CKC & Partners Co, LLC
White light emitting device
A white light emitting device includes a blue LED chip having a dominant emission wavelength of about 440-465 nm, and a phosphor layer configured to be excited by the dominant emission wavelength of the blue LED chip. The phosphor layer includes a first phosphor having a peak emission wavelength of about 480-519 nm, a second phosphor having a peak emission wavelength of about 520-560 nm, and a third phosphor having a peak emission wavelength of about 620-670 nm. The first phosphor and the second phosphor both have a garnet structure as represented by A3B5O12:Ce, A is selected from the group consisting of Y, Lu, and a combination of thereof, and B is selected from the group consisting of Al, Ga, and a combination of thereof.
Lextar Electronics Corporation
Y H H H C H H C C C H C H
Y02B H01L H01L H01L C09K H01L H01L C09K C09K C09K H01L C09K H01L
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Zong-Han Kuo-Chan Cheng-Ping
Yu Hung Chang