ELECTRON GUN FOR COLOR CATHODE RAY TUBE

摘要

PURPOSE: An electron gun is provided to achieve improved focus performance by preventing an alignment defect, while preventing a degradation of screen by minimizing the amount of dynamic spot shift. CONSTITUTION: An electron gun comprises a plurality of in-line type electron beam radiation units; a triode unit including a control electrode and an accelerating electrode for controlling and accelerating electron beams; and a main lens including a focus electrode for focusing electron beams on a screen, and an anode. The focus electrode includes a first type focus electrode(17a) where a dynamic voltage is applied, and a second type focus electrode(17b) where a static voltage is applied. The electron gun includes a track-shaped protrusion(20) formed between the first type focus electrode and the second type focus electrode.