发明名称 |
APPARATUS FOR DRIVING LIGHT EMITTING DEVICE |
摘要 |
An apparatus for driving a light emitting device according to an aspect of the invention may include: a DC/DC converter unit generating driving power on the basis of an input voltage and supplying the generated driving power to an anode of a light emitting unit including a plurality of light emitting devices; a current source controlling to keep current flowing through the light emitting unit constant; a feedback circuit unit detecting voltage at a cathode of the light emitting unit; and a feedback coupling circuit unit coupling the output of the feedback circuit unit and the input of the DC/DC converter unit to supply the input voltage of the DC/DC converter unit according to the voltage detected by the feedback circuit unit and an output voltage of the DC/DC converter unit.
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申请公布号 |
US2010102756(A1) |
申请公布日期 |
2010.04.29 |
申请号 |
US20090578823 |
申请日期 |
2009.10.14 |
申请人 |
SAMSUNG ELECTRO-MECHANICS CO. LTD. |
发明人 |
SHIN SANG CHEOL;MIN BYOUNG OWN;GONG JUNG CHUL;GOO BON AHM |
分类号 |
H05B41/36 |
主分类号 |
H05B41/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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