Patent ID: 6462466
Filing Date: 2002-10-08
Classification: H01J

Abstract:
A color cathode ray tube comprising:a vacuum envelope including a panel having an inner surface and a funnel connected to said panel and having a neck structure; a screen formed on said inner surface of said panel; and an electron gun assembly for generating three electron beams toward said screen, said electron gun assembly including cathodes for emitting said electron beams, heaters for heating said cathodes and a plurality of electrodes for accelerating and controlling said electron beams from said cathodes, said neck structure including, a neck extending from said funnel, having an end portion and an outer diameter which is not larger than 23.2 mm, a stem structure having a stem for sealing said end portion of said neck and a center axis, said stem welded to said end portion of said neck, an exhaust tube provided integrally on said center axis of said stem structure and led out of said end portion of said neck, a plurality of conductive wires, electrically insulated from one another and penetrating said stem structure in an air-tight fashion, for applying voltages to said heaters, said cathodes and said plurality of electrodes of said electron gun assembly, each of said conductive wires including an inner lead pin segment, an outer lead pin segment and an interconnecting wire, the inner lead pin segments being arranged on a first circumference around said center axis of said stem structure and extended inside said neck, the outer lead pin segments being arranged on a second circumference around said center axis of said stem structure and extended outside said end portion of said neck and the interconnecting wires each connecting the inner lead pin segment to the corresponding outer lead pin segment, said first circumference having a first diameter within a range of 12.8 mm to 14.7 mm and said second circumference having a second diameter within a range of 15.0 to 15.5 mm, and projections, provided integrally on said stem structure, for respectively supporting said inner lead pin segments protruding from said stem structure, said interconnecting wires, formed of a flexible Dumet wire between 2.5 mm and 4 mm in length, being embedded and bent in the respective projections and said stem structure, an amount of bending of the Dumet wire being 1.1 mm or less.