Patents Examined by Chanh Nguyen
  • Patent number: 9104239
    Abstract: Provided are a display device and a method for controlling the same. The display device comprises a display unit, and a controller configured to perform predetermined functions according to a distance with a external object in response to an identical gesture made by the external object.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: August 11, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Taehyeong Kim, Sangki Kim, Soungmin Im
  • Patent number: 9105230
    Abstract: An organic light emitting diode (OLED) display is disclosed. In one embodiment, the OLED display includes a panel including pixels which are configured to control an amount of current that flows from a first power source to a second power source to generate an image of predetermined brightness. The display may also include at least one first power source line formed on a top of the panel and at least one second power source line positioned on a bottom of the panel to face the first power source line. The display may further include a first switch configured to alternately supply the first power source to the first power source line and the second power source line.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: August 11, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki-Wook Kim, Wang-Jo Lee, Dae-Hyun Noh
  • Patent number: 9098178
    Abstract: An image forming apparatus 1 of the present disclosure has a display unit 162 capable of displaying a plurality of objects such as small images and a touch detection unit 164 which meets multi-touch, these units being formed on an operation panel unit 6. A touched shape determination unit 81 calculates a touched area from touch coordinates detected by the touch detection unit 164. Then, the touched shape determination unit 81 calculates a touched shape like line strip from the touched area. A selection area setting/moving unit 82 calculates an object selection area which is a closed touched shape and selects and moves all objects which overlap the object selection area.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: August 4, 2015
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Tetsuro Kitamura
  • Patent number: 9099045
    Abstract: Disclosed herein is a backlight apparatus for controlling a backlight wherein light emitting devices for emitting light of red, green and blue and a switching device for switching on or off light emission of the light emitting devices are provided for each of a plurality of divisional regions formed by division of a lighting region such that the light emission luminance can be varied for each of the regions, the backlight apparatus including: light emission luminance control means; current value storage means; and current control means.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: August 4, 2015
    Assignee: Thomson Licensing
    Inventors: Mitsunori Ueda, Tadashi Morimoto, Minoru Mizuta
  • Patent number: 9093031
    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.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: July 28, 2015
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Louis Joseph Kerofsky, Benjamin John Broughton
  • Patent number: 9082357
    Abstract: Each image signal line S is connected alternately to a plurality of sub-pixels P positioned on one side of the image signal line S and a plurality of sub-pixels P positioned on the other side. During one frame period, image signals having either one of the positive and negative polarities are input to the first, third, fourth, and sixth image signal lines S1, S3, S4, and S6 of the eight image signal lines S1 to S8 that constitute a unit array of the image signal lines during one frame period, while image signals having the other polarity are input to the remaining image signal lines S2, S5, S7, and S8. According to this liquid crystal display device, it is possible to prevent flicker in image and to prevent the common electrode position from becoming different from the base potential, while preventing increase of power consumption.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: July 14, 2015
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO. LTD
    Inventors: Teruhisa Nakagawa, Yoshinori Aono, Masahiro Ishii
  • Patent number: 9070337
    Abstract: Provided is a display device including a driver circuit for controlling supply of charges to an array of cells capable of storing the charges. In the driver circuit, a preceding electrically connecting part (SW221) controlled by a clock signal (CLK1) electrically connects an output signal line of a first circuit (211) having a positive polarity which is a potential higher than a reference potential and an output signal line of a second circuit (212) having a negative polarity which is a potential lower than the reference potential. After a predetermined time period has elapsed, a subsequent electrically connecting part (SW222) controlled by a clock signal (CLK2) electrically connects an output signal line of a third circuit (213) having the positive polarity and an output signal line of a fourth circuit (214) having the negative polarity.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: June 30, 2015
    Assignees: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD
    Inventors: Toshiki Misonou, Yasuhiko Yamagishi
  • Patent number: 9070332
