Luminescent device for displays and lighting

Details Luminescent device for displays and lighting Luminescent device for displays and lighting

1995-01-13

1999-02-02

Bonner, Melissa

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

501 12, C09K 1108

Patent

active

058660399

ABSTRACT:
A luminescent composition which is a uniform admixture of a least one phosphor having a particle size of about ten 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: 2965784 (1960-12-01), Hoffman
patent: 3040202 (1962-06-01), Lehmann
patent: 5308804 (1994-05-01), Lee
patent: 5313485 (1994-05-01), Hamil et al.
Budd, K.D., et al "Optical Properties and Densification of Sol-Gel Derived bTiO3 Layers", SPIE vol. 1328 Sol-Gel Optics 1990. No Month.
Chen, J., et al "Rapid Thermal Annealing of Sol-Gel Derived Lead Zirconate Titanate Thin Films", J. Appl. Phys. 71(9) May 1992.
Nosaka et al, "Sol-Gel Processing for BaTiO3 and Application to an A.C. Powder Electroluminescence Device", J. Mat'l. Sci. Lett., 10(7), pp. 406-407, 1990 no month.

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