发明授权
- 专利标题： Light emitting device that restores abnormal light emitting element
- 专利标题（中）： 恢复异常发光元件的发光装置
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申请号： US12934720申请日： 2009-03-26
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公开(公告)号： US08513898B2公开(公告)日： 2013-08-20
- 发明人: Masanao Okawa , Hirofumi Takaki , Shin Ukegawa , Minoru Maehara , Hirofumi Konishi
- 申请人： Masanao Okawa , Hirofumi Takaki , Shin Ukegawa , Minoru Maehara , Hirofumi Konishi
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： Greenblum & Bernstein, P.L.C.
- 优先权： JPP2008-080241 20080326
- 国际申请： PCT/JP2009/056195 WO 20090326
- 国际公布： WO2009/119773 WO 20091001
- 主分类号： G05F1/00
- IPC分类号： G05F1/00
摘要：
A light emitting device includes: a plurality of light emitting elements configured to emit light when a direct current is supplied thereto; and a direct current power supply circuit configured to supply an electric current of a given level or more to the light emitting elements. The light emitting device further includes: a light emitting element voltage detection circuit configured to detect a voltage applied to the light emitting elements; and a forward/reverse inverting circuit configured, when the light emitting element voltage detection circuit detects an abnormality in a light emitting element, to apply a reverse voltage to the light emitting element in which the abnormality is detected.
公开/授权文献
- US20110101875A1 LIGHT EMITTING DEVICE 公开/授权日：2011-05-05
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