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.:
Date of Patent:
Aug. 19, 2014
Filed:
Oct. 19, 2009
Chung Hoon Lee, Ansan-si, KR;
Yeo Jin Yoon, Ansan-si, KR;
Dae Won Kim, Ansan-si, KR;
Dae Sung Kal, Ansan-si, KR;
Kyung Hee YE, Ansan-si, KR;
Chung Hoon Lee, Ansan-si, KR;
Yeo Jin Yoon, Ansan-si, KR;
Dae Won Kim, Ansan-si, KR;
Dae Sung Kal, Ansan-si, KR;
Kyung Hee Ye, Ansan-si, KR;
Seoul Viosys Co., Ltd., Ansan-si, KR;
Abstract
Disclosed are an AC light emitting device with a long-persistent phosphor and an AC light emitting device module having the same. According to an exemplary embodiment of the present invention, the light emitting device includes a first light emitting diode chip and a second light emitting diode chip, each of which has a plurality of light emitting cells on a single substrate. Further, a first long-persistent phosphor is positioned on the first light emitting diode chip to perform wavelength conversion for a portion of light emitted from the first light emitting diode chip; and a second long-persistent phosphor is positioned on the second light emitting diode chip to perform wavelength conversion for a portion of light emitted from the second light emitting diode chip. The afterglow luminescence resulted from the second long-persistent phosphor is allowed to be different from that resulted from the first long-persistent phosphor, whereby a flicker effect of the AC light emitting device can be more alleviated.