Patents Examined by Chanh Nguyen
  • Patent number: 8994673
    Abstract: A display device with an integrated touch screen according to an embodiment, includes a display panel including a touch screen provided in an active area of the display panel, and a display driver circuit provided in an inactive area of the display panel, the touch screen including a plurality of driving electrodes, each of the driving electrodes including a plurality of sub driving electrodes positioned in the active area of the display panel but electrically connected to each other in the inactive area of the display panel, the touch screen further including a plurality of sensing electrodes disposed between the sub driving electrodes and formed in the active area of the panel, and the display driver circuit configured to apply a common voltage to the driving electrodes and the sensing electrodes or a touch driving voltage to the driving electrodes according to a driving mode of the display panel.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: March 31, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: SangSoo Hwang, BuYeol Lee, TaeHwan Kim, YoungJoon Lee, SeongMo Seo
  • Patent number: 8994619
    Abstract: A display device includes: a display unit including pixels coupled to scan lines for transmitting scan signals, data lines for transmitting data signals, and light emission control lines for transmitting light emission control signals; a scan driver; a data driver; and a light emission driver. Each pixel includes: an OLED; a driving transistor to transmit a driving current corresponding to a data signal to the OLED; a first transistor to transmit the data signal to the driving transistor according to a first scan signal; a second transistor to apply a first power source voltage to a first electrode of the driving transistor according to a second scan signal, during an initialization period for initializing a gate electrode voltage of the driving transistor; and a capacitor including a first electrode coupled to a gate electrode of the driving transistor and a second electrode coupled to a first power source supply.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: March 31, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jin-Tae Jeong
  • Patent number: 8963906
    Abstract: A display device and a method for driving the same are disclosed. The disclosed display device includes a display panel for displaying an image corresponding to a plurality of data signals transferred via a plurality of data lines, a data driver for driving the plurality of data lines, a timing controller for controlling driving timing of the data driver, and a charge sharing unit comprising a first charger allocated to a first data line group of the plurality of data lines, and a second charger allocated to a second data line group of the plurality of data lines, the charge sharing unit selectively performing charging and discharging operations among the first data line group, the first charger, the second data line group and the second charger under control of the timing controller.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: February 24, 2015
    Assignee: LG Display Co., Ltd.
    Inventor: Dae-Seok Oh
  • Patent number: 8963822
    Abstract: A display apparatus includes a timing controller, a data driver, and display panel. The timing controller outputs a plurality of image signals, a first control signal, and a second control signal. The data driver converts the image signals to first voltages in response to the first control signal, outputs the first voltages, and outputs a second voltage swinging between two different voltage levels in at least one frame unit in response to the second control signal. The display panel includes a plurality of pixels, where each receives a corresponding one of the first voltages and the second voltage to display an image.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: February 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun-Sik Yoon, Heebum Park, Seungsoo Baek
  • Patent number: 8957841
    Abstract: A liquid crystal display includes a TFT-LCD module which comprises a pixel for showing grayscale signal, a data line, and a first switching unit for controlling operation of the pixel. The pixel includes a main sub-pixel and a secondary sub-pixel. The TFT-LCD module further includes a pair of pixel capacitors and a second switching unit. The sub-pixel comprises a first sub-pixel and a second sub-pixel, and the TFT-LCD module further comprises a third switching unit for controlling operation of the second sub-pixel. The present invention can reduce crosstalk when showing a 3D image and keep the brightness of 2D images by controlling the operation of the second sub-pixel.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: February 17, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Hung-lung Hou, Cheng-ming He
  • Patent number: 8952884
    Abstract: Disclosed is a suspended particle device having a higher response speed of particles upon shutdown of the device. The suspended particle device includes a first substrate; a first electrode arranged on a surface of the first substrate; a second substrate; a second electrode arranged on a surface of the second substrate; and a suspension arranged between the first substrate and the second substrate, in which the suspension includes particles and a disperse medium, the particles are dispersed in the disperse medium, an orientation of the particles is controlled by an alternate-current voltage to be applied between the first electrode and the second electrode, and “a” which represents a frequency of an alternate-current voltage in a driving period is greater than “b” which represents a frequency of an alternate-current voltage in a shutdown period.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: February 10, 2015
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Shunsuke Mori, Yoshiro Mikami
  • 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: 8947329
    Abstract: An organic light emitting display includes a scan driver for driving scan lines and emission control lines, a data driver for driving data lines, a display unit including pixels at crossing regions of scan lines and data lines, first power source lines coupled to a first power source configured to supply a first voltage and coupled to pixels in columns, horizontal power source lines extending in a direction parallel with scan lines and coupled to pixels in rows, and a second power source line coupled to the horizontal power source lines and to a second power source configured to supply the same voltage as the first power source, each of the pixels being configured to store a voltage corresponding to voltages of the second power source and a data signal and to control an amount of current that flows from the first power source in accordance with the stored voltage.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: February 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Sang-Moo Choi
  • 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: 8947326
    Abstract: A pixel structure, driving method thereof and self-emitting display using the same is disclosed. The pixel structure includes four transistors and two capacitors to compensate illuminating effect in both of a non-synchronous display mode and a synchronous display mode.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: February 3, 2015
    Assignee: Au Optronics Corp.
