Patents by Inventor Hyug-Jin Kweon

Hyug-Jin Kweon 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: 7258894
    Abstract: A liquid crystal material dispensing apparatus includes a spacer height measuring unit for measuring a height of a spacer on a substrate, and a liquid crystal material dispensing system for determining an amount of the liquid crystal material to be dispensed on the substrate based upon the measured spacer height and for dispensing the liquid crystal material onto the substrate.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: August 21, 2007
    Assignee: L.G.Philips LCD Co., Ltd.
    Inventors: Wan-Soo Kim, Mu-Yeol Park, Sung-Su Jung, Hyug-Jin Kweon, Hae-Joon Son
  • Patent number: 7259802
    Abstract: A composite liquid crystal panel that interacts with an inspection station to simulate operating liquid crystal displays, and methods of fabricating and testing such liquid crystal panels. The composite liquid crystal panel enables the application of operating voltages to a plurality of unit liquid crystal panel areas. The inspection station provides operating power, illuminating light, and first and second polarizers. When power is applied to the composite liquid crystal panel an image is produced. That image will show defects in the unit liquid crystal panel areas. Beneficially, the inspection station tilts to enable easier problem identification.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: August 21, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hyug Jin Kweon, Hae Joon Son, Wan Soo Kim
  • Publication number: 20070101935
    Abstract: A liquid crystal material dispensing apparatus includes a spacer height measuring unit for measuring a height of a spacer on a substrate, and a liquid crystal material dispensing system for determining an amount of the liquid crystal material to be dispensed on the substrate based upon the measured spacer height and for dispensing the liquid crystal material onto the substrate.
    Type: Application
    Filed: November 17, 2006
    Publication date: May 10, 2007
    Inventors: Wan-Soo Kim, Mu-Yeol Park, Sung-Su Jung, Hyug-Jin Kweon, Hae-Joon Son
  • Patent number: 7196764
    Abstract: An LCD device and a method of manufacturing the same are disclosed, which prevents a liquid crystal from being filled imperfectly or excessively in an active region, thereby obtaining a uniform cell gap and improving picture quality characteristics. The LCD device includes a lower substrate and an upper substrate, a UV sealant between the lower and upper substrates, the UV sealant having a portion for controlling a liquid crystal flow at four corner regions, and a liquid crystal layer between the lower and upper substrates.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: March 27, 2007
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Joung Ho Ryu, Hyug Jin Kweon, Hae Joon Son
  • Publication number: 20060272734
    Abstract: A liquid crystal dispensing apparatus determines an amount of liquid crystal remaining within a liquid crystal container. The apparatus includes a liquid crystal dispensing unit for containing dispensable liquid crystal, capable of be dispensed directly onto a substrate and a main control unit for determining a total amount of liquid crystal dispensed onto the substrate based on a unitary amount of liquid crystal dispensed and the number of times the unitary amount was dispensed, and determining an amount of liquid crystal remaining by deducting the determined total amount dispensed from an initial amount of liquid crystal contained within the liquid crystal dispensing unit.
    Type: Application
    Filed: July 17, 2006
    Publication date: December 7, 2006
    Inventors: Hyug-Jin Kweon, Hae-Joon Son, Wan-Soo Kim
  • 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: 7100778
    Abstract: A cleaning jig for cleaning a plurality of liquid crystal containers includes a first fixing part provided with first holes within which flanges are arranged, a supporting die made, and a second fixing part for being coupled with the supporting die, arranged over the first fixing part, and including second holes arranged in correspondence with the first holes.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: September 5, 2006
    Assignee: LG.Phillips LCD Co., Ltd.
