| 摘要 |
A cathode ray tube glass panel having an effective picture plane diameter D of at least 500 mm in the diagonal axis direction of a glass panel and an average radius of curvature of at least 10000 mm at the outer surface of a face portion (11), wherein, when a tube-axis-direction distance h from a contact point between an effective picture plane end of a glass panel inner surface and a blend R portion (12) to a sealed end face (14) is set as a length of a skirt portion (13) and a glass wall thickness at the sealed end face (14) of the skirt portion is set to be t, these h and t are range-specified at a ratio with respect to the effective picture plane diameter D and a product of h and t is range-specified in relation to the effective picture plane diameter D, whereby deformation due to tilting of the skirt portion is suppressed, a mechanical strength reduced by a shorter skirt portion is compensated for by the glass wall thickness at the sealed end face and the glass panel is reduced in weight without compromising a specified mechanical strength.
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