Patents Examined by Jonathan Horner
  • Patent number: 8803787
    Abstract: A liquid crystal display apparatus includes a display panel which a plurality of pixel lines each having a plurality of liquid crystal pixels, an illumination light source which illuminates the display panel, and a display control section which outputs a signal voltage sequentially to the pixel lines to write a video signal, and which controls ON/OFF of the illumination light source, wherein the display control section includes, a temperature detector which detects temperature information, and a timing control section which lights the illumination light source after a video signal writing operation into a predetermined pixel line is completed when the temperature information is a first temperature, and which lights the illumination light source before the video signal writing operation into a predetermined pixel line is completed when the temperature information is a second temperature that is lower than the first temperature.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: August 12, 2014
    Assignee: Japan Display Inc.
    Inventors: Tetsuya Kojima, Kazuhiro Nishiyama
  • Patent number: 8797246
    Abstract: A liquid crystal display substrate has a data driver circuit and a gate driver circuit for driving the liquid crystal display integrated thereon together with a common drive circuit, where common voltages VCOMH and VCOML are applied from the outside through a pad. The gate driver circuit is placed to be adjacent to one of the four terminals of the liquid crystal display. The common drive circuit is placed to be adjacent to the terminal opposite to where the gate driver circuit is placed and as close to the pad as possible while having almost the same width as the area of the gate driver circuit. The pad close to where the common drive circuit is placed is used as the pad for applying the common voltages VCOMH and VCOML.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: August 5, 2014
    Assignee: Gold Charm Limited
    Inventor: Katsumi Abe
  • Patent number: 8780039
    Abstract: An optical system is provided, for example for use with a display device, for varying the shape of a surface in which an image displayed by the display device is perceived. The optical system comprises first and second spaced-apart partial reflectors, at least one of which is switchable between a first non-flat shape and a second different shape, which may be flat or non-flat. The reflectors, together with polarisation optics, provide a light path such that light from the display is at least partially transmitted by the first reflector, partially reflected by the second reflector, partially reflected by the first reflector and partially transmitted by the second reflector. Light which does not follow the light path is prevented from leaving the optical system.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: July 15, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Gregory Gay, Lesley Anne Parry-Jones
  • Patent number: 8754877
    Abstract: A liquid crystal panel unit, a display device, and a method of manufacturing the same, in which the display device includes: a display panel that includes a display region; a gate driver that applies a gate signal to the display region; a data driver that applies a data signal to the display region; a vertical synchronization signal line that transfers a vertical synchronization start signal to the gate driver; a data signal line that transfers the data signal to the data driver; and an isolation pattern that is arranged between the vertical synchronization signal line and the data signal line. The isolation pattern intercepts an electromagnetic field that is generated and prevents image degradation.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: June 17, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Heung-Su Cho
  • Patent number: 8749465
    Abstract: A method for driving an active matrix display wherein each image frame is divided into a number of displayed frame portions, each of which is followed by a darker frame portion. The image data in the darker frame portion is removed so as to allow the pixel luminance to diminish. The temporal separation between the displayed frame portion and the following darker frame portion is smaller than a frame time. In a display where the lines are driven repetitively for forming the display image in a plurality of frame times, the image data provided to a pixel, after the luminance in that pixel changes from low to high, is adjusted so that the brightness of the pixel in the preceding frame times appear higher or not lower than that in following frames times.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: June 10, 2014
    Assignee: AU Optronics Corporation
    Inventors: Yu-Hsi Ho, Wen-Chieh Chang, Fang-Yu Su, Yao-Jen Hsieh
  • Patent number: 8743032
    Abstract: Disclosed here in is a display apparatus, including, a pixel array section including a plurality of pixels arrayed in rows and columns and each including an electro-optical device, a pixel circuit provided commonly to each plural ones of the pixels in the same pixel row in the pixel array section and including a writing transistor for writing an image signal, a holding capacitor for holding the image signal written by the writing transistor and a driving transistor for driving the electro-optical devices of the plural pixels, and a plurality of scanning circuits configured to time-divisionally and selectively place the electro-optical devices included in the pixels into a forwardly biased state.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: June 3, 2014
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Katsuhide Uchino
  • Patent number: 8723785
    Abstract: A liquid crystal display includes: a transmissive liquid crystal display device having a display region made up of pixels arrayed in a matrix fashion. The liquid crystal display device includes a planar light source unit formed of planar light source units corresponding to respective display region units on an assumption that the display region is divided into the display region units and configured in such a manner that each planar light source unit irradiates a corresponding display region unit with light, and a drive circuit driving the liquid crystal display device and the planar light source device. The liquid crystal display device is scanned line-sequentially and the pixels making up each display region unit are scanned line-sequentially. A planar light source unit corresponding to a display region unit is held in a luminous state over a predetermined period since a line-sequential scan on the display region unit has been completed.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: May 13, 2014
