JP2006294751A - 半導体集積回路及びその製造方法 - Google Patents
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 238000009792 diffusion process Methods 0.000 claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims description 76
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 description 30
- 229920002120 photoresistant polymer Polymers 0.000 description 20
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- 230000007547 defect Effects 0.000 description 8
- 229910052581 Si3N4 Inorganic materials 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
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- 238000002955 isolation Methods 0.000 description 5
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- 238000010586 diagram Methods 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000000206 photolithography Methods 0.000 description 4
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- 238000000137 annealing Methods 0.000 description 3
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- 229910052736 halogen Inorganic materials 0.000 description 3
- 238000005468 ion implantation Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000004151 rapid thermal annealing Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
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- 238000005229 chemical vapour deposition Methods 0.000 description 2
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- 239000011574 phosphorus Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- -1 tungsten halogen Chemical class 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
- PEUPIGGLJVUNEU-UHFFFAOYSA-N nickel silicon Chemical compound [Si].[Ni] PEUPIGGLJVUNEU-UHFFFAOYSA-N 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】 矩形の低速回路領域12に配置され、第1の拡散領域をソースイクステンション領域及びドレインイクステンション領域とする低速トランジスタにより構成される低速回路120と、低速回路領域12に隣接する矩形の高速回路領域11に配置され、第1の拡散領域より厚さが薄い第2の拡散領域をソースイクステンション領域及びドレインイクステンション領域とする高速トランジスタにより構成される高速回路110とを備える。
【選択図】 図1
Description
既に述べた実施の形態の説明においては、低速回路領域12に形成される低速トランジスタQbのソースイクステンション領域62b及びドレインイクステンション領域63bを、RTA等の熱処理を用いて形成する例を説明した。しかし、低速トランジスタQbのソースイクステンション領域62b及びドレインイクステンション領域63bをラインスキャン型熱処理装置を用いて形成してもよい。つまり、回路に要求されるスイッチング速度及びリーク電流の大きさ等に応じてラインスキャン型熱処理装置の設定を変更して、高温レーザ熱処理が行われる。例えば、高速回路領域11を熱処理する場合よりもレーザ光の出力を小さく設定して、低速回路領域12を熱処理する。このとき、レーザ光の出力は、低速回路領域12に配置されたDRAM121に許容値以上のリーク電流が発生しない条件に設定される。又、レーザ光によって照射される領域の幅は、低速回路領域12の幅W2に合わせて調整される。
本発明の実施の形態の第2の変形例に係る半導体集積回路は、図14に示すように、矩形の高速回路領域11、高速回路領域11に隣接した矩形の低速回路領域12、及び高速回路領域11に隣接した矩形の中速回路領域13に配置される。つまり、中速回路領域13を更に備える点が図1と異なる。
上記のように、本発明は実施の形態によって記載したが、この開示の一部をなす論述及び図面はこの発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施の形態、実施例及び運用技術が明らかとなろう。
11…高速回路領域
12…低速回路領域
60a、60b…ソース領域
61a、61b…ドレイン領域
62a、62b…ソースイクステンション領域
63a、63b…ドレインイクステンション領域
110…高速回路
120…低速回路
Claims (5)
- 矩形の低速回路領域に配置され、第1の拡散領域をソースイクステンション領域及びドレインイクステンション領域とする低速トランジスタにより構成される低速回路と、
前記低速回路領域に隣接する矩形の高速回路領域に配置され、前記第1の拡散領域より厚さが薄い第2の拡散領域をソースイクステンション領域及びドレインイクステンション領域とする高速トランジスタにより構成される高速回路
とを備えることを特徴とする半導体集積回路。 - 第1の熱処理条件で、矩形の低速回路領域に配置された低速回路を構成する低速トランジスタのソースイクステンション領域及びドレインイクステンション領域を含む第1の拡散領域を形成するステップと、
レーザ光を照射して、前記第1の熱処理条件より高温且つ短時間の第2の熱処理条件で、前記低速回路領域に隣接する矩形の高速回路領域に配置された高速回路を構成する高速トランジスタのソースイクステンション領域及びドレインイクステンション領域を含む第2の拡散領域を、前記第1の拡散領域より厚さを薄く形成するステップ
とを含むことを特徴とする半導体集積回路の製造方法。 - 前記高速回路領域の形状に基づき、前記レーザ光によって照射される領域の幅を調整することを特徴とする請求項2に記載の半導体集積回路の製造方法。
- 前記レーザ光の出力より低い出力のレーザ光を照射して、前記第1の拡散領域を形成することを特徴とする請求項2又は3に記載の半導体集積回路の製造方法。
- 前記第1の拡散領域が形成された後に、前記第2の拡散領域を形成することを特徴とする請求項2乃至4のいずれか1項に記載の半導体集積回路の製造方法。
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JP2005111195A JP2006294751A (ja) | 2005-04-07 | 2005-04-07 | 半導体集積回路及びその製造方法 |
US11/220,716 US7768094B2 (en) | 2005-04-07 | 2005-09-08 | Semiconductor integrated circuit and wafer having diffusion regions differing in thickness and method for manufacturing the same |
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US7768094B2 (en) | 2010-08-03 |
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