Diode-addressed color display with lanthanoid phosphors

Details Diode-addressed color display with lanthanoid phosphors Diode-addressed color display with lanthanoid phosphors

1998-11-03

2000-12-26

Yamnitzky, Marie

Stock material or miscellaneous articles

Composite

Of inorganic material

428917, 313500, 313501, 313502, 313503, 313512, 257 89, 257 98, 257100, 257103, H01L 3300, H05B 3300

Patent

active

061656313

ABSTRACT:
A diode-addressed color display comprising an UV-diode and a phosphor of the general formula LnL.sub.3 X.sub.2, wherein Ln=Eu.sup.3+, Tb.sup.3+, Tm.sup.3+, Dys.sup.3+, Sm.sup.3+, L=4-R-4'-benzophenone carboxylic acid, wherein R=phenyl, benzyl, CH.sub.3, CF.sub.3, C.sub.2 H.sub.5, F, Cl, OCH.sub.3, CH.sub.3 CO; 4-R-4'-benzophenone acetylacetonate, wherein R=phenyl, benzyl, CH.sub.3, CF.sub.3, C.sub.2 H.sub.5, F, Cl, OCH.sub.3, CH.sub.3 CO; 4-acetophenone carboxylic acid, 4-trifluoroacetophenone carboxylic acid, 4-acetophenone acetylacetonate or 4-trifluoroacetophenone acetylacetonate and X=1/2 phenanthroline, 1/2 diphenyl phenanthroline, 1/2 4-Cl-phenanthroline, 1/2 bipyridine, 1/2ethylenediamine, triphenyl phosphineoxide, trimethyl phosphineoxide, triethyl phosphineoxide, 1/2 diethylene glycol-dimethylether (diglyme) or ethanol.

REFERENCES:
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Junji Kido et al., "Bright red light-emitting . . . having a europium complex as an emitter", Appl. Phys. Lett. 65(17), pp. 2124-2126, Oct. 24, 1994.
Takeshi Sano et al., "Novel Europium Complex . . . with Sharp Red Emission", Jpn. J. Appl. Phys. vol. 34, Pt. 1, No. 4A, pp. 1883-1887, Apr. 1995.
"Full-Color Fluorescent Display Devices Using a Near-UV Light-Emitting Diode" by Yuchi Sato, Nobuyuki Takahashi and Susumu Sato, Jpn. J. Appl. Phys. vol. 35, pp. L838-839, (Jul., 1996).

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