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Electrophoretic Deposition Of Phosphors For Display Technology

Published online by Cambridge University Press:  15 February 2011

Michael J. Shane
Affiliation:
University of California, San Diego, Materials Science Program 0310, 9500 Gilman Drive, La Jolla, CA 92093-0310
Jan B. Talbot
Affiliation:
University of California, San Diego, Materials Science Program 0310, 9500 Gilman Drive, La Jolla, CA 92093-0310
Esther Sluzky
Affiliation:
Hughes Aircraft Co., 6155 El Camino Real, Carlsbad, CA 92008
K. R. Hesse
Affiliation:
Consultant, 1221 La Paloma Glen, Escondido, CA 92026
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Abstract

Electrophoretic deposition is a process used in producing display screens, in particular highresolution CRT screens. The deposition of phosphor particles from isopropanol suspensions is investigated. It is shown that two materials deposit during electrophoretic deposition on a cathode: the phosphor particles, and hydroxides formed by chemical and electrochemical reactions occurring at the cathode. A simple model to predict the deposition rates of these two materials, given the particle and ion concentrations and mobilities, is developed. Finally, the microstructure of the resulting deposited screen is investigated using scanning and transmission electron microscopy.

Type
Research Article
Copyright
Copyright © Materials Research Society 1994

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