Patents by Inventor Hyun-Kyu Lee

Hyun-Kyu Lee 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).

  • Patent number: 7652738
    Abstract: An array substrate for an in-plane switching mode liquid crystal display device includes a substrate, a gate line along a first direction on the substrate, a data line along a second direction and crossing the gate line to define a pixel region, a thin film transistor connected to the gate and data lines, a pixel electrode in the pixel region and connected to the thin film transistor, and a common electrode in the pixel region and arranged in an alternating pattern with the pixel electrode, wherein each of the pixel electrode and the common electrode includes a transparent conductive pattern, and one of the pixel electrode and the common electrode further includes an opaque conductive pattern having a more narrow width than the transparent conductive pattern.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: January 26, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Eui-Tae Kim, Byoung-Ho Lim, Hyun-Kyu Lee, Sang-Wook Park
  • Patent number: 7625770
    Abstract: A liquid crystal display and a fabricating method thereof for improving an aperture ratio are disclosed. A liquid crystal display (LCD) according to the present invention includes a gate line, a data line and a common line on the thin film transistor array substrate, the gate line crossing the data line to define a pixel region; a thin film transistor near the crossing of the gate line and the data line; a common electrode connected to the common line in the pixel region; and a pixel electrode connected to the thin film transistor in the pixel area for forming an in-plane electric field in association with the common electrode during an operation of the LCD, wherein an edge of the pixel electrode overlaps the common line with at least one insulating layer therebetween, and an edge of the common electrode overlaps the pixel electrode with said at least one insulating layer therebetween.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: December 1, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Kyu Lee, See Hwa Jeong, Seung Chan Choi
  • Publication number: 20090254963
    Abstract: A method and an apparatus for providing a virtual channel service are disclosed. The method includes maintaining a contents list recorded in a personal video recorder and a virtual channel information, determining a playback order of recorded contents included in the list in accordance with a preset algorithm, and playing back in sequence the recorded contents through a predetermined virtual channel. As a result, a user may approach easily to the recorded contents.
    Type: Application
    Filed: April 8, 2009
    Publication date: October 8, 2009
    Applicant: ALTICAST CORPORATION
    Inventors: You-Jin Lee, Sung-Woo Nam, Tae-Min Ahn, Hyo-Geun Wang, Hyun-Kyu Lee, Ji-Won Choi
  • Patent number: 7557886
    Abstract: A liquid crystal display device includes first and second substrates; a gate line and a data line on the first substrate to define a unit pixel having first and second sub-pixel regions; first and second switching devices in the first and second sub-pixel regions; a plurality of first and second common electrodes in the first and second sub-pixel regions; a plurality of first and second pixel electrodes in the first and second sub-pixel regions; a common line shared by the unit pixel and an adjacent unit pixel; and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: July 7, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Kyu Lee, Seung Chan Choi
  • Publication number: 20090137077
    Abstract: A liquid crystal display and a fabricating method thereof for improving an aperture ratio are disclosed. A liquid crystal display (LCD) according to the present invention includes a gate line, a data line and a common line on the thin film transistor array substrate, the gate line crossing the data line to define a pixel region; a thin film transistor near the crossing of the gate line and the data line; a common electrode connected to the common line in the pixel region; and a pixel electrode connected to the thin film transistor in the pixel area for forming an in-plane electric field in association with the common electrode during an operation of the LCD, wherein an edge of the pixel electrode overlaps the common line with at least one insulating layer therebetween, and an edge of the common electrode overlaps the pixel electrode with said at least one insulating layer therebetween.
    Type: Application
    Filed: January 16, 2009
    Publication date: May 28, 2009
    Inventors: Hyun Kyu Lee, See Hwa Jeong, Seung Chan Choi
  • Patent number: 7531372
    Abstract: A method of fabricating an array substrate includes forming a buffer layer on a metal substrate, forming a thin film transistor including a gate electrode, a source electrode and a drain electrode on the buffer layer, forming a pixel electrode contacting the drain electrode, removing the metal substrate to expose a lower surface of the buffer layer, and forming a plastic material beneath the buffer layer such that the plastic material contacts the exposed lower surface of the buffer layer.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: May 12, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun-Kyu Lee, Yong-In Park
  • Patent number: 7525336
    Abstract: A method and apparatus for testing a liquid crystal display device are provided to detect a defect location precisely and rapidly without requiring a jig. The method includes providing an inspection apparatus as a removable portion of the liquid crystal display device; inspecting the display part of the liquid crystal display device using the inspection apparatus; removing the inspection apparatus from the liquid crystal display device after the inspection is completed; and attaching driving circuits to the liquid crystal display device having the inspection apparatus removed therefrom.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: April 28, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Dam Kim, Hyun Kyu Lee, Yong Jin Cho, See Hwa Jeong
  • Publication number: 20090073374
    Abstract: A liquid crystal display and a method for fabricating the same are disclosed, which can yield maximum liquid crystal efficiency from all areas within the pixels by orienting the liquid crystals in a manner that the liquid crystals are twisted by 90° in an area above the electrodes and twisted by 180° in an area in-between the electrodes. The liquid crystal display device includes, a pixel electrode insulated from a counter electrode having a plurality of slits on a first substrate, a second substrate facing into and adhered to the first substrate and having a liquid crystal layer formed therebetween, and an orientation layer formed on each inner surface of the first substrate and the second substrate, wherein one orientation layer is oriented to be twisted by 90° from above the pixel electrode and the other orientation layer is oriented to be twisted by 180° from above the slit.
