The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 26, 2000
Filed:
Nov. 03, 1998
U.S. Philips Corporation, New York, NY (US);
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.