Method for preparing spherical phosphor particles

Details Method for preparing spherical phosphor particles Method for preparing spherical phosphor particles

1998-01-12

1999-03-23

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By impinging or atomizing with gaseous jet or blast

264 13, 264 21, B29B 900, C09K 1100

Patent

active

058854924

ABSTRACT:
A method for preparing spherical phosphor particles is disclosed, wherein a precursor solution of phosphors is decomposed to solid particles by aerosol pyrolysis and rapid cooling and subsequently the solid particles are heat-treated at a temperature of 1000.degree. C. to 1600.degree. C. for a period of 1 hour to 9 hours.

REFERENCES:
patent: 4871489 (1989-10-01), Ketcham
patent: 5294368 (1994-03-01), Karam
patent: 5695809 (1997-12-01), Chadha
Albessard et al, "S26-3 Phosphor Layers Made of Spherical Particles", Asia Display '95, pp. 643-646.

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