Encapsulated long life electroluminescent phosphor

Details Encapsulated long life electroluminescent phosphor Encapsulated long life electroluminescent phosphor

2005-02-01

2005-02-01

Cleveland, Michael (Department: 1762)

Coating processes

Particles, flakes, or granules coated or encapsulated

Inorganic base

C427S064000, C427S255310, C427S255340

Reexamination Certificate

active

06849297

ABSTRACT:
A process for making an electroluminescent phosphor having a given emission spectra A, comprises the steps of manufacturing a beginning electroluminescent phosphor having an emission spectra B, different than A. A coating is applied to the phosphor having the emission spectra B to increase the resistance of the phosphor to the deleterious effects of moisture and change the emission spectra of the phosphor to emission spectra A. The application of the coating includes the steps of reacting a coating precursor with a mixture of oxygen and ozone.

REFERENCES:
patent: 4585673 (1986-04-01), Sigai
patent: 4825124 (1989-04-01), Sigai
patent: 5080928 (1992-01-01), Klinedinst et al.
patent: 5196234 (1993-03-01), Taubner et al.
patent: 5602445 (1997-02-01), Solanki et al.
patent: 5605867 (1997-02-01), Sato et al.
patent: 5702643 (1997-12-01), Reddy et al.

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