JP2023160709A - 固体撮像素子 - Google Patents
固体撮像素子 Download PDFInfo
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
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- 229910052737 gold Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
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- 229910052697 platinum Inorganic materials 0.000 description 1
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- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14643—Photodiode arrays; MOS imagers
- H01L27/14645—Colour imagers
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- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14603—Special geometry or disposition of pixel-elements, address-lines or gate-electrodes
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Abstract
Description
例えば、図14は、図13の線G-G’に沿った固体撮像素子112の一部の断面図であることができる。固体撮像素子112のいくつかの構成要素は、簡潔にするために図13および図14では省略されていることに留意されたい。
10 半導体基板
11、11B、11R 光電変換素子
13 分離構造
13S1 第1の分離セグメント
13S2 第2の分離セグメント
20 カラーフィルタ層
20SB 青色カラーフィルタセグメント
20SG 緑色カラーフィルタセグメント
20SR 赤色カラーフィルタセグメント
30 グリッド構造
32 遮光層
40、40’、40” 光分割構造
41 第1の部分
42 第2の部分
44 補助光分割構造
45 インナーピラー
50 集光構造
A-A’、B-B’、C-C’、D-D’、E-E’、F-F’、G-G’、H-H’、I-I’、J-J’、K-K’、L-L’ 線
C13S1 第1の分離セグメントの中心軸
C13S2 第2の分離セグメントの中心軸
C30 グリッド構造の中心軸
C40、C40’、C40” 光分割構造の中心軸
CS1、CS2、CS3、CS3’、CS4、CS4’、CS5、CS6、CS7、CS8、CS8’、CS9 断面図
d1、d2、d2’ 距離
L 入射光
L1、L2 光
H20 カラーフィルタ層の高さ
H30 グリッド構造の高さ
H32 遮光層の高さ
H40 光分割構造の高さ
H44 補助光分割構造の高さ
H45 インナーピラーの高さ
S1、S2、S3 シフト
W40 光分割構造の幅
W44 補助光分割構造の幅
W45 インナーピラーの幅
θ 夾角
Claims (12)
- 複数の光電変換素子と、
前記光電変換素子の上方に配置され、第1のカラーフィルタセグメントおよび前記第1のカラーフィルタセグメントに隣接した第2のカラーフィルタセグメントを有し、前記第1のカラーフィルタセグメントおよび前記第2のカラーフィルタセグメントは、異なる色に対応するカラーフィルタ層と、
前記第1のカラーフィルタセグメントまたは前記第2のカラーフィルタセグメントに配置された光分割構造と、および
前記第1のカラーフィルタセグメントと前記第2のカラーフィルタセグメントとの間に配置され、前記光分割構造がグリッド構造から分離されたグリッド構造と、を含む固体撮像素子。 - 前記複数の光電変換素子は、複数の第1の光電変換素子と複数の第2の光電変換素子に分割され、前記第1のカラーフィルタセグメントは、前記第1の光電変換素子に対応し、前記第2のカラーフィルタセグメントは、前記第2の光電変換素子に対応する請求項1に記載の固体撮像素子。
- 前記光電変換素子同士の間に配置され、複数の第1の分離セグメントおよび複数の第2の分離セグメントを有する分離構造をさらに含み、
前記第1の分離セグメントは、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間に配置され、前記第2の分離セグメントは、前記第1の光電変換素子同士の間、および前記第2の光電変換素子同士の間に配置され、前記グリッド構造は前記第1の分離セグメントに対応し、前記光分割構造は少なくとも1つの前記第2の分離セグメントに対応する請求項2に記載の固体撮像素子。 - 前記固体撮像素子の上面図からでは、前記光分割構造は、前記複数の第2の分離セグメントのうちの対応する1つと重なっている請求項3に記載の固体撮像素子。
- 前記固体撮像素子の上面図からでは、前記光分割構造の外形が十字形であるとき、前記光分割構造は、0~45度で前記複数の第2の分離セグメントのうちの対応する1つからオフセットされる請求項3に記載の固体撮像素子。
- 前記グリッド構造は、前記第1の分離セグメントに対して第1のシフトを有し、前記光分割構造は、前記複数の第2の分離セグメントのうちの対応する1つに対して第2のシフトを有し、前記第1のシフトは前記第2のシフトと異なる請求項3に記載の固体撮像素子。
- 前記光分割構造の高さは、前記グリッド構造の高さ以下であり、前記固体撮像素子の上面図からでは、前記光分割構造の外形は、円形、正方形、長方形、または、十字形である請求項1に記載の固体撮像素子。
- 前記光分割構造の幅は、50nm~200nmの間であり、前記カラーフィルタ層の高さに対する前記光分割構造の高さの比は、0.3~0.9の間である請求項1に記載の固体撮像素子。
- 前記光分割構造の屈折率は、1~1.45の間であり、前記光分割構造は、2つの光電変換素子または4つの光電変換素子に対応する請求項1に記載の固体撮像素子。
- 前記光分割構造は、前記第1のカラーフィルタセグメントまたは前記第2のカラーフィルタセグメントの中心に配置された第1の部分、および前記第1のカラーフィルタセグメントまたは前記第2のカラーフィルタセグメントの少なくとも1つの角の近くに配置された第2の部分を有する請求項1に記載の固体撮像素子。
- 前記固体撮像素子は、前記光分割構造の底部に配置され、非透過性材料を含むインナーピラーをさらに含み、
前記インナーピラーの幅は50nm~100nmの間であり、前記インナーピラーの高さは150nm未満である請求項1に記載の固体撮像素子。 - 前記光分割構造の底部に配置された補助光分割構造をさらに含み、前記補助光分割構造は、前記グリッド構造の下部にさらに配置され、前記補助光分割構造は、前記光分割構造と異なる少なくとも1つの材料を含み、前記補助光分割構造の屈折率は、1~1.65の間であり、前記補助光分割構造の幅は、前記光分割構造の幅以上であり、前記補助光分割構造の高さは、50nm~350nmの間である請求項1に記載の固体撮像素子。
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US20210118929A1 (en) * | 2019-10-17 | 2021-04-22 | SK Hynix Inc. | Image sensor |
JP2021145121A (ja) * | 2020-03-10 | 2021-09-24 | 采▲ぎょく▼科技股▲ふん▼有限公司VisEra Technologies Company Limited | 固体撮像素子 |
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US20230343808A1 (en) | 2023-10-26 |
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KR102711069B1 (ko) | 2024-09-27 |
TW202343769A (zh) | 2023-11-01 |
KR20230150175A (ko) | 2023-10-30 |
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