Dry-powdered, silica-coated prosphor particles for use in manufa

Details Dry-powdered, silica-coated prosphor particles for use in manufa Dry-powdered, silica-coated prosphor particles for use in manufa

1997-03-11

1999-02-23

Bell, Janyce

Coating processes

Direct application of electrical, magnetic, wave, or...

Pretreatment of substrate or post-treatment of coated substrate

427 64, 427 68, 427215, 427221, 4273977, 4274071, B05D 506

Patent

active

058741356

ABSTRACT:
Dry-powdered, silica-coated phosphor particles for use in manufacturing a CRT screen are dispersively coated with silica particles on the surface thereof to enhance the flow characteristics of the phosphor particles according to the present invention. A method of manufacturing the dry-powdered, silica-coated phosphor particles comprises the steps of sequentially first-dispersing silica particles in methanol, slowly adding dry-powdered phosphor particles to said silica-dispersed methanol, second-dispersing methanol in the silica-dispersed phosphor particles-adding methanol, filtering said resultant methanol of the second-dispersing step, drying the filtered resultant of the filtering step, and sieving the dried resultant of the drying step through a screen.

REFERENCES:
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patent: 4921727 (1990-05-01), Datta et al.
patent: 4921767 (1990-05-01), Datta et al.
patent: 4975619 (1990-12-01), Datta et al.
patent: 5167990 (1992-12-01), Tono et al.
patent: 5336834 (1994-08-01), Zarchy et al.

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