KR101552671B1 - 고휘도 질화물 발광소자 제조 방법 - Google Patents
고휘도 질화물 발광소자 제조 방법 Download PDFInfo
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Abstract
본 발명의 일 실시예에 따른 질화물 발광소자의 제조 방법은 실리콘 기판 상에 20~300㎛의 폭을 가지는 마스크 패턴을 형성하는 단계; 상기 마스크 패턴 사이로 노출된 실리콘 기판 상에 질화물을 수평 성장시켜 제1 질화물 반도체층, 활성층 및 제2 질화물 반도체층을 포함하는 발광구조체를 형성하는 단계; 상기 마스크 패턴 사이 발광구조체 영역에 적어도 상기 제2 질화물 반도체층 및 상기 활성층을 식각하여 트렌치(trench)를 형성하는 단계; 상기 트렌치가 형성된 발광구조체 표면에 접합 기판을 부착하는 단계; 및 상기 실리콘 기판 및 마스크 패턴을 제거하는 단계;를 포함하는 것을 특징으로 한다.
Description
도 2 내지 도 7은 본 발명의 일 실시예에 따른 질화물 발광소자의 제조 방법을 설명하기 위한 공정사시도들이다.
도 8은 본 발명에 사용되는 마스크 패턴의 다른 실시예를 도시한 사시도이다.
도 9는 도 8의 마스크 패턴을 사용할 때의 발광구조체에 형성된 트렌치를 도시한 사시도이다.
도 10 및 도 11은 접합 기판 부착 전, 도 4의 트렌치를 포함한 발광구조체 상에 절연막의 증착 및 식각 과정을 도시한 공정사시도들이다.
도 12는 도 11에 형성된 절연막 패턴의 다른 실시예를 도시한 사시도이다.
도 13 및 도 14는 접합 기판 부착 전, 도 9의 트렌치를 포함한 발광구조체 상에 절연막의 증착 및 식각 과정을 도시한 공정사시도들이다.
도 15는 도 14에 형성된 절연막 패턴의 다른 실시예를 도시한 사시도이다.
도 16은 본 발명의 일 실시예에 따른 질화물 발광소자를 다이싱한 예를 나타낸 것이다.
115 : 마스크 패턴 115a : 제2 마스크 패턴
116 : 마스크윈도우 116a : 제2 마스크윈도우
120 : 발광구조체 122 : 제1 질화물 반도체층
124 : 활성층 126 : 제2 질화물 반도체층
130 : 접합 기판 140 : 투명 도전성 패턴
150 : n측 본딩 패드 170 : 절연막
170a : 절연막 패턴 T : 트렌치
T2 : 제2 트렌치
Claims (26)
- 실리콘 기판 상에 20~300㎛의 폭을 가지는 마스크 패턴을 5~40㎛ 간격으로 형성하는 단계;
상기 마스크 패턴 사이로 노출된 실리콘 기판 상에 질화물을 수평 성장시켜 제1 질화물 반도체층, 활성층 및 제2 질화물 반도체층을 포함하는 발광구조체를 형성하는 단계;
상기 마스크 패턴 사이 발광구조체 영역에 적어도 상기 제2 질화물 반도체층 및 상기 활성층을 식각하여 트렌치(trench)를 형성하는 단계;
상기 트렌치의 표면에 절연막 패턴을 형성하는 단계;
상기 트렌치 및 상기 트렌치 표면에 절연막 패턴이 형성된 발광구조체 표면에 접합 기판을 부착하는 단계; 및
상기 실리콘 기판 및 마스크 패턴을 제거하는 단계;를 포함하는 것을 특징으로 하는 질화물 발광소자의 제조 방법.
- 삭제
- 제1항에 있어서,
상기 마스크 패턴은
실리콘 산화막(SiO2)으로 형성되는 것을 특징으로 하는 질화물 발광소자의 제조 방법.
- 제1항에 있어서,
상기 마스크 패턴은
스트라이프 패턴으로 형성되는 것을 특징으로 하는 질화물 발광소자의 제조 방법.
- 제1항에 있어서,
상기 마스크 패턴은
블럭 패턴으로 형성되는 것을 특징으로 하는 질화물 발광소자의 제조 방법.
- 제1항에 있어서,
상기 식각은
메사 식각(mesa etching)으로 수행되는 것을 특징으로 하는 질화물 발광소자의 제조 방법.
- 제1항에 있어서,
상기 식각 단계에서,
적어도 제1질화물 반도체층의 일부분까지 식각되는 것을 특징으로 하는 질화물 발광소자의 제조 방법.
