发明授权
- 专利标题: Light emitting device adapted for AC drive
- 专利标题(中): 适用于交流驱动的发光装置
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申请号: US12995483申请日: 2009-06-11
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公开(公告)号: US08530906B2公开(公告)日: 2013-09-10
- 发明人: Tim Dekker , Adrianus Sempel , Theodorus Johannes Petrus Van Den Biggelaar
- 申请人: Tim Dekker , Adrianus Sempel , Theodorus Johannes Petrus Van Den Biggelaar
- 申请人地址: NL Eindhoven
- 专利权人: Koninklijke Philips N.V.
- 当前专利权人: Koninklijke Philips N.V.
- 当前专利权人地址: NL Eindhoven
- 代理商 John F. Salazar; Mark L. Beloborodov
- 优先权: EP08158366 20080617
- 国际申请: PCT/IB2009/052494 WO 20090611
- 国际公布: WO2009/153715 WO 20091223
- 主分类号: H01L27/15
- IPC分类号: H01L27/15
摘要:
A light emitting device comprising a first common electrode (11; 21), a structured conducting layer (12; 22), forming a set of electrode pads (14; 24a, 24b) electrically isolated from each other, a dielectric layer (13; 23), interposed between the first common electrode layer (11; 21) and the structured conducting layer (12; 22), a second common electrode (15; 30), and a plurality of light emitting elements (16; 20a, 20b), each light emitting element being electrically connected between one of the electrode pads (14; 24a, 24b) and the second common electrode (15; 30), so as to be connected in series with a capacitor (18; 31) comprising one of the electrode pads (14; 24a, 24b), the dielectric layer (13; 23), and the first common electrode (11; 21). When an alternating voltage is applied between the first and second common electrodes, the light emitting elements will be powered through a capacitive coupling, also providing current limitation. During operation of the light emitting device, a shorts circuit failure in one light emitting element will affect only light emitting elements connected to the same capacitor. Further, the short circuit current will be limited by this capacitor.
公开/授权文献
- US20110084624A1 LIGHT EMITTING DEVICE ADAPTED FOR AC DRIVE 公开/授权日:2011-04-14
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