Pigment coated phosphor and high contrast color television catho

Details Pigment coated phosphor and high contrast color television catho Pigment coated phosphor and high contrast color television catho

1979-06-19

1981-12-22

Silverberg, Sam

Electric lamp and discharge devices

Cathode ray tube

Screen

25230145, 427 64, 427 68, H01J 2910

Patent

active

043073204

ABSTRACT:
Pigment coated phosphors comprising a europium activated yttrium oxysulfide phosphor having a europium activator value within a range of 0.04 gram atom to 0.066 gram atom per 1 mol of yttrium oxysulfide having adhered thereto red colored pigment particles such as cadmium sulfoselenide pigment particles, rouge pigment particles or red lead pigment particles, in respective amounts of 0.1 to 2.0 wt %, 0.05 to 2.0 wt % or 0.1 to 12 wt %, based upon the europium activated yttrium oxysulfide phosphor; and a cathode ray tube for high contrast color television using as a red emitting phosphor at least one of the three pigment coated phosphors.

REFERENCES:
patent: 3875449 (1975-04-01), Byler
patent: 3886394 (1975-05-01), Lipp
patent: 4021588 (1977-05-01), Royce
patent: 4049845 (1977-09-01), Lozler
patent: 4152483 (1979-05-01), Kanda

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