JP6767774B2 - 半導体装置、及び半導体装置の製造方法 - Google Patents
半導体装置、及び半導体装置の製造方法 Download PDFInfo
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Description
図1ないし図7を参照して、本実施の形態に係る半導体装置10、及び半導体装置10の製造方法について説明する。半導体装置10は、本発明に係る半導体装置を、半導体装置の一例である紫外線受光素子に適用した形態である。
n1・d1=λc/4 ・・・ (式1)
n2・d2=λc/4 ・・・ (式2)
図7を参照して、上記第1の実施の形態の変形例について説明する。
図8を参照して、本実施の形態に係る半導体装置60について説明する。半導体装置60は、上記の半導体装置10(図1参照)において、フィルタ群(PBカットフィルタ、UV−Aカットフィルタ)の構成を変更した形態である。
図9を参照して、本実施の形態に係る半導体装置70について説明する。半導体装置70は、上記の半導体装置10(図1参照)において、フィルタ群(PBカットフィルタ、UV−Aカットフィルタ)形成位置を変更した形態である。図9(a)は、半導体装置70の縦断面図を、図9(b)は平面図を各々示している。
図10を参照して、本実施の形態に係る半導体装置について説明する。本実施の形態は、上記各実施の形態において、フィルタ群を構成する多層膜フィルタの膜構成を変えた形態である。従って、多層膜フィルタ以外の半導体装置の構成は上記各実施の形態と同じであるので、多層膜フィルタ以外の半導体装置の説明については省略する。
12 基板
14 埋め込み酸化膜
15 シリコン層
16A、16B P+拡散層
18A、18B N+拡散層
20A、20B P−拡散層
22A、22B、22C 素子分離領域
24A、24B P側配線層
26A、26B N側配線層
28 層間絶縁膜
30A、30A’ 第1のフィルタ
30B 第2のフィルタ
31 第1のフィルタ
32 第3のフィルタ
33 第2のフィルタ
34 第1フィルタ膜
35 第2フィルタ膜
36、38 レジスト
40 第3フィルタ膜
42 開口
44A、44B 凹部
60 半導体装置
70 半導体装置
72 開口
80A 第1のフォトダイオード
80B 第2のフォトダイオード
90 多層膜フィルタ
92 第4のフィルタ
94 高屈折率膜
96 低屈折率膜
98 厚膜層
E1、E2 端部
L 配線
P コンタクトプラグ
X、Y 仮想線
Claims (9)
- 互いに隣接して配置されると共に各々受光した光の強度に応じた光電流を出力する第1の光電変換素子及び第2の光電変換素子と、
前記第1の光電変換素子の受光面上に設けられ第1の波長領域の光を遮断する第1のフィルタと、
前記第2の光電変換素子の受光面上に設けられ第2の波長領域の光を遮断する第2のフィルタと、
前記第2のフィルタに接して配置されかつ前記第2の光電変換素子の受光面上に設けられ第3の波長領域の光を遮断する第3のフィルタと、を含み、
前記第1の光電変換素子と前記第2の光電変換素子との境界近傍において前記第2のフィルタ及び前記第3のフィルタの端部が前記第1のフィルタの端部を被覆しており、
前記第1の波長領域、前記第2の波長領域、および前記第3の波長領域の組み合わせ(第1の波長領域、第2の波長領域、第3の波長領域)が、PBを紫色及び青色の波長領域として、(PB、PB、UV−A)、(PB、UV−A、PB)、(UV−A、UV−A、PB)、および(UV−A、PB、UV−A)のいずれかである
半導体装置。 - 前記第1のフィルタ、前記第2のフィルタ、及び前記第3のフィルタの少なくとも1つは、屈折率が互いに異なる高屈折率膜と低屈折率膜とを交互に積層した多層膜で構成されている
請求項1に記載の半導体装置。 - 前記第3のフィルタは、前記第2のフィルタの上部に配置されると共に多層膜で構成され、かつ前記高屈折率膜及び前記低屈折率膜のいずれか一方と同じ屈折率を有すると共に前記高屈折率膜及び前記低屈折率膜よりも厚い厚膜層を備える
請求項2に記載の半導体装置。 - 前記厚膜層は、前記第3のフィルタの最上部に配置されている
請求項3に記載の半導体装置。 - 前記厚膜層は、前記低屈折率膜と同じ屈折率を有する
請求項4に記載の半導体装置。 - 前記第1の光電変換素子及び前記第2の光電変換素子の上部に形成された層間絶縁膜をさらに含み、
前記第1のフィルタは前記層間絶縁膜を介して前記第1の光電変換素子の受光面上に設けられ、
前記第2のフィルタ及び前記第3のフィルタは前記層間絶縁膜を介して前記第2の光電変換素子の受光面上に設けられた
請求項1〜請求項5のいずれか1項に記載の半導体装置。 - 前記第2のフィルタ及び前記第3のフィルタは、前記第1のフィルタを露出させる開口部を備えた
請求項1〜請求項6のいずれか1項に記載の半導体装置。 - 互いに隣接して配置されると共に各々受光した光の強度に応じた光電流を出力する第1の光電変換素子及び第2の光電変換素子を基板上に形成する工程と、
第1の波長領域の光を遮断する第1のフィルタを前記第1の光電変換素子の受光面上に形成する工程と、
第2の波長領域の光を遮断する第2のフィルタ及び第3の波長領域の光を遮断する第3のフィルタを、前記第1の光電変換素子と前記第2の光電変換素子との境界近傍において前記第2のフィルタ及び前記第3のフィルタの端部が前記第1のフィルタの端部を被覆するようにして前記第2の光電変換素子の受光面上に形成する工程と、を含み、
前記第1の波長領域、前記第2の波長領域、および前記第3の波長領域の組み合わせ(第1の波長領域、第2の波長領域、第3の波長領域)が、PBを紫色及び青色の波長領域として、(PB、PB、UV−A)、(PB、UV−A、PB)、(UV−A、UV−A、PB)、および(UV−A、PB、UV−A)のいずれかである
半導体装置の製造方法。 - 前記第2のフィルタ及び前記第3のフィルタを形成する工程は、前記第1のフィルタの端部から予め定められた距離だけ後退させてレジストによるマスクを前記第1のフィルタ上に形成する工程と、前記レジストを除去することにより行われるリフトオフ工程と、を含む
請求項8に記載の半導体装置の製造方法。
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JP2016100782A JP6767774B2 (ja) | 2016-05-19 | 2016-05-19 | 半導体装置、及び半導体装置の製造方法 |
US15/599,040 US9978783B2 (en) | 2016-05-19 | 2017-05-18 | Semiconductor device and manufacturing method of semiconductor device |
CN201710356499.3A CN107403845B (zh) | 2016-05-19 | 2017-05-19 | 半导体装置以及半导体装置的制造方法 |
US15/962,567 US10559607B2 (en) | 2016-05-19 | 2018-04-25 | Semiconductor device and manufacturing method of semiconductor device |
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