Patents Assigned to Display Technologies
  • Patent number: 8189148
    Abstract: A transflective liquid crystal display device includes a liquid crystal display panel which is configured such that a liquid crystal layer is held between a pair of substrates, and to which an OCB mode is applied, and a pair of optical elements which are disposed on outsides of the liquid crystal layer, and optically compensate a retardation of the liquid crystal layer in a predetermined display state in which a voltage is applied to the liquid crystal layer, wherein the optical element is configured to include a circular polarization element including a polarizer and a first retardation plate which imparts a retardation of ¼ wavelength, and the first retardation plate has such wavelength dispersion characteristics as to establish a relationship, ?1<1, where ?1 is a ratio of an in-plane retardation Re430 at a wavelength of 430 nm to an in-plane retardation Re550 at a wavelength of 550 nm.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: May 29, 2012
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Emi Higano, Kazuhiro Nishiyama, Mitsutaka Okita, Shigesumi Araki
  • Patent number: 8188949
    Abstract: Display driver circuits are described for driving organic light emitting diode displays, particularly passive matrix displays with greater efficiency. Display driver control circuitry (506) comprises a frame memory interface (505) for reading data from a frame memory (504) for presentation on a passive matrix OLED display. A blank line identifier (507) identifies one or more substantially blank rows of pixels defined by the data in the frame memory and the control circuitry (506) skips past these rows when the passive matrix display is addressed. When blank lines are skipped the apparent brightness of the remaining lines increases and thus preferably the control circuitry includes a power controller (505) for reducing a power supply to the display in proportion to the number of skipped lines. The invention is particularly suited to a display driver providing a controlled current drive.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: May 29, 2012
    Assignee: Cambridge Display Technology Limited
    Inventors: Euan C. Smith, Paul R. Routley, William Goodchild
  • Patent number: 8186520
    Abstract: 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: Grant
    Filed: February 12, 2010
    Date of Patent: May 29, 2012
    Assignee: Display Technologies
    Inventors: Raymond M. Schneider, Richard Jay, Eleanor Lovinsky
  • Patent number: 8187669
    Abstract: Disclosed are compositions, useful in ink jet printing methods, that prevent clogging during dispensing, achieve stable dispensing, prevent precipitation of content matter during dispensing, and prevent phase separation during film formation. Also disclosed are uniform, homogenous, functional films formed using the compositions and manufacturing methods therefor, as well as organic EL devices and other such display devices and manufacturing methods therefor. The compositions contain a functional material and a solvent comprising at least one benzene derivative having one or more substituents, whereby the substituents have at least three carbon atoms in total.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: May 29, 2012
    Assignees: Seiko Epson Corporation, Cambridge Display Technology Limited
    Inventors: Sadao Kanbe, Shunichi Seki
  • Publication number: 20120126688
    Abstract: An organic electroluminescent device comprising: a substrate; a first electrode disposed over the substrate for injecting charge of a first polarity; a second electrode disposed over the first electrode for injecting charge of a second polarity opposite to said first polarity; an organic light emitting layer disposed between the first and the second electrode; and an encapsulant disposed over the second electrode, wherein the second electrode and the encapsulant are transparent to light emitted by the light emitting layer, wherein a cavity is provided between the encapsulant and the second electrode, and wherein an anti-reflective coating is provided on at least one side of the encapsulant for reducing reflection of light emitted by the light emitting layer so as to improve out-coupling of light from the device, said anti-reflective coating being transparent to light emitted by the light emitting layer.
