Shadow-mask color cathode ray tube

Details Shadow-mask color cathode ray tube Shadow-mask color cathode ray tube

1995-02-08

1997-04-01

Oberley, Alvin E.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

445 37, 445 47, 29882, H01J 2980

Patent

active

056169850

ABSTRACT:
A shadow-mask color cathode ray tube for producing a high-quality image by preventing the slot width or slot length of an electron-beam passing hole from increasing when a shadow mask is press-molded. The shadow mask in which the opening shape of an electron-beam passing hole formed in an effective area is of the slot type is press-molded and formed into an approximately rectangular approximately domed shape so that inequalities S3<S2 and S3<S2' are satisfied, where S3 is a width of a slot of an electron-beam passing hole located at an end of a vertical-directional outermost line at a horizontal-directional section in the effective area, S2 is a width of a slot of an electron-beam passing hole located adjacent to the electron-beam passing hole having the slot width S3 in a horizontal direction and at an end of a vertical-directional line adjacent to the vertical-directional outermost line, and S2' is a width of a slot of an electron-beam passing hole located adjacent to the electron beam passing hole having the slot width S2 in the vertical-directional line.

REFERENCES:
patent: 3652895 (1972-03-01), Tsuneta et al.
patent: 3686525 (1972-08-01), Naruse et al.
patent: 3983613 (1976-10-01), Palac et al.
patent: 4210843 (1980-07-01), Avadani
patent: 4429028 (1984-01-01), Kuzminski
patent: 4743795 (1988-05-01), Thoms
patent: 4746315 (1988-05-01), Sumiyoshi
patent: 4846747 (1989-07-01), Higashinakagawa et al.
patent: 5000711 (1991-03-01), Marks et al.
patent: 5243253 (1993-09-01), Marks et al.
patent: 5396145 (1995-03-01), Shiohara et al.

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