JP7431831B2 - 半導体素子を基板にボンディングする方法、および関連ボンディングシステム - Google Patents
半導体素子を基板にボンディングする方法、および関連ボンディングシステム Download PDFInfo
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- JP7431831B2 JP7431831B2 JP2021539572A JP2021539572A JP7431831B2 JP 7431831 B2 JP7431831 B2 JP 7431831B2 JP 2021539572 A JP2021539572 A JP 2021539572A JP 2021539572 A JP2021539572 A JP 2021539572A JP 7431831 B2 JP7431831 B2 JP 7431831B2
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- 239000004065 semiconductor Substances 0.000 title claims description 146
- 238000000034 method Methods 0.000 title claims description 73
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- 239000000463 material Substances 0.000 claims description 52
- 230000002265 prevention Effects 0.000 claims description 49
- 230000009467 reduction Effects 0.000 claims description 45
- 229910000679 solder Inorganic materials 0.000 claims description 43
- 239000012298 atmosphere Substances 0.000 claims description 35
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 239000012159 carrier gas Substances 0.000 claims description 11
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 7
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 5
- 235000019253 formic acid Nutrition 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 28
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
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- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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- H01L2224/81053—Bonding environment
- H01L2224/81054—Composition of the atmosphere
- H01L2224/81065—Composition of the atmosphere being reducing
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- H01L2224/8119—Arrangement of the bump connectors prior to mounting
- H01L2224/81193—Arrangement of the bump connectors prior to mounting wherein the bump connectors are disposed on both the semiconductor or solid-state body and another item or body to be connected to the semiconductor or solid-state body
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- H01L2224/812—Applying energy for connecting
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- H01L24/10—Bump connectors ; Manufacturing methods related thereto
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- H01L24/10—Bump connectors ; Manufacturing methods related thereto
