JP5898690B2 - 電気−機械システムを製造するためのプロセス - Google Patents
電気−機械システムを製造するためのプロセス Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 57
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 230000008569 process Effects 0.000 title description 28
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 66
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 65
- 239000000758 substrate Substances 0.000 claims description 38
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 21
- -1 ammonium hexafluorosilicic acid Chemical compound 0.000 claims description 19
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 238000000859 sublimation Methods 0.000 claims description 15
- 230000008022 sublimation Effects 0.000 claims description 15
- 238000000151 deposition Methods 0.000 claims description 14
- LXPCOISGJFXEJE-UHFFFAOYSA-N oxifentorex Chemical compound C=1C=CC=CC=1C[N+](C)([O-])C(C)CC1=CC=CC=C1 LXPCOISGJFXEJE-UHFFFAOYSA-N 0.000 claims description 8
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000012808 vapor phase Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- 239000010937 tungsten Substances 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910000577 Silicon-germanium Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 3
- 229910001080 W alloy Inorganic materials 0.000 claims description 3
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 claims description 3
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 3
- 229920005591 polysilicon Polymers 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000004518 low pressure chemical vapour deposition Methods 0.000 claims 3
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 claims 3
- 239000012071 phase Substances 0.000 claims 2
- 238000005530 etching Methods 0.000 description 23
- 238000005092 sublimation method Methods 0.000 description 15
- 150000004767 nitrides Chemical class 0.000 description 11
- 238000000059 patterning Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 8
- 230000008021 deposition Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 4
- 238000001039 wet etching Methods 0.000 description 3
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- AJROUILWTHWZFO-UHFFFAOYSA-N [F-].[NH4+].[Si] Chemical compound [F-].[NH4+].[Si] AJROUILWTHWZFO-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- GYQWAOSGJGFWAE-UHFFFAOYSA-N azane tetrafluorosilane Chemical compound N.[Si](F)(F)(F)F GYQWAOSGJGFWAE-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000001153 fluoro group Chemical class F* 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
- B81C1/00436—Shaping materials, i.e. techniques for structuring the substrate or the layers on the substrate
- B81C1/00523—Etching material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
- B81C1/00912—Treatments or methods for avoiding stiction of flexible or moving parts of MEMS
- B81C1/0092—For avoiding stiction during the manufacturing process of the device, e.g. during wet etching
- B81C1/00936—Releasing the movable structure without liquid etchant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B7/00—Microstructural systems; Auxiliary parts of microstructural devices or systems