    Assignee: Sony Corporation
    Inventors: Hideki Sugimoto, Hiroshi Hasegawa
  • Patent number: 8711064
    Abstract: A digital-signal processing apparatus for processing elementary-color data to be output to a liquid-crystal display apparatus having a color panel structure, the digital-signal processing apparatus including: a line-unit weight-coefficient sum computation section; a compensation-coefficient computation section; a partial-weight-coefficient-sum computation section; a first-compensation-quantity-component computation section; a second-compensation-quantity-component computation section; a compensation-quantity computation section; a line memory used for applying a 1-line period extension process to each elementary-color data; and a horizontal-cross-talk compensation section for successively compensating each elementary-color data, which has been subjected to the 1-line period extension process in the line memory.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: April 29, 2014
    Assignee: Sony Corporation
    Inventors: Takashi Hirakawa, Masakazu Aoki, Naoki Ohashi
  • Patent number: 8704755
    Abstract: An electrophoretic display includes a display area where images are displayed, and an edge area around the display area and where a single color is displayed. The display area includes a plurality of display pixels which include gate lines on a first substrate, data lines intersecting the gate lines, thin film transistors connected to the gate lines and data lines, display pixel electrodes on the first substrate and connected to the thin film transistors, a common electrode on a second substrate and facing the first substrate, and an electronic ink layer between the display pixel electrodes and the common electrode The edge area includes a plurality of edge pixels which include edge pixel electrodes in a same shape as the display pixel electrodes.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: April 22, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Sun Kim, Seong-Young Lee
  • Patent number: 8681077
    Abstract: When light emitting elements have the same luminance, luminosity obtained from one pixel can be higher as area of a light emitting region in the pixel (also called an aperture ration) is increased. The aperture ratio of a pixel is low if the number of transistors and wires constituting the pixel is large. Thus, the invention is to decrease the number of transistors and wires constituting a pixel to increase the aperture ratio. Instead of a power supply line to which a certain potential is set, a potential supply line which controls a potential by a signal is provided; supplying an applied voltage to a light emitting element can be controlled by a signal of the potential supply line without providing a switch.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: March 25, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 8674949
    Abstract: A liquid crystal display apparatus includes a display panel configured to have a plurality of scanning lines for which liquid crystal display elements each containing an optical input device and a display pixel are arranged, respectively, a backlight configured to be arranged facing the display panel to illuminate the display panel, and a control part configured to control writing into the display pixel and reading of a detection signal of the optical input device, wherein the control part displays an external light detection image substantially shielding light from the backlight on the display pixels throughout a first period of a frame period, and displays a display image on the display pixels throughout a second period of the frame period.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: March 18, 2014
    Assignee: Japan Displays Inc.
    Inventors: Kenji Nakao, Yasuyuki Tsuji, Mitsutaka Okita, Shigesumi Araki
  • Patent number: 8669932
    Abstract: A liquid crystal display and a driving method thereof are provided.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: March 11, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Hong Chul Kim
  • Patent number: 8669930
    Abstract: A liquid crystal display and a method for driving the same, wherein one or more horizontal lines carrying no data among horizontal lines of a progressive-processed frame can be compensated with data, are provided. The liquid crystal display includes a frame processor, a timing controller, and a data driver. The frame processor performs data compensation of at least one horizontal line carrying no data among horizontal lines of an input frame. The timing controller controls a driving operation of the frame compensated by the frame processor. The data driver drives the frame compensated by the frame processor on a liquid crystal display panel under control of the timing controller.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: March 11, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Seong Gyun Kim, Tae Ho You
  • Patent number: 8648850
    Abstract: A method and apparatus for controlling picture quality of a flat panel display capable of electrically compensating for a display defect of a display panel are disclosed. The method of compensating for a display defect of a flat panel display includes reading identification information of a display panel; generating positional information indicating the position of the display defect and the form of the display defect of the display panel on the basis of first input information and the identification information; generating a compensation value for compensating the degree of the display defect of on the basis of second input information; storing the positional information and the compensation value in a memory; and reading the positional information and the compensation value from the memory, modulating data to be displayed at the position of the display defect of the display panel by the compensation value, and displaying the modulated data on the display panel.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: February 11, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Hye Jin Kim
  • Patent number: 8648780
    Abstract: A backlight display has improved display characteristics. An image is displayed on the display which includes a liquid crystal material with a light valve. The display receives an image signal and modifies the light based upon motion.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: February 11, 2014
    Assignee: Sharp Laboratories of America, Inc.
