Patents Examined by Chanh Nguyen
  • Pixel and an organic light emitting display device using the same
    Patent number: 8803770
    Abstract: A pixel includes an OLED between first and second power supplies; a first transistor between the first power supply and the OLED, including a gate electrode connected to a first node; a second transistor between the first transistor and a data line, including a gate electrode connected to a current scanning line; a third transistor between the first transistor and the first node, including a gate electrode connected to the current scanning line; a fourth transistor between the first transistor and the OLED, including a gate electrode connected to a light emitting control line; a fifth transistor between the second or third power supply and the first node, including a gate electrode connected to a previous scanning line; a sixth transistor between the second or third power supply and the fourth transistor, including a gate electrode connected to the previous scanning line.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: August 12, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Tae Jeong, Shingo Kawashima
  • Liquid crystal display device capable of reducing number of output channels of data driving circuit
    Patent number: 8803778
    Abstract: A liquid crystal display device comprises: a display panel having a pixel array comprising a first group of cells and a second group of cells and configured to share data lines with cells of the first group adjacent in extension direction of the gate lines; a data driving circuit comprising a latch array, wherein the latch array temporally separates first group data to be applied to the liquid crystal cells of the first group and second group data to be applied to the liquid crystal cells of the second group according to data rendering control signals, and outputs the first group data earlier by about ½ horizontal period than the second group data.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: August 12, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Hyunchul Kim
  • Display device with display panel and backlight
    Patent number: 8797245
    Abstract: A projecting portion is formed on first and second side walls of the inner frame parallel to two sides of the non-overlapping region of the first substrate which intersect with one side of the non-overlapping region of the first substrate. The projecting portion of the inner frame has an opening portion. The lower frame has an opening portion through which the projecting portion of the inner frame penetrates. The projecting portion of the inner frame penetrates the opening portion of the lower frame and projects to a side of the lower frame opposite to the display panel. A protruding portion is formed on the casing correspondingly to the projecting portion of the inner frame. The inner frame is fixed to the casing by making an opening portion formed in the projecting portion of the inner frame engage with the protruding portion of the casing.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: August 5, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hiroshi Ito, Kazunori Ojima, Takeshi Kaneki, Atsushi Fukai
  • Liquid crystal display device, and timing controller and signal processing method used in same
    Patent number: 8797250
    Abstract: A liquid crystal display device is provided which is capable of reducing EMI (ElectraMagnetic Interference) noises while simultaneously responding to requirements for the high-speed transmission of image data, miniaturization and thinning of a signal processing board. A timing controller outputs, in accordance with an input data signal and input clock signal, a data line driving circuit controlling signal, internal data signal, internal clock signal to a data line driving circuit and outputs a scanning line driving circuit controlling signal to a scanning line driving circuit. The timing controller has a clock signal frequency setting mode in which a frequency of each of clock signals is set to a different value and the clock signals are supplied to the data line driving circuits and other data line driving circuits in one region and another region.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: August 5, 2014
    Assignee: NLT Technologies, Ltd.
    Inventor: Shinji Ota
  • Touch sensing apparatus and method using different modulated driving signals
    Patent number: 8791907
    Abstract: A touch sensing apparatus utilizes the characteristics of orthogonal vectors is disclosed. A random spread spectrum (RSS) signal or a periodic wave is used to modulate a driving signal so as to driving a row of a sensing array, and the RSS signal or periodic wave is also use to extract touch information of a node from a sensing signal measured from a column of the sensing array. The node is an intersection of the driven row and the measured column. When different RSS signals and/or periodic waves are used to drive multiple rows simultaneously, multipoint touching information can be obtained from the same sensing signal at the same time by respectively using the RSS signals and/or periodic waves to extract touching information of multiple points which are the intersections of the driven rows and the measured column.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: July 29, 2014
    Assignee: U-Pixel Technologies Inc.
