Patents by Inventor Hong Sung Song

Hong Sung Song has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20080284704
    Abstract: A liquid crystal display (LCD) device and a method for driving the LCD device are disclosed. The LCD device includes a frame rate adjusting circuit for controlling a frame rate to be maintained at a 1-fold rate in frame periods other than an Nth frame period (“N” is a multiple of 8 or more), while being increased to an “i”-fold-accelerated rate (“i” is a positive integer of 2 or more) in the Nth frame period, to output reference timing signals in the frame periods other than the Nth frame period, and to output accelerated timing signals in the Nth frame period, a timing controller for generating data and gate timing control signals, based on at least one of each reference timing signal and each accelerated timing signal, and a logic circuit for accelerating a frequency of a polarity control signal in the Nth frame period.
    Type: Application
    Filed: May 8, 2008
    Publication date: November 20, 2008
    Inventors: Hong Sung Song, Woong Ki Min, Su Hyuk Jang
  • Publication number: 20080278428
    Abstract: A liquid crystal display (LCD) device having a simplified printed circuit board (PCB) is disclosed. The LCD device includes a first integrated circuit (IC) group operating in accordance with timing control signals to convert digital video data into data voltage and to supply the data voltage to a first data line group, and a second IC group receiving the timing control signals and the digital video data via a first source PCB and LOG wirings and operating in accordance with the timing control signals to convert the digital video data into the data voltage and to supply the data voltage to a second data line group Each IC of the first and second IC groups includes a polarity control signal (POL) generator for generating a polarity control signal to control a polarity of the data voltage, using a part of the timing control signals.
    Type: Application
    Filed: May 9, 2008
    Publication date: November 13, 2008
    Inventors: Hong Sung Song, Woong Ki Min, Byung Jin Choi, Su Hyuk Jang
  • Publication number: 20080225036
    Abstract: A disclosed display includes a display panel including a first group of data lines and second group of data lines, a plurality of gate lines crossing the first and a second groups of data lines, and a plurality of picture cells arranged in a matrix. The display also includes a first source PCB coupled to first data integrated circuits (ICs) to supply first data voltages to the first group of data lines and a second source PCB coupled to second data ICs to supply second data voltages to the second group of data lines. The display further includes a timing controller having a single output port with a plurality of output pins which are configured to output video data to both the first and second data ICs, and to output a timing control signal to control both the first and second data ICs.
    Type: Application
    Filed: December 28, 2007
    Publication date: September 18, 2008
    Inventors: Hong Sung Song, Woong Ki Min, Byung Jin Choi, Dong Hoon Cha, Su Hyuk Jang
  • Patent number: 7403185
    Abstract: A liquid crystal display device includes a plurality of data integrated circuits. Each data integrated circuit includes a charge sharing circuit for electrically connecting all of the data lines together in response to a control signal and a voltage variation limiting circuit for generating the control signal.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: July 22, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Hong Sung Song, Sung Woong Moon
  • Publication number: 20080170024
    Abstract: A liquid crystal display device includes a liquid crystal display panel including a plurality of data lines to which a data voltage is supplied, a plurality of gate lines to which a gate pulse is supplied, and a plurality of liquid crystal cells, a data drive circuit to invert a polarity of the data voltage in response to a polarity control signal and to output the data voltage to the data lines in response to a source output enable signal, a gate drive circuit to supply the gate pulse to the gate lines, and a POL/SOE logic circuit to invert the polarity control signal for every frame period except at Nth-multiple frame period (where N is a positive integer), wherein the POL/SOE logic circuit controls the polarity control signal at every Nth-multiple frame period such that the polarity of the data voltage is the same as the previous frame period and controls a pulse width of the source output enable signal at every Nth-multiple frame period to be longer than for the other frame periods.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 17, 2008
    Inventors: Hong Sung Song, Woong Ki Min, Byung Jin Choi, Dong Il Kim, Su Hyuk Jang
  • Publication number: 20080170025
    Abstract: A liquid crystal display device includes a liquid crystal display panel including a plurality of data lines, a plurality of gate lines, and a plurality of liquid crystal cells, the plurality of liquid crystal cells associated to a first and second liquid crystal cell groups, a data drive circuit to supply a data voltage to the data lines in response to a polarity control signal, a gate drive circuit to supply a scan pulse to the gate lines, and a polarity control circuit to generate different polarity control signals for each frame period and to control data voltage frequencies of the first and second liquid crystal cell groups to be different from each other.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 17, 2008
    Inventors: Hong Sung Song, Ju Young Lee, Woong Ki Min, Dong Hoon Cha, Sun Young Choi, Su Hyuk Jang
  • Patent number: 7379147
    Abstract: A liquid crystal display includes driver integrated circuits for applying a video signal to data lines, output pins and at least one dummy output pin are arranged within each data driver integrated circuit, and a switching pin is arranged within each data driver integrated circuit for controlling whether or not the dummy output pin outputs a signal.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: May 27, 2008
    Assignee: LG.Philips LCD Co., Ltd
    Inventors: Sai Chang Yun, Hong Sung Song
  • Publication number: 20080117162
    Abstract: In one embodiment, a driving method for a liquid crystal display device having a backlight is provided. Input digital video data is analyzed and an adaptive brightness control signal is generated based on a brightness analysis of the input digital video data. An external brightness control signal is received via a user interface. A plurality of brightness control voltages is generated based on the adaptive brightness control signal. The plurality of brightness control voltages represents different brightness levels. One of the brightness control voltages is selected in response to the external brightness control signal. The backlight operates according to the selected brightness control voltage.