    Type: Application
    Filed: May 24, 2006
    Publication date: May 24, 2012
    Applicant: Cambridge Display Technology Limited
    Inventors: Martin Richardson, Nalinkumar Patel, Russell Lees, Angela Lees, Matthew Roberts
  • Publication number: 20120120372
    Abstract: The invention provides a system and method that reduces the tediousness of the manual alignment process. Users select correspondences between projectors or components of a projector, to form a common coordinate. Using models of the display system, and projectors, the common coordinate system can be mapped quickly to the entire display. The process avoids a need to measure screen points, and allows the user to move significantly fewer points. Alternatively, the invention allows introduction of machine-vision style algorithms into manual calibration techniques to improve performance. This overcomes the tediousness of prior systems by introducing models of the display into the manual alignment process, allowing selection of a small number of points on each projector, and avoiding selection of precisely measured screen points. The system conversely finds correspondences between projectors, allowing mapping of the projectors into a common coordinate system, and quick warping of the coordinate system to the screen.
    Type: Application
    Filed: November 15, 2011
    Publication date: May 17, 2012
    Applicant: Scalable Display Technologies, Inc.
    Inventors: Samson J. Timoner, Tyler M. Johnson, Eugene Hsu, Rajeev J. Surati, Kevin Amaratunga
  • Patent number: 8173996
    Abstract: A semiconductive hole transport material containing polar substituent groups, the polar substituent groups substantially not affecting the electronic properties of the hole transport material and the hole transport material being soluble in a polar solvent.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: May 8, 2012
    Assignees: Cambridge Display Technology Limited, CDT Oxford Limited
    Inventors: Carl R. Towns, Caroline Towns, legal representative, Mary J. McKiernan, Annette Steudel
  • Publication number: 20120105935
    Abstract: The invention relates to an apparatus for displaying information by way of at least one fluid. For this purpose, the apparatus comprises at least one display element having two volumes, wherein the first volume is disposed between a transparent cover layer and a non-transparent intermediate layer and the second volume is disposed between the intermediate layer and a final layer such that only the content of the upper volume is visible. The display according to the invention further comprises at least one fluidic transition, by way of which the fluid can be transported between the two volumes. The apparatus according to the invention has an optimized space requirement, solves the problem of uneven saturation over the surface of a display element, and is additionally not sensitive to mechanical interference.
    Type: Application
    Filed: May 14, 2010
    Publication date: May 3, 2012
    Applicant: ADVANCED DISPLAY TECHNOLOGY AG
    Inventors: Andriy Bitman, Frank Bartels
  • Publication number: 20120095184
    Abstract: A monomer having the general formula: in which R1 is any substitution; R2 is any substitution; R1 and R2 may be linked to form a saturated or unsaturated ring; L represents a reactive leaving group; X and Y each independently represent CR2, O, BR, NR, SiR2, S, S?O, SO2, PR or P?O(R) wherein R in each occurrence is independently selected from H or a substituent; Z represents a single bond or a divalent atom or group, wherein X—Z—Y forms an unconjugated ring or chain, with the proviso that at least one of R1 and R2 is an aryl or heteroaryl group if Z is a single bond.
    Type: Application
    Filed: April 15, 2010
    Publication date: April 19, 2012
    Applicants: Sumitomo Chemical Company Limited, Cambridge Display Technology Limited
    Inventors: Mary McKiernan, Johathan Pillow
  • Publication number: 20120085994
    Abstract: An electroluminescent polymer comprising light-emissive repeat units and a non-emissive polycyclic aromatic hydrocarbon unit with greater than 12 aromatic sp2 hybridized carbon atoms, wherein the non-emissive polycyclic aromatic hydrocarbon unit comprises a structural unit having formula I:
    Type: Application
    Filed: April 15, 2010
    Publication date: April 12, 2012
    Applicant: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED
    Inventors: Jonathan Pillow, Ilaria Grizzi, Martin Humphries, Ian Warburton
  • Patent number: 8154557
