The object of the present invention is to provide a color CRT panel that can display an image which is perceived as being flat, with uniform brightness. The color CRT panel comprises a panel portion 11 including a substantially flat outer surface facing a viewer and an inner surface concavely curved with a radius of curvature Rx in a direction of a horizontal axis of the cathode ray tube, and the following conditions are satisfied to display the images: Rx<=[(Wh/2)<2>+<DELTA>th<2>]/(2*<DELTA>th), where <DELTA>th=t*[1-COS<2><theta>2h/(n1-1/n1*SIN<2><theta>2h)], <theta>2h=ARCTAN[Wh/(2*L)], where Rx denotes a curvature radius of the horizontal axis direction inside the panel, Wh denotes a horizontal width of an effective area of picture in the face portion, L denotes an optimum viewing distance, n1 denotes a refractive index of the face portion, and t denotes a thickness of the face portion at a center thereof.
Color cathode ray tube panel