    Inventor: Xiao-Fan Feng
  • Patent number: 8638287
    Abstract: Provided is a liquid crystal display device that can improve the image quality of a moving image. The liquid crystal display device includes a driver, a backlight unit, a first lamp driver, a second lamp driver, and a lamp driving controller. The liquid crystal panel divided is into at least three regions, and has a plurality of lamps arranged to correspond to each of the divided regions. Lamps of the lamps arranged in upper and lower regions of the liquid crystal panel are connected to each other. The first lamp driver controls on/off times of the lamps in the upper and lower regions of the liquid crystal panel. The second lamp driver controls on/off times of the lamps in the region excluding the upper and lower regions of the liquid crystal panel. The lamp driving controller controls the first and second lamp drivers using signals supplied from the driver.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: January 28, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Ki Duk Kim
  • Patent number: 8633874
    Abstract: A display device includes luminescence pixels arranged in rows and columns. Each of gate lines and reset lines correspond to one of the rows, and signals lines each correspond to one of the columns. Each luminescence pixels includes a luminescence element, a switching transistor, a drive transistor which supplies current to the luminescence element, and a reset transistor. The reset transistor includes a gate terminal connected to a corresponding reset line, one of a source and drain terminal connected to a source or drain terminal of the drive transistor, and the other of the source and drain terminal connected to a corresponding gate line. A capacitor is connected between the gate terminal and the source terminal of the drive transistor.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: January 21, 2014
    Assignee: Panasonic Corporation
    Inventor: Masafumi Matsui
  • Patent number: 8629824
    Abstract: A liquid crystal display device is disclosed, which can reduce a unit cost and prevent deterioration of picture quality caused by unfilled pixel cells, the liquid crystal display device comprising a liquid crystal panel including a plurality of pixel cells formed at every regions defined by ‘n’ gate lines and ‘m’ data lines, three colors alternatively arranged along the data line direction, and the same colors arranged along the gate line direction; a gate built-in circuit, built-in the liquid crystal panel, for supplying gate-on voltages to the gate lines; and a driving integrated circuit, formed in the liquid crystal panel, for driving the gate built-in circuit, inverting a polarity of video signal in the unit of each data line and at least three gate lines, and supplying the video signal having the inverted polarity to the data lines.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: January 14, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Chang Keun Park
  • Patent number: 8619013
    Abstract: A digital-analog converter (DAC) including: a gray scale generator having a plurality of switches for generating desired gray scale voltages through charge sharing between at least two data lines; a switching signal generator for providing operation control signals for the plurality of switches of the gray scale generator; and a reference voltage generator for generating reference voltages and for providing the reference voltages to the gray scale generator. In one embodiment, the charge sharing used by the DAC is executed by a holding capacitor and a sampling capacitor, and the holding capacitor and the sampling capacitor are formed using respective parasitic capacitance components existing in the at least two data lines, thereby reducing area and power consumption over an existing R-string type of DAC.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: December 31, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Oh Kyong Kwon, Byong Deok Choi
  • Patent number: 8614699
    Abstract: A problem in that a light emitting element slightly emits light is solved by an off current of a thin film transistor connected in series to the light emitting element, thereby a display device which can perform a clear display by increasing contrast, and a driving method thereof are provided. When the thin film transistor connected in series to the light emitting element is turned off, a charge held in the capacitance of the light emitting element itself is discharged. Even when an off current is generated at the thin film transistor connected in series to the light emitting element, this off current charges this capacitance until the capacitance of the light emitting element itself holds a predetermined voltage again. Accordingly, the off current of the thin film transistor does not contribute to light emission. In this manner, a slight light emission of the light emitting element can be reduced.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: December 24, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroyuki Miyake, Tomoyuki Iwabuchi, Ryota Fukumoto