JP7262421B2 - 圧電体複合基板およびその製造方法 - Google Patents
圧電体複合基板およびその製造方法 Download PDFInfo
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- JP7262421B2 JP7262421B2 JP2020082666A JP2020082666A JP7262421B2 JP 7262421 B2 JP7262421 B2 JP 7262421B2 JP 2020082666 A JP2020082666 A JP 2020082666A JP 2020082666 A JP2020082666 A JP 2020082666A JP 7262421 B2 JP7262421 B2 JP 7262421B2
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- 239000000758 substrate Substances 0.000 title claims description 213
- 239000002131 composite material Substances 0.000 title claims description 33
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 239000013078 crystal Substances 0.000 claims description 68
- WSMQKESQZFQMFW-UHFFFAOYSA-N 5-methyl-pyrazole-3-carboxylic acid Chemical compound CC1=CC(C(O)=O)=NN1 WSMQKESQZFQMFW-UHFFFAOYSA-N 0.000 claims description 60
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 49
- 235000012239 silicon dioxide Nutrition 0.000 claims description 39
- 239000010453 quartz Substances 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 20
- 238000005468 ion implantation Methods 0.000 claims description 18
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 claims description 17
- 238000005229 chemical vapour deposition Methods 0.000 claims description 10
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 238000004528 spin coating Methods 0.000 claims description 4
- 238000004544 sputter deposition Methods 0.000 claims description 4
- 238000003475 lamination Methods 0.000 claims description 2
- 235000012431 wafers Nutrition 0.000 description 30
- 239000010408 film Substances 0.000 description 23
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 15
- 229910052710 silicon Inorganic materials 0.000 description 15
- 239000010703 silicon Substances 0.000 description 15
- 239000010409 thin film Substances 0.000 description 14
- 125000004429 atom Chemical group 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000010897 surface acoustic wave method Methods 0.000 description 7
- 230000001133 acceleration Effects 0.000 description 6
- 229910021417 amorphous silicon Inorganic materials 0.000 description 6
- 238000000678 plasma activation Methods 0.000 description 6
- 230000003746 surface roughness Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical compound [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 description 4
- 229910052681 coesite Inorganic materials 0.000 description 4
- 229910052906 cristobalite Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 238000002513 implantation Methods 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 229910052682 stishovite Inorganic materials 0.000 description 4
- 229910052905 tridymite Inorganic materials 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 238000001994 activation Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 229910052594 sapphire Inorganic materials 0.000 description 3
- 239000010980 sapphire Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910013641 LiNbO 3 Inorganic materials 0.000 description 2
- 229910012463 LiTaO3 Inorganic materials 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- -1 hydrogen atom ions Chemical class 0.000 description 2
