JP4509997B2 - 窒化ガリウム系発光ダイオード素子の製造方法 - Google Patents
窒化ガリウム系発光ダイオード素子の製造方法 Download PDFInfo
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- JP4509997B2 JP4509997B2 JP2006349685A JP2006349685A JP4509997B2 JP 4509997 B2 JP4509997 B2 JP 4509997B2 JP 2006349685 A JP2006349685 A JP 2006349685A JP 2006349685 A JP2006349685 A JP 2006349685A JP 4509997 B2 JP4509997 B2 JP 4509997B2
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- gallium nitride
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- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 title claims description 147
- 229910002601 GaN Inorganic materials 0.000 title claims description 145
- 238000000034 method Methods 0.000 title claims description 34
- 238000004519 manufacturing process Methods 0.000 title claims description 31
- 239000000758 substrate Substances 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 17
- 238000005530 etching Methods 0.000 claims description 11
- 238000009792 diffusion process Methods 0.000 claims description 10
- 239000004065 semiconductor Substances 0.000 claims description 7
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 3
- 238000000605 extraction Methods 0.000 description 12
- 238000001039 wet etching Methods 0.000 description 6
- 229910052594 sapphire Inorganic materials 0.000 description 5
- 239000010980 sapphire Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 229910002704 AlGaN Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000001259 photo etching Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- NCGICGYLBXGBGN-UHFFFAOYSA-N 3-morpholin-4-yl-1-oxa-3-azonia-2-azanidacyclopent-3-en-5-imine;hydrochloride Chemical compound Cl.[N-]1OC(=N)C=[N+]1N1CCOCC1 NCGICGYLBXGBGN-UHFFFAOYSA-N 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000001017 electron-beam sputter deposition Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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Classifications
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- 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
- H01L33/20—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 particular shape, e.g. curved or truncated substrate
- H01L33/22—Roughened surfaces, e.g. at the interface between epitaxial layers
-
- 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
- H01L33/44—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 coatings, e.g. passivation layer or anti-reflective coating
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Led Devices (AREA)
Description
まず、図8を参考にして、発明の第1の実施形態に係る窒化ガリウム系LED素子について詳細に説明する。図8は、本発明によって製造された表面凹凸が適用された水平構造窒化ガリウム系LED素子の構造を示した断面図である。
図9を参考にして、本発明の第2の実施形態に係る窒化ガリウム系LED素子について詳細に説明する。図9は、本発明によって製造された表面凹凸が適用された垂直構造窒化ガリウム系LED素子の構造を示した断面図である。
110 凹凸形成層
110a 表面凹凸
120 感光膜パターン
210 基板
220 バッファ層
230 n型窒化ガリウム層
240 活性層
250 p型窒化ガリウム層
260 p型電極
270 n型電極
310 構造支持層
Claims (7)
- 基板上にn型窒化ガリウム層を形成するステップと、
前記n型窒化ガリウム層上に活性層を形成するステップと、
前記活性層上にp型窒化ガリウム層を形成するステップと、
前記p型窒化ガリウム層及び前記活性層の一部をメサエッチングして、前記n型窒化物半導体層の一部を露出させるステップと、
