JP2007221175A - 半導体発光素子及び半導体発光装置 - Google Patents
半導体発光素子及び半導体発光装置 Download PDFInfo
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Abstract
【解決手段】サファイア基板20上のInGaN活性層22に電流を注入するp型電極26が、p型GaN層24とのオーミック接触の取れるオーミック電極としてのNi層32、バリア電極としてのMo層33、高反射電極としてのAl層34、バリア電極となるTi層35、リードフレーム12上のサブマウント13との接触性を向上させるオーバーコート電極となるAu層36の5層構造であることを特徴としている。
【選択図】図2
Description
11…半導体発光素子(半導体チップ)
12…リードフレーム
13…サブマウント
14…オーミック電極
15…ボンディングワイヤ
16…導電ペースト
17…AuSn
18…エポキシ樹脂
19…絶縁膜
20、200…サファイア基板
21、210…n型GaN層
22…InGaN活性層
23…p型AlGaN層
24、220…p型GaN層
25、48、67、90、230、380、460、470…n型電極
26、47、68、89、240、250、260、370、480…p型電極
27、46…絶縁膜
28、30、35、52…Ti層
29、34、51…Al層
31、36、53…Au層
32…Ni層
33、50…Mo層
40…n型GaP基板
41、42、65、82、320、440…n型InGaAlP層
43、63、84、330、430…InGaAlP活性層
44、61、86、340、410、420…p型InGaAlP層
45、360…p型GaAs層
49…AuZn層
55、81…発光層
60、400…p型GaP基板
62、85…p型InAlP層
64、83…n型InAlP層
66、310…n型GaAs層
69、91…高反射膜
70、92、300…n型GaAs基板
71…エッチングストップ層
72…Si層
73…Al2O3層
80…n型GaP基板
87…アンドープGaP層
88…p型GaP層
93…GaAs層
94…SiO2層
350…p型AlGaAs層
450…n型AlGaAs層
Claims (7)
- 実質的に透明な半導体基板上に設けられた第1導電型の第1半導体層と、
前記第1半導体層上に設けられ、自然放出光を発生して放出する活性層と、
前記活性層上に設けられた第2導電型の第2半導体層と、
前記半導体基板の裏面の一部に設けられた第1電極と、
前記半導体基板の裏面の前記第1電極と同一面上に設けられ、前記第1電極よりも高反射率の光反射膜と、
前記第2半導体層上に設けられた第2電極と
を具備し、前記活性層から前記第2半導体層側へ放出された発光は該第2半導体層を透過して外部へ取り出され、
前記活性層から前記第1半導体層側へ放出された発光は前記半導体基板を透過して前記光反射膜で反射されて前記第2半導体層側から取り出される
ことを特徴とする半導体発光素子。 - 前記第1、第2半導体層及び前記活性層は、前記半導体基板上の一部にのみ設けられ、
前記半導体基板上に、少なくとも前記第1、第2半導体層及び前記活性層の側面を取り囲むようにして設けられた電流狭窄層と、
前記第1、第2半導体層、前記活性層及び前記電流狭窄層上に設けられた第3半導体層と
を更に備え、
前記第2電極は前記半導体基板の裏面において、前記活性層の直下の領域に設けられ、該半導体基板の裏面のその他の領域には前記光反射膜が設けられ、
前記光反射膜で反射された発光は、前記電流狭窄層を透過して外部へ取り出される
ことを特徴とする請求項1記載の半導体発光素子。 - 前記光反射膜は、少なくとも金属を主とする材料で構成されている
ことを特徴とする請求項1または2記載の半導体発光素子。 - 前記光反射膜は、少なくとも誘電体を主とする材料で構成されている
ことを特徴とする請求項1または2記載の半導体発光素子。 - 前記光反射膜は、少なくとも前記半導体基板よりも屈折率の高い高屈折率膜と、
前記高屈折率膜よりも屈折率の低い低屈折率膜との多層構造を有する
ことを特徴とする請求項1または2記載の半導体発光素子。 - 前記第1、第2半導体層及び前記活性層は、InP、GaP、AlP、GaAsの材料からなるグループのうち2つ以上の材料の混晶により構成されている
ことを特徴とする請求項1乃至5いずれか1項記載の半導体発光素子。 - 外部との電力の授受を行うリードフレームと、
前記リードフレーム上に設けられ、該リードフレームと電気的に接続された導電性のサブマウントと、
前記サブマウント上に半導体基板を下にして設けられ、前記サブマウントと電気的に接続された半導体発光素子と、
少なくとも前記サブマウント及び前記半導体発光素子を被覆する保護部材と
を具備し、前記半導体発光素子は、
実質的に透明な半導体基板上に設けられた第1導電型の第1半導体層と、
前記第1半導体層上に設けられ、自然放出光を発生して放出する活性層と、
前記活性層上に設けられた第2導電型の第2半導体層と、
前記半導体基板の裏面の一部に設けられた第1電極と、
前記半導体基板の裏面の前記第1電極と同一面上に設けられ、前記第1電極よりも高反射率の光反射膜と、
前記第2半導体層上に設けられた第2電極と
を具備し、前記活性層から前記第2半導体層側へ放出された発光は該第2半導体層を透過して外部へ取り出され、
前記活性層から前記第1半導体層側へ放出された発光は前記半導体基板を透過して前記光反射膜で反射されて前記第2半導体層側から取り出される
ことを特徴とする半導体発光装置。
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009088160A (ja) * | 2007-09-28 | 2009-04-23 | Dowa Electronics Materials Co Ltd | 発光ダイオードおよびその製造方法 |
JP2009246051A (ja) * | 2008-03-28 | 2009-10-22 | Kyocera Corp | 発光デバイスおよびその製造方法 |
JP2011515859A (ja) * | 2008-03-26 | 2011-05-19 | ラティス パワー (チアンシ) コーポレイション | 高反射性オーム電極を有する半導体発光デバイス |
