发明名称 |
BEAM INDEX TYPE CATHODE RAY TUBE |
摘要 |
PURPOSE: A beam index type cathode ray tube is provided to prevent distortion of an electron beam by correcting efficiently the electron beam. CONSTITUTION: A fluorescent layer screen(2) having an index stripe is formed on an inner face of a panel(4). An electron gun(12) is formed on an inner circumference of a neck portion(8) in order to emit an electron beam to the fluorescent layer screen(2). The electron gun(12) is formed with a cathode and a multitude of grid electrode. An optical detector(18) is formed on an outer face of a funnel(6) for connecting the panel(4) with the neck portion(8) in order to detect an index beam from the index stripe. An index circuit portion(20) applies correctly a color signal to the electron gun(12) by synchronizing an index signal of the optical detector(18) with the color signal. A deflection yoke(14) deflects the electron beam by generating a deflective magnetic field. An auxiliary deflection portion(22) forms a magnetic field parallel to the electron beam by winding coils on the grid electrode.
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申请公布号 |
KR20020007017(A) |
申请公布日期 |
2002.01.26 |
申请号 |
KR20000040678 |
申请日期 |
2000.07.14 |
申请人 |
SAMSUNG SDI CO., LTD. |
发明人 |
CHO, SANG HWAN;KIM, JONG HEON;LEE, SEUNG HYEON;PYUN, DO HUN;YOON, BOK CHEON |
分类号 |
H01J29/34;(IPC1-7):H01J29/34 |
主分类号 |
H01J29/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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