Patent ID: 7061172
Filing Date: 2006-06-13
Classification: H01J

Abstract:
1. A cathode ray tube, comprising: a glass panel at a front side; a glass funnel at a rear side; a fluorescent screen formed on an inner side of the panel; a shadow mask disposed distant from the fluorescent screen by a designated space; and an electron gun emitting a beam disposed on a neck portion of the funnel opposing the fluorescent screen, wherein, an outer surface of the panel is substantially flat, and an inner surface of the panel has a curvature, and a transmittance ratio of an ending portion of an effective surface to a central portion of the panel is in the range of 0.4 to 0.6, and a radius of diagonal curvature (Rd) of the panel inner surface is in the range of 1.29R to 4.35R; and wherein, R=1.767×diagonal length of effective surface.