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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11322484 B1

PDFFull Text
Date of Patent:
May. 03, 2022

Filed:

Feb. 17, 2017

Light emitting device and lighting system having the same

Applicant:

Seoul Semiconductor Co., Ltd., Ansan-si, KR;

Inventors:

Gundula Roth, Levenhagen, DE;

Walter Tews, Greifswald, DE;

Chung-Hoon Lee, Ansan-si, KR;

Assignee:

Seoul Semiconductor Co., Ltd., Ansan-si, KR;

Attorney:

H.C. Park & Associates, PLC

Primary Examiner:

Matthew E Hoban

Int. Cl.
CPC ...
H01L 25/075 (2006.01); H01L 33/50 (2010.01); C09K 11/77 (2006.01); H05B 33/14 (2006.01); H05B 45/00 (2022.01); H05B 45/20 (2020.01); H05B 45/40 (2020.01); H05B 47/16 (2020.01); F21K 9/00 (2016.01);
U.S. Cl.
CPC ...
H01L 25/0753 (2013.01); C09K 11/7734 (2013.01); C09K 11/7735 (2013.01); C09K 11/7738 (2013.01); H01L 33/504 (2013.01); H05B 33/14 (2013.01); H05B 45/00 (2020.01); H05B 45/20 (2020.01); H05B 45/40 (2020.01); H05B 47/16 (2020.01); F21K 9/00 (2013.01); H01L 33/50 (2013.01); H01L 2924/0002 (2013.01); Y02B 20/00 (2013.01); Y02B 20/40 (2013.01);
Abstract

The present invention provides a light emitting device comprising a first light emitting portion that emits white light at a color temperature of 6000K or more and a second light emitting portion that emits white light at a color temperature of 3000K or less, which include light emitting diode chips and phosphors and are independently driven. The present invention has an advantage in that a light emitting device can be diversely applied in a desired atmosphere and use by realizing white light with different light spectrums and color temperatures. Particularly, the present invention has the effect on health by adjusting the wavelength of light or the color temperature according to the circadian rhythm of humans.

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