Patents Examined by Chanh Nguyen
  • Patent number: 8866707
    Abstract: In a display device using a delta arrangement, in a case where a circuit of a large number of elements such as a static memory is arranged every pixel, a wire becomes complicated to cause wiring delay. A shape of a pixel electrode is formed polygonally to arrange in a case where the number of elements such as a static memory is large or in a case where an area of an element required to be included in a pixel is large in a delta arrangement. The shape of the pixel electrode is arranged in a polygon so that a wire along a pixel shape can be used. Even in a case of a pixel with a large number of elements, parasitic resistance of a wire and parasitic capacitance of a wire can be reduced so that wiring delay can be solved.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: October 21, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Jun Koyama, Hiroyuki Miyake, Shunpei Yamazaki
  • Patent number: 8866759
    Abstract: The display device with a touch panel according to the present invention has high reliability and is a display device with a touch panel having a display panel and a touch panel placed on the front surface of the display panel, wherein the display panel has a first substrate and a second substrate provided so as to be layered on the first substrate, the first substrate has a non-overlapping region that does not overlap the second substrate, and the touch panel is a liquid crystal display device with a touch panel secured on the second substrate, the touch panel has an overlapping region that overlaps the non-overlapping region of the first substrate, and a spacer is secured to the touch panel between the non-overlapping region of the first substrate and the overlapping region of the touch panel.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: October 21, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Takeharu Furusawa
  • Patent number: 8866725
    Abstract: An object is to provide a liquid crystal display device in which image display can be recognized even in an environment where light is dim around the liquid crystal display device. Another object is to provide a liquid crystal display device capable of image display in both modes of a reflective mode in which external light is used as a light source and a transmissive mode in which a backlight is used. One pixel is provided with a pixel electrode having both of a region where light incident through a liquid crystal layer is reflected and a region having a light-transmitting property, so that image display can be performed in both modes of a reflective mode in which external light is used as a light source and a transmissive mode in which a backlight is used.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: October 21, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Jun Koyama, Yoshiharu Hirakata
  • Patent number: 8860651
    Abstract: A gate driver includes cascade-connected driving stages. Each of the driving stages includes a first shift register circuit and a second shift register circuit. The first shift register circuit is configured for outputting a present stage driving signal and a next stage driving signal. The second shift register circuit is electrically coupled to the first shift register circuit and configured for outputting a present stage gate signal, a first next stage gate signal, and a second next stage gate signal. Furthermore, a display panel is also provided herein.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: October 14, 2014
    Assignee: AU Optronics Corporation
    Inventors: Chien-Chang Tseng, Kuang-Hsiang Liu, Yu-Hsin Ting, Shih-Hsiang Chou, Ting-Jui Chang
  • Patent number: 8860639
    Abstract: Disclosed are a timing controller and an OLED display device using the same. The timing controller includes a reception unit, an image signal generation unit, and a control signal generation unit. The reception unit receives a plurality of video signals and a timing signal which are transferred from a system. The image signal generation unit realigns the video signals to generate a plurality of image signals. The control signal generation unit analyzes the video signals to determine whether a current input image is a static image or a moving image, and generates a plurality of control signals according to the determined result. When the current input image is determined as the static image, the control signal generation unit generates a plurality of control signals which allow a panel to be driven at a change frame driving frequency lower than a reference frame driving frequency necessary for driving the moving image.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: October 14, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Hyoung Su Kim, Hyung Nyuck Cho
  • Patent number: 8854291
    Abstract: A gate signal line driving circuit which suppresses noises in a gate signal and a display device which uses the gate signal line driving circuit are provided. A first basic circuit provided to a gate signal line driving circuit includes a HIGH voltage applying switching element which applies a HIGH voltage to gate signal lines in response to a signal HIGH period, and a LOW voltage applying switching circuit which applies a LOW voltage to the gate signal lines in response to a signal LOW period. In response to a signal HIGH period, a switch of the LOW voltage applying switching circuit of the first basic circuit is turned off based on a signal applied to a switch of the HIGH voltage applying switching element of a second basic circuit which assumes a signal HIGH period earlier than the first basic circuit.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: October 7, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co. Ltd.
