Color picture tube

摘要

A color picture tube for which a light-weight support frame for holding a shadow mask can be used and whose weight can be reduced and a color picture tube that can be provided without requiring the use of a press mold and a press machine for producing a shadow mask. The applied to the shadow mask is 5-90% of the tension (full tension) in which an actual arrival position of electron beams is not shifted from a predetermined arrival position on the phosphor screen surface due to the thermal expansion of the shadow mask caused by absorbing thermal energy that is converted from the energy of electron beams when electron beams strike the shadow mask. <IMAGE>