CN104157753A - 发光器件 - Google Patents
发光器件 Download PDFInfo
- Publication number
- CN104157753A CN104157753A CN201410203297.1A CN201410203297A CN104157753A CN 104157753 A CN104157753 A CN 104157753A CN 201410203297 A CN201410203297 A CN 201410203297A CN 104157753 A CN104157753 A CN 104157753A
- Authority
- CN
- China
- Prior art keywords
- semiconductor layer
- nitride semiconductor
- nanostructure
- key
- course
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004065 semiconductor Substances 0.000 claims abstract description 387
- 150000004767 nitrides Chemical class 0.000 claims abstract description 186
- 239000000758 substrate Substances 0.000 claims abstract description 90
- 239000002086 nanomaterial Substances 0.000 claims abstract description 71
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052733 gallium Inorganic materials 0.000 claims abstract 2
- 239000002019 doping agent Substances 0.000 claims description 31
- 239000011248 coating agent Substances 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 17
- 229910002704 AlGaN Inorganic materials 0.000 claims description 13
- -1 InGaN Inorganic materials 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims 2
- 239000004411 aluminium Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 16
- 230000006835 compression Effects 0.000 description 14
- 238000007906 compression Methods 0.000 description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 7
- 208000037656 Respiratory Sounds Diseases 0.000 description 7
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 229910052732 germanium Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910052711 selenium Inorganic materials 0.000 description 3
- 229910052714 tellurium Inorganic materials 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000026267 regulation of growth Effects 0.000 description 2
- XCZXGTMEAKBVPV-UHFFFAOYSA-N trimethylgallium Chemical compound C[Ga](C)C XCZXGTMEAKBVPV-UHFFFAOYSA-N 0.000 description 2
- IBEFSUTVZWZJEL-UHFFFAOYSA-N trimethylindium Chemical compound C[In](C)C IBEFSUTVZWZJEL-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XMYUJZDBTIYSAG-UHFFFAOYSA-N [Mg].C(C)C1=CC=CC1 Chemical compound [Mg].C(C)C1=CC=CC1 XMYUJZDBTIYSAG-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/26—Materials of the light emitting region
- H01L33/30—Materials of the light emitting region containing only elements of Group III and Group V of the Periodic Table
- H01L33/32—Materials of the light emitting region containing only elements of Group III and Group V of the Periodic Table containing nitrogen
- H01L33/325—Materials of the light emitting region containing only elements of Group III and Group V of the Periodic Table containing nitrogen characterised by the doping materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
- H01L21/0237—Materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
- H01L21/02439—Materials
- H01L21/02455—Group 13/15 materials
- H01L21/02458—Nitrides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
- H01L21/02439—Materials
- H01L21/02488—Insulating materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
- H01L21/02494—Structure
- H01L21/02496—Layer structure
- H01L21/02505—Layer structure consisting of more than two layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
- H01L21/02494—Structure
- H01L21/02513—Microstructure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02538—Group 13/15 materials
- H01L21/0254—Nitrides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/0257—Doping during depositing
- H01L21/02573—Conductivity type
- H01L21/02576—N-type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/0262—Reduction or decomposition of gaseous compounds, e.g. CVD
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/20—Deposition of semiconductor materials on a substrate, e.g. epitaxial growth solid phase epitaxy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/025—Physical imperfections, e.g. particular concentration or distribution of impurities
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/12—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a stress relaxation structure, e.g. buffer layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/005—Processes
- H01L33/0062—Processes for devices with an active region comprising only III-V compounds
- H01L33/0066—Processes for devices with an active region comprising only III-V compounds with a substrate not being a III-V compound
- H01L33/007—Processes for devices with an active region comprising only III-V compounds with a substrate not being a III-V compound comprising nitride compounds
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Led Devices (AREA)