    Inventors: Takahiro Ochiai, Mitsuru Goto, Youzou Nakayasu, Yuki Okada, Naoki Takada
  • Patent number: 8847865
    Abstract: A data line driving section (6) outputs a video signal voltage for each pixel to a data line (DL) for each predetermined period in order. In outputting a video signal voltage for a pixel, the data line driving section (6) outputs a gradation signal voltage having a voltage corresponding to a gradation value of the pixel as the video signal voltage during a second part of the predetermined period, and outputs a correction gradation signal voltage different from the gradation signal voltage as the video signal voltage during a first part of the predetermined period. A control section (4) changes a relationship between the correction gradation signal voltage and the gradation signal voltage based on a combination of the gradation value of the pixel and a gradation value of a pixel preceding the pixel.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: September 30, 2014
    Assignee: Japan Display Inc.
    Inventors: Yoshihisa Ooishi, Misa Owa, Junichi Maruyama, Goki Toshima
  • Patent number: 8836647
    Abstract: A touch sensor has a support layer (12) of an insulating material and a resistive layer (13) applied to the support layer. A resistive material is shaped according to an elongated pattern forming a sequence of touch positions, and has a single terminal (16) to be coupled to a sense input (17) of a detecting device (11), while an open end (15) of the sequence opposite to the terminal end remains unconnected. The detecting device detects an active resistance (Rp) between the single terminal and one of said touch positions that is touched by a user via a return capacitance constituted (Cu) by the user and a mass element (18) coupled to the detecting device. Advantageously only a single terminal is necessary, whereas a number of touch positions can be discriminated.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: September 16, 2014
    Assignee: Koninklijke Philips N.V.
    Inventor: Douglas Ulrich Alexander
  • Patent number: 8836613
    Abstract: A stereoscopic image display includes a display panel including pixels and a patterned retarder. Each pixel includes a main display unit including a first pixel electrode connected to a data line through a first thin film transistor (TFT) and a first common electrode connected to an upper common line, an auxiliary display unit including a second pixel electrode, which is connected to the data line through a second TFT and is connected to the upper common line through a discharge control TFT, and a second common electrode connected to the upper common line, and a line unit between the main display unit and the auxiliary display unit. The line unit includes a gate line, through which a scan pulse is applied to the first and second TFTs, and a discharge control line, through which a discharge control voltage is applied to the discharge control TFT.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: September 16, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Seok Kim, Kwangjo Hwang, Euitae Kim
  • Patent number: 8836609
    Abstract: A stereoscopic display device includes a display panel, and a light modulator. The display panel provides a first display information and a second display information alternately by scanning. The light modulator is disposed on the side of a display surface of the display panel and receives the first display information and the second display information. The light modulator provides a first modulating mode and a second modulating mode alternately by scanning synchronously with the display panel. The first modulating mode corresponds to the first display information, and renders the first display information having a first polarization state; the second modulating mode corresponds to the second display information, and renders the second display information having a second polarization state.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: September 16, 2014
    Assignee: AU Optronics Corp.
    Inventors: Chao-Yuan Chen, Geng-Yu Liu, Jenn-Jia Su, Ting-Jui Chang
  • Patent number: 8836683
    Abstract: Provided is a boosting circuit. The boosting circuit includes a voltage generator, a booster, a voltage detector, and a selector. The voltage generator receives an external first voltage to output a second voltage. The booster boosts an input voltage to output a third voltage. The voltage detector detects at least one voltage level of the first to third voltages to output a selection signal. The selector transfers one of the first and second voltages as the input voltage of the booster in response to the selection signal.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: September 16, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jeehwal Kim
  • Patent number: 8830154
    Abstract: The present invention discloses a liquid crystal display device and its driving circuit. The first switch unit and one of the channels of the scan driver correspond to the pixel units of more than one row. The input terminal of the first switch unit is electrically connected to one of the channels, and each of the output terminals of the first switch unit is electrically connected to a scan line of the pixel units of more than one row for outputting a scan signal from one of channels of the scan driver to the pixel units electrically connected to the corresponding scan line.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: September 9, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Jinjie Wang
  • Patent number: 8830155
