Patents Examined by Douglas M Wilson
  • Patent number: 9412305
    Abstract: A pixel circuit according to an embodiment includes: a capacitor; a first switching unit configured to initialize the capacitor in response to a first scan signal received from a first scan line; a second switching unit configured to receive a second scan signal from a second scan line disposed in a first direction from the first scan line, to receive a third scan signal from a third scan line disposed in a second direction opposite to the first direction from the first scan line, and to be turned on in response to one of the second scan signal and the third scan signal that is activated after the first scan signal is activated to store a data signal in the capacitor; and a driving transistor configured to provide a driving current to an OLED in response to the data signal stored in the capacitor.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: August 9, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventor: Chang-Ho Lee
  • Patent number: 9411472
    Abstract: In one embodiment, a method includes receiving, by a controller coupled to a touch sensor, a plurality of signals from a plurality of sense electrodes, the plurality of signals indicative of an amount of capacitance between the touch sensor and an external object. The method further includes accessing a stored threshold value, determining a strength of a charge return path between the touch sensor and a ground, and adjusting the stored threshold value based on the determined strength of the charge return path. The threshold value indicates a threshold magnitude of the signals from the plurality of sense electrodes to process as a touch by the external object.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: August 9, 2016
    Assignee: Atmel Corporation
    Inventors: Martin John Simmons, Darren Golbourn, Daniel Pickett
  • Patent number: 9396696
    Abstract: A liquid crystal display (“LCD”) device includes a display panel, a data driving part, and at least one first light-blocking part and at least one second light-blocking part. The display panel includes a plurality of pixels and a plurality of data lines. The pixels are arranged in a column direction and a row direction. At least one of the data lines extends in a zigzag shape along the column direction to be discontinuously disposed between two adjacent columns of the pixels. The at least one data line is electrically connected to two of the pixels that are adjacent in the row direction. The second light-blocking part is thinner than the first light-blocking part. The first light-blocking part and the second light-blocking are repeatedly disposed on an area between two adjacent columns of the pixels. The data driving part applies a data signal to the data lines.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: July 19, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sung-Man Kim, Hong-Woo Lee, Chang-Ho Lee, Eung-Gyu Lee, Yu-Jun Kim, Yu-Jin Kim, Jin-Suk Seo, Byung-Su Oh
  • Patent number: 9377882
    Abstract: A display device with an integrated touch screen and a method of driving the same are provided. In a method of driving a display device including an integrated touch screen, including a panel including a plurality of electrodes that are divided into n number of groups, where n is an integer greater than or equal to two, and a touch sensing unit, the method includes: applying data voltages to a plurality of pixels of the panel, during a high logic period of a horizontal sync signal, and applying, by the touch sensing unit, a touch scan signal to one of the n groups every n or more low logic periods of the horizontal sync signal, the touch scan signal being applied to each of the n groups at least one time, during one frame.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: June 28, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Sung Chul Kim
  • Patent number: 9379171
    Abstract: Disclosed herein is a display device including, a pixel array portion, a drive portion; and a power source wiring; the pixel array portion, at least a part of the drive portion configured to drive the pixel array portion and the power source wiring form a panel, the pixel array portion includes scanning lines disposed in rows, signal lines disposed in columns, and pixels disposed in matrix in portions where the scanning lines and the signal lines cross each other, respectively, and the drive portion includes a scanner portion configured to drive the pixels in a line-sequential manner through the scanning lines, and a signal portion configured to supply a video signal to each of the signal lines in correspondence to the line-sequential drive, so that an image is displayed on the pixel array portion.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: June 28, 2016
    Assignee: Sony Corporation
    Inventors: Tetsuo Minami, Yukihito Iida, Katsuhide Uchino
  • Patent number: 9373293
    Abstract: A display apparatus includes a source driver and a display panel. The source driver provides a plurality of pixel voltages which respectively correspond to a maximum gray-level voltage or a minimum gray-level voltage. The display panel includes a plurality of data lines, a plurality of pixel switches, a plurality of pixel capacitors, and a plurality of gray-level switches. The data lines are coupled to the source driver to receive the pixel voltages. Each pixel switch is respectively coupled to the corresponding data line to transmit the corresponding pixel voltage. Each pixel capacitor is respectively coupled between the corresponding pixel switch and a common voltage to receive the corresponding pixel voltage. Each gray-level switch is respectively coupled to the corresponding pixel capacitor in parallel and respectively receives a gray-level control signal. The gray-level switches regulate voltage drops across the pixel capacitors according to the corresponding gray-level control signals.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: June 21, 2016
    Assignee: Novatek Microelectronics Corp.
