Patent ID: 6433467
Filing Date: 2002-08-13
Classification: H01J

Abstract:
A shadow mask for a cathode ray tube having a faceplate panel with an inner phosphor screen, the shadow mask comprising:a front surface having a wave pattern in at least one direction, the front surface comprising a beam-guide portion having a plurality of apertures, and a non-opening portion surrounding the beam-guide portion, the front surface being substantially rectangular-shaped with opposite horizontal sides each having a horizontal length, opposite vertical sides each having a vertical length shorter than the horizontal length, and four corners one at each intersection of the horizontal and vertical sides, wherein the wave pattern of the front surface extends from one of the horizontal sides of the front surface toward the other horizontal side such that a cross section along a vertical direction comprises a sinusoidal shape; and a side wall bent from the front surface, the side wall being adapted for mounting to the faceplate panel via a mask frame.