Patents by Inventor Hwan Seong Yu

Hwan Seong Yu 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: 7764341
    Abstract: Disclosed are a single unit liquid crystal display touch panel and a method of fabricating the same. The single unit liquid crystal display touch panel includes a backlight unit, a liquid crystal display panel on the backlight unit, a touch panel on the liquid crystal display panel, and a light-shielding sidewall at a lateral side of the touch panel to shield a light leakage.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: July 27, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Hwan Seong Yu, Yong Ik Bang
  • Patent number: 7633564
    Abstract: A touch panel for a display device and a method of fabricating the same are disclosed. The touch panel for the display device includes upper and lower substrates, first and second transparent electrodes on opposing surfaces of the upper and lower substrates, a plurality of metal electrodes in a circumference of the first and second transparent electrodes, and a flexible printed cable having a plurality of signal applying lines extended from the upper and lower substrates to a rear side of the display device for applying signal voltages to the metal electrodes, wherein the flexible printed cable is bent at a corner of the upper and lower substrates from a top to a bottom of the display device, and has a first part extended from the corner of the display device and a second part extended from the first part and the first and second parts being perpendicular to each other.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: December 15, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hee Jung Hong, Hwan Seong Yu, Byeong Hyeon Ahn
  • Patent number: 7336261
    Abstract: A touch panel display apparatus includes an upper sheet having an upper transparent film formed of one of a crystalline transparent conductive material and an amorphous transparent conductive material, and a lower sheet having a lower transparent film formed of one of an other one of the crystalline transparent conductive material and the amorphous transparent conductive material.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: February 26, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Hwan Seong Yu
  • Patent number: 7259804
    Abstract: The present invention discloses a method of fabricating a touch panel for a liquid crystal display device including forming a parent touch panel having a plurality of unit touch panels and a parent polarizer, laminating the parent touch panel and the parent polarizer, and cutting the laminated parent touch panel and parent polarizer into a plurality of single touch panel units and forming a plurality of polarizer integrated touch panels.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: August 21, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hwan Seong Yu, Yong Ik Bang
  • Patent number: 7215331
    Abstract: A touch panel includes first and second substrates. Each substrate includes an extension formed at one side thereof, first and second transparent electrodes on each of the surfaces of the first and second substrates facing each other, and a signal line bonded to the transparent electrodes at the extension, for applying a signal to each transparent electrode.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: May 8, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: In Duk Song, Yong Ik Bang, Hwan Seong Yu
  • Patent number: 7053968
    Abstract: A liquid crystal display device with a touch panel and a method of fabricating the same are disclosed in the present invetion. The liquid crystal dispel device with a touch panel includes a liquid crystal display device displaying a picture image, a digitizer detecting a position of a stylus pen and located below the liquid crystal display device, a passivation layer on an upper surface of the liquid crystal display device, and a top case securing both the liquid crystal display device and the passivation layer.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: May 30, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hee Jung Hong, Hwan Seong Yu
  • Patent number: 6972750
    Abstract: A touch panel integrated liquid crystal display panel, includes a liquid crystal display panel displaying a picture by driving liquid crystal, a polarizer formed at the top of the liquid crystal display panel, and a touch panel with a separation tag extending outwards from at least one side of the top of the polarizer.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: December 6, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Hwan Seong Yu
  • Patent number: 6914640
    Abstract: A touch panel integrated liquid crystal display device includes a liquid crystal display panel, a touch panel formed on the liquid crystal display panel, a polarizer formed between the liquid crystal display panel and the touch panel, a first adhesive formed between the touch panel and the polarizer, and a second adhesive formed between the polarizer and the liquid crystal display panel, wherein an adhesive strength of the second adhesive is larger than an adhesive strength of the first adhesive.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: July 5, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventor: Hwan Seong Yu
  • Publication number: 20040222974
    Abstract: A touch panel for a display device and a method of fabricating the same are disclosed. The touch panel for the display device includes upper and lower substrates, first and second transparent electrodes on opposing surfaces of the upper and lower substrates, a plurality of metal electrodes in a circumference of the first and second transparent electrodes, and a flexible printed cable having a plurality of signal applying lines extended from the upper and lower substrates to a rear side of the display device for applying signal voltages to the metal electrodes, wherein the flexible printed cable is bent at a corner of the upper and lower substrates from a top to a bottom of the display device, and has a first part extended from the corner of the display device and a second part extended from the first part and the first and second parts being perpendicular to each other.
    Type: Application
    Filed: December 23, 2003
    Publication date: November 11, 2004
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventors: Hee Jung Hong, Hwan Seong Yu, Byeong Hyeon Ahn
  • Publication number: 20040223089
    Abstract: A liquid crystal display device with a touch panel and a method of fabricating the same are disclosed in the present invetion. The liquid crystal dispel device with a touch panel includes a liquid crystal display device displaying a picture image, a digitizer detecting a position of a stylus pen and located below the liquid crystal display device, a passivation layer on an upper surface of the liquid crystal display device, and a top case securing both the liquid crystal display device and the passivation layer.
