CRT with internal neck coating for suppressing arcing therein
AssigneeRCA Corporation
InventorKarl G. Hernqvist
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Abstract
CRT (cathode-ray tube) comprises an evacuated glass envelope, an electron-gun mount assembly housed in the envelope, the electrodes of said envelope being confined by closely-spaced glass surfaces, and an insulative coating on said glass surfaces opposite electrodes of said mount assembly. The insulative coating is a substantially-continuous, noncrystalline film of a nonionic organic polymeric material.
Claims5
In a cathode-ray tube comprising an evacuated glass envelope, an electron-gun mount assembly housed in said envelope, electrodes of said mount assembly being confined by closely-spaced internal glass surfaces, and an insulative coating on said internal glass surfaces opposite electrodes of said mount assembly, the improvement wherein said coating is a substantially-continuous, noncrystalline film of a nonionic organic polymeric material consisting essentially of a polyimide.
Dependencies are inferred from the claim text.