Patent ID: 6833680
Filing Date: 2004-12-21
Classification: H01J

Abstract:
A structure of an electron gun for a color cathode ray tube comprising a fluorescent screen, a shadow mask and the electron gun,wherein the fluorescent screen includes a fluorescent film with three-color pixels arranged thereon; the shadow mask is a color selecting electrode positioned adjacent to the fluorescent screen; the electron gun includes a cathode for emitting three electron beam, a first electrode and a second electrode; and the means for forming the main lens includes a plurality of electrodes for focusing the three electron beams onto the fluorescent screen; and an electron beam passing hole (or through-hole) of the first electrode ranges from 0.06 mm2 to 0.12 mm2, and a gap between the first electrode and the second electrode ranges from 0.12 mm to 0.3 mm.