| 摘要 |
PURPOSE: A cathode ray tube is provided in which inner atmospheric pressure strength and ITC revolution margin are sufficiently secured and deflection power is effectively reduced to increase deflection sensitivity. CONSTITUTION: A cathode ray tube includes a panel having a fluorescent screen at the inner surface thereof, a funnel connected with the panel, a neck connected to the end of the portion having the smaller diameter of the funnel, at which an electron gun is placed, opposite to the fluorescent screen, and a deflection yoke accommodating area(50) between the end of the neck and the panel. When the cross section of the deflection yoke accommodating area, which is perpendicular to the axis(Z) of the cathode ray tube, has a rectangular shape, the ratio of the inner curvature radius of the shorter side near the deflection basis point on the axis of the cathode ray tube to the distance to the opposite angle is in the range of 0.110 to 0.180.
|
