KR20130125831A - 반도체 발광 소자 및 그 제조 방법 - Google Patents
반도체 발광 소자 및 그 제조 방법 Download PDFInfo
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Abstract
Description
도 2 (a)는 본 발명에 따른 반도체 발광 소자(100)를 나타내는 모식 단면도이며, (b)는 (a)에 나타낸 반도체 발광 소자(100)에서, 패드 전극(105) 및 도전성 경질막(110)을 없앤 상태의 상면도이며, 오믹 전극의 배치 관계를 설명하는 도면이다.
도 3은 본 발명에 따른 반도체 발광 소자(100)의 제조 공정의 일례를 나타내는 모식 단면도이다.
도 4 (a)는 비교예 1의 반도체 발광 소자(200)를 나타내는 모식 단면도이며, (b)는 비교예 2의 반도체 발광 소자(300)를 나타내는 모식 단면도이며, (c)는 비교예 3의 반도체 발광 소자(400)를 나타내는 모식 단면도이다.
도 5는 실시예에서, 도전성 경질막(110)으로서의 TiN의 막 두께와 볼 쉐어 시험에서의 쉐어 강도 및 박리율의 관계를 나타낸 그래프이다.
101 n형 반도체층(제1 도전형 반도체층)
102 발광층(발광부)
103 p형 반도체층(제2 도전형 반도체층)
104 반도체층
105 패드 전극
106 투광성 절연층
107 반사층
108 반사부
109 오믹 전극(컨택트부)
110 도전성 경질막
111 오믹 전극
112 절연막
113 반사층
114 금속 접합층
115 지지 기판
116 하부 전극
Claims (10)
- 발광부를 포함하는 반도체층과, 상기 반도체층 상에 위치하는 패드 전극을 가지는 반도체 발광 소자로서:
상기 반도체층과 상기 패드 전극의 사이에,
상기 반도체층 상에 위치하는 전류 차단층으로서의 투광성 절연층, 및 상기 투광성 절연층 상에 위치하는 반사층을 포함하는 반사부와,
상기 반도체층 상에 위치하고, 상기 반사부와 접하는 오믹 전극으로 이루어지는 컨택트부를 가지고,
상기 반사층과 상기 패드 전극의 사이에 도전성 경질막을 가지고, 상기 도전성 경질막의 비커스 경도를 HV(Hv), 두께를 t(㎛)로 했을 때에, HV×t>630인 것을 특징으로 하는 반도체 발광 소자.
- 제1항에 있어서,
상기 도전성 경질막은 상기 패드 전극 및 상기 반사층의 어느 비커스 경도보다도 높은 비커스 경도 HV를 가지는 반도체 발광 소자.
- 제1항 또는 제2항에 있어서,
상기 도전성 경질막의 비커스 경도 HV는 600 Hv 이상인 반도체 발광 소자.
- 제1항 내지 제3항 중 어느 한 항에 있어서,
상기 도전성 경질막의 두께 t는 0.3 ㎛ 이상인 반도체 발광 소자.
- 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 도전성 경질막의 두께 t는 2 ㎛ 이하인 반도체 발광 소자.
- 제1항 내지 제5항 중 어느 한 항에 있어서,
상기 도전성 경질막은 Ti, Ta, Cr, W, Mo, V 중 어느 하나를 포함하는 단체(單體) 또는 질화물인 반도체 발광 소자.
- 제1항 내지 제6항 중 어느 한 항에 있어서,
상기 도전성 경질막의 통전시의 전압 강하는 상기 반도체층에서의 허용한계 전압 이하인 반도체 발광 소자.
- 제1항 내지 제7항 중 어느 한 항에 있어서,
상기 도전성 경질막은 상기 반사층의 전부 및 상기 오믹 전극의 적어도 일부를 가리는 반도체 발광 소자.
- 제1항 내지 제8항 중 어느 한 항에 있어서,
상기 오믹 전극은 상기 반사부를 둘러싸도록 형성되는 반도체 발광 소자.
- 발광부를 포함하는 반도체층과, 상기 반도체층 상에 위치하는 패드 전극을 가지는 반도체 발광 소자의 제조 방법으로서:
상기 반도체층을 형성하는 공정과,
상기 반도체층 상에 소정 패턴의 오믹 전극으로 이루어지는 컨택트부를 형성하는 공정과,
상기 반도체층 상에 전류 차단층으로서의 투광성 절연층을 형성하고, 상기 투광성 절연층 상에 반사층을 형성함으로써, 상기 컨택트부와 접하는 반사부를 형성하는 공정과,
상기 반사층 상에, 비커스 경도를 HV(Hv), 두께를 t(㎛)로 했을 때에, HV×t>630이 되는 도전성 경질막을 형성하는 공정과,
상기 도전성 경질막 상에, 상기 패드 전극을 형성하는 공정을 가지는 반도체 발광 소자의 제조 방법.
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JPJP-P-2011-053399 | 2011-03-10 | ||
JP2011053399 | 2011-03-10 | ||
PCT/JP2012/001634 WO2012120894A1 (ja) | 2011-03-10 | 2012-03-09 | 半導体発光素子およびその製造方法 |
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EP (1) | EP2685511B1 (ko) |
JP (1) | JP5779642B2 (ko) |
KR (1) | KR101527669B1 (ko) |
CN (1) | CN103430335B (ko) |
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JP4946663B2 (ja) * | 2007-06-29 | 2012-06-06 | 日亜化学工業株式会社 | 半導体発光素子 |
JP4985260B2 (ja) | 2007-09-18 | 2012-07-25 | 日立電線株式会社 | 発光装置 |
JP5224859B2 (ja) | 2008-03-19 | 2013-07-03 | Dowaエレクトロニクス株式会社 | 半導体発光素子およびその製造方法 |
JP2010278112A (ja) | 2009-05-27 | 2010-12-09 | Hitachi Cable Ltd | 半導体発光素子 |
JP2011066453A (ja) * | 2010-12-27 | 2011-03-31 | Toshiba Corp | 半導体発光素子及び半導体発光装置 |
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2012
- 2012-03-09 EP EP12755275.0A patent/EP2685511B1/en active Active
- 2012-03-09 CN CN201280012596.6A patent/CN103430335B/zh active Active
- 2012-03-09 US US14/003,114 patent/US9172005B2/en active Active
- 2012-03-09 KR KR1020137025556A patent/KR101527669B1/ko active Active
- 2012-03-09 TW TW101108249A patent/TWI490927B/zh active
- 2012-03-09 WO PCT/JP2012/001634 patent/WO2012120894A1/ja active Application Filing
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Also Published As
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WO2012120894A1 (ja) | 2012-09-13 |
EP2685511A4 (en) | 2014-08-13 |
KR101527669B1 (ko) | 2015-06-09 |
JPWO2012120894A1 (ja) | 2014-07-17 |
JP5779642B2 (ja) | 2015-09-16 |
EP2685511A1 (en) | 2014-01-15 |
US20140001508A1 (en) | 2014-01-02 |
CN103430335A (zh) | 2013-12-04 |
US9172005B2 (en) | 2015-10-27 |
TWI490927B (zh) | 2015-07-01 |
CN103430335B (zh) | 2016-05-04 |
EP2685511B1 (en) | 2017-04-26 |
TW201308406A (zh) | 2013-02-16 |
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