Patents Examined by Tsegaye Seyoum
  • Patent number: 8947399
    Abstract: A capacitive touch panel sequentially has a first transparent substrate, a lower touch sensitive layer, a lower conductor layer, a lower insulation layer, a lower conductive adhesive layer, a flexible circuit board, a transparent insulation adhesive layer, an upper insulation layer, an upper conductive adhesive layer, an upper conductor layer, an upper insulation ink layer, an upper touch sensitive layer and a second transparent substrate. The aforementioned structure allows fabrication of the capacitive touch panel to be separated into a lower panel fabrication process and an upper panel fabrication process. The two independent fabrication processes prevent the capacitive touch panel from being damaged in one of the processes when the process is completed, thereby increase the yield in production and further facilitate producing large-size touch panel.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: February 3, 2015
    Assignee: TPK Touch Solutions Inc.
    Inventor: David Mi
  • Patent number: 8947398
    Abstract: A capacitive touch panel sequentially has a first glass substrate, a lower touch sensitive layer, a lower insulation ink layer, a lower conductor layer, a lower insulation layer, a lower conductive adhesive layer, a flexible circuit board, a transparent insulation adhesive layer, an upper insulation layer, an upper conductive adhesive layer, an upper conductor layer, an upper insulation ink layer, an upper touch sensitive layer and a second glass substrate. The aforementioned structure allows fabrication of the capacitive touch panel to be separated into a lower panel fabrication process and an upper panel fabrication process. The two independent fabrication processes prevent the capacitive touch panel from being damaged in one of the processes when the process is completed so as to increase the yield in production and further facilitate producing large-size touch panel.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: February 3, 2015
    Assignee: TPK Touch Solutions Inc.
    Inventor: David Mi
  • Patent number: 8937610
    Abstract: A capacitive touch panel sequentially has a first glass substrate, a lower touch sensitive layer, a lower insulation ink layer, a lower conductor layer, a lower insulation layer, a lower conductive adhesive layer, a flexible circuit board, a transparent insulation adhesive layer, an upper insulation layer, an upper conductive adhesive layer, an upper conductor layer, an upper insulation ink layer, an upper touch sensitive layer and a second glass substrate. The aforementioned structure allows fabrication of the capacitive touch panel to be separated into a lower panel fabrication process and an upper panel fabrication process. The two independent fabrication processes prevent the capacitive touch panel from being damaged in one of the processes when the process is completed so as to increase the yield in production and further facilitate producing large-size touch panel.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: January 20, 2015
    Assignee: TPK Touch Solutions Inc.
    Inventor: David Mi
  • Patent number: 8907917
    Abstract: Disclosed is a liquid crystal display device which can sense a change of static capacitance of liquid crystals caused by a touch to detect the touch and a position of the touch, the liquid crystal display device includes, a pixel transistor on each of crossed portions of gate lines and data lines and a pixel electrode at each of the pixel regions, a liquid crystal capacitor between the pixel electrode and a common electrode, a storage line formed on the first substrate, a switching line formed in parallel to the gate line, a read out line parallel to the data line, a first storage capacitor between the storage line and the pixel transistor, a second storage capacitor and a sensing capacitor in series between the switching line and the common electrode, a switching transistor having a gate electrode connected to a contact point of the second storage capacitor and the sensing capacitor, and a drain electrode connected to the read out line.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: December 9, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Cheol-Se Kim
  • Patent number: 8890796
    Abstract: A method and a circuit for synchronizing input and output synchronizing signals are disclosed. The method for synchronizing input and output synchronizing signals includes detecting an Nth (N is a positive integer) input period of the input synchronizing signal, determining whether the detected Nth input period is the same with a prior (N?1) the output period of the output synchronizing signal, detecting a difference between an end time of the (N?1)the output period and an end time of the Nth input period, if the detected Nth input period is not the same with the (N?1)the output period, operating the detected difference with the Nth input period, and setting the operated value as an Nth output period, and generating and outputting the output synchronizing signal having the set Nth output period.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: November 18, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Joung-Woo Lee, Jun-Hyeok Yang
  • Patent number: 8878812
    Abstract: There is offered a signal processing circuit for an electrostatic capacity type touch sensor capable of detecting a larger number of locations with a smaller number of touch pads as well as improving noise immunity. A selection circuit selects either a signal from a combination of the first and second kinds of touch pads outputted through the first and second output terminals CO1 and CO2 in a touch panel or a signal from a combination of the third and fourth kinds of touch pads outputted through the third and fourth output terminals CO3 and CO4. An electric charge amplifier outputs first and second output voltages V1 and V2 corresponding to a difference between capacitances of the touch pads on the touch panel based on the signals from the selected combination. A delta sigma type A/D converter converts the first and second output voltages V1 and V2 into digital signals.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: November 4, 2014
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Kazuyuki Kobayashi, Tatsuya Suzuki, Kumiko Fukai, Yasuhiro Kaneta
  • Patent number: 8872865
    Abstract: A pixel driving circuit includes a first pixel, a second pixel, and a data driving circuit. Each pixel includes a main region and a sub region. The main region stores a gray level voltage and the sub region stores a gray level voltage corresponding to the gray level voltage stored in the main region when the main region and the sub region display image. In the data driving circuit, first, second, third, and fourth gray level voltages are generated by means of a first selecting circuit outputting first digital data corresponding to the first pixel and second digital data corresponding to the second pixel to the corresponding digital-to-analog converters. The first, second, third, and fourth gray level voltages are distributed to the main and sub regions of the first and second pixels by a second selecting circuit, thereby reducing the number of digital-to-analog converters.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: October 28, 2014
    Assignee: AU Optronics Corp.