JP2013528953A (ja) * | 2010-06-17 | 2013-07-11 | オスラム オプト セミコンダクターズ ゲゼルシャフト ミット ベシュレンクテル ハフツング | オプトエレクトロニクス半導体チップの製造方法、および、オプトエレクトロニクス半導体チップ |
JP2014096591A (ja) * | 2012-11-09 | 2014-05-22 | Lg Innotek Co Ltd | 発光素子 |
Citations (8)
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JPS49149679U (ja) * | 1973-04-27 | 1974-12-25 | ||
JPH0488684A (ja) * | 1990-08-01 | 1992-03-23 | Koito Mfg Co Ltd | Ledチップの電極構造 |
JPH0645651A (ja) * | 1992-05-22 | 1994-02-18 | Sanyo Electric Co Ltd | n型SiC用電極とその形成方法 |
JPH0690021A (ja) * | 1992-09-08 | 1994-03-29 | Sharp Corp | 炭化珪素を用いたpn接合型発光ダイオード |
JPH0722646A (ja) * | 1993-06-30 | 1995-01-24 | Mitsubishi Chem Corp | 電流ブロック層を有するled |
JPH09186365A (ja) * | 1995-12-21 | 1997-07-15 | Hewlett Packard Co <Hp> | 発光半導体デバイス用高反射性接点及びその製造方法 |
JPH11186613A (ja) * | 1997-12-19 | 1999-07-09 | Matsushita Electron Corp | 半導体発光装置 |
JPH11191641A (ja) * | 1997-10-14 | 1999-07-13 | Matsushita Electron Corp | 半導体発光素子とこれを用いた半導体発光装置及びその製造方法 |
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2007
- 2007-06-04 JP JP2007148137A patent/JP4625827B2/ja not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49149679U (ja) * | 1973-04-27 | 1974-12-25 | ||
JPH0488684A (ja) * | 1990-08-01 | 1992-03-23 | Koito Mfg Co Ltd | Ledチップの電極構造 |
JPH0645651A (ja) * | 1992-05-22 | 1994-02-18 | Sanyo Electric Co Ltd | n型SiC用電極とその形成方法 |
JPH0690021A (ja) * | 1992-09-08 | 1994-03-29 | Sharp Corp | 炭化珪素を用いたpn接合型発光ダイオード |
JPH0722646A (ja) * | 1993-06-30 | 1995-01-24 | Mitsubishi Chem Corp | 電流ブロック層を有するled |
JPH09186365A (ja) * | 1995-12-21 | 1997-07-15 | Hewlett Packard Co <Hp> | 発光半導体デバイス用高反射性接点及びその製造方法 |
JPH11191641A (ja) * | 1997-10-14 | 1999-07-13 | Matsushita Electron Corp | 半導体発光素子とこれを用いた半導体発光装置及びその製造方法 |
JPH11186613A (ja) * | 1997-12-19 | 1999-07-09 | Matsushita Electron Corp | 半導体発光装置 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009088160A (ja) * | 2007-09-28 | 2009-04-23 | Dowa Electronics Materials Co Ltd | 発光ダイオードおよびその製造方法 |
JP2011515859A (ja) * | 2008-03-26 | 2011-05-19 | ラティス パワー (チアンシ) コーポレイション | 高反射性オーム電極を有する半導体発光デバイス |
JP2009246051A (ja) * | 2008-03-28 | 2009-10-22 | Kyocera Corp | 発光デバイスおよびその製造方法 |
JP2013528953A (ja) * | 2010-06-17 | 2013-07-11 | オスラム オプト セミコンダクターズ ゲゼルシャフト ミット ベシュレンクテル ハフツング | オプトエレクトロニクス半導体チップの製造方法、および、オプトエレクトロニクス半導体チップ |
US9257612B2 (en) | 2010-06-17 | 2016-02-09 | Osram Opto Semiconductors Gmbh | Method for producing an optoelectronic semiconductor chip, and optoelectronic semiconductor chip |
US9627588B2 (en) | 2010-06-17 | 2017-04-18 | Osram Opto Semiconductors Gmbh | Method for producing an optoelectronic semiconductor chip, and optoelectronic semiconductor chip |
KR101857426B1 (ko) * | 2010-06-17 | 2018-05-14 | 오스람 옵토 세미컨덕터스 게엠베하 | 광전자 반도체칩의 제조 방법 및 광전자 반도체칩 |
JP2014096591A (ja) * | 2012-11-09 | 2014-05-22 | Lg Innotek Co Ltd | 発光素子 |
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