JP7086198B2 - 撮像モジュールのパーティクル欠陥を減少させるcvd製造方法及びその生成物 - Google Patents
撮像モジュールのパーティクル欠陥を減少させるcvd製造方法及びその生成物 Download PDFInfo
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- JP7086198B2 JP7086198B2 JP2020537720A JP2020537720A JP7086198B2 JP 7086198 B2 JP7086198 B2 JP 7086198B2 JP 2020537720 A JP2020537720 A JP 2020537720A JP 2020537720 A JP2020537720 A JP 2020537720A JP 7086198 B2 JP7086198 B2 JP 7086198B2
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Description
ベース基板を超音波洗浄して乾燥させ、前処理されたベース基板を得るS1、
前処理されたベース基板を反応キャビティに入れ、真空引きし、微正圧になるまで窒素ガス又は不活性ガスを導入するS2、
シランの流量が10~80sccm、酸素ガスの流量が20~80sccmになるように、500~700℃で、前駆体I及び前駆体IIを同時に導入し、ベース板上に堆積して低屈折率L層を形成するS3、
前駆体I及び前駆体IIの導入を停止し、窒素ガス又は不活性ガスで反応キャビティをパージするS4、
600~800℃条件において、前駆体IIIの流量が20~90sccm、前駆体IVの流量が20~60sccmであるように、原料ガスである前駆体III及び前駆体IVを導入し、低屈折率L層上に高屈折率H層を堆積するS5、
原料ガスである前駆体III及び前駆体IVの導入を停止し、窒素ガス又は不活性ガスで反応キャビティをパージするS6、
室温に冷却し、異なる屈折率のコーティングを有する光学素子を得るS7、前記高屈折率H層の屈折率が前記低屈折率L層の屈折率より高い。
(1)CVD(Chemical vapor deposition、化学気相堆積)によって、1回で高・低屈折率の膜層を複数層光学素子に交互に堆積することができ、反応材料が気相の形態で反応キャビティにおいて反応してベース基板上に堆積し、蒸発又はスパッタリング過程がなくなり、それによりパーティクル欠陥を引き起こすソースを解消し、従って、大粒子のパーティクル欠陥を形成することがなく、それにより、撮像モジュールの結像品質を大幅に向上させ、撮像モジュールの加工過程におけるCVDの実用性が活用される。
前処理されたベース基板を反応キャビティに入れ、真空引きし、微正圧になるまで窒素ガス又は不活性ガスを導入するステップS2と、
シランの流量が10~80sccm、酸素ガスの流量が20~80sccmであるように、500~700℃で、前駆体I及び前駆体IIを同時に導入し、ベース基板上に堆積して低屈折率L層を形成するステップS3と、
前駆体I及び前駆体IIの導入を停止し、窒素ガス又は不活性ガスで反応キャビティをパージするステップS4と、
600~800℃条件において、前駆体IIIの流量が20~90sccm、前駆体IVの流量が20~60sccmであるように、原料ガスである前駆体III及び前駆体IVを導入し、低屈折率L層上に高屈折率H層を堆積するステップS5と、
原料ガスである前駆体III及び前駆体IVの導入を停止し、窒素ガス又は不活性ガスで反応キャビティをパージするステップS6と、
室温に冷却し、異なる屈折率のコーティングを有する光学素子を得るステップS7とを含み、前記高屈折率H層の屈折率が前記低屈折率L層の屈折率より高い、ことを特徴とする撮像モジュールのパーティクル欠陥を減少させるCVD製造方法。上記光学素子は、二次熱処理、プラズマ処理などによって光学性能をさらに向上させることができる。
撮像モジュールであって、図3~5に示すように、CLCCパッケージを備え、CLCCパッケージは、基板1を備え、前記基板1上には、中央部に位置するCMOS 2、縁位置に位置するコンデンサ抵抗3及び駆動モータ4が貼り付けられ、前記基板1上には仕切り壁台座5が設けられ、前記仕切り壁台座5において、基板のCMOS 2、コンデンサ抵抗3及び駆動モータ4に対応する位置には、CMOSセンサ空位置、コンデンサ抵抗空位置及び駆動モータ空位置が設けられ、前記CMOSセンサ空位置の上面には、カバープレート6が取り付けられており、カバープレート6の表面パーティクルのサイズが10nm以下であり、粗さRaが1.135nmである。
