Electric lamp and discharge devices – Cathode ray tube – Ray generating or control
Patent
1997-04-08
1999-02-09
Font, Frank G.
Electric lamp and discharge devices
Cathode ray tube
Ray generating or control
313412, 3153821, 31536815, H01J 2951
Patent
active
058699252
ABSTRACT:
A Focusing electrode in an electron gun for a color cathode ray tube provides a higher degree of freedom in electron gun design and reduces errors during assembly of the electron gun. A first focusing electrode that receives a constant voltage has vertically elongated electron beam pass-through holes formed in it. A second focusing electrode that receives a dynamic voltage has electron beam pass-through holes that include a pair of burring parts formed on their upper and lower edges. The burring parts are disposed in each of the vertically elongated electron beam pass-through holes in the first focusing electrode without changing a horizontal diameter of the electron beam pass-through holes in the first focusing electrode.
REFERENCES:
patent: 4599534 (1986-07-01), Shirai et al.
patent: 4886999 (1989-12-01), Yamane et al.
patent: 5719475 (1998-02-01), Shishido
"14:3: New Approach to Design Dynamic Quadrupole Inline Gun for CRT", B.K. Song, H.T. Kim S.K., Euro Display (Oct.) '96, pp. 500-503 + Euro Display Itinerary Proceedings of the 16th Intern'tl Display Research Conference.
An Sung Gi
Cho Sung Ho
Kim Hyun Cheol
Kim Won Hyun
Yoon Hi Won
Day Michael
Font Frank G.
LG Electronics Inc.
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