发明名称 |
LIGHT EMITTING DEVICE |
摘要 |
An object is to provide an organic electroluminescent light emitting device and a lighting apparatus capable of applying a reverse voltage to an abnormal light emitting element reliably such that a refresh current flows in the abnormal light emitting element, thereby restoring the abnormal light emitting element avoiding stress on a normal light emitting element. A light emitting device 100 includes a PFC circuit 2 to which a direct current power is supplied from a diode bridge DB configured to rectify an AC power supply 1; a step-down chopper circuit 4 configured to convert a voltage output from the PFC circuit 2 into a voltage supplied to a light emitting element; a forward/reverse inverting circuit 6 configured to switch an electric current supplied to the light emitting element 8; a light emitting element current detection circuit 11; a light emitting element voltage detection circuit 12; drive ICs 13 and 14; and a microcomputer 16. The light emitting device 100 also has a light emitting element voltage-current control circuit 7 configured to control a voltage and an electric current of the light emitting element 8. |
申请公布号 |
EP2257122(B1) |
申请公布日期 |
2017.01.11 |
申请号 |
EP20090724406 |
申请日期 |
2009.03.26 |
申请人 |
Panasonic Intellectual Property Management Co., Ltd. |
发明人 |
OKAWA Masanao;TAKAKI Hirofumi;UKEGAWA Shin;MAEHARA Minoru;KONISHI Hirofumi |
分类号 |
H05B33/08;G09F9/00;H01L51/50 |
主分类号 |
H05B33/08 |
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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