- H01L24/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L24/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
Description
本出願は、2019年1月9日付で出願した米国特許仮出願第62/790,259号および2019年9月28日付で出願した米国特許仮出願第62/907,562号に対して利益を主張するものであり、その内容の全体がこの参照により本明細書に組み込まれる。
この出願の発明に関連する先行技術文献情報としては、以下のものがある(国際出願日以降国際段階で引用された文献及び他国に国内移行した際に引用された文献を含む)。
(先行技術文献)
(特許文献)
(特許文献1) 米国特許出願公開第2002/0130164号明細書
(特許文献2) 米国特許出願公開第2015/0048523号明細書
(特許文献3) 特開2013-251404号公報
(特許文献4) 韓国公開特許第10-2013-0083400号公報
(特許文献5) 米国特許出願公開第2011/0045653号明細書
Claims (46)
- 半導体素子を基板にボンディングするためのボンディングシステムであって、
複数の第1の導電性構造を含む基板を受け取るように構成された基板酸化物還元チャンバーであって、前記複数の第1の導電性構造の各々に接触する還元ガスを受け取るように構成されているものである、前記基板酸化物還元チャンバーと、
前記複数の第1の導電性構造に前記還元ガスが接触した後前記基板を受け取るように構成された基板酸化物防止チャンバーであって、前記基板を受け取る際に不活性雰囲気を有するものである、前記基板酸化物防止チャンバーと、
複数の第2の導電性構造を含む半導体素子を前記基板にボンディングする間に還元ガス雰囲気を供給する還元ガス送達システムであって、前記複数の第1の導電性構造の各々は、対応する前記複数の第2の導電性構造にボンディングされるように構成されているものである、前記還元ガス送達システムと、
前記半導体素子を前記基板にボンディングするボンディングツールを含むボンドヘッドであって、前記還元ガス送達システムは当該ボンドヘッドに一体化されているものである、前記ボンドヘッドと
を有する、ボンディングシステム。 - 請求項1記載のボンディングシステムにおいて、さらに、
前記基板を前記基板酸化物還元チャンバーから前記基板酸化物防止チャンバーに移送する基板移送システムを有するものである、ボンディングシステム。 - 請求項1記載のボンディングシステムにおいて、前記基板酸化物防止チャンバーは、不活性雰囲気を生成するために窒素が供給されているものである、ボンディングシステム。
- 請求項1記載のボンディングシステムにおいて、さらに、
前記基板を前記基板酸化物防止チャンバー内に移動させるマテリアルハンドリングシステムを有するものである、ボンディングシステム。 - 請求項1記載のボンディングシステムにおいて、前記基板酸化物防止チャンバーは、前記半導体素子を前記基板にボンディングする際に前記基板を受け取るためのボンディング位置を含むものである、ボンディングシステム。
- 請求項1記載のボンディングシステムにおいて、前記半導体素子は半導体ダイである、ボンディングシステム。
- 請求項6記載のボンディングシステムにおいて、前記基板は半導体ウェハである、ボンディングシステム。
- 請求項1記載のボンディングシステムにおいて、前記基板は、前記基板酸化物防止チャンバーにより受け取られた後、前記基板酸化物還元チャンバーに返送されるものである、ボンディングシステム。
- 請求項1記載のボンディングシステムにおいて、前記基板酸化物還元チャンバーの少なくとも一部分は前記基板酸化物防止チャンバーと共通の境界を有するものである、ボンディングシステム。
- 請求項1記載のボンディングシステムにおいて、前記基板酸化物還元チャンバーは、前記基板が前記基板酸化物防止チャンバーに移動された後、別の基板を受け取るように構成されているものである、ボンディングシステム。
- 半導体素子を基板にボンディングする方法であって、
複数の第1の導電性構造を含む基板を基板酸化物還元チャンバー内に移動する工程であって、前記基板酸化物還元チャンバーは前記複数の第1の導電性構造の各々に接触する還元ガスを受け取るように構成されているものである、前記基板酸化物還元チャンバー内に移動する工程と、
前記複数の第1の導電性構造に前記還元ガスが接触した後前記基板を基板酸化物防止チャンバー内に移動する工程であって、前記基板酸化物防止チャンバーは前記基板を受け取る際に不活性雰囲気を有するものである、前記基板酸化物防止チャンバー内に移動する工程と、
複数の第2の導電性構造を含む半導体素子を前記基板にボンディングする工程中にボンドヘッドに一体化された還元ガス送達システムによって還元ガス雰囲気を供給する工程であって、
前記ボンドヘッドは、前記半導体素子を前記基板にボンディングするボンディングツールを含むものであり、
前記複数の第1の導電性構造の各々は、対応する前記複数の第2の導電性構造にボンディングされるように構成されているものである、
