Patent ID: 6710532
Filing Date: 2004-03-23
Classification: H01J

Abstract:
An electron gun in a color CRT comprising:three cathodes for emitting electron beams; a plurality of electrodes for acceleration; and, a focus electrode and an anode each including; an opposite rim having a single electron beam pass-through hole with a vertical width V and a horizontal width H, and an electrostatic field control body at a depth D from the rim, with a bridge width â€˜tâ€™, and a vertical width v and a horizontal width h of a central electron beam pass through-hole, wherein the electrostatic field control body and the focus electrode and the anode have the following relation (VxvxD)/29&gE;Hâˆ’(2Ã—S), where, S denotes a sum of the horizontal width h and the bridge width t of the electrostatic field control body.