    Type: Application
    Filed: August 24, 2007
    Publication date: May 22, 2008
    Inventors: Hong Sung Song, Byung Jin Choi
  • Publication number: 20080088556
    Abstract: A method of driving a liquid crystal display device includes supplying data voltages to a pixel on a moving path of an image during a scroll operation, wherein the data voltages displaying the image have opposite polarities.
    Type: Application
    Filed: September 26, 2007
    Publication date: April 17, 2008
    Inventors: Woong-Ki Min, Hong-Sung Song
  • Publication number: 20080001890
    Abstract: An apparatus and method for driving an LCD device is disclosed, in which an inversion method of an LCD panel is changed depending on a specific pattern of image data so as to improve picture quality of images displayed on the LCD panel. The apparatus for driving an LCD device includes an LCD panel displaying images, a polarity control signal generator comparing image data with pattern data previously stored for the unit of frame and generating a polarity control signal in accordance with the compared result, a data driver converting an inversion method in accordance with the polarity control signal and supplying the received image data to the LCD panel, a gate driver supplying scan pulses to the LCD panel, and a timing controller controlling the data driver and the gate driver.
    Type: Application
    Filed: December 28, 2006
    Publication date: January 3, 2008
    Inventors: Hong Sung Song, Oh Hyun Lee, Woong Ki Min, Hyuk Jin Kim
  • Patent number: 7304691
    Abstract: A liquid crystal display panel capable of reducing a capacitance of a parasitic capacitor between a data line and a pixel electrode. The liquid crystal display panel comprises: a thin film transistor at a crossing of a gate line and a data line, liquid crystal cells including a pixel electrode connected to the thin film transistor; first shield patterns in the liquid crystal cells, each shield pattern being parallel to the data line without overlapping the data line, wherein the shield patterns are insulated from and overlap with an outer portion of the pixel electrode; and a common line arrayed to connect the shield patterns for each the liquid crystal cell.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: December 4, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hong Sung Song, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
  • Patent number: 7268764
    Abstract: A liquid crystal display and a driving method thereof that are capable of driving a liquid crystal display panel with no flicker using a data driver driven by a column inversion system. In the liquid crystal display, a plurality of liquid crystal cells are positioned at intersections between gate lines and data lines. Color filters are arranged in a zigzag type on the liquid crystal cells on a basis of the data lines. A gate driver drives the gate lines. A data driver applies video signals to the data lines by a column inversion system and shifts said video signals applied to any one of odd horizontal lines and even horizontal lines by one channel to apply said video signals corresponding to the color filters to the liquid crystal cells.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: September 11, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hong Sung Song, Sang Chang Yun
  • Patent number: 7256858
    Abstract: A liquid crystal display includes driver integrated circuits for applying a video signal to data lines, output pins and at least one dummy output pin are arranged within each data driver integrated circuit, and a switching pin is arranged within each data driver integrated circuit for controlling whether or not the dummy output pin outputs a signal.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: August 14, 2007
    Assignee: LG.Philips LCD CO., Ltd.
