Source: http://www.google.com/patents/US8188492?dq=6,049,612
Timestamp: 2014-12-26 19:47:58
Document Index: 28962947

Matched Legal Cases: ['Application No. 1545', 'Application No. 9514', 'Application No. 200880105091', 'Application No. 201010185274', 'Application No. 201010198537', 'Application No. 05', 'Application No. 2468']

Patent US8188492 - Light emitting device having plural light emitting diodes and at least one ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsThe present invention provides a light emitting device, comprising a first light emitting diode for emitting light in an ultraviolet wavelength region; at least one phosphor arranged around the first light emitting diode and excited by the light emitted from the first light emitting diode to emit light...http://www.google.com/patents/US8188492?utm_source=gb-gplus-sharePatent US8188492 - Light emitting device having plural light emitting diodes and at least one phosphor for emitting different wavelengths of lightAdvanced Patent SearchPublication numberUS8188492 B2Publication typeGrantApplication numberUS 12/439,052PCT numberPCT/KR2007/004066Publication dateMay 29, 2012Filing dateAug 24, 2007Priority dateAug 29, 2006Also published asUS8674380, US20090315053, US20120211781, WO2008026851A1Publication number12439052, 439052, PCT/2007/4066, PCT/KR/2007/004066, PCT/KR/2007/04066, PCT/KR/7/004066, PCT/KR/7/04066, PCT/KR2007/004066, PCT/KR2007/04066, PCT/KR2007004066, PCT/KR200704066, PCT/KR7/004066, PCT/KR7/04066, PCT/KR7004066, PCT/KR704066, US 8188492 B2, US 8188492B2, US-B2-8188492, US8188492 B2, US8188492B2InventorsSang Min Lee, Hyuck Jung Choi, Mi Hae KIMOriginal AssigneeSeoul Semiconductor Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (102), Non-Patent Citations (140), Referenced by (6), Classifications (16), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetLight emitting device having plural light emitting diodes and at least one phosphor for emitting different wavelengths of lightUS 8188492 B2Abstract The present invention provides a light emitting device, comprising a first light emitting diode for emitting light in an ultraviolet wavelength region; at least one phosphor arranged around the first light emitting diode and excited by the light emitted from the first light emitting diode to emit light having a peak wavelength longer than the wavelength of the light emitted from the first light emitting diode; and at least one second light emitting diode for emitting light having a wavelength different from the peak wavelength of the light emitted from the phosphor. According to the present invention, there is provided a white light emitting device, wherein using a light emitting diode for emitting light different in wavelength from light that is ex-cititively emitted from the phosphor, an excitation light source, i.e., light in the ultraviolet region for exciting the phosphor is effectively used, thereby improving energy conversion efficiency and improving reliability.
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A 69, 1999, 5 pp.140Yang, "Up- Conversion Fluorescence in Er3 + Yb3 + Co- Doped Oxy�Fluoride Compound Materials Based on GeO2", Natural Science Journal of Xiangtan University, vol. 23, No. 2, 2001, pp. 37-41.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8440106Mar 29, 2012May 14, 2013Seoul Semiconductor Co., Ltd.Strontium oxyorthosilicate phosphors having improved stability under a radiation load and resistance to atmospheric humidityUS8461607 *Dec 28, 2010Jun 11, 2013Hon Hai Precision Industry Co., Ltd.Light emitting diode packageUS8674380May 1, 2012Mar 18, 2014Seoul Semiconductor Co., Ltd.Light emitting device having plural light emitting diodes and plural phosphors for emitting different wavelengths of lightUS20120001205 *Dec 20, 2010Jan 5, 2012Seoul Semiconductor Co., Ltd.Light emitting device having strontium oxyorthosilicate type phosphorsUS20120098000 *Dec 28, 2010Apr 26, 2012Hon Hai Precision Industry Co., Ltd.Light emitting diode packageUS20140048834 *Oct 25, 2013Feb 20, 2014Nichia CorporationMethod for manufacturing light emitting device and light emitting device* Cited by examinerClassifications U.S. Classification257/89, 257/98, 257/100, 257/E33.074, 257/E33.061International ClassificationH01L33/50Cooperative ClassificationH01L2224/48, H01L2924/0002, C09K11/7792, H01L33/50, H01L25/0753, C09K11/7734, Y02B20/181European ClassificationC09K11/77T6, C09K11/77N6, H01L25/075NLegal EventsDateCodeEventDescriptionMar 14, 2009ASAssignmentOwner name: SEOUL SEMICONDUCTOR CO., LTD., KOREA, REPUBLIC OFFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LEE, SANG MIN;CHOI, HYUCK JUNG;KIM, MI-HAE;REEL/FRAME:022395/0823Effective date: 20090225RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google