Color selection electrode assembly and cathode ray tube
OwnerKouji Shingaiinventor
Life of this patent
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Abstract
A color selection assembly includes a color selection electrode and a frame for supporting the color selection electrode. The frame applies a tension to the color selection electrode in the direction of V-axis. The color selection electrode includes a perforated area having a plurality of openings for the passage of electron beams and non-perforated areas formed on both sides of the perforated area in the direction of H-axis. The non-perforated area has a center portion and end portions disposed on both sides of the center portion in the direction of V-axis. The center portion has a width wider than the widths of the end portions.
Claims12
A color cathode ray tube comprising:
- a vacuum envelope including a faceplate having a phosphor screen inside thereof, and a substantially funnel-shaped portion connected to said faceplate;
- a rectangular color selection electrode provided in said faceplate in such a manner that said color selection electrode faces said phosphor screen, first and second directions substantially perpendicular to each other being defined on said color selection electrode;
- and
- a frame fixed to said faceplate, said frame supporting said color selection electrode in such a manner that said frame applies a tension to said color selection electrode in said second direction,
- wherein said color selection electrode includes a perforated area having a plurality of openings and a non-perforated area adjacent to said perforated area in said first direction, said non-perforated area is elongated in said second direction, said non-perforated area has a center portion and end portions formed on both sides of said center portion in said second direction, and a width of said center portion is wider than that of said end portions.
A color selection electrode assembly comprising:
- a rectangular color selection electrode on which first and second directions substantially perpendicular to each other are defined;
- and
- a frame supporting said color selection electrode in such a manner that said frame applies a tension to said color selection electrode in said second direction,
- wherein said color selection electrode includes a perforated area having a plurality of openings and a non-perforated area adjacent to said perforated area in said first direction, said non-perforated area is elongated in said second direction, said non-perforated area has a center portion and end portions formed on both sides of said center portion in said second direction, and a width of said center portion is wider than that of said end portions.
Dependencies are inferred from the claim text.