JP2009530871A5 - - Google Patents
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- JP2009530871A5 JP2009530871A5 JP2009501665A JP2009501665A JP2009530871A5 JP 2009530871 A5 JP2009530871 A5 JP 2009530871A5 JP 2009501665 A JP2009501665 A JP 2009501665A JP 2009501665 A JP2009501665 A JP 2009501665A JP 2009530871 A5 JP2009530871 A5 JP 2009530871A5
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- JP
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- Prior art keywords
- gas
- dielectric
- flowing
- sccm
- barrier layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910052731 fluorine Inorganic materials 0.000 claims 15
- 239000000203 mixture Substances 0.000 claims 11
- 229910052710 silicon Inorganic materials 0.000 claims 11
- 239000010703 silicon Substances 0.000 claims 11
- 238000005530 etching Methods 0.000 claims 10
- 239000011737 fluorine Substances 0.000 claims 10
- YCKRFDGAMUMZLT-UHFFFAOYSA-N fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims 10
- 229910052799 carbon Inorganic materials 0.000 claims 8
- 239000000758 substrate Substances 0.000 claims 7
- 210000002381 Plasma Anatomy 0.000 claims 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 5
- 238000000034 method Methods 0.000 claims 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- 229910052814 silicon oxide Inorganic materials 0.000 claims 2
Claims (15)
- 配線構造において誘電性バリア層をエッチングするための方法であり、
誘電性バルク絶縁層を介してその一部が露出している誘電性バリア層を有する基板をエッチングリアクタ内に配置し、誘電性バリア層は窒素ドープ炭素含有ケイ素(SiCN)フィルムであり、
少なくともH2ガスを含有するガス混合物をリアクタ内に流し、
ガス混合物から形成されるプラズマの存在下で、SiCN誘電性バリア層の露出部位を誘電性バルク絶縁層に対して選択的にエッチングすることを含む方法。 - ガス混合物を流す工程が、フッ素含有ガスをH2ガスと共にリアクタ内に流すことを含む請求項1記載の方法。
- エッチングする工程が、
処理圧力を約10mTorrから約200mTorrに維持し、
基板温度を約0℃から約50℃に制御し、
約100ワットから約800ワットのプラズマパワーを印加することを更に含む請求項1記載の方法。 - フッ素含有ガスを流す工程が、フッ素含有ガスを流量約0sccmから約80sccmで流すことを含む請求項2記載の方法。
- フッ素含有ガスがCH2F2、CHF3、CH3F、C2F6、CF4及びC3F8から成る群から選択される請求項2記載の方法。
- SiCN誘電性バリア層が5.5未満の誘電率を有しており、誘電性バルク絶縁層が4未満の誘電率を有している請求項1記載の方法。
- 誘電性バルク層が炭素含有酸化ケイ素フィルムである請求項1記載の方法。
- 露出したSiCN誘電性バリア層を除去し、
SiCN誘電性バリア層の下に配置された、基板上の下層である導電層を露出させることを含む請求項1記載の方法。 - 配線構造において誘電性バリア層をエッチングするための方法であり、
誘電性バルク絶縁層を介してその一部が露出している誘電性バリア層を有する基板をエッチングリアクタ内に配置し、誘電性バリア層が5.5未満の誘電率を有し、誘電性バリア層は窒素ドープ炭素含有ケイ素(SiCN)フィルムであり、
H2ガスとフッ素含有ガスを含有するガス混合物をリアクタ内に流し、
ガス混合物から生成されたプラズマの存在下で、SiCN誘電性バリア層の露出部位を、誘電性バルク絶縁層に対して選択的にエッチングすることを含む方法。 - ガス混合物を流す工程が、
H2ガスを流量約5sccmから約100sccmで流し、
フッ素含有ガスを流量約0sccmから約80sccmで流すことを含む請求項9記載の方法。 - ガス混合物を流す工程が、
処理圧力を約10mTorrから約200mTorrに維持し、
基板温度を約0℃から約50℃に制御し、
約100ワットから約800ワットのプラズマを印加することを含む請求項9記載の方法。 - フッ素含有ガスがCH2F2、CHF3、CH3F、C2F6、CF4及びC3F8から成る群から選択される請求項9記載の方法。
- 配線構造において誘電性バリア層をエッチングするための方法であり、
誘電性バルク絶縁層を介してその一部が露出している誘電性バリア層を有する基板をエッチングリアクタ内に配置することを含み、誘電性バリア層は窒素ドープ炭素含有ケイ素(SiCN)フィルムであり、誘電性バルク絶縁層は炭素含有酸化ケイ素フィルムであり、
H2ガス、フッ素含有ガス及び少なくとも1つのインサートガスを含有するガス混合物をリアクタ内に流し、
ガス混合物から生成されるプラズマの存在下で、誘電性層の露出部位を誘電性バルク絶縁層に対して選択的にエッチングすることを含む方法。 - ガス混合物を流す工程が、
H2ガスを流量約5sccmから約100sccmで流し、
フッ素含有ガスを流量約0sccmから約80sccmで流し、フッ素含有ガスがCH2F2、CHF3、CH3F、C2F6、CF4及びC3F8から成る群から選択され、
インサートガスを流量約50sccmから約500sccmで流し、インサートガスがAr、O2、CO、NO、N2O、He及びN2から成る群から選択される請求項13記載の方法。 - ガス混合物を流す工程が、
処理圧力を約10mTorrから約200mTorrに維持し、
基板温度を約0℃から約50℃に制御し、
約100ワットから約800ワットのプラズマを印加することを含む請求項13記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/388,246 US7977245B2 (en) | 2006-03-22 | 2006-03-22 | Methods for etching a dielectric barrier layer with high selectivity |
PCT/US2007/064141 WO2007109522A2 (en) | 2006-03-22 | 2007-03-16 | Methods for etching a dielectric barrier layer with high selectivity |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009530871A JP2009530871A (ja) | 2009-08-27 |
JP2009530871A5 true JP2009530871A5 (ja) | 2010-05-06 |
Family
ID=38523179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009501665A Pending JP2009530871A (ja) | 2006-03-22 | 2007-03-16 | 誘電性バリア層を高い選択性でエッチングする方法 |
Country Status (6)
Country | Link |
---|---|
US (2) | US7977245B2 (ja) |
EP (1) | EP2008298A2 (ja) |
JP (1) | JP2009530871A (ja) |
KR (1) | KR101083211B1 (ja) |
CN (1) | CN101405844A (ja) |
WO (1) | WO2007109522A2 (ja) |
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-
2006
- 2006-03-22 US US11/388,246 patent/US7977245B2/en not_active Expired - Fee Related
- 2006-11-30 US US11/565,050 patent/US20070224803A1/en not_active Abandoned
-
2007
- 2007-03-16 KR KR1020087023283A patent/KR101083211B1/ko not_active IP Right Cessation
- 2007-03-16 CN CNA2007800101903A patent/CN101405844A/zh active Pending
- 2007-03-16 JP JP2009501665A patent/JP2009530871A/ja active Pending
- 2007-03-16 EP EP07758668A patent/EP2008298A2/en not_active Withdrawn
- 2007-03-16 WO PCT/US2007/064141 patent/WO2007109522A2/en active Application Filing
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