公开(公告)号：US20190319170A1

公开(公告)日：2019-10-17

申请号：US16453520

申请日：2019-06-26

Applicant: EPISTAR CORPORATION

Inventor： Ta-Cheng HSU ,  Ching-Shian YEH ,  Chao-Shun HUANG ,  Ying-Yong SU ,  Ya-Lan YANG ,  Ya-Ju LEE

IPC: H01L33/22 ,  H01L33/00 ,  H01L33/32

Abstract: A light-emitting device comprises a textured substrate comprising a plurality of textured structures, 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 and having a second top-view shape, wherein the first top-view shape comprises a circle or an ellipse, the first top-view shape comprises a first periphery and the second top-view shape comprises a second periphery, the first periphery is enclosed by the second periphery, and various distances are between each of the first periphery and the second periphery.

公开(公告)号：US20170365740A1

公开(公告)日：2017-12-21

申请号：US15691357

申请日：2017-08-30

Applicant: EPISTAR CORPORATION

Inventor： Ta-Chen HSU ,  Ching-Shian YEH ,  Chao-Shun HUANG ,  Ying-Yong SU ,  Ya-Lan YANG ,  Ya-Ju LEE

IPC: H01L33/22 ,  H01L33/32 ,  H01L33/00

CPC classification number: H01L33/22 ,  H01L33/007 ,  H01L33/32

Abstract: A light-emitting device comprises a textured substrate comprising a plurality of textured structures, 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 one of the plurality of textured structures comprises a top portion and a bottom portion, wherein a first distance between a first projection of the top portion on the bottom portion and the bottom portion at one side is different from a second distance between a second projection of the top portion on the bottom portion and the bottom portion at another side.

公开(公告)号：US20210050478A1

公开(公告)日：2021-02-18

申请号：US16539539

申请日：2019-08-13

Applicant: EPISTAR CORPORATION

Inventor： Ying-Yong SU ,  Hsin-Mao LIU ,  Wei-Shan HU ,  Ching-Tai CHENG

IPC: H01L33/20 ,  H01L33/38

Abstract: The light-emitting diode package includes a plurality of bumps being a couple corresponding to each other. Each of the bumps has a first part and a second part placed under the first part, and a gap is formed between the bumps in a period-repeating wriggle shape or an irregular wriggle shape. Accordingly, the distance between the bumps of the light-emitting diode package is small, which results in a less stress being concentrated at the space between the bumps, as a result, a crack is difficultly caused by the stress to the light-emitting diode package. In other words, the structural strength between the bumps and the covering part is enhanced. Still, while being manufactured, the yield rate of the light-emitting diode package is also improved since there is almost no crack to reduce the yield rate.

公开(公告)号：US20160118538A1

公开(公告)日：2016-04-28

申请号：US14986791

申请日：2016-01-04

Applicant: EPISTAR CORPORATION

Inventor： Ta-Cheng HSU ,  Ya-Lan Yan ,  Ying-Yong SU ,  Ching-Shian YEH ,  Chao-Shun Huang ,  Ya-Ju Lee

IPC: H01L33/22 ,  H01L33/32

CPC classification number: H01L33/22 ,  H01L33/007 ,  H01L33/32

Abstract: A light-emitting device comprises a textured substrate comprising a plurality of textured structures, 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 and having a second top-view shape, wherein the first top-view shape comprises a circle or an ellipse, the first top-view shape comprises a first periphery and the second top-view shape comprises a second periphery, the first periphery is enclosed by the second periphery, and various distances are between each of the first periphery and the second periphery.

Abstract translation: 发光装置包括包含多个纹理结构的纹理化衬底，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 以及平行于顶部并具有第二顶视图形状的底部部分，其中第一顶视图形状包括圆形或椭圆形，第一顶视图形状包括第一周边和第二顶视图形状 包括第二周边，第一周边由第二周边包围，并且在第一周边和第二周边之间各个距离。

公开(公告)号：US20190067518A1

公开(公告)日：2019-02-28

申请号：US16049337

申请日：2018-07-30

Applicant: EPISTAR CORPORATION

Inventor： Ta-Cheng HSU ,  Ching-Shian YEH ,  Chao-Shun HUANG ,  Ying-Yong SU ,  Ya-Lan YANG ,  Ya-Ju LEE

IPC: H01L33/22 ,  H01L33/32 ,  H01L33/00

CPC classification number: H01L33/22 ,  H01L33/007 ,  H01L33/32

Abstract: A light-emitting device comprises a textured substrate comprising a plurality of textured structures, 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 and having a second top-view shape, wherein the first top-view shape comprises a circle or an ellipse, the first top-view shape comprises a first periphery and the second top-view shape comprises a second periphery, the first periphery is enclosed by the second periphery, and various distances are between each of the first periphery and the second periphery.