Patents Examined by Robin Mak
  • Patent number: 8890825
    Abstract: An apparatus, method, and computer program product are described that determine a position of a touch component of a user input received outside a touch sensitive area of a touch surface by correlating a position of the force component and a position of a touch component of a portion of the user input received within the touch sensitive area with a position of the force component of a portion of the user input received outside the touch sensitive area. In this way, the position of a touch component of the user input received outside the touch sensitive area, where the touch surface is not capable via hardware to detect the position of the touch component, may be determined, and operations may be executed based on the position of the touch component that is determined.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: November 18, 2014
    Assignee: Nokia Corporation
    Inventors: Raja Bose, Jonathan Lester, Jorg Brakensiek
  • Patent number: 8878828
    Abstract: Display driver circuits include a multi-function driver, which is configured to support first and second modes of operation. The multi-function driver supports the first mode of operation in response to a first control signal by driving a bus with an output signal, which has a value that indicates a locked or unlocked status of a clock signal therein. The multi-function driver also supports the second mode of operation in response to a second control signal by driving the bus with multi-bit data that is unrelated to the locked or unlocked status of the clock signal.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: November 4, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Hoon Baek, JaeYoul Lee
  • Patent number: 8810569
    Abstract: An image display device includes a display panel which includes a plurality of subpixels and selectively displays a 2D image and a 3D image, a patterned retarder for dividing light from the display panel into first polarized light and second polarized light, and a control voltage generator, which generates a first DC control voltage of an OFF-level and a second DC control voltage of a slight-on level, which is higher than the OFF-level and is lower than a full-on level, and selectively outputs the first DC control voltage and the second DC control voltage depending on a driving mode.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: August 19, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Kwangjo Hwang
  • Patent number: 8698782
    Abstract: To shorten a period necessary for a plurality of photosensors arranged in a display and data input region to receive light. In a first period, a reset operation is concurrently performed and then a storage operation is concurrently performed in a plurality of first photosensors while a plurality of first light-emitting elements emit light concurrently and a plurality of second light-emitting elements do not emit light. In a second period, the reset operation is concurrently performed and then the storage operation is concurrently performed in a plurality of second photosensors while the plurality of second light-emitting elements emit light concurrently and the plurality of first light-emitting elements do not emit light. In a third period, a selection operation is sequentially performed in the plurality of first photosensors and the selection operation is sequentially performed in the plurality of second photosensors.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: April 15, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Yoshiyuki Kurokawa
  • Patent number: 8593493
    Abstract: A display device includes a liquid crystal panel including a plurality of regions, where each of the regions includes a plurality of liquid crystal pixels; a plurality of data driving units; and a plurality of timing controllers, where the data driving units is in a one-to-one correspondence with the regions, where each of the data driving units controls transmittance of light of the liquid crystal pixels in a corresponding region thereof, where the timing controllers is in a one-to-one correspondence with the data driving units, where each of the timing controllers acquires data of a partial image to be displayed at the corresponding region of the corresponding data driving unit thereof, generates control data for controlling transmittance of light of the liquid crystal pixels of the corresponding region of the corresponding data driving unit thereof, and outputs the control data to the corresponding data driving unit thereof.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: November 26, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hiroshi Ohishi
  • Patent number: 8587620
    Abstract: The present invention provides a method for driving a liquid crystal display panel. The liquid crystal display panel has a plurality of pixels arranged in a matrix form and a plurality of data lines. The method includes generating gray level signals corresponding to the plurality of pixels according to input image data; determining whether the gray level values of the pixels in a same row corresponding to the plurality of data lines of a first color are all outside a first range; and when the gray level values of the pixels in the same row corresponding to the plurality of data lines of the first color are all outside the first range, controlling polarity of the gray level signals of the pixels in the same row corresponding to the plurality of data lines of the first color in a column inversion mode.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: November 19, 2013
    Assignee: AU Optronics Corp.
    Inventors: Hsiao-Chung Cheng, Jen-Chieh Chen, Chao-Ching Hsu
  • Patent number: 8519930
    Abstract: A field sequential liquid crystal display device includes: first, second, third and fourth thin film transistors, a frame buffer capacitor, a storage capacitor and a holding capacitor connected to the storage capacitor in parallel. The gate of first thin film transistor is connected to a gate line, the source thereof is connected to a data line, the drain thereof is connected to the source of second thin film transistor; the source of second thin film transistor is connected to one end of frame buffer capacitor, the drain thereof is connected to the drain of third thin film transistor; the other end of frame buffer capacitor and a source of third thin film transistor are connected to the drain of fourth thin film transistor, the source of fourth thin film transistor is grounded; and the drain of second thin film transistor is connected to one end of storage capacitor.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: August 27, 2013
    Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.
