KR20100085193A - 반도체 발광 소자 및 그 제조방법 - Google Patents
반도체 발광 소자 및 그 제조방법 Download PDFInfo
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Abstract
Description
도 2는, 도 1에 도시한 n측 전극의 일례를 도시한 평면도이다.
도 3은, 도 1에 도시한 제1 볼록 영역 및 제2 볼록 영역을 모식적으로 도시한 사시도이다.
도 4는, 도 3에 도시한 A-A단면에서 본 도면이다.
도 5는, 도 1에 도시한 반도체 발광 소자의 제조 공정을 모식적으로 도시한 단면도(그 1)이다.
도 6은, 도 1에 도시한 반도체 발광 소자의 제조 공정을 모식적으로 도시한 단면도(그 2)이다.
도 7은, 도 1에 도시한 반도체 발광 소자의 제조 공정을 모식적으로 도시한 단면도(그 3)이다.
도 8은, 본 발명의 실시형태에 관한 반도체 발광 소자의 지향성의 일례를 도시한 그래프이다.
도 9는, 본 발명의 실시형태에 관한 반도체 발광 소자의 변형예로서 제1 볼록 영역을 모식적으로 일부 단면에서 도시한 도면이다.
도 10은, 본 발명의 실시형태에 관한 반도체 발광 소자의 구성 변형예를 모식적으로 도시한 단면도이다.
도 11은, 본 발명의 실시형태에 관한 반도체 발광 소자의 구성 변형예를 모식적으로 도시한 단면도이다.
도 12는, 종래의 반도체 발광 소자의 구성을 모식적으로 도시한 단면도이다.
도 13은, 종래의 반도체 발광 소자의 구성을 모식적으로 도시한 단면도이다.
Claims (12)
- n형 반도체층과 p형 반도체층 사이에 발광층을 가진 반도체 적층체와, 상기 반도체 적층체가 실장되는 기판과, 상기 반도체 적층체가 상기 기판에 실장되는 면과는 반대쪽의 광취출면 위에 설치된 전극을 가지고, 상기 광취출면에 여러 개의 볼록부를 구비한 반도체 발광 소자에서,
상기 여러 개의 볼록부는 제1 볼록 영역과 제2 볼록 영역에 마련되어 있으며,
상기 제2 볼록 영역은, 상기 제1 볼록 영역과 상기 전극 사이에서 상기 전극과 상기 반도체 적층체와의 계면과 인접한 영역이며,
상기 제1 볼록 영역에 설치된 제1 볼록부의 기단은 상기 계면보다도 상기 발광층쪽에 위치하고,
상기 제2 볼록 영역에 설치된 제2 볼록부의 기단은 상기 제1 볼록부의 기단보다도 상기 계면쪽에 위치하는 것을 특징으로 하는 반도체 발광 소자. - 제1항에 있어서,
상기 제1 볼록부의 기단에서 끝단까지의 높이는, 상기 제2 볼록부의 기단에서 끝단까지의 높이보다도 큰 것을 특징으로 하는 반도체 발광 소자. - 제1항 또는 제2항에 있어서,
상기 제1 볼록부 및 상기 제2 볼록부는 끝단이 가늘어지는 형상인 것을 특징으로 하는 반도체 발광 소자. - 제1항 내지 제3항 중 어느 한 항에 있어서,
적어도 상기 제2 볼록 영역은 상기 전극을 둘러싸고 설치되어 있는 것을 특징으로 하는 반도체 발광 소자. - 제4항에 있어서,
상기 제1 볼록 영역은 상기 제2 볼록 영역 및 상기 전극을 둘러싸고 마련되어 있는 것을 특징으로 하는 반도체 발광 소자. - 제1항 내지 제5항 중 어느 한 항에 있어서,
상기 광취출면에는 상기 전극이 이격되어 설치되고, 상기 이격되어 설치된 전극에 끼워지는 영역에 상기 제1 볼록 영역 및 상기 제2 볼록 영역을 갖는 것을 특징으로 하는 반도체 발광 소자. - 제1항 내지 제6항 중 어느 한 항에 있어서,
상기 제1 볼록부 및 상기 제2 볼록부는 끝단이 평탄하지 않은 형상으로 형성되어 있는 것을 특징으로 하는 반도체 발광 소자. - 제1항 내지 제7항 중 어느 한 항에 있어서,
상기 제1 볼록부 및 상기 제2 볼록부는 기단이 이웃한 볼록부의 기단과 인접하도록 마련되어 있는 것을 특징으로 하는 반도체 발광 소자. - 제1항 내지 제8항 중 어느 한 항에 있어서,
상기 제1 볼록 영역에서 상기 제1 볼록부를, 상기 전극에서 멀어질수록 기단이 상기 발광층에 근접하도록 형성한 것을 특징으로 하는 반도체 발광 소자. - 제1항 내지 제9항 중 어느 한 항에 있어서,
상기 전극과 상기 반도체 적층체와의 계면에 제3 볼록부를 더 갖는 것을 특징으로 하는 반도체 발광 소자. - n형 반도체층과 p형 반도체층 사이에 발광층을 가진 반도체 적층체를 형성하는 공정,
상기 반도체 적층체의 기판에 실장되는 쪽과는 반대쪽의 광취출면을 형성하는 한쪽의 반도체층 표면의 전극 형성 예정 영역을 둘러싸도록 개구를 가진 레지스터를, 상기 개구가 상기 레지스터의 적층 방향을 향해 폐색되도록 형성하는 공정,
상기 레지스터 위에서 상기 반도체층 표면에 마스크 재료를 적층하는 공정,
상기 마스크 재료가 적층된 레지스터를 제거하는 공정,
상기 전극 형성 예정 영역을 마스크하여 상기 반도체층 표면을 식각하는 공정,
을 갖는 것을 특징으로 하는 반도체 발광 소자의 제조방법. - 제11항에 있어서,
상기 마스크 재료는 전극 재료인 것을 특징으로 하는 반도체 발광 소자의 제조방법.
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JP5310564B2 (ja) | 2013-10-09 |
JPWO2009084670A1 (ja) | 2011-05-19 |
JP5545398B2 (ja) | 2014-07-09 |
US20140370630A1 (en) | 2014-12-18 |
WO2009084670A1 (ja) | 2009-07-09 |
US8552445B2 (en) | 2013-10-08 |
TW200945631A (en) | 2009-11-01 |
US20100264443A1 (en) | 2010-10-21 |
EP2234182A1 (en) | 2010-09-29 |
EP2234182A4 (en) | 2014-09-03 |
JP2013211595A (ja) | 2013-10-10 |
RU2436195C1 (ru) | 2011-12-10 |
US8883529B2 (en) | 2014-11-11 |
CN101911317B (zh) | 2012-06-06 |
EP2234182B1 (en) | 2016-11-09 |
CN101911317A (zh) | 2010-12-08 |
KR101164663B1 (ko) | 2012-07-12 |
TWI377705B (ko) | 2012-11-21 |
US9159868B2 (en) | 2015-10-13 |
US20140038328A1 (en) | 2014-02-06 |
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