    Type: Application
    Filed: December 23, 2003
    Publication date: November 11, 2004
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventors: Hee Jung Hong, Hwan Seong Yu
  • Publication number: 20040212749
    Abstract: The present invention discloses a method of fabricating a touch panel for a liquid crystal display device including forming a parent touch panel having a plurality of unit touch panels and a parent polarizer, laminating the parent touch panel and the parent polarizer, and cutting the laminated parent touch panel and parent polarizer into a plurality of single touch panel units and forming a plurality of polarizer integrated touch panels.
    Type: Application
    Filed: December 22, 2003
    Publication date: October 28, 2004
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventors: Hwan Seong Yu, Yong Ik Bang
  • Publication number: 20040141110
    Abstract: Disclosed are a single unit liquid crystal display touch panel and a method of fabricating the same. The single unit liquid crystal display touch panel includes a backlight unit, a liquid crystal display panel on the backlight unit, a touch panel on the liquid crystal display panel, and a light-shielding sidewall at a lateral side of the touch panel to shield a light leakage.
    Type: Application
    Filed: December 22, 2003
    Publication date: July 22, 2004
    Applicant: LG. PHILIPS LCD CO., LTD.
    Inventors: Hwan Seong Yu, Yong Ik Bang
  • Patent number: 6750927
    Abstract: An LCD (Liquid Crystal Display) fitted with an EGIP (Electric Graphic Input Panel) is provided. The LCD includes a crystal panel, a light plate, and a light source, which are encased in a case. The EGIP is fitted over the liquid crystal panel and the case. Eventually, a dead space in the range of 6-7 mm is secured to permit an easy repair of the EGIP, to prevent electric short occurrence of the touch panel electrodes, and to allow formation of a touch panel electrode with more than five lines.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: June 15, 2004
    Assignee: LG. Philips LCD Co., LTD
    Inventors: Hwan Seong Yu, Joo Soo Lim
  • Patent number: 6734931
    Abstract: A color filter substrate includes a black matrix and red, green and blue color filters. The color filter substrate has an identification mark formed in the black matrix such that the information about the color filter substrate is easily recognized. The identification mark includes such information as the manufacturer, color filter type, fabrication method and/or type of black matrix.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: May 11, 2004
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Hwan-Seong Yu
  • Patent number: 6731368
    Abstract: In the typical LCD device, the ON/OFF inspection is performed by unit cell. However, in the case of the small size LCD device, since the liquid crystal cell substrate has many unit cells, the total inspection time is too long and the long handling time contributes to increasing the number of inferior cells. To solve these problems, the ON/OFF inspection of the liquid crystal cell for the small size LCD device having many unit cells is simultaneously performed for the entire liquid crystal cell substrate before cutting into the unit cells. Thus, the number of damaged cells during the inspection process and the process time can be reduced, and the yield can increase.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: May 4, 2004
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Hwan-Seong Yu, Gyu-Su Cho
  • Publication number: 20030122800
    Abstract: A touch panel integrated liquid crystal display device includes a liquid crystal display panel, a touch panel formed on the liquid crystal display panel, a polarizer formed between the liquid crystal display panel and the touch panel, a first adhesive formed between the touch panel and the polarizer, and a second adhesive formed between the polarizer and the liquid crystal display panel, wherein an adhesive strength of the second adhesive is larger than an adhesive strength of the first adhesive.
    Type: Application
    Filed: December 26, 2002
    Publication date: July 3, 2003
    Applicant: LG, Philips LCD Co., Ltd.
    Inventor: Hwan Seong Yu
  • Publication number: 20030122799
    Abstract: A touch panel display apparatus includes an upper sheet having an upper transparent film formed of one of a crystalline transparent conductive material and an amorphous transparent conductive material, and a lower sheet having a lower transparent film formed of one of an other one of the crystalline transparent conductive material and the amorphous transparent conductive material.
    Type: Application
    Filed: December 24, 2002
    Publication date: July 3, 2003
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventor: Hwan Seong Yu
  • Publication number: 20030122801
    Abstract: A touch panel integrated liquid crystal display panel, includes a liquid crystal display panel displaying a picture by driving liquid crystal, a polarizer formed at the top of the liquid crystal display panel, and a touch panel with a separation tag extending outwards from at least one side of the top of the polarizer.
    Type: Application
    Filed: December 26, 2002
    Publication date: July 3, 2003
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventor: Hwan Seong Yu
  • Publication number: 20030095111
    Abstract: A touch panel includes first and second substrates. Each substrate includes an extension formed at one side thereof, first and second transparent electrodes on each of the surfaces of the first and second substrates facing each other, and a signal line bonded to the transparent electrodes at the extension, for applying a signal to each transparent electrode.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 22, 2003
    Inventors: In-Duk Song, Yong Ik Bang, Hwan Seong Yu
  • Publication number: 20020109803
    Abstract: An LCD (Liquid Crystal Display) fitted with an EGIP (Electric Graphic Input Panel) is provided. The LCD includes a crystal panel, a light plate, and a light source, which are encased in a case. The EGIP is fitted over the liquid crystal panel and the case. Eventually, a dead space in the range of 6-7 mm is secured to permit an easy repair of the EGIP, to prevent electric short occurrence of the touch panel electrodes, and to allow formation of a touch panel electrode with more than five lines.
    Type: Application
    Filed: December 28, 2001
    Publication date: August 15, 2002
    Inventors: Hwan Seong Yu, Joo-Soo Lim