Color picture tube

Details Color picture tube Color picture tube

1975-03-11

1976-10-26

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

313403, 313408, 313470, 354 1, H04N 920, G03B 4100, H01J 2980, H01J 2910

Patent

active

039887774

ABSTRACT:
A color picture tube, wherein a set of three electron beams emitted from respective three electron-emitting members of an in-line type electron gun, or from respective three electron guns, is projected through slot-shaped apertures of a shadow mask onto a screen, and sets of each three luminous strips are formed separated from each other and surrounded by light absorbing black film, and the three electron beams selectively energize the luminous strips to emit luminous color images, the length and width of the slots on the shadow mask and those of the phosphor strips having specified correlations in the central part of the picture screen and the shadow mask, and different correlations in the corner parts of the screen and the shadow mask so that color picture reproduction in contrast, brightness and color balance is satisfactory over the entire screen.

REFERENCES:
patent: 2957940 (1960-10-01), Cusano
patent: 3840881 (1974-10-01), Koizumi et al.
patent: 3844005 (1974-10-01), Yamada et al.
patent: 3882347 (1975-05-01), Suzuki et al.
patent: 3889145 (1975-06-01), Suzuki et al.
patent: 3890527 (1975-06-01), Patel et al.
patent: 3892995 (1975-07-01), Yamazaki
patent: 3900854 (1975-08-01), Osakabe et al.

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