Patents by Inventor Yong-Keun Kwak

Yong-Keun Kwak 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: 9004005
    Abstract: An apparatus for aligning a dispenser includes a table having a first alignment mark, an alignment plate provided along at least one side of the table, at least one syringe supplying a dispensing material to the alignment plate through a nozzle provided at one end portion thereof to form a second alignment mark, a first image camera provided along a side of the syringe and detecting an image of the second alignment mark, a second image camera detecting an image of the first alignment mark, and an alignment control unit aligning the image of the second alignment mark and a first reference position, and aligning an image of the first alignment mark and a second reference position.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: April 14, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Patent number: 8225743
    Abstract: A dispenser for a liquid crystal display panel includes a table on which a substrate is loaded, an aligning substrate provided at least along one side of the substrate, at least one syringe having a nozzle at an end portion for supplying a material onto the substrate or onto the aligning substrate; and an image camera provided at a side of the syringe for detecting an image of the material on the substrate or on the aligning substrate.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: July 24, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Patent number: 8203685
    Abstract: A liquid crystal display panel and the method of manufacturing the same are disclosed. Because an overlap portion of the seal pattern that encompasses in a closed form the outer edge of the image display part is minimized, excessive distribution of sealant at the overlap portion may be prevented.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: June 19, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Sung Su Jung, Yong Keun Kwak
  • Patent number: 8147645
    Abstract: A syringe for fabricating a liquid crystal display panel is provided. The syringe includes a body, a plurality of nozzles, and a connection portion. The body portion has a dispensing material contained therein. The plurality of nozzles supply the dispensing material received from the body portion to a substrate of the liquid crystal display panel. The connection portion are provided on a bottom surface of the connection portion and couples the nozzles with the body portion.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: April 3, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Patent number: 8067057
    Abstract: A dispenser for a liquid crystal display panel includes a syringe having a nozzle provided at an end thereof, a body in which the syringe is mounted, a vertical driving stepping motor for moving the body in a vertical direction, a first sensor for detecting whether the nozzle of the syringe is in contact with a substrate, a second sensor for detecting a gap distance between the nozzle and the substrate, and a main unit for controlling the vertical driving stepping motor in response to an output from the second sensor to obtain a desired gap distance between the nozzle and the substrate.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: November 29, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Patent number: 7950345
    Abstract: A dispenser for a liquid crystal display panel includes a substrate on which a plurality of image display parts is formed, a table on which the substrate is loaded, a plurality of syringes for dispensing a material on the substrate, and a plurality of supports aligning and affixing the plurality of syringes, wherein at least a first predetermined number of the plurality of syringes is affixed and aligned to at least one of the plurality of supports.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: May 31, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Publication number: 20100144232
    Abstract: A dispenser for a liquid crystal display panel includes a table on which a substrate is loaded, an aligning substrate provided at least along one side of the substrate, at least one syringe having a nozzle at an end portion for supplying a material onto the substrate or onto the aligning substrate; and an image camera provided at a side of the syringe for detecting an image of the material on the substrate or on the aligning substrate.
    Type: Application
    Filed: February 18, 2010
    Publication date: June 10, 2010
    Inventors: Sung-Su JUNG, Yong-Keun KWAK
  • Patent number: 7691432
    Abstract: A dispenser for a liquid crystal display panel includes a syringe for applying a dispensing material to a substrate through a nozzle provided at one end portion thereof, a cap unit provided at the other end portion of the syringe, a gas supply unit for supplying a gas to the syringe through a gas pipe penetrating the cap unit, a valve provided in the gas pipe, a detecting unit for detecting a residual quantity of the dispensing material remaining in the syringe through a flow amount of gas supplied from the gas supply unit to the syringe and a controller for controlling the gas supply unit, the valve and the detecting unit.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: April 6, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Patent number: 7687101
    Abstract: A dispenser for a liquid crystal display panel includes a table on which a substrate is loaded, an aligning substrate provided at least along one side of the substrate, at least one syringe having a nozzle at an end portion for supplying a material onto the substrate or onto the aligning substrate; and an image camera provided at a side of the syringe for detecting an image of the material on the substrate or on the aligning substrate.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: March 30, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Patent number: 7678410
    Abstract: A dispenser for a liquid crystal display panel includes a substrate on which at least one image display is formed, a table on which the substrate having at least one image display part is loaded, and at least one syringe horizontally movable to change position in relation to the table for supplying a sealant on the substrate to form a seal pattern.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: March 16, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Publication number: 20100006029
    Abstract: An apparatus for aligning a dispenser includes a table having a first alignment mark, an alignment plate provided along at least one side of the table, at least one syringe supplying a dispensing material to the alignment plate through a nozzle provided at one end portion thereof to form a second alignment mark, a first image camera provided along a side of the syringe and detecting an image of the second alignment mark, a second image camera detecting an image of the first alignment mark, and an alignment control unit aligning the image of the second alignment mark and a first reference position, and aligning an image of the first alignment mark and a second reference position.
