| 摘要 |
PURPOSE:To prevent the electrification of a getterring by scattered electron beams or the like and prevent the occurrence of the image distortion by electrically insulating the getterring from a high-resistance inner conductive film with a heat-resistant insulating connector. CONSTITUTION:A guide groove 14a is coupled and fixed to a cross bar 8a stored in the recess 8c at the center of a getter ring 8 and welded and fixed at the center of the getterring 8, then the window hole 15b of a holder 15 is fitted to a connector contact point 14b, next the holder 15 made of nonmagnetic alloy is welded and fixed to the ring 8 to assemble an insulating connector 14. Accordingly, even if the high-frequency current is applied to a heating device coil 13 to heat the ring 8, the thermal conductivity of the connector 14 is low, thus no thermal shock is applied to a high resistance inner conductive film 10, and the resistance value of the contact point 14b is not increased. In addition, the ring 8 is invariably connected to an anode 4 electrically with a getter spring 7, and the electrification by scattered electron beams or the like does not occur.
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