LED with current confinement structure and surface roughening
    102.
    发明授权
    LED with current confinement structure and surface roughening 有权
    LED具有电流限制结构和表面粗糙化

    公开(公告)号:US08541788B2

    公开(公告)日:2013-09-24

    申请号:US12581759

    申请日:2009-10-19

    IPC分类号: H01L27/15

    摘要: A light emitting diode having a vertical orientation with an ohmic contact on portions of a top surface of the diode and a reflective layer adjacent the light emitting region of the diode. This light emitting diode includes a confinement structure. The confinement structure may be an opening in the reflective layer generally beneath the top ohmic contact that defines a non-contact area between the reflective layer and the light emitting region of the diode to encourage current flow to take place other than at the non-contact area to in turn decrease the number of light emitting recombinations beneath the ohmic contact and increase the number of light emitting recombinations in the areas not beneath said ohmic contact. The LED may include roughened emitting surfaces to further enhance light extraction.

    摘要翻译: 具有在二极管的顶表面的部分上的欧姆接触的垂直取向的发光二极管和与二极管的发光区相邻的反射层。 该发光二极管包括限制结构。 约束结构可以是反射层中通常在顶部欧姆接触下方的开口,其限定反射层和二极管的发光区域之间的非接触区域,以促进除非接触之外的电流流动 面积又减少欧姆接触下方的发光复合数,并增加不在所述欧姆接触下方的区域中的发光复合数。 LED可以包括粗糙化的发射表面以进一步增强光提取。