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.

    Thin-film flip-chip light emitting diode having roughening surface and method for manufacturing the same
    48.
    发明授权
    Thin-film flip-chip light emitting diode having roughening surface and method for manufacturing the same 有权
    具有粗糙面的薄膜倒装芯片发光二极管及其制造方法

    公开(公告)号:US09564554B2

    公开(公告)日:2017-02-07

    申请号:US14877948

    申请日:2015-10-08

    Abstract: A thin-film flip-chip light emitting diode (LED) having a roughened surface and a method for manufacturing the same are provided. First, a substrate having a patterned structure on a surface of the substrate is provided, and the surface is roughened. A first semiconductor layer is then formed on the surface; a light emitting structure layer is then formed on the first semiconductor layer; a second semiconductor layer is then formed on the light emitting structure layer. The first and second semiconductor layers possess opposite electrical characteristics. A first contact electrode and a second contact electrode are then formed on the first semiconductor layer and the second semiconductor layer, respectively. Finally, a sub-mount is formed on the first and second contact electrodes, and the substrate is removed to form the thin-film flip-chip LED having the roughened surface. Here, the light emitting efficiency of the thin-film flip-chip LED is improved.

    Abstract translation: 提供了具有粗糙表面的薄膜倒装芯片发光二极管(LED)及其制造方法。 首先,提供在基板的表面上具有图案化结构的基板,并使表面粗糙化。 然后在表面上形成第一半导体层; 然后在第一半导体层上形成发光结构层; 然后在发光结构层上形成第二半导体层。 第一和第二半导体层具有相反的电特性。 然后分别在第一半导体层和第二半导体层上形成第一接触电极和第二接触电极。 最后,在第一接触电极和第二接触电极上形成子座,并且移除衬底以形成具有粗糙表面的薄膜倒装芯片LED。 这里,提高了薄膜倒装芯片LED的发光效率。

    LIGHT-EMITTING DIODE CHIP
    49.
    发明申请
    LIGHT-EMITTING DIODE CHIP 审中-公开
    发光二极管芯片

    公开(公告)号:US20160315238A1

    公开(公告)日:2016-10-27

    申请号:US15135574

    申请日:2016-04-22

    CPC classification number: H01L33/38 H01L33/145

    Abstract: Provided is a light-emitting diode chip including a semiconductor device layer, a first electrode, a current-blocking layer, a current-spreading layer, and a second electrode. The semiconductor device layer includes a first-type doped semiconductor layer, a second-type doped semiconductor layer, and a light-emitting layer therebetween. The first electrode is electrically connected to the first-type doped semiconductor layer. The current-blocking layer is on the second-type doped semiconductor layer. The current-blocking layer is between the current-spreading layer and the second-type doped semiconductor layer. The second electrode is on the current-spreading layer and electrically connected to the second-type doped semiconductor layer. The current-blocking layer has a first surface facing the semiconductor device layer, a second surface back on to the semiconductor device layer, and a first inclined surface. The first inclined surface is connected between the first surface and the second surface and tilted with respect to the first surface and the second surface.

    Abstract translation: 提供了包括半导体器件层,第一电极,电流阻挡层,电流扩展层和第二电极的发光二极管芯片。 半导体器件层包括第一类掺杂半导体层,第二类掺杂半导体层和它们之间的发光层。 第一电极电连接到第一掺杂半导体层。 电流阻挡层位于第二类掺杂半导体层上。 电流阻挡层在电流扩散层和第二类掺杂半导体层之间。 第二电极在电流扩展层上并电连接到第二类掺杂半导体层。 电流阻挡层具有面向半导体器件层的第一表面,反向到半导体器件层的第二表面和第一倾斜表面。 第一倾斜表面连接在第一表面和第二表面之间并相对于第一表面和第二表面倾斜。

    LIGHT EMITTING DIODE
    50.
    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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