Patents Assigned to Display Technologies
  • Patent number: 7333079
    Abstract: In an active matrix organic EL display including a drive control element which has a first terminal connected to a first power supply terminal, a control terminal, and a second terminal which outputs a driving current having a magnitude corresponding to the voltage between the first terminal and the control terminal, a capacitor which has one electrode connected to the control terminal and can maintain the voltage between the first terminal and the control terminal constant, and an organic EL element connected between the second terminal and a second power supply terminal, a plurality of switches connected in series are used as switches between the second terminal and the control terminal to obtain a perfect nonconductive state, and the switch on the control terminal side is set in the nonconductive state earlier than the remaining switch, thereby decreasing the potential shift amount generated by the capacitance of the switches themselves.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: February 19, 2008
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Makoto Shibusawa, Yoshiro Aoki, Hirondo Nakatogawa
  • Publication number: 20080036722
    Abstract: To effectively perform an MF drive by using a simple configuration, a scanning line drive circuit for a display device includes scanning-line driving shift registers serially disposed at a plurality of stages; first switch elements each connected between an output terminal of a first one of the scanning-line driving shift registers and an input terminal of a second scanning-line driving shift register disposed at the following stage; second switch elements each connected between the output terminal of a first one of the scanning-line driving shift registers and the input terminal of a third scanning-line driving shift register disposed at the N+1-th stage following the first scanning-line driving shift register; and a control circuit which controls the first switch elements and the second switch elements.
    Type: Application
    Filed: July 23, 2007
    Publication date: February 14, 2008
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Seiichi URAMOTO, Tetsuo MORITA
  • Patent number: 7326653
    Abstract: A method for preparing an organic electronic or optoelectronic device is described. The method comprises depositing a layer of fluorinated polymer on a substrate, patterning the layer of fluorinated polymer to form a relief pattern and depositing from solution a layer of organic semiconductive or conductive material on the substrate. The fluorinated polymer may be a fluorinated photoresist and may be treated by exposure to ultraviolet light and ozone prior to the deposition of the layer of organic semiconductive or conductive material. The method has particular application in the preparation of organic light emitting devices by ink-jet printing.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: February 5, 2008
    Assignee: Cambridge Display Technology Limited
    Inventors: Alec Gunner, Martin Cacheiro
  • Patent number: 7327417
    Abstract: A display device includes a transmissive liquid crystal display panel that is disposed on a front side of a display medium that effects variable display, and an area light source device that is disposed between the liquid crystal display panel and the display medium and illuminates a back surface of the liquid crystal display panel. The area light source device includes a light source, and a light guide that includes a transmissive display part, which is opposed to the display medium, and emits light, which is radiated from the light source, toward the liquid crystal display panel. The light guide is configured such that a thickness at an end face along an edge that defines the transmissive display part is less than a thickness at a surface of the light guide, which is opposed to the light source.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: February 5, 2008
    Assignee: Toshiba Matsushita Display Technology
    Inventors: Masakazu Kitagawa, Hiroshi Nagahama
  • Patent number: 7324351
    Abstract: Provided is a wiring board including an insulating substrate with a first region and a second region adjacent to each other on a major surface, signal line groups arrayed on the first region, and connection portions arranged on the second region in correspondence with the signal line groups, wherein each connection portion includes first to third terminal groups, a first wiring line group connecting the first terminal group to the corresponding signal line group, a second wiring line group connected to the second terminal group, and a third wiring group connected to the third terminal group, wherein the second and third wiring line groups are connected to each other between each adjacent connection portions, and all of the connection portions are the same in shapes of the first to third terminal groups and the first to third wiring line groups.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: January 29, 2008
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventor: Yoshiro Aoki
  • Publication number: 20080018612
    Abstract: In order to improve accuracy in determining whether or not an object touches a display screen, a display device includes a display unit and a processor. The display unit includes an image display unit which displays an image on a display screen, an optical input unit which picks up an image of an object adjacent to the display screen and a capacitive coupling detector which detects a capacitive coupling to the object adjacent to the display screen. The processor determines that the object touches the display screen by using, and concurrently calculates the coordinates touched by the object by using the capacitive coupling detected by the capacitive coupling detector, and the image picked up by the optical input unit.
