Patents by Inventor Weon-woo Choi

Weon-woo Choi 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).

  • Grinder, grinding method using the grinder, manufacturing method of display device using the grinding method, and display device manufactured by the manufacturing method
    Patent number: 8721389
    Abstract: A grinder including a grinding unit including a grinding surface and a shaft connected to the grinding unit for rotating the grinding unit. The grinding unit includes polyurethane and a mixture of a repairer and an abrasive, and an angle ? between a plane perpendicular to a rotational axis of the shaft and the grinding surface satisfies 1°???7°.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: May 13, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Sub Jung, Weon-Woo Choi, Dong-Wok Seo, Kwan-Su Kim
  • GRINDER, GRINDING METHOD USING THE GRINDER, MANUFACTURING METHOD OF DISPLAY DEVICE USING THE GRINDING METHOD, AND DISPLAY DEVICE MANUFACTURED BY THE MANUFACTURING METHOD
    Publication number: 20110223839
    Abstract: A grinder including a grinding unit including a grinding surface and a shaft connected to the grinding unit for rotating the grinding unit. The grinding unit includes polyurethane and a mixture of a repairer and an abrasive, and an angle ? between a plane perpendicular to a rotational axis of the shaft and the grinding surface satisfies 1°???7°.
    Type: Application
    Filed: January 25, 2011
    Publication date: September 15, 2011
    Inventors: Jong-Sub Jung, Weon-Woo Choi, Dong-Wok Soe, Kwan-Su Kim
  • System and method for cutting liquid crystal display substrate
    Publication number: 20070044606
    Abstract: A cutting system and method for a liquid crystal display (LCD) substrate in which a first cutting unit cuts the LCD substrate in one direction into a plurality of sub-substrates each including at least one panel, a carrier unit separates the sub-substrates from each other and simultaneously carries the separated sub-substrates to a second cutting unit that cuts the separated sub-substrates into individual LCDs.
    Type: Application
    Filed: August 24, 2006
    Publication date: March 1, 2007
    Inventors: Ho-min Kang, Weon-woo Choi, Seung-lyong Bok
  • Alignment layer printing device
    Patent number: 6386102
    Abstract: The present invention discloses an alignment layer printing device in which already used waste liquid is recovered for printing the alignment layer and can be reused in alignment layer printing. An alignment layer printing device consists of a raw material supplying device in which the alignment layer raw materials are supplied, a printing device in which the above raw materials that are supplied from the above raw material supplying device are printed on some object material, a recovery device in which the alignment layer raw materials that are not actually used in the printing are rerouted to the above raw material supplying device.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: May 14, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Weon-Woo Choi, Keun-Yong Lee, Gi-Pyeong Kim, Kun-Jong Lee, Jin-Ho Ju, Soo-Im Jeong, Bong-Woo Lee
  • Apparatus for fabricating an orientation layer on LCD panels
    Patent number: 6323925
    Abstract: An APR plate includes a polyimide(PI) pattern portion having a first hardness and corresponds to an effective screen area of an LCD panel and a PI pattern edge portion having a second hardness that is greater than the first hardness and corresponds to a non-effective screen area of the LCD panel. Associated methods of forming the dual-hardness resin plate and methods and apparatus of fabricating an orientation layer on a LCD panel include APR resin plates configured to yield uniform PI layers and inhibit PI lump generation even after the APR plate is repeatedly used in printing.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: November 27, 2001
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Weon-woo Choi
  • Methods for forming an orientation layer on LCD panels
    Patent number: 6249331
    Abstract: An APR plate includes a polyimide (PI) pattern portion having a first hardness and corresponds to an effective screen area of an LCD panel and a PI pattern edge portion having a second hardness that is greater than the first hardness and corresponds to a non-effective screen area of the LCD panel. Associated methods of forming the dual-hardness resin plate and methods and apparatus of fabricating an orientation layer on a LCD panel include APR resin plates configured to yield uniform PI layers and inhibit PI lump generation even after the APR plate is repeatedly used in printing.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: June 19, 2001
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Weon-woo Choi
  • Photosensitive resin plate with polyimide pattern edge portion having greater hardness than polyimide pattern portion
    Patent number: 6169592
    Abstract: An APR plate includes a polyimide(PI) pattern portion having a first hardness and corresponds to an effective screen area of an LCD panel and a PI pattern edge portion having a second hardness that is greater than the first hardness and corresponds to a non-effective screen area of the LCD panel. Associated methods of forming the dual-hardness resin plate and methods and apparatus of fabricating an orientation layer on a LCD panel include APR resin plates configured to yield uniform PI layers and inhibit PI lump generation even after the APR plate is repeatedly used in printing.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: January 2, 2001
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Weon-woo Choi