    Type: Application
    Filed: September 10, 2009
    Publication date: January 14, 2010
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Patent number: 7595083
    Abstract: An apparatus for aligning a dispenser includes a table having a first alignment mark, an alignment plate provided along at least one side of the table, at least one syringe supplying a dispensing material to the alignment plate through a nozzle provided at one end portion thereof to form a second alignment mark, a first image camera provided along a side of the syringe and detecting an image of the second alignment mark, a second image camera detecting an image of the first alignment mark, and an alignment control unit aligning the image of the second alignment mark and a first reference position, and aligning an image of the first alignment mark and a second reference position.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: September 29, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Publication number: 20090238950
    Abstract: A dispenser for a liquid crystal display panel includes a syringe having a nozzle provided at an end thereof, a body in which the syringe is mounted, a vertical driving stepping motor for moving the body in a vertical direction, a first sensor for detecting whether the nozzle of the syringe is in contact with a substrate, a second sensor for detecting a gap distance between the nozzle and the substrate, and a main unit for controlling the vertical driving stepping motor in response to an output from the second sensor to obtain a desired gap distance between the nozzle and the substrate.
    Type: Application
    Filed: June 1, 2009
    Publication date: September 24, 2009
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Patent number: 7547362
    Abstract: A dispenser for a liquid crystal display panel includes a syringe having a nozzle provided at an end thereof, a body in which the syringe is mounted, a vertical driving stepping motor for moving the body in a vertical direction, a first sensor for detecting whether the nozzle of the syringe is in contact with a substrate, a second sensor for detecting a gap distance between the nozzle and the substrate, and a main unit for controlling the vertical driving stepping motor in response to an output from the second sensor to obtain a desired gap distance between the nozzle and the substrate.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: June 16, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Publication number: 20080273158
    Abstract: A liquid crystal display panel and the method of manufacturing the same are disclosed. Because an overlap portion of the seal pattern that encompasses in a closed form the outer edge of the image display part is minimized, excessive distribution of sealant at the overlap portion may be prevented.
    Type: Application
    Filed: May 5, 2008
    Publication date: November 6, 2008
    Applicant: L.G.DISPLAY CO., LTD
    Inventors: Sung Su Jung, Yong Keun Kwak
  • Patent number: 7408614
    Abstract: A seal pattern structure for a liquid crystal display panel is disclosed. Because an overlap portion of the seal pattern that encompasses in a closed form the outer edge of the image display part is minimized, excessive distribution of sealant at the seal pattern overlap portion may be prevented. The liquid crystal display panel including the seal pattern includes a substrate having at least one image display part; a start pattern formed from a point spaced apart from the image display part to a point adjacent to an outer edge of the image display part; a main pattern connected to the start pattern and encompassing the outer edge of the image display part; and an end pattern connected to the main pattern and formed from the outer edge of the image display part to a point spaced apart from the image display part, wherein a connection part between the start pattern and the main pattern and a connection part between the main pattern and the end pattern cross each other.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: August 5, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Patent number: 7407553
    Abstract: A dispenser is provided for fabricating a liquid crystal display panel. The dispenser includes at least one dispensing unit to supply a dispensing material on a substrate, at least one support member to support and align the dispensing unit, and a plurality of syringes mounted on each dispensing unit.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: August 5, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Patent number: 7316248
    Abstract: A liquid crystal dispensing apparatus includes a container containing liquid crystal material; a discharge pump drawing in and discharging the liquid crystal material; a nozzle dispensing, onto a substrate, liquid crystal material discharged by the discharge pump; and a detector arranged near the nozzle to detect the presence of residual liquid crystal material accumulated on the surface of the nozzle. When the presence of residual liquid crystal material is detected, a dummy dispensing operation and/or a cleaning operation may be performed to remove the residual liquid crystal material.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: January 8, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jae-Gyu Jeong, Sang-Hyun Kim, Soo-Min Kwak, Yong-Keun Kwak
  • Publication number: 20050129850
    Abstract: An apparatus for aligning a dispenser includes a table having a first alignment mark, an alignment plate provided along at least one side of the table, at least one syringe supplying a dispensing material to the alignment plate through a nozzle provided at one end portion thereof to form a second alignment mark, a first image camera provided along a side of the syringe and detecting an image of the second alignment mark, a second image camera detecting an image of the first alignment mark, and an alignment control unit aligning the image of the second alignment mark and a first reference position, and aligning an image of the first alignment mark and a second reference position.
    Type: Application
    Filed: April 15, 2004
    Publication date: June 16, 2005
    Inventors: Sung-Su Jung, Yong-Keun Kwak
  • Publication number: 20050126475
    Abstract: A liquid crystal dispensing apparatus includes a container containing liquid crystal material; a discharge pump drawing in and discharging the liquid crystal material; a nozzle dispensing, onto a substrate, liquid crystal material discharged by the discharge pump; and a detector arranged near the nozzle to detect the presence of residual liquid crystal material accumulated on the surface of the nozzle. When the presence of residual liquid crystal material is detected, a dummy dispensing operation and/or a cleaning operation may be performed to remove the residual liquid crystal material.
    Type: Application
    Filed: November 16, 2004
    Publication date: June 16, 2005
    Inventors: Jae-Gyu Jeong, Sang-Hyun Kim, Soo-Min Kwak, Yong-Keun Kwak