Patent ID: 6710530
Filing Date: 2004-03-23
Classification: H01J

Abstract:
A cathode ray tube comprising:a panel having an inner phosphor screen; a funnel sealed to the panel while facing the phosphor screen, the funnel being externally mounted with a deflection yoke; a neck sealed to the rear of the funnel while mounting an electron gun to emit electron beams therein; a shadow mask placed within the panel, the shadow mask having a hole-formation portion with a plurality of beam-guide holes, a non-holed portion externally surrounding the hole-formation portion while being shaped with a rectangular frame, and a skirt bent from the outer periphery of the non-holed portion to the rear of the panel, the skirt having a basic etching portion half-etched at a predetermined roughness, the components of the shadow mask being integrated into one body; a welding portion formed at the bottom of the skirt with a plurality of welding points; and a mask frame internally suspension-fitted to the panel while being welded to the skirt to support the shadow mask; wherein the skirt of the shadow mask has a subsidiary etching portion placed between the welding portion and the basic etching portion while being half-etched at a roughness greater than the roughness of the basic etching portion.