JP5049656B2 - 中空封止構造体及び中空封止構造体の製造方法 - Google Patents
中空封止構造体及び中空封止構造体の製造方法 Download PDFInfo
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- JP5049656B2 JP5049656B2 JP2007145830A JP2007145830A JP5049656B2 JP 5049656 B2 JP5049656 B2 JP 5049656B2 JP 2007145830 A JP2007145830 A JP 2007145830A JP 2007145830 A JP2007145830 A JP 2007145830A JP 5049656 B2 JP5049656 B2 JP 5049656B2
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- sacrificial layer
- functional element
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- hollow sealing
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- 238000007789 sealing Methods 0.000 title claims description 100
- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 238000000034 method Methods 0.000 title claims description 14
- 239000000758 substrate Substances 0.000 claims description 41
- 239000012530 fluid Substances 0.000 claims description 4
- 239000010408 film Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000000059 patterning Methods 0.000 description 6
- 238000005530 etching Methods 0.000 description 5
- 239000010931 gold Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000003187 abdominal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
- IGELFKKMDLGCJO-UHFFFAOYSA-N xenon difluoride Chemical compound F[Xe]F IGELFKKMDLGCJO-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- B81C1/00015—Manufacture or treatment of devices or systems in or on a substrate for manufacturing microsystems
- B81C1/00261—Processes for packaging MEMS devices
- B81C1/00277—Processes for packaging MEMS devices for maintaining a controlled atmosphere inside of the cavity containing the MEMS
- B81C1/00293—Processes for packaging MEMS devices for maintaining a controlled atmosphere inside of the cavity containing the MEMS maintaining a controlled atmosphere with processes not provided for in B81C1/00285
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
- H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
- H01L21/565—Moulds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
- H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
- H01L23/315—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed the encapsulation having a cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C2203/00—Forming microstructural systems
- B81C2203/01—Packaging MEMS
- B81C2203/0136—Growing or depositing of a covering layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Micromachines (AREA)
Description
絶縁層3は、ベース基板2上に形成され、例えばシリコン酸化膜(SiO2)からなる。絶縁層3には、その底部9bが絶縁層3の上面(主面)3aよりも下方に位置する凹形状を成す凹部としての溝構造部9が形成されている。溝構造部9は、パターニングにより、絶縁層3上において縦方向及び横方向に複数本延びる網目状に形成され、機能素子4及び信号用配線5の下部及びその周囲に配されている。この溝構造部9により、機能素子4及び信号用配線5の下部及びその周囲に渡って通路部9aが形成されている。通路部9aは、後述する第1封止体7の下方の絶縁層3を通って第1封止体7の開口7aに連通している。
まず、図4に示すように、ベース基板2上に絶縁層3を形成し、この絶縁層3上にパターニングにより、溝構造部9を形成する。図5に示すように、溝構造部9を含む絶縁層3上に、第1の犠牲層としての凹部犠牲層12を、例えば反応性ガスで除去可能な多結晶シリコンで形成し、凹部犠牲層12により、溝構造部9を埋める。
Claims (4)
- 基板の主面に形成される凹部を第1の犠牲層によって埋める工程と、
前記基板の主面に機能素子部を形成する工程と、
前記機能素子部上に形成され、前記第1の犠牲層の一部と接続されるように第2の犠牲層を形成する工程と、
前記第1の犠牲層及び前記第2の犠牲層の表面に被覆部を形成する工程と、
前記第1の犠牲層と接する前記被覆部に設けられる開口を経て犠牲層除去用の流体を流通させ前記第1の犠牲層及び前記第2の犠牲層を除去する工程と、
前記開口を閉塞する工程と、を具備することを特徴とする中空封止構造体の製造方法。 - 基板の主面に形成される凹部を埋める凹部犠牲層を形成する工程と、
前記基板上に形成された信号用配線上に、所定形状を成す段差犠牲層をさらに形成する工程と、
前記段差犠牲層及び前記基板の主面上に、前記基板に支持される支持部と、前記段差犠牲層を介して前記基板から離間した状態で前記支持部に支持される梁部とを一体に備えて構成される機能素子部を形成する工程と、
前記機能素子部上に、前記段差犠牲層の一部と接続されるように第2の犠牲層を形成する工程と、
前記凹部犠牲層と前記段差犠牲層とで構成される第1の犠牲層及び前記第2の犠牲層の表面に被覆部を形成する工程と、
前記第1の犠牲層と接する前記被覆部に設けられる開口を経て犠牲層除去用の流体を流通させ前記第1の犠牲層及び前記第2の犠牲層を除去する工程と、
前記開口を閉塞する工程と、を備えたことを特徴とする中空封止構造体の製造方法。 - 所定の主面に機能素子部が形成されるとともに前記機能素子部を囲むように凹部が形成されている基板と、
