Patents Assigned to Display Technologies
  • Liquid crystal drive apparatus and gradation display method
    Patent number: 7119775
    Abstract: A voltage with a predetermined pattern is applied to liquid crystals to drive the liquid crystals during a unit drive period of the liquid crystals and an application pattern according to the gradation data is set taking into account a value obtained by integrating the amount of transmitted light of liquid crystals at various points in time when each application pattern is applied to the liquid crystals. This allows a fine gradation display even if the liquid crystals are driven by only ON/OFF of a maximum rated voltage. As a result, it is possible to drive the liquid crystals at high speed and produce a multi-gradation display.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: October 10, 2006
    Assignees: Hunet Display Technology Inc., Yutaka Ozaki
    Inventor: Yutaka Ozaki
  • Optical device
    Publication number: 20060223208
    Abstract: The disclosure relates to a method of forming an optical device including the steps of (i) providing a substrate carrying a first electrode capable of injecting or accepting charge carriers of a first type; (ii) depositing a polyfluorene over the first electrode; and (iii) forming over the polyfluorene a second electrode capable of injecting or accepting charge carriers of a second type, wherein the polyfluorene is heated before and after forming the second electrode. The disclosure has particular application in the preparation of organic light emitting devices.
    Type: Application
    Filed: October 10, 2003
    Publication date: October 5, 2006
    Applicant: Cambridge Display Technology Limited
    Inventors: Nalinkumar Patel, Mark Leadbeater, Craig Murphy
  • Backlit displays
    Patent number: 7116308
    Abstract: A display device comprising: a light switching unit comprising an array of pixels each operable to vary the transmission of light therethrough; and a backlight comprising a first series of regions of organic light-emissive material having a first emission color and a second series of regions of organic light-emissive material having a second emission color, each region of organic material being located so as to lie behind a plurality of pixels of the array in the viewing direction for backlighting those pixels; and at least one of the regions of organic light-emissive material being formed by a process of ink-jet deposition.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: October 3, 2006
    Assignee: Cambridge Display Technology Limited
    Inventors: Stephen Karl Heeks, Julian Charles Carter
  • Liquid crystal display device
    Publication number: 20060208995
    Abstract: In order to facilitate connecting work of electrodes in a liquid crystal panel, a liquid crystal panel (2) includes: N pieces of electrodes connected to N pieces of electrodes in a first liquid crystal panel (1); NN (larger than N) pieces of signal lines connected to the N pieces of electrodes; and a signal line selecting circuit (22) which selects every N pieces from the NN pieces of signal lines in a time division manner, and connects the N pieces of signal lines to the N pieces of electrodes, in which N is equal to NN/n (where n is an integer of two or more). In such a way, as compared with the case of providing the electrodes for the signal lines of the second liquid crystal panel (2) correspondingly thereto, the number of electrodes can be reduced to 1/n.
    Type: Application
    Filed: November 15, 2005
    Publication date: September 21, 2006
    Applicant: TOSHIBA MATSUSHITA DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Akihiko Saitoh, Katsunori Ookochi, Hiroyuki Kimura
  • Polymers for use in optical devices
    Patent number: 7105621
    Abstract: Optical devices fabricated from solvent processible polymers suffer from susceptibility to solvents and morphological changes. A semiconductive polymer capable of luminescence in an optical device is provided. The polymer comprises a luminescent film-forming solvent processible polymer which contains cross-linking so as to increase its molar mass and to resist solvent dissolution, the cross-linking being such that the polymer retains semiconductive and luminescent properties.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: September 12, 2006
    Assignee: Cambridge Display Technology Ltd.
    Inventors: Andrew Bruce Holmes, Xiao-Chang Li, Stephen Carl Moratti, Kenneth Andrew Murray, Richard Henry Friend
  • Method of manufacturing liquid crystal display
    Patent number: 7102725
    Abstract: A substrate includes a valid area and a invalid area located outside the valid area, the valid area providing an array substrate, and a colored layers is formed in the valid area and the invalid area. A conductive film is formed on the colored layers in the valid area for forming a plurality of pixel electrodes, and the conductive film is simultaneously is formed on the colored layer in the invalid area. The substrate with the conductive film formed thereon is divided along the periphery of the valid area, thereby cutting the array substrate.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: September 5, 2006
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventor: Naomi Moriyama
  • Anisotropic conductive adhesive, electrode connection structure and method using the adhesive
    Publication number: 20060194425
    Abstract: Anisotropic conductive adhesive has conductive particles dispersed in adhesive and includes hard particles having conductivity, a resin layer that coats the hard particles and a conductive layer that coats the resin layer. A connection structure electrically connects electrodes to each other with the anisotropic conductive adhesive. A connection method includes the steps of causing the anisotropic conductive to intervene between electrodes, applying pressure to the anisotropic conductive adhesive and allowing the adhesive to be solidified.
