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    • 114. 发明授权
    • Light-emitting diode with non-metallic reflector
    • 具有非金属反射器的发光二极管
    • US08525200B2
    • 2013-09-03
    • US12269497
    • 2008-11-12
    • Ding-Yuan ChenWen-Chih ChiouChen-Hua Yu
    • Ding-Yuan ChenWen-Chih ChiouChen-Hua Yu
    • H01L33/00H01L21/00
    • H01L33/16H01L33/0079H01L33/10
    • A light-emitting diode (LED) device is provided. The LED device has a substrate, a reflective structure over the substrate, and an LED structure over the reflective structure. The reflective structure is formed of non-metallic materials. In one embodiment, the reflective structure is formed of alternating layers of different non-metallic materials having different refractive indices. In another embodiment, the reflective structure is formed of alternating layers of high-porosity silicon and low-porosity silicon. In yet another embodiment, the reflective structure is formed of silicon dioxide, which may allow the use of fewer layers. The reflective structure may be formed directly on the same substrate as the LED structure or formed on a separate substrate and then bonded to the LED structure.
    • 提供了一种发光二极管(LED)装置。 LED器件具有衬底,衬底上的反射结构以及反射结构上的LED结构。 反射结构由非金属材料形成。 在一个实施例中,反射结构由具有不同折射率的不同非金属材料的交替层形成。 在另一个实施例中,反射结构由高孔隙率硅和低孔隙率硅的交替层形成。 在另一个实施例中,反射结构由二氧化硅形成,其可以允许使用更少的层。 反射结构可以直接形成在与LED结构相同的基板上,或者形成在单独的基板上,然后结合到LED结构。