    Inventors: Hua-Gang Chang, Tsung-Ting Tsai
  • Patent number: 8941577
    Abstract: A first gate driver that drives a gate bus line corresponding to a first sub-pixel section and a second gate driver that drives a gate bus line corresponding to a second sub-pixel section are monolithically formed inside a panel. A shift register inside the second gate driver has a configuration where stages corresponding to respective rows and dummy stages each disposed for each row, are connected in series with one another. In such a configuration, a frequency of a clock signal for controlling an operation of the second gate driver is made twice as large as a frequency of a clock signal for controlling an operation of the first gate driver.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: January 27, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Masanori Ohara
  • Patent number: 8941574
    Abstract: A liquid crystal display includes: a liquid crystal display panel including a plurality of data lines and a plurality of gate lines crossing each other; a first source drive IC for outputting a data voltage to the data lines and inverting the polarity of the data voltage in response to a first polarity control signal; a second source drive IC for outputting the data voltage to the data lines and inverting the polarity of the data voltage in response to a second polarity control signal; and a timing controller for generating the first and second polarity control signals in the same phase when the source drive ICs output data voltages whose polarity is inverted by horizontal 1-dot inversion and generating the first and second polarity control signals in the opposite phase to each other when the source drive ICs output data voltages whose polarity is inverted by horizontal 2-dot inversion.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: January 27, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Jongwoo Kim, Hyuntaek Nam, Myungkook Moon
  • Patent number: 8937587
    Abstract: A temperature estimating apparatus, which is provided for a backlight having a plurality of light source blocks each having one light source or a plurality of light sources so that light emission of the light source of each of the light source blocks can be regulated independently, comprises an acquiring unit which acquires a luminance of the light source for each of the light source blocks; a temperature sensor which measures a temperature of at least any one of an internal and external temperature of a casing of the image display apparatus having the backlight; and an estimating unit which estimates a temperature of the light source for each of the light source blocks on the basis of a measured value obtained by the temperature sensor and a luminance value of the light source of each of the light source blocks acquired by the acquiring unit.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: January 20, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tatsuya Nakajima
  • 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: 8928565
    Abstract: A method for driving an OLED panel includes the following steps. An image signal is inputted to a power control unit, wherein the power control unit includes a calculator and a power control look-up table. A display loading ratio is calculated by the calculator according to the image signal, wherein the power control unit can find an emitting time ratio by the power control look-up table corresponding to the display loading ratio, the emitting time ratio can be transformed to an emitting time signal, and the emitting time signal can be inputted to the OLED panel so as to control the power consumption of the OLED panel.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: January 6, 2015
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chun-Chieh Chiu, Shih-Meng Chang, Chien-Hung Chen
  • Patent number: 8922474
    Abstract: A method for modifying an image to be displayed on a display includes receiving an image to be displayed on the display having a backlight and a transmissive panel. A backlight signal is provided to the backlight for causing the backlight to selectively illuminate different portions of the backlight with different characteristics. The characteristics include at least one of a different color and a difference luminance. A panel signal is provided to the panel for causing the transmissive panel to selectively change its transmittivities. At least one of the backlight signal and the panel signal are modified in a manner to reduce off-axis artifacts in selected regions of the display.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: December 30, 2014
    Assignee: Sharp Laboratories of America, Inc.
    Inventor: Louis Joseph Kerofsky
  • Patent number: 8922469
    Abstract: A display panel includes a first sub-pixel electrode and a second sub-pixel electrode alternating with each other to form a horizontal electric field, a first data line transmitting a first data voltage to the first sub-pixel electrode, and a second data line transmitting a second data voltage to the second sub-pixel electrode, wherein the second sub-pixel electrode is formed to overlap the first and second data lines.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: December 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-Chul Jung, Chong-Chul Chai, Mee-Hye Jung
  • Patent number: 8917232
    Abstract: A display apparatus according to the present invention comprises a display panel having a transmittance that can be changed for each frame of an input video signal, an adjusting unit that adjusts a timing at which the transmittance of the display panel changes, and a backlight unit that emits light in a period corresponding to a period of an applied alternating-current voltage, wherein the adjusting unit adjusts the timing at which the transmittance of the display panel changes on the basis of the period of the alternating-current voltage.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: December 23, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Noriaki Suzuki
  • Patent number: 8912994
    Abstract: An electronic apparatus system is provided. The electronic apparatus system includes a register, a display mode computation unit, a display device and a control circuit. The register stores image information having a data input refresh frequency. The display mode computation unit generates a display mode control signal by computation based on an image characteristic categorization of the image information. The display device includes a display panel having a plurality of pixel units. The control circuit controls a display mode and a drive mode of the display panel according to the display mode control signal to further adjust a display refresh frequency of the display panel.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: December 16, 2014
    Inventor: Hung-Ta Liu
  • 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