COLOR PICTURE TUBE HAVING A LOW EXPANSION TENSION MASK ATTACHED TO A HIGHER EXPANSION FRAME

摘要

A color picture tube (10) has a tensioned mask (24) supported by a support frame (28) mounted within the tube. The mask has a significantly lower coefficient of thermal expansion than the frame. Intermediate member (48, 80) are located between the mask and the frame. The intermediate members are of a material having a coefficient of thermal expansion similar to that of the mask. The frame has elongated tabs (46, 70, 76) extending therefrom. Each of the tabs is attached at one end thereof to the remaining portion of the frame. The distal ends of the tabs are welded to the intermediate members.