Patents by Inventor Kyung Su Chae

Kyung Su Chae 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: 7216584
    Abstract: A method of forming an alignment layer for a liquid crystal display device including: attaching a transfer film on a printing roll, the transfer film including a convex portion having first-sized halftone dots and second-sized halftone dots; positioning a substrate on a printing table; providing aligning solution on an anilox roll using a doctor roll; and transferring the aligning solution on the anilox roll to the transfer film while moving the printing table and rotating the printing roll, and then coating the aligning solution on the substrate to thereby form an alignment layer on the substrate.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: May 15, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Young-Sang Byun, Kyung-Su Chae, Heon-do Yun
  • Publication number: 20070027575
    Abstract: A substrate transfer system is used in fabricating a liquid crystal display (LCD) device. The system includes a cassette having a bar code, a cassette stocker to store the cassette; an auto guided vehicle that is able to transfer the cassette; a moving path unit to determine a moving path of the auto guided vehicle, a plurality of process stages at which processes are conducted on a substrate during fabrication of the LCD device, and a host to control the cassette stocker, the auto guided vehicle and the process stages. At least one of the auto guided vehicle and the cassette stocker having a bar code reader.
    Type: Application
    Filed: September 29, 2006
    Publication date: February 1, 2007
    Inventors: Kyung-Su Chae, Hyun-Ho Song
  • Patent number: 7143493
    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: Grant
    Filed: December 6, 2004
    Date of Patent: December 5, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Ji Heum Uh, Kyung Su Chae
  • Patent number: 7139640
    Abstract: A substrate transfer system is used in fabricating a liquid crystal display (LCD) device. The system includes a cassette having a bar code, a cassette stocker to store the cassette; an auto guided vehicle that is able to transfer the cassette; a moving path unit to determine a moving path of the auto guided vehicle, a plurality of process stages at which processes are conducted on a substrate during fabrication of the LCD device, and a host to control the cassette stocker, the auto guided vehicle and the process stages. At least one of the auto guided vehicle and the cassette stocker having a bar code reader.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: November 21, 2006
    Assignee: LG.Philips LCD. Co., Ltd.
    Inventors: Kyung-Su Chae, Hyun-Ho Song
  • Patent number: 7102726
    Abstract: Disclosed is a system for fabricating a liquid crystal display using liquid crystal dropping and a method of fabricating a liquid crystal display using the same. The present invention includes a liquid crystal forming line dropping liquid crystals on the first substrate, a sealant forming line forming the sealant on the second substrate, and a bonding and hardening line bonding the two substrates to each other and hardening the sealant, printing a sealant, bonding the substrates each other, and hardening the sealant and an inspection process line of cutting the bonded substrates into panel units and grinding and inspecting the unit panels.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: September 5, 2006
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Yong Sang Byun, Moo Yeol Park, Sung Su Jung, Sung Chun Kang, Jong Woo Kim, Young Hun Ha, Sang Seok Lee, Sang Ho Park, Hun Jun Choo, Hyug Jin Kweon, Kyung Su Chae, Hae Joon Son, Sang Sun Shin, Jong Go Lim
  • Patent number: 7098988
    Abstract: A method of fabricating a liquid crystal display device includes providing a first substrate, forming an alignment layer on the first substrate using an ink jet method to form a plurality of holes that expose portions of the first substrate, and forming a spacer within each of the plurality of holes using the ink jet method.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: August 29, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Kyung-Su Chae, Hyun-Ho Song
  • Publication number: 20060187400
    Abstract: A method of fabricating a liquid crystal display device includes providing a first substrate, forming an alignment layer on the first substrate using an ink jet method to form a plurality of holes that expose portions of the first substrate, and forming a spacer within each of the plurality of holes using the ink jet method.
    Type: Application
    Filed: April 21, 2006
    Publication date: August 24, 2006
    Inventors: Kyung-Su Chae, Hyun-Ho Song
  • Patent number: 7089814
    Abstract: An apparatus for inspecting rubbing inferiority of an alignment film of a liquid crystal display device by spraying moisture particles, the apparatus including a moisture storing unit for storing moisture, and a moisture particle generating unit for pelletizing moisture ejected from the moisture storing unit and spraying on a substrate.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: August 15, 2006
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Kyung-Su Chae, Hyun-Ho Song
  • Publication number: 20060125260
    Abstract: An apparatus for conveying a liquid crystal display panel for moving various size unit liquid crystal display panels. The present invention includes a horizontal driving unit controlling a revolution of a motor, a plurality of screw shafts protruding out of the horizontal driving unit. A pair of robot arms having first and second ends, the first ends are supported by corresponding screw shafts and extend from the screw shafts, and a plurality of clamping units connected to the second ends of the robot arms.