    Type: Application
    Filed: January 23, 2006
    Publication date: August 31, 2006
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Daijiro Takano, Hikaru Fujita
  • Display device and information terminal device
    Publication number: 20060192766
    Abstract: A liquid crystal display apparatus according to the present invention includes a pixel array unit 1 having signal lines and scanning lines respectively arranged side by side, a signal line drive circuit 2 which drives the signal lines, a scanning line drive circuit 3 which drives the scanning lines, a signal processing output circuit 4 which serially outputs the picked-up image data supplied from the sensors, and a sync signal generation circuit 5. A black-white change obtained in the picked-up image data when a finger is brought close to or brought into contact with the pixel array unit 1 is detected, and the coordinate position of the finger is identified taking the ambient brightness into consideration. Regardless of whether the surroundings are bright or dark, therefore, the coordinate position can be detected with high precision.
    Type: Application
    Filed: March 29, 2004
    Publication date: August 31, 2006
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takashi Nakamura, Masahiro Yoshida, Hirotaka Hayashi, Miyuki Ishikawa, Yasuharu Tanaka
  • Liquid crystal display device
    Patent number: 7098975
    Abstract: In order to reduce an occurrence of a double image, to improve a contrast ratio in transmissive display, and to widen a viewing angle, a light diffusion layer for restricting the occurrence of the double image is placed between a viewing angle compensating plate and a reflective layer. With this configuration, though traveling directions of light emitted from a backlight placed on an outside of the reflective layer are changed in the light diffusion layer, the traveling directions are not changed in the viewing angle compensating plate and a liquid crystal layer once the light is made incident onto the viewing angle compensating plate, and the light travels straight in any of the vertical direction and slanting directions. Thus, the viewing angle compensating plate can exert an original function thereof to compensate a phase difference and can ensure a viewing angle widely.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: August 29, 2006
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventor: Yoshitaka Yamada
  • Bidirectional shift register shifting pulse in both forward and backward directions
    Patent number: 7098882
    Abstract: In forward direction pulse shift, by turning off a sixteenth transistor, a through-current is prevented from flowing between the fifth transistor and the seventh transistor. In backward direction pulse shift, by turning off the fifteenth transistor, a through-current is prevented from flowing between the fifth and sixth transistors. Thus, a potential variation in an output signal of a shift register between the forward direction pulse shift and the backward direction pulse shift is prevented.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: August 29, 2006
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Masakatsu Kitani, Tetsuo Morita
  • Electroluminescent devices with electrode protection
    Publication number: 20060186794
    Abstract: A method of manufacturing an electroluminescent device which has an anode and a cathode and arranged between the anode and the cathode a light emissive layer, also includes an anode protection layer which protects the anode against the effects of converting a precursor polymer to a semiconductive conjugated polymer which constitutes the light emissive layer. This has been found to increase the brightness and half-life of devices.
    Type: Application
    Filed: April 14, 2006
    Publication date: August 24, 2006
    Applicant: Cambridge Display Technology, Ltd.
    Inventors: Karl Pichler, Carl Towns
  • Semiconductor device, electronic circuit array substrate provided with the same and method of manufacturing the electronic circuit array substrate
    Patent number: 7095048
    Abstract: Dummy holes 36 are made for every one of display dot 5a, 5b and 5c at pixels 5 through interlayer film 33 up to gate electrode and scanning lines 11 before interlayer film 33 on glass substrate 3 is washed. When interlayer film 33 is washed, electric charges stored at semiconductor layer 21 are substantially the same in quantity as those stored at gate electrode and scanning lines 11 through dummy holes 36. Thus, electric potentials at gate electrode and scanning lines 11 are substantially equal in magnitude to those at semiconductor layer 21. This can suppress the occurrence of voltage differences imposed between gate electrode and scanning lines 11 and semiconductor layer 21.
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: August 22, 2006
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventor: Tetsuya Kawamura
  • Liquid-crystal display device and its manufacturing method
    Publication number: 20060181667
    Abstract: An LCD (liquid-crystal display) device comprising: first and second substrates; a liquid-crystal layer formed of a liquid crystal material and sandwiched as held between the substrates; spherical spacers arranged between the substrates; and recesses on surfaces contacting the liquid-crystal layer, of the substrates; and each of the spherical spacers being placed in respective one of the recesses. A manufacturing method of the LCD device comprising: forming recesses distributed on a main face of either of the first and second substrates; and preparing a plurality of spherical spacers on said recesses.
