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Fabrication of YAG glass ceramic and its application for light emitting diodes

机译:YAG玻璃陶瓷的制备及其在发光二极管中的应用

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In this paper, we present our recent research on phosphor glass ceramic technology, consisting of a ceramic plate of Ce (III) doped yttrium aluminum garnet (YAG:Ce) YAG glass ceramic. The glass ceramic is fabricated through high temperature solid state reaction method, and is detected to confirm crystal phase by SEM and XRF. The white light is successfully observed by packaging the glass ceramic slice to the blue LED chip. The ceramic packaged LED sample shows relatively lower CCT than the conventional phosphor dispensing LED sample. Controllable optical and geometrical properties of the YAG glass ceramic plate will bring about distinctive improvement in manufacturing of identical CCTs for high power white LEDs. The combination of phosphor ceramic slice with blue LED chip of a specific wavelength, if measured before the final assembly, enables targeted production of specific CCT white LEDs. The phosphor glass ceramic technology can be utilized for the combination with the thin flip chip LED technology, which permits a direct bonding of the ceramic slice to the light source surface of the LED. It is expected that this glass-ceramic is a promising candidate.
机译:在本文中,我们介绍了我们最近对磷光玻璃陶瓷技术的研究,该技术由掺Ce(III)的钇铝石榴石(YAG:Ce)YAG玻璃陶瓷陶瓷板组成。该玻璃陶瓷是通过高温固相反应法制造的,并通过SEM和XRF进行检测以确认晶相。通过将玻璃陶瓷切片包装到蓝色LED芯片上,成功观察到了白光。陶瓷封装的LED样品显示的色温比传统的荧光粉分配LED样品低。 YAG玻璃陶瓷板的可控光学和几何特性将在制造用于大功率白光LED的相同CCT方面带来显着改善。如果在最终组装之前进行测量,将磷光体陶瓷切片与特定波长的蓝色LED芯片组合在一起,就可以有针对性地生产特定的CCT白光LED。可以将磷光玻璃陶瓷技术与薄倒装芯片LED技术结合使用,该技术允许将陶瓷切片直接粘合到LED的光源表面。预期该玻璃陶瓷是有前途的候选物。

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