    Abstract: A display device includes: an insulation substrate; a plurality of gate lines on the insulation substrate and divided into a first group and a second group; a plurality of data lines insulated from and intersecting the gate lines; a gate driver which applies a gate-on voltage to the gate lines and operates in one of a first mode and a second mode; and a data driver which applies a data voltage to the data lines, where the first group and the second group of the gate lines are applied with the gate-on voltage when the gate driver is in the first mode, and where the first group of the gate lines is applied with the gate-on voltage and the second group of the gate lines is in an off state when the gate driver is in the second mode.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: June 30, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ji-Sun Kim, Chong Chul Chai, Yeong-Keun Kwon, Young-Soo Yoon, Soo-Wan Yoon
  • Patent number: 9069412
    Abstract: Provided is a display device having a photodetecting element in a pixel, and having an input function that is not dependent on light environments. This is a display device having an optical sensor in a pixel region. The optical sensor includes a first sensor pixel circuit that outputs a sensor signal corresponding to electric charges accumulated during an accumulation period in an ON time of a light source for the sensor; and a second sensor pixel circuit that that outputs a sensor signal corresponding to electric charges accumulated during an accumulation period in an OFF time of the light source. A sensor driving circuit for driving the first sensor pixie circuit and the second sensor pixel circuit supplies reset signals (RST1, RST2) to the first sensor pixel circuit and the second sensor pixel circuit, respectively, during vertical flyback periods in pixel display in the pixel region.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: June 30, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kohei Tanaka, Yasuhiro Sugita, Kazuhiro Maeda, Hiroaki Sugiyama
  • Patent number: 9047810
    Abstract: The present disclosure provides a circuit for discharging parasitic capacitance in a display panel with common-anode topology having a plurality of light emitters, as well as a circuit for charging parasitic capacitance in a display panel with common-cathode topology. In the common-cathode topology, the circuit includes a three-terminal device having a gate, a source, and a drain, wherein one of the source and the drain is electrically coupled to a common cathode of the light emitters, and a mechanism for controlling the three-terminal device, the mechanism being electrically coupled to the gate. Shortly after a previously selected light emitter is unselected, the mechanism turns on the three-terminal device to form a conductive path between the source and the drain. The mechanism turns off the three-terminal device after a voltage at the common cathode is increased to a predetermined voltage level or after a maximum period of time lapses.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: June 2, 2015
    Assignee: SCT TECHNOLOGY, LTD.
    Inventors: Eric Li, Yutao Chen, Jianxin Xue, Wenjie Yang, Shoulin Li, Chun Lu, Zhifeng Wen, Shean-Yih Chiou, Shang-Kuan Tang, Shahnad Nadershahi
  • Patent number: 9035864
    Abstract: A gate signal line drive circuit and a display device which realize the suppression of a threshold voltage of an element which is used for a long time are provided. With respect to elements to which a HIGH voltage is applied for a long time, a plurality of elements are connected parallel to each other and are controlled such that at least any one of the plurality of elements is driven by a switching element, and a period during which the element is not driven is set longer than a frame display period.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: May 19, 2015
    Assignees: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Takahiro Ochiai, Mitsuru Goto, Youzou Nakayasu, Yuki Okada, Naoki Takada
  • Patent number: 9030400
    Abstract: A liquid crystal display, including: pixels; a signal controller receiving an input image signal and an input control signal and outputting a processing image signal and a control signal; and a data driver changing the processing image signal to data voltage on the basis of the control signal to supply the data voltage to the pixel and sharing charges of odd channel data voltage of an odd channel and even channel data voltage of an even channel which have different polarities on the basis of a temperature.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: May 12, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Whee-Won Lee, Jae Hoon Lee, Young-Su Kim
  • Patent number: 9030399
    Abstract: A gate driver for driving a TFT-LCD panel includes a number of gate-driver circuits arranged in groups and stages. Each gate-driver circuit has a main driver and an output section. The main driver is used to provide a charging signal to the output section which has two or more output circuits. Each of the output circuits is configured to provide a gate-line signal in response to the charging signal and a clock signal. The gate-driver circuit uses fewer switching elements, such as thin-film transistors, than the conventional circuit. When the gate driver is integrated in a TFT-LCD display panel and disposed within the periphery area around the display area, it is desirable to reduce or minimize the number of switching elements in the gate driver so that the periphery area can be reduced.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: May 12, 2015
    Assignee: AU Optronics Corporation
    Inventors: Chien-Chang Tseng, Kuang-Hsiang Liu, Sheng-Chao Liu, Che-Chia Chang, Ling-Ying Chien
  • Patent number: 9019264
