Patents by Inventor Bong-woo Lee

Bong-woo Lee 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).

  • Publication number: 20040092617
    Abstract: In a method and apparatus of aligning liquid crystal, a first ion beam is formed. The first ion beam is transformed into a second ion beam having transformed cross-section. The second ion beam advances toward a thin film including carbon-carbon double bond. The second ion beam forms a first angle with respect to the thin film. The second ion beam is transformed into an atomic beam. The atomic beam is irradiated onto the thin film to break the carbon-carbon double bond. The carbon-carbon double bond is broken to form a polarized functional group for aligning a liquid crystal molecule.
    Type: Application
    Filed: October 14, 2003
    Publication date: May 13, 2004
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Dae-Ho Choo, Hwan-Kyeong Jeong, Bong-Woo Lee
  • Patent number: 6720727
    Abstract: A cathode ray tube for reducing a deflection power without any BSN problem is disclosed. The cathode ray tube has a panel, a funnel having a deflection yoke on an outer periphery thereof, and a neck connected to the cone of the funnel. A phosphor screen is arranged on an inner surface of the panel. The funnel includes a body connected to the panel, and a cone connected to the body. The cone has a deflection power reducing shape which is formed to have a range of length 0.25×L from an end of the cone at the neck where L is an entire length of the cone measured along an axis of symmetry of the cathode ray tube.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: April 13, 2004
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Bong-Woo Lee, Do-Nyun Kim
  • Patent number: 6713952
    Abstract: A cathode ray tube includes a panel on which a phosphor screen is formed, a cylindrical neck in which an electron gun assembly is arranged, and a funnel formed between the panel and the neck. The funnel has a substantially rectangular cone portion on which a deflection yoke is mounted. An anode button is provided on the funnel to supply a high voltage in the funnel, and an inner graphite layer is disposed on an inner surface of the funnel to form a path for the transmission of the high voltage. The inner graphite layer satisfies at least one of the following conditions on an inner surface of the cone portion: 0.9≦Td/Th≦1.36 0.9≦Td/Tv≦1.36 where Td is a thickness of the inner graphite layer disposed on inside corners of the cone portion, Th is a thickness of the inner graphite layer disposed on inside horizontal walls of the cone portion, and Tv is a thickness of the inner graphtie layer disposed on inside vertical walls of the cone portion.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: March 30, 2004
    Assignee: Samsung Display Devices Co., Ltd.
    Inventor: Bong-Woo Lee
  • Patent number: 6685522
    Abstract: Disclosed is a product quality test in a winding step of the entire manufacturing process of a deflection yoke, which is a core part of a display device employing a cathode ray tube such as a color TV or a monitor, and in particular, a winding zig for measuring magnetic fields of a deflection yoke and a magnetic field measuring system of a deflection yoke using the winding zig.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: February 3, 2004
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: In Jung Yun, Ho Jin Cho, Bong Woo Lee, Byung Hoon Kang, Kwang Yun Choi
  • Publication number: 20030231278
    Abstract: In a method of filling a liquid crystal display panel with liquid crystal and a liquid crystal filling system using the method, a seal line and spacers are formed on a color filter substrate. A first volume defined by the seal line and a second volumes defined by the spacers are obtained. An amount of liquid crystal to be supplied into a region enclosed by the seal line is precisely calculated based on the first and second volumes. Shortage of the liquid crystal supplied into the LCD panel and overflow of the liquid crystal can be avoided. Accordingly, the steps for supplying the liquid crystal into the LCD panel may be reduced, and simultaneously peripheral regions of the LCD panel be prevented from being contaminated by the liquid crystal while the liquid crystal is filled into the LCD panel.