    Type: Application
    Filed: January 25, 2006
    Publication date: August 17, 2006
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takashi Doi, Daisuke Miyazaki
  • Optoelectronic devices
    Patent number: 7091516
    Abstract: An optoelectronic device comprising a photoresponsive region located between first and second electrodes such that charge carriers can move between the photoresponsive region and the first and second electrodes, the photoresponsive region comprising: a stack of alternate first and second layers, each first layer comprising a first photoresponsive material and each second layer comprising a second photoresponsive material, the first and second photoresponsive materials having different electron affinities; wherein each pair of second layers on opposite sides of a first layer contact each other via first holes defined by said first layer between said pair of second layers, and each pair of first layers on opposite sides of a second layer contact each other via second holes defined by said second layer between said pair of first layers.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: August 15, 2006
    Assignee: Cambridge Display Technology Limited
    Inventor: Jeremy H Burroughes
  • Liquid-crystal display device and surface-illuminant device
    Publication number: 20060176416
    Abstract: A liquid crystal display (LCD) device or a surface-illuminant devices employed therein comprising: a rectangular light-guide plate having a first main face as a light-emitting face, a second main face opposed to the first face and side faces disposed between the first and second faces; a light source disposed along at least one of said side faces; and a metal plate which covers said second face and a fringe of which extends along the light source, and contour of the metal plate being designed so as not to be overlapped with a driver circuit board which is to be placed along a back face of the light-guide plate.
    Type: Application
    Filed: January 13, 2006
    Publication date: August 10, 2006
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventor: Mitsutake Ikeda
  • Display device including function to input information from screen by light
    Publication number: 20060170658
    Abstract: In order to enhance accuracy of determination as to whether an object has contacted a screen and to enhance accuracy of calculation of a coordinate position of the object, edges of an imaged image are detected by an edge detection circuit 76, and by using the edges, it is determined by a contact determination circuit 77 whether or not the object has contacted the screen. Moreover, in order to appropriately control sensitivity of optical sensors in response to external light, by a calibration circuit 93, a drive condition of the optical sensors is changed based on output values of the optical sensors, which are varied in response to the external light.
    Type: Application
    Filed: December 15, 2005
    Publication date: August 3, 2006
    Applicant: TOSHIBA MATSUSHITA DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Takashi Nakamura, Takayuki Imai, Masahiro Yoshida, Miyuki Ishikawa, Hirotaka Hayashi, Toshinori Kanuma
  • Planar light source device and liquid crystal display apparatus
    Publication number: 20060170842
    Abstract: A liquid crystal display apparatus includes a liquid crystal display panel including a display region in which a plurality of pixels are arrayed, and a planar light source device which illuminates the liquid crystal display panel from behind it. The planar light source includes cold cathode fluorescent tubes, a back surface cover, which is substantially rectangular and stores the cold cathode fluorescent tubes, and an upper surface cover attached to the back surface cover. The back surface cover has at least two extended portions, each having a main body portion extending from a side of the back surface cover and a lug portion protruding from the main body portion. The upper surface cover has supporting portions, each supporting at least the lug portion of each extended portion.
    Type: Application
    Filed: January 23, 2006
    Publication date: August 3, 2006
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Makoto Shimizu, Toshihiko Ura, Yoshinori Yasuda, Hiromi Kaneda
  • Display device and method of manufacturing the same
    Patent number: 7084081
    Abstract: A display device includes a display area composed of pixels in a matrix. Each pixel has a light-emitting element and a driving element to supply a driving current to the light-emitting element. The driving element includes a thin film transistor with a semiconductor layer of a poly-crystalline film. The semiconductor layer is provided with channel region, and a source and drain region disposed on both sides of the channel region. The channel region connects the source region to the drain region and has at least two conductive regions with different average grain sizes. The characteristics of the driving elements are made substantially uniform so that the display quality of the display device can be improved remarkably.
    Type: Grant
    Filed: November 26, 2004
    Date of Patent: August 1, 2006
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventor: Yasumasa Goto
  • Retail display unit
    Patent number: 7083054
    Abstract: A glide (20) includes a base (22), a front member, and a number of walls (26) extending front-to-back. Both the base and the front member are advantageously formed as a number of pieces secured side-by-side to provide expandability. The front member may be secured to the walls via dovetail interaction and different front members may be provided for different wall spacings.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: August 1, 2006
    Assignee: Display Technologies, Inc.
    Inventor: Anthony C. Squitieri
  • Display device
    Publication number: 20060164401
    Abstract: A display device includes a display panel having a plurality of pixels in a display region, a contact sensing unit which senses contact of an object with a display screen of the display region, photosensors which detect a position of the object and which are placed in the pixels, and a control circuit which causes the photosensors to operate in a case where the contact sensing unit has sensed contact of the object.
    Type: Application
    Filed: December 27, 2005
    Publication date: July 27, 2006
    Applicant: TOSHIBA MATSUSHITA DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Arichika Ishida