公开(公告)号：US20210210659A1

公开(公告)日：2021-07-08

申请号：US17206647

申请日：2021-03-19

Applicant: EPISTAR CORPORATION

Inventor： Chao-Hsing CHEN ,  Jia-Kuen WANG ,  Tzu-Yao TSENG ,  Bo-Jiun HU ,  Tsung-Hsun CHIANG ,  Wen-Hung CHUANG ,  Kuan-Yi LEE ,  Yu-Ling LIN ,  Chien-Fu SHEN ,  Tsun-Kai KO

IPC: H01L33/46 ,  H01L33/38

Abstract: A light-emitting device includes a semiconductor stack including a first semiconductor layer, a second semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer; one or multiple vias penetrating the active layer and the second semiconductor layer to expose the first semiconductor layer; a first contact layer covering the one or multiple vias; a third insulating layer including a first group of one or multiple third insulating openings on the second semiconductor layer to expose the first contact layer; a first pad on the semiconductor stack and covering the first group of one or multiple third insulating openings; and a second pad on the semiconductor stack and separated from the first pad with a distance, wherein the second pad is formed at a position other than positions of the one or multiple vias in a top view of the light-emitting device.

公开(公告)号：US11054088B2

公开(公告)日：2021-07-06

申请号：US16258281

申请日：2019-01-25

Applicant: EPISTAR CORPORATION

Inventor： Chiu-Lin Yao ,  Min-Hsun Hsieh ,  Been-Yu Liaw ,  Wei-Chiang Hu ,  Po-Hung Lai ,  Chun-Hung Liu ,  Shih-An Liao ,  Yu-His Sung ,  Ming-Chi Hsu

IPC: F21K9/00 ,  F21K9/235 ,  H01L25/075 ,  F21K9/232 ,  H01L33/54 ,  H01L33/62 ,  F21Y115/10 ,  F21Y107/10 ,  F21Y107/30

Abstract: This disclosure discloses a light-emitting bulb. The light-emitting bulb includes a cover, an electrical associated with the cover, a board arranged between the cover and the electrical connector, and a first light-emitting device disposed on the board. The first light-emitting device includes a carrier having a first side and a second side, a first electrode part disposed near the first side and extending to the second side, a bended part disposed near to the second side and spaced apart from the first electrode part, and a second electrode part extending from the bended part to the first side. No light-emitting diode unit is arranged on the second electrode part.

公开(公告)号：US20210202571A1

公开(公告)日：2021-07-01

申请号：US17138335

申请日：2020-12-30

Applicant: EPISTAR CORPORATION

Inventor： Chao-Hsing CHEN ,  Chi-Shiang HSU ,  Yong-Yang CHEN

IPC: H01L27/15

Abstract: A light-emitting device comprises a substrate comprising a top surface; a plurality of light-emitting units formed on the top surface of the substrate comprising a first light-emitting unit, a second light-emitting unit, and one or a plurality of third light-emitting units, wherein each of the plurality of light-emitting units comprises a first semiconductor layer, an active layer and a second semiconductor layer; an insulating layer comprising a first insulating layer opening and a second insulating layer opening formed on each of the plurality of light-emitting units; a first extension electrode covering the first light-emitting unit, wherein the first extension electrode covers the first insulating layer opening on the first light-emitting unit without covering the second insulating layer opening on the first light-emitting unit; a second extension electrode covering the second light-emitting unit, wherein the second extension electrode covers the second insulating layer opening on the second light-emitting unit without covering the first insulating layer opening on the second light-emitting unit; a first electrode pad covering a part of the plurality of the light-emitting units; and a second electrode pad covering another part of the plurality of light-emitting units.

公开(公告)号：US20210183942A1

公开(公告)日：2021-06-17

申请号：US17170407

申请日：2021-02-08

Applicant: EPISTAR CORPORATION

Inventor： Chien-Fu SHEN ,  Chao-Hsing CHEN ,  Tsun-Kai KO ,  Schang-Jing HON ,  Sheng-Jie HSU ,  De-Shan KUO ,  Hsin-Ying WANG ,  Chiu-Lin YAO ,  Chien-Fu HUANG ,  Hsin-Mao LIU ,  Chien-Kai CHUNG

IPC: H01L27/15 ,  H01L25/075 ,  H01L33/20 ,  H01L33/62 ,  H01L33/38 ,  H01L33/44

Abstract: A light-emitting device, includes a substrate with a top surface; a first light-emitting structure unit and a second light-emitting structure unit separately formed on the top surface and adjacent to each other, and wherein the first light-emitting structure unit includes a first sidewall and a second sidewall; a trench between the first and the second light-emitting structure units; and an electrical connection arranged on the first sidewall and the second light-emitting structure unit, and electrically connecting the first light-emitting structure unit and the second light-emitting structure unit; wherein the first sidewall connects to the top surface; wherein the first sidewall faces the second light-emitting structure units, and the second sidewall is not between the first light-emitting structure unit and the second light-emitting structure unit; and wherein the second sidewall is steeper than the first sidewall.