    Inventors: Hyug Jin Kweon, Hae Joon Son
  • Patent number: 7096897
    Abstract: A liquid crystal dispensing apparatus determines an amount of liquid crystal remaining within a liquid crystal container. The apparatus includes a liquid crystal dispensing unit for containing dispensable liquid crystal, capable of be dispensed directly onto a substrate and a main control unit for determining a total amount of liquid crystal dispensed onto the substrate based on a unitary amount of liquid crystal dispensed and the number of times the unitary amount was dispensed, and determining an amount of liquid crystal remaining by deducting the determined total amount dispensed from an initial amount of liquid crystal contained within the dispensing unit.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: August 29, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hyug-Jin Kweon, Hae-Joon Son, Wan-Soo Kim
  • Patent number: 7092067
    Abstract: A composite liquid crystal panel that interacts with an inspection station to simulate operating liquid displays, and methods of fabricating and testing such liquid crystal panels. The composite crystal panel enables the application of operating voltages to a plurality of unit liquid crystal panel areas. The inspection station provides operating power, illuminating light, and first and second polarizers. When power is applied to the composite liquid crystal panel an image is produced. That image will show defects in the unit liquid crystal panel areas. Beneficially, the inspection station tilts to enable easier problem identification.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: August 15, 2006
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Hyug Jin Kweon, Hae Joon Son, Wan Soo Kim
  • Patent number: 7021342
    Abstract: A liquid crystal dispensing apparatus dispenses liquid crystal onto a substrate. The liquid crystal dispensing apparatus includes a frame, a table, at least one liquid crystal discharge device, and a liquid crystal amount inspecting portion. The table is installed on the frame to have the substrate to be mounted thereon. The liquid crystal discharge device adjustably discharges an amount of liquid crystal, and the liquid crystal amount inspecting portion inspects a liquid crystal dispensing amount by comparing an actual amount of liquid crystal discharged from the liquid crystal discharge device with a preset liquid crystal amount. The liquid crystal discharge device includes a piston to perform ascending motions to draw in the liquid crystal and descending motions to discharge the liquid crystal with an angle of at least a portion of the liquid crystal discharge device determining a magnitude of the ascending/descending motion to control an amount of liquid crystal discharged.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: April 4, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Joung-Ho Ryu, Hyug-Jin Kweon, Hae-Joon Son, Kyu-Yong Bang, Joon-Young Kim, Man-Ho An, Yong-Kyu Seo
  • Publication number: 20050127109
    Abstract: A liquid crystal dispensing apparatus includes a needle sheet formed as a unitary piece for dispensing liquid crystal material contained within a liquid crystal container through a nozzle by selectively contacting a needle. The needle sheet includes a needle contacting portion for contacting the needle and a coupling portion for coupling the liquid crystal container to the nozzle. Therefore liquid crystal material is prevented from remaining within the needle sheet and the needle sheet can be easily cleaned.
    Type: Application
    Filed: February 3, 2005
    Publication date: June 16, 2005
    Inventors: Hyug-Jin Kweon, Hae-Joon Son
  • Patent number: 6894759
    Abstract: A method and system are used for manufacturing a liquid crystal display device such that a dispensing amount of liquid crystal is measured. The method includes steps of filling liquid crystal into a case portion of a liquid crystal dispenser, assembling the liquid crystal dispenser to set the case portion into the liquid crystal dispenser, setting the liquid crystal dispenser in a testing apparatus, testing dispensing characteristics of the liquid crystal dispenser, mounting the liquid crystal dispenser on a liquid crystal dispensing unit of a production line after the testing the dispensing characteristics, dispensing the liquid crystal from the liquid crystal dispenser onto a first substrate of the liquid crystal display device disposed beneath the mounted liquid crystal dispenser, and assembling the first substrate with a second substrate to form a liquid crystal display device.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: May 17, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hyug Jin Kweon, Hae Joon Son
  • Publication number: 20050099576
    Abstract: An LCD device and a method of manufacturing the same are disclosed, which prevents a liquid crystal from being filled imperfectly or excessively in an active region, thereby obtaining a uniform cell gap and improving picture quality characteristics. The LCD device includes a lower substrate and an upper substrate, a UV sealant between the lower and upper substrates, the UV sealant having a portion for controlling a liquid crystal flow at four corner regions, and a liquid crystal layer between the lower and upper substrates.
