Three gun color CRT which has three grids with the holes in the

Details Three gun color CRT which has three grids with the holes in the Three gun color CRT which has three grids with the holes in the

1993-04-28

1995-03-21

Brinich, Stephen

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313415, H01J 2951

Patent

active

053999320

ABSTRACT:
An electron beam for a color CRT is equipped with three cathodes such that three electron beams may be emitted therefrom. Three grids are provided with beam passing holes for each of the three electron beams and are positioned in the path of the electron beams. The beam passing openings of the third grid are shifted from alignment with the beam passing openings of the first and second grid by a degree sufficient to focus the three beams appropriately relative to a central focal axis of the electron gun.

REFERENCES:
patent: 4870321 (1989-09-01), Kamohara
patent: 4885505 (1989-12-01), Koshigoe et al.
patent: 4922166 (1990-05-01), Ichida et al.
patent: 5039906 (1991-08-01), Park
patent: 5077497 (1991-12-01), Kamohara et al.

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