    Type: Application
    Filed: April 2, 2007
    Publication date: January 24, 2008
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takashi NAKAMURA, Takayuki Imai, Hirotaka Hayashi, Norio Tada, Hiroki Nakamura
  • Publication number: 20080018837
    Abstract: In the optically compensated bend (OCB) type liquid crystal display device comprises a substrate 20 having a plurality of stripe-like color filters in a plurality of different colors from one another aligned in parallel with and spaced apart from each other on the substrate, a transparent electrode deposited on the color filter and an orientation film deposited on the transparent electrode, the orientation film being treated with an orientation process in a direction along a longitudinal direction of the stripe of the stripe-like color filter, and rugged portions on an edge of the color filters adjacent to each other.
    Type: Application
    Filed: July 13, 2007
    Publication date: January 24, 2008
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Kenji Nakao, Tetsuya Kojima
  • Patent number: 7321308
    Abstract: An anti-theft security holder for cylindrical articles includes a support member, and EAS marker and an outer sleeve is disclosed. The support member is preferably shaped to receive the cylindrical item in a seated position and the EAS marker may be supported within the support member such that is sandwiched between the support member and the cylindrical article during use. An outer sleeve, for example a plastic shrink-wrapped sleeve, may be used to secure the support member to the cylindrical article. In one embodiment, the side walls are rigid and are supported at an angle such that a gap is formed between a portion of the article and the base so that the EAS member fits with the gap.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: January 22, 2008
    Assignee: Display Technologies, Inc.
    Inventor: Jeffrey A Feibelman
  • Patent number: 7319408
    Abstract: An outdoor display includes a net formed of intersecting cables and a number of pixel display units disposed on the net at the intersection of a pair of cables. Each pixel unit includes a number of different colored LEDs. The LEDs of the pixel units forming the display are selectively activated to form a still image or moving video images. The net display can be attached to, supported by or between existing structures.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: January 15, 2008
    Assignee: Advance Display Technologies, Inc.
    Inventor: John W. Temple
  • Patent number: 7317500
    Abstract: In a liquid crystal display device including not only a color display screen but also a monochrome display screen, blue color layers are partially formed in each area corresponding to each reflective electrode in an auxiliary screen for monochrome display in order to suppress yellowing of the monochrome display screen caused by wavelength dispersion characteristics of liquid crystal. The blue color layers are formed, for example, in a random pattern such as a dot pattern.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: January 8, 2008
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Hirokazu Morimoto, Keiji Tago
  • Publication number: 20080001070
    Abstract: A display device has a predetermined display region and includes an array substrate equipped with a drive circuit, and a light sensor for measuring outside illuminance and a temperature sensor both installed on the array substrate. A control method for the display device includes using the light sensor to measure outside illuminance and using an output of the temperature sensor to correct an output of the light sensor, thereby adjusting luminance in the display region. The display device may further include an opposed substrate in opposition to the array substrate, a liquid crystal layer sandwiched between the two substrates to form the predetermined display region, and a backlight, thereby constituting a liquid crystal display device.
    Type: Application
    Filed: May 23, 2007
    Publication date: January 3, 2008
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takashi Nakamura, Hirotaka Hayashi, Norio Tada, Hiroki Nakamura
  • Patent number: 7315343
    Abstract: A liquid crystal display device comprises a liquid crystal display panel including a liquid crystal layer for a display in an OCB mode, a heating unit which heats the liquid crystal display panel, a temperature detecting unit for detecting a temperature of the liquid crystal display panel, a time measuring unit which measures a heating time that the heating unit has operated, and a transfer drive circuit which applies a transfer drive voltage to the liquid crystal layer to transfer the alignment state of liquid crystal molecules from a splay alignment to a bend alignment in advance. The transfer drive circuit is configured to determine a transfer time as an application period of the transfer drive voltage on the basis of a relationship between the heating time and temperature which are obtained from the time measuring unit and temperature detecting unit at a desired timing.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: January 1, 2008
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventor: Masahiko Takeoka
  • Publication number: 20070296688
    Abstract: A liquid crystal panel brightness controller notifies a backlight controller that an illuminance of ambient light is equal to or less than a threshold value. Upon notification, the backlight controller causes invisible light emitted, for example. The invisible light passes through a liquid crystal panel and is reflected by an imaging target and is received by photosensors. Accordingly, the decrease in the amount of the visible light received by photosensors is compensated. As a result, an image with a high S/N ratio is obtained.
