Abstract: The present invention provides an improvement in the appearance of a cathode-ray tube including a rectangular faceplate with an exterior surface having curvature along both the minor and major axes. The faceplate also includes a cathodoluminescent screen on an interior surface thereof. At least in the center portion of the faceplate, the curvature along the minor axis is at least 10 percent greater than the curvature along the major axis. Points on the exterior surface near the ends of the major axis, at the edges of the screen, lie in a first plane which is perpendicular to the central longitudinal axis of the tube; points on the exterior surface near the ends of the minor axis, at the edges of the screen, lie in a second plane which is spaced from and parallel to the first plane; and points on the exterior surface near the ends of the diagonals of the rectangular faceplate, at the edges of the screen, lie in a third plane which is spaced from and parallel to the first plane.

Abstract: A shadow mask type cathode-ray tube includes a rectangular faceplate having curvature along its minor axis but no curvature along its major axis. The shadow mask of the tube also has curvature along its minor axis and no curvature along its major axis. The mask is of a type of steel having a linear coefficient of thermal expansion of less than 3.times.10.sup.-6 .DELTA.l/l/.degree.C.

Abstract: The present invention provides an improved cathode-ray tube of a type having a cathodoluminescent line screen and slit apertured mask mounted within the tube in spaced relation to the screen, wherein the slits in the mask are aligned in substantially parallel columns, each column containing a plurality of slits which are vertically separated by web portions of the mask. In the tube, some of the end portions of the aperture columns are modified to produce a more asthetically pleasing screen border.