting repeat unit in the polymer backbone and wherein the repeat unit is conjugatively separate from the polymer backbone.Type: GrantFiled: July 31, 2009Date of Patent: March 26, 2013Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Co., LimitedInventor: Annette Steudel
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Patent number: 8404159Abstract: A composition suitable for fabricating an electronic device such as an OLED using an ink-jet printing technique comprises a conducting or semi-conducting organic material and a solvent, the solvent having a boiling point of greater than 250° C. and a viscosity of less than 5 cPs. The composition preferably has a viscosity in the range between 0.1 and 20 cPs, and the solvent preferably has the formula: where R represents a C6 to C11 alkyl. The high boiling point of the solvent allows the “ink” to remain wet for a longer time after printing. This provides better process control during drying, resulting in more uniform films and greater control over the film profile. The low viscosity of the solvent enables jetting of the composition at high frequencies.Type: GrantFiled: February 24, 2009Date of Patent: March 26, 2013Assignee: Cambridge Display Technology LimitedInventors: Simon James Goddard, Paul Wallace
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Patent number: RE44164Abstract: 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.Type: GrantFiled: June 2, 2000Date of Patent: April 23, 2013Assignees: Seiko Epson Corporation, Cambridge Display Technology LtdInventors: Tatsuya Shimoda, Tomoko Koyama, Takeo Kaneko, Jeremy Henley Burroughes