Title :
A novel quasi-Einzel type electron gun design for color projection CRT´s
Author :
Chen, H.Y. ; Gorski, R. ; Babicz, E.
Author_Institution :
Zenith Electron., Melrose Park, IL, USA
Abstract :
A quasi-Einzel type electron gun has been designed for color projection CRTs (cathode ray tubes). Due to the reduced magnification factor and space charge effect, plus a strong prefocusing BFR, this gun had a 35% improved low-current (100- mu A) spot and 25% improved high-current (5-mA) spot compared to the conventional Hi-UPF projection gun. This gun uses conventional oxide cathode and conventional electron gun manufacturing technology. This will reduce the production cost and minimize many of the long-term performance uncertainties of a newly developed gun. Although this gun was developed as a monochrome projection gun, the authors believe that through a minor reoptimization this design can be used for the color inline gun system.<>
Keywords :
cathode-ray tubes; colour television picture tubes; electron guns; electron optics; color inline gun system; color projection CRT; monochrome projection gun; oxide cathode; production cost; quasi-Einzel type electron gun; reduced magnification factor; reoptimization; space charge effect; Cathode ray tubes; Convergence; Costs; Electrons; Electrostatics; Lenses; Manufacturing; Optical design; Space charge; Voltage;
Conference_Titel :
Display Research Conference, 1991., Conference Record of the 1991 International
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-0213-3
DOI :
10.1109/DISPL.1991.167424
