Patents Examined by Alexander S. Beck
  • Patent number: 8358322
    Abstract: A display includes a plurality of display elements. Each display element includes two opposed electrodes, a first dielectric layer, a fluid including a plurality of colorants, and a second dielectric layer. The first dielectric layer is disposed between the electrodes and has at least one reservoir defined therein. The second dielectric layer exhibits non-linear resistance, and is disposed on at least one of the electrodes and adjacent to the fluid. The fluid is disposed in a space defined between the electrodes, and the plurality of colorants is configured to move in response to an applied electric field.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: January 22, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jong-Souk Yeo, Pavel Kornilovich, Peter Mardilovich, Jeffrey Todd Mabeck
  • Patent number: 8354998
    Abstract: The present invention relates to an information input panel using the light emitted diode (LED) matrix. The panel includes the LED matrix and a control circuit. The LED matrix includes N×M LEDs. The control circuit includes N first terminals and M second terminals, wherein the ith first terminal thereof is coupled to first terminals of the LEDs in the ith row and the jth second terminal thereof is coupled to second terminals of the LEDs in the jth column. In the kth detecting period, the control circuit detects the reverse photoelectric currents of each LED from the second terminals through the kth first terminal to determine whether LED in the kth row is lighted up or not, wherein “M”, “N”, “i”, “j”, “k” are nature numbers and 0<i<=M; 0<j<=N; 0<k<=M.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: January 15, 2013
    Assignee: Generalplus Technology Inc.
    Inventors: Tung-Tsai Liao, Li Sheng Lo
  • Patent number: 8344967
    Abstract: A plasma display apparatus is disclosed. The plasma display apparatus includes a plasma display panel that includes a scan electrode, a sustain electrode, and a data electrode; and a scan driver that supplies the scan electrode with a first driving voltage serving as a reference voltage, a second driving voltage supplied from a single voltage source, and a third driving voltage that has the same magnitude as that of the second driving voltage and has the opposite polarity of that of the second driving voltage.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: January 1, 2013
    Assignee: LG Electronics Inc.
    Inventors: Seokho Kim, Hyungjae Kim, Donghyun Park
  • Patent number: 8344977
    Abstract: A liquid crystal display comprising: a receiver for receiving power and differential signal; a backlight power supply which supplies the power to a backlight unit; a power-off sensor which senses power-off of the backlight power supply and distorts one of the differential signals; and a controller which senses the distortion of the differential signal and generates an after-image removing gray-scale signal.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: January 1, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ju-Young Park, Kyung-Hun Lee
  • Patent number: 8345038
    Abstract: Elements of the present invention relate to systems and methods for image enhancement for color enhancement, brightness enhancement and/or backlight modulation compensation. Some elements comprise backlight illumination level selection.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: January 1, 2013
    Assignee: Sharp Laboratories of America, Inc.
    Inventor: Louis J. Kerofsky
  • Patent number: 8345071
    Abstract: In a display control circuit of this invention, a write gray scale level determining part outputs write gray scale level data for performing overshoot drive on a liquid crystal display device. Moreover, an achievable gray scale level determining part outputs achievable gray scale level data indicating a gray scale level which achieves after a lapse of one frame. Further, an error noise predicting part compares, with a predetermined threshold value, predicted values as differences between gray scale level values of plural pieces of input image data and a mean gray scale level value of these gray scale level values to control a data selecting part such that when at least one of the predicted values exceeds the threshold value, the data selecting part gives, to an image compressing part, the input image data rather than the achievable gray scale level data predicted that a decoding error becomes large. This configuration allows suppression or elimination of after-image noise.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: January 1, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Ryoji Sakurai, Hiroyuki Furukawa
  • Patent number: 8339341
    Abstract: This invention provides an image display system that includes an image display device having an overdrive processing circuit and allows reduction in memory cost as a whole. The image display system according to this invention includes an image generation device that generates image data, and an image display device that receives the image data from the image generation device, performs overdrive processing based on the received image data, and displays an image. The image generation device includes a rendering circuit that generates image data to be outputted to the image display device for every frame, a memory unit that holds the plural pieces of image data corresponding to at least two frames among the plural pieces of image data generated by the rendering circuit, and a transfer circuit that transfers the plural pieces of image data corresponding to two frames among the plural pieces of image data held by the memory unit to the image display device within one frame period.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: December 25, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuhiro Ishiguchi, Akimasa Yuuki
  • Patent number: 8339349
    Abstract: A gate driving unit for a liquid crystal display device including a plurality of liquid crystal pixels, first to Nth gate lines, a plurality of liquid crystal capacitors and a plurality of thin film transistors, includes first and second clock signal lines for providing first and second clock signals; first to Nth shift registers respectively corresponding to the first to Nth gate lines, the first to Nth shift registers receiving one of the first clock signal and the second clock signal and outputting first to Nth scanning signals, respectively; a redundant repair shift register as (N+1)th shift register receiving one of first and second clock signals and outputting a repair scanning signal; a plurality of first switches for respectively connecting one of the first and second clock signal lines to the first to Nth shift registers and the redundant repair shift register; a plurality of second switches for respectively switching a connection of the first to Nth shift registers with the first to Nth gate lines;
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: December 25, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Hong-Jae Shin, Jeom-Jae Kim, Mike (J. S.) Lee
  • Patent number: 8339388
    Abstract: A method and a circuit for controlling a power recovery stage of a plasma display panel including a resonant circuit of at least one inductive element and one capacitive element, wherein the capacitive element is precharged to half a supply voltage of the display panel.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: December 25, 2012
    Assignee: STMicroelectronics S.A.
