公开(公告)号：US10749077B2

公开(公告)日：2020-08-18

申请号：US16227253

申请日：2018-12-20

Applicant: EPISTAR CORPORATION

Inventor： Chun-Yu Lin ,  Yung-Fu Chang ,  Rong-Ren Lee ,  Kuo-Feng Huang ,  Cheng-Long Yeh ,  Yi-Ching Lee ,  Ming-Siang Huang ,  Ming-Tzung Liou

IPC: H01L33/00 ,  H01L33/38 ,  H01L33/44 ,  H01L33/42 ,  H01L33/40 ,  H01L33/22 ,  H01L33/06 ,  H01L33/20

Abstract: An optoelectronic device includes a semiconductor stack including a first surface and a second surface opposite to the first surface; a first contact layer on the first surface; and a second contact layer on the second surface. The second contact layer is not overlapped with the first contact layer in a vertical direction. The second contact layer includes a plurality of dots separating to each other and formed of semiconductor material.

公开(公告)号：US10580937B2

公开(公告)日：2020-03-03

申请号：US16228575

申请日：2018-12-20

Applicant: EPISTAR CORPORATION

Inventor： Chun-Yu Lin ,  Yung-Fu Chang ,  Rong-Ren Lee ,  Kuo-Feng Huang ,  Cheng-Long Yeh ,  Yi-Ching Lee ,  Ming-Siang Huang ,  Ming-Tzung Liou

IPC: H01L33/00 ,  H01L33/38 ,  H01L33/44 ,  H01L33/42 ,  H01L33/40 ,  H01L33/22 ,  H01L33/06 ,  H01L33/20

Abstract: An optoelectronic device includes a semiconductor structure having a first side and a second side opposite to the first side, a first pad at the first side, a first finger connected to the electrode pad and having a first width, an insulating layer at the second side and comprising a first part under the first finger, the first part having a bottom surface with a second width larger than the first width and a side surface inclined to the bottom surface, and a contact layer covering the bottom surface and the side surface.

公开(公告)号：US09847454B2

公开(公告)日：2017-12-19

申请号：US14873547

申请日：2015-10-02

Applicant: EPISTAR CORPORATION

Inventor： Kuo-Feng Huang ,  Cheng-Hsing Chiang ,  Jih-Ming Tu

IPC: H01L33/22 ,  H01L33/30 ,  H01L33/00 ,  H01L33/02 ,  H01L33/06 ,  H01L33/14 ,  H01L33/38

CPC classification number: H01L33/30 ,  H01L33/0062 ,  H01L33/0095 ,  H01L33/025 ,  H01L33/06 ,  H01L33/14 ,  H01L33/22 ,  H01L33/38 ,  H01L2933/0083 ,  H01L2933/0091

Abstract: A light-emitting device is provided. The light-emitting device comprises a light-emitting stack comprising a first semiconductor layer, a second semiconductor layer and an active layer between the first semiconductor layer and the second semiconductor layer. The light-emitting device further comprises a third semiconductor layer on the light-emitting stack and comprising a first sub-layer, a second sub-layer and a roughened surface, wherein the first sub-layer has the same composition as that of the second sub-layer, and the composition of the first sub-layer is with a different atomic ratio from that of the second sub-layer. A method for manufacturing the light-emitting device is also provided.

公开(公告)号：US20210135052A1

公开(公告)日：2021-05-06

申请号：US17089377

申请日：2020-11-04

Applicant: EPISTAR CORPORATION

Inventor： Yen-Chun Tseng ,  Kuo-Feng Huang ,  Shih-Chang Lee ,  Ming-Ta Chin ,  Shih-Nan Yen ,  Cheng-Hsing Chiang ,  Chia-Hung Lin ,  Cheng-Long Yeh ,  Yi-Ching Lee ,  Jui-Che Sung ,  Shih-Hao Cheng

