Thomson Licensing S.a.

Thomson Consumer Electronics Inc.

Anthony Socrates Poulos

Istvan Gorog

Harry R Swank

Joseph Arthur Reed

Kelly Eugene Hamm

Frank Rowland Ragland, Jr

A color picture tube includes an evacuated envelope having a rectangular faceplate panel with two approximately parallel long sides, two approximately parallel short sides and four corners. The panel comprises a faceplate and a peripheral sidewall, and includes a shadow mask-frame assembly mounted therein by springs located at the four corners of the panel. The springs have apertures engaging studs that are located on the peripheral sidewall at the four corners. The panel includes additional studs on the peripheral sidewall located near the centers of at least one pair of approximately parallel sides of the panel. Brackets are located on opposite sides of the shadow mask-frame assembly at the locations of the additional studs. The brackets include slots therein. The slots are open on sides thereof facing the faceplate. The additional studs are positioned within the slots.

Color picture tube having improved shadow mask-frame assembly support

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.

Color picture tube having a tension mask attached to a frame

A color CRT assembly comprises a tube having an external magnetic deflection yoke thereon. The tube includes an evacuated envelope with a substantially rectangular faceplate panel and a tubular neck connected by a funnel having a rectangular open end sealed to the faceplate panel. A three color phosphor screen is carried on an inner surface of the faceplate panel and a color selection electrode is mounted in spaced relation therefrom. An electronic gun is disposed within the neck of the tube for generating and directing at least one electron beam to the screen. The magnetic deflection yoke is located on the tube, in the region of the funnel-to-neck junction of the envelope, for subjecting the beam to magnetic fields which cause the beam to scan a rectangular raster over the screen. The assembly is improved by the inclusion, in the funnel, of a quantity of glass which attenuates x-radiation from the tube. The quantity of glass is disposed adjacent to the yoke, on the faceplate side thereof. The quantity of glass may take the form either of an annular ring or a ring interrupted by gaps formed along the major and minor axes of the tube.

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Leola, PA, United States of America

Anthony Socrates Poulos