JP2012209345A - 発光素子・受光素子組立体及びその製造方法 - Google Patents
発光素子・受光素子組立体及びその製造方法 Download PDFInfo
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- JP2012209345A JP2012209345A JP2011072401A JP2011072401A JP2012209345A JP 2012209345 A JP2012209345 A JP 2012209345A JP 2011072401 A JP2011072401 A JP 2011072401A JP 2011072401 A JP2011072401 A JP 2011072401A JP 2012209345 A JP2012209345 A JP 2012209345A
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- light
- receiving element
- emitting element
- light emitting
- light receiving
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Abstract
【解決手段】発光素子・受光素子組立体10は、凸部から成る第1の台座23が第1面21に設けられた実装用基板20、第1の台座23上に第1面が固定された受光素子30、並びに、発光素子40を備え、発光素子30から出射された光は、受光素子の光通過部34、第1の台座23及び実装用基板20を介して外部に出射され、外部から入射する光は、実装用基板20及び第1の台座23を介して受光素子30に入射し、受光素子30の第2面32には、凸部から成る環状の第2の台座33が設けられており、発光素子40は第2の台座33上に固定されている。
【選択図】 図1
Description
素子形成基板に第1のピッチで作製された複数個の素子を、個片化されてはいるものの、前記第1のピッチを保ったひとまとまりの状態で、一時保持用基板上に保持する工程と、
素子配置基板主部表面に、平面形状が前記第1のピッチ未満の大きさであり、座面が周囲の基板主部表面よりわずかに高い素子搭載用台座を、前記第1のピッチの整数倍の大きさの第2のピッチで複数個形成して、素子配置基板を得る工程と、
前記素子搭載用台座の前記座面に未硬化の接着剤層を配置する工程と、
互いの主面が対向した状態で前記一時保持用基板と前記素子配置基板とを接近させ、前記複数個の素子のうちの一部の素子を、前記未硬化の接着剤層に接触させる工程と、
前記未硬化の接着剤層を硬化させ、この接着剤層に接触している前記一部の素子を前記素子搭載用台座上に固定する工程と、
前記接着剤層に接触した前記一部の素子を前記素子搭載用台座上に残して、前記一時保持用基板と前記素子配置基板とを離間させる工程、
とから成る。
上面に面発光素子が形成された第一基材と、
第一基材の上に設けられ、上面に受光素子が形成された第二基材と、
受光素子に設けられ、前記面発光素子が発光した光を射出する射出窓と、
射出窓と面発光素子との間に設けられ、光が通過する通過部、
とを備えている。
第1面、及び、第1面と対向する第2面を有し、凸部から成る第1の台座が第1面に設けられた実装用基板、
第1面、及び、第1面と対向する第2面を有し、第1の台座上に第1面が固定された受光素子、並びに、
発光素子、
を備え、
受光素子は、発光素子から出射された光を通過させる光通過部を備えており、
発光素子から出射された光は、受光素子の光通過部、第1の台座及び実装用基板を介して外部に出射され、
外部から入射する光は、実装用基板及び第1の台座を介して受光素子に入射し、
受光素子の第2面には、凸部から成る環状の第2の台座が設けられており、
発光素子は第2の台座上に固定されている。
第1の台座が第1のピッチP1で設けられた実装用基板を準備し、
受光素子が、その第2面において、第2のピッチP2(但し、m2・P2=P1であり、m2は正の整数)で仮止めされた受光素子仮止め基板を準備し、
発光素子が、第3のピッチP3(但し、m3・P3=P1であり、m3は正の整数)で仮止めされた発光素子仮止め基板を準備し、
m2個毎に1個の受光素子の第1面を[即ち、(m2−1)個おきに1個の受光素子の第1面を]第1の台座上に配置した後、配置された受光素子を受光素子仮止め基板から除き、
m3個毎に1個の発光素子を[即ち、(m3−1)個おきに1個の発光素子を]受光素子の第2面に設けられた第2の台座上に配置した後、配置された発光素子を発光素子仮止め基板から除く、
各工程を備えている。
1.本開示の発光素子・受光素子組立体及びその製造方法、全般に関する説明
2.実施例1(発光素子・受光素子組立体及びその製造方法)
3.実施例2(実施例1の変形)、その他
受光素子製造用基板において受光素子を製造した後、
受光素子を、その第2面において、第2のピッチP2で受光素子仮止め基板に仮止めし、次いで、
受光素子製造用基板を除去し、受光素子の第1面を露出させる、
各工程から成る形態とすることができる。尚、受光素子製造用基板において、受光素子を第2のピッチP2で製造することが好ましいが、これに限定するものではない。
発光素子製造用基板において発光素子を製造した後、
発光素子を、その第2面において、第3のピッチP3で発光素子仮止め基板に仮止めし、次いで、
