Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...
Reexamination Certificate
2008-04-08
2009-11-10
Yamnitzky, Marie R. (Department: 1794)
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
With reflector, opaque mask, or optical element integral...
C257SE33061, C313S501000, C313S503000, C313S506000, C313S112000, C252S30140R, C252S30140F, C428S690000, C428S698000, C428S917000
Reexamination Certificate
active
07615797
ABSTRACT:
A light-emitting device of the present application includes a light-emitting element and a phosphor layer. Output light of the device is white light, which contains red, green, and blue light-emitting components emitted by red and green phosphors and a blue light-emitting element, respectively. The phosphor layer includes a phosphor such as a red phosphor, which is a nitridoaluminosilicate-based nitride phosphor, and a green phosphor. The red and green phosphors and the blue light-emitting element have emission peaks from 600 nm to less than 660 nm, from 500 to less than 560 nm, and from 440 nm to less than 500 nm, respectively. The phosphor in the phosphor layer has an excitation peak at a wavelength shorter than that of the emission peak of light emitted by the blue light-emitting element. The phosphor is activated with Eu2+or Ce3+.
REFERENCES:
patent: 5998925 (1999-12-01), Shimizu et al.
patent: 6717353 (2004-04-01), Mueller et al.
patent: 7023019 (2006-04-01), Maeda et al.
patent: 7250715 (2007-07-01), Mueller et al.
patent: 7391060 (2008-06-01), Oshio
patent: 2002/0105269 (2002-08-01), Ellens et al.
patent: 2003/0006469 (2003-01-01), Ellens et al.
patent: 2003/0030038 (2003-02-01), Mitomo et al.
patent: 2003/0030368 (2003-02-01), Ellens et al.
patent: 2003/0052595 (2003-03-01), Ellens et al.
patent: 2003/0094893 (2003-05-01), Ellens et al.
patent: 2003/0146690 (2003-08-01), Ellens et al.
patent: 2004/0090174 (2004-05-01), Tasch et al.
patent: 2004/0124758 (2004-07-01), Danielson et al.
patent: 2004/0135504 (2004-07-01), Tamaki et al.
patent: 2004/0245532 (2004-12-01), Maeda et al.
patent: 2005/0104503 (2005-05-01), Ellens et al.
patent: 2005/0189863 (2005-09-01), Nagatomi et al.
patent: 2006/0038477 (2006-02-01), Tamaki et al.
patent: 2006/0103291 (2006-05-01), Ellens et al.
patent: 2006/0124947 (2006-06-01), Mueller et al.
patent: 2007/0007494 (2007-01-01), Hirosaki et al.
patent: 2007/0259206 (2007-11-01), Oshio
patent: 2008/0089825 (2008-04-01), Tamaki et al.
patent: 1 630 220 (2006-03-01), None
patent: 1 696 016 (2006-08-01), None
patent: 10-172459 (1998-06-01), None
patent: 2002-322474 (2002-11-01), None
patent: 2003-110150 (2003-04-01), None
patent: 2003-124527 (2003-04-01), None
patent: 2003-515665 (2003-05-01), None
patent: 2003-203504 (2003-07-01), None
patent: 2003-206481 (2003-07-01), None
patent: 2003-277746 (2003-10-01), None
patent: 2003-321675 (2003-11-01), None
patent: 2004/505172 (2004-02-01), None
patent: 2005-235934 (2005-09-01), None
patent: 2005-255895 (2005-09-01), None
patent: 2006-8721 (2006-01-01), None
patent: 2006-16413 (2006-01-01), None
patent: 2006-19419 (2006-01-01), None
patent: 3940162 (2007-04-01), None
patent: 1998-046311 (1998-09-01), None
patent: 2003-7742 (2003-01-01), None
patent: 01/39574 (2001-06-01), None
patent: 01/40403 (2001-06-01), None
patent: 03/080763 (2003-10-01), None
patent: 2004/029177 (2004-04-01), None
patent: 2005/022030 (2005-03-01), None
patent: 2007/131195 (2007-11-01), None
Xie, et al., “Eu2+-doped Ca-α-SiAlON: A yellow phosphor for white light-emitting diodes”, Applied Physics Letters, vol. 84, No. 26, Jun. 28, 2004, pp. 5404-5406.
Xie, et al., “Photoluminescence of Cerium-Doped α-SiAlON Materials”, J. Am. Ceram Soc., vol. 87, No. 7, 2004, pp. 1368-1370.
Xie, et al., “Preparation of Ca-α-Sialon Ceramics with compositions along the Si3N4—½Ca3N2: 3AIN Line”, Zeitschrift Fur Metallkunde, vol. 92, No. 8, Aug. 2001, pp. 931-936.
Fang, et al., First-principles calculations of the stability and local structure of α-sialon ceramics on the line Si3N4-½Ca3N23AlN ; J. Phys.: Condens. Matter 16 (2004), 2931-2939.
Lee, et al., “Photoluminescence and Electroluminescence Characteristics of CaSiN2: Eu Phosphor”, Proceedings of SPIE-the International Society for Optical Engineering, vol. 3241, 1997, pp. 75-83.
Ohkubo, et al., “Absolute Fluorescent Quantum Efficiency of NBS Phosphor Standard Samples”, J. Illum. Engng. Inst. Jpn., vol. 83, No. 2, 1999, pp. 87-93.
Uheda, et al., “Temperature dependence of the red phosphor, CaSiN2:Eu2+”, Abstracts of 71stMeetings of the Japan Society of Electrochemistry, p. 75, 2004.
Uheda, et al., “The Crystal Structure and Photoluminescence Properties of a New Red Phosphor, Calcium Aluminum Silicon Nitride Doped with Divalent Europium”, Abs. 2073, 206thMeeting, 2004.
The 65thFall Meeting (2004) of the Japan Society of Applied Physics Conference Proceedings (Sep. 2004 at Tohoku Gakuin University).
NIMS Press Release No. 90 “Successful Development of Red Phosphor for White Light LEDs”, Aug. 31, 2004.
Sakuma, et al., “Warm-white light-emitting diode with yellowish orange SiAlON ceramic phosphor” Optics Letters, vol. 29, No. 17, pp. 2001-2003, Sep. 1, 2004.
Hirosaki, et al., “Characterization and properties of green-emitting β-SiAlON: Eu2+powder phosphors for white light-emitting diodes”, Applied Physics Letters, vol. 86, pp. 211905-1-211905-3, 2005.
Xie, et al., “Strong Green Emission from α-SiAlON Activated by Divalent Ytterbium under Blue Light Irradiation”, J. Phys. Chem. B 2005, 109, 9490-9494.
Sakuma, et al., “White Light-Emitting Diode Lamps Using Oxynitride and Nitride Phosphor Materials” IEICE Trans. Electron., vol. E88-C, No. 11, 2057-2064, Nov. 2005.
Uheda, et al., “Luminescence Properties of a Red Phosphor, CaAlSiN3:Eu2+, for White Light Emitting Diodes”, Electrochemical and Solid-state Letters, vol. 9, No. 4, pp. H22-H25, 2006.
Hamre Schumann Mueller & Larson P.C.
Panasonic Corporation
Yamnitzky Marie R.
LandOfFree
Phosphor composition and method for producing the same, and... 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 composition and method for producing the same, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phosphor composition and method for producing the same, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4111626