    Type: Application
    Filed: November 12, 2008
    Publication date: March 19, 2009
    Inventors: Hyun Kyu Lee, Seung Chan Choi
  • Patent number: 7495733
    Abstract: A liquid crystal display and a fabricating method thereof for improving an aperture ratio are disclosed. A liquid crystal display (LCD) according to the present invention includes a gate line, a data line and a common line on the thin film transistor array substrate, the gate line crossing the data line to define a pixel region; a thin film transistor near the crossing of the gate line and the data line; a common electrode connected to the common line in the pixel region; and a pixel electrode connected to the thin film transistor in the pixel area for forming an in-plane electric field in association with the common electrode during an operation of the LCD, wherein an edge of the pixel electrode overlaps the common line with at least one insulating layer there between, and an edge of the common electrode overlaps the pixel electrode with said at least one insulating layer therebetween.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: February 24, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Kyu Lee, See Hwa Jeong, Seung Chan Choi
  • Patent number: 7483114
    Abstract: A liquid crystal display device includes a plurality of guide walls formed at regular intervals on a first substrate, the guide walls extending lengthwise or widthwise within an active region of the first substrate, a liquid crystal material filled between the guide walls, and a second substrate being attached to the first substrate sandwiching the liquid crystal material therebetween.
    Type: Grant
    Filed: October 19, 2004
    Date of Patent: January 27, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Kyu Lee, Hyun Sang Chung, Young Suk Park
  • Patent number: 7466383
    Abstract: A liquid crystal display and a method for fabricating the same are disclosed, which can yield maximum liquid crystal efficiency from all areas within the pixels by orienting the liquid crystals in a manner that the liquid crystals are twisted by 90° in an area above the electrodes and twisted by 180° in an area in-between the electrodes. The liquid crystal display device includes, a pixel electrode insulated from a counter electrode having a plurality of slits on a first substrate, a second substrate facing into and adhered to the first substrate and having a liquid crystal layer formed therebetween, and an orientation layer formed on each inner surface of the first substrate and the second substrate, wherein one orientation layer is oriented to be twisted by 90° from above the pixel electrode and the other orientation layer is oriented to be twisted by 180° from above the slit.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: December 16, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Kyu Lee, Seung Chan Choi
  • Patent number: 7440063
    Abstract: A method of fabricating an FFS LCD is provided. The fabrication method comprises: forming a common electrode and gate metal on a board and etching them through a first mask process; forming a gate insulating layer, active layer and source/drain metal on the board; forming a channel in a TFT part, removing the gate metal in the pixel area part and opening a gate pad part; forming a passivation layer substantially on the board, and forming a contact hole on the TFT part, removing the active layer remaining from the pixel area part and exposing a gate pad part and a data pad part by a third mask process; and forming a pixel electrode substantially on the board, and forming a pixel electrode on regions contacting the drain electrode in the TFT part, having the opening in pixel area part and opened regions of the gate pad and data pad part through a fourth mask process.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: October 21, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Seung Chan Choi, Hyun Kyu Lee
  • Publication number: 20080136440
    Abstract: A method and apparatus for testing a liquid crystal display device are provided to detect a defect location precisely and rapidly without requiring a jig. The method includes providing an inspection apparatus as a removable portion of the liquid crystal display device; inspecting the display part of the liquid crystal display device using the inspection apparatus; removing the inspection apparatus from the liquid crystal display device after the inspection is completed; and attaching driving circuits to the liquid crystal display device having the inspection apparatus removed therefrom.