発光素子製造用基板を除去し、発光素子の第1面を露出させる、
各工程から成る形態とすることができる。尚、発光素子製造用基板において、発光素子を第3のピッチP3で製造することが好ましいが、これに限定するものではない。
少なくとも第1の台座上に、光透過性の第1の接着層を形成し、
第1の台座上の第1の接着層に受光素子を載置して第1の台座上に配置した後、
配置された受光素子を受光素子仮止め基板から離間させる、
各工程から成る形態とすることができる。尚、光透過性の第1の接着層を、第1の台座及び実装用基板の第1面に(即ち、全面に)形成してもよい。
少なくとも第2の台座上に、第2の接着層を形成し、
第2の台座上の第2の接着層に発光素子を載置して第2の台座上に配置した後、
配置された発光素子を発光素子仮止め基板から離間させる、
各工程から成る形態とすることができる。尚、第2の接着層を、第2の台座から実装用基板の第1面に亙り(即ち、全面に)形成してもよい。
先ず、第1の台座23が第1のピッチP1で設けられた実装用基板20を準備する。具体的には、ガラス基板から成る実装用基板20の第1面21にリソグラフィ技術及びエッチング技術に基づき第1の台座23を形成する。更には、実装用基板20の第2面22に、周知の方法に基づき、第1のピッチP1にてレンズ24を形成する。レンズ24の光軸と第1の台座23の軸線とは一致している。そして、少なくとも第1の台座23上に、紫外線硬化型接着剤から成る光透過性の第1の接着層51を形成する。実施例1にあっては、具体的には、光透過性の第1の接着層51を、スピンコーティング法に基づき、第1の台座23及び実装用基板20の第1面21に(即ち、全面に)形成する。こうして、図4に示す状態を得ることができる。紫外線硬化型接着剤は、常温で硬化させることができるので、温度変化に起因する位置ずれなどが生じない利点がある。尚、印刷法等によって特定の第1の台座23上にだけ第1の接着層51を塗布することで、特定の第1の台座23上にだけ受光素子30を配置することもできる。第1の台座23及びレンズ24は実装用基板20に2次元マトリクス状に形成されているが、実施例1にあっては、X方向及びY方向共、第1のピッチP1にて第1の台座23及びレンズ24を形成する。但し、X方向及びY方向に異なるピッチP’1,P”1(P’1≠P”1)にて第1の台座23及びレンズ24を形成してもよい。
そして、m2個毎に1個の受光素子30の第1面31を第1の台座23上に配置した後、配置された受光素子30を受光素子仮止め基板60から除く。
その後、m3個毎に1個の発光素子40を受光素子30の第2面32に設けられた第2の台座33上に配置した後、配置された発光素子40を発光素子仮止め基板70から除く。
その後、全面に、限定するものではないが、例えばポリイミド樹脂から成る絶縁層53を形成し、発光素子40におけるn側電極144及びp側電極145、受光素子30におけるn側電極及びp側電極に達する開口部を、限定するものではないが、例えばレーザ加工法に基づき絶縁層53に形成し、開口部内を配線材料で充填して接続孔54,56を設け、且つ、絶縁層53上に接続孔54,56から延びるパッド部55,56を設けることで、発光素子40及び受光素子30を外部の回路に接続することができる。その後、必要に応じて、半田バンプを形成してもよい。具体的には、全面にポリイミド樹脂等から成るパッシベーション層を形成し、パッド部55,56の上方のパッシベーション層の部分に開口部を形成し、開口部の底部に露出したパッド部55,56の部分に、金層及びニッケル層の積層構造を有するUBM(Under Bump Metal)層を形成する。そして、UBM層上に、錫・銀・銅合金から成る半田ペーストをスクリーン印刷法等によって半田バンプを形成する。
Claims (16)
- 第1面、及び、第1面と対向する第2面を有し、凸部から成る第1の台座が第1面に設けられた実装用基板、
第1面、及び、第1面と対向する第2面を有し、第1の台座上に第1面が固定された受光素子、並びに、
発光素子、
を備え、
受光素子は、発光素子から出射された光を通過させる光通過部を備えており、
発光素子から出射された光は、受光素子の光通過部、第1の台座及び実装用基板を介して外部に出射され、
外部から入射する光は、実装用基板及び第1の台座を介して受光素子に入射し、
受光素子の第2面には、凸部から成る環状の第2の台座が設けられており、
発光素子は第2の台座上に固定されている発光素子・受光素子組立体。 - 第2の台座は、金属層又は合金層から成る請求項1に記載の発光素子・受光素子組立体。
- 発光素子は面発光レーザ素子から成る請求項1又は請求項2に記載の発光素子・受光素子組立体。
- 面発光レーザ素子は背面発光型である請求項3に記載の発光素子・受光素子組立体。
- 実装用基板の第2面にはレンズが配設されており、
発光素子から出射された光は、受光素子の光通過部、第1の台座、実装用基板及びレンズを介して外部に出射され、
外部から入射する光は、レンズ、実装用基板及び第1の台座を介して受光素子に入射する請求項1乃至請求項4のいずれか1項に記載の発光素子・受光素子組立体。 - レンズの中央部には光反射部材が配設されており、
発光素子から出射された光の一部は、受光素子の光通過部、第1の台座、実装用基板及びレンズを介して外部に出射され、発光素子から出射された光の残部は、光反射部材によって反射され、実装用基板及び第1の台座を介して受光素子に入射する請求項5に記載の発光素子・受光素子組立体。 - レンズの中心と、受光素子及び発光素子の中心とは一致している請求項5又は請求項6に記載の発光素子・受光素子組立体。