    Type: Application
    Filed: February 7, 2006
    Publication date: June 15, 2006
    Inventors: Kyung-Su Chae, Jong-Go Lim
  • Patent number: 7042545
    Abstract: A liquid crystal display device including opposite first and second substrates, and column spacers between the first and second substrates, the column spacers formed such that the column spacers differ in size as positions of the column spacers differ, thereby accommodating the variation in the gap between substrates when liquid crystal is concentrated at a lower end of the display due to gravity when a large LCD panel is in a vertical position.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: May 9, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Yong Sang Byun, Kyung Su Chae
  • Patent number: 7027123
    Abstract: A method of fabricating a liquid crystal display device includes forming a first testing terminal along a side surface of a first substrate, forming a second testing terminal along a side surface of a second substrate, attaching the first and second substrates together to expose the first and second testing terminals, and conducting a lighting test using the first and second testing terminals.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: April 11, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Kyung-Su Chae, Yong-Sang Byun
  • Patent number: 6892437
    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: Grant
    Filed: June 28, 2002
    Date of Patent: May 17, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Ji Heum Uh, Kyung Su Chae
  • Publication number: 20050062926
    Abstract: An indicator for deciding a grinding amount of a liquid crystal display panel and a method for detecting grinding failure using the same are disclosed in the present invention. The indicator includes at least one alignment mark formed at a gate pad unit and a data pad unit of a liquid crystal display panel, and at least one pattern for detecting a grinding amount between a first end portion of the gate pad unit and the alignment mark, and a second end portion of the data pad unit and the alignment mark.
    Type: Application
    Filed: November 8, 2004
    Publication date: March 24, 2005
    Inventors: Kyung-Su Chae, Hun-Jun Choo, Jong Lim
  • Publication number: 20050024579
    Abstract: A fabrication system for a liquid crystal display device includes an alignment layer line for forming an alignment layer on a first substrate and a second substrate, the first substrate and the second substrate being separately supplied thereto, a spacer scattering line for scattering spacers on one of the first substrate and the second substrate, a sealant coating line for coating a sealant material on one of the first substrate and the second substrate, an assembling line for bonding the first and second substrates together, a cutting line for separating the bonded first and second substrates into a plurality of liquid crystal display cells, and a liquid crystal layer line for injecting liquid crystal material into each of the liquid crystal display cells, wherein the alignment layer line, the spacer scattering line, the sealant coating line, the assembling line, the cutting line, and the liquid crystal line are positioned along a single fabrication line.
    Type: Application
    Filed: June 27, 2003
    Publication date: February 3, 2005
    Inventors: Young-Sang Byun, Kyung-Su Chae
  • Patent number: 6825897
    Abstract: An indicator for deciding a grinding amount of a liquid crystal display panel and a method for detecting grinding failure using the same are disclosed in the present invention. The indicator includes at least one alignment mark formed at a gate pad unit and a data pad unit of a liquid crystal display panel, and at least one pattern for detecting a grinding amount between a first end portion of the gate pad unit and the alignment mark, and a second end portion of the data pad unit and the alignment mark.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: November 30, 2004
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Kyung-Su Chae, Hun-Jun Choo, Jong Go Lim
  • Publication number: 20040134290
    Abstract: An apparatus for inspecting rubbing inferiority of an alignment film of a liquid crystal display device by spraying moisture particles, the apparatus including a moisture storing unit for storing moisture, and a moisture particle generating unit for pelletizing moisture ejected from the moisture storing unit and spraying on a substrate.
    Type: Application
    Filed: December 29, 2003
    Publication date: July 15, 2004
    Inventors: Kyung-Su Chae, Hyun-Ho Song
  • Publication number: 20040131861
    Abstract: A device and method for forming an alignment layer of an LCD device are provided. In the device, a drying part is positioned vertically above a printing part, and an alignment layer is deposited on a substrate according to an inkjet method, so that it is possible to form the alignment layer on the substrate without relation to the size of the substrate. This improves the efficiency in using a clean room.
    Type: Application
    Filed: October 20, 2003
    Publication date: July 8, 2004
    Inventors: Kyung Su Chae, Young Sang Byun, Heon Do Yun
  • Publication number: 20040130671
    Abstract: A liquid crystal display device including opposite first and second substrates, and column spacers between the first and second substrates, the column spacers formed such that the column spacers differ in size as positions of the column spacers differ, thereby accommodating the variation in the gap between substrates when liquid crystal is concentrated at a lower end of the display due to gravity when a large LCD panel is in a vertical position.
    Type: Application
    Filed: June 25, 2003
    Publication date: July 8, 2004
    Inventors: Yong Sang Byun, Kyung Su Chae
  • Publication number: 20040125328
    Abstract: A method of fabricating a liquid crystal display device includes providing a first substrate, forming an alignment layer on the first substrate using an ink jet method to form a plurality of holes that expose portions of the first substrate, and forming a spacer within each of the plurality of holes using the ink jet method.
    Type: Application
    Filed: October 1, 2003
    Publication date: July 1, 2004
    Applicant: LG.Philips LCD Co., Ltd.
    Inventors: Kyung-Su Chae, Hyun-Ho Song
  • Publication number: 20040126540
    Abstract: A method of forming an alignment layer for a liquid crystal display device including: attaching a transfer film on a printing roll, the transfer film including a convex portion having first-sized halftone dots and second-sized halftone dots; positioning a substrate on a printing table; providing aligning solution on an anilox roll using a doctor roll; and transferring the aligning solution on the anilox roll to the transfer film while moving the printing table and rotating the printing roll, and then coating the aligning solution on the substrate to thereby form an alignment layer on the substrate.
    Type: Application
    Filed: December 11, 2003
    Publication date: July 1, 2004
    Applicant: LG.Philips LCD Co., Ltd.
    Inventors: Young-Sang Byun, Kyung-Su Chae, Heon-Do Yun