Process for preparing a phosphor layer of a cathode ray tube

Details Process for preparing a phosphor layer of a cathode ray tube Process for preparing a phosphor layer of a cathode ray tube

1997-07-24

1999-05-25

Mayekar, Kishor

Chemistry: electrical and wave energy

Processes and products

Electrophoresis or electro-osmosis processes and electrolyte...

204487, 204490, 204491, 204485, C25D 1312

Patent

active

059067209

ABSTRACT:
A process for preparing a phosphor layer of a cathode ray tube. To prepare a phosphor layer located on the display screen rear side of the cathode ray tube, the display screen rear side is first coated with an electrically conductive electrode layer consisting of electrically conductive polymers; a solution containing the phosphors or their precursors as well as a solution containing an electrolyte are deposited on the electrode layer; an electric field is applied between the electrode layer and the solution; and the phosphors are electrophoretically deposited on the electrode layer to form the phosphor layer. Since polymers with an evaporation temperature below the destruction temperature of the phosphors are selected, the electrode layer can subsequently be removed by evaporating the polymers.

REFERENCES:
patent: 3525679 (1970-08-01), Wilcox et al.
patent: 5399449 (1995-03-01), Tanimoto
patent: 5582703 (1996-12-01), Sluzky et al.
patent: 5717282 (1998-02-01), Oomen

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