Mask structure for use in color CRT and Color CRT

Abstract

A mask structure for use in a color CRT includes a color-separating mask made of a thin metal plate having a row of slits formed therein with a predetermined pitch, and a mask frame holding the color-separating mask while applying tension perpendicular to a direction in which the slits are arranged to the color-separating mask. The color-separating mask has a first hole-bearing area including all of the slits of the row except two outermost slits of the row, and two second hole-bearing areas each of which includes one of the outermost slits. The thin metal plate has projections formed therein for each of the outermost slits, the projections protruding to an opening of corresponding one of the outermost slits. The opening area of the outermost slits of the second hole bearing areas is smaller than the opening area of the slits of the first hole bearing area.

Dependencies are inferred from the claim text.