    Inventors: Meng-Ju Wu, Chun-Fan Chung
  • Patent number: 8872759
    Abstract: A writing apparatus for performing a writing operation on an electronic paper includes a writing controller and a pixel array writing unit. The writing controller includes a data driving unit for providing a plurality of data signals, and a scan driving unit for providing a plurality of scan signals. The pixel array writing unit is coupled electrically to the data driving unit and the scan driving unit, and is adapted to be disposed to confront a first planar side of the electronic paper for performing the writing operation on the electronic paper as controlled by the writing controller, where the data signals are written into the electronic paper with reference to the scan signals so as to enable the electronic paper to display a corresponding image.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: October 28, 2014
    Assignee: Winstron Corporation
    Inventor: Yao-Tsung Chang
  • Patent number: 8786538
    Abstract: A display device comprises a display panel including data lines and gate lines crossing each other, a data driving circuit configured to convert digital video data into data voltages which are supplied to the data lines, a gate driving circuit configured to sequentially supply gate pulses to the gate lines, wherein a voltage of each of the gate pulses increases from a gate low voltage to a precharging voltage during a first rising time and thereafter increases from the precharging voltage to a gate high voltage during a second rising time, and wherein the voltage of each of the gate pulses decreases from the gate high voltage to the precharging voltage during a first falling time and thereafter decreases from the precharging voltage to the gate low voltage during a second falling time.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: July 22, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Sunguk Byun, Keuksang Kwon, Nakjin Seong, Sangsoo Han, Kyuman Lee, Dongkyoon Heo
  • Patent number: 8654066
    Abstract: Provided are a display apparatus and a method for controlling a backlight. A display apparatus including a backlight partitioned into a plurality of sections according to an exemplary embodiment of the present invention includes: an external brightness measurer measuring and providing front brightness values of the display apparatus corresponding to the sections; an image signal analyzer analyzing an inputted image signal and calculating and providing a brightness influence value of each section by adjacent sections; and a control signal corrector converting a source backlight control signal of each section corresponding to the image signal into an intermediate backlight control signal of each section on the basis of the front brightness values and the brightness influence values of the sections and comparing the intermediate backlight control signal with the previous final backlight control signal to generate the current final backlight control signal.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: February 18, 2014
    Assignee: Korea Electronics Technology Institute
    Inventors: Hye Dong Jung, Hyung Su Lee
  • Patent number: 8599223
    Abstract: A display device includes a first reference pixel section configured to be driven to emit light at a predetermined luminance, a second reference pixel section configured to be driven to emit light when an amount of luminance degradation is to be detected, and a correcting unit configured to correct luminance degradation of effective pixels that contribute to display on the basis of a detection result of luminances of the first reference pixel section and the second reference pixel section.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: December 3, 2013
    Assignee: Sony Corporation
    Inventors: Hiroshi Hasegawa, Kazuo Nakamura, Katsuhide Uchino
  • Patent number: 8593383
    Abstract: A liquid crystal display has a substrate, data lines, scan lines, pixel units and a pre-charge circuit. The data lines are disposed on the substrate in a first direction. The scan lines are disposed on the substrate in a second direction substantially perpendicular to the first direction. The pixel units are respectively disposed at the intersections of the data lines and the scan lines. The pre-charge circuit includes a pre-charge potential, a pre-charge capacitor and a pre-charge switch. The pre-charge capacitor has a first electrode coupled to the pre-charge potential. The pre-charge switch has a first terminal for receiving a pre-charge signal, a second terminal coupled to one of the data lines, and a third terminal coupled to a second electrode of the pre-charge capacitor.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: November 26, 2013
    Assignee: AU Optronics Corporation
    Inventor: Chung-Chun Chen
  • Patent number: 8552986
    Abstract: In one embodiment, a scalable controller for a computer input area is provided with: a plurality of drive signal pads; a plurality of signal detection pads; a programmable memory to store an indication of active ones of the drive signal pads and signal detection pads; and control circuitry to identify user input with the computer input area by 1) driving active ones of the drive signal pads, and 2) reading active ones of the signal detection pads.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: October 8, 2013
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Chee-Heng Wong, Deng-Peng Chen
  • Patent number: 8552966
    Abstract: Disclosed is checking a drive state of a backlight lamp of a liquid crystal display device and notifying to an external entity whether it is normally driven in which level or is difficult to be normally driven.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: October 8, 2013
    Assignee: LG Display Co. Ltd.