公开(公告)号：US11019726B2

公开(公告)日：2021-05-25

申请号：US16451832

申请日：2019-06-25

Applicant: EPISTAR CORPORATION

Inventor： Min-Hsun Hsieh

IPC: H05K1/00 ,  H05K1/18 ,  H01L33/62 ,  A61N5/06

Abstract: A light-emitting device comprises a flexible carrier having a plurality of segmentations, a light-emitting unit and a connecting wire. The flexible carrier has a carrier part and an extendable part. The light-emitting unit is set on the carrier part. The extendable part has a plurality of segmentations. The flexible carrier has a continuous common surface.

公开(公告)号：US10978615B2

公开(公告)日：2021-04-13

申请号：US16828462

申请日：2020-03-24

Applicant: EPISTAR CORPORATION

Inventor： Min-Hsun Hsieh ,  Tzer-Perng Chen ,  Jen-Chau Wu ,  Yuh-Ren Shieh ,  Chuan-Cheng Tu

IPC: H01L33/22 ,  H01L23/00 ,  H01L33/00 ,  H01L33/50 ,  H01L33/38 ,  H01L27/15

Abstract: The present disclosure provides a light-emitting apparatus comprising a board having a plurality of first metal contacts and a plurality of second metal contacts on a top surface; a plurality of LEDs being bonded to the board, the each of the LEDs comprising a first cladding layer on the substrate, an active layer on the first cladding layer, a second cladding layer on the active layer, an upper surface on the second cladding layer, a first metal layer, and a second metal layer, wherein the first metal layer and the second metal layer are between the active layer and the board; an opaque layer between the adjacent LEDs and comprising a polymer mixed with a plurality of inorganic particles; and an encapsulating layer on the upper surfaces and opposite to the board, wherein the encapsulating layer does not cover a side wall of the active layer; and an underfill material between the board and the plurality of LEDs, wherein the underfill material surrounds each of the first metal layer and the second metal layer.

公开(公告)号：US10971652B2

公开(公告)日：2021-04-06

申请号：US16513264

申请日：2019-07-16

Applicant: EPISTAR CORPORATION

Inventor： Chia-Ming Liu ,  Chang-Hua Hsieh ,  Yung-Chung Pan ,  Chang-Yu Tsai ,  Ching-Chung Hu ,  Ming-Pao Chen ,  Chi Shen ,  Wei-Chieh Lien

IPC: H01L33/26 ,  H01L33/14 ,  H01L33/06 ,  H01L33/04 ,  H01L33/30 ,  H01L33/32 ,  H01L33/20

Abstract: A semiconductor device comprises: a first semiconductor structure; a second semiconductor structure on the first semiconductor structure; an active region, wherein the active region comprises multiple alternating well layers and barrier layers, the active region further comprises an upper surface facing the second semiconductor structure and a bottom surface opposite the upper surface; an electron blocking region between the second semiconductor structure and the active region; a first aluminum-containing layer between the electron blocking region and the active region, wherein the first aluminum-containing layer has a band gap greater than the band gap of the first electron blocking layer; and a p-type dopant above the bottom surface of the active region and comprising a concentration profile comprising a peak shape having a peak concentration value, wherein the peak concentration value lies at a distance of between 15 nm and 60 nm from the upper surface of the active region.

公开(公告)号：US20210074886A1

公开(公告)日：2021-03-11

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: H01L33/38 ,  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：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.

公开(公告)号：US10930701B2

公开(公告)日：2021-02-23

申请号：US16390899

申请日：2019-04-22

Applicant: Epistar Corporation

Inventor： Chen Ou ,  Chun-Wei Chang ,  Chih-Wei Wu ,  Sheng-Chih Wang ,  Hsin-Mei Tsai ,  Chia-Chen Tsai ,  Chuan-Cheng Chang

IPC: H01L27/15 ,  H01L33/38 ,  H01L33/20 ,  H01L33/08

Abstract: A light-emitting device includes a first semiconductor layer having an uppermost surface and a bottommost surface; a first light-emitting structure and a second light-emitting structure formed on the same first semiconductor layer, wherein the first semiconductor layer is continuous; a first trench formed between the first and the second light-emitting structures; and a second electrode formed on the second semiconductor layer and including a second pad and a plurality of second extending parts extending from the second pad; wherein the second pad is between the first and the second light-emitting structures, and the plurality of second extending parts extends to the first and the second light-emitting structures, respectively; wherein the first trench passes through the uppermost surface but does not extend to the bottommost surface; wherein the first trench includes an equal width in a top view.