    Type: Application
    Filed: May 28, 2003
    Publication date: December 18, 2003
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hyo-Hak Nam, Bong-Woo Lee
  • Patent number: 6653773
    Abstract: A cathode ray tube with a central axis includes a panel with an inner phosphor screen and a rear portion. A funnel is connected to the rear portion of the panel. The funnel sequentially has a body with a large-sized end and a small-sized end, and a cone portion with a large-sized end and a small-sized end. The large-sized end of the body is sealed to the rear portion of the panel. The small-sized end of the body meets the large-sized end of the cone portion at a point. The meeting point of the body and the cone portion becomes an inflection point of the funnel. The cone portion has a sectional shape varying from a circle to a non-circle like a rectangle while proceeding from the small sized end to the large sized end such that the cone portion is provided with a curvature radius Rh in the horizontal axis direction, a curvature radius Rv in the vertical axis direction, and a curvature radius Rd in the diagonal axis direction.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: November 25, 2003
    Assignee: Samsung Display Devices Co., Ltd.
    Inventor: Bong-Woo Lee
  • Patent number: 6538369
    Abstract: A cathode ray tube with a central axis includes a panel with an inner phosphor screen, and a funnel connected to the panel. The funnel has a cone portion with a neck sealing side, and a body portion extended from he cone portion to the panel. A deflection yoke is externally mounted around the funnel. A neck is connected to the neck sealing side of the cone portion. An electron gun is mounted within the neck. The funnel is structured to satisfy the following condition: 0.52+0.001×(&agr;/2+&phgr;)<b/a<0.74+0.001×(&agr;/2+&phgr;) where a indicates the distance (mm) between the reference line R/L and the too of round TOR on the tube axis line, b indicates the disance (mm) between the reference line and the neck sealing side of the cone portion on the tube axis Z line, &agr; indicates the deflection angle (degree), and &phgr; indicates the diameter (mm) of the neck.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: March 25, 2003
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Bong-Woo Lee, Do-Nyun Kim
  • Patent number: 6528936
    Abstract: A cathode ray tube with a central tube axis Z includes a panel with an inner phosphor screen and a rear portion. The panel has a substantially rectangular effective screen portion with two long sides in a horizontal axis direction, two short sides in a vertical axis direction and four edges in a diagonal axis direction. A funnel is connected to the rear portion of the panel. The funnel sequentially has a body with a large-sized end and a small-sized end, and a cone portion with a large-sized end and a small-sized end. The cone portion has a thickness Th in the horizontal axis direction, a thickness Tv in the vertical axis direction and a thickness Td in the diagonal axis direction. The horizontal thickness Th, the vertical thickness Tv and the diagonal thickness Td of the cone portion of the funnel in the tube axis Z direction satisfy the following condition: Th(z)=Tv(z)>Td(z).
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: March 4, 2003
    Assignee: Samsung Display Devices Co., Ltd
    Inventors: Bong-Woo Lee, Chan-Yong Kim
  • Patent number: 6495954
    Abstract: A cathode ray tube with a central axis includes a panel with an inner phosphor screen, and a funnel connected to the panel. The funnel has a cone portion with a neck sealing side, and a body portion extended from the cone portion to the panel. A deflection yoke is externally mounted around the funnel. A neck is connected to the neck sealing side of the cone portion. An electron gun is mounted within the neck. The funnel is structured to satisfy the following condition: −0.145<H/L−(0.0225×&agr;)<0.08 where H indicates the distance between opposite points at the top of round on a line drawn to be normal to the tube axis line, L indicates the distance between the top of round and the neck sealing side of the cone portion on the tube axis line, and &agr; indicates the deflection angle (degree).
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: December 17, 2002
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Bong-Woo Lee, Do-Nyun Kim
  • Publication number: 20020164915
    Abstract: Disclosed is a product quality test in a winding step of the entire manufacturing process of a deflection yoke, which is a core part of a display device employing a cathode ray tube such as a color TV or a monitor, and in particular, a winding zig for measuring magnetic fields of a deflection yoke and a magnetic field measuring system of a deflection yoke using the winding zig.