IPC: H01L33/14 ,  H01L33/08 ,  H01L33/20

Abstract: A semiconductor device is provided, which includes a first semiconductor structure, a second semiconductor structure, and an active region. The first semiconductor structure includes a first dopant. The second semiconductor structure is located on the first semiconductor structure and includes a second dopant different from the first dopant. The active region includes a plurality of semiconductor pairs and is located between the first semiconductor structure and the second semiconductor structure. One of the plurality of semiconductor pairs has a barrier layer and a well layer and includes the first dopant. The barrier layer has a first thickness and a first Al content, and the well layer has a second thickness and a second Al content, the second thickness is less than the first thickness, and the second Al content is less than the first Al content.

公开(公告)号：US10741721B2

公开(公告)日：2020-08-11

申请号：US16374282

申请日：2019-04-03

Applicant: EPISTAR CORPORATION

Inventor： Cheng-Feng Yu ,  Ching-Yuan Tsai ,  Yao-Ru Chang ,  Hsin-Chan Chung ,  Shih-Chang Lee ,  Wen-Luh Liao ,  Cheng-Hsing Chiang ,  Kuo-Feng Huang ,  Hsu-Hsuan Teng ,  Hung-Ta Cheng ,  Yung-Fu Chang

IPC: H01L33/06 ,  H01L33/60 ,  H01L33/64 ,  H01L33/00 ,  H01L33/30 ,  H01L33/42 ,  H01L33/46 ,  H01L33/62

Abstract: A light-emitting device is provided. The light-emitting device comprises a substrate; an insulating layer on the substrate, wherein the insulating layer comprises a first hole; a light-emitting stack on the insulating layer and comprising an active region comprising a top surface, wherein the top surface comprises a first part and a second part; and an opaque layer covering the first part of the top surface and exposing the second part of the top surface, wherein the second part is directly above the first hole.

公开(公告)号：US10205059B2

公开(公告)日：2019-02-12

申请号：US15709810

申请日：2017-09-20

Applicant: EPISTAR CORPORATION

Inventor： Chun-Yu Lin ,  Yung-Fu Chang ,  Rong-Ren Lee ,  Kuo-Feng Huang ,  Cheng-Long Yeh ,  Yi-Ching Lee ,  Ming-Siang Huang ,  Ming-Tzung Liou

IPC: H01L33/00 ,  H01L33/38 ,  H01L33/44 ,  H01L33/42 ,  H01L33/40 ,  H01L33/22 ,  H01L33/06

Abstract: The present disclosure is related to an optoelectronic device comprising a semiconductor stack comprising a first surface and a second surface opposite to the first surface; a first contact layer on the first surface; and a second contact layer on the second surface, wherein the second contact layer is not overlapped with the first contact layer in a vertical direction; wherein the second contact layer comprises a plurality of dots separating from each other and formed of semiconductor material.

公开(公告)号：US10199541B2

公开(公告)日：2019-02-05

申请号：US15722551

申请日：2017-10-02

Applicant: EPISTAR CORPORATION

Inventor： Kuo-Feng Huang ,  Cheng-Hsing Chiang ,  Jih-Ming Tu

IPC: H01L33/30 ,  H01L33/00 ,  H01L33/02 ,  H01L33/06 ,  H01L33/14 ,  H01L33/22 ,  H01L33/38

Abstract: A light-emitting device is provided. The light-emitting device comprises The light-emitting device comprises a light-emitting stack comprising a first semiconductor layer, a second semiconductor layer and an active layer between the first semiconductor layer and the second semiconductor layer; and a third semiconductor layer on the light-emitting stack and comprising a first sub-layer, a second sub-layer and a roughened surface, wherein the first sub-layer has the same composition as that of the second sub-layer, and the second sub-layer is farther from the light-emitting stack than the first sub-layer; wherein the first sub-layer and the second sub-layer each comprises a Group III element and a Group V element, and an atomic ratio of the Group III element to the Group V element of the first sub-layer is less than an atomic ratio of the Group III element to the Group V element of the second sub-layer.