- B81B7/02—Microstructural systems; Auxiliary parts of microstructural devices or systems containing distinct electrical or optical devices of particular relevance for their function, e.g. microelectro-mechanical systems [MEMS]
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Computer Hardware Design (AREA)
- Inorganic Chemistry (AREA)
- Micromachines (AREA)
Description
(NH4)2SiF6→NH4HF2(固)+SiF4(気)+NH3(気)
にしたがって昇華し得ることである。
11,13,15 窒化シリコン層
12 犠牲酸化物層
14 デバイス層
16 アンカー
17 アンモニウムヘキサフルオロケイ酸
18 エッチ穴
Claims (11)
- 機械素子及び基板を備える微小電気機械システム(MEMS)またはナノ電気機械システム(NEMS)を製造する方法において、
(a)前記機械素子と前記基板の間に犠牲酸化シリコンの層を被着する工程、
(b)窒化シリコンの層を、
(i) 前記基板と前記犠牲酸化シリコンの層の間、
(ii) 前記犠牲酸化シリコンの層と前記素子の間、及び
(iii)前記素子の上、
からなる群から選ばれる1つ以上の場所に設ける工程、
(c)気相フッ化水素(VHF)を、
(i) 前記犠牲酸化シリコンの少なくとも一部分が除去され、かつ同時に、
(ii) 素子の動きを制限する一時的な支持体、シム、くさびまたは繋索を設けるために、前記窒化シリコンの少なくとも一部分がアンモニウムヘキサフルオロケイ酸に転換される条件の下で、導入する工程、及び
(d)液体形成を避ける圧力と温度の条件の下で前記アンモニウムヘキサフルオロケイ酸を昇華させる工程、
を含み、
前記一時的なアンモニウムヘキサフルオロケイ酸の支持体、シム、くさびまたは繋索が1つ以上の中間工程が実施された後になるまで昇華によって除去されず、よって前記1つ以上の中間工程中の動きが防止され、前記中間工程はダイシング、パッケージング及びメタライジングから選ばれることを特徴とする方法。 - 前記素子が、アモルフォスシリコン、ポリシリコン、シリコン−ゲルマニウム、アルミニウム、タングステン、チタン、窒化チタン、アルミニウム、タングステン及びチタンの合金、これらの組合せ、及び金属−酸化シリコン積層からなる群から選ばれることを特徴とする請求項1に記載の方法。
- 前記気相フッ化水素(VHF)がフッ化水素酸及びアルコールまたは水を含むことを特徴とする請求項1または2に記載の方法。
- 前記素子、前記基板、前記酸化シリコン及び前記窒化シリコンが、前記MEMSまたは前記NEMSの作製中に層として設けられ、前記窒化シリコンの層が前記素子の層の両側に設けられることを特徴とする請求項1〜3のいずれか1項に記載の方法。
- 前記素子、前記基板、前記酸化シリコン及び前記窒化シリコンが、前記MEMSまたは前記NEMSの作製中に層として設けられ、前記窒化シリコンの層の第1の層が前記基板の層の前記素子の層に向いている側の上に設けられ、前記窒化シリコンの層の第2の層が前記素子の層の前記基板の層に向いている側の上に設けられ、前記酸化シリコンの層が前記第1の層と前記第2の層の間に設けられることを特徴とする請求項1〜3のいずれか1項に記載の方法。
- 前記素子、前記基板、前記酸化シリコン及び前記窒化シリコンが、前記MEMSまたは前記NEMSの作製中に層として設けられ、前記素子の層が互いに対してまたは前記基板に対して動くように設計された領域を有し、前記窒化シリコンの層が作成中の前記領域の互いに対する動きを制限するための繋索の形態で設けられ、前記窒化シリコンの層の繋索は、前記領域の互いに対する動きが許される時点で昇華によって除去されることを特徴とする請求項1〜3のいずれか1項に記載の方法。
- 前記犠牲酸化シリコンの一部が除去されず、アンカーとしてはたらくことを特徴とする請求項1に記載の方法。
- 前記窒化シリコンが、プラズマ支援化学的気相成長(PECVD)によるかまたは減圧化学的気相成長(LPCVD)によって作製され、前記PECVDによって作製された前記窒化シリコンが前記LPCVDによって作製された前記窒化シリコンより高速で反応することを特徴とする請求項1に記載の方法。
- 前記窒化シリコンの少なくとも一部分をアンモニウムヘキサフルオロケイ酸に転換すると、そのように形成された前記アンモニウムヘキサフルオロケイ酸が前記窒化シリコンの前記部分より大きな体積を有することを特徴とする請求項1に記載の方法。
- 前記窒化シリコンと前記気相フッ化水素(VHF)の反応によって形成された前記アンモニウムヘキサフルオロケイ酸の量及び場所が前記窒化シリコンの場所、厚さ及び品質の選択によって制御されることを特徴とする請求項1に記載の方法。
- 前記素子が、アモルフォスシリコン、ポリシリコン、シリコン−ゲルマニウム、アルミニウム、タングステン、チタン、窒化チタン、アルミニウム、タングステン及びチタンの合金、これらの組合せ、及び金属−酸化シリコン積層からなる群から選ばれ、前記気相フッ化水素(VHF)がフッ化水素酸及びアルコールまたは水を含み、前記犠牲酸化シリコンの一部が除去されずにアンカーとしてはたらき、前記窒化シリコンの少なくとも一部分をアンモニウムヘキサフルオロケイ酸に転換すると、そのように形成された前記アンモニウムヘキサフルオロケイ酸が前記窒化シリコンの前記部分より大きな体積を有することを特徴とする請求項1に記載の方法。
Applications Claiming Priority (1)
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PCT/US2010/059238 WO2012078139A1 (en) | 2010-12-07 | 2010-12-07 | Process for manufacturing electro-mechanical systems |
Publications (2)
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JP2014500155A JP2014500155A (ja) | 2014-01-09 |
JP5898690B2 true JP5898690B2 (ja) | 2016-04-06 |
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Country Status (6)
Country | Link |
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US (1) | US9139425B2 (ja) |
EP (1) | EP2649005B1 (ja) |
JP (1) | JP5898690B2 (ja) |
KR (1) | KR101790826B1 (ja) |
CN (1) | CN103476702B (ja) |
WO (1) | WO2012078139A1 (ja) |
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