    Type: Application
    Filed: February 20, 2008
    Publication date: June 12, 2008
    Inventors: Jong Dam Kim, Hyun Kyu Lee, Yong Jin Cho, See Hwa Jeong
  • Patent number: 7369207
    Abstract: A liquid crystal display device including a substrate, a thin film transistor provided at an area adjacent to an intersection of a gate line and a data line on the substrate, a protective layer provided on the substrate to cover the thin film transistor, a pixel electrode provided on the protective layer and connected through the protective layer to the thin film transistor, a first hole in a surface of the pixel electrode and positioned above an adjacent gate line and a spacer positioned within the first hole.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: May 6, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jeong Hyun Kim, Jae Hong Jun, Hyun Kyu Lee
  • Patent number: 7362124
    Abstract: A method and apparatus are provided for inspecting an electrical defectiveness of a liquid crystal display substrate. The method includes shorting ESD protection devices with a conductive shorting bar to form a current path on each of signal wirings of the substrate, supplying a current to the signal wirings, and determining a defectiveness of the signal wirings depending on the current flowing on the signal wirings.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: April 22, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jong Dam Kim, Hyun Kyu Lee, Yong Jin Cho, See Hwa Jeong
  • Patent number: 7358756
    Abstract: A method and apparatus for testing a liquid crystal display device are provided to detect a defect location precisely and rapidly without requiring a jig. The method includes providing an inspection apparatus as a removable portion of the liquid crystal display device; inspecting the display part of the liquid crystal display device using the inspection apparatus; removing the inspection apparatus from the liquid crystal display device after the inspection is completed; and attaching driving circuits to the liquid crystal display device having the inspection apparatus removed therefrom.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: April 15, 2008
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Jong Dam Kim, Hyun Kyu Lee, Yong Jin Cho, See Hwa Jeong
  • Patent number: 7301360
    Abstract: A novel method and apparatus inspects liquid crystal display. The method and apparatus for inspecting the flat display device scans at least one signal wire by using a magnetic sensor and detects a resistance change of the magnetic sensor to perceive a short in the signal wire. Pixels can be tested using an array of magnetic sensors configured such that each sensor in the array is smaller than the pixel.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: November 27, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jong Dam Kim, Hyun Kyu Lee, Yong Jin Cho, See Hwa Jeong
  • Publication number: 20070176281
    Abstract: A semiconductor package includes a substrate having a plurality of through holes for interconnecting electrically conductive traces formed on upper and lower surfaces of the substrate. The through holes are classified into a first set of through holes and a second set of through holes. The second set of through holes is located exterior of the first set of through holes, and surrounds the first set of through holes. A die is mounted on the upper surface of the substrate and is connected electrically to the first set of through holes. A metal shield is disposed on the substrate for enclosing the die therein and is connected electrically to the second set of through holes. A molding resin encapsulates the metal shield, the die on the substrate and fills a gap confined between the metal shield and the die.
    Type: Application
    Filed: January 29, 2007
    Publication date: August 2, 2007
    Inventors: Ki-Don Kim, Jae-Seon An, Seong-Chul Choi, Seong-Eun Sim, Hyun-Kyu Lee, Su-Jin Lim
  • Publication number: 20070153201
    Abstract: An array substrate for an IPS mode LCD device includes a gate line in a first direction on a substrate and a data line in a second direction over the substrate; a metal and a common lines in the second direction on the substrate and includes a plurality of first and second protruding portions in the first direction, respectively; a TFT connected to the gate and data lines; an insulating layer over the metal and common lines; a common electrode over the insulating layer and including a first common portion in the second direction and a plurality of second common portions in the first direction; and a pixel electrode over the insulating layer and including a first pixel portion in the second direction and a plurality of second pixel portions in the first direction, wherein the plurality of second common and pixel portions are alternately arranged.
    Type: Application
    Filed: December 21, 2006
    Publication date: July 5, 2007
    Inventors: Do-Young Lee, Byoung-Ho Lim, Hyun-Kyu Lee, Do-Sung Kim, Byung-Koo Kang, Eui-Tae Kim
  • Publication number: 20070153206
    Abstract: A backlight is provided. The backlight unit includes a bottom frame having a topside and a backside. At least one lamp is disposed on the topside of the bottom frame. A socket connector is disposed on a backside of the bottom frame. The socket connector is connected to the fluorescent lamp. A backlight circuit board having a plug connector is connected to the socket connector.
    Type: Application
    Filed: December 28, 2006
    Publication date: July 5, 2007
    Inventors: Byoung-Ho Lim, Hyun-Kyu Lee, Do-Sung Kim, Byung-Koo Kang, Do-Young Lee, Eui-Tae Kim, Sang-Wook Park