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    • 5. 发明授权
    • Light-emitting device
    • 发光装置
    • US09231151B2
    • 2016-01-05
    • US13618544
    • 2012-09-14
    • Ta-Cheng HsuYa-Lan YangYing-Yong SuChing-Shian YehChao-Shun HuangYa-Ju Lee
    • Ta-Cheng HsuYa-Lan YangYing-Yong SuChing-Shian YehChao-Shun HuangYa-Ju Lee
    • H01J1/62H01L33/00H01L33/22
    • H01L33/22H01L33/007H01L33/32
    • A light-emitting device comprises a textured substrate comprising a boundary and a plurality of textured structures within the boundary, wherein the textured structures and the textured substrate are both composed of sapphire; and a light-emitting stack overlaying the textured substrate, comprising a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer, wherein each of the plurality of textured structures comprises a top portion having a first top-view shape and a bottom portion parallel to the top portion, the bottom portion having a second top-view shape, wherein the first top-view shape comprises a circle or ellipse and the second top-view shape comprises a polygon, wherein the first top-view shape and the second top-view shape overlap each other, and the textured structures are spaced apart from each other from a top view of the light-emitting device.
    • 发光器件包括纹理化衬底,其包括边界内的边界和多个纹理结构,其中纹理结构和纹理化衬底都由蓝宝石构成; 以及覆盖所述纹理化衬底的发光堆叠,包括第一导电类型半导体层,有源层和第二导电类型半导体层,其中所述多个纹理结构中的每一个包括具有第一顶视形状的顶部 和与顶部平行的底部,底部具有第二顶视图形状,其中第一顶视图形状包括圆形或椭圆形,第二顶视图形状包括多边形,其中第一顶视图 形状和第二顶视图形状彼此重叠,并且纹理结构从发光装置的顶视图彼此间隔开。