Patents Assigned to Display Technologies
  • Light-emitting devices
    Patent number: 6801000
    Abstract: A light-emitting device comprising: a first electroluminescent element for emitting light of a first colour when energised; and a second electroluminescent element for emitting light of a second colour when energised, the first electroluminescent element having an active lifetime which is greater than that of the second electroluminescent element; characterised in that the second element is configured to operate at a lower brightness than the first element.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: October 5, 2004
    Assignee: Cambridge Display Technology Ltd.
    Inventors: Jan Jongman, John Altrip, David Lacey
  • Method of producing an organic light-emissive device
    Patent number: 6800498
    Abstract: A method of producing an organic light-emitting device comprising a patterned electroluminescent polymer layer arranged between two electrodes such that charge carriers can move between the first and second electrodes an the electroluminescent polymer layer, the method comprising the steps of (a) providing a substrate comprising the first electrode, (b) depositing solid particles comprising the electroluminescent polymer onto selected portions of the surface of the substrate, and (c) securing to the substrate those solid particles comprising electroluminescent polymer particles deposited onto the substrate in step (b) to form the patterned electroluminescent polymer; and (d) forming the second electrode over the surface of the electroluminescent.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: October 5, 2004
    Assignee: Cambridge Display Technology Limited
    Inventors: Christopher John Bright, Timothy Butler
  • Method of driving a liquid crystal display panel and liquid crystal display device
    Publication number: 20040189586
    Abstract: A method of driving a liquid crystal display panel of the type of active matrix which effects the pre-scanning and the main scanning. An improved writing efficiency is obtained by fully utilizing the effect of pre-writing to offer superior display characteristics without increasing the process load or the cost, and a liquid crystal display device. The polarity of a data signal is inverted for every horizontal scanning period. A pre-scanning period B is set five scanning periods to four scanning periods before the main scanning period A which is for writing a predetermined pixel voltage into the pixels. In the main scanning, the gate signal is raised simultaneously with the data signal and is broken down before the polarity of the data signal is inverted.
    Type: Application
    Filed: March 23, 2004
    Publication date: September 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventor: Yoji Nagase
  • Display device and method for fabricating the same
    Publication number: 20040189213
    Abstract: The display device comprises: a substrate 50 having a plurality of light emitting elements on one surface thereof, and a substrate 10 having a circuit for controlling the plurality of the light emitting elements, bonded to said one surface of the substrate 50, and sealing a space where the plurality of the light emitting elements are formed. This makes it possible to form the light emitting elements on a flat surface, and the degradation of the emission characteristics of the light emitting elements can be prevented. The aperture ratio and the luminance of the display device can be also increased.
    Type: Application
    Filed: March 23, 2004
    Publication date: September 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Susumu Okazaki, Takuya Watanabe, Atuyuki Hoshino
  • Liquid crystal display apparatus
    Publication number: 20040189891
    Abstract: A liquid crystal display apparatus includes a liquid crystal panel having front and rear surfaces, a printed circuit board for driving the liquid crystal panel, and an optical waveguide for illuminating the front surface of the liquid crystal panel, the optical waveguide including first and second planes, and a thick side and a thin side, wherein the second plane is inclined with respect to the first plane, wherein the liquid crystal panel is inclined with respect to the first plane of the optical waveguide, wherein the second plane of the optical waveguide faces the liquid crystal panel, wherein a space portion having a size based on the difference between the thickness of the thick side and the thin side is situated at the thin side of the optical waveguide, and wherein at least a portion of the printed circuit board is disposed in the space portion.
    Type: Application
    Filed: March 31, 2004
    Publication date: September 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Seiji Hayashimoto, Koshu Yonemura
  • Liquid crystal display device
    Publication number: 20040189925
    Abstract: A liquid crystal display device has been disclosed. The liquid crystal display device provides a display with a high reflectance (high transmittance) and a high color purity while maintaining white balance and adjusts the white balance by changing the occupied area instead of the transmission characteristics of a CF in order to prevent yellowing of the display due to a low-temperature light source.
    Type: Application
    Filed: March 17, 2004
    Publication date: September 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Katsufumi Ohmuro, Norio Sugiura
  • Liquid crystal display device with reinforced side
    Publication number: 20040189889
    Abstract: The liquid crystal display device has a liquid crystal panel, a light guiding plate for illuminating the liquid crystal panel, a bezel covering a periphery of the liquid crystal panel, a frame on which the liquid crystal panel is mounted, a screw for securing a side wall of the bezel to the frame, and a rear cover having a portion which extends from a back side of the light guiding plate beyond the position of the screw and which has a hole through which the screw passes. A portion of the side surface fixing mechanism in the vicinity of the fixing screw is reinforced by the portion of the rear cover which is coupled with the side wall of the bezel and the side wall of the frame.
