发明名称 |
Light emitting device for AC power operation |
摘要 |
Disclosed is an improved light-emitting device for an AC power operation. A conventional light emitting device employs an AC light-emitting diode having arrays of light emitting cells connected in reverse parallel. The arrays in the prior art alternately repeat on/off in response to a phase change of an AC power source, resulting in short light emission time during a 1/2 cycle and the occurrence of a flicker effect. An AC light-emitting device according to the present invention employs a variety of means by which light emission time is prolonged during a 1/2 cycle in response to a phase change of an AC power source and a flicker effect can be reduced. For example, the means may be switching blocks respectively connected to nodes between the light emitting cells, switching blocks connected to a plurality of arrays, or a delay phosphor. Further, there is provided an AC light-emitting device, wherein a plurality of arrays having the different numbers of light emitting cells are employed to increase light emission time and to reduce a flicker effect. |
申请公布号 |
EP2536255(A1) |
申请公布日期 |
2012.12.19 |
申请号 |
EP20120179804 |
申请日期 |
2006.05.09 |
申请人 |
SEOUL OPTO DEVICE CO., LTD. |
发明人 |
LEE, CHUNG HOON;SPECK, JAMES S.;KIM, HONG SAN;KIM, JAE JO;KIM, SUNG HAN;LEE, JAE HO |
分类号 |
H01L33/06;H05B33/08;H01L33/32;H01L33/50 |
主分类号 |
H01L33/06 |
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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