JP7458449B2 - 固体撮像素子 - Google Patents
固体撮像素子 Download PDFInfo
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- JP7458449B2 JP7458449B2 JP2022126968A JP2022126968A JP7458449B2 JP 7458449 B2 JP7458449 B2 JP 7458449B2 JP 2022126968 A JP2022126968 A JP 2022126968A JP 2022126968 A JP2022126968 A JP 2022126968A JP 7458449 B2 JP7458449 B2 JP 7458449B2
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- 238000006243 chemical reaction Methods 0.000 claims description 92
- 238000003384 imaging method Methods 0.000 claims description 84
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000011241 protective layer Substances 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 description 15
- 239000004065 semiconductor Substances 0.000 description 11
- 239000000758 substrate Substances 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 239000011651 chromium Substances 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 238000005240 physical vapour deposition Methods 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 238000005137 deposition process Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
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- 238000009792 diffusion process Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
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- H01L27/144—Devices controlled by radiation
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- H01L27/144—Devices controlled by radiation
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- H01L27/14603—Special geometry or disposition of pixel-elements, address-lines or gate-electrodes
- H01L27/14605—Structural or functional details relating to the position of the pixel elements, e.g. smaller pixel elements in the center of the imager compared to pixel elements at the periphery
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- H01L27/14643—Photodiode arrays; MOS imagers
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- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
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- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
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- H01L27/1463—Pixel isolation structures
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Solid State Image Pick-Up Elements (AREA)
Description
10 半導体基板
11 電変換ユニット
13 分離構造
15、15-1、15-2、15-3 変調構造
20 保護層
22 金属グリッド
22S 金属グリッドセグメント
30 集光構造
40 反射層
C13 分離構造の中心軸
C22 金属グリッドセグメントの中心軸
MP、MP1、MP2 モザイクパターン
RL 反射光
W11 光電変換ユニットの幅
W15 変調構造の幅
T15 変調構造の厚さ
TL 透過光
A-A’、B-B’、C-C’ 線
X、Y、Z 座標軸
Claims (13)
- 複数の光電変換ユニット、
前記複数の光電変換ユニットの間に配置された分離構造、
前記分離構造から横に延伸するように、各前記複数の光電変換ユニットの所定の深さに埋め込まれ、入射光の光路が長くなるように、入射光の光路を変える変調構造、および
前記複数の光電変換ユニットの上に配置された保護層を含む固体撮像素子であって、
前記固体撮像素子の上面からは、前記複数の光電変換ユニットと前記変調構造はモザイクパターンを形成しており、前記変調構造の1つの面積と前記モザイクパターンの対応する1つの面積との比は、約0.1~約0.9の間である固体撮像素子。 - 前記変調構造の屈折率は、前記複数の光電変換ユニットの屈折率と異なり、前記固体撮像素子の上面からは、前記変調構造がアレイを形成している請求項1に記載の固体撮像素子。
- 前記変調構造は、前記複数の光電変換ユニットの上部または底部に配置される請求項1に記載の固体撮像素子。
- 前記変調構造の厚さは、m×λ/2nに等しく、mは正の整数であり、λは感知される光の波長であり、nは前記変調構造の屈折率である請求項1に記載の固体撮像素子。
- 前記固体撮像素子の上面からは、前記変調構造は周期的な配置にある請求項1に記載の固体撮像素子。
- 前記固体撮像素子の上面からは、前記変調構造は非周期的な構造を形成している請求項1に記載の固体撮像素子。
- 前記固体撮像素子の上面からは、前記変調構造の形状は、三角形、長方形、正方形、または台形を含み、前記変調構造は、少なくとも2つの異なる形状を有しているか、または前記変調構造は、2つの隣接する前記モザイクパターンで異なる形状を有している請求項1に記載の固体撮像素子。
- 前記固体撮像素子の上面からは、前記モザイクパターンは碁盤格子のようなパターンを形成している請求項1に記載の固体撮像素子。
- 前記固体撮像素子の上面からは、前記変調構造は、複数のクロスパターンを形成している請求項1に記載の固体撮像素子。
- 前記固体撮像素子の上面からは、前記変調構造は、少なくとも2つの異なる形状を有している請求項1に記載の固体撮像素子。
- 前記固体撮像素子の上面からは、前記複数の光電変換ユニットの前記変調構造は互いに同じ方向に延在しているか、または前記複数の光電変換ユニットの前記変調構造は、互いに垂直になる方向に延在している請求項1に記載の固体撮像素子。
- 前記固体撮像素子の上面からは、前記変調構造の1つの面積と前記モザイクパターンの対応する1つの面積との比は、約0.5であるか、または前記変調構造の1つの面積と前記モザイクパターンの対応する1つの面積との比は変えられる請求項1に記載の固体撮像素子。
- 前記保護層の底部に配置され、前記分離構造に対応する金属グリッド、
前記保護層の上に配置され、それぞれが前記複数の光電変換ユニットの1つに対応する集光構造、および
前記複数の光電変換ユニットの下に配置された反射層をさらに含む請求項1に記載の固体撮像素子。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US17/679,708 | 2022-02-24 | ||
US17/679,708 US20230268364A1 (en) | 2022-02-24 | 2022-02-24 | Solid-state image sensor |
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JP2023123331A JP2023123331A (ja) | 2023-09-05 |
JP7458449B2 true JP7458449B2 (ja) | 2024-03-29 |
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US (1) | US20230268364A1 (ja) |
JP (1) | JP7458449B2 (ja) |
CN (1) | CN116705807A (ja) |
TW (1) | TWI837705B (ja) |
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2022
- 2022-02-24 US US17/679,708 patent/US20230268364A1/en active Pending
- 2022-06-16 TW TW111122418A patent/TWI837705B/zh active
- 2022-07-15 CN CN202210835716.8A patent/CN116705807A/zh active Pending
- 2022-08-09 JP JP2022126968A patent/JP7458449B2/ja active Active
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