    Inventor: Chin-Hung Hsu
  • Patent number: 9343008
    Abstract: An organic light emitting diode (OLED) display includes: a substrate; and a red subpixel, a green subpixel, a blue subpixel, and a white subpixel arranged in a matrix of rows and columns on the substrate, wherein three different-colored subpixels selected from the red subpixel, the green subpixel, the blue subpixel, and the white subpixel form one pixel in which the three different-colored subpixels are simultaneously driven. Four red subpixels in the matrix enclose two green subpixels, two white subpixels, and one blue subpixel. Accordingly, the organic light emitting diode (OLED) display has a RGBW structure, and improves the luminance by the two white subpixels.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: May 17, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventor: Singh Madhusudan
  • Patent number: 9335871
    Abstract: The surface panel includes a transmissive resin layer and a sensor film closely attached to a back surface of the resin layer. The sensor film includes a base film, a frame-shaped decorative portion on a front surface of the base film, and a transmissive electrode layer and right and left wiring layers on a back surface of the base film. The sensor film is closely attached to and along the back surface of the resin layer. The right and left wiring layers are closely attached to the corresponding right and back-surface left portions. Consequently, the area that is allocated for the transmissive region and the electrode layer can be increased.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: May 10, 2016
    Assignee: ALPS ELECTRIC CO., LTD.
    Inventor: Sadao Kitano
  • Patent number: 9336726
    Abstract: A liquid crystal display device includes: a light emitting diode array unit including at least two groups of light emitting diode arrays for emitting light; a light emitting diode driving unit for supplying at least two pulse width modulation signals having different phases from each other to the at least two groups of light emitting diode arrays, respectively; a liquid crystal display panel for displaying images using the light from the light emitting diode array unit; and a timing controller for controlling the light emitting diode driving unit and the liquid crystal display panel.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: May 10, 2016
    Assignee: LG Display Co., Ltd.
    Inventor: Sun-Ung Kim
  • Patent number: 9103858
    Abstract: There is provided a capacitance sensing apparatus including a driving circuit unit applying a driving signal to a first capacitor at a predetermined interval; and a sensing circuit unit sensing a change in capacitance generated by the first capacitor based on the driving signal, in which a portion of a plurality of switches included in the sensing circuit unit operate at a first interval, the same as the interval of the driving signal, and remaining switches among the plurality of switches operate at a second interval, different from the first interval.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: August 11, 2015
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Moon Suk Jeong, Byeong Hak Jo, Kyung Hee Hong, Yong Il Kwon, Tah Joon Park
  • Patent number: 9099023
    Abstract: A display driver circuit, including a source driver configured to drive source lines of a display panel, and a timing controller configured to transfer image data to the source driver and to control the source driver such that the transferred image data is displayed via the display panel, the timing controller also being configured to transfer to the source driver a control signal and a test pattern, which are used to test a bit error rate, and the source driver being configured to test the bit error rate of the transferred test pattern in response to the transferred control signal.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: August 4, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-Hoon Baek, JaeYoul Lee
  • Patent number: 9079384
    Abstract: Touch sensor panels typically include a plurality of layers that can be stacked on top of each other. When the touch sensor panel is used in a bright environment, incident light can hit the interfaces between those layers of the stackup having mismatched refractive indices and can reflect off those interfaces. The light reflected from those interfaces can give rise to the appearance of fringes on the touch sensor panel, which can be visually distracting. In order to reduce the appearance of these fringes, embodiments of the disclosure are directed to the addition of an index matching passivation layer between a conductive layer of traces and an adhesive layer in the touch sensor panel stackup.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: July 14, 2015
    Assignee: Apple Inc.
    Inventors: Chun-Hao Tung, EnkhAmgalan Dorjgotov, Masato Kuwabara, Sunggu Kang, Cheng Chen, John Z. Zhong
  • Patent number: 9041700
    Abstract: The stereoscopic display device has a display panel, a barrier liquid crystal panel disposed on the display panel, and a driving circuit for driving the display panel and the barrier liquid crystal panel, in which the frame frequency of the display panel and the alternating frequency of the barrier liquid crystal panel are different, the barrier liquid crystal panel is driven by a driving voltage input from the driving circuit, the driving circuit has an inverter circuit for outputting the driving voltage, independently controls a p-type transistor and an n-type transistor in the inverter circuit, and has time periods in which both the p-type transistor and the n-type transistor are turned off when the driving voltage is switched from a high level to a low level or a low level to a high level.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: May 26, 2015
    Assignee: JAPAN DISPLAY INC.
