Patent ID: 6072270
Filing Date: 2000-06-06
Classification: H01J

Abstract:
A shadow mask for use in a color cathode ray tube (CRT) having a plurality of electron beams and a display panel for presenting a video image, said shadow mask comprising:a generally planar metal sheet having a thickness in the range of 0.12-0.18 mm;means for defining a plurality of elongated, aligned, generally linear apertures in said metal sheet, wherein said apertures are arranged in parallel, spaced linear arrays aligned along a longitudinal axis of said apertures and wherein each of said apertures is adapted to pass a respective electron beam and has a length in the range of 0.90-10.00 mm; anda plurality of bridge portions of said metal sheet disposed intermediate adjacent apertures in said metal sheet, wherein each bridge portion has a length and a width and wherein a ratio of the width of a bridge portion to the length of an aperture is in the range of 0.001-0.110.