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An electrophoretic deposition process for screening phosphor powders for color displays
Author(s) -
Chang David C.,
Talbot Jan B.,
Rao Ravi P.,
Holland Chris
Publication year - 2000
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1828700
Subject(s) - phosphor , cathodoluminescence , chromaticity , electrophoretic deposition , materials science , coating , deposition (geology) , substrate (aquarium) , micrograph , electrophoresis , optoelectronics , optics , nanotechnology , luminescence , chemistry , scanning electron microscope , composite material , chromatography , physics , geology , paleontology , oceanography , sediment
— A new process incorporating electrophoretic deposition and a photolithographic technique was developed for coating repeating triads of 75‐μm‐wide stripes composed of green ZnSiO 4 :Mn (P1), red Y 2 O 3 :Eu (P56), and blue ZnS:Ag, Cl (P11) phosphor particles. The resolution of the screens produced is 100 triads of phosphor stripes per inch of substrate. SEM micrographs show a high degree of phosphor stripe edge precision with relatively little cross‐contamination. Cathodoluminescence measurements revealed that the chromaticity of the phosphors were not altered by the coating process.