Patents Examined by Robert E. Carter, III
  • Patent number: 8704747
    Abstract: Using technology which uses a single shift register and simultaneously generates multiple pulses, this invention is a liquid crystal display device which rapidly drives data lines. It is possible to increase the frequency of the shift register output signal without changing the frequency of the shift register operation clock. If the shift register output signals, by means of analog switches, are used to determine the video signal sampling timing, high speed data line driving can be realized. Additionally, if the output signals of the shift register mentioned above are used to determine the video signal latch timing in a digital driver, high speed latching of the video signal can be realized. Consequently, even if the driving circuits of the liquid crystal display matrix are composed of TFTs, high speed operation of the driving circuits is possible without increasing power consumption. The shift register can also be used to inspect the electrical characteristics of the data lines and analog switches.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: April 22, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Seiichiro Higashi
  • Patent number: 8681108
    Abstract: An input apparatus 10 has a display unit 11 for displaying a screen composed of a plurality of layers including a first layer for displaying an input area and a second layer for displaying an input area, wherein the second layer is different from that of the first layer, a touch panel 12 arranged in association with the display unit 11 and for detecting an input to an input area, a determination unit 17 for determining an input mode to the touch panel 12, a detection unit 16 for detecting an input to a superimposed area of input areas displayed on the first and second layers and a processing unit 19 for processing, when the input is determined as an input of a first input mode, the input as an input to the input area displayed on the first layer and when the input is determined as an input of a second input mode, the input as an input to the input area displayed on the second layer.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: March 25, 2014
    Assignee: Kyocera Corporation
    Inventor: Tomotake Aono
  • Patent number: 8648883
    Abstract: In a display apparatus and a method of driving the same, an active period during which one pixel is turned on is divided into a red sub frame, a green sub frame, a blue sub frame, and a white sub frame. A controller compares a gray scale of a fourth image data corresponding to the white sub frame with a reference gray scale and compensates a first image data, a second image data, and a third image data corresponding to the red, green, and blue sub frames, respectively, in accordance with the comparison result.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: February 11, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eun-Hee Han, Hee-Seop Kim, Chang-Hun Lee, Jun-Woo Lee
  • Patent number: 8581831
    Abstract: An illuminator for a flat-panel display comprises a tapered slab waveguide 1 co-extensive with the display, a light source 2-4 arranged to inject light into an edge of the waveguide so that it emerges over the face of the waveguide, and means for scanning the light injected into the wedge so that different areas of the panel are illuminated in turn. Preferably the light source is a set of rows of LEDs, each row injecting light at a different range of angles so that it emerges over different areas of the waveguide 1.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: November 12, 2013
    Assignee: Microsoft Corporation
    Inventor: Adrian Robert Leigh Travis
  • Patent number: 8581825
    Abstract: A driving circuit for a flat panel display device includes a generation unit for generating n-phase form generation clocks; and a plurality of shift register stages for sequentially generating a plurality gate signals to a plurality of gate lines using the n-phase form generation clocks, one of the shift register stage including first and second output terminals for outputting first and second switching signals, respectively, using an output signal of one of the preceding shift register stages and an output signal of one of the subsequent shift register stages; a first transistor connected to the first output terminal for receiving one of the n-phase form generation clocks; and a second transistor connected to the second output terminal and the first transistor, wherein each gate line is connected to a node between the first and second transistors.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: November 12, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Ho Jang, Soo-Young Yoon, Nam-Wook Cho
  • Patent number: 8576173
    Abstract: The invention relates to a data processing device (100) enabling a user to input characters, the device comprising a touch-sensitive member (200) arranged to function as a virtual keyboard, said member including at least one touch sensor (160) for detecting touched zones on said member. The device further comprises key allocation means (110) for allocating at least two reference keys (220) of the virtual keyboard in response to said detection of the touched zones. The device comprises at least one pressure sensor (170) for sensing a finger (250) causing a force on the touch-sensitive member higher than other fingers when more than one finger touches said member. A recognition of a key stroke may be realized. The reference keys may be reallocated upon a user's request or detection of a predetermined condition. The invention also relates to a method of enabling a user to input characters.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: November 5, 2013
    Assignee: Koninklijke Philips N. V.