前処理を行い、まず、ガラスベース基板を超音波洗浄機に入れて60min洗浄し、乾燥させ、前処理されたベース基板を得るステップS1、
前処理されたガラスベース基板を反応キャビティに入れ、0.1~5Torrまで真空引き、窒素ガス又は不活性ガスを導入するステップS2、
次に650~700℃で、それぞれ60sccm及び30sccmのレートで前記反応キャビティ内にシラン及び酸素ガスを0.015sパルスで導入し、2000回繰り返して導入し、ベース基板上にシリカを堆積して、厚み100~200nmの低屈折率L層を形成するステップS3、
原料ガスであるシラン及び酸素ガスの導入を停止し、窒素ガス又は不活性ガスで反応キャビティをパージし、プラズマ衝撃によって表面改質を行うステップS4、
700~800℃で、それぞれ30sccm及び30sccmのレートで前記反応キャビティ内にTiCl4及びO2を0.015s導入し、2000回繰り返して導入し、低屈折率L層上に厚み350~650nmの高屈折率H層TiO2を反応によって堆積するステップS5、
原料ガスTiCl4及びO2の導入を停止し、窒素ガス又は不活性ガスで反応キャビティをパージするステップS6、
室温に冷却し、異なる屈折率のコーティングを有する光学素子を得るステップS7。
撮像モジュールであって、CLCCパッケージを備え、CLCCパッケージは、基板1を備え、前記基板1上には、中央部に位置するCMOS 2、縁位置に位置するコンデンサ抵抗3及び駆動モータ4が貼り付けられ、前記基板1上には仕切り壁台座5が設けられ、前記仕切り壁台座5において、基板のCMOS 2、コンデンサ抵抗3及び駆動モータ4に対応する位置には、CMOSセンサ空位置、コンデンサ抵抗空位置及び駆動モータ空位置が設けられ、前記CMOSセンサ空位置の上面には、カバープレート6が取り付けられており、カバープレート6の表面パーティクルのサイズが10nm以下であり、粗さRaが0.433nmである。
前処理を行い、まず、水晶ベース基板を超音波洗浄機に入れて60min洗浄し、乾燥させ、前処理されたベース基板を得るステップS1、
前処理された水晶ベース基板を反応キャビティに入れ、0.1~5Torrまで真空引き、窒素ガス又は不活性ガスを導入するステップS2、
次に550~650℃で、それぞれ10sccm及び20sccmのレートで前記反応キャビティ内にシラン及び酸素ガスを0.010s導入し、1000回繰り返して導入し、ベース基板上にシリカを堆積して、厚み20~50nmの低屈折率L層を形成するステップS3、
原料ガスであるシラン及び酸素ガスの導入を停止し、窒素ガス又は不活性ガスで反応キャビティをパージし、プラズマ衝撃によって表面改質を行うステップS4、
700~800℃で、それぞれ20sccm及び20sccmのレートで前記反応キャビティ内にNbCl5及びオゾンを0.01s導入し、1000回繰り返して導入し、低屈折率L層上に厚みが10~100nmの高屈折率H層Nb2O5を反応によって堆積するステップS5、
NbCl5及びオゾンの導入を停止し、窒素ガス又は不活性ガスで反応キャビティをパージするステップS6、
室温に冷却し、異なる屈折率のコーティングを有する光学素子を得るステップS7。
撮像モジュールであって、CLCCパッケージを備え、CLCCパッケージは、基板1を備え、前記基板1上には、中央部に位置するCMOS 2、縁位置に位置するコンデンサ抵抗3及び駆動モータ4が貼り付けられ、前記基板1上には仕切り壁台座5が設けられ、前記仕切り壁台座5において、基板のCMOS 2、コンデンサ抵抗3及び駆動モータ4に対応する位置には、CMOSセンサ空位置、コンデンサ抵抗空位置及び駆動モータ空位置が設けられ、前記CMOSセンサ空位置の上面には、カバープレート6が取り付けられており、カバープレート6の表面パーティクルのサイズが100nm以下であり、粗さRaが5.962nmである。
前処理を行い、まず、サファイアベース基板を超音波洗浄機に入れて60min洗浄し、乾燥させ、前処理されたベース基板を得るステップS1、
前処理されたサファイアベース基板を反応キャビティに入れ、0.1~5Torrまで真空引き、窒素ガス又は不活性ガスを導入するステップS2、
次に500~700℃で、それぞれ80sccm及び80sccmのレートで前記反応キャビティ内にCp2Mg(ビス(シクロペンタジエニル)マグネシウム)及びフッ素ガス(F2)を0.005s導入し、800回繰り返して導入し、ベース基板上にMgF2を堆積して、厚み10~20nmの低屈折率L1層を形成するステップS3、