    Inventor: Hung Wei Wu
  • Projection touch system for detecting and positioning object according to intensity different of fluorescent light beams and method thereof
    Patent number: 8791926
    Abstract: A projection touch system configured for detecting a position of a touch object and a projection touch method thereof are provided. The projection touch system includes an invisible light source, a projection panel and a light detector. The projection panel includes a transparent plate and a fluorescent film. An invisible light beam emitted by the invisible light source scans back and forth on the projection panel. A first fluorescent light beam and a second fluorescent light beam are emitted from the fluorescent film excited by the invisible light beam. When the touch object is touched to the projection panel, a portion of the invisible light beam is reflected to the fluorescent film, and the second fluorescent light beam is emitted. The light detector detects the second fluorescent light beam relative to the first fluorescent light beam by an intensity level to determine the position of touch object.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: July 29, 2014
    Assignee: Lite-On Technology Corporation
    Inventor: Min-I Hung
  • Liquid crystal display capable of rendering video data in accordance with a rendering structure of a double rate driving panel
    Patent number: 8791892
    Abstract: A liquid crystal display includes a liquid crystal display panel having a pixel array including a first group of liquid crystal cells connected to odd-numbered gate lines and a second group of liquid crystal cells connected to even-numbered gate lines and a data driving circuit including a latch array. Each liquid crystal cell of the second group shares a data line with one liquid crystal cell of the first group adjacent to the liquid crystal cell of the second group in an extension direction of the gate lines. The latch array delays only second group data to be applied to the liquid crystal cells of the second group among digital video data for one horizontal line by about one half horizontal period in response to a data rendering control signal.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: July 29, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Minki Kim, Jinsung Kim, Hayoung Ji
  • Display device and method for controlling gate pulse
    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
  • Control apparatus and control method for controlling panel module including touch panel and display panel by referring to level transition of at least one driving signal
    Patent number: 8786558
    Abstract: A control apparatus for controlling a panel module including a touch panel and a display panel is provided. The control apparatus includes: a display driver, coupled to the display panel, for controlling display operations of the display panel according to a plurality of driving signals; and a touch controller, coupled to the touch panel and the display driver, for referring to a level transition of at least one driving signal of the driving signals to generate a touch control signal corresponding to a touch sensing output generated by the touch panel.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: July 22, 2014
    Assignee: Himax Technologies Limited
    Inventors: Ming-Cheng Chiu, Yi-Long Yang
  • Photosensor operating in accordacne with specific voltages and display device including same
    Patent number: 8780101
    Abstract: By reducing the potential drop of a storage node that occurs due to feedthrough, the capacitance of a storage capacitor is reduced and sensor sensitivity is improved. In a photosensor, the first terminal of a storage capacitor (C2) and the gate of a MOS transistor (M1), which outputs a signal in accordance with the potential of a storage node (N2), are connected to the storage node (N2). A forward biased pulse voltage is supplied to the anode of a first photodiode (DS) in a reset period, and a reverse biased voltage is supplied to the anode of the first photodiode in a storage period and a readout period. A reverse biased voltage is supplied to the anode of a second photodiode (DM) in all operation periods.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: July 15, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Sachio Tsujino, Yousuke Nakagawa, Kazuhiro Maeda, Ichiroh Shiraki, Hiroaki Sugiyama, Nobuhiro Kuwabara
  • Retractable mouse structure
    Patent number: 8780044
    Abstract: A mouse structure includes a housing and first and second sliding apparatuses. The housing has an accommodating portion and an opening The first sliding apparatus includes a base board and a sliding element, the base board being fixedly disposed in the accommodating portion, and the sliding element being slidably mounted on the base board. The second sliding apparatus is slidably disposed in the accommodating portion and includes a main body and a reacting portion connecting the main body, the main body being capable of sliding in and out of the accommodating portion from the opening. When the main body slides out of the opening, the sliding element is concurrently and separately pulled by the reacting portion to the first position, and when the main body slides into the accommodating portion, the sliding element is concurrently and separately pushed by the reacting portion to the second position.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: July 15, 2014
    Assignee: Cheung Uei Precision Industry Co., Ltd.
    Inventor: Tsung-Shih Lee
  • Signal-to-noise ratio enhancing touch sensing apparatus using charge sharing method
    Patent number: 8773379
    Abstract: A touch sensing apparatus is disclosed. The touch sensing apparatus includes a logic control module, at least one storage control module, and at least one decoding control module. The logic control module is used to generate a plurality of control signals having different control timings. The plurality of control signals includes a storage control signal and a decoding control signal. Each storage control module includes a plurality of storage capacitors, and respectively stores each of sensed voltages in different storage capacitors at different times according to a storage control timing of the storage control signal. The sensed voltages are analog data sensed from scan lines of an ITO sensor. The decoding control module is used to decode the sensed voltages stored in the storage capacitors according to a decoding control timing of the decoding control signal to output the decoded analog data.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: July 8, 2014
    Assignee: Raydium Semiconductor Corporation
    Inventors: Chien-Yu Chan, Chien-Kuo Wang, Shang-Ping Tang, Ko-Yang Tso
  • LCD wherein the polarity of the final subfield of a field is kept the same as the polarity of first subfield of the next subfield by inverting the polarity of the capacitive potential lines twice during the final subfield
    Patent number: 8773343
    Abstract: A liquid crystal device includes a capacitive electric potential line driving circuit that supplies one of a low-level and a high-level electric potential as a capacitive electric potential to each of the capacitive electric potential lines, reverses polarity of the capacitive electric potential as a write period for the row corresponding to the corresponding capacitive electric potential line is terminated in each subfield period included in a unit period, and, in a final subfield period included in the unit period, reverses polarity of the capacitive electric potential again at the time period of after reversing the polarity of the capacitive electric potential until terminating the corresponding final subfield period.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: July 8, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Shinsuke Fujikawa
  • Capacitive touchscreen system with drive-sense circuits
    Patent number: 8766930
    Abstract: Disclosed herein are various embodiments of a capacitive touchscreen system that is capable of sensing simultaneous or near-simultaneous multiple finger touches made on a capacitive touchscreen. In one embodiment, drive-sense circuits operably connected to X and Y lines of the touchscreen may be interchangeably and selectably configured as either sense circuits or drive circuits by a drive/sense processor operably connected thereto.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: July 1, 2014
    Assignee: PixArt Imaging Inc.
