JP4234019B2 - 相互接続層をリワークする方法 - Google Patents
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- JP4234019B2 JP4234019B2 JP2004003456A JP2004003456A JP4234019B2 JP 4234019 B2 JP4234019 B2 JP 4234019B2 JP 2004003456 A JP2004003456 A JP 2004003456A JP 2004003456 A JP2004003456 A JP 2004003456A JP 4234019 B2 JP4234019 B2 JP 4234019B2
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- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76807—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics for dual damascene structures
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- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
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- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
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- H01L21/76807—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics for dual damascene structures
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- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76886—Modifying permanently or temporarily the pattern or the conductivity of conductive members, e.g. formation of alloys, reduction of contact resistances
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- H01L23/525—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body with adaptable interconnections
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- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/5329—Insulating materials
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- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
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- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/10—Applying interconnections to be used for carrying current between separate components within a device
- H01L2221/1005—Formation and after-treatment of dielectrics
- H01L2221/101—Forming openings in dielectrics
- H01L2221/1015—Forming openings in dielectrics for dual damascene structures
- H01L2221/1031—Dual damascene by forming vias in the via-level dielectric prior to deposition of the trench-level dielectric
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Description
(1)論理デバイスおよび機能デバイスを含む第1セクションと、前記第1セクションの上の少なくとも1つの相互接続層と、を備える集積回路構造であって、前記相互接続層は、第1絶縁体層と、前記第1絶縁体層の上の第2絶縁体層と、前記第1絶縁体層および前記第2絶縁体層内部の電気配線と、を有し、前記第1絶縁体層は前記第2絶縁体層より低い誘電率を有する集積回路構造。
(2)前記第2絶縁体層は、前記第1絶縁体層より硬い上記(1)記載の構造。
(3)前記第2絶縁体層は、上にある相互接続層に対して実行されるリワーク工程の間前記第1絶縁体層を保護する保護層を含む上記(1)記載の構造。
(4)前記第1絶縁体層は、炭素ドープSiO2 ,多孔性SiO2 ,炭化シリコンベースの誘電体,およびポリマ誘電体のうちの1つを含む上記(1)記載の構造。
(5)前記第2絶縁体層は、窒化物,酸化物,Si3N4,TaN,Ta,およびWのうちの1つを含む上記(1)記載の構造。
(6)前記電気配線は、ダマシン銅を含む上記(1)記載の構造。
(7)前記第1絶縁体層,前記第2絶縁体層,および前記電気配線は、前記構造内部の単一の相互接続層を構成する上記(1)記載の構造。
(8)論理デバイスおよび機能デバイスを含む第1セクションと、前記第1セクションの上の複数の相互接続層と、を備える集積回路構造であって、前記相互接続層のそれぞれは、第1絶縁体層と、前記第1絶縁体層の上の第2絶縁体層と、前記第1絶縁体層および前記第2絶縁体層内部の電気配線と、を含み、前記第1絶縁体層は、前記第2絶縁体層より低い誘電率を有する集積回路構造。
(9)前記第2絶縁体層は前記第1絶縁体層よりも硬い上記(8)記載の構造。
(10)前記第2絶縁体層は、上にある相互接続層に対して実行されるリワーク工程の間前記第1絶縁体層を保護する保護層を含む上記(8)記載の構造。
(11)前記第1絶縁体層は、炭素ドープSiO2,多孔性SiO2,炭化シリコンベースの誘電体,およびポリマ誘電体のうちの1つを含む上記(8)記載の構造。
(12)前記第2絶縁体層は、窒化物,酸化物,Si3N4,TaN,Ta,Wのうちの1つを含む上記(8)記載の構造。
(13)前記電気配線はダマシン銅を含む上記(8)記載の構造。
(14)前記第1絶縁体層,前記第2絶縁体層,および前記電気配線のそれぞれのグループは、前記構造内部の単一の相互接続層を構成する上記(8)記載の構造。
(15)集積回路構造の論理層および機能層の上の相互接続層をリワークする方法であって、前記相互接続層は下部絶縁体層の上の上部絶縁体層と電気配線とを含み、前記下部絶縁体層は前記上部絶縁体層より低い誘電率を有し、前記方法は、前記相互接続層のうちの第1相互接続層の第1上部絶縁体を除去する工程と、前記第1相互接続層の直下に位置する第2相互接続層の第2上部絶縁体に影響を与えない選択的除去プロセスで、前記第1相互接続層の第1電気配線および第1下部絶縁体を除去する工程と、を含む方法。
