Illumination – Light source or light source support and luminescent material
Reexamination Certificate
2011-06-14
2011-06-14
Sember, Thomas M (Department: 2885)
Illumination
Light source or light source support and luminescent material
C362S097200, C362S097300, C362S293000, C313S503000, C257S098000
Reexamination Certificate
active
07959312
ABSTRACT:
A white light emitting device including: a blue light emitting diode chip having a dominant wavelength of 443 to 455 nm; a red phosphor disposed around the blue light emitting diode chip, the red phosphor excited by the blue light emitting diode chip to emit red light; and a green phosphor disposed around the blue light emitting diode chip, the green phosphor excited by the blue light emitting diode chip to emit green light, wherein the red light emitted from the red phosphor has a color coordinate falling within a space defined by four coordinate points (0.5448, 0.4544), (0.7079, 0.2920), (0.6427, 0.2905) and (0.4794, 0.4633) based on the CIE 1931 chromaticity diagram, and the green light emitted from the green phosphor has a color coordinate falling within a space defined by four coordinate points (0.1270, 0.8037), (0.4117, 0.5861), (0.4197, 0.5316) and (0.2555, 0.5030) based on the CIE 1931 color chromaticity diagram.
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Hahm Hun Joo
Han Seong Yeon
Jeong Young June
Kim Ho Yeon
Kim Hyung Suk
Samsung LED Co., Ltd.
Sember Thomas M
Sughrue & Mion, PLLC
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