Patent ID: 7221081

Claim:
A cathode ray tube comprising: a panel on inner surface of which a phosphor screen is formed; a funnel joined to the panel; an electron gun generating electron beams; and a deflection yoke which is mounted within the funnel to deflect the electron beams, wherein a radius of curvature of an outer surface of said panel is in the range of 5000 mm to 100000 mm, and said panel satisfies: 1.0 mm≦(OAH*CFT)/USD≦1.5 mm where OAH is an overall height of said panel measured along a deflection axis X, USD is a diagonal length of an effective screen of said panel, CFT is a thickness of a center portion of said panel, and said panel satisfies: ratio of Td and Tx (Td/Tx) is no less than 1.3; where Tx is a thickness of said panel at an end of a longer axis and Td is a thickness of said panel at a corner of said panel.