| 摘要 |
<p>A funnel structure for a cathode ray tube satisfies following equations 0.33 ‰¤ Rh maj / R maj ‰¤ 0.51, Rh maj = H maj / U maj , R maj = a maj / b maj , wherein a length of a major axis evaluation line as an imaginary line connecting the major axis outer end of a sealing surface, at which a panel meets a funnel, with the major axis outer end of a TOR (top of round), at which a body portion meets a yoke portion, is defined as b maj ; a length from a point on the major axis evaluation line, which has a maximum vertical line length to the outer surface of the funnel, to the major axis outer end of the sealing surface is defined as a maj ; a maximum length of the vertical line is defined as H maj ; and 1/2 of a major axis length of an effective surface of the panel is defined as U maj .</p> |