前記還元ガス雰囲気を供給する工程と
を有する、方法。 - 半導体素子を基板にボンディングする方法であって、
(a)複数の第1の導電性構造を含む半導体素子をボンディング装置のボンディングツールによって保持する工程と、
(b)複数の第2の導電性構造を含む基板を前記ボンディング装置の支持構造によって支持する工程と、
(c)前記複数の第1の導電性構造および前記複数の第2の導電性構造の各々と接触する還元ガスを供給する工程と、
(d)前記工程(c)の後、前記複数の第1の導電性構造の各々を対応する前記複数の第2の導電性構造にボンディングする工程と
を有し、
前記複数の第1の導電性構造および前記複数の第2の導電性構造のうちの少なくとも1つは、はんだ材料を含むものであり、
前記ボンディングツールは前記ボンディング装置のボンドヘッドによって保持されるものであり、
前記工程(c)は、前記ボンドヘッドに一体化された多岐管により、前記複数の第1の導電性構造および前記複数の第2の導電性構造の各々と接触する還元ガスを供給する工程を含むものである、
方法。 - 請求項12記載の方法において、前記複数の第1の導電性構造および前記複数の第2の導電性構造の各々は、はんだ材料を含むものである、方法。
- 請求項12記載の方法において、前記複数の第1の導電性構造および前記複数の第2の導電性構造のうちの少なくとも1つは、接触部においてはんだ材料を含むものである、方法。
- 請求項12記載の方法において、前記複数の第1の導電性構造は、接触部においてはんだ材料を含むものである、方法。
- 請求項12記載の方法において、前記複数の第2の導電性構造は、接触部においてはんだ材料を含むものである、方法。
- 請求項12記載の方法において、前記複数の第1の導電性構造および前記複数の第2の導電性構造の双方は、接触部においてはんだ材料を含むものである、方法。
- 請求項12記載の方法において、前記複数の第1の導電性構造および前記複数の第2の導電性構造のうちの少なくとも1つは、はんだ材料により形成されているものである、方法。
- 請求項12記載の方法において、前記複数の第1の導電性構造は、はんだ材料により形成されているものである、方法。
- 請求項12記載の方法において、前記複数の第2の導電性構造は、はんだ材料により形成されているものである、方法。
- 請求項12記載の方法において、前記複数の第1の導電性構造および前記複数の第2の導電性構造の双方は、はんだ材料により形成されているものである、方法。
- 請求項12記載の方法において、前記還元ガスは、キャリアガスと、酸とを含むものである、方法。
- 請求項22記載の方法において、前記酸は、ギ酸および酢酸のうちの1つを含むものである、方法。
- 請求項12記載の方法において、前記還元ガスは、前記ボンディング装置に備えられた蒸気生成システムにより供給される飽和蒸気ガスである、方法。
- 請求項12記載の方法において、前記工程(d)は、前記半導体素子と前記基板との間に超音波エネルギーを適用する工程を含むものである、方法。
- 請求項12記載の方法において、前記工程(d)は、熱圧着式ボンディングにより前記複数の第1の導電性構造の各々を対応する前記複数の第2の導電性構造にボンディングする工程を含むものである、方法。
- 半導体素子を基板にボンディングするためのボンディングシステムであって、前記基板は複数の第1の導電性構造を含むものであり、前記ボンディングシステムは、
前記基板を受け取るように構成された基板酸化物防止チャンバーであって、前記基板を受け取る際に不活性雰囲気を有するものである、前記基板酸化物防止チャンバーと、
複数の第2の導電性構造を含む半導体素子を前記基板にボンディングする間に還元ガス雰囲気を供給する還元ガス送達システムであって、前記複数の第1の導電性構造の各々は、対応する前記複数の第2の導電性構造にボンディングされるように構成されているものである、前記還元ガス送達システムと、
前記半導体素子を前記基板にボンディングするボンディングツールを含むボンドヘッドであって、前記還元ガス送達システムは当該ボンドヘッドに一体化されているものである、前記ボンドヘッドと
を有する、ボンディングシステム。 - 請求項27記載のボンディングシステムにおいて、さらに、
前記基板を前記基板酸化物防止チャンバーに移送する基板移送システムを有するものである、ボンディングシステム。 - 請求項27記載のボンディングシステムにおいて、前記基板酸化物防止チャンバーは、不活性雰囲気を生成するために窒素が供給されているものである、ボンディングシステム。
- 請求項27記載のボンディングシステムにおいて、さらに、
前記基板を前記基板酸化物防止チャンバー内に移動させるマテリアルハンドリングシステムを有するものである、ボンディングシステム。 - 請求項27記載のボンディングシステムにおいて、前記基板酸化物防止チャンバーは、前記半導体素子を前記基板にボンディングする際に前記基板を受け取るためのボンディング位置を含むものである、ボンディングシステム。
- 請求項27記載のボンディングシステムにおいて、前記半導体素子は半導体ダイである、ボンディングシステム。
- 請求項32記載のボンディングシステムにおいて、前記基板は半導体ウェハである、ボンディングシステム。
