Color picture tube having a tension mask attached to a frame
AssigneeThomson Licensing
InventorsJoseph Arthur Reed, Anthony Socrates Poulos, Frank Rowland Ragland, Jr.
Life of this patent
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Abstract
The present invention provides an improvement in a color picture tube having a tension mask supported by a support frame mounted within the tube. The mask includes an active apertured portion formed by a plurality of parallel vertically extending strands, between which are elongated operational apertures through which electron beams pass during operation of the tube. Top and bottom border portions, outside the active apertured portion of the mask, have additional apertures therein that are aligned with the longitudinal centerlines of the strands.
Claims5
In a color picture tube having a tension mask attached to a support frame mounted within said tube, the improvement comprising said mask having
- an active apertured portion formed by a plurality of parallel vertically extending strands, between which are elongated operational apertures through which electron beams pass during operation of said tube, and
- top and bottom border portions, outside said active apertured portion, having elongated additional apertures therein that are aligned with the longitudinal centerlines of said strands.
Dependencies are inferred from the claim text.