公开(公告)号：US11588072B2

公开(公告)日：2023-02-21

申请号：US17089377

申请日：2020-11-04

Applicant: EPISTAR CORPORATION

Inventor： Yen-Chun Tseng ,  Kuo-Feng Huang ,  Shih-Chang Lee ,  Ming-Ta Chin ,  Shih-Nan Yen ,  Cheng-Hsing Chiang ,  Chia-Hung Lin ,  Cheng-Long Yeh ,  Yi-Ching Lee ,  Jui-Che Sung ,  Shih-Hao Cheng

IPC: H01L33/00 ,  H01L33/20 ,  H01L33/14 ,  H01L33/08 ,  H01L33/02

Abstract: A semiconductor device is provided, which includes a first semiconductor structure, a second semiconductor structure, and an active region. The first semiconductor structure includes a first dopant. The second semiconductor structure is located on the first semiconductor structure and includes a second dopant different from the first dopant. The active region includes a plurality of semiconductor pairs and is located between the first semiconductor structure and the second semiconductor structure. One of the plurality of semiconductor pairs has a barrier layer and a well layer and includes the first dopant. The barrier layer has a first thickness and a first Al content, and the well layer has a second thickness and a second Al content, the second thickness is less than the first thickness, and the second Al content is less than the first Al content.

公开(公告)号：US10032954B2

公开(公告)日：2018-07-24

申请号：US15591544

申请日：2017-05-10

Applicant: EPISTAR CORPORATION

Inventor： Cheng-Feng Yu ,  Ching-Yuan Tsai ,  Yao-Ru Chang ,  Hsin-Chan Chung ,  Shih-Chang Lee ,  Wen-Luh Liao ,  Cheng-Hsing Chiang ,  Kuo-Feng Huang ,  Hsu-Hsuan Teng ,  Hung-Ta Cheng ,  Yung-Fu Chang

IPC: H01L21/00 ,  H01L27/15 ,  H01L33/06 ,  H01L33/00 ,  H01L33/30 ,  H01L33/42 ,  H01L33/46 ,  H01L33/62

Abstract: A light-emitting device is provided. The light-emitting device comprises a substrate; an insulating layer on the substrate, wherein the insulating layer comprises a first hole; a light-emitting stack on the insulating layer and comprising an active region comprising a top surface, wherein the top surface comprises a first part and a second part; and an opaque layer covering the first part of the top surface and exposing the second part of the top surface, wherein the second part is directly above the first hole.

公开(公告)号：US12051767B2

公开(公告)日：2024-07-30

申请号：US18099583

申请日：2023-01-20

Applicant: EPISTAR CORPORATION

Inventor： Yen-Chun Tseng ,  Kuo-Feng Huang ,  Shih-Chang Lee ,  Ming-Ta Chin ,  Shih-Nan Yen ,  Cheng-Hsing Chiang ,  Chia-Hung Lin ,  Cheng-Long Yeh ,  Yi-Ching Lee ,  Jui-Che Sung ,  Shih-Hao Cheng

IPC: H01L33/06 ,  H01L33/02 ,  H01L33/08 ,  H01L33/14 ,  H01L33/20

CPC classification number: H01L33/14 ,  H01L33/025 ,  H01L33/08 ,  H01L33/20

Abstract: A semiconductor device is provided, which includes a first semiconductor structure, a second semiconductor structure, and an active region. The first semiconductor structure includes a first dopant. The second semiconductor structure is located on the first semiconductor structure and includes a second dopant different from the first dopant. The active region includes a plurality of semiconductor pairs and located between the first semiconductor structure and the second semiconductor structure. Each semiconductor pair includes a barrier layer and a well layer and includes the first dopant. The active region does not include a nitrogen element. A doping concentration of the first dopant in the first semiconductor structure is higher than a doping concentration of the first dopant in the active region.