    Type: Application
    Filed: March 19, 2004
    Publication date: September 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Eiji Nitto, Hirofumi Miyamoto
  • Liquid crystal panel
    Publication number: 20040191428
    Abstract: A liquid crystal panel is provided that has a liquid crystal layer sandwiched between a pair of substrates, wherein the liquid crystal layer comprises a liquid crystal and a cross-linked resin, the cross-linked resin comprises a cross-linked structural part adhered to a liquid crystal layer contacting surface and a terminal part rising from the liquid crystal layer contacting surface, and at least one of three conditions: the outer surface of at least one substrate is curved; a liquid crystal layer contacting surface is curved; and the thickness of one of the substrates is not more than ½ of the thickness of the other substrate, is satisfied. It is possible to obtain a liquid crystal panel having increased freedom in the appearance, device weight reduction, simplified structure, etc. by improving the outer and/or inner surfaces of the device.
    Type: Application
    Filed: March 19, 2004
    Publication date: September 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Hideaki Tsuda, Seiji Tanuma, Yoshio Koike
  • In-plane switching liquid crystal display device
    Publication number: 20040189924
    Abstract: A liquid crystal display device includes a liquid crystal layer confined between first and second substrates, an electrode formed on the first substrate so as to create an electric field acting generally parallel to a plane of the liquid crystal layer, and a plurality of pixels being defined in the liquid crystal layer, wherein each of the pixels includes therein a plurality of domains having respective orientations for liquid crystal molecules, such that the orientation is different between a domain and another domain within the plane of the liquid crystal layer.
    Type: Application
    Filed: April 8, 2004
    Publication date: September 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Yohei Nakanishi, Seiji Tanuma, Takatoshi Mayama
  • Thin film transistor substrate and manufacturing method thereof
    Publication number: 20040188683
    Abstract: A thin film transistor substrate includes a transparent insulating substrate, a first thin film transistor that is formed on the transparent insulating substrate, and a second thin film transistor that is formed on the transparent insulating substrate. The second thin film transistor has a characteristic that differs from that of the first thin film transistor. An active layer of the first thin film transistor has a thickness greater than or equal to 50 nm, and an average crystal grain diameter greater than or equal to 1 &mgr;m. An active layer of the second thin film transistor has a thickness less than or equal to 60 nm, and an average crystal grain diameter less than 1 &mgr;m. The thin film transistor substrate is formed by conducting poly-crystallization through CW laser irradiation while controlling off time leak current generation and pressure resistance degradation.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventor: Kazushige Hotta
  • Liquid crystal display and method of manufacturing the same
    Publication number: 20040188653
    Abstract: The invention relates to a liquid crystal display utilizing a vertically aligned state of liquid crystal molecules when no voltage is applied and to a method of manufacturing the same. The invention is aimed at providing a liquid crystal display and a method of manufacturing the same in which the existing step for forming vertical alignment films can be omitted to achieve a cost reduction.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Shingo Kataoka, Hideaki Tsuda, Katsufumi Ohmuro, Jin Hirosawa, Seiji Tanuma, Yoshio Koike
  • Liquid crystal display device
    Publication number: 20040189629
    Abstract: When an input power supply fed to a liquid crystal display device is cut off, a gate-on power supply for driving a gate line of a display part is automatically changed from a first power supply that reduces luminance inclination unevenness in the display part to a second power supply that causes residual charges in liquid crystal to be discharged. Consequently, at a normal driving time, a good quality display image with reduced unevenness in luminance inclination can be obtained, and at a power-off time, the display due to the residual charges of the liquid crystal is cleared so that an afterimage can be prevented from being visible.
    Type: Application
    Filed: March 24, 2004
    Publication date: September 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventor: Syouichi Fukutoku
  • Opto-electrical devices
    Publication number: 20040189189
    Abstract: An opto-electrical device comprising an anode electrode, a cathode electrode, and an opto-electrically active region located between the electrodes, the cathode electrode including a first layer comprising a compound of a group 1 metal, group 2 metal, or a transition metal, a second layer comprising a material having a work function below 3.5 eV, and a third layer spaced from the opto-electrically active region by the first and second layers and having a work function above 3.5 eV.
    Type: Application
    Filed: March 15, 2004
    Publication date: September 30, 2004
    Applicant: Cambridge Display Technology Ltd.
    Inventors: Jeremy H. Burroughes, Julian C. Carter, Alec G. Gunner, Stephen K. Heeks, Ian S. Millard
  • Thin film transistor substrate and its manufacture
    Publication number: 20040191972
    Abstract: A semiconductor layer with a threshold voltage for n-channel is formed and patterned to TFT island areas. A gate insulating film is deposited. The first gate electrode layer is formed and pattered to form an opening. Phosphorous ions are implanted into a p-channel TFT in the opening to set threshold voltage for p-channel TFT. A second gate electrode layer is formed and patterned to form second gate electrodes. By using the first gate electrode layer as a mask, boron ions are implanted at a high concentration to form source/drain regions of the p-channel TFT. By using the second gate electrodes as a mask, the first gate electrode layer is etched to form gate electrodes. Phosphorous ions are implanted at a low concentration to form LDD regions. By using a fourth mask, P ions are implanted at a high concentration to form source/drain regions of n-channel TFTs.
