Sol gel method for forming thin luminescent films

Details Sol gel method for forming thin luminescent films Sol gel method for forming thin luminescent films

1987-10-01

1990-10-23

Bell, Janyce

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

4271263, 427226, B05D 506

Patent

active

049650912

ABSTRACT:
A sol-gel procedure is described for making display devices with luminescent films. The procedure typically involves hydrolysis and polymerization of an organometallic compound together with selected luminescent ions, and coating of a substrate and then heat treatment to form a polycrystalline layer. The procedure is particularly useful for making cathode ray tubes, expecially those for high power operation because of the excellent luminescence characteristics obtained, good thermal contact from the luminescent layer to faceplate and low cost of the procedure. Also described are the devices obtained which exhibit a layer of complex oxide with network structure much like the corresponding bulk compound.

REFERENCES:
patent: 3816328 (1974-06-01), Levene
patent: 3927224 (1975-12-01), Levene
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J. Non-Crystalline Solids, vol. 63, "Formation of Sheets and Coating Films from Alkoxide Solutions" by S. Sakka, K. Kamiya, K. Makita and Y. Yamamoto, pp. 223-235 (1984).
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