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    • 4. 发明申请
    • LIGHT EMITTING DEVICE ADAPTED FOR AC DRIVE
    • 适用于交流驱动的发光装置
    • WO2009153715A2
    • 2009-12-23
    • PCT/IB2009052494
    • 2009-06-11
    • KONINKL PHILIPS ELECTRONICS NVDEKKER TIMSEMPEL ADRIANUSVAN DEN BIGGELAAR THEODORUS J
    • DEKKER TIMSEMPEL ADRIANUSVAN DEN BIGGELAAR THEODORUS J P
    • H05B33/08H01L27/32
    • H01L27/3202H01L27/3225H01L51/5203H01L2251/5361H01L2251/564H05B33/0809H05B33/0821
    • 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.
    • 一种发光器件,包括第一公共电极(11; 21),结构化导电层(12; 22),形成彼此电隔离的一组电极焊盘(14; 24a,24b),介电层(13; 插入在第一公共电极层(11; 21)和结构化导电层(12; 22)之间的第二公共电极(15; 30)和多个发光元件(16; 20a,20b) 每个发光元件电连接在一个电极焊盘(14; 24a,24b)和第二公共电极(15; 30)之间,以便与包括以下之一的电容器(18; 31)串联连接 电极焊盘(14; 24a,24b),电介质层(13; 23)和第一公共电极(11; 21)。 当在第一和第二公共电极之间施加交流电压时,发光元件将通过电容耦合来供电,同时也提供电流限制。 在发光装置的操作期间,一个发光元件中的短路电路故障将仅影响连接到同一电容器的发光元件。 此外,短路电流将受到该电容器的限制。