JP2017219443A - 光検出ユニット、光検出装置、及び、光検出ユニットの製造方法 - Google Patents
光検出ユニット、光検出装置、及び、光検出ユニットの製造方法 Download PDFInfo
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Abstract
【解決手段】
光検出ユニットDは、第1配線基板20と、受光面S1sと裏面S1rとを有し、第1主面20s上に二次元状に配列された複数の光検出チップS1と、第1バンプ電極BEと、受光面S1s上に設けられたガラス部材S2と、光反射性又は光吸収性を有する光遮蔽部Fと、を備える。光検出チップS1は、ガイガーモードAPDを含み、裏面S1rが第1主面20sに対向した状態において第1バンプ電極BEにより第1配線基板20に実装されている。光遮蔽部Fは、互いに隣接する光検出チップS1の間に位置する中間領域M1において、少なくとも受光面S1sよりもガラス部材S2に設けられている。
【選択図】図9
Description
Claims (8)
- 第1主面を有する第1配線基板と、
受光面と前記受光面の反対側の裏面とを有し、前記第1主面上に二次元状に配列された複数の光検出チップと、
前記光検出チップを前記第1配線基板に電気的に接続する第1バンプ電極と、
前記受光面上に設けられた光透過部と、
光反射性又は光吸収性を有する光遮蔽部と、
を備え、
前記光検出チップは、ガイガーモードAPDを含み、前記裏面が前記第1主面に対向した状態において前記第1バンプ電極により前記第1配線基板に実装されており、
前記光遮蔽部は、前記第1主面に交差する第1方向からみて互いに隣接する前記光検出チップの間に位置する中間領域において、少なくとも前記受光面よりも前記光透過部側に設けられている、
光検出ユニット。 - 前記光透過部は、前記受光面側の面の反対側の光入射面を含み、
前記第1方向について、前記光遮蔽部の前記光入射面側の端部は、前記光入射面より前記第1主面側に位置し、且つ、前記第1主面側に向けて窪んでいる、
請求項1に記載の光検出ユニット。 - 前記光透過部は、前記光検出チップのそれぞれの前記受光面に取り付けられたガラス部材であり、
前記光遮蔽部は、前記中間領域、及び、前記第1主面と前記裏面との間の第1下部領域にわたって一体的に設けられている、
請求項1又は2に記載の光検出ユニット。 - 前記光透過部は、複数の前記光検出チップを一体的に封止する樹脂部の一部であり、
前記樹脂部には、前記中間領域に位置する溝部が設けられており、
前記光遮蔽部は、前記溝部内に配置されている、
請求項1又は2に記載の光検出ユニット。 - 請求項1〜3のいずれか一項に記載の複数の光検出ユニットと、第2主面を有する第2配線基板と、前記光検出ユニットを前記第2配線基板に電気的に接続する第2バンプ電極と、を備え、
前記光検出ユニットは、前記第2主面に沿って配列され、且つ、前記第1配線基板の前記第1主面の反対側の底面が前記第2主面に対向した状態において、前記第2バンプ電極により前記第2配線基板に実装されており、
前記光遮蔽部は、前記中間領域、前記第1主面と前記裏面との間の第1下部領域、及び、前記第2主面と前記底面との間の第2下部領域にわたって一体的に設けられている、
光検出装置。 - 請求項4に記載の複数の光検出ユニットと、第2主面を有する第2配線基板と、前記光検出ユニットを前記第2配線基板に電気的に接続する第2バンプ電極と、とを備え、
前記光検出ユニットは、前記第2主面に沿って配列され、且つ、前記第1配線基板の前記第1主面の反対側の底面が前記第2主面に対向した状態において、前記第2バンプ電極により前記第2配線基板に実装されており、
前記光遮蔽部は、互いに隣り合う前記光検出ユニットの間における前記中間領域において、少なくとも前記受光面よりも前記光透過部側にさらに設けられている、
光検出装置。 - 第1主面を有する第1配線基板、及び、受光面と前記受光面の反対側の裏面とを有する複数の光検出チップを用意する第1工程と、
前記裏面が前記第1主面に対向するように、且つ、前記第1主面上に二次元状に配列されるように、前記裏面と前記第1主面との間に第1バンプ電極を介在させながら前記第1主面上に前記複数の光検出チップを配置する第2工程と、
前記第1バンプ電極のリフローにより、前記複数の光検出チップを前記第1主面に実装する第3工程と、
前記第1主面に交差する第1方向からみて互いに隣接する前記光検出チップの間に位置する中間領域、及び、前記第1主面と前記裏面との間の第1下部領域にアンダーフィル樹脂を充填する第4工程と、を備え、
前記光検出チップは、ガイガーモードAPDを含み、
前記光検出チップのそれぞれの前記受光面上には、光透過部が設けられており、
前記アンダーフィル樹脂は、光反射性又は光吸収性を有し、
前記第4工程においては、前記中間領域において少なくとも前記受光面よりも前記光透過部側に至るまで前記アンダーフィル樹脂を充填することにより、光遮蔽部を構成する、
光検出ユニットの製造方法。 - 第1主面を有する第1配線基板、及び、受光面と前記受光面の反対側の裏面とを有する複数の光検出チップを用意する第1工程と、
前記裏面が前記第1主面に対向するように、且つ、前記第1主面上に二次元状に配列されるように、前記裏面と前記第1主面との間に第1バンプ電極を介在させながら前記第1主面上に前記複数の光検出チップを配置する第2工程と、
前記第1バンプ電極のリフローにより、前記複数の光検出チップを前記第1主面に実装する第3工程と、
光透過性を有するモールド樹脂によって前記複数の光検出チップを一体的に封止する樹脂部を構成することにより、複数の前記受光面上にわたって前記樹脂部の一部である光透過部を構成する第4工程と、
前記第1主面に交差する第1方向からみて互いに隣接する前記光検出チップの間に位置する中間領域に位置するように、前記樹脂部に溝部を形成する第5工程と、
光反射性又は光吸収性を有する樹脂を前記溝部内に充填することにより光遮蔽部を構成する第6工程と、
を備え、
前記光検出チップは、ガイガーモードAPDを含み、
前記第5工程においては、前記中間領域において少なくとも前記受光面よりも前記光透過部側に前記溝部を形成する、
光検出ユニットの製造方法。
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