前記基板の前記主面上に形成され、前記凹部及び前記機能素子部から離間して被覆する被覆部と、
前記被覆部のうち前記凹部と隣接する領域に設けられた開口を閉塞するように設けられる封止部と、
を具備することを特徴とする中空封止構造体。 - 前記機能素子部は可動機構を含むマイクロマシンであること、を特徴とする請求項3記載の中空封止構造体。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007145830A JP5049656B2 (ja) | 2007-05-31 | 2007-05-31 | 中空封止構造体及び中空封止構造体の製造方法 |
US12/129,361 US7932116B2 (en) | 2007-05-31 | 2008-05-29 | Hollow sealing structure and manufacturing method for hollow sealing structure |
US13/041,562 US8436464B2 (en) | 2007-05-31 | 2011-03-07 | Hollow sealing structure and manufacturing method for hollow sealing structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007145830A JP5049656B2 (ja) | 2007-05-31 | 2007-05-31 | 中空封止構造体及び中空封止構造体の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008296335A JP2008296335A (ja) | 2008-12-11 |
JP5049656B2 true JP5049656B2 (ja) | 2012-10-17 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2007145830A Expired - Fee Related JP5049656B2 (ja) | 2007-05-31 | 2007-05-31 | 中空封止構造体及び中空封止構造体の製造方法 |
Country Status (2)
Country | Link |
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US (2) | US7932116B2 (ja) |
JP (1) | JP5049656B2 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9019756B2 (en) * | 2008-02-14 | 2015-04-28 | Cavendish Kinetics, Ltd | Architecture for device having cantilever electrode |
US7998775B2 (en) * | 2009-02-09 | 2011-08-16 | Taiwan Semiconductor Manufacturing Company, Ltd. | Silicon undercut prevention in sacrificial oxide release process and resulting MEMS structures |
US8535966B2 (en) | 2010-07-27 | 2013-09-17 | International Business Machines Corporation | Horizontal coplanar switches and methods of manufacture |
US8454789B2 (en) | 2010-11-05 | 2013-06-04 | Raytheon Company | Disposable bond gap control structures |
FR3021645B1 (fr) | 2014-06-03 | 2019-06-14 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Structure d'encapsulation a plusieurs cavites munies de canaux d'acces de hauteurs differentes |
EP3640978A1 (en) | 2018-10-15 | 2020-04-22 | IMEC vzw | A method for packaging semiconductor dies |
EP3640979A1 (en) * | 2018-10-15 | 2020-04-22 | IMEC vzw | A method for packaging semiconductor dies |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US7144750B2 (en) * | 2003-06-12 | 2006-12-05 | Dalsa Semiconductor Inc. | Method of fabricating silicon-based MEMS devices |
JP2005207959A (ja) | 2004-01-26 | 2005-08-04 | Mitsubishi Electric Corp | 薄膜中空構造体 |
WO2005078458A1 (en) * | 2004-02-05 | 2005-08-25 | Analog Devices, Inc. | Capped sensor |
US7138694B2 (en) * | 2004-03-02 | 2006-11-21 | Analog Devices, Inc. | Single crystal silicon sensor with additional layer and method of producing the same |
US7952189B2 (en) * | 2004-05-27 | 2011-05-31 | Chang-Feng Wan | Hermetic packaging and method of manufacture and use therefore |
US7303935B2 (en) * | 2005-09-08 | 2007-12-04 | Teledyne Licensing, Llc | High temperature microelectromechanical (MEM) devices and fabrication method |
US7923790B1 (en) * | 2007-03-09 | 2011-04-12 | Silicon Laboratories Inc. | Planar microshells for vacuum encapsulated devices and damascene method of manufacture |
-
2007
- 2007-05-31 JP JP2007145830A patent/JP5049656B2/ja not_active Expired - Fee Related
-
2008
- 2008-05-29 US US12/129,361 patent/US7932116B2/en not_active Expired - Fee Related
-
2011
- 2011-03-07 US US13/041,562 patent/US8436464B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7932116B2 (en) | 2011-04-26 |
US20110148045A1 (en) | 2011-06-23 |
JP2008296335A (ja) | 2008-12-11 |
US20080308919A1 (en) | 2008-12-18 |
US8436464B2 (en) | 2013-05-07 |
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