    Inventor: Vitali Souchkov
  • Backlight device having a light emitting diode driving part and liquid crystal displaying device using the backlight device
    Patent number: 8766905
    Abstract: A backlight device which uses a light emitting diode as a light source, the back light device being configured to irradiate a liquid crystal display panel from a rear surface of the liquid crystal display panel, the backlight device having a structure where plural lines are provided on a backlight board with a certain gap, each of the lines being where plural of the light emitting diodes are provided, the backlight device includes a light emitting diode driving part configured to segment an entire screen of the backlight board into plural segmented regions and configured to independently control brightness of the light emitting diodes with a segmented region unit.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: July 1, 2014
    Assignees: Mitsumi Electric Co., Ltd., ATRC Corporation
    Inventor: Takeshi Adachi
  • System and method for simulating stiff bristle brushes using stiffness-height parameterization
    Patent number: 8760438
    Abstract: A method, system, and computer-readable storage medium for simulating bristle brush behavior in an image editing application may use stiffness-height parameterization to determine the height of a brush tool above a canvas during a brush stroke. The determination may be dependent on the pressure applied during the stroke (e.g., using a stylus on a pressure-sensitive tablet), and on the stiffness of the brush bristles. The system may select a standard-stiffness or high-stiffness mapping between stylus pressure values and brush height values dependent whether the bristle stiffness value is above or below a pre-determined threshold. The standard-stiffness mapping may apply a linear function to pressure values to determine height values. Using the high-stiffness mapping, the effect of increased pressure on corresponding brush height values may be reduced as bristle stiffness is increased.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: June 24, 2014
    Assignee: Adobe Systems Incorporated
    Inventors: Stephen J. DiVerdi, Sunil Hadap, Aravind Krishnaswamy
  • Liquid crystal display device and method for local dimming driving using spatial filter of the same
    Patent number: 8760385
    Abstract: A liquid crystal display device capable of improving a contrast ratio and of reducing a halo phenomenon with low power consumption and a method for local dimming driving the same are disclosed. A method for local dimming driving a liquid crystal display includes determining a local dimming value for each of light-emitting blocks based on analyzing input image data by the unit of light-emitting block provided in a backlight unit; determining a halo degree by analyzing a total light quantity of black pixels having black gradations in the input image data; adjusting the number of spatial filtering repetitions based on the determined halo degree; compensating the local dimming value by performing spatial filtering for the local dimming value an adjusted number of times; and controlling brightness of the backlight unit for each of the blocks by using the compensated local dimming value.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: June 24, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Kyung-Joon Kwon, Dong-Woo Kim, Hee-Won Ahn, Jung-Hwan Lee
  • Mouse used with mouth
    Patent number: 8760402
    Abstract: A mouse includes a main body and a control circuit. A left button, a number of pressure sensors, a right button, and a control button are positioned on the main body. The control circuit includes a control unit, an acceleration sensor, and a wireless transmitter. The left button, the pressure sensors, the right button, the control button, the acceleration sensor, and the wireless transmitter are connected to the control unit. When the mouse is placed in the mouth of a user, the left button, the pressure sensors, and the right button are operated by the tongue of the user. The control button is bitten by the teeth of the user, to turn on the acceleration sensor. The acceleration sensor senses movement of the head of the user, and cooperates with the control unit and the wireless transmitter to control a cursor of a computer to move.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: June 24, 2014
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Zhen-Wei Xu
  • Liquid crystal device and method of driving the same
    Patent number: 8754836
    Abstract: A driving circuit for driving a liquid crystal display device having a plurality of gate lines, data lines and switch elements connected to the gate and data lines includes a data driver for applying a plurality of data signals to the date lines, a gate driver for applying a plurality of gate signals to the gate lines, a timing controller for providing a plurality of control signals to the data and gate drivers, a power supply for generating a power voltage, and a discharging circuit for applying a first signal and a second signal to the gate driver in accordance with the power voltage.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: June 17, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Du-Jin Kim
  • Method for driving display device
    Patent number: 8754839
    Abstract: A method for driving a display device in which characteristics of a transistor including an oxide semiconductor can approximately be recovered to characteristics before deterioration is provided. In the method for driving the display device, by which images are displayed with the use of a plurality of frame periods, the display device is driven so that a voltage of 20 V or higher can be applied to a gate of a transistor, which is a driving element, for 1 millisecond or longer in a period, in which any one of scan lines is selected, in each frame period. For a plurality of frame periods, the rows are selected so that a voltage of 20 V or higher is applied to gates of all of the transistors which are driving elements for 1 millisecond or longer, whereby characteristics of the transistor can approximately be recovered to characteristics before deterioration.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: June 17, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Jun Koyama