JP2022056551A - 発光装置の製造方法 - Google Patents
発光装置の製造方法 Download PDFInfo
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 5
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Abstract
Description
第1面と前記第1面の反対側の第2面を有する透光性部材と、前記透光性部材の前記第2面を被覆する粒子状の無機物で構成される被覆層と、を備える光学部材を準備する工程と、
上面と前記上面と反対側の下面とを有する半導体積層体と、前記半導体積層体の下面に配置される正負一対の素子電極と、を備える発光素子を準備する工程と、
前記半導体積層体の前記上面と前記光学部材の前記被覆層との間に、液状の接合部材を配置し硬化させる工程と、
を備える発光装置の製造方法。
光学部材30を準備する。光学部材30は、以下の工程の一部又は全部を行って準備することができる。あるいは、光学部材30は購入して準備することができる。
発光素子20を準備する。発光素子20としては、公知の発光ダイオードを例示する。発光素子20は、主に発光を取り出す主発光面と、主発光面と反対側の電極形成面に一対の素子電極を有する。このような発光素子20は、電圧を印加することで自ら発光する半導体素子であり、窒化物半導体等から構成される既知の半導体素子を適用できる。発光素子としては、例えばLEDチップが挙げられる。発光素子は、少なくとも半導体積層体を備え、多くの場合に素子基板をさらに備える。発光素子の上面視形状は、矩形、特に正方形状又は一方向に長い長方形状であることが好ましいが、その他の形状であってもよく、例えば六角形状であれば発光効率を高めることもできる。発光素子の側面は、上面に対して、垂直であってもよいし、内側又は外側に傾斜していてもよい。また、発光素子は、正負一対の素子電極を有する。素子電極は、金、銀、錫、白金、ロジウム、チタン、アルミニウム、タングステン、パラジウム、ニッケル又はこれらの合金で構成することができる。発光素子の発光ピーク波長は、半導体材料やその混晶比によって、紫外域から赤外域まで選択することができる。半導体材料としては、波長変換物質を効率良く励起できる短波長の光を発光可能な材料である、窒化物半導体を用いることが好ましい。窒化物半導体は、主として一般式InxAlyGa1-x-yN(0≦x、0≦y、x+y≦1)で表される。発光素子の発光ピーク波長は、発光効率、並びに波長変換物質の励起及びその発光との混色関係等の観点から、400nm以上530nm以下が好ましく、420nm以上490nm以下がより好ましく、450nm以上475nm以下がよりいっそう好ましい。素子基板の母材としては、サファイア、窒化ガリウム、窒化アルミニウム、などが挙げられる。なかでも、サファイアが好ましい。素子基板の厚さは、適宜選択でき、例えば0.02mm以上1mm以下であり、素子基板の強度及び/若しくは発光装置の厚さの観点において、0.05mm以上0.3mm以下であることが好ましい。
尚、光学部材30と発光素子20は、どちらを先に準備してもよく、また、並行して準備してもよい。
まず、図2Dに示すように、素子電極22を下側に向けた状態で発光素子20を基板10上に載置する。基板10が発光装置の一部として機能する場合は、基板10は、絶縁性の基材11と、導電部材12と、を備える。また、基板10が製造工程内においてのみ用いられ、最終的には除去される場合は、基板10は、絶縁性又は導電性の基材のみから構成されていてもよい。以下、発光装置の一部を構成する基板を用いる場合を例に挙げて説明する。
10…基板(11…基材、12…導電部材)
20…発光素子(21…半導体積層体、22…素子電極)
30…光学部材
31…透光性部材(311…第1面、312…第2面)
32…被覆層
40…接合部材
50…封止部材
Claims (4)
- 第1面と前記第1面の反対側の第2面を有する透光性部材と、前記透光性部材の前記第2面を被覆する粒子状の無機物で構成される被覆層と、を備える光学部材を準備する工程と、
上面と前記上面と反対側の下面とを有する半導体積層体と、前記半導体積層体の下面に配置される正負一対の素子電極と、を備える発光素子を準備する工程と、
前記半導体積層体の前記上面と前記光学部材の前記被覆層との間に、液状の接合部材を配置し硬化させる工程と、
を備える発光装置の製造方法。 - 前記被覆層は、前記第2面の全体に配置される、請求項1に記載の発光装置の製造方法。
- 前記被覆層は、酸化珪素、酸化アルミニウムを少なくとも含む、請求項1又は請求項2に記載の発光装置の製造方法。
- 前記被覆層は、厚みが30μm~480μmである、請求項1~請求項3のいずれか1項に記載の発光装置の製造方法。
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JP2006339217A (ja) | 2005-05-31 | 2006-12-14 | Konica Minolta Opto Inc | 発光ダイオード及びその製造方法 |
JP2012033823A (ja) | 2010-08-02 | 2012-02-16 | Stanley Electric Co Ltd | 発光装置およびその製造方法 |
DE102010053362B4 (de) | 2010-12-03 | 2021-09-30 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Verfahren zur Herstellung eines strahlungsemittierenden Halbleiterchips, strahlungsemittierender Halbleiterchip und strahlungsemittierendes Bauelement |
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JP2007073733A (ja) * | 2005-09-07 | 2007-03-22 | Konica Minolta Holdings Inc | 発光ダイオード(led)及び発光ダイオードの製造方法 |
JP2014086549A (ja) * | 2012-10-23 | 2014-05-12 | Stanley Electric Co Ltd | 半導体発光装置およびその製造方法 |
JP2015090887A (ja) * | 2013-11-05 | 2015-05-11 | 株式会社日本セラテック | 発光素子及び発光装置 |
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