前記p型窒化ガリウム層上に凹凸形成層を形成するステップと、
前記凹凸形成層上に表面凹凸パターンを形成するための感光膜パターンを形成するステップと、
前記感光膜パターンをエッチングマスクとして、前記凹凸形成層を選択的にウェットエッチングすることにより、表面凹凸を形成するステップと、
前記表面凹凸が形成された前記p型窒化ガリウム層上にp型電極を形成するステップと、
前記露出したn型窒化ガリウム層上にn型電極を形成するステップと
を含むことを特徴とする窒化ガリウム系発光ダイオード素子の製造方法。 - 前記p型電極は、前記表面凹凸の形成されていないp型窒化ガリウム層上に形成することを特徴とする請求項1に記載の窒化ガリウム系発光ダイオード素子の製造方法。
- 前記p型窒化ガリウム層上に凹凸形成層を形成するステップの前に、
前記p型窒化ガリウム層上に電流拡散層を形成するステップをさらに含むことを特徴とする請求項1又は2に記載の窒化ガリウム系発光ダイオード素子の製造方法。 - 基板上にn型窒化ガリウム層、活性層、p型窒化ガリウム層を順次形成して、窒化ガリウム系半導体発光構造物を形成するステップと、
前記窒化ガリウム系LED構造物上にp型電極を形成するステップと、
前記p型電極上に導電性基板を接合するステップと、
前記基板をLLO工程により除去して、n型窒化ガリウム層を露出させるステップと、
前記基板が除去されて露出した前記n型窒化ガリウム層上に凹凸形成層を形成するステップと、
前記凹凸形成層上に表面凹凸パターンを形成するための感光膜パターンを形成するステップと、
前記感光膜パターンをエッチングマスクとして、前記凹凸形成層を選択的にウェットエッチングすることにより、表面凹凸を形成するステップと、
前記表面凹凸の形成された前記n型窒化ガリウム層上にn型電極を形成するステップと
を含むことを特徴とする窒化ガリウム系発光ダイオード素子の製造方法。 - 前記n型電極は、前記表面凹凸の形成されていないn型窒化ガリウム層上に形成することを特徴とする請求項4に記載の窒化ガリウム系発光ダイオード素子の製造方法。
- 前記n型窒化ガリウム層上に凹凸形成層を形成するステップの前に、
前記n型窒化ガリウム層上に電流拡散層を形成するステップをさらに含むことを特徴とする請求項4又は5に記載の窒化ガリウム系発光ダイオード素子の製造方法。 - 前記凹凸形成層は、TiO2を使用して形成することを特徴とする請求項1〜6のいずれか一項に記載の窒化ガリウム系発光ダイオード素子の製造方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020060010331A KR100735488B1 (ko) | 2006-02-03 | 2006-02-03 | 질화갈륨계 발광다이오드 소자의 제조방법 |
Publications (2)
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JP2007208244A JP2007208244A (ja) | 2007-08-16 |
JP4509997B2 true JP4509997B2 (ja) | 2010-07-21 |
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JP2006349685A Expired - Fee Related JP4509997B2 (ja) | 2006-02-03 | 2006-12-26 | 窒化ガリウム系発光ダイオード素子の製造方法 |
Country Status (4)
Country | Link |
---|---|
US (2) | US20070184568A1 (ja) |
JP (1) | JP4509997B2 (ja) |
KR (1) | KR100735488B1 (ja) |
TW (1) | TWI347685B (ja) |
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JP5187854B2 (ja) * | 2009-08-28 | 2013-04-24 | シャープ株式会社 | 窒化物半導体発光素子 |
CN101964386A (zh) * | 2010-10-25 | 2011-02-02 | 厦门市三安光电科技有限公司 | 一种粗化表面发光二极管制作方法 |
TWI470829B (zh) * | 2011-04-27 | 2015-01-21 | Sino American Silicon Prod Inc | 磊晶基板的製作方法、發光二極體,及其製作方法 |
KR20140022235A (ko) * | 2012-08-13 | 2014-02-24 | 삼성전자주식회사 | 반도체 발광소자 제조방법 |
JP6198416B2 (ja) * | 2013-03-08 | 2017-09-20 | スタンレー電気株式会社 | 半導体発光素子及びその製造方法 |
CN104600168B (zh) * | 2014-12-31 | 2017-05-10 | 山东浪潮华光光电子股份有限公司 | GaAs基发光二极管芯片上GaP粗糙表面的制备方法 |
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2006
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- 2006-12-26 JP JP2006349685A patent/JP4509997B2/ja not_active Expired - Fee Related
- 2006-12-28 US US11/646,406 patent/US20070184568A1/en not_active Abandoned
-
2009
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Also Published As
Publication number | Publication date |
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TWI347685B (en) | 2011-08-21 |
US20070184568A1 (en) | 2007-08-09 |
JP2007208244A (ja) | 2007-08-16 |
US20090258454A1 (en) | 2009-10-15 |
TW200731583A (en) | 2007-08-16 |
KR100735488B1 (ko) | 2007-07-04 |
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