Patents by Inventor Duk-Sik Ha

Duk-Sik Ha 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: 9145327
    Abstract: A method for forming a lubricant layer on the surface of a glass and a method for manufacturing a glass using the same prevents scratches from occurring at the surface of a glass and decreases corrosion of glass manufacturing equipment. The method for manufacturing a glass includes forming a glass, supplying SO2 gas and a SO2 gas oxidation catalyst to the glass under an oxidation environment to form a lubricant layer at the lower surface of the glass, and annealing the glass.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: September 29, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Han-Kook Kim, Jung-Sik Bang, Duk-Sik Ha, Kyoung-Hoon Min, Du-Sun Hwang
  • Patent number: 8871663
    Abstract: The present invention provides the composition of an alkali-free glass composition containing no alkali metal oxide and the preparation thereof. The alkali-free glass comprising substantially no alkali metal oxide according to the present invention comprises 68 to 75 wt % of SiO2; 1 to 3 wt % of B2O3; 4 to 13 wt % of Al2O3; 1 to 6 wt % of MgO; 1 to 11 wt % of CaO; 4 to 9 wt % of SrO; and 3 to 7 wt % of BaO, based on the total weight of oxides present therein.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: October 28, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dong-Kwon Lee, Duk-Sik Ha, Han-Kook Kim, Won-Bae Lim, Du-Sun Hwang, Sang-Kook Kim
  • Publication number: 20140171286
    Abstract: The present invention provides the composition of an alkali-free glass composition containing no alkali metal oxide and the preparation thereof. The alkali-free glass comprising substantially no alkali metal oxide according to the present invention comprises 68 to 75 wt % of SiO2; 1 to 3 wt % of B2O3; 4 to 13 wt % of Al2O3; 1 to 6 wt % of MgO; 1 to 11 wt % of CaO; 4 to 9 wt % of SrO; and 3 to 7 wt % of BaO, based on the total weight of oxides present therein.
    Type: Application
    Filed: February 20, 2014
    Publication date: June 19, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Dong-Kwon LEE, Duk-Sik HA, Han-Kook KIM, Won-Bae LIM, Du-Sun HWANG, Sang-Kook KIM
  • Publication number: 20130260153
    Abstract: A method for forming a lubricant layer on the surface of a glass and a method for manufacturing a glass using the same prevents scratches from occurring at the surface of a glass and decreases corrosion of glass manufacturing equipment. The method for manufacturing a glass includes forming a glass, supplying SO2 gas and a SO2 gas oxidation catalyst to the glass under an oxidation environment to form a lubricant layer at the lower surface of the glass, and annealing the glass.
    Type: Application
    Filed: May 21, 2013
    Publication date: October 3, 2013
    Applicant: LG CHEM, LTD.
    Inventors: Han-Kook KIM, Jung-Sik BANG, Duk-Sik HA, Kyoung-Hoon MIN, Du-Sun HWANG
  • Publication number: 20130247621
    Abstract: An apparatus for forming a lubricant layer on the surface of a glass prevents scratches from occurring at the surface of a glass and decrease corrosion of glass manufacturing equipment and may be included in an annealing furnace or a glass manufacturing apparatus. The apparatus includes a SO2 supply unit for supplying SO2 gas, a O2 supply unit for supplying O2 gas, and a catalyst retaining unit for retaining a SO2 gas oxidation catalyst, the catalyst retaining unit receiving SO2 gas and O2 gas from the SO2 supply unit and the O2 supply unit to generate SO3 gas and supplying the generated SO3 gas to a glass.
    Type: Application
    Filed: May 22, 2013
    Publication date: September 26, 2013
    Applicant: LG CHEM, LTD.
    Inventors: Han-Kook Kim, Kyoung-Hoon Min, Jung-Sik Bang, Duk-Sik Ha, Du-Sun Hwang
  • Patent number: 8541093
    Abstract: A method for high resolution ink-jet print using a pre-patterned substrate employs an ink-jet printing device including an ink-jet head for discharging conductive ink droplets and a driving stage for supporting a substrate to which the conductive ink droplets are hit, to draw a fine line width pattern on the substrate. The method includes (A) forming a stripe pattern with repeated stripes on a substrate surface on which a fine line width pattern will be formed, thereby preparing a pre-patterned substrate; (B) loading the substrate to the ink-jet printing device; and (C) injecting conductive ink droplets to a substrate region where the stripe pattern is formed. An equivalent interval (d) of the stripe pattern and a fine line width (D) of the drawn fine line width pattern satisfy a relation of d<<D, and the hit ink droplets are flowed in an anisotropic form within the region.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: September 24, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Tae-Su Kim, Jae-Jin Kim, Bu-Gon Shin, Duk-Sik Ha, Jung-Ho Park
  • Publication number: 20120183741
    Abstract: A method for high resolution ink-jet print using a pre-patterned substrate employs an ink-jet printing device including an ink-jet head for discharging conductive ink droplets and a driving stage for supporting a substrate to which the conductive ink droplets are hit, to draw a fine line width pattern on the substrate. The method includes (A) forming a stripe pattern with repeated stripes on a substrate surface on which a fine line width pattern will be formed, thereby preparing a pre-patterned substrate; (B) loading the substrate to the ink-jet printing device; and (C) injecting conductive ink droplets to a substrate region where the stripe pattern is formed. An equivalent interval (d) of the stripe pattern and a fine line width (D) of the drawn fine line width pattern satisfy a relation of d<<D, and the hit ink droplets are flowed in an anisotropic form within the region.