    Inventors: Sai Chang Yun, Hong Sung Song
  • Patent number: 7215310
    Abstract: A liquid crystal display device includes a plurality of data lines on a liquid crystal display panel, a plurality of gate lines on the liquid crystal display panel orthogonal to the plurality of data lines, a plurality of thin film transistors on the liquid crystal display panel, each arranged at intersections between the data lines and the gate lines, a plurality of pixels, each arranged at the intersections between the data lines and the gate lines, a gate driver for applying a scanning pulse to the gate lines, a data driver for applying data to the data lines, a timing controller for applying a timing signal to the gate driver and the data driver, a host controller for applying the data to the data driver and applying a horizontal synchronizing signal having a first frequency and a vertical synchronizing signal having a second frequency less than 60 Hz to the timing controller to control the data driver and the timing controller, a plurality of auxiliary lines, each provided on the liquid crystal display p
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: May 8, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hong Sung Song, Keuk Sang Kwon
  • Patent number: 7023517
    Abstract: An in-plane switching mode liquid crystal display panel includes an array substrate; a plurality of gate lines and a plurality of data lines defining a plurality of pixel regions; a switching device; a pixel electrode and a common electrode; a number N of data Tape Carrier Packages (TCPs) applying image information to the data lines and the M number of gate TCPs; a first contact hole formed at an outer edge of the image display part; a first common voltage supply line electrically connected to the common electrode through the first contact hole at a predetermined, e.g., right, end portion; a second contact hole formed at an outer lower end portion of the image display part and electrically connecting the first common voltage supply line and the common electrode; and a color filter. A method of making the display panel is also disclosed.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: April 4, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hong Sung Song, Sung Woong Moon, Gun Woo Do
  • Publication number: 20060012743
    Abstract: A liquid crystal display includes driver integrated circuits for applying a video signal to data lines, output pins and at least one dummy output pin are arranged within each data driver integrated circuit, and a switching pin is arranged within each data driver integrated circuit for controlling whether or not the dummy output pin outputs a signal.
    Type: Application
    Filed: September 20, 2005
    Publication date: January 19, 2006
    Inventors: Sai Chang Yun, Hong Sung Song
  • Patent number: 6945406
    Abstract: A tape carrier package (TCP) film for use with liquid crystal displays. The tape carrier package (TCP) film includes depressions and punch holes that enable fast, efficient separation of a tape carrier part, which includes driving integrated circuits, from a peripheral part. The tape carrier part has an “I” shape that is formed by depressions. Punching holes are provided along the depressions to reduce the length of the connection between the tape carrier package part and the peripheral part. The peripheral part includes a plurality of sprocket holes along the edges of the tape carrier package film.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: September 20, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hong-Sung Song, Sung-Woong Moon
  • Patent number: 6903715
    Abstract: A liquid crystal display device includes a liquid crystal display panel for displaying image data corresponding to a digital video signal, a digital video card for generating the digital video signal, a vertical synchronizing signal and a horizontal synchronizing signal, a controller for generating a dot clock signal and a dual gate start pulse using the vertical and horizontal synchronizing signals, a data driver for applying the digital video signal to data lines in response to the dot clock signal, and a gate driver for applying scanning signals having at least two signal voltage levels to gate lines in response to the dual gate start pulse.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: June 7, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventor: Hong Sung Song
  • Patent number: 6891522
    Abstract: A method and apparatus of driving a liquid crystal display panel using a 2-dot inversion system is disclosed in the present invention. More specifically, a method of driving a liquid crystal display using a 2-dot inversion system includes the steps of sequentially pre-charging a plurality of pixel cells of the liquid crystal display panel along a plurality of gate lines, and sequentially charging the pixel cells with a plurality of data signals along the gate lines after pre-charging the pixel cells.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: May 10, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Hong-Sung Song, Sung-Woong Moon
  • Patent number: 6842161
    Abstract: A liquid crystal panel driving method and apparatus for a dot-inversion system is adaptive for constantly maintaining a voltage applied to each liquid crystal cell, wherein a ‘n?1’th(n?2) cell of adjacent pixel cells is charged and then a nth cell thereof is charged for a shorter time period than the ‘n?1’th(n?2) cell. Accordingly, the liquid crystal cells positioned adjacent to each other receive video signals having the same polarity during a different time period. Therefore, the liquid crystal cells positioned adjacent to each other to receive video signals having the same polarity can be coupled with an equal voltage.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: January 11, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hong Sung Song, Yong Chae Jung