Patent ID: 6225735
Filing Date: 2001-05-01
Classification: H01J

Abstract:
A color cathode-ray tube comprising:a face panel including a substantially rectangular effective portion having a long axis and a short axis which are perpendicular to each other;a phosphor screen formed on an inner surface of the face panel;a shadow mask arranged so as to face the phosphor screen; andan electron gun for emitting an electron beam toward the phosphor screen through the shadow mask;the shadow mask including a substantially rectangular mask body which is formed with a number of apertures for passing the electron beam and which has a long axis and a short axis individually corresponding to the long axis and the short axis of the face panel, and a rectangular mask frame which supports a peripheral edge portion of the mask body,the mask body being curved in the short axis direction and being fixed to the mask frame in a state that an internal stress in a direction of making small a radius of curvature in the short axis direction is applied mainly in that region of the mask body which is in the vicinity of the long axis.