Phosphor screen for post-focusing type color picture tube

Details Phosphor screen for post-focusing type color picture tube Phosphor screen for post-focusing type color picture tube

1974-02-12

1980-09-09

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Screen

H01J 2918, H01J 2928

Patent

active

042219906

ABSTRACT:
A phosphor screen for a post-focusing type color picture tube comprising a faceplate, a phosphor layer on the faceplate, a metal back layer on the phosphor layer and a secondary electron emission suppressing layer on the metal backed phosphor screen, in which the thickness of the metal back layer and the density of the secondary electron emission suppressing layer take particular values for effective suppression of emission of secondary electrons from the phosphor screen.

REFERENCES:
patent: 2878411 (1959-03-01), Alvarez
patent: 3475639 (1969-10-01), Driffort et al.
patent: 3692576 (1972-09-01), Takayanagi et al.
patent: 3767447 (1972-10-01), Mizuno et al.
patent: 3892995 (1975-07-01), Yamazaki
Terrill, "Absorption of Cathode Rays in Aluminum Foil," Physical Review, vol. 24, 1924, pp. 616-621, Scientific Library.

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