    Abstract: According to an embodiment of the invention, even if a sample-and-hold circuit samples a signal from a signal processor to a display unit, an image quality reduction is hard to occur. According to an embodiment of the invention, there is provided a flat-panel display device includes a phase control circuit setting a state that a first parallel arrangement RGB pixel signal shifts by 120 degrees, a sample-and-hold circuit sampling a second parallel arrangement RGB pixel signal parallel-output from the phase control circuit to obtain a series arrangement RGB pixel signal, which is three times as much as a single pixel signal, and a driver supplying the series arrangement RGB pixel signal to the corresponding display pixel.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: April 10, 2012
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventor: Kimio Anai
  • Patent number: 8154703
    Abstract: A liquid crystal display panel includes an array substrate including a scanning line, a signal line crossing the scanning line, a switching element electrically connected to the scanning line and the signal line, and a pixel electrode formed on the scanning line, the signal line, and the switching element and electrically connected to the switching element, an opposite substrate including a common electrode with a through-hole and arranged opposite to the array substrate with a gap, a columnar spacer formed on either one of the array substrate and the opposite substrate and positioned away from the pixel electrode, the columnar spacer overlapping the through-hole and holding the gap between the array substrate and the opposite substrate, and a liquid crystal layer sandwiched between the array substrate and the opposite substrate.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: April 10, 2012
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Masumi Manabe, Jin Hirosawa, Masanori Imakawa
  • Patent number: 8144099
    Abstract: There is provided an liquid crystal display apparatus configured to invert a pixel voltage and a common voltage on a frame to frame basis while setting a transition voltage Vt in such a manner that the polarity of the pixel voltage to be applied to a pixel electrode of each display pixel and the polarity of the common voltage to be applied to a common electrode of a common substrate are differentiated.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: March 27, 2012
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Tetsuya Kojima, Tetsuo Fukami, Kazuhiro Nishiyama, Kenji Nakao
  • Publication number: 20120068140
    Abstract: A switchable electronic device comprises a hole blocking layer and a layer comprising a conductive material between first and second electrodes, wherein the conductivity of the device may be irreversibly switched upon application of a current having a current density of less than or equal to 100 A cm?2 to a conductivity at least 100 times lower than the conductivity of the device before switching. The conductive material is a doped organic material such as doped optionally substituted poly(ethylene dioxythiophene).
    Type: Application
    Filed: May 4, 2010
    Publication date: March 22, 2012
    Applicant: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED
    Inventors: Neil Greenham, Jianpu Wang
  • Publication number: 20120065338
    Abstract: An organic light emitting device having a phase-separated light-emissive layer comprising: a charge transport phase comprising a charge transport material; and an emitting phase, the emitting phase comprising a plurality of discrete emissive domains dispersed in the charge transport phase, each emitting domain comprising a host material and one or more metal complexes for emitting light by phosphorescence; wherein the charge transport material has a T1 energy level lower than the T1 energy level of the metal complexes and the host material has a T1 energy level higher than the T1 energy level of the metal complexes.
    Type: Application
    Filed: November 15, 2011
    Publication date: March 15, 2012
    Applicants: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, CDT OXFORD LIMITED
    Inventors: Carl Towns, Andrew Bruce Holmes, Stephen O'Connor
  • Publication number: 20120062530
    Abstract: A display control method includes the steps of: (A) converting a first data signal into a first image signal; (B) converting a second data signal into a second image signal; and (C) under control of a clock signal and according to arrangement of two kinds of polarizing films with orthogonal polarization directions on a display panel, outputting the first image signal to pixel units corresponding to which the display panel is provided with a first one of the two kinds of polarizing films and outputting the second image signal to the pixel units corresponding to which the display panel is provided with a second one of the two kinds of polarizing films, so as to generate an image frame on the display panel that corresponds to the first image signal and the second image signal.
    Type: Application
    Filed: September 14, 2011
    Publication date: March 15, 2012
    Applicant: TPV DISPLAY TECHNOLOGY (XIAMEN) CO., LTD.
