公开(公告)号：US20220367563A1

公开(公告)日：2022-11-17

申请号：US17877550

申请日：2022-07-29

Applicant: EPISTAR CORPORATION

Inventor： Cheng-Yu CHEN ,  Hui-Chun YEH ,  Chien-Fu SHEN

IPC: H01L27/15 ,  H01L33/38

Abstract: A method for manufacturing a light-emitting device, includes: forming a semiconductor stack on a substrate, wherein the semiconductor stack includes a first semiconductor layer, a second semiconductor layer and an active region formed therebetween; removing portions of the semiconductor stack to form a plurality of mesas and exposing a part of the first semiconductor layer, wherein the part of the first semiconductor layer includes a first portion and a second portion; forming a plurality of trenches by removing the first portion of the part of the first semiconductor to exposing a top surface of the substrate and a side wall of the first semiconductor, wherein the plurality of trenches defining a plurality of light-emitting units in the semiconductor stack; wherein in a top view, the plurality of trenches includes a first trench extending along a first direction and a second trench extending along a second direction not parallel with the first trench; and wherein the second trench includes an end; forming connection electrodes on the semiconductor stack to electrically connect the adjacent light-emitting units; and separating the substrate and the second portion of the part of the first semiconductor layer along a first dicing line not parallel with the second direction; wherein the first dicing line intersects the end of the second trench.

公开(公告)号：US20210066390A1

公开(公告)日：2021-03-04

申请号：US17006459

申请日：2020-08-28

Applicant: EPISTAR CORPORATION

Inventor： Cheng-Yu CHEN ,  Hui-Chun YEH ,  Chien-Fu SHEN

IPC: H01L27/15 ,  H01L33/38

Abstract: A light-emitting device, includes: a substrate, comprising a top surface; a first edge and a second edge opposite to the first edge; a plurality of light-emitting units arranged in N rows on the substrate, wherein the N rows comprises a first row at the first edge and a Nth row at the second edge; and a plurality of connection electrodes, formed on and electrically connecting the plurality of light-emitting units; wherein the plurality of light-emitting units comprises a first light-emitting unit in the first row, and the first light-emitting unit comprises a first notch on the first edge wherein the first notch comprises a bottom composed by the top surface.