Deflection yoke having short-circuited coil in convergence yoke portion
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United States of America Patent
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Aug 23, 2005
Grant Date -
Jan 29, 2004
app pub date -
Jul 17, 2003
filing date -
Jul 19, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides a deflection yoke device comprising a main yoke portion 4 for deflecting an electron beam emitted by an electron gun, and a convergence yoke portion 5 for adjusting the convergence of the electron beam. The convergence yoke portion 5 comprises an annular convergence core 53, a convergence horizontal coil 51 wound around both of left and right two regions of the core 53 which intersect a horizontal axis, and a convergence vertical coil 52 wound around both of upper and lower two regions of the core 53 which intersect a vertical axis. Short-circuited coils 54, 54 are provided around the respective left and right two regions of the core 53.
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