Light emitting diode with Bragg reflector

    公开(公告)号:US10038121B2

    公开(公告)日:2018-07-31

    申请号:US15045279

    申请日:2016-02-17

    Abstract: A light emitting diode including a first-type semiconductor layer, an emitting layer, a second-type semiconductor layer, a first electrode, a second electrode, and a Bragg reflector structure. The emitting layer is configured to emit a light beam and is located between the first-type semiconductor layer and the second-type semiconductor layer. The light beam has a peak wavelength in a light emitting wavelength range. The first-type semiconductor layer, the emitting layer, and the second-type semiconductor layer are located on a same side of the Bragg reflector structure. A reflectance of the Bragg reflector structure is greater than or equal to 95% in a reflective wavelength range at least covering 0.8X nm to 1.8X nm, and X is the peak wavelength of the light emitting wavelength range.

    LIGHT EMITTING DIODE
    25.
    发明申请
    LIGHT EMITTING DIODE 审中-公开
    发光二极管

    公开(公告)号:US20160240758A1

    公开(公告)日:2016-08-18

    申请号:US15045266

    申请日:2016-02-17

    Abstract: Provided is a light emitting diode (LED) mounted on a carrier substrate and including a semiconductor epitaxial structure and at least one electrode pad structure. The semiconductor epitaxial structure is electrically connected to the carrier substrate. The electrode pad structure includes a eutectic layer, a blocking layer and an extension layer. The eutectic layer is adapted for eutectic bonding to the carrier substrate. The blocking layer is between the eutectic layer and the semiconductor epitaxial structure. The blocking layer blocks the diffusion of the material of the eutectic layer in the eutectic bonding process. The extension layer is between the eutectic layer and the semiconductor epitaxial structure. The extension layer reduces the stress on the LED produced by thermal expansion and contraction of the substrate during the eutectic bonding process, so as to prevent the electrode pad structure from cracking, and maintain the quality of the LED.

    Abstract translation: 提供了一种安装在载体基板上并包括半导体外延结构和至少一个电极焊盘结构的发光二极管(LED)。 半导体外延结构电连接到载体衬底。 电极焊盘结构包括共晶层,阻挡层和延伸层。 共晶层适于与载体基底共晶结合。 阻挡层在共晶层和半导体外延结构之间。 阻挡层阻止共晶粘合过程中共晶层的材料的扩散。 扩展层在共晶层和半导体外延结构之间。 延伸层在共晶接合工艺期间降低由基板的热膨胀和收缩产生的LED上的应力,以防止电极焊盘结构破裂,并且保持LED的质量。

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