Thiogallate phosphor and white light emitting device...

Details Thiogallate phosphor and white light emitting device... Thiogallate phosphor and white light emitting device...

2011-08-16

2011-08-16

Koslow, C. Melissa (Department: 1734)

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

C252S30160S, C313S503000, C257S098000

Reexamination Certificate

active

07998365

ABSTRACT:
The present invention relates to a thiogallate phosphor which is excited by ultraviolet or blue light to emit light with a relatively longer wavelength than that of the ultraviolet or blue light. The phosphor is expressed as a general formula of (A1-x-yEuxMIIIy)(B2-yMIIy)S4, wherein 0.005<x<0.9, 0<y<0.995 and x+y<1. Here, A is at least one element selected from the group consisting of Ba, Sr and Ca, B is at least one element selected from the group consisting of Al, Ga and In, MIIIis at least one rare earth element selected from the group consisting of Sc, La, Gd and Lu, and MIIis at least one element consisting of Mg, Zn and Be. Accordingly, the luminous efficiency can be increased relative to the thiogallate phosphor with a general formula of AB2S4:Eu.

REFERENCES:
patent: 3639254 (1972-02-01), Peters
patent: 6417019 (2002-07-01), Mueller et al.
patent: 6617782 (2003-09-01), Cheong et al.
patent: 6695982 (2004-02-01), Ellens et al.
patent: 2003/0224221 (2003-12-01), Cheong et al.
patent: 2004/0124758 (2004-07-01), Danielson et al.
patent: 10028266 (2001-12-01), None
patent: 10-2006-0028844 (2006-04-01), None
patent: 03-107441 (2003-12-01), None
patent: 2005-026285 (2005-03-01), None
T. E. Peters, et al. “Luminescence and Structural Properties of Thiogallate Phosphors Ce+3 and Eu+2 -Activated Phosphors. Park I”, Journal of Electrochemical Society, vol. 119, No. 2, Feb. 1, 1972, pp. 230-236, XP002034014.
European Search Report dated Feb. 18, 2009 for EP Application No. 06716326.1.

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