Patents by Inventor Yu-cheol Han

Yu-cheol Han 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: 5565731
    Abstract: Disclosure is related to a cathode ray tube including a panel forming a fluorescent layer therein, and a funnel connected to a panel and including an electron gun and a deflection yoke mounted inside and near the neck portion thereof, respectively, which satisfies the following equation:.theta.RL=1 to 1.3where .theta. denotes a deflection angle in degrees of an electron beam emitted from the electron gun, and RL denotes the distance in millimeters between the outlet of the electron gun mounted in the neck portion and the reference line which is the boundary between the deflection region where the electron beam emitted from the electron gun is deflected by the deflection yoke and the linear region where the electron beam moves linearly. The cathode ray tube can prevent the electron beam emitted from the electron gun from colliding with the inner surface of the funnel and mislanding in the corner areas of the fluorescent layer.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: October 15, 1996
    Assignee: Samsung Electron Devices Co., Ltd.
    Inventor: Yu-cheol Han
  • Patent number: 5455482
    Abstract: Disclosure is related to a cathode ray tube including a panel formed with a fluorescent layer, and a funnel connected to the panel and provided with an electron gun and a deflection yoke installed inside and near the neck portion, respectively, which satisfies the following equation:(L1/L2).times.(D/S)=.alpha.where L1 denotes the distance from the outlet of the last accelerating electrode to the end of the deflection yoke, L2 denotes the distance between the outlet of the last accelerating electrode and the reference line which is the boundary between the deflection region and the linear region of the electron beams, D denotes the inner diameter of the neck portion and S denotes the eccentric distance between the centers of electron beam passing holes of electrodes. .alpha. is between 0.5 and 1.5. The cathode ray tube can prevent the electron beam from colliding with the cone portion near the neck and mislanding in the corner areas of the fluorescent layer.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: October 3, 1995
    Assignee: Samsung Electron Devices Co., Ltd.
    Inventor: Yu-cheol Han