    Type: Application
    Filed: December 6, 2004
    Publication date: May 12, 2005
    Inventors: Joung Ho Ryu, Hyug Jin Kweon, Hae Joon Son
  • Patent number: 6874662
    Abstract: A liquid crystal dispensing apparatus includes a liquid crystal material container, a nozzle positioned at a lower portion of the liquid crystal container and having at least one groove formed at an exterior surface thereof, and a valve system for transmitting liquid crystal material from the liquid crystal material container to the nozzle by a gas pressure supplied to the liquid crystal material container.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: April 5, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Wan-Soo Kim, Hyug-Jin Kweon, Hae-Joon Son
  • Patent number: 6864948
    Abstract: A method and system are used for manufacturing a liquid crystal display device such that a dispensing amount of liquid crystal is measured. The method includes steps of filling liquid crystal into a case portion of a liquid crystal dispenser, assembling the liquid crystal dispenser to set the case portion into the liquid crystal dispenser, setting the liquid crystal dispenser in a testing apparatus, testing dispensing characteristics of the liquid crystal dispenser, mounting the liquid crystal dispenser on a liquid crystal dispensing unit of a production line after the testing the dispensing characteristics, dispensing the liquid crystal from the liquid crystal dispenser onto a first substrate of the liquid crystal display device disposed beneath the mounted liquid crystal dispenser, and assembling the first substrate with a second substrate to form a liquid crystal display device.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: March 8, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hyug Jin Kweon, Hae Joon Son
  • Patent number: 6863194
    Abstract: A liquid crystal dispensing apparatus includes a needle sheet formed as a unitary piece for dispensing liquid crystal material contained within a liquid crystal container through a nozzle by selectively contacting a needle. The needle sheet includes a needle contacting portion for contacting the needle and a coupling portion for coupling the liquid crystal container to the nozzle. Therefore liquid crystal material is prevented from remaining within the needle sheet and the needle sheet can be easily cleaned.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: March 8, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hyug-Jin Kweon, Hae-Joon Son
  • Patent number: 6863097
    Abstract: A liquid crystal dispensing apparatus dispenses liquid crystal onto a substrate. The liquid crystal dispensing apparatus includes a frame, a table, at least one liquid crystal discharge device, and a liquid crystal amount inspecting portion. The table is installed on the frame to have the substrate to be mounted thereon. The liquid crystal discharge device adjustably discharges an amount of liquid crystal, and the liquid crystal amount inspecting portion inspects a liquid crystal dispensing amount by comparing an actual amount of liquid crystal discharged from the liquid crystal discharge device with a preset liquid crystal amount. The liquid crystal discharge device includes a piston to perform ascending motions to draw in the liquid crystal and descending motions to discharge the liquid crystal with an angle of at least a portion of the liquid crystal discharge device determining a magnitude of the ascending/descending motion to control an amount of liquid crystal discharged.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: March 8, 2005
    Assignees: LG Philips LCD Co., Ltd., Top Engineering Co., Ltd.
    Inventors: Joung-Ho Ryu, Hyug-Jin Kweon, Hae-Joon Son, Kyu-Yong Bang, Joon-Young Kim, Man-Ho An, Yong-Kyu Seo
  • Publication number: 20050030470
    Abstract: A liquid crystal dispensing apparatus for dispensing liquid crystal onto a substrate includes a liquid crystal container, a nozzle structure, and a valve structure. The liquid crystal container contains the liquid crystal to be dispensed. The nozzle structure is disposed at a lower portion of the liquid crystal container, and the liquid crystal is dispensed through the nozzle structure onto the substrate. The valve structure is disposed to control flow of the liquid crystal from the liquid crystal container to the nozzle structure in accordance with a gas pressure provided from a gas input of the liquid crystal container. The liquid crystal container may be formed of substantially entirely of metal. An inside surface of the liquid crystal container may include a fluorine resin.
    Type: Application
    Filed: August 31, 2004
    Publication date: February 10, 2005
    Inventors: Wan-Soo Kim, Hyug-Jin Kweon, Hae-Joon Son
  • Publication number: 20050000983
    Abstract: A liquid crystal dispensing apparatus determines an amount of liquid crystal remaining within a liquid crystal container. The apparatus includes a liquid crystal dispensing unit for containing dispensable liquid crystal, capable of be dispensed directly onto a substrate and a main control unit for determining a total amount of liquid crystal dispensed onto the substrate based on a unitary amount of liquid crystal dispensed and the number of times the unitary amount was dispensed, and determining an amount of liquid crystal remaining by deducting the determined total amount dispensed from an initial amount of liquid crystal contained within the dispensing unit.
    Type: Application
    Filed: July 22, 2004
    Publication date: January 6, 2005
    Inventors: Hyug-Jin Kweon, Hae-Joon Son, Wan-Soo Kim
  • Publication number: 20040256025
    Abstract: A liquid crystal dispensing apparatus determines an amount of liquid crystal remaining within a liquid crystal container. The apparatus includes a liquid crystal dispensing unit for containing dispensable liquid crystal, capable of be dispensed directly onto a substrate and a main control unit for determining a total amount of liquid crystal dispensed onto the substrate based on a unitary amount of liquid crystal dispensed and the number of times the unitary amount was dispensed, and determining an amount of liquid crystal remaining by deducting the determined total amount dispensed from an initial amount of liquid crystal contained within the liquid crystal dispensing unit.
    Type: Application
    Filed: July 22, 2004
    Publication date: December 23, 2004
    Inventors: Hyug-Jin Kweon, Hae-Joon Son, Wan-Soo Kim