- 238000010884 ion-beam technique Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- GNLJOAHHAPACCT-UHFFFAOYSA-N 4-diethoxyphosphorylmorpholine Chemical compound CCOP(=O)(OCC)N1CCOCC1 GNLJOAHHAPACCT-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02543—Characteristics of substrate, e.g. cutting angles
- H03H9/02574—Characteristics of substrate, e.g. cutting angles of combined substrates, multilayered substrates, piezoelectrical layers on not-piezoelectrical substrate
-
- 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
- H03H3/08—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 resonators or networks using surface acoustic waves
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02543—Characteristics of substrate, e.g. cutting angles
- H03H9/02559—Characteristics of substrate, e.g. cutting angles of lithium niobate or lithium-tantalate substrates
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02818—Means for compensation or elimination of undesirable effects
- H03H9/02834—Means for compensation or elimination of undesirable effects of temperature influence
-
- 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
- H10N30/073—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base by laminating or bonding of piezoelectric or electrostrictive bodies by fusion of metals or by adhesives
-
- 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
- H10N30/80—Constructional details
- H10N30/85—Piezoelectric or electrostrictive active materials
- H10N30/853—Ceramic compositions
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Description
4インチ径のタンタル酸リチウム(LT)単結晶インゴットをスライス、ラップ、研磨して、厚み350μmの片面鏡面であるLT単結晶基板に仕上げた。そして、このLT単結晶基板の鏡面側に、CVD法によりアモルファスシリコン膜を20nm形成した。
4インチ径のタンタル酸リチウム(LT)単結晶インゴットをスライス、ラップ、研磨して、42°回転YカットのLT単結晶基板を厚み500μmの片面鏡面である圧電単結晶基板に仕上げた。そして、LT単結晶基板の鏡面側に、CVD法によりシリコン酸化膜を形成し、その後に研磨することで、LT鏡面上にシリコン酸化膜を150nm形成した。
4インチ径のニオブ酸リチウム(LN)単結晶インゴットをスライス、ラップ、研磨して、厚み500μmの片面鏡面であるLN単結晶基板に仕上げた。このLN単結晶基板の鏡面側に、CVD法によりアモルファスシリコン膜を20nm形成した。
4インチ径のタンタル酸リチウム単結晶(LT)インゴットをスライス、ラップ、研磨して、厚み350μmの片面鏡面であるLT単結晶基板に仕上げた。
比較例1で用いたLT単結晶基板と石英基板とをプラズマ活性化処理によって貼り合わせて接合基板を得た。この接合基板を表2に示す各温度に熱処理し、その際の接合基板の変形量を測定した。その結果を表2に示す。なお、接合基板の変形量としては、図2に示すように、熱処理後の接合基板20の中心の凸部を下向きとして平板に置いた状態で、平板接触部と接触部に対し接合基板の最も大きく変形した箇所の高低差を測定した。
1a イオン注入層
2 絶縁性基板
3 介在層
10 圧電体複合基板
20 接合基板
Claims (6)
- 絶縁性基板と、介在層と、圧電体層とが順に積層された圧電体複合基板であって、前記圧電体層の厚みが積層方向に100nm~2,000nmの範囲内であり、前記絶縁性基板の直径が2インチ~12インチの範囲内であり且つ板厚が100μm~2,000μmであり、前記圧電体層の線膨張係数よりも前記絶縁性基板の線膨張係数の方が小さく、その差が14×10-6/K~16×10-6/Kの範囲内であり、前記絶縁性基板と前記介在層がどちらもSiを含むアモルファス材料で構成されている圧電体複合基板。
- 前記圧電体層が、タンタル酸リチウムまたはニオブ酸リチウムを含む請求項1記載の圧電体複合基板。
- 前記絶縁性基板が、石英基板である請求項1または2記載の圧電体複合基板。
- 前記介在層が、アモルファスシリコンまたは二酸化ケイ素を含む請求項1~3のいずれか一項記載の圧電体複合基板。
- 絶縁性基板と、介在層と、圧電体層とが順に積層された圧電体複合基板の製造方法であって、
圧電単結晶基板と、前記圧電単結晶基板の線膨張係数よりも小さい線膨張係数を有し、その差が14×10-6/K~16×10-6/Kの範囲内であり、Siを含むアモルファス材料で構成されている絶縁性基板とを準備するステップと、
前記圧電単結晶基板の張り合わせ面に対してイオン注入処理を行い、前記圧電単結晶基板の内部にイオン注入層を形成するステップと、
前記絶縁性基板および前記圧電単結晶基板の一方または両方の張り合わせ面に、Siを含むアモルファス材料によって介在層を形成するステップと、
前記絶縁性基板の張り合わせ面と前記圧電単結晶基板の張り合わせ面とを前記介在層を介して貼り合わせて接合体を得るステップと、
前記接合体を熱処理するステップと、
前記熱処理をした接合体から、圧電体層として前記イオン注入層を残して前記圧電単結晶基板の残りの部分を剥離するステップと
を含む圧電体複合基板の製造方法。 - 前記介在層を形成するステップにおいて、前記Siを含むアモルファス材料がアモルファスシリコンまたは二酸化ケイ