Insulator system for a CRT focus mask

Abstract

The present invention relates to a color cathode-ray tube having an evacuated envelope with an electron gun therein for generating at least one electron beam. The envelope further includes a faceplate panel having a luminescent screen with phosphor lines on an interior surface thereof. A tensioned focus mask, having a plurality of spaced-apart first conductive lines, is located adjacent to an effective picture area of the screen. The spacing between the first conductive lines defines a plurality of slots substantially parallel to the phosphor lines on the screen. Each of the first conductive lines has a substantially continuous insulating material layer formed on a screen-facing side thereof. A plurality of second conductive lines are oriented substantially perpendicular to the plurality of first conductive lines and are bonded thereto by an insulator. The insulator is typically comprised of one or more electrically insulating material layers, a base coat and a top coat. The electrically insulating material layers comprising either of the base or top coat may be a composite material comprising at least one of a nitride-containing compound, a silicon-containing compound, a boron-containing compound and a metal oxide-containing compound. Optionally, a lead based glass insulator may be used with the composite insulating material.

Dependencies are inferred from the claim text.