JP2010226143A - 固体撮像装置および撮像装置 - Google Patents
固体撮像装置および撮像装置 Download PDFInfo
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- JP2010226143A JP2010226143A JP2010146814A JP2010146814A JP2010226143A JP 2010226143 A JP2010226143 A JP 2010226143A JP 2010146814 A JP2010146814 A JP 2010146814A JP 2010146814 A JP2010146814 A JP 2010146814A JP 2010226143 A JP2010226143 A JP 2010226143A
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- state imaging
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Abstract
【解決手段】入射光を光電変換する受光部12を有する固体撮像装置1において、受光部12の受光面12sに形成した界面準位を下げる膜21と、界面準位を下げる膜21上に形成した負の固定電荷を有する膜22とを有し、受光部12の受光面12s側にホール蓄積層23が形成され、受光部12の側部に周辺回路が形成された周辺回路部14を有し、負の固定電荷を有する膜22の周辺回路部14表面からの距離が受光部12表面からの距離よりも長くなるように、周辺回路部14表面と負の固定電荷を有する膜22との間に絶縁膜21,24が形成されていることを特徴とする。
【選択図】図6
Description
Claims (5)
- 入射光を光電変換する受光部を有する固体撮像装置において、
前記受光部の受光面に形成した界面準位を下げる膜と、
前記界面準位を下げる膜上に形成した負の固定電荷を有する膜とを有し、
前記受光部の受光面側にホール蓄積層が形成され、
前記受光部の側部に周辺回路が形成された周辺回路部を有し、
前記負の固定電荷を有する膜の前記周辺回路部表面からの距離が前記受光部表面からの距離よりも長くなるように、前記周辺回路部表面と前記負の固定電荷を有する膜との間に絶縁膜が形成されている
固体撮像装置。 - 前記負の固定電荷を有する膜は、
酸化ハフニウム膜、酸化アルミニウム膜、酸化ジルコニウム膜、酸化タンタル膜、または酸化チタン膜である請求項1記載の固体撮像装置。 - 前記界面準位を下げる膜は酸化シリコン膜からなる
請求項1記載の固体撮像装置。 - 前記固体撮像装置は、
入射光量を電気信号に変換する受光部を有する複数の画素部と、前記画素部が形成された半導体基板の一面側に配線層を備え、前記配線層が形成されている面とは反対側より入射される光を前記受光部で受光する裏面照射型固体撮像装置である
請求項1〜請求項3のいずれか1項に記載の固体撮像装置。 - 入射光を集光する集光光学部と、
前記集光光学部で集光した前記入射光を受光して光電変換する固体撮像装置と、
光電変換された信号電荷を処理する信号処理部とを備え、
前記固体撮像装置は、
前記入射光を光電変換する前記固体撮像装置の受光部の受光面に形成した界面準位を下げる膜と、
前記界面準位を下げる膜上に形成した負の固定電荷を有する膜とを有し、
前記受光部の受光面にホール蓄積層が形成され、
前記受光部の側部に周辺回路が形成された周辺回路部を有し、
前記負の固定電荷を有する膜の前記周辺回路部表面からの距離が前記受光部表面からの距離よりも長くなるように、前記周辺回路部表面と前記負の固定電荷を有する膜との間に絶縁膜が形成されている
撮像装置。
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