JP6074274B2 - 半導体装置 - Google Patents
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- JP6074274B2 JP6074274B2 JP2013013130A JP2013013130A JP6074274B2 JP 6074274 B2 JP6074274 B2 JP 6074274B2 JP 2013013130 A JP2013013130 A JP 2013013130A JP 2013013130 A JP2013013130 A JP 2013013130A JP 6074274 B2 JP6074274 B2 JP 6074274B2
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 36
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- Light Receiving Elements (AREA)
- Optical Filters (AREA)
- Solid State Image Pick-Up Elements (AREA)
Description
本実施の形態では、本発明の一態様である半導体装置およびその作製方法の一形態について図面を参照して説明する。なお、本実施の形態では、半導体装置の一例として受光部を含むセンサを示す。
本実施の形態では、本発明の他の一態様である半導体装置およびその作製方法の一形態について図面を参照して説明する。なお、本実施の形態では、半導体装置の一例としてフォトダイオード(受光部)を含むセンサを示す。
実施の形態1で示したフォトダイオード(受光部ともいう)を含むセンサを用いて、対象物の情報を読み取るイメージセンサ機能を有する半導体装置を作製することができる。
102 光学距離調整膜
104 光学距離調整膜
105a レジストマスク
105b レジストマスク
106a 受光膜
106b 受光膜
109a レジストマスク
109b レジストマスク
109c レジストマスク
110 受光部
110a 受光部
110b 受光部
110c 受光部
112 絶縁膜
114 反射膜
114a 反射膜
114b 反射膜
114c 反射膜
116 絶縁膜
118a 配線
118b 配線
118c 配線
118d 配線
118e 配線
118f 配線
150 センサ
200 基板
202 光学距離調整膜
202a 光学距離調整膜
202b 光学距離調整膜
203a レジストマスク
203b レジストマスク
204 光学距離調整膜
206 光学距離調整膜
208 光学距離調整膜
210 受光部
210a 受光部
210b 受光部
210c 受光部
212 絶縁膜
214 反射膜
214a 反射膜
214b 反射膜
214c 反射膜
216 絶縁膜
218a 配線
218b 配線
218c 配線
218d 配線
218e 配線
218f 配線
250 センサ
300 基板
302 光学距離調整膜
304 光学距離調整膜
310 フォトダイオード
310a フォトダイオード
310b フォトダイオード
310c フォトダイオード
312 絶縁膜
314a 反射膜
314b 反射膜
314c 反射膜
316 絶縁膜
318a 配線
318b 配線
318c 配線
318d 配線
318e 配線
318f 配線
320 接着膜
322 光
323 基板
340 トランジスタ
356 トランジスタ
358 フォトダイオードリセット信号線
359 ゲート信号線
371 センサ出力信号線
372 センサ基準信号線
402 酸化チタン膜
404 酸化シリコン膜
410a 受光部
410b 受光部
410c 受光部
412 酸化シリコン膜
414a 反射膜
414b 反射膜
414c 反射膜
Claims (5)
- 光入射側に第1の光学距離調整膜と、
前記第1の光学距離調整膜上に設けられた第2の光学距離調整膜と、
前記第2の光学距離調整膜上に設けられた検出光の波長が異なる複数の受光素子と、
前記複数の受光素子上に設けられた絶縁膜と、
前記絶縁膜上に前記複数の受光素子のぞれぞれと重畳するように設けられた反射膜と、を有し、
前記複数の受光素子のぞれぞれは受光部の膜厚が異なっており、該膜厚は検出光の光学距離が該検出光の波長の4分の2の整数倍となる厚さであり、
前記第1の光学距離調整膜の屈折率は、前記第2の光学距離調整膜の屈折率よりも大きく、
前記複数の受光素子の屈折率は、前記第2の光学距離調整膜および前記絶縁膜の屈折率より大きく、
前記反射膜の屈折率は、前記絶縁膜の屈折率より大きく、
前記第1の光学距離調整膜、前記第2の光学距離調整膜及び前記絶縁膜の膜厚は、検出光の光学距離が該検出光の波長の4分の1となる厚さである半導体装置。 - 前記第1の光学距離調整膜の下に接する第3の光学距離調整膜と、
前記第3の光学距離調整膜の下に接する第4の光学距離調整膜と、を有し、
前記第3の光学距離調整膜は、前記第1の光学距離調整膜より屈折率が小さく、
前記第4の光学距離調整膜は、前記第3の光学距離調整膜より屈折率が大きい請求項1に記載の半導体装置。 - 光入射側に第1の光学距離調整膜と、
前記第1の光学距離調整膜上に設けられた第2の光学距離調整膜と、
前記第2の光学距離調整膜上に設けられた複数の受光素子と、
前記複数の受光素子上に設けられた絶縁膜と、
前記絶縁膜上に前記複数の受光素子のぞれぞれと重畳するように設けられた反射膜と、を有し、
前記受光素子は、
階段状に設けられた第3の光学距離調整膜と、
前記第3の光学距離調整膜上に設けられた検出光の波長が異なる複数の受光部と、を含み、
前記複数の受光素子が重畳する箇所において、前記第3の光学距離調整膜は膜厚がそれぞれ異なっており、該膜厚と複数の受光部の膜厚の合計は、検出光の光学距離が該検出光の波長の4分の2の整数倍となる厚さであり、
前記第1の光学距離調整膜の屈折率は、前記第2の光学距離調整膜の屈折率より大きく、
前記第2の光学距離調整膜の屈折率は、前記第3の光学距離調整膜の屈折率より小さく、
前記複数の受光部の屈折率は、前記第3の光学距離調整膜および前記絶縁膜の屈折率より大きく、
前記反射膜の屈折率は、前記絶縁膜の屈折率より大きく、
前記第1の光学距離調整膜、前記第2の光学距離調整膜及び前記絶縁膜の膜厚は、検出光の光学距離が該検出光の波長の4分の1となる厚さである半導体装置。 - 前記第1の光学距離調整膜の下に接する第4の光学距離調整膜と、
前記第4の光学距離調整膜の下に接する第5の光学距離調整膜と、を有し、
前記第4の光学距離調整膜は、前記第1の光学距離調整膜より屈折率が小さく、
前記第5の光学距離調整膜は、前記第4の光学距離調整膜より屈折率が大きい請求項3に記載の半導体装置。 - 前記複数の受光素子のぞれぞれは、前記受光部に検出光が入射する方向と交差する方向に電界が印加されるように配線が設けられている請求項1乃至請求項4に記載の半導体装置。
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