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  Patent History
  • Application
    CN 2007828714 2007-07-20
  • Granted
    CN 101496188 2009-07-29

granted patent: Method of making white light LEDs and continuously color tunable LEDs

TitleMethod of making white light LEDs and continuously color tunable LEDs
Granted PatentCN 101496188
Granted Date2009-07-29
Priority Date2007-07-20 PCT/CN2007002208
2006-07-28 US 11/820679P
Inventors
Issue Date2009
Citation
China Patent CN 101496188. Beijing, PRC: State Intellectual Property Office (SIPO) of the P.R.C., 2009 How to Cite?
AbstractA light emitting diode comprising of a fluorescent microsphere coating is proposed. The coating consists of fluorescent microspheres which fluoresce at green and red wavelengths, excited by a shorter wavelength LED. Due to the micron-scale dimension of the spheres, they are non-resolvable to the human eye and the overall optical output appears as color mixed. By varying the proportions of green and red fluorescent microspheres and the wavelength of the excitation source, the color of the optical output can be tuned. If the optical output has of blue, green and red components in the correct proportions, white color emission can be achieved. The light emitting diode can be sectioned into multiple individually-addressable regions. Each section can emit at a different wavelength according to the type of fluorescent microspheres coated.; By varying the intensity of the blue, green and red regions by changing the bias voltage, the output wavelength (color) can be continuously tuned (varied).
Persistent Identifierhttp://hdl.handle.net/10722/206712

 

DC FieldValueLanguage
dc.date.accessioned2014-11-25T04:19:18Z-
dc.date.available2014-11-25T04:19:18Z-
dc.date.issued2009en_US
dc.identifier.citationChina Patent CN 101496188. Beijing, PRC: State Intellectual Property Office (SIPO) of the P.R.C., 2009en_US
dc.identifier.urihttp://hdl.handle.net/10722/206712-
dc.description.abstractA light emitting diode comprising of a fluorescent microsphere coating is proposed. The coating consists of fluorescent microspheres which fluoresce at green and red wavelengths, excited by a shorter wavelength LED. Due to the micron-scale dimension of the spheres, they are non-resolvable to the human eye and the overall optical output appears as color mixed. By varying the proportions of green and red fluorescent microspheres and the wavelength of the excitation source, the color of the optical output can be tuned. If the optical output has of blue, green and red components in the correct proportions, white color emission can be achieved. The light emitting diode can be sectioned into multiple individually-addressable regions. Each section can emit at a different wavelength according to the type of fluorescent microspheres coated.; By varying the intensity of the blue, green and red regions by changing the bias voltage, the output wavelength (color) can be continuously tuned (varied).en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License for public patent documentsen_US
dc.titleMethod of making white light LEDs and continuously color tunable LEDsen_US
dc.typePatenten_US
dc.identifier.authorityCHOI, HOIWAI=rp00108en_US
dc.description.naturepublished_or_final_versionen_US
dc.identifier.hkuros192489en_US
dc.contributor.inventorCHOI, HOIWAIen_US
patents.identifier.applicationCN 2007828714en_US
patents.identifier.grantedCN 101496188en_US
patents.description.assigneeUNIV HONG KONG [HK]en_US
patents.description.countryChina, PRCen_US
patents.date.granted2009-07-29en_US
patents.date.application2007-07-20en_US
patents.date.priority2007-07-20 PCT/CN2007002208en_US
patents.date.priority2006-07-28 US 11/820679Pen_US
patents.description.cccnen_US
patents.relation.familyEP 2047524 (A1) 2009-04-15en_US
patents.relation.familyJP 2009545142 (A) 2009-12-17en_US
patents.relation.familyUS 2008023715 (A1) 2008-01-31en_US
patents.relation.familyWO 2008014675 (A1) 2008-02-07en_US
patents.description.kindAen_US
patents.typePatent_granteden_US

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