Process for forming phosphor screen of monochrome cathode ray tu

Details Process for forming phosphor screen of monochrome cathode ray tu Process for forming phosphor screen of monochrome cathode ray tu

1997-09-10

1999-09-14

Bell, Janyce

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

427273, 427336, 427287, 427165, 313416, B05D 506

Patent

active

059520388

ABSTRACT:
This invention provides a process for forming a phosphor screen of a monochrome cathode ray tube (projection tube) which has an improved luminance remaining property. The phosphor particles are settled on an inner surface of a glass bulb with a binder of SiO.sub.2 to form a phosphor layer, in which the amount of SiO.sub.2 is reduced by rinsing with a water-based liquid like deionized water and a PVA solution before forming an organic layer on the phosphor layer. The phosphor screen has an improved luminance remaining property that is close to that of a direct viewing color cathode ray tube, without lowering the screen quality.

REFERENCES:
patent: 2662829 (1953-12-01), Krause
patent: 4513024 (1985-04-01), Morita et al.
patent: 4758449 (1988-07-01), Kimura et al.

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