    Type: Application
    Filed: January 27, 2004
    Publication date: September 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventor: Kazushige Hotta
  • Liquid crystal display device
    Publication number: 20040189580
    Abstract: At least one of an output corresponding to a maximum tone and an output corresponding to a minimum tone in a data driver of a liquid crystal display device is used only for image data that has undergone data correction for improving response speed of liquid crystal, and consequently, data correction for improving response speed can be made in all areas.
    Type: Application
    Filed: March 24, 2004
    Publication date: September 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Katsuyoshi Hiraki, Tetsuya Kobayashi
  • Display device
    Publication number: 20040189566
    Abstract: A display device, comprising: a pixel array unit having display elements formed in vicinity of intersections of signal lines and scanning lines arranged in length and breadth, image pickup units and an output unit which outputs binary data corresponding to image picked up by said image pickup unit; a image pickup device provided separate from said image pickup unit; a first image processing unit configured to generate multiple gradation data based on multiple binary data picked up by said image pickup units based on multiple image pickup conditions; and a second image processing unit configured to receive either the image pickup data picked up by said image pickup device or the multiple gradation data generated by said first image processing unit, to conduct a prescribed image processing.
    Type: Application
    Filed: March 31, 2004
    Publication date: September 30, 2004
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takashi Nakamura, Hirotaka Hayashi
  • Method and apparatus for fabricating liquid crystal display device using an electrostatic chuck
    Patent number: 6798488
    Abstract: A liquid crystal display device has a liquid crystal inserted between first and second substrates and surrounded by a peripheral seal. The liquid crystal is dripped onto the first substrate in an area defined by the seal of the first substrate. The first substrate and the second substrate are joined or bonded together under pressure in a vacuum chamber. The chamber is then exposed to the atmosphere while keeping the first substrate and the second substrate under pressure. The pressure is then released and thereafter light is irradiated onto the peripheral seal. The vacuum chamber includes upper and lower surface plates to support the substrates. The surface plate includes an electrostatic chuck and a vacuum attraction passage provided in the chuck.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: September 28, 2004
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Satoshi Murata, Hiroyuki Sugimura, Norimichi Nakayama
  • Liquid crystal display apparatus
    Publication number: 20040183985
    Abstract: A liquid crystal display apparatus that can detect a signal in an input signal wire and perform tests by measuring the resistance of the wire even without any signal input substrate is disclosed. The liquid crystal display apparatus includes an almost quadrilateral liquid crystal panel having a liquid crystal display part and a plurality of first drive IC substrates. The first drive IC substrates are aligned along an edge of the liquid crystal panel and connected to the liquid crystal panel. Each first drive IC substrate has a first drive IC and further includes a through wire to connect between distinct terminals of a plurality of terminals aligned along an edge thereof, and a test pad is formed on a portion of the through wire.
    Type: Application
    Filed: March 16, 2004
    Publication date: September 23, 2004
    Applicant: Fujitsu Display Technologies Corporation
    Inventor: Yoshihisa Taguchi
  • Dispenser for discharging liquid material
    Publication number: 20040182887
    Abstract: A dispenser has a syringe having a nozzle at one end thereof and a plunger fitted in the syringe from the other end of the syringe. One end of a pipe is connected to a portion of the syringe between the one end and the other end of the syringe. A liquid material tank is connected to the other end of the pipe. The liquid material tank is arranged so that a level of the liquid material in the liquid material tank is higher than in the syringe. The dispenser can be used for drip injection method for producing a liquid crystal display device to stably drip droplets of a liquid crystal onto a substrate of a liquid crystal display device.
    Type: Application
    Filed: March 18, 2004
    Publication date: September 23, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Hiroyuki Sugimura, Satoshi Murata, Tetsuya Kida, Shota Makimoto
  • Liquid crystal display having aluminum wiring
    Publication number: 20040183763
    Abstract: A method of manufacturing a liquid crystal display, has the steps of: (a) heating a liquid crystal display substrate and forming a main wiring layer of Al or Al alloy thereon, in which grains are grown in the formed main wiring layer and the substrate is heated to such a temperature as the main wiring layer has an irregular surface having an average roughness Ra of 3 nm or larger, or (a1) forming a main wiring layer of Al or Al alloy on a liquid crystal display substrate and (a2) exposing the substrate to an atmosphere containing oxygen to naturally oxidize a surface of the main wiring layer; (b) forming a heat resistant cover metal layer on the main wiring layer to form a laminated metal layer; and (c) heating the substrate and forming an insulating film on the laminated metal layer by CVD.
    Type: Application
    Filed: January 27, 2004
    Publication date: September 23, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Akihiro Matsui, Katsunori Misaki