    Inventors: Bertrand Rivet, Frédéric Gautier, Benoit Peron
  • Patent number: 8330676
    Abstract: This invention provides a plasma tube array-type display device and a luminance correcting method realizing reduced variations in luminance values of a plasma tube array. A gradient of the luminance value in the longitudinal direction of one plasma tube is calculated on the basis of the obtained luminance value at a plurality of positions in the longitudinal direction of at least one plasma tube. A difference of the luminance value of each plasma tube obtained at the same relative position. On the basis of the gradient of the luminance value and the difference of the luminance value of each plasma tube at the same relative position, a correction luminance value in each discharge cell in the longitudinal direction of each of the plurality of plasma tubes is calculated.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: December 11, 2012
    Assignee: Shinoda Plasma Co., Ltd.
    Inventors: Koji Shinohe, Koji Kishimoto, Tetsuya Makino, Hitoshi Hirakawa, Kenji Awamoto
  • Patent number: 8330712
    Abstract: An electrophoretic display device includes a first substrate having a display region and a non-display region at a periphery of the display region, the display region including a pixel region; gate and data lines on the first substrate and in the display region, the gate and data lines crossing each other to define the pixel region; a gate link line connected to the gate line and positioned in the non-display region; a thin film transistor connected to the gate and data lines and positioned in the pixel region, the thin film transistor including a gate electrode, a gate insulating layer, a semiconductor layer, a source electrode and a drain electrode; a passivation layer of an organic insulating material over the thin film transistor and in the display region, the passivation layer having a first thickness and including a drain contact hole exposing the drain electrode; a buffer pattern formed of the same material and having the same thickness as the passivation layer, the buffer pattern positioned in the non
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: December 11, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Jin Park, Seung-Chul Kang
  • Patent number: 8330706
    Abstract: A lighting device for a display device includes a light source and a light source control device arranged to control the light source. The light source control device is arranged to generate a pulse signal as a light source control signal Vcon to control the light source. The light source control signal Vcon includes pulses, which individually have different shapes.
    Type: Grant
    Filed: December 25, 2007
    Date of Patent: December 11, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Masahiro Arai
  • Patent number: 8330687
    Abstract: Disclosed herein is a liquid crystal display in which a system board and a timing control board can be used in common in a 60 Hz driving mode and a 120 Hz driving mode without being modified. The liquid crystal display includes a system board for identifying a driving frequency of video data and supplying the video data and control signals at a first driving frequency or second driving frequency as a result of the identification, a timing control board equipped with a timing controller for processing the video data and control signals from the system board, the timing control board supplying the processed video data and control signals at the first or second driving frequency, and a liquid crystal panel for displaying an image based on the video data and control signals supplied from the timing control board.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: December 11, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Herbert Jung
  • Patent number: 8325124
    Abstract: A display panel is provided and includes a display unit and a control unit. The display unit is coupled to a data line and a first scan line. In the display unit, a liquid crystal capacitor is coupled between a pixel electrode and a first common line, and a storage capacitor is coupled between the pixel electrode and a second common line. The control unit receives first and second common voltages and is controlled by first and second control voltage signals and first and second scan signals which are respectively on the first scan line and a second scan line and driven sequentially. The control unit changes the voltage level of the second common line by a two-step manner according to the first and second common voltages. Through feed-through effect of the storage capacitor, the voltage level of the pixel electrode is changed to a desired level.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: December 4, 2012
    Assignee: Au Optronics Corp.