    Inventors: Jae-Won Han, Jun-Hyeok Yang
  • Patent number: 8542177
    Abstract: A data driving apparatus includes a horizontal synchronization start signal generation circuit and data driving circuit. The horizontal synchronization start signal generation circuit generates a horizontal synchronization start signal using image data signals. The data driving circuit samples the image data signals in response to the horizontal synchronization start signal and supplies a plurality of data signals using the sampled image data signals in response to a load signal. The horizontal synchronization start signal generation circuit is disabled in response to the load signal.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: September 24, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Whee-won Lee
  • Patent number: 8542170
    Abstract: A display device includes a display panel having an adjustable refresh frequency, a data driver for receiving display data, generating driving voltages based on the display data, and driving the display panel to display images using the driving voltages, and a timing controller providing a timing control signal to the data driver. The timing control signal is generated according to the refresh frequency of the display panel. The data driver dynamically adjusts a setup time and a hold time of the data driver according to the timing control signal.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: September 24, 2013
    Assignees: Innocom Technology (Shenzhen) Co., Ltd., Chimei Innolux Corporation
    Inventors: Wei Guo, Sha Feng
  • Patent number: 8537114
    Abstract: A mouse device is operable with a variable button-pressing force. The mouse device includes a mouse base, a mouse case, a button disposed on the mouse case, a pressing plate contacted with the button, and the sliding member contacted with the pressing plate. The sliding member is partially protruded out of the mouse base, and movable with respect to the mouse base. When the sliding member is moved to a first position and contacted with a first touching part of the pressing plate, the force required for pressing the button is equal to a first downward external force. Whereas, when the sliding member is moved to a second position and contacted with a second touching part of the pressing plate, the force required for pressing the button is equal to a second downward external force.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: September 17, 2013
    Assignee: Primax Electronics Ltd.
    Inventor: Qin-Hua Ma
  • Patent number: 8531384
    Abstract: A driving method for local dimming of a Liquid Crystal Display (LCD) device and an apparatus using the same are disclosed.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: September 10, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Kyung-Joon Kwon, Dong-Woo Kim, Chang-Kyun Park
  • Patent number: 8519939
    Abstract: An LCD and a backlight module driving device and a method thereof are provided. The method is adapted to drive at least one backlight unit in a backlight module. The backlight unit is used for supplying a surface light source to an Nth area pixel of the LCD panel, where N is a positive integer. The method includes the following steps of first calculating a time of the Nth area pixel under a stable state in a frame period and then providing a control signal to drive the backlight unit when the Nth area pixel is under the stable state in the frame period.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: August 27, 2013
    Assignee: Au Optronics Corporation
    Inventors: Yueh-Han Li, Po-Tang Hsu, Chien-Ming Ko, Ching-Chou Yu
  • Patent number: 8493334
    Abstract: An optical input device has a display screen, a portion of the display screen being shielded from light by an operating member to implement input processing based on a plurality of input modes. The input device includes an input detection unit including a display unit that displays predetermined input information, and a control unit. The input detection unit detects an area and/or brightness of a light-shielded portion formed on the display screen by the operating member by approaching the display unit. The control unit provides display control of the display unit and input control on the basis of the detected area and/or brightness. The control unit compares the detected area and/or brightness with a predetermined threshold value to select a desired input mode from among the plurality of input modes.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: July 23, 2013
    Assignees: Sony Corporation, Sony Mobile Communications Japan, Inc.
    Inventors: Kouichiro Takashima, Tsutomu Takahashi, Satoshi Kushima, Hideki Okii, Shun Kayama, Yukiko Shimizu, Takashi Sawada