- 第1の台座の外形形状は、受光素子の第1面の外形形状と同じである請求項1乃至請求項7のいずれか1項に記載の発光素子・受光素子組立体。
- 第2の台座の外形形状は、発光素子の第1面の外形形状と同じである請求項1乃至請求項8のいずれか1項に記載の発光素子・受光素子組立体。
- 受光素子の第1面は、光透過性の第1の接着層によって第1の台座上に固定されている請求項1乃至請求項9のいずれか1項に記載の発光素子・受光素子組立体。
- 発光素子は、第2の接着層によって第2の台座上に固定されている請求項1乃至請求項10のいずれか1項に記載の発光素子・受光素子組立体。
- 第1面、及び、第1面と対向する第2面を有し、凸部から成る第1の台座が第1面に設けられた実装用基板、
第1面、及び、第1面と対向する第2面を有し、第1の台座上に第1面が固定された受光素子、並びに、
発光素子、
を備え、
受光素子は、発光素子から出射された光を通過させる光通過部を備えており、
発光素子から出射された光は、受光素子の光通過部、第1の台座及び実装用基板を介して外部に出射され、
外部から入射する光は、実装用基板及び第1の台座を介して受光素子に入射し、
受光素子の第2面には、凸部から成る環状の第2の台座が設けられており、
発光素子は第2の台座上に固定されている発光素子・受光素子組立体の製造方法であって、
第1の台座が第1のピッチP1で設けられた実装用基板を準備し、
受光素子が、その第2面において、第2のピッチP2(但し、m2・P2=P1であり、m2は正の整数)で仮止めされた受光素子仮止め基板を準備し、
発光素子が、第3のピッチP3(但し、m3・P3=P1であり、m3は正の整数)で仮止めされた発光素子仮止め基板を準備し、
m2個毎に1個の受光素子の第1面を第1の台座上に配置した後、配置された受光素子を受光素子仮止め基板から除き、
m3個毎に1個の発光素子を受光素子の第2面に設けられた第2の台座上に配置した後、配置された発光素子を発光素子仮止め基板から除く、
各工程を備えている発光素子・受光素子組立体の製造方法。 - 受光素子仮止め基板を準備する工程は、
受光素子製造用基板において受光素子を製造した後、
受光素子を、その第2面において、第2のピッチP2で受光素子仮止め基板に仮止めし、次いで、
受光素子製造用基板を除去し、受光素子の第1面を露出させる、
各工程から成る請求項12に記載の発光素子・受光素子組立体の製造方法。 - 発光素子仮止め基板を準備する工程は、
発光素子製造用基板において発光素子を製造した後、
発光素子を、その第2面において、第3のピッチP3で発光素子仮止め基板に仮止めし、次いで、
発光素子製造用基板を除去し、発光素子の第1面を露出させる、
各工程から成る請求項12又は請求項13に記載の発光素子・受光素子組立体の製造方法。 - m2個毎に1個の受光素子の第1面を第1の台座上に配置した後、配置された受光素子を受光素子仮止め基板から除く工程は、
少なくとも第1の台座上に、光透過性の第1の接着層を形成し、
第1の台座上の第1の接着層に受光素子を載置して第1の台座上に配置した後、
配置された受光素子を受光素子仮止め基板から離間させる、
各工程から成る請求項12乃至請求項14のいずれか1項に記載の発光素子・受光素子組立体の製造方法。 - m3個毎に1個の発光素子を受光素子の第2面に設けられた第2の台座上に配置した後、配置された発光素子を発光素子仮止め基板から除く工程は、
少なくとも第2の台座上に、第2の接着層を形成し、
第2の台座上の第2の接着層に発光素子を載置して第2の台座上に配置した後、
配置された発光素子を発光素子仮止め基板から離間させる、
各工程から成る請求項12乃至請求項15のいずれか1項に記載の発光素子・受光素子組立体の製造方法。
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US13/410,441 US9159712B2 (en) | 2011-03-29 | 2012-03-02 | Light emitting device-light receiving device assembly, and manufacturing method thereof |
KR1020120025902A KR20120112025A (ko) | 2011-03-29 | 2012-03-14 | 발광 소자?수광 소자 조립체 및 그 제조 방법 |
CN201210077897.9A CN102738090B (zh) | 2011-03-29 | 2012-03-22 | 发光元件-光接收元件组件及其制造方法 |
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US20120248977A1 (en) | 2012-10-04 |
CN102738090A (zh) | 2012-10-17 |
JP5659903B2 (ja) | 2015-01-28 |
KR20120112025A (ko) | 2012-10-11 |
US9159712B2 (en) | 2015-10-13 |
CN102738090B (zh) | 2016-09-21 |
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