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: 20100157196
    Abstract: A backlight unit capable of preventing an initial driving malfunction is disclosed. The backlight unit includes a bottom cover opened upwardly, a reflective sheet disposed in the inner surface of the bottom cover; a plurality of lamps arranged at a fixed interval on the reflective sheet; an auxiliary light source disposed at the outer side surface of the bottom cover; and a light guide member, opposite to the emitting surface of the auxiliary light source, configured to guide light emitted from the auxiliary light source to the lamps through first and second penetration holes formed on one of the side walls of the bottom cover and the reflective sheet.
    Type: Application
    Filed: December 2, 2009
    Publication date: June 24, 2010
    Inventors: Joo Hong Lee, Hong Sung Song, Seok Hwan Oh, Woong Ki Min, Ji Woon Min
  • Publication number: 20100073339
    Abstract: Disclosed is a system and method for correcting a gamma for shortening a gamma correction time period and improving gamma correction efficiency and reliability thereof, and simplifying a gamma correction device for reducing a production cost of image display devices.
    Type: Application
    Filed: December 30, 2008
    Publication date: March 25, 2010
    Inventors: Joo Hong Lee, Hong Sung Song, Oh Hyun Lee, Woong Ki Min
  • Publication number: 20100073591
    Abstract: A liquid crystal display module (LCDM) includes a liquid crystal panel; a backlight unit disposed under the liquid crystal panel and projecting light on the light crystal panel; a main frame surrounding a side of the backlight unit and a side of the liquid crystal panel; an integrated printed circuit board (PCB) connected to the liquid crystal panel and disposed at a side surface of the main frame, the integrated PCB including a data unit for providing a data driving signal to the liquid crystal panel, a signal generating unit for generating a data control signal, a gate control signal, and a power source signal and a timing control unit; a connector disposed on the integrated PCB and including a slot along the side surface of the main frame, the connector for receiving a signal from an external unit; a bottom frame under the backlight unit; a system board on a rear side of the bottom frame; a flexible cable connecting the connector and the system board; and a top frame covering edges of the liquid crystal pa
    Type: Application
    Filed: December 17, 2008
    Publication date: March 25, 2010
    Inventors: Byung-Jin Choi, Ji-Woon Min, Kyoung-Sub Kim, Hong-Sung Song
  • Publication number: 20100060812
    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: Application
    Filed: November 16, 2009
    Publication date: March 11, 2010
    Inventors: Hong Sung Song, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
  • Patent number: 7633569
    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: November 1, 2007
    Date of Patent: December 15, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hong Sung Song, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
  • Publication number: 20090303225
    Abstract: A liquid crystal display (LCD) device and a driving method thereof for improving a working efficiency of the LCD and reducing manufacturing costs. The liquid crystal display device includes a liquid crystal display panel having liquid crystal cells at crossings of data lines and gate lines, data integrated circuit supplying pixel data via a plurality of data output channels, a gate integrated circuit driving the gate lines, a channel selector for selecting the plurality of data output channels of the data integrated circuits in accordance with a number of the data lines wherein only the selected data output channels contain the pixel data, and a timing controller for controlling the data integrated circuit and the gate integrated circuit.
    Type: Application
    Filed: August 10, 2009
    Publication date: December 10, 2009
    Inventors: Sin Ho Kang, Hong Sung Song, Jin Cheol Hong, Seung Kuk An
  • Patent number: 7586474
    Abstract: A liquid crystal display (LCD) device and a driving method thereof for improving a working efficiency of the LCD and reducing manufacturing costs. The liquid crystal display device includes a liquid crystal display panel having liquid crystal cells at crossings of data lines and gate lines, data integrated circuit supplying pixel data via a plurality of data output channels, a gate integrated circuit driving the gate lines, a channel selector for selecting the plurality of data output channels of the data integrated circuits in accordance with a number of the data lines wherein only the selected data output channels contain the pixel data, and a timing controller for controlling the data integrated circuit and the gate integrated circuit.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: September 8, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Sin Ho Kang, Hong Sung Song, Jin Cheol Hong, Seung Kuk An
  • Publication number: 20090185365
    Abstract: Disclosed are a backlight unit capable of determining a deviated degree of a lamp grip by a guide line formed adjacent to the lamp grip a PCB that connects an electrode thereof with a lamp electrode, and a manufacturing method for the same.
