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    • 20. 发明授权
    • White LED device having LED chips directly driven by alternating current
    • 白色LED器件,具有直接由交流电驱动的LED芯片
    • US09185761B2
    • 2015-11-10
    • US13883832
    • 2011-03-01
    • Hongjie ZhangMing ZhangChengyu LiKun ZhaoDongming LiLi Zhang
    • Hongjie ZhangMing ZhangChengyu LiKun ZhaoDongming LiLi Zhang
    • H01J1/62H01L33/00H05B33/08H01L33/50
    • H05B33/0845H01L27/15H01L33/502H05B33/0809H05B33/0821
    • An Alternate Current (AC) white Light-Emitting Diode (LED) device is provided, which belongs to the technical field of white LED manufacturing. The problem to be solved by the present invention is to low-costly overcome a series of deficiencies such as the stroboflash of an AC driven LED, and the heat dissipation difficulty caused by an integrated packaging of multiple LEDs. A white LED unit includes an LED chip and a light emitting material that can emit light when being excited by the LED chip. The luminous lifetime of the light emitting material is 1-100 ms. The LED chip only comprises one PN junction. The light emitted by the LED chip is mixed with the light emitted by the light emitting material to form white light. The white LED unit is driven by AC with a frequency not more than 100 Hz. The white LED device of prevent invention uses the single PN junction chip, rather than the prior integrated packaged AC multi-LED chip.
    • 提供交流(AC)白光发光二极管(LED)装置,属于白光LED制造技术领域。 本发明要解决的问题是低成本地克服了诸如AC驱动LED的闪光灯等一系列缺陷以及由多个LED的集成封装引起的散热困难。 白色LED单元包括LED芯片和当被LED芯片激发时可以发光的发光材料。 发光材料的发光寿命为1-100ms。 LED芯片仅包括一个PN结。 由LED芯片发出的光与由发光材料发射的光混合,形成白光。 白色LED单元由AC不超过100 Hz的频率驱动。 防止发明的白色LED装置使用单个PN结芯片,而不是现有的集成封装的交流多LED芯片。