    Inventors: Xixi Luo, Jun Ma, Kang Yang
  • Patent number: 6975294
    Abstract: A laser imaging system with reduced speckle is disclosed. The laser imaging system includes spatially superpositioned 1-D arrays or alternatively 2-D arrays of independent emitters of laser radiation, with each emitter having a spectral bandwidth ??i centered at some arbitrary wavelength ?0i. The elements of the array are allowed, by design, to have a slightly different central wavelength, thereby creating an ensemble bandwidth ?? which is much greater than the bandwidth ??i of any individual emitter in the array. The resulting increased bandwidth reduces speckle in a displayed image.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: December 13, 2005
    Assignee: Corporation for Laser Optics Research
    Inventors: Jeffrey Glenn Manni, Robert J. Martinsen
  • Patent number: 6972750
    Abstract: A touch panel integrated liquid crystal display panel, includes a liquid crystal display panel displaying a picture by driving liquid crystal, a polarizer formed at the top of the liquid crystal display panel, and a touch panel with a separation tag extending outwards from at least one side of the top of the polarizer.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: December 6, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Hwan Seong Yu
  • Patent number: 6956550
    Abstract: A drive module of liquid crystal panel is formed by arranging a plurality of transversal signal scan lines and a plurality of longitudinal data transmission lines on a liquid crystal panel. A signal scan control IC and a data transmission control IC having a memory component and a panel controller built therein are disposed at the upper and lower sides of the liquid crystal panel, respectively. Each of the data transmission lines is connected to the data transmission control IC with the shortest distance. The signal scan lines are connected to contacts at two sides of the signal scan control IC from two sides of the liquid crystal panel. The earlier a signal scan line is for scan, the closer to the inner side it is connected to a contact on the signal scan control IC.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: October 18, 2005
    Assignee: Giantplus Technology Co., Ltd.
    Inventor: Pin Chang
  • Patent number: 6909418
    Abstract: A shift register outputs at a terminal C1 to a data register a timing pulse which is active only for one clock in synchronization to the first rise of a clock CLK after a shift signal STH is received as a start pulse, and thereafter outputs timing pulses at terminals C2 through C64 one after another to the data register. Further, a logical multiplication gate AND2 yields the logical multiplication of a Q-output of an SR-type flip flop SRFF3 and a superimposed signal, whereby an inversion signal intPOL2 is generated. This inversion signal is outputted to the data register. As an OR gate OR1 yields the logical addition of an output of a logical multiplication gate AND3 and a Q-output of a D-type flip flop DFF64, which causes rising of a superimposed signal of an inversion signal POL2 and the shift signal STH which is shifted to a subsequent-stage source driver.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: June 21, 2005
    Assignee: NEC LCD Technologies, Ltd.
    Inventor: Nobuhiro Arai
  • Patent number: 6891530
    Abstract: A touch panel-including illuminator having: a light pipe made of a transparent plate-like material having an upper surface, a lower surface and at least one incidence side surface, the upper surface being provided with light output means through which light incident on the incidence side surface is made to emerge from the lower surface; a light source disposed on the incidence side surface of the light pipe; an adhesive layer; and a touch panel bonded to the upper surface of the light pipe through the adhesive layer; wherein the light output means are constituted by fine grooves which are disposed discontinuously, each of which is made of a concave portion, and each of which is shaped like an approximate triangle in section; and wherein each of the fine grooves has an optical path changing slope and a steep slope.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: May 10, 2005
    Assignee: Nitto Denko Corporation
    Inventors: Seiji Umemoto, Ryoji Kinoshita, Yuuki Nakano, Hiroaki Kishioka, Waka Sakaitani
  • Patent number: 6839047
    Abstract: A display device has pixels, signal lines coupled to the pixels, and a video signal drive circuit for supplying signals to the signal lines in parallel, based upon data transferred serially from an external system. The video signal drive circuit includes plural stages each formed by a column of switching elements. The switching elements of each stage double successively in number as a final stage is approached. Each of the switching elements of each stage excluding the final stage is connected to a pair of switching elements in a succeeding stage. Each of the pair of switching elements is repeatedly and alternately switched ON with the other of the pair of switching elements being switched OFF, and a frequency of the ON-OFF switching of the pair of switching elements of each stage is successively halved as the final stage is approached.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: January 4, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Toshio Miyazawa, Norio Mamba
  • Patent number: 6774891
    Abstract: A transcription system, for determining a position of a stylus relative to a writing surface by receiving supersonic wave transmitted from the stylus when the stylus is positioned adjacent the writing surface, has a pair of supersonic wave detectors provided on a whiteboard. The supersonic wave detector has a detector cover for covering at least a front portion of a supersonic wave receiver of the supersonic wave detector with reference to the supersonic wave transmitted from the stylus. The detector cover has a hole, which is defined right in front of the receiver, having a diameter smaller than a diameter of the receiver. The detector cover further has a conical reflection board provided adjacent the hole of the detector cover.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: August 10, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Koji Hisasue