    Type: Application
    Filed: April 2, 2007
    Publication date: December 27, 2007
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Hiroki Nakamura, Takashi Nakamura, Hirotaka Hayashi, Norio Tada, Takayuki Imai
  • Publication number: 20070290976
    Abstract: An object is to provide an OCB-mode liquid crystal display device causing no flicker even with varying environment temperature, and flicker prevention is offered by dividing a transition voltage to that of a first pulse and that of a latter pulse, and varying a ratio of pulse width of a transition voltage, i.e., between the first pulse and the latter pulse, together with any detected environment temperature.
    Type: Application
    Filed: June 11, 2007
    Publication date: December 20, 2007
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Midori Tsukane, Kenji Nakao
  • Publication number: 20070285003
    Abstract: This disclosure generally relates to improved structures for organic light emitting diodes (OLEDs), and more particularly to so-called top emitting OLEDs.
    Type: Application
    Filed: January 25, 2005
    Publication date: December 13, 2007
    Applicant: CAMBRIDGE DISPLAY TECHNOLOGY LTD.
    Inventors: Euan Smith, Faisal Qureshi
  • Publication number: 20070285243
    Abstract: An anti-theft security tag includes an engagement member having a first and second end securable within a housing by a crimping member for attachment to an article. In one embodiment, the housing supports an electronic article surveillance marker and may include a channel for receiving and securing at least one self crimping member. The self crimping member is sized to receive one end of the engagement member. The one or more crimping members may be disc shaped, including a plurality of fingers for securing one end of the engagement member, or may have a variety of other shapes. The self crimping members allow the engagement member to be moved downward, but not upward, so as to make the engagement loop smaller. In another embodiment, the crimping member is manual and a slot is disposed within the housing in alignment with the at least one crimping member, and is sized to receive a crimping tool to crimp the member and secure the line to the article within the housing.
    Type: Application
    Filed: April 16, 2007
    Publication date: December 13, 2007
    Applicant: Display Technologies, Inc.
    Inventor: Jeffrey Feibelman
  • Publication number: 20070278949
    Abstract: An organic light emitting diode (OLED) device having at least one pixel, comprising a planar light coupling layer having a front surface and a back surface, said layer having a thickness T; a light emitting portion for each pixel, disposed on the back surface of the light coupling layer; and a microlens for each pixel, having a radius of curvature R, disposed on the front surface of the light coupling layer such that its center of curvature is within the light coupling layer, wherein the radius of curvature R and the thickness T are such that R=xT, where x has a value in the range from 0.2 to 0.8. The OLED device exhibits improved light emission through the use of the microlenses, formed in or attached to the light coupling layer, when so configured that the radius of curvature (R) to substrate thickness (T) ratio (R/T) is in the range from 0.2 to 0.8, preferably in the range from 0.45 to 0.6.
    Type: Application
    Filed: March 2, 2005
    Publication date: December 6, 2007
    Applicant: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED
    Inventors: Euan Smith, Faisal Qureshi
  • Patent number: 7293905
    Abstract: An area light source device includes a light source, a light guide including a first side surface on which emission light from the light source is incident, and a first major surface and a second major surface, which are opposed to each other and from which the incident light on the first side surface emerges, an optical sheet that is disposed on the second major surface side of the light guide and has a reflective surface on a side thereof that is opposed to the second major surface, and a film member that is disposed between the light guide and the optical sheet, has light transmissivity and has a projection-and-recess-shaped portion on a surface thereof.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: November 13, 2007
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventor: Takayoshi Tsukamoto
  • Patent number: D557343
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: December 11, 2007
    Assignee: Display Technologies, Inc.
    Inventors: Jeffrey Feibelman, Normand Thibaudeau, William Duarte, David Miller
  • Patent number: D561261
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: February 5, 2008
    Assignee: Display Technologies, Inc.
    Inventor: Jeffrey A. Feibelman