Cp2Mg(ビス(シクロペンタジエニル)マグネシウム)及びフッ素ガス(F2)の導入を停止し、窒素ガス又は不活性ガスで反応キャビティをパージし、プラズマ衝撃によって表面改質を行うステップS4、
600~750℃で、それぞれ90sccm及び60sccmのレートで前記反応キャビティ内にAl(CH3)3及びCO2を0.015s導入し、2000回繰り返して導入し、低屈折率L層上に厚み100~200nmの高屈折率H層Al2O3を反応によって堆積するステップS5、
Al(CH3)3及びCO2の導入を停止し、窒素ガス又は不活性ガスで反応キャビティをパージするステップS6、
次に650~700℃で、それぞれ80sccm及び80sccmのレートで前記反応キャビティ内にシラン及び酸素ガスを0.025s導入し、3000回繰り返して導入し、ベース基板上にシリカを堆積して、厚み200~300nmの低屈折率L2層を形成するステップS7、
原料ガスであるシラン及び酸素ガスの導入を停止し、窒素ガス又は不活性ガスで反応キャビティをパージするステップS8、
室温に冷却し、異なる屈折率のコーティングを有する光学素子を得るステップS9。
本実施例のターゲット製品は、実施例1と同様であり、用いる真空熱蒸発の製造方法のプロセスは、以下のとおりである。
まずベース基板ガラスを治具に入れ、治具をドームホルダーに置き、ドームホルダーをコーティング機のチャンバーに入れるステップS1。
2 CMOS
3 コンデンサ抵抗
4 駆動モータ
5 仕切り壁台座
6 カバープレート。
Claims (6)
- ベース基板を超音波洗浄して乾燥させ、前処理されたベース基板を得るステップS1と、
前処理されたベース基板を反応キャビティに入れ、真空引きし、微正圧になるまで窒素ガス又は不活性ガスを導入するステップS2と、
シランの流量が10~80sccm、酸素ガスの流量が20~80sccmであるように、500~700℃で、前駆体I及び前駆体IIを同時に導入し、ベース基板上に堆積して低屈折率L層を形成するステップS3と、
前駆体I及び前駆体IIの導入を停止し、窒素ガス又は不活性ガスで反応キャビティをパージするステップS4と、
600~800℃条件において、前駆体IIIの流量が20~90sccm、前駆体IVの流量が20~60sccmであるように、原料ガスである前駆体III及び前駆体IVを導入し、低屈折率L層上に高屈折率H層を堆積するステップS5と、
原料ガスである前駆体III及び前駆体IVの導入を停止し、窒素ガス又は不活性ガスで反応キャビティをパージするステップS6と、
室温に冷却し、異なる屈折率のコーティングを有する光学素子を得るステップS7とを含み、
前記高屈折率H層の屈折率が前記低屈折率L層の屈折率よりも高い
ことを特徴とする撮像モジュールのパーティクル欠陥を減少させるCVD製造方法。 - 周期的に繰り返すステップS3~S4及び/又はS5~S6をさらに含む
請求項1に記載の撮像モジュールのパーティクル欠陥を減少させるCVD製造方法。 - 前記光学素子のコーティング組合せは、SiO2低屈折率L層とTiO2高屈折率H層;SiO2低屈折率L層とNb2O5高屈折率H層;SiO2低屈折率L層+Ta3O5高屈折率H層;MgF2低屈折率L層とTiO2高屈折率H層;MgF2低屈折率L層とNb2O5高屈折率H層;Nb2O5低屈折率L層とTa3O5高屈折率H層;MgF2低屈折率L層、Al2O3高屈折率H層とSiO2低屈折率L層、Al2O3低屈折率L層、H4高屈折率H層及びMgF2低屈折率L層;Al2O3低屈折率L層、ZrO2高屈折率H層及びMgF2低屈折率L層を含む
請求項2に記載の撮像モジュールのパーティクル欠陥を減少させるCVD製造方法。 - 二成分材料膜構造では、前記高屈折率H層の屈折率と前記低屈折率L層の屈折率との差が0.5以上である
請求項3に記載の撮像モジュールのパーティクル欠陥を減少させるCVD製造方法。 - 前記ベース基板は、ガラス、水晶又はサファイア基板である
請求項1に記載の撮像モジュールのパーティクル欠陥を減少させるCVD製造方法。 - 前記前駆体IはSiH4 であり、前記前駆体IIはO2 であり、前記前駆体IIIはがTiH4、TiCl4、NbCl5、TaCl5、ZrCl4のうちの1種であり、前記前駆体IVはO2、O3、CO2、CO、NO2、NO、H2O、F2のうちの1種又は複数種である
請求項3に記載の撮像モジュールのパーティクル欠陥を減少させるCVD製造方法。
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