Shadow mask for color CRT

摘要

Disclosed is for improving a shadow mask having a open type slot combining a plurality of slots of shadow mask in order to improve the brightness of a color CRT (Cathode Ray Tube). A plurality of slots are formed so that electron beams are passed through the slots in vertical direction, and a vertical pitch distance PvC between slots located around horizontal center line is longer than a vertical pitch distance PvE between slots located around horizontal edge. Therefore, a distortion and an inferiority which are may be generated in fabricating the shadow mask can be prevented, and the shadow mask is able to cope with vibration pressed on the shadow mask by improving strength of boundary part.