    Type: Application
    Filed: June 8, 2001
    Publication date: November 7, 2002
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: In Jung Yun, Ho Jin Cho, Bong Woo Lee, Byung Hoon Kang, Kwang Yun Choi
  • Patent number: 6420440
    Abstract: The present invention relates to a method for recycling an alignment layer material. The recycled alignment layer material shows the same characteristics as an original alignment layer material. The waste solution of the alignment layer material produced during the liquid crystal display manufacturing processes is recycled by solidifying polyamic acids and soluble polyimides by putting a waste solution of the alignment layer material into an organic solution or ultra purified water in which the alignment layer material constituents of polyamic acids and soluble polyimides are insoluble, separating polyamic acids and soluble polyimides from the organic solvent or ultra purified water, and dissolving the separated solid polyamic acids and soluble polyimides into a solvent. Recycling the alignment layer material in this method can significantly reduce the manufacturing costs.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: July 16, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Bong-Woo Lee, Soo-Won Lee, Sho-Hak Nam, Jin-Ho Ju, Soo-Im Jeong, Hong-Sick Park, Sung-Chul Kang
  • Patent number: 6396204
    Abstract: A cathode ray tube includes a panel with an inner phosphor screen and a rear portion. A funnel is connected to the rear portion of the panel. The funnel is sequentially provided with a body having a large-sized end and a small-sized end, and a cone portion having a large-sized end and a small-sized end. The large-sized end of the body is sealed to the rear portion of the panel. The small-sized end of body meets the large-sized end of the cone portion at a point. A neck is sealed to the small-sized end of the cone portion. The funnel is structured to satisfy the following condition: 1.16≦(D/2)/tan((&psgr;/2))/(FG−TN)≦1.35 where D indicates the size of an effective area of the phosphor screen, FG indicates the distance between the large-sized end of the body and a final accelerating electrode of an electron gun fitted in the neck, TN indicates the distance between the small-sized end of the cone portion and the inflection point of the funnel, and &psgr; indicates an electron beam deflection angle.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: May 28, 2002
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Won-Sueg Park, Bong-Woo Lee
  • 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
  • Patent number: 6359379
    Abstract: Disclosed is a cathode ray tube comprised of a funnel with flute sections wherein the Beam Shadow Neck phenomenon can be prevented while at the same time ensuring adequate structural strength to prevent collapse due to an internal vacuum. These optimum flute sections are accomplished with the help of a computer simulation performance wherethrough electron beam orbits and funnel stress are interpreted.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: March 19, 2002
    Assignee: Samsug Display Devices Co., Ltd.
    Inventors: Bong-woo Lee, Do-nyun Kim
  • Patent number: 6335588
    Abstract: A cathode ray tube includes a rectangular panel having a phosphor screen formed thereon, a neck having an electron gun assembly disposed therein for emitting three electron beams and a funnel. The funnel has a body portion and a cone portion wherein a contour of the cross-section of the cone portion is a non-circular shape and the perpendicular distance from the tube axis to the contour occurs in the substantially diagonal direction with an angle &thgr;′ with respect to the horizontal axis according to the following inequality &thgr;−(4.3+(S/3.8))<&thgr;′<&thgr;+(4.3+(S/3.8)), where &thgr; is the angle in degrees between the diagonal of the face panel and the horizontal axis; S is the distance in mm between the centers of the electron passing holes of the electron gun assembly.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: January 1, 2002
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Do-nyun Kim, Bong-woo Lee
  • Patent number: 6208068
    Abstract: A cathode ray tube includes a rectangular panel on which a phosphor screen is formed, a neck in which an electron gun assembly for emitting three electron beams is disposed, and a funnel formed contiguous to both the neck and the panel, and having a deflection yoke mounting portion on which a deflection yoke is mounted. The cross section of the deflection yoke mounting portion fulfills the following condition at the panel side end of the deflection yoke mounting portion. 1.0≦rh/rv≦1.3 where rh is a diameter of the funnel directed to a direction of a long axis of the panel, and rv is a diameter of the funnel directed to a direction of a short axis of the panel.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: March 27, 2001
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Bong-woo Lee, Sang-hyuk Yoon