    Inventor: Deling Xiao
  • Patent number: 8130187
    Abstract: A liquid crystal display comprises: a liquid crystal layer capable of bend orientation; a display screen on which an image is displayed by light transmitted through a bend-oriented liquid crystal layer; and liquid crystal voltage application means for applying a liquid crystal voltage to the liquid crystal layer according to luminance information for each field of image information composed of serial fields, the liquid crystal voltage being applied to cause transmittance of the light to change, thereby sequentially displaying the image corresponding to the fields of the image information, and when the luminance information changes between current and subsequent fields, the liquid crystal voltage application means applies the liquid crystal voltage which changes so as to have a value according to the luminance information by the time the liquid crystal voltage is applied for the subsequent field.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: March 6, 2012
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Kenji Nakao, Tsuyoshi Uemura, Seiji Kawaguchi, Junichi Kobayashi
  • Publication number: 20120053315
    Abstract: A monomer of formula (III): wherein X is a polymerisable group Ar, Ar1 and Ar2 each independently represent an optionally substituted aryl or heteroaryl group; R1 represents H or a substituent; and Z represents a direct bond or a divalent linking atom or group, wherein Ar1 and Ar2 are linked by a single bond or a divalent linking group selected from CR1R2, SiR1R2, PR1, NR1, O and S wherein R1 and R2 are independently selected from hydrogen; optionally substituted alkyl wherein one or more non-adjacent C atoms may be replaced with O, S, N, C?O and —COO—; alkoxy, aryl, arylalkyl, heteroaryl and heteroarylalkyl. Ar1 and Ar2 are preferably linked by an oxygen atom, and Ar1 and/or Ar2 may be fused to their respective adjacent Ar groups. Ar1 and its adjacent Ar group and/or Ar2 and its adjacent Ar group are optionally fused to form a fluorene unit.
    Type: Application
    Filed: April 15, 2010
    Publication date: March 1, 2012
    Applicants: Sumitomo Chemical Company Limited, Cambridge Display Technology Limited
    Inventors: Mary McKiernan, Thomas Pounds
  • Patent number: 8124248
    Abstract: A polymer blend comprising a first, light-emissive polymer comprising substituted or non-substituted units according to formulae (I) and (II) and a second, hole transport polymer comprising substituted or non-substituted fluorene units according to formula (I) and substituted or non-substituted triarylamine units, wherein the molecular weights of the first and second polymers and the blending ratio of the first and second polymers are selected such that, in use in a light-emissive device, the luminance of the emitted light at a bias of 5V is no less than 20,000 cd/m2. wherein R? is independently in each occurrence H, C1-C20 hydrocarbyl or C1-C20 hydrocarbyl containing one or more S, N, O, P or Si atoms, C4-C16 hydrocarbyl carbonyloxy, C4-C16 aryl(trialkylsiloxy) or both R? may form together with the 9-carbon on the fluorene ring a C5-C20 cycloaliphatic structure containing one or more heteroatoms of S, N or O.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: February 28, 2012
    Assignee: Cambridge Display Technology Limited
    Inventor: Salvatore Cina
  • Publication number: 20120046440
    Abstract: A method for forming a polymer comprising the polymerization of a plurality of monomers, wherein at least one of the plurality of monomers is one or both of: a charge transporting unit and a hydrocarbon monomer in which at least one carbon atom has been substituted by an atom or group with a greater quantity of unshared valence electrons than the carbon atom it has been substituted for, and wherein at least one of the plurality of monomers comprises an end-capping compound at one end of said monomer, the end-capping compound preventing polymerization at the end, wherein the end-capping compound is not charge transporting and comprises at least two rings. The end capping compound preferably consists of or includes a structural unit having the formula: (Ar)n—X, wherein Ar in each occurrence independently represents an aryl or heteroaryl group; X represents a leaving group comprising a boron derivative group or halogen; and n is 2 or more.
    Type: Application
    Filed: April 15, 2010
    Publication date: February 23, 2012
    Applicants: SUMITOMO CHEMICAL COMPANY LIMITED, CAMBRIDGE DISPLAY TECHNOLOGY LIMITED
    Inventors: Mary McKiernan, Thomas Pounds