Method of forming color tube phosphor screen

Details Method of forming color tube phosphor screen Method of forming color tube phosphor screen

1989-01-19

1990-11-27

Bell, Janyce

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

427 71, 427 73, H01J 2922, B05D 136, B05D 722

Patent

active

049734954

ABSTRACT:
According to the present invention, there is provided a method for forming a color tube phosphor screen comprising the steps of forming a light-absorbing matrix having holes on a faceplate, coating a silica colloidal solution or an alumina colloidal solution containing a multivalent metal ion in said holes and washing said holes, and forming phosphor layers of three colors in said washed holes. The color tube phosphor screen formed through the method of the present invention has no phosphor residual, especially pigment residual.

REFERENCES:
patent: 3440080 (1969-04-01), Tamura et al.
patent: 3582389 (1971-06-01), Squinier
patent: 4086090 (1978-04-01), Kohaski et al.
patent: 4243735 (1981-01-01), Kobale
patent: 4293586 (1981-10-01), Unnai et al.
patent: 4717856 (1988-01-01), Kato

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