    Type: Application
    Filed: March 25, 2009
    Publication date: July 23, 2009
    Inventors: Hong Sung Song, Byung Jin Choi
  • Publication number: 20090153593
    Abstract: A gray scale voltage generator includes a voltage dividing resistor string to generate blue (B), red (R), and green (G) gamma voltage signals, the voltage dividing resistor string including a B gamma voltage signal generating section, a R/G gamma voltage generating section, and a common (COM) gamma voltage generating section to individually control a B gray scale voltage and a R/G gray scale voltage to maintain a constant color temperature.
    Type: Application
    Filed: November 20, 2008
    Publication date: June 18, 2009
    Inventors: Joo Hong Lee, Hong Sung Song, Woong Ki Min, Yong Gi Son
  • Publication number: 20090146935
    Abstract: The exemplary embodiment relates to a liquid crystal display device.
    Type: Application
    Filed: December 10, 2008
    Publication date: June 11, 2009
    Inventors: Hong Sung Song, Chaeyoul Cho, Woongki Min, Yonggi Son, Suhyuk Jang
  • Publication number: 20090146940
    Abstract: A display having a data driving integrated circuit includes N number of output channels (where N is an integer) having at least two regions including a first output channel and an Nth output channel, a data output channel group including M data output channels (where M is an integer less than N), the M data output channels supplying pixel data to a corresponding number of the data lines in accordance with a desired resolution of the display, wherein (N?M) output channels are not supplied with pixel data, and the (N?M) output channels are located between the first output channel and the Nth output channel, and a channel selector selecting the M data output channels.
    Type: Application
    Filed: February 6, 2009
    Publication date: June 11, 2009
    Inventors: Sin Ho Kang, Hong Sung Song, Jin Cheol Hong
  • Patent number: 7495648
    Abstract: A display having a data driving integrated circuit includes N number of output channels (where N is an integer) having at least two regions including a first output channel and an Nth output channel, a data output channel group including M data output channels (where M is an integer less than N), the M data output channels supplying pixel data to a corresponding number of the data lines in accordance with a desired resolution of the display, wherein (N-M) output channels are not supplied with pixel data, and the (N-M) output channels are located between the first output channel and the Nth output channel, and a channel selector selecting the M data output channels.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: February 24, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Sin Ho Kang, Hong Sung Song, Jin Cheol Hong
  • Patent number: 7492343
    Abstract: A liquid crystal display device for improving working efficiency and reducing manufacturing cost. In the device, a data integrated circuit has a data output group for supplying pixel data to data lines and a dummy data output channel group which is not supplied with pixel data. A channel selector selects an output channel of the data output channel group. A tape carrier package is mounted with the data integrated circuit and has a data output pad group connected to the data output channel group and a dummy output pad group. The pixel data is applied, via the data output channels selected by the channel selector, to the data lines.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: February 17, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Sin Ho Kang, Jin Cheol Hong, Seung Kuk An, Hong Sung Song
  • Patent number: 7477224
    Abstract: A liquid crystal display includes a liquid crystal display panel having liquid crystal cells arranged at crossings of gate lines and data lines and include thin film transistors that are alternately connected to adjacent data lines every ā€˜iā€™ number of horizontal lines (i is a positive number); a gate driver for driving the gate lines; and a data driver for driving the data lines; a multiplexor array for determining an output channel of an inputted pixel data and for adding one blank data in response to the control signals having their polarity inverted every ā€˜iā€™ number of horizontal lines, and a digital-analog converter array for converting the pixel data and the blank data to a pixel signal and a blank signal having their polarities inverted according to the data lines and frames.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: January 13, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hong Sung Song, Sang Chang Yun
  • Publication number: 20090002292
    Abstract: A liquid crystal display device includes a data transition part to compare a number of transitions between a previous data and a current data to selectively invert the current data and to generate a reverse signal, a memory to store the data from the data transition part and to output the stored data as the previous frame data, a data reverse transition part to reversely convert the data from the memory using the reverse signal, a lookup table to compare the current data and the previous frame data reversely converted by the data reverse transition part to select a modulated data, and a display drive circuit to display the data from the lookup table on a liquid crystal display panel.