- 제1항에 있어서,
상기 접합 기판은
실리콘 기판 또는 금속 기판인 것을 특징으로 하는 질화물 발광소자의 제조 방법.
- 제8항에 있어서,
상기 접합 기판은
p측 전극으로 작용하는 것을 특징으로 하는 질화물 발광소자의 제조 방법.
- 제1항에 있어서,
상기 질화물 발광소자의 제조 방법은
상기 실리콘 기판 및 마스크 패턴을 제거하는 단계 이후에,
n측 본딩패드를 형성하는 단계를 더 포함하는 것을 특징으로 하는 질화물 발광소자의 제조 방법.
- 제10항에 있어서,
상기 질화물 발광소자의 제조 방법은
상기 n측 본딩패드을 형성하는 단계 이전에,
상기 발광구조체의 제1 질화물 반도체층 상에 투명 전도성 패턴을 형성하는 단계를 더 포함하는 것을 특징으로 하는 질화물 발광소자의 제조 방법.
- 삭제
- 제1항에 있어서,
상기 트렌치의 표면에 절연막 패턴을 형성하는 단계는
상기 절연막 패턴을 상기 발광구조체 표면의 가장자리까지 더 형성하는 것을 특징으로 하는 질화물 발광소자의 제조 방법.
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020120102459A KR101552671B1 (ko) | 2012-09-14 | 2012-09-14 | 고휘도 질화물 발광소자 제조 방법 |
TW102133234A TW201419580A (zh) | 2012-09-14 | 2013-09-13 | 具有高亮度的氮化物發光裝置及其製造方法 |
PCT/KR2013/008304 WO2014042461A1 (ko) | 2012-09-14 | 2013-09-13 | 고휘도 질화물 발광소자 및 그 제조 방법 |
US14/428,124 US20150228847A1 (en) | 2012-09-14 | 2013-09-13 | High-luminance nitride light-emitting device and method for manufacturing same |
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KR1020120102459A KR101552671B1 (ko) | 2012-09-14 | 2012-09-14 | 고휘도 질화물 발광소자 제조 방법 |
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KR101552671B1 true KR101552671B1 (ko) | 2015-09-11 |
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JP3841537B2 (ja) * | 1997-12-22 | 2006-11-01 | 豊田合成株式会社 | 窒化ガリウム系化合物半導体及びその製造方法 |
US6177359B1 (en) * | 1999-06-07 | 2001-01-23 | Agilent Technologies, Inc. | Method for detaching an epitaxial layer from one substrate and transferring it to another substrate |
JP3863720B2 (ja) * | 2000-10-04 | 2006-12-27 | 三洋電機株式会社 | 窒化物系半導体素子および窒化物系半導体の形成方法 |
JP4766845B2 (ja) * | 2003-07-25 | 2011-09-07 | シャープ株式会社 | 窒化物系化合物半導体発光素子およびその製造方法 |
JP4277116B2 (ja) * | 2006-09-20 | 2009-06-10 | 国立大学法人東北大学 | 半導体デバイスの製造方法 |
KR100867541B1 (ko) * | 2006-11-14 | 2008-11-06 | 삼성전기주식회사 | 수직형 발광 소자의 제조 방법 |
KR101425167B1 (ko) * | 2008-01-07 | 2014-07-31 | 삼성전자주식회사 | 질화물 반도체 발광소자 제조방법 및 이에 의해 제조된질화물 반도체 발광소자 |
KR20100057372A (ko) * | 2008-11-21 | 2010-05-31 | 우리엘에스티 주식회사 | 수직형 질화물계 발광소자의 제조방법 |
KR20100061130A (ko) * | 2008-11-28 | 2010-06-07 | 삼성엘이디 주식회사 | 질화물계 반도체 발광소자의 제조방법 |
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2012
- 2012-09-14 KR KR1020120102459A patent/KR101552671B1/ko active Active
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2013
- 2013-09-13 US US14/428,124 patent/US20150228847A1/en not_active Abandoned
- 2013-09-13 TW TW102133234A patent/TW201419580A/zh unknown
- 2013-09-13 WO PCT/KR2013/008304 patent/WO2014042461A1/ko active Application Filing
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JP2007299935A (ja) * | 2006-04-28 | 2007-11-15 | Showa Denko Kk | 窒化物系半導体発光素子の製造方法、窒化物系半導体発光素子及びランプ |
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US20150228847A1 (en) | 2015-08-13 |
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