JP2010109909A - 圧電性複合基板の製造方法 - Google Patents
圧電性複合基板の製造方法 Download PDFInfo
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- 239000000758 substrate Substances 0.000 title claims abstract description 78
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- 239000002131 composite material Substances 0.000 title claims abstract description 29
- 239000013078 crystal Substances 0.000 claims abstract description 95
- 239000010409 thin film Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 35
- 238000005468 ion implantation Methods 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 30
- 150000002500 ions Chemical class 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 23
- 230000008646 thermal stress Effects 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 18
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- -1 helium ions Chemical class 0.000 claims description 6
- 238000002513 implantation Methods 0.000 claims description 6
- 239000001307 helium Substances 0.000 claims description 5
- 229910052734 helium Inorganic materials 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 238000000926 separation method Methods 0.000 abstract description 5
- 238000010897 surface acoustic wave method Methods 0.000 description 17
- 230000010287 polarization Effects 0.000 description 10
- 238000005498 polishing Methods 0.000 description 10
- 125000004429 atom Chemical group 0.000 description 8
- 230000005684 electric field Effects 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000010408 film Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229910013641 LiNbO 3 Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000001039 wet etching Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910052743 krypton Inorganic materials 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910052754 neon Inorganic materials 0.000 description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910003327 LiNbO3 Inorganic materials 0.000 description 1
- 229910012463 LiTaO3 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/01—Manufacture or treatment
- H10N30/07—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base
- H10N30/072—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base by laminating or bonding of piezoelectric or electrostrictive bodies
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
- H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/01—Manufacture or treatment
- H10N30/04—Treatments to modify a piezoelectric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning
- H10N30/045—Treatments to modify a piezoelectric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning by polarising
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- Manufacturing & Machinery (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
【解決手段】圧電体の単結晶薄膜を備える圧電性複合基板の製造方法であって、イオン注入工程(S1)と剥離工程(S2)とを含む。イオン注入工程(S1)では、圧電体の単結晶基材1へHe+イオンを注入する。これにより、単結晶基材1の表面から内部に離れた剥離層3に、マイクロキャビティを集積して形成する。そして、剥離工程(S2)では、イオン注入工程(S1)で形成したマイクロキャビティに熱応力を作用させる。これにより、単結晶基材1を剥離層3で分断して単結晶薄膜4を剥離する。
【選択図】図3
Description
Y. Osugi et al.; "Single crystalFBAR with LiNbO3 and LiTaO3", 2007 IEEE MTT-S International MicrowaveSymposium, pp.873-876 M. Bruel ; "A new Silicon OnInsulator material technology", Electronics Letters, vol. 31, Issue 14,June 6th 1995, p.1201 "Fabrication of single-crystal lithium niobate films by crystal ion slicing",APPLIEDPHYSHICS LETTERS VOLUME73,NUMBER16
ここで示すように、ヘリウム、ネオン、アルゴン、クリプトンは水素よりもイオン化エネルギーが大きく、それらのうちヘリウムが最もイオン化エネルギーが大きい。大きなイオン化エネルギーを持つイオンを利用して、圧電体の単結晶薄膜を形成すると、イオン化が解除される際のエネルギー放出によって、ボンドを効率的に切ることができ、効率的にマイクロキャビティを形成できる。
2…支持基板
3…剥離層
4…圧電体単結晶薄膜
5…圧電性複合基板
Claims (6)
- 圧電体の単結晶薄膜を備える圧電性複合基板の製造方法であって、
前記圧電体の単結晶基材へ希ガスイオンを注入することにより、前記単結晶基材の表面から内部に離れた剥離層に、マイクロキャビティを集積して形成するイオン注入工程と、
前記イオン注入工程で形成した前記マイクロキャビティに熱応力を作用させるにより、前記単結晶基材を前記剥離層で分断して前記単結晶薄膜を剥離する剥離工程と、を含む、圧電性複合基板の製造方法。 - 前記イオン注入工程は、水素のイオン化エネルギーよりも大きいイオン化エネルギーの希ガス元素のイオンを前記希ガスイオンとして利用する、請求項1に記載の圧電性複合基板の製造方法。
- 前記イオン注入工程は、前記希ガスイオンとしてヘリウムイオンを利用する、請求項2に記載の圧電性複合基板の製造方法。
- 前記イオン注入工程は、前記希ガスイオンの注入密度を、2×1016〜5×1016atom/cm2とする、請求項1〜3のいずれかに記載の圧電性複合基板の製造方法。
- 前記イオン注入工程の後から前記剥離工程の前までに、
前記単結晶薄膜が剥離される前記単結晶基材の表面に、前記圧電性複合基板を構成する支持基板を接合する工程を含む、請求項1〜4のいずれかに記載の圧電性複合基板の製造方法。 - 前記単結晶薄膜が剥離された前記単結晶基材の表面および、前記単結晶薄膜の表面を平坦化する工程を含む、請求項1〜5のいずれかに記載の圧電性複合基板の製造方法。
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JP2008282212A JP4821834B2 (ja) | 2008-10-31 | 2008-10-31 | 圧電性複合基板の製造方法 |
EP20090173492 EP2182562B1 (en) | 2008-10-31 | 2009-10-20 | Method for producing piezoelectric composite substrate |
US12/608,120 US8932686B2 (en) | 2008-10-31 | 2009-10-29 | Method for producing piezoelectric composite substrate |
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JP2008282212A JP4821834B2 (ja) | 2008-10-31 | 2008-10-31 | 圧電性複合基板の製造方法 |
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JP4821834B2 (ja) | 2011-11-24 |
EP2182562A2 (en) | 2010-05-05 |
US8932686B2 (en) | 2015-01-13 |
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