Patents by Inventor Woo-Seok Huh
Woo-Seok Huh 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).
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Patent number: 6768267Abstract: A cathode ray tube (CRT) has an electron gun including a cathode for emitting electron beams, a control electrode for controlling emission of the electron beams from the cathode, and a screen electrode for accelerating the flow of the electron beams passing the control electrode are arranged in series. In the CRT, during a scanning period, a voltage applied to at least one of the control electrode and the screen electrode changes in response to a voltage of a data signal applied to the cathode. The control electrode and screen electrode each include three mutually electrically insulated sections for independently controlling each of three electron beams passing through the electrodes.Type: GrantFiled: September 25, 2002Date of Patent: July 27, 2004Assignee: Samsung SDI Co., Ltd.Inventors: Woo-seok Huh, Min-cheol Bae
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Patent number: 6628061Abstract: An electron gun for a cathode ray tube includes a triode having cathodes, a first grid and a second grid, one or more third grids through which electron beams emitted from the cathode pass, a fourth grid opposing the third grids and forming a main focus lens with the third grid, a shield cup connected to the fourth grid and supplying a high voltage to the fourth grid, and a correction grid disposed between the fourth grid and the shield cup and having R, G, and B beam through holes arranged along a line. The R and B beam through holes have openings with asymmetrical shapes that are symmetrical with respect to each other and relative to the straight line, balancing astigmatisms and improving resolution.Type: GrantFiled: November 19, 2001Date of Patent: September 30, 2003Assignee: Samsung SDI Co., Ltd.Inventors: Young-gon Hong, Min-cheol Bae, Woo-seok Huh
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Publication number: 20030076043Abstract: A cathode ray tube (CRT) has an electron gun including a cathode for emitting electron beams, a control electrode for controlling emission of the electron beams from the cathode, and a screen electrode for accelerating the flow of the electron beams passing the control electrode are arranged in series. In the CRT, during a scanning period, a voltage applied to at least one of the control electrode and the screen electrode changes in response to a voltage of a data signal applied to the cathode. The control electrode and screen electrode each include three mutually electrically insulated sections for independently controlling each of three electron beams passing through the electrodes.Type: ApplicationFiled: September 25, 2002Publication date: April 24, 2003Applicant: Samsung SDI Co., Ltd.Inventors: Woo-seok Huh, Min-cheol Bae
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Patent number: 6525494Abstract: An electron gun for a color CRT includes a triode including cathodes for emitting electron beams, a control electrode, and a screen electrode, at least two focusing electrodes on the same axis of the triode portion for forming a quadrupole lens, and a final focusing electrode forming a large diameter lens with the focusing electrodes and through which three electron beams commonly pass. The electron gun includes a correction unit producing a correction force acting on the three electron beams and that is larger for two side electron beams than for a central electron beam of the three electron beams when a dynamic voltage, synchronized with a deflection signal, is applied to at least one of the focusing electrodes for forming the quadrupole lens.Type: GrantFiled: January 16, 2002Date of Patent: February 25, 2003Assignee: Samsung SDI Co., Ltd.Inventors: Min-cheol Bae, Young-gon Hong, Woo-seok Huh
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Patent number: 6498427Abstract: A dynamic focus electron gun for a color cathode ray tube including a cathode, a control electrode and a screen electrode, which constitute a triode, a first focusing electrode having three vertically elongated electron beam through-holes formed through its emitting surface, a second focusing electrode which constitutes a quadrupole lens together with the first focusing electrode and having three circular electron beam through-holes formed through its entering surface facing the emitting surface of the first focusing electrode, and a final accelerating electrode installed adjacent to the second focusing electrode and constituting a main electronic lens together with the second focusing electrode.Type: GrantFiled: June 17, 1999Date of Patent: December 24, 2002Assignee: Samsung SDI Co., Ltd.Inventors: Yong-Seok Song, Yong-Geol Kwon, Myeong-Hwan Lee, Kwang-Jin Yun, Woo-Seok Huh
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Publication number: 20020132526Abstract: A base cap for a cathode ray tube (CRT) preventing insulation breakdown between a lead pin to which a high voltage is applied and a lead pin to which a comparatively low voltage is applied. Insulation breakdown due to poor application of a silicone composition between a stem of the CRT and a flange of the base cap is avoided. The base cap includes a cylindrical housing, a flange extending radially outward from the edge of the cylindrical housing and including holes into which lead pins fixed to the stem of an electron gun of the CRT are inserted; and at least one isolation element on the surface of the flange, facing the stem, for preventing breakdown of insulation between the lead pins.Type: ApplicationFiled: December 28, 2001Publication date: September 19, 2002Applicant: Samsung SDI Co., Ltd.Inventors: Min-Cheol Bae, Jong-Hoon Choi, Woo-Seok Huh
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Publication number: 20020130623Abstract: An electron gun for a color CRT includes a triode including cathodes for emitting electron beams, a control electrode, and a screen electrode, at least two focusing electrodes on the same axis of the triode portion for forming a quadrupole lens, and a final focusing electrode forming a large diameter lens with the focusing electrodes and through which three electron beams commonly pass. The electron gun includes a correction unit producing a correction force acting on the three electron beams and that is larger for two side electron beams than for a central electron beam of the three electron beams when a dynamic voltage, synchronized with a deflection signal, is applied to at least one of the focusing electrodes for forming the quadrupole lens.Type: ApplicationFiled: January 16, 2002Publication date: September 19, 2002Applicant: Samsung SDI Co., Ltd.Inventors: Min-cheol Bae, Young-gon Hong, Woo-seok Huh
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Publication number: 20020067118Abstract: An electron gun for a cathode ray tube includes a triode having cathodes, a first grid and a second grid, one or more third grids through which electron beams emitted from the cathode pass, a fourth grid opposing the third grids and forming a main focus lens with the third grid, a shield cup connected to the fourth grid and supplying a high voltage to the fourth grid, and a correction grid disposed between the fourth grid and the shield cup and having R, G, and B beam through holes arranged along a line. The R and B beam through holes have openings with asymmetrical shapes that are symmetrical with respect to each other and relative to the straight line, balancing astigmatisms and improving resolution.Type: ApplicationFiled: November 19, 2001Publication date: June 6, 2002Applicant: Samsung SDI Co., Ltd.Inventors: Young-gon Hong, Min-cheol Bae, Woo-seok Huh