Color selecting mechanism for a CRT having specified aperture sl

Details Color selecting mechanism for a CRT having specified aperture sl Color selecting mechanism for a CRT having specified aperture sl

1998-04-14

2000-04-25

Patel, Vip

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313403, 313407, 313269, H01J 2980, H01J 118, H01J 1912

Patent

active

060548037

ABSTRACT:
It is possible to improve a vibration-proof band shaped grid element in a color selecting mechanism. In a color selecting mechanism 1 for a color cathode ray tube, in which a color selecting electrode thin plate (10) having a number of band shaped grid elements (8) and a slit shaped electron beam penetrating aperture (9) formed between respective neighboring grid elements (8), is seam-welded on a frame (6), the ratio of a length a of the above mentioned slit shaped electron beam aperture (9) to a distance (b) from an end portion of the above mentioned electron beam penetrating aperture (9) to a seam-welded orbit (17) or b/a.times.100 is set equal to or less than 2.5 percent.

REFERENCES:
patent: 4857027 (1989-08-01), Makita et al.
patent: 5369330 (1994-11-01), Aibara
patent: 5382871 (1995-01-01), Funahashi et al.
patent: 5391957 (1995-02-01), Fendley
patent: 5394051 (1995-02-01), Lerner
patent: 5406168 (1995-04-01), Takagi
patent: 5525859 (1996-06-01), Ito et al.

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