Cathode ray tube

摘要

A cathode ray tube includes a rectangular panel on which a phosphor screen is formed, a neck in which an electron gun assembly for emitting three electron beams is disposed, and a funnel formed contiguous to both the neck and the panel, and having a deflection yoke mounting portion on which a deflection yoke is mounted. The cross section of the deflection yoke mounting portion fulfills the following condition at the panel side end of the deflection yoke mounting portion. <MATH> where rh is a diameter of the funnel directed to a direction of a long axis of the panel, and rv is a diameter of the funnel directed to a direction of a short axis of the panel. <IMAGE>