    Abstract: The present invention in one aspect relates to a source driver for driving a display panel to display an image data in an adaptive column inversion. In one embodiment, the source driver includes a data processing unit having a logic circuit adapted for determining N most-significant bits (MSBs) of image data signals of two neighboring data lines, such that when all of the N MSBs are equal to 1 or 0, the output of the logic circuit is 1, otherwise, the output of the logic circuit is 0, and a MUX coupled to the data processing unit and adapted for receiving a frame polarity control signal, FramePOL, and a pixel polarity control signal, XPOL, and selectively outputting the frame polarity control signal FramePOL when the output of the logic circuit is 1, or the pixel polarity control signal POL when the output of the logic circuit is 0, as a polarity control signal, POL.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: September 9, 2014
    Assignee: AU Optronics Corporation
    Inventors: Chao-Ching Hsu, Jen-Chieh Chen, Mu-Lin Tung
  • Patent number: 8830160
    Abstract: With a card including a passive electronic paper display configured to display a visual image, a method of presenting information on a card includes selectively changing a visual image displayed on the passive electronic paper display to update information represented by the visual image, and wherein the card is sized to be carried by a user.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: September 9, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Omer Gila, Napoleon J. Leoni, Henryk Birecki
  • Patent number: 8823626
    Abstract: In a plurality of source drivers, a unit start pulse inputted/outputted to/from the source drivers is cascaded between an ante-stage source driver and a post-stage source driver, a horizontal start pulse outputted from a timing controller is inputted to a first-stage source driver, and the duty ratio of a vertical clock is controlled by one of the plurality of cascaded unit start pulses. In a matrix display device, it is thereby possible to provide a timing controller having a simple circuit configuration which needs no counter circuit for generating a vertical clock to be outputted to a gate driver.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: September 2, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventor: Akihiro Minami
  • Patent number: 8823613
    Abstract: A pixel circuit for an organic light emitting display includes: a fourth NMOS transistor including a gate electrode coupled to a first scan line, and a first electrode coupled to a first node; a storage capacitor coupled between the first node and a second node; a third NMOS transistor including a gate electrode coupled to a second scan line, and a first electrode coupled to a data line; a second NMOS transistor including a first electrode coupled to a second electrode of the third NMOS transistor, and a gate electrode and a second electrode coupled to the first node; a fifth NMOS transistor including a gate electrode coupled to an emission control line, and a first electrode coupled to a first power source; an organic light emitting diode (OLED) comprising an anode coupled to the second node; and a first NMOS transistor for providing a driving current to the OLED.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: September 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bo-Yong Chung, Keum-Nam Kim
  • Patent number: 8823609
    Abstract: An organic electroluminescent display apparatus including a pixel circuit and a method of driving the organic electroluminescent display apparatus are provided. Embodiments of the present invention may solve problems where the luminance of light is changed due to a change of a voltage of an anode of an organic electro-light emitting device such that an image quality is deteriorated when N-type transistors are used to form the organic electroluminescent display apparatus.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: September 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Kyung-Hoon Chung
  • Patent number: 8823614
    Abstract: An apparatus and method for performing natural luminance adjustment by adjusting voltage levels of gray-scale voltages of a display device through a plurality of steps and determining gray-scale voltage levels of intermediate luminance levels using predetermined data when a luminance level of the display device is adjusted.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: September 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Wook Lee
  • Patent number: 8810504
    Abstract: The present invention discloses a brightness compensation method. The brightness compensation method includes controlling a plurality of backlights of a plurality of display areas to turn on with a plurality of backlight intensity; calculating a plurality of total backlight intensity; calculating a plurality of actual backlight intensity according to the plurality of total backlight intensity and a backlight scanning ratio; dividing a plurality of maximum backlight intensity when the plurality of backlights are fully turned on by the plurality of actual backlight intensity, to generate a plurality of compensation gains; and displaying a compensated image data with a plurality of compensated image intensity after compensating a plurality of image intensity corresponding to the plurality of display area of an image data with the plurality of compensation gains.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: August 19, 2014
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Heng Yu, Min Wei, Jiande Jiang
  • Patent number: 8810515
    Abstract: An optical navigation device for a computer application includes a radiation source capable of producing a beam of radiation, a sensor for receiving an image, and an optical element for identifying movement of the feature to thereby enable a computer action to be carried out. The optical element is formed from a single piece and includes at least one frustrated total internal reflection (F-TIR) surface capable of affecting frustrated total internal reflection of the beam of radiation in the presence of the feature to thereby generate the image.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: August 19, 2014
    Assignee: STMicroelectronics (Research & Development) Limited
    Inventors: Mathieu Reigneau, Ewan Findlay, Stuart Brodie