Patents by Inventor Ji-Heum Uh

Ji-Heum Uh 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: 6795154
    Abstract: An apparatus for cutting liquid crystal display panels and a cutting method using the same are disclosed in the present invention. The apparatus includes a first scribing unit sequentially forming a plurality of first scribing lines on surfaces of first and second mother substrates having unit liquid crystal display panels and cutting the first and second mother substrates along the first scribing lines, a first turning unit turning the cut first and second mother substrates by 90°, and at least two second scribing units sequentially forming a plurality of second scribing lines on the surfaces of the first and second mother substrates and cutting the first and second mother substrates along the second scribing lines.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: September 21, 2004
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Ji-Heum Uh, Sang-Sun Shin
  • Publication number: 20040163449
    Abstract: An apparatus and a method testing liquid crystal display panel which are able to test whether or not burr remains on longer sides and on shorter sides of a unit liquid crystal display panel using first to fourth testing bars in a touch method, and able to measure a distance between the longer sides and a distance between the shorter sides of the unit liquid crystal display panel.
    Type: Application
    Filed: March 2, 2004
    Publication date: August 26, 2004
    Inventors: Ji-Heum Uh, Sang-Sun Shin
  • Patent number: 6781402
    Abstract: An apparatus and a method testing liquid crystal display panel which are able to test whether or not burr remains on longer sides and on shorter sides of a unit liquid crystal display panel using first to fourth testing bars in a touch method, and able to measure a distance between the longer sides and a distance between the shorter sides of the unit liquid crystal display panel.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: August 24, 2004
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Ji-Heum Uh, Sang-Sun Shin
  • Publication number: 20040074366
    Abstract: An apparatus for cutting liquid crystal display panels is disclosed in the present invention. The apparatus includes at least one table receiving bonded mother substrates having a plurality of unit liquid crystal display panels, at least one cutting wheel forming a scribing line on a surface of the bonded mother substrates, and a suction unit coupled to the at least one cutting wheel and sucking in glass debris on the surface of the bonded mother substrates.
    Type: Application
    Filed: June 6, 2003
    Publication date: April 22, 2004
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventors: Hun-Jun Choo, Ji-Heum Uh, Sang-Sun Shin, Hwa-Seob Shim, Jong-Go Lim
  • Publication number: 20030230468
    Abstract: A conveyor system for conveying a liquid crystal panel includes rotating rollers. The rotating rollers include a more than one supporting end arranged along one direction and separated by a width. The rotating roller includes and at least one motor receiving to calculate data of standard requirements of the liquid crystal panel logically and numerically so as to adjust the width automatically. Therefore, the present invention enables to adjust a width between rotating rollers by automating a conveyor system.
    Type: Application
    Filed: November 26, 2002
    Publication date: December 18, 2003
    Inventors: Ji Heum Uh, Kyung Su Chae
  • Publication number: 20030190863
    Abstract: An apparatus and method for fabricating a liquid crystal display panel are disclosed. In case of the single mode that liquid crystal display panels are fabricated with the same size on a large glass substrate, defective unit liquid crystal display panels are kept and discarded not to proceed with a follow-up process. Thus, a material waste is restrained and a yield can be improved. Meanwhile, in case of the multi-mode that liquid crystal display panels are fabricated with difference sizes on a large glass substrate, sub-models are kept, and then after completing the process for the main models, a follow-up process if performed on the sub-models. Thus, use efficiency of the glass substrate can be maximized to improve a productivity and a unit cost of the product can be reduced.
    Type: Application
    Filed: October 1, 2002
    Publication date: October 9, 2003
    Inventors: Ji-Heum Uh, Sang-Sun Shin
  • Publication number: 20030172518
    Abstract: A processing line for liquid crystal display fabrication. The process line reduces unnecessary processing steps by removing known defective (NG) individual liquid crystal panels before subsequent processing, with the knowledge about defects depending on stored information.
    Type: Application
    Filed: June 28, 2002
    Publication date: September 18, 2003
    Inventors: Ji Heum Uh, Kyung Su Chae
  • Publication number: 20030169066
    Abstract: An apparatus and a method testing liquid crystal display panel which are able to test whether or not burr remains on longer sides and on shorter sides of a unit liquid crystal display panel using first to fourth testing bars in a touch method, and able to measure a distance between the longer sides and a distance between the shorter sides of the unit liquid crystal display panel.
    Type: Application
    Filed: October 1, 2002
    Publication date: September 11, 2003
    Inventors: Ji-Heum Uh, Sang-Sun Shin
  • Publication number: 20030155392
    Abstract: An apparatus for cutting liquid crystal display panels and a cutting method using the same are disclosed in the present invention. The apparatus includes a first scribing unit sequentially forming a plurality of first scribing lines on surfaces of first and second mother substrates having unit liquid crystal display panels and cutting the first and second mother substrates along the first scribing lines, a first turning unit turning the cut first and second mother substrates by 90°, and at least two second scribing units sequentially forming a plurality of second scribing lines on the surfaces of the first and second mother substrates and cutting the first and second mother substrates along the second scribing lines.
    Type: Application
    Filed: December 24, 2002
    Publication date: August 21, 2003
    Applicant: LG.Philips LCD Co., Ltd.
    Inventors: Ji-Heum Uh, Sang-Sun Shin