Luminescent device having phosphor particles about .5 micrometer

Details Luminescent device having phosphor particles about .5 micrometer Luminescent device having phosphor particles about .5 micrometer

1998-02-10

1999-12-21

O'Shea, Sandra

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313466, 313502, 313509, 313586, 313587, 427212, H01J 162

Patent

active

060053429

ABSTRACT:
A luminescent composition which is a uniform admixture of a least one phosphor having a particle size of about "one-half" micrometers or less and at least one sol gel compound in an amount sufficient to substantially encapsulate the phosphor. Luminous devices are formed by disposing this composition on a substantially transparent substrate. The use of particulate phosphors in an encapsulating medium protects the phosphor and provides dielectric strength or conduction as required. Improved luminous devices for displays and lighting are provided such as those finding use as flat panel displays and for backlights for liquid crystal flat panel displays.

REFERENCES:
patent: 2824992 (1958-02-01), Bouchard et al.
patent: 3040202 (1962-06-01), Lehmann
patent: 3421037 (1969-01-01), Dymon
patent: 3603830 (1971-09-01), Gallaro
patent: 5182489 (1993-01-01), Sano
Budd, K.D., et al "Optical Properties and Densification of Sol-Gel Derived bTiO3 Layers", SPIE vol.1328 Sol-Gel Optics 1990.
Chen, J., et al "Rapid Thermal Annealing of Sol-Gel Derived Lead Zirconate Titanate Thin Films", J. Appl. Phys. 71(9) May 1992.

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