公开(公告)号：US10199542B2

公开(公告)日：2019-02-05

申请号：US15332711

申请日：2016-10-24

Applicant: EPISTAR CORPORATION

Inventor： Chien-Hua Chou ,  Tai-Chun Wang ,  Chih-Tsung Su ,  Biau-Dar Chen

IPC: H01L29/88 ,  H01L29/861 ,  H01L33/38 ,  H01L33/14

Abstract: A light-emitting device comprises a semiconductor stack; a pad electrode comprising a periphery disposed on the semiconductor stack; and a finger electrode connected to the pad electrode, wherein the finger electrode comprises a first portion extended from the periphery of the pad electrode and a second portion away from the pad electrode, the first portion comprises a first side and a second side, the first side is opposite to the second side, the first side comprises a first arc having a first curvature radius, and the first curvature radius is larger than 10 μm.

公开(公告)号：US11742459B2

公开(公告)日：2023-08-29

申请号：US17879526

申请日：2022-08-02

Applicant: EPISTAR CORPORATION

Inventor： Chien-Hua Chou ,  Tai-Chun Wang ,  Chih-Tsung Su ,  Biau-Dar Chen

IPC: H01L33/38 ,  H01L33/14

CPC classification number: H01L33/38 ,  H01L33/145

Abstract: A light-emitting device comprises a semiconductor stack; a pad electrode comprising a periphery disposed on the semiconductor stack; and a finger electrode connected to the pad electrode, wherein the finger electrode comprises a first portion extended from the periphery of the pad electrode and a second portion away from the pad electrode, the first portion comprises a first side and a second side, the first side is opposite to the second side, the first side comprises a first arc having a first curvature radius, and the first curvature radius is larger than 10 μm.

公开(公告)号：US11430916B2

公开(公告)日：2022-08-30

申请号：US17087310

申请日：2020-11-02

Applicant: EPISTAR CORPORATION

Inventor： Chien-Hua Chou ,  Tai-Chun Wang ,  Chih-Tsung Su ,  Biau-Dar Chen

IPC: H01L33/00 ,  H01L33/38 ,  H01L33/14

Abstract: A light-emitting device comprises a semiconductor layer; a pad electrode comprising a periphery disposed on the semiconductor layer; a finger electrode connected to the pad electrode, wherein the finger electrode comprises a first portion extended from the periphery of the pad electrode and a second portion connected to the first portion; and a plurality of first current blocking regions formed on the semiconductor layer, separated from the pad electrode and formed under the finger electrode, wherein one of the plurality of first current blocking regions is most close to the pad electrode and is separated from the pad electrode by a first distance, adjacent two of others of the plurality of first current blocking regions are separated from each other by a second distance, and the first distance is longer than the second distance.

公开(公告)号：US10825956B2

公开(公告)日：2020-11-03

申请号：US16670726

申请日：2019-10-31

Applicant: EPISTAR CORPORATION

Inventor： Chien-Hua Chou ,  Tai-Chun Wang ,  Chih-Tsung Su ,  Biau-Dar Chen

IPC: H01L33/38 ,  H01L33/14

Abstract: A light-emitting device comprises a semiconductor layer; a pad electrode comprising a periphery disposed on the semiconductor layer; a finger electrode connected to the pad electrode, wherein the finger electrode comprises a first portion extended from the periphery of the pad electrode and a second portion connected to the first portion; and a plurality of first current blocking regions formed on the semiconductor layer, separated from the pad electrode and formed under the finger electrode, wherein one of the plurality of first current blocking regions is most close to the pad electrode and is separated from the pad electrode by a first distance, adjacent two of others of the plurality of first current blocking regions are separated from each other by a second distance, and the first distance is longer than the second distance.

公开(公告)号：US09530934B1

公开(公告)日：2016-12-27

申请号：US14977686

申请日：2015-12-22

Applicant: EPISTAR CORPORATION

Inventor： Chien-Hua Chou ,  Tai-Chun Wang ,  Biau-Dar Chen ,  Chih-Tsung Su

IPC: H01L29/88 ,  H01L29/861 ,  H01L33/38 ,  H01L33/14

CPC classification number: H01L33/38 ,  H01L33/145

Abstract: A light-emitting device includes a semiconductor stack; a pad electrode comprising a periphery disposed on the semiconductor stack; and a finger electrode connected to the pad electrode, wherein the finger electrode includes a first portion extended from the periphery of the pad electrode and a second portion away from the pad electrode, the first portion includes a first side and a second side, the first side is opposite to the second side, the first side comprises a first arc having a first curvature radius, and the first curvature radius is larger than 10 μm.

Abstract translation: 发光器件包括半导体叠层; 包括设置在所述半导体堆叠上的外围的焊盘电极; 以及连接到所述焊盘电极的指状电极，其中所述指状电极包括从所述焊盘电极的周边延伸的第一部分和远离所述焊盘电极的第二部分，所述第一部分包括第一侧和第二侧，所述第一部分 一侧与第二侧相反，第一侧包括具有第一曲率半径的第一弧形，第一曲率半径大于10μm。