    Inventors: Takeshi Shibata, Yoshihiro Kotani, Shouji Nagao
  • Patent number: 9013373
    Abstract: An image display device comprises a light emitting element; a driver which has a control terminal, a first terminal and a second terminal, and which controls the current flowing between the first terminal and the second terminal by the voltage between the control terminal and the first terminal, to control the light emission of the light emitting element; a first capacitor having a first electrode and a second electrode, the first electrode being connected directly or indirectly to the control terminal of the driver, the second electrode being connected directly or indirectly to a signal line supplying the potential corresponding to an image data; and a second capacitor connected electrically in series to the first capacitor during a writing period while the image data is written to the first capacitor through the signal line.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: April 21, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Shinji Takasugi, Kaoru Kusafuka
  • Patent number: 8976162
    Abstract: The electrophoretic display device includes: an electrophoretic layer which is disposed between first and second substrates disposed to face each other and has a plurality of first electrically-charged particles colored into a first color, a plurality of second electrically-charged particles colored into a second color, and a dispersion medium which retains the first and second electrically-charged particles; first and second pixel electrodes provided on the first substrate; an opposite electrode provided on the second substrate; and a reflective electrode provided at a position on the first substrate side rather than on the electrophoretic layer, wherein the first electrically-charged particle has permeability in a first wavelength region and absorbability in the other wavelength regions, and the second electrically-charged particle has reflectivity in a second wavelength region and absorbability in the other wavelength regions.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: March 10, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Takashi Sato
  • Patent number: 8941630
    Abstract: An element-side substrate includes an element array area, an RGB switch circuit, and a source driver IC. The center of a terminal group coupled to video signal lines of the source driver IC is shifted (displaced) by a distance “g” leftward from the center of the RGB switch circuit, thereby making it possible to lengthen portions of bent left video signal lines that extend in the top-bottom direction while shortening portions of bent right video signal lines that extend in the top-bottom direction. As a result, it is possible to shorten a distance “h” between the source driver IC and the RGB switch circuit while fully avoiding interference with a large area occupied by left control lines and also avoiding interference with a small area occupied by right control lines.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: January 27, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yohsuke Fujikawa
  • Patent number: 8941629
    Abstract: A scan driver for an organic light emitting display includes logic circuitry to receive a plurality of start pulses and either a first clock or a second clock that is an inversion of the first clock and to generate one or more pulse signals as scan signals for driving the sub-pixels of the organic light emitting display panel, where one or more of the pulse signals are delayed by ½ horizontal time from at least another one of the pulse signals.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: January 27, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Hyemin Park, Sangho Yu, Hyunwook Kim
  • Patent number: 8854350
    Abstract: Provided is a liquid crystal display for improving side visibility by calculating a representative value for image data and correcting at least one of a storage voltage Vcst, a reference voltage Vref, and a lookup table LUT according to the calculated representative value. Further, a histogram analysis block is formed inside or outside a signal controller and corrects at least one of the storage voltage Vcst, the reference voltage Vref, and the lookup table LUT based on the histogram analysis block.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: October 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Won Jeong, Su-Bin Park, Woo-Jin Jung, Woo-Young Lee, Kang-Hyun Kim, Duc-Han Cho
  • Patent number: 8754914
    Abstract: A testing circuit of a dual gate cell panel and a color display method of the dual gate cell panel. There are many data lines and scan lines in the dual gate cell panel, and the data lines are divided into three groups, and the scan lines are divided into two groups. The data lines or scan lines of each group are connected respectively to metal wires with a test pad each. When an appropriate signal is inputted to each test pad, the dual gate cell panel shows red, green and blue colors individually, so that defects of the dual gate cell panel can be detected accurately to avoid any unnecessary waste on the defective dual gate cell panel incurred in the subsequent manufacturing processes.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: June 17, 2014
    Assignee: Hannstar Display Corporation
    Inventor: Tai-Fu Lu
  • Patent number: 8743099
    Abstract: A display adjusting device adapted for adjusting display parameter(s) of a display unit includes a light sensing unit for sensing an environmental illumination associated with the display unit; an image capturing unit for capturing an image of a user in front of the display unit; and a controlling unit, electrically connected to the display unit, the light sensing unit and the image capturing unit, for selectively adjusting a first display brightness of the display unit to a second display brightness according to the environmental illumination, calculating a distance between eyes of the user and the display unit according to the image, and selectively adjusting the second display brightness to a third display brightness according to the distance.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: June 3, 2014
    Assignee: Wistron Corporation
    Inventor: Margaret-Peyi Lin