    Type: Application
    Filed: January 19, 2012
    Publication date: July 19, 2012
    Inventors: Tae-Su KIM, Jae-Jin Kim, Bu-Gon Shin, Duk-Sik Ha, Jung-Ho Park
  • Patent number: 8113648
    Abstract: A method for high resolution ink-jet print using a pre-patterned substrate employs an ink-jet printing device including an ink-jet head for discharging conductive ink droplets and a driving stage for supporting a substrate to which the conductive ink droplets are hit, to draw a fine line width pattern on the substrate. The method includes (A) forming a stripe pattern with repeated stripes on a substrate surface on which a fine line width pattern will be formed, thereby preparing a pre-patterned substrate; (B) loading the substrate to the ink-jet printing device; and (C) injecting conductive ink droplets to a substrate region where the stripe pattern is formed. An equivalent interval (d) of the stripe pattern and a fine line width (D) of the drawn fine line width pattern satisfy a relation of d<<D, and the hit ink droplets are flowed in an anisotropic form within the region.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: February 14, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Tae-Su Kim, Jae-Jin Kim, Bu-Gon Shin, Duk-Sik Ha, Jung-Ho Park
  • Patent number: 7762641
    Abstract: An ink injection method includes the steps of: storing vibration region information of a stage to which a head for injecting ink is mounted; changing coordinates of the stage by deducting the coordinates as much as the vibration region in a direction opposite to a pattern printing direction on the basis of coordinates at which pattern printing starts; moving the stage in the pattern printing direction after the stage is moved to the changed coordinates; deducting the changed coordinates from current coordinates of the stage to calculate a moving distance of the moving stage; and controlling the head to inject ink in correspondence to the pattern in case the moving distance of the stage is corresponding to the vibration region. This method prevents erroneous pattern printing due to initial vibration caused by movement of the stage when ink is injected for printing the pattern.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: July 27, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Hyun-Sik Kim, Duk-Sik Ha
  • Publication number: 20100055396
    Abstract: A method for high resolution ink-jet print using a pre-patterned substrate employs an ink-jet printing device including an ink-jet head for discharging conductive ink droplets and a driving stage for supporting a substrate to which the conductive ink droplets are hit, to draw a fine line width pattern on the substrate. The method includes (A) forming a stripe pattern with repeated stripes on a substrate surface on which a fine line width pattern will be formed, thereby preparing a pre-patterned substrate; (B) loading the substrate to the ink-jet printing device; and (C) injecting conductive ink droplets to a substrate region where the stripe pattern is formed. An equivalent interval (d) of the stripe pattern and a fine line width (D) of the drawn fine line width pattern satisfy a relation of d<<D, and the hit ink droplets are flowed in an anisotropic form within the region.
    Type: Application
    Filed: December 5, 2007
    Publication date: March 4, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Tae-Su Kim, Jae-Jin Kim, Bu-Gon Shin, Duk-Sik Ha, Jung-Ho Park
  • Publication number: 20090284698
    Abstract: The present invention relates to an ink composition, and more particularly, to an ink composition that comprises a) a binder polymer; b) a polymerizable compound that has an ethylenical unsaturation bond; c) a thermal initiator or photo-initiator; d) I) a solvent that has a boiling point of 180° C. or more, II) a solvent that has a hydroxyl group, and III) a solvent that has a boiling point of less than 180° C.; and e) a pigment, a color filter that is manufactured by using the same, and a display device that includes the same. When the ink composition according to the present invention is used in an inkjet method, it is possible to improve a contrast ratio according to excellent dispersion of fine pigment and improve an initial jetting property by using reduction of volatility.
    Type: Application
    Filed: May 14, 2009
    Publication date: November 19, 2009
    Inventors: Mi-Kyoung Kim, Dae-Hyun Kim, Hyun-Sik Kim, Duk-Sik Ha, Dong-Chang Choi, Han-Soo Kim, Min-A Yu
  • Publication number: 20070139466
    Abstract: An ink injection method includes the steps of: storing vibration region information of a stage to which a head for injecting ink is mounted; changing coordinates of the stage by deducting the coordinates as much as the vibration region in a direction opposite to a pattern printing direction on the basis of coordinates at which pattern printing starts; moving the stage in the pattern printing direction after the stage is moved to the changed coordinates; deducting the changed coordinates from current coordinates of the stage to calculate a moving distance of the moving stage; and controlling the head to inject ink in correspondence to the pattern in case the moving distance of the stage is corresponding to the vibration region. This method prevents erroneous pattern printing due to initial vibration caused by movement of the stage when ink is injected for printing the pattern.
    Type: Application
    Filed: December 19, 2006
    Publication date: June 21, 2007
    Inventors: Hyun-Sik Kim, Duk-Sik Ha