    Inventor: Wilhelmus Franciscus Johannes Verhaegh
  • Patent number: 8564524
    Abstract: A flat panel display comprises a display panel, a scan driving circuit and a control unit, wherein the display panel includes a plurality of scan lines. The scan driving circuit generates the first and the second scan signals to enable a portion of the scan lines. Furthermore, the control unit may enable a control signal every a predetermined duration according to these scan lines.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: October 22, 2013
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chang-Ching Tu, Yu-Chieh Fang
  • Patent number: 8558762
    Abstract: A light emitting display includes: a pixel portion including a plurality of pixels; a scan driver adapted to supply a scan signal to scan lines connected to the pixels; a DC/DC converter adapted to supply a first voltage and a second voltage to the plurality of pixels; and a synchronizer adapted to maintain a ripple voltage of the first voltage at a predetermined level when the scan signals are converted into a turn off voltage. With this configuration, since the ripple voltage of the first voltage is always kept constant when the scan signal is turned off, a uniform brightness in a horizontal line and a frame can be displayed.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: October 15, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Cheon Park, Choon-Yul Oh
  • Patent number: 8487859
    Abstract: The present invention discloses a data driving apparatus and method for a liquid crystal display device having a first multiplexer part performing a time-division on inputted digital pixel data, a digital-analog converter part converting the time-divided digital pixel data from the first multiplexer part to analog pixel signals, a demultiplexer part supplying the analog pixel signals from the digital-analog converter part to a plurality of output channels, and an output part sampling and holding first received analog pixel signals from the demultiplexer part and holding second received analog pixel signals and simultaneously outputting both the first and second received pixel signals to corresponding data lines.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: July 16, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Seok Su Kim, Chang Gone Kim, Gi Suck Kwon, Seok Woo Lee
  • Patent number: 8471802
    Abstract: A small or middle-sized liquid crystal display employing a black insertion driving method overcomes the after-image or blurring of a moving picture by shifting the level of a voltage applied to a storage capacitor line within a predetermined period corresponding to about 20% to about 80% that lasts after image signals are applied to pixels until the next image signals are applied to the pixels by using two types of voltages that shift pixel voltages into a black display potential.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: June 25, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Michiru Senda, Ryoichi Yokoyama
  • Patent number: 8446343
    Abstract: An image display apparatus capable of effecting displays high in both reliability and luminance. With the image display apparatus, a transistor switch is provided between a light emitting device and a drive transistor, and a voltage value expressed by formula (a gate voltage at an on-time of the transistor switch)—(the threshold voltage Vth of the drive transistor) is rendered smaller than a value of a voltage applied to a common electrode of the light emitting device.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: May 21, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hajime Akimoto, Hiroshi Kageyama
  • Patent number: 8436796
    Abstract: A method of applying an OFF-state offset to a display device includes: supplying a ground voltage from a data driving circuit; to a source electrode of a thin film transistor supplying a gate voltage from a gate driving circuit to a gate electrode of the thin film transistor, the gate voltage turning off the thin film transistor; and supplying an AC voltage to a drain electrode of the thin film transistor.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: May 7, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Hun Jeoung, Sung-Hak Lee
  • Patent number: 8421744
    Abstract: An information display has an information carrier including a storable display panel separate from a processing unit including a battery, and where there is a need to perform a process such as updating or manipulating information displayed on the display panel, it is possible to perform a desired process by connecting the processing unit to the information carrier.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: April 16, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Fumio Koyama, Yoshiyuki Kodama, Dai Tanaka
  • Patent number: 8354997
    Abstract: A sensory device (200) for providing a touchless user interface to a mobile device (100) is provided. The sensory device can include at least one appendage (210) having at least one sensor (220) that senses a finger (232) within a touchless sensing space (101), and a connector (230) for communicating sensory signals received by the at least one sensor to the mobile device. The sensory device can attach external to the mobile device. A controller (240) can trace a movement of the finger, recognize a pattern from the movement, and send the pattern to the mobile device. The controller can recognize finger gestures and send control commands associated with the finger gestures to the mobile device. A user can perform touchless acquire and select actions on or above a display or removable face plate to interact with the mobile device.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: January 15, 2013
    Assignee: NaviSense
    Inventor: Marc Andre Boillot
  • Patent number: 8294654
