Patent ID: 6455999
Filing Date: 2002-09-24
Classification: H01J

Abstract:
A color cathode ray tube comprising:a vacuum envelope including a substantially cylindrical neck, a funnel having an extended portion extending from the neck, and a panel coupled to the funnel; an electron gun assembly located in the neck and having cathodes, heaters for heating the cathodes and a plurality of electrodes for focusing electron beams emitted from the cathodes; a stem including a plurality of stem pins connected to the cathodes, the heaters and predetermined ones of the electrodes, and a flare section welded to an end of the neck, the stem pins being airtightly inserted circumferentially through predetermined portions of an outer surface of the flare section of the stem such that the predetermined portions form a reference circle; and a base adhered to the flare section of the stem and having stem-pin inserting holes through which the stem pins are inserted, wherein the neck has an outer diameter of from 22 mm to 23 mm, the reference circle formed by the stem pins on the outer surface of the flare section is set at a pin circle with a nominal diameter of 15.24 mm, and the base has a diameter not more than a maximum diameter of 23 mm.