- 半導体素子を基板にボンディングする方法であって、前記基板は複数の第1の導電性構造を含むものであり、前記方法は、
前記基板を基板酸化物防止チャンバー内に移動する工程であって、前記基板酸化物防止チャンバーは前記基板を受け取る際に不活性雰囲気を有するものである、前記基板酸化物防止チャンバー内に移動する工程と、
複数の第2の導電性構造を含む半導体素子を前記基板にボンディングする工程中にボンドヘッドに一体化された還元ガス送達システムによって還元ガス雰囲気を供給する工程であって、
前記ボンドヘッドは、前記半導体素子を前記基板にボンディングするボンディングツールを含むものであり、
前記複数の第1の導電性構造の各々は、対応する前記複数の第2の導電性構造にボンディングされるように構成されているものである、
前記還元ガス雰囲気を供給する工程と
を有する、方法。 - 半導体素子を基板にボンディングするためのボンディングシステムであって、
複数の第1の導電性構造を含む基板を受け取るように構成された基板酸化物還元チャンバーであって、前記複数の第1の導電性構造の各々に接触する還元ガスを受け取るように構成されているものである、前記基板酸化物還元チャンバーと、
前記複数の第1の導電性構造に前記還元ガスが接触した後前記基板を受け取るように構成された基板酸化物防止チャンバーであって、前記基板を受け取る際に不活性雰囲気を有するものである、前記基板酸化物防止チャンバーと、
複数の第2の導電性構造を含む半導体素子を前記基板にボンディングする間に還元ガス雰囲気を供給する還元ガス送達システムであって、前記複数の第1の導電性構造の各々は、対応する前記複数の第2の導電性構造にボンディングされるように構成されているものである、前記還元ガス送達システムと、
を有し、
前記基板は、前記基板酸化物防止チャンバーにより受け取られた後、前記基板酸化物還元チャンバーに返送されるものである、
ボンディングシステム。 - 請求項35記載のボンディングシステムにおいて、さらに、
前記基板を前記基板酸化物還元チャンバーから前記基板酸化物防止チャンバーに移送する基板移送システムを有するものである、ボンディングシステム。 - 請求項35記載のボンディングシステムにおいて、前記基板酸化物防止チャンバーは、不活性雰囲気を生成するために窒素が供給されているものである、ボンディングシステム。
- 請求項35記載のボンディングシステムにおいて、さらに、
前記基板を前記基板酸化物防止チャンバー内に移動させるマテリアルハンドリングシステムを有するものである、ボンディングシステム。 - 請求項35記載のボンディングシステムにおいて、前記基板酸化物防止チャンバーは、前記半導体素子を前記基板にボンディングする際に前記基板を受け取るためのボンディング位置を含むものである、ボンディングシステム。
- 請求項35記載のボンディングシステムにおいて、さらに、
前記半導体素子を前記基板にボンディングするボンディングツールを含むボンドヘッドを有し、前記還元ガス送達システムは当該ボンドヘッドに一体化されているものである、ボンディングシステム。 - 請求項35記載のボンディングシステムにおいて、さらに、
前記半導体素子を前記基板にボンディングする際に前記基板を支持する基板支持構造を有し、前記還元ガス送達システムは当該基板支持構造に一体化されているものである、ボンディングシステム。 - 請求項35記載のボンディングシステムにおいて、前記半導体素子は半導体ダイである、ボンディングシステム。
- 請求項42記載のボンディングシステムにおいて、前記基板は半導体ウェハである、ボンディングシステム。
- 請求項35記載のボンディングシステムにおいて、前記基板酸化物還元チャンバーの少なくとも一部分は前記基板酸化物防止チャンバーと共通の境界を有するものである、ボンディングシステム。
- 請求項35記載のボンディングシステムにおいて、前記基板酸化物還元チャンバーは、前記基板が前記基板酸化物防止チャンバーに移動された後、別の基板を受け取るように構成されているものである、ボンディングシステム。
- 半導体素子を基板にボンディングする方法であって、
複数の第1の導電性構造を含む基板を基板酸化物還元チャンバー内に移動する工程であって、前記基板酸化物還元チャンバーは前記複数の第1の導電性構造の各々に接触する還元ガスを受け取るように構成されているものである、前記基板酸化物還元チャンバー内に移動する工程と、
前記複数の第1の導電性構造に前記還元ガスが接触した後前記基板を基板酸化物防止チャンバー内に移動する工程であって、
前記基板酸化物防止チャンバーは前記基板を受け取る際に不活性雰囲気を有するものであり、
前記基板は、前記基板酸化物防止チャンバーにより受け取られた後、前記基板酸化物還元チャンバーに返送されるものである、
前記基板酸化物防止チャンバー内に移動する工程と、
複数の第2の導電性構造を含む半導体素子を前記基板にボンディングする工程中に還元ガス雰囲気を供給する工程であって、前記複数の第1の導電性構造の各々は、対応する前記複数の第2の導電性構造にボンディングされるように構成されているものである、前記還元ガス雰囲気を供給する工程と
を有する、方法。
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