Color cathode-ray tube apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Sep 27, 2007
app pub date -
Feb 7, 2007
filing date -
Mar 24, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A deflection device includes a first magnetic field generator, which generates a magnetic field of the same polarity as that of a vertical deflection magnetic field during upward deflection, on an upper side from an XZ-plane, a second magnetic field generator, which generates a magnetic field of the same polarity as that of a vertical deflection magnetic field during downward deflection, on a lower side from the XZ-plane, a third magnetic field generator, which generates a magnetic field of a polarity opposite to that of the vertical deflection magnetic field during upward deflection, on the upper side from the XZ-plane, and a fourth magnetic field generator, which generates a magnetic field of a polarity opposite to that of the vertical deflection magnetic field during downward deflection, on the lower side from the XZ-plane. The first and second magnetic field generators are placed away from a core on an opposite side of a tube axis with respect to an outermost peripheral edge of the core on a phosphor screen side. The third and fourth magnetic field generators are placed between the core and the separator on the phosphor screen side from a center position of the core in a tube-axis direction. Because of this, a variation in raster distortion characteristics due to a change in temperature can be reduced simply at low cost.
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