    Type: Application
    Filed: December 31, 2007
    Publication date: January 1, 2009
    Inventors: Sung Jo Koo, Su Hyuk Jang, Song Jae Lee, Hong Sung Song, Woong Ki Min
  • Publication number: 20080316161
    Abstract: A liquid crystal display includes a liquid crystal display panel including a plurality of data lines, a plurality of gate lines crossing the plurality of data lines, and a plurality of liquid crystal cells defined as a first and second liquid crystal cell groups, a data driving circuit to supply a data voltage to the data lines in response to a polarity control signal, a gate driving circuit to supply a scanning pulse that swings between a gate high voltage and a gate low voltage to the gate lines, a first logic circuit to generate the polarity control signal differently for each frame period to maintain a polarity of the data voltage charged in the first liquid crystal cell group, and to invert one time a polarity of the data voltage charged in the second liquid crystal cell group for two frame periods, and a second logic circuit to control the gate driving circuit to decrease the gate high voltage of the scanning pulse to a modulated voltage between the gate high voltage and the gate low voltage for a prede
    Type: Application
    Filed: December 31, 2007
    Publication date: December 25, 2008
    Inventors: Hong Sung Song, Woong Ki Min, Su Hyuk Jang
  • Publication number: 20080297457
    Abstract: A liquid crystal display (LCD) device and a driving method where the LCD device includes a data controller for interleaving one of black gray scale data and intermediate gray scale data into input digital video data to input digital video data in a specific period preceding a second one of two successive frame periods in which data voltages having the same polarity are successively supplied to liquid crystal cells. A timing signal controller generates a data timing signal and a gate timing signal, based on an input timing signal, and accelerates a frequency of the data timing signal and a frequency of the gate timing signal in the specific period. A data driving circuit is included for converting the interleaved digital video data into an analog voltage in response to the data timing signal, and supplying the analog voltage to data lines in the specific period.
    Type: Application
    Filed: May 22, 2008
    Publication date: December 4, 2008
    Inventors: Hong Sung Song, Woong Ki Min, Su Hyuk Jang
  • Publication number: 20080291189
    Abstract: A liquid crystal display (LCD) device includes a liquid crystal display panel having a matrix of liquid crystal cells defined by crossings of the data lines and the gate lines. The LCD device includes a data driving circuit for inverting a polarity of a data voltage in response to a polarity control signal, and supplying the polarity-inverted data voltage to an associated one of the data lines in response to a source output enable signal; a gate driving circuit for sequentially supplying a scan voltage to each of the gate lines in response to a gate output enable signal; and a controller for modulating the polarity control signal such that data voltages having the same polarity are respectively supplied to liquid crystal cells along one gate line in consecutive frame periods and generating the source output enable signal and the gate output enable signal.
    Type: Application
    Filed: May 22, 2008
    Publication date: November 27, 2008
    Inventors: Hong Sung Song, Woong Ki Min, Su Hyuk Jang
  • Publication number: 20080284941
    Abstract: A lamp electrode printed circuit board of a backlight unit includes an insulating substrate, first and second conductive patterns on the insulating substrates along a first direction and in parallel, a connecting pattern extending from one of the first and second conductive patterns, a connecting pad at one end of the connecting pattern, auxiliary patterns extending from an edge of the connecting pad, and lamp holders electrically connected to the first and second conductive patterns and spaced apart from each other along the first direction.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 20, 2008
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Byung-Jin Choi, Hong-Sung Song, Woong-Ki Min
  • Patent number: RE40864
    Abstract: A data transmission apparatus a data transmitter selectively inverting data and transmitting the selectively inverted data. A data receiver selectively re-inverts the selectively inverted data from the data transmitter and reconstructs the inverted data into the original data. The inversion operation of the data transmitter and the data receiver is controlled by a mode controller. The mode controller receives data having a number of bits along with a clock signal to detect a number of transitions every period of the clock signal, and controls driving modes of the data transmitter and the data receiver in accordance with the detected number of transitions.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: July 28, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Jin Cheol Hong, Hong Sung Song