Phosphor activated with europium, light emitting device...

Details Phosphor activated with europium, light emitting device... Phosphor activated with europium, light emitting device...

2008-08-19

2011-10-04

Williams, Joseph L (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C252S30140F

Reexamination Certificate

active

08030839

ABSTRACT:
Provided are a phosphor which is capable of emitting green light of high luminance and in which unfavorable effects on other members has been reduced so as to be applicable to white light having excellent light emitting characteristics, a light emitting device using the phosphor, and a method for manufacturing the phosphor. The phosphor containing silicon, magnesium, and chlorine, and activated with europium and capable of emitting green light, in which the molar ratio of chlorine to magnesium is in a range of 1.0≦Cl/Mg≦1.9. Introduction of chlorine at such a composition ratio improves the light emitting characteristics and the amount of chlorine dissolved.

REFERENCES:
patent: 2003/0006469 (2003-01-01), Ellens et al.
patent: 2003/0146690 (2003-08-01), Ellens et al.
patent: 2006/0027785 (2006-02-01), Wang et al.
patent: 2006/0028122 (2006-02-01), Wang et al.
patent: 2006/0279196 (2006-12-01), Hsu
patent: 2007/0200095 (2007-08-01), Murazaki
patent: 2003-535477 (2003-11-01), None
patent: 2003-535478 (2003-11-01), None
patent: 2004-161982 (2004-06-01), None
patent: 2004-179644 (2004-06-01), None
patent: 2004-296830 (2004-10-01), None
patent: 2007-231250 (2007-09-01), None
International Search Report received in International Application No. PCT/JP2008/064761 (2 pgs.), Dec. 2008, published.
Xiao Zhang et al., “Luminescence Properties and Energy Transfer of Eu2+Doped Ca8Mg(SiO4Cl2Phosphors”, Journal of the Electrochemical Society, vol. 139, No. 2, Feb. 1992, pp. 622-625.

Affiliated with

Also associated with

Rating

Phosphor activated with europium, light emitting device... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phosphor activated with europium, light emitting device..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phosphor activated with europium, light emitting device... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4271736