Color television display tube

Details Color television display tube Color television display tube

1978-08-18

1980-03-11

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313470, H01J 2907, H01J 2932, H01J 3120

Patent

active

041930150

ABSTRACT:
Color television display tube of the shadow mask type with phosphor lines. In connection with the unequal center distances between the central electron spot and the two outermost electron spots of a triplet as a result of the properties of the deflection coils, the width of the phosphor lines is chosen to be so that the electron spots in the case of mislanding simultaneously cross the edge of the phosphor lines. As a result of this the "white-remains-white" effect is obtained. The intermediate spaces between the phosphor lines of a triplet are preferably equal, which facilitates the inspection of the screens during the manufacture.

REFERENCES:
patent: 2947898 (1960-08-01), Heil
patent: 3866082 (1975-02-01), Barten
patent: 3979630 (1976-09-01), Van Ormer
patent: 3988777 (1976-10-01), Hosokoshi et al.
patent: 4070596 (1978-01-01), Tsuneta et al.
patent: 4100452 (1978-07-01), Kaplan

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