    Inventors: Kuo-Hao Fanchiang, Kung-Yi Chan, Huan-Hsin Li
  • Patent number: 8319704
    Abstract: A plasma display device, which gradually increases the current to the panel capacitors is disclosed. The display uses an inductor to reduce the current spike which would otherwise occur and create large electromagnetic interference.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: November 27, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Myoung-Kyu Lee, Kazuhiro Ito, Yoo-Jin Song, Tae-Wook Kim
  • Patent number: 8319705
    Abstract: The plasma display device has a display panel having first and second display electrodes and address electrodes, an electrode drive circuit, and a drive control circuit for controlling the electrode drive circuit. The drive control circuit performs a reset drive control, address drive control and sustain drive control in each subfield. The drive control circuit performs an all cell reset drive control which resets all cells in a first subfield out of the plurality of subfields, and an ON cell reset drive control which resets ON cells in a second subfield. At a first temperature T1, an ultimate potential of an slope pulse of the first display electrode is controlled to be a first potential in the ON cell reset drive control, and at a second temperature T2>T1, the ultimate potential is controlled to be a second potential higher than the first potential.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: November 27, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Junichi Kumagai, Katsumi Ito
  • Patent number: 8310418
    Abstract: A self-luminous display device includes: pixel circuits; and a drive circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current channel of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, the drive circuit applies a light emission enabling bias to the light-emitting diode after correcting the drive transistor and writing a data voltage to the control node, provides, during a light emission enabled period in which the light emission enabling bias is applied, a light emission interruption period adapted to change the light emission enabling bias to a non-light emission bias with the data voltage held by the holding capacitor, and performs a light emission disabling process, adapted to reverse-bias the light-emitting diode to stop the light emission, for a constant period after the light emission enabled period.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: November 13, 2012
    Assignee: Sony Corporation
    Inventors: Masatsugu Tomida, Mitsuru Asano
  • Patent number: 8305364
    Abstract: A stylus is used in an electronic device. The electronic device includes a navigation key. The stylus includes a barrel, a tip portion; and a connecting assembly. The tip portion can be detachably attached to an end of the barrel. The connecting assembly includes a main post and four resisting arms, and connects to the other end of the barrel, and the resisting arms are rotatably seated on the tip portion. When the stylus is used as a joystick, the resisting arms are rotated about 90° to form a cross shape, the tip portion is attached to the main post, and the resisting arms latch to the navigation key. The present disclosure further discloses an electronic device using the stylus.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: November 6, 2012
    Assignee: Chi Mei Communication Systems, Inc.
    Inventor: Chih-Chien Huang
  • Patent number: 8300004
    Abstract: A display apparatus includes; a display panel which displays an image in response to a gate voltage and a data voltage, a panel driver which receives a control signal, and which supplies the gate voltage and the data voltage to the display panel according to the control signal, a backlight which supplies a light to the display panel, an inverter which receives a backlight dimming signal, and which controls a brightness of a light emitted from the backlight according to the backlight dimming signal, and a timing controller which receives a synchronization signal, determines a frame frequency of the display panel according to the synchronization signal, outputs the control signal, and modulates the synchronization signal based on a ratio of a predetermined backlight dimming frequency to the frame frequency, and which outputs the backlight dimming signal according to the modulated synchronization signal.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: October 30, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Hyun Yeo, Byung-Kil Jeon, Yong-Bum Kim, Jang-Hyun Yeo
  • Patent number: 8294652
    Abstract: A driving method for driving an LCD panel having a counter electrode and a source line. In a first period, the counter electrode is driven to a potential VCOMH. In a second period, the counter electrode and the source line are short-circuited to a power supply interconnection having a power supply potential VCI. In a third period, the counter electrode is connected to a ground interconnection while the source line is kept to be short-circuited to the power supply interconnection. In a fourth period, the counter electrode is pulled down to a potential VCOML lower than a ground potential In a fifth period, the source line is driven to a potential corresponding to an image data while the counter electrode is kept to the potential VCOML. The electric power consumed in pulling down the counter electrode from a positive potential to a negative potential can be effectively reduced.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: October 23, 2012
    Assignee: Renesas Electronics Corporation
    Inventor: Hiroaki Shirai