WHITE LIGHT EMITTING DEVICES INCLUDING BOTH RED AND MULTI-PHOSPHOR BLUE-SHIFTED-YELLOW SOLID STATE EMITTERS

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United States of America Patent

APP PUB NO 20160254421A1
SERIAL NO

14633832

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Light emitting devices include a red solid state emitter and a blue-shifted-yellow solid state emitter that comprises a blue light emitting diode (“LED”) and an associated luminophoric medium that includes first, second and third luminescent materials that emit light having a dominant wavelength in the respective green, yellow and red color ranges. Each blue-shifted-yellow solid state emitter emits light having a color point on the 1931 CIE Chromaticity Diagram in a region defined by ccx, ccy coordinates of (0.226, 0.295), (0.295, 0.298), (0.323, 0.360), (0.344, 0.358), (0.422, 0.496), (0.391, 0.517), (0.371, 0.477), (0.506, 0.303), (0.226, 0.295). These devices emit light having a color point that is within a 4-step MacAdam ellipse of the black-body locus.

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Patent Owner(s)

Patent OwnerAddress
CREE INC4600 SILICON DRIVE DURHAM NC 27703

International Classification(s)

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  • 2015 Application Filing Year
  • H01L Class
  • 25498 Applications Filed
  • 22451 Patents Issued To-Date
  • 88.06 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20152016201720182019202020212022202320240255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Reiherzer, Jesse Colin Raleigh, US 57 1403

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Patent Citation Ranking

  • 11 Citation Count
  • H01L Class
  • 75.67 % this patent is cited more than
  • 9 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges1792827316886303131891006776342711301 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +050010001500200025003000350040004500500055006000650070007500800085009000

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