Chemistry: electrical and wave energy – Processes and products – Electrophoresis or electro-osmosis processes and electrolyte...
Patent
1994-12-12
1996-12-10
Gorgos, Kathryn
Chemistry: electrical and wave energy
Processes and products
Electrophoresis or electro-osmosis processes and electrolyte...
204490, 204491, C25D 1302
Patent
active
055827039
ABSTRACT:
Phosphor color screens with triad pitches of 150 .mu.m and less are fabricated by a combination of modified microelectronic processing techniques and electrophoretic coating of the phosphors and black screen. Indeed, triad pitches based on 15 .mu.m color line width and 5 .mu.m black matrix between colors are achievable. The method of the invention for fabricating a three-color screen comprises (a) forming a conductive coating on a major surface of the substrate; (b) forming multiple masking layers on the conductive coating; (c) patterning the masking layers in a prescribed pattern to form a first plurality of openings therein to expose first portions of the conductive coating; (d) electrophoretically depositing a first phosphor on the exposed first portions of the conductive coating; and (e) repeating steps (b) through (d) three times (1) to deposit a second phosphor on second portions of the conductive coating, (2) to deposit a third phosphor on third portions of the conductive coating, and (3) to deposit a black layer around all three color portions, to thereby define a plurality of triads of said first, second, and third colors in spaced relationship, separated by the black layer.
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Hesse Kenneth R.
Kurinec Santosh K.
Sluzky Esther
Ternullo, Jr. Luigi
Brown Rodney F.
Gorgos Kathryn
Mayekar Kishor
Palomar Technologies Corporation
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