Abstract
Description
Claims (26)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130054094A KR102109048B1 (ko) | 2013-05-14 | 2013-05-14 | 반도체 기판, 발광 소자 및 전자 소자 |
KR10-2013-0054094 | 2013-05-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104157753A true CN104157753A (zh) | 2014-11-19 |
CN104157753B CN104157753B (zh) | 2018-09-07 |
Family
ID=50630701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410203297.1A Active CN104157753B (zh) | 2013-05-14 | 2014-05-14 | 发光器件 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9553236B2 (zh) |
EP (1) | EP2804226B1 (zh) |
KR (1) | KR102109048B1 (zh) |
CN (1) | CN104157753B (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109417020A (zh) * | 2016-04-12 | 2019-03-01 | 璐米斯塔尔有限公司 | 包括半绝缘氮化物半导体层的氮化物半导体基板的制造方法及利用该方法制造的氮化物半导体基板 |
CN113140447A (zh) * | 2021-04-21 | 2021-07-20 | 西安电子科技大学 | 基于TiN掩膜的GaN材料及其制备方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102122846B1 (ko) * | 2013-09-27 | 2020-06-15 | 서울바이오시스 주식회사 | 질화물 반도체 성장 방법, 이를 이용한 반도체 제조용 템플릿 제조 방법 및 반도체 발광 소자 제조 방법 |
CN104701431B (zh) * | 2014-11-27 | 2017-03-29 | 厦门市三安光电科技有限公司 | 一种发光二极管的外延结构及其制作方法 |
JP6642805B2 (ja) | 2016-12-28 | 2020-02-12 | 豊田合成株式会社 | 半導体構造体の製造方法および半導体素子の製造方法 |
US10017384B1 (en) | 2017-01-06 | 2018-07-10 | Nanoclear Technologies Inc. | Property control of multifunctional surfaces |
US10121919B2 (en) | 2017-01-06 | 2018-11-06 | Nanoclear Technologies Inc. | Control of surface properties by deposition of particle monolayers |
JP6712405B2 (ja) * | 2017-03-29 | 2020-06-24 | 豊田合成株式会社 | 半導体素子の製造方法 |
WO2020123451A1 (en) * | 2018-12-10 | 2020-06-18 | Nanoclear Technologies, Inc. | Enhancement of photon extraction with nanoparticles on semiconducting nanostructures |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100320506A1 (en) * | 2007-11-27 | 2010-12-23 | Nanocrystal Corporation | Ultra-Low Dislocation Density Group III - Nitride Semiconductor Substrates Grown Via Nano- Or Micro-Particle Film |
CN102157648A (zh) * | 2010-02-12 | 2011-08-17 | 株式会社东芝 | 半导体发光器件 |
CN102244162A (zh) * | 2011-07-14 | 2011-11-16 | 北京燕园中镓半导体工程研发中心有限公司 | 一种发光二极管的制备方法 |
EP2398076A2 (en) * | 2010-06-21 | 2011-12-21 | LG Innotek Co., Ltd. | Light emitting device, method for fabricating the same, light emitting device package, and lighting system including the same |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101220042B1 (ko) * | 2006-02-20 | 2013-01-18 | 엘지이노텍 주식회사 | 질화물 반도체 발광소자 및 그 제조 방법 |
KR101146819B1 (ko) * | 2008-09-23 | 2012-05-21 | 일진머티리얼즈 주식회사 | 단결정 기판의 제조방법, 이에 의해 제조된 단결정 기판, 상기 단결정 기판을 포함하는 발광소자, 및 이의 제조방법 |
KR100994643B1 (ko) * | 2009-01-21 | 2010-11-15 | 주식회사 실트론 | 구형 볼을 이용한 화합물 반도체 기판의 제조 방법과 이를 이용한 화합물 반도체 기판 및 화합물 반도체 소자 |
KR101083496B1 (ko) * | 2010-02-23 | 2011-11-16 | 주식회사 엘지실트론 | 질화갈륨 기판 제조방법 |
JP2011216549A (ja) * | 2010-03-31 | 2011-10-27 | Jx Nippon Mining & Metals Corp | GaN系半導体エピタキシャル基板の製造方法 |
US8723159B2 (en) * | 2011-02-15 | 2014-05-13 | Invenlux Corporation | Defect-controlling structure for epitaxial growth, light emitting device containing defect-controlling structure, and method of forming the same |
CN103890973B (zh) * | 2011-10-31 | 2016-07-20 | 京瓷株式会社 | 利用了受光发光一体型元件的受光发光装置及传感器装置 |
-
2013
- 2013-05-14 KR KR1020130054094A patent/KR102109048B1/ko active IP Right Grant
-
2014
- 2014-05-06 EP EP14167223.8A patent/EP2804226B1/en active Active
- 2014-05-09 US US14/273,927 patent/US9553236B2/en active Active
- 2014-05-14 CN CN201410203297.1A patent/CN104157753B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100320506A1 (en) * | 2007-11-27 | 2010-12-23 | Nanocrystal Corporation | Ultra-Low Dislocation Density Group III - Nitride Semiconductor Substrates Grown Via Nano- Or Micro-Particle Film |
CN102157648A (zh) * | 2010-02-12 | 2011-08-17 | 株式会社东芝 | 半导体发光器件 |
EP2398076A2 (en) * | 2010-06-21 | 2011-12-21 | LG Innotek Co., Ltd. | Light emitting device, method for fabricating the same, light emitting device package, and lighting system including the same |
CN102244162A (zh) * | 2011-07-14 | 2011-11-16 | 北京燕园中镓半导体工程研发中心有限公司 | 一种发光二极管的制备方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109417020A (zh) * | 2016-04-12 | 2019-03-01 | 璐米斯塔尔有限公司 | 包括半绝缘氮化物半导体层的氮化物半导体基板的制造方法及利用该方法制造的氮化物半导体基板 |
CN113140447A (zh) * | 2021-04-21 | 2021-07-20 | 西安电子科技大学 | 基于TiN掩膜的GaN材料及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
KR20140134375A (ko) | 2014-11-24 |
EP2804226B1 (en) | 2016-03-16 |
EP2804226A1 (en) | 2014-11-19 |
US9553236B2 (en) | 2017-01-24 |
CN104157753B (zh) | 2018-09-07 |
US20140339565A1 (en) | 2014-11-20 |
KR102109048B1 (ko) | 2020-05-11 |
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