Patent ID: 6639347
Filing Date: 2003-10-28
Classification: H01J

Abstract:
A color cathode ray tube, comprising:a rectangular panel having a slightly convex almost flat outer face and a concavely curved inner face satisfying the following conditions: 0.98<1.02, 0.95<1.04, 0.98<1.02, 0.98<1.05, where Rd is the radius of diagonal curvature between opposite corners of the panel within a screen effective surface area, Rt is the radius of peripheral edge curvature along a long side of the panel, Rs is the radius of peripheral edge curvature along a short side of the panel, Rh is the radius of curvature along an x-axis passing through a center of the screen effective surface area and parallel to the long sides of the panel, and Rv is the radius of curvature along a y-axis passing through the center of the screen effective surface area and parallel to the short sides of the panel.