| 发明名称 | Light-emitting device | ||
| 摘要 | 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. | ||
| 申请公布号 | US9231151(B2) | 申请公布日期 | 2016.01.05 |
| 申请号 | US201213618544 | 申请日期 | 2012.09.14 |
| 申请人 | EPISTAR CORPORATION | 发明人 | Hsu Ta-Cheng;Yang Ya-Lan;Su Ying-Yong;Yeh Ching-Shian;Huang Chao-Shun;Lee Ya-Ju |
| 分类号 | H01J1/62;H01L33/00;H01L33/22 | 主分类号 | H01J1/62 |
| 代理机构 | Ditthavong & Steiner, P.C. | 代理人 | Ditthavong & Steiner, P.C. |
| 主权项 | 1. A light-emitting device, comprising: 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 an 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. | ||
| 地址 | Hsinchu TW | ||