Patent ID: 6232710
Filing Date: 2001-05-15
Classification: H01J

Abstract:
A color cathode ray tube, comprising a panel portion including a shadow mask structure, a neck portion housing an electron gun and a funnel portion connecting said panel portion and neck portion, said shadow mask structure including a shadow mask having a plurality of electron beam passing holes, a substantially rectangular support frame for holding said shadow mask, and at least three mask springs which are fixed to an outside wall side of said substantially rectangular support frame, said mask springs having a holding hole for a respective panel pin, a portion of said holding hole of said mask spring being shifted in a lateral direction from a portion wherein said mask spring is fixed to the outside wall of said rectangular support frame, and said mask springs in an entirety thereof have a value of coefficient of thermal expansion which is from 1.2 to 2.0 times as great as the coefficient of thermal expansion of said support frame.