Patents by Inventor See Hwa Jeong

See Hwa Jeong 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: 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
  • Patent number: 7616277
    Abstract: A transflective LCD device includes first and second transparent substrates spaced apart from each other and having a reflective portion and a transmissive portion, an insulator on the first transparent substrate, a passivation layer on the insulator within the reflective portion, a reflector on the passivation layer, a transparent pixel electrode disposed over the insulator covering the reflector and the passivation layer, a buffer pattern disposed on a rear surface of the second substrate, the buffer pattern having a saw-tooth shape corresponding to the reflective portion, a color filter on the rear surface of the second substrate covering the buffer pattern, the color filter having a first thickness in the transmissive portion and a second thickness in the reflective portion, a transparent common electrode on a rear surface of the color filter, and a liquid crystal layer between the transparent pixel electrode and the transparent common electrode.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: November 10, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Sang-Min Jang, See-Hwa Jeong, Min-Joo Kim
  • 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: 7532299
    Abstract: A method for fabrication a substrate for a liquid crystal display device includes: forming a color filter layer on a substrate; coating an organic layer on the color filter layer; irradiating a first light onto the organic layer; irradiating a second light onto the organic layer through a mask having a transmitting portion and a shielding portion, an energy density of the first light smaller than an energy density of the second light; and forming an overcoat layer and a column spacer by developing the organic layer.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: May 12, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Seung-Han Paek, Yong-Jin Cho, Jung-Il Lee, See-Hwa Jeong
  • 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
  • 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
  • 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: 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: 20070008469
    Abstract: A transflective LCD device includes first and second transparent substrates spaced apart from each other and having a reflective portion and a transmissive portion, an insulator on the first transparent substrate, a passivation layer on the insulator within the reflective portion, a reflector on the passivation layer, a transparent pixel electrode disposed over the insulator covering the reflector and the passivation layer, a buffer pattern disposed on a rear surface of the second substrate, the buffer pattern having a saw-tooth shape corresponding to the reflective portion, a color filter on the rear surface of the second substrate covering the buffer pattern, the color filter having a first thickness in the transmissive portion and a second thickness in the reflective portion, a transparent common electrode on a rear surface of the color filter, and a liquid crystal layer between the transparent pixel electrode and the transparent common electrode.
    Type: Application
    Filed: September 15, 2006
    Publication date: January 11, 2007
    Inventors: Sang-Min Jang, See-Hwa Jeong, Min-Joo Kim
  • Patent number: 7132846
    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: September 22, 2003
    Date of Patent: November 7, 2006
    Assignee: LG.Phillips LCD Co., Ltd.
    Inventors: Jong Dam Kim, Hyun Kyu Lee, Yong Jin Cho, See Hwa Jeong
  • Patent number: 7119864
    Abstract: A transflective LCD device includes first and second transparent substrates spaced apart from each other and having a reflective portion and a transmissive portion, an insulator on the first transparent substrate, a passivation layer on the insulator within the reflective portion, a reflector on the passivation layer, a transparent pixel electrode disposed over the insulator covering the reflector and the passivation layer, a buffer pattern disposed on a rear surface of the second substrate, the buffer pattern having a saw-tooth shape corresponding to the reflective portion, a color filter on the rear surface of the second substrate covering the buffer pattern, the color filter having a first thickness in the transmissive portion and a second thickness in the reflective portion, a transparent common electrode on a rear surface of the color filter, and a liquid crystal layer between the transparent pixel electrode and the transparent common electrode.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: October 10, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Sang-Min Jang, See-Hwa Jeong, Min-Joo Kim
  • Patent number: 7046030
    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 a substrate to inspect, wherein the substrate includes signal wirings, drive switches and capacitors formed in an effective display area of the substrate; radiating a light onto an inspection switch device and thereby supplying an inspection voltage from an inspection line to one of the drive switches through the signal wirings, so as to charge one of the capacitors; and determining if there is a defect in the effective display area of the substrate by reading the charged voltage of the capacitor.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: May 16, 2006
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Jong Dam Kim, Hyun Kyu Lee, Yong Jin Cho, See Hwa Jeong
  • Patent number: 7015994
    Abstract: A thin film transistor liquid crystal display is designed such that TFTs for driving green pixels are formed in the blue pixel regions. This improves the overall brightness of the liquid crystal display based on the human view-sensitive characteristics.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: March 21, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Yong Jin Cho, Jung Il Lee, Min Joo Kim, See Hwa Jeong
  • Patent number: 7009405
    Abstract: A method and apparatus tests a flat display device to inspect for shorts and open circuits in a signal wire by using a magnetic sensor. The inspection method and apparatus scans the magnetic sensor along signal wires in a scan direction crossing multiple signal wires and detects at least one of a short or an open circuit in the signal wires based on current detected by the magnetic sensor.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: March 7, 2006
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Sung Joon Bae, Jong Dam Kim, Hyun Kyu Lee, Yong Jin Cho, See Hwa Jeong
  • Publication number: 20050140915
    Abstract: A method for fabrication a substrate for a liquid crystal display device includes: forming a color filter layer on a substrate; coating an organic layer on the color filter layer; irradiating a first light onto the organic layer; irradiating a second light onto the organic layer through a mask having a transmitting portion and a shielding portion, an energy density of the first light smaller than an energy density of the second light; and forming an overcoat layer and a column spacer by developing the organic layer.
    Type: Application
    Filed: December 27, 2004
    Publication date: June 30, 2005
    Inventors: Seung-Han Paek, Yong-Jin Cho, Jung-Il Lee, See-Hwa Jeong
  • Publication number: 20040222816
    Abstract: A method and apparatus tests a flat display device to inspect for shorts and open circuits in a signal wire by using a magnetic sensor. The inspection method and apparatus scans the magnetic sensor along signal wires in a scan direction crossing multiple signal wires and detects at least one of a short or an open circuit in the signal wires based on current detected by the magnetic sensor.
    Type: Application
    Filed: September 26, 2003
    Publication date: November 11, 2004
    Inventors: Sung Joon Bae, Jong Dam Kim, Hyun Kyu Lee, Yong Jin Cho, See Hwa Jeong
  • Publication number: 20040222814
    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: Application
    Filed: September 25, 2003
    Publication date: November 11, 2004
    Inventors: Jong Dam Kim, Hyun Kyu Lee, Yong Jin Cho, See Hwa Jeong
  • Publication number: 20040222813
    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: Application
    Filed: September 22, 2003
    Publication date: November 11, 2004
    Inventors: Jong Dam Kim, Hyun Kyu Lee, Yong Jin Cho, See Hwa Jeong