(16)前記第2上部絶縁体は、前記第1電気配線および前記第1下部絶縁体を除去する前記プロセスの間、前記第2相互接続層の第2下部絶縁体を保護する上記(15)記載の方法。
(17)前記除去プロセスは、前記第1相互接続層を完全に除去し、前記第2相互接続層を完全な状態に残し、前記方法は、前記第1相互接続層の代わりに代替相互接続層を形成する工程をさらに含む上記(15)記載の方法。
(18)前記第1上部絶縁体を除去するプロセスは、前記第1下部絶縁体の一部も除去し、前記電気配線の一部を露出させ、前記方法は、前記第1上部絶縁体を除去するプロセスの後に、前記第1下部絶縁体の部分的に除去された部分の上と前記電気配線の露出部分の上とにポリッシュ・ストップ層を付着する工程をさらに含む上記(15)記載の方法。
(19)前記ポリッシュ・ストップ層を付着するプロセスの後に、前記電気配線を除去して、前記第1下部絶縁体の部分的に除去された部分と前記ポリッシュ・ストップ層の一部とを残す工程と、前記ポリッシュ・ストップ層を除去する工程と、をさらに含む上記(18)記載の方法。
(20)前記ポリッシュ・ストップ層は、前記電気配線を除去するプロセスの間前記第1下部絶縁体を保護する上記(19)記載の方法。
101,102,201,202,301,302,303,304 メタイライゼーション層
110,210,310,1110,1210,1310 基板
115,215,315,1115,1215,1315 配線導体
120,220,320 第1絶縁体層
125,225,325 第1ハードマスク層
130,230,330 第2絶縁体層
135,235,335 第2ハードマスク層
240 ポリッシュ・ストップ
340 第3絶縁体層
345 第3ハードマスク層
350 第1下部誘電体薄膜
355 第2下部誘電体薄膜
360 キャップ・ハードマスク材料
400,500,600,700,800,900,1000 デバイス
1100,1200 拡張バイア構造
1104,1105,1204,1301,1302,1303,1304,1305 BEOLレベル
1109,1209,1309 ライナ薄膜
1114,1214,1316 第1バイア
1116,1216,1317 第2バイア
1120,1220 第1薄膜層
1125,1225 第2薄膜層
1130,1235 第3薄膜層
1135 第4薄膜層
1240 ハードマスク材料
1300 二重スタッド相互接続構造
1318 第3バイア
1319 連結バイア
1320 第1キャップ薄膜層
1325 第1低誘電率薄膜層
1330 第2キャップ薄膜層
1335 第2低誘電率薄膜層
1340 第3キャップ薄膜層
1345 第3低誘電率薄膜層
1350 第4キャップ薄膜層
1355 第4低誘電率薄膜層
1360 第5キャップ薄膜層
1365 第5低誘電率薄膜層
Claims (4)
- 集積回路構造の論理層および機能層の上の相互接続層をリワークする方法であって、前記相互接続層は下部絶縁体層の上の上部絶縁体層と電気配線とを含み、前記下部絶縁体層は前記上部絶縁体層より低い誘電率を有し、
前記方法は、前記相互接続層のうちの第1相互接続層の第1上部絶縁体を除去する工程と、
前記第1相互接続層の直下に位置する第2相互接続層の第2上部絶縁体に影響を与えない選択的除去プロセスで、前記第1相互接続層の第1電気配線および第1下部絶縁体を除去する工程と、を含み、
前記第1上部絶縁体を除去する工程は、前記第1下部絶縁体の一部も第1電気配線の深さの直下の深さまで除去し、前記第1電気配線の一部を突出させ、
前記方法は、前記第1上部絶縁体を除去する工程の後に、前記第1下部絶縁体の露出部分の上と前記第1電気配線の突出部分の上とにポリッシュ・ストップ層を付着する工程を含み、
前記ポリッシュ・ストップ層を付着する工程の後に、
前記ポリッシュ・ストップ層を研磨停止層として、前記第1電気配線を研磨により除去して、前記第1下部絶縁体の露出部分と前記ポリッシュ・ストップ層の一部とを残す工程と、
前記ポリッシュ・ストップ層を除去する工程と、を含む
方法。 - 前記第2上部絶縁体は、前記第1電気配線および前記第1下部絶縁体を除去する工程の間、前記第2相互接続層の第2下部絶縁体を保護する請求項1記載の方法。
- 前記第1電気配線および第1下部絶縁体を除去する工程は、前記第1相互接続層を完全に除去し、前記第2相互接続層を完全な状態に残し、前記方法は、前記第1相互接続層の代わりに代替相互接続層を形成する工程をさらに含む請求項1記載の方法。
- 前記ポリッシュ・ストップ層は、前記第1電気配線を研磨により除去する間、前記第1下部絶縁体を保護する請求項1記載の方法。
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US10/248,452 US6674168B1 (en) | 2003-01-21 | 2003-01-21 | Single and multilevel rework |
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JP4234019B2 true JP4234019B2 (ja) | 2009-03-04 |
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US6812131B1 (en) * | 2000-04-11 | 2004-11-02 | Honeywell International Inc. | Use of sacrificial inorganic dielectrics for dual damascene processes utilizing organic intermetal dielectrics |
US6350675B1 (en) * | 2000-10-12 | 2002-02-26 | Chartered Semiconductor Manufacturing Ltd. | Integration of silicon-rich material in the self-aligned via approach of dual damascene interconnects |
US20020064951A1 (en) * | 2000-11-30 | 2002-05-30 | Eissa Mona M. | Treatment of low-k dielectric films to enable patterning of deep submicron features |
US6495443B1 (en) * | 2001-06-05 | 2002-12-17 | Advanced Micro Devices, Inc. | Method of re-working copper damascene wafers |
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2003
- 2003-01-21 US US10/248,452 patent/US6674168B1/en not_active Expired - Fee Related
- 2003-10-16 US US10/687,294 patent/US6982227B2/en not_active Expired - Fee Related
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2004
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US20040142565A1 (en) | 2004-07-22 |
JP2004228569A (ja) | 2004-08-12 |
US6982227B2 (en) | 2006-01-03 |
US6674168B1 (en) | 2004-01-06 |
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