    Abstract: In one unit period of a display period, each first pair of scanning lines is selected and a gray scale potential corresponding to pixels of one scanning line of the first pair of scanning lines is supplied to each signal line. In another unit period, each second pair of scanning lines is selected and a gray scale potential corresponding to pixels of one scanning line of the second pair of scanning lines is supplied to each signal line.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: April 28, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Akihiko Ito
  • Patent number: 9013381
    Abstract: Disclosed is an organic light emitting device which includes a first pixel displaying red, a second pixel displaying green, a third pixel displaying blue, and a fourth pixel displaying blue and forming a dot along with the first pixel, the second pixel, and the third pixel. The first to fourth pixels include a switching element and an organic light emitting element connected to the switching element, and the sum of the areas of the first to fourth pixels is substantially the same as the area of the dot.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: April 21, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyo-Seok Kim, Kyong-Tae Park
  • Patent number: 9013390
    Abstract: A gate driver includes stages coupled to each other and outputting gate signals. Each stage includes a node driver, a pull-up unit, a node controller, a first node stabilizer, and a pull-down unit. The node driver outputs a first voltage or a second voltage to a first node in response to a first or a second input signal. The pull-up unit pulls an output terminal to high in response to a voltage of the first node. The node controller outputs an on-voltage to a second node in response to a first clock signal from a third node or a second clock signal from a fourth node. The first node stabilizer stabilizes the first node to an off-voltage in response to a voltage of the second node. The pull-down unit pulls the output terminal to low in response to the voltage of the second node or the second input signal.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: April 21, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Wook Yang, Sang-Jae Yeo
  • Patent number: 9013395
    Abstract: An electrophoresis display device that reduces power consumption of the device. The electrophoresis display device reduces power consumption by stopping the output of driving circuits that drive a display panel during a stabilization period following an image update period of the device.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: April 21, 2015
    Assignee: LG Display Co., Ltd.
    Inventor: Sunghoon Lee
  • Patent number: 9001018
    Abstract: A liquid crystal display wherein power consumption of a gate drive circuit is reduced and a method of driving the same are disclosed. The liquid crystal display includes a liquid crystal panel having pixel regions defined by intersection of a plurality of gate lines and a plurality of data lines, a timing controller to output a clock pulse selectively having a first voltage level, second voltage level and third voltage level of different voltage levels and a data control signal, a gate drive unit to drive the gate lines in response to the clock pulse, and a data drive unit to drive the data lines in response to the data control signal.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: April 7, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Hak-Su Kim, Mi-Kyung Kim
  • Patent number: 9001085
    Abstract: A touch screen apparatus includes a mirror part arranged on a side of a quadrilateral touch area, retroreflectors arranged on remaining three sides of the touch area, first and second light transmitting and receiving parts, each being disposed on each of two edges formed by one of the retroreflectors and emitting light to the touch area and detecting reflected light out of the emitted light by the mirror part and the retroreflectors, an angle extracting part calculating a plurality of light emitting angles for a location from which no reflected light is received, by at least one of the first and second light transmitting and receiving parts, and a coordinate generating part calculating a coordinate pair of a location in which light paths corresponding to the plurality of light emitting angles calculated by the angle extracting part intersect with each other.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: April 7, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Joo Young Ha, Sun Mi Sin, In Cheol Chang, Jae Kwang Lee
  • Patent number: 8994637
    Abstract: An image display system includes a gate driving circuit and a data driving circuit. The gate driving circuit generates gate driving signals to drive pixels in a pixel array. The data driving circuit generates data driving signals to provide data to the pixels. At least one of the gate and data driving circuits includes a shift register. The shift register includes flip-flops coupled in serial. Each flip-flop generates output signals in response to an input signal, and is reset in response to a reset signal. One of the flip-flops receives a first output signal of a last stage flip-flop as the reset signal thereof, and at least one flip-flop following the flip-flop receiving the first output signal of the last stage flip-flop receives a second output signal of the flip-flop receiving the first output signal of the last stage flip-flop as the reset signal thereof.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: March 31, 2015
    Assignees: Innocom Technology (Shenzhen) Co., Ltd., Innolux Corporation
    Inventors: Sheng-Feng Huang, Shih-Chien Feng, Ting-Yao Chu