    Abstract: A display device and driving method are provided. A display device includes a display area that includes a plurality of pixel cells in respective pixel regions defined by a plurality of gate and data lines crossing each other. A data driver is operable to supply data signals to the pixel cells. The pixel cells are connected with the first data line and are divided into a plurality of pixel-cell groups. The data driver is operable to supply the data signal of first polarity to the pixel cells included in the odd-numbered pixel-cell groups, and to supply the data signal of second polarity to the pixel cells included in the even-numbered pixel-cell groups. The first polarity is opposite to the second polarity. A shift register that is operable to drive the gate lines to supply the scan pulses of different amplitudes to neighboring pixel cells included in the different pixel-cell groups.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: October 23, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Yong Ho Jang
  • Patent number: 8228281
    Abstract: A gate drive device includes first, second and third stages, each of which for shifting a signal from an input thereof to an output thereof; and a dummy stage having a substantially similar circuit configuration as one of the first, second and third stages, the dummy stage for shifting a signal from an input thereof to an output thereof, wherein the first stage shifts a first start signal from the input thereof for outputting a second start signal to the output thereof, the dummy stage shifts the second start signal from the input thereof for outputting a third start signal to the output thereof, and the third stage shifts the third start signal from the input thereof to the output thereof.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: July 24, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Choel Min Woo
  • Patent number: 8228282
    Abstract: In a gate driving circuit and a display apparatus having the gate driving circuit, a pull-up transistor of a present stage among plural stages, which are connected one after another to each other and sequentially output a gate signal, pulls up a present gate signal output through an output terminal to a gate-on voltage. A buffer transistor is connected to a control terminal of the pull-up transistor to receive a previous output signal from a previous stage and to turn on the pull-up transistor. The buffer transistor has a chargeability that is about two times or greater than the chargeability of the pull-up transistor. Thus, the size of the pull-up transistor may be reduced, thereby preventing a malfunction of the gate driving circuit when the gate driving circuit is operated under conditions of high temperature or low temperature.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: July 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byoung-Sun Na, Dong-Hyeon Ki, Min-Cheol Lee, Soon-Il Ahn
  • Patent number: 8228264
    Abstract: Method and apparatus are provided for driving segments of a bistable display. The method may include providing, at the same time, a plurality of independent waveforms corresponding to display data for driving a plurality of segments of the display. The method may include selecting, for each segment, one of the independent driving waveforms. The method may also include determining whether an update of display data has occurred for one of the segments. The method may include selecting a different one of the waveforms to drive the segment if an update has occurred. The method may further include maintaining a currently selected waveform to drive the segment if an update has not occurred.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: July 24, 2012
    Assignee: Solomon Systech Limited
    Inventors: Chi Wai Ng, Siu Kei Wong, Wai Hon Ng, Man Chun Wong, Jimmy Chiu
  • Patent number: 8212783
    Abstract: Provided is a tactile and visual display device enabling visual information and tactile information to be simultaneously sensed. The tactile and visual display device includes: a display unit comprising a plurality of scan lines, a plurality of data lines and a plurality of pixels; a tactile sensation generator mounted over the display unit, transmitting light emitted from the pixels, comprising a transistor electrically connecting a plurality of corresponding pixels formed to correspond to the pixels with adjacent corresponding pixels, and generating an electrostatic force and a magnetostatic force; and a sensor in contact with the corresponding pixels to sense the generated electrostatic force or magnetostatic force. Accordingly, the texture of an image displayed on a display is provided as tactile information using an electrostatic force and a magnetostatic force, so that tactile information as well as visual information of the conventional display may be simultaneously provided.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: July 3, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong Hyun Kim, Yong Suk Yang, Jin Ho Lee
  • Patent number: 8188936
    Abstract: Described is a mechanism by which application programs (or plug-ins) and an auxiliary service adjust the output and/or data available for output on an auxiliary device based on changes detected in the current context of the auxiliary display. Context sensors detect and report changes in context, whereby some action is taken with respect to what information is displayed or can be displayed on the auxiliary display device. Examples of context data that can change include the physical location of the display, detected movement or motion data, presence of a particular user or others, power state, network connectivity status, privacy status and so forth. The auxiliary device can have context as to its position relative to the main display. Information sensitivity levels may be used to specify whether an application program's data can be displayed, based on the perceived sensitivity of the information and the user's current context.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: May 29, 2012
    Assignee: Microsoft Corporation
    Inventors: Andrew J. Fuller, Matthew P. Rhoten, Juan J. Perez, Christopher A. Schoppa, Curt A. Steeb, Niels van Dongen