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(A4) 申请公布日期 2014.11.05
申请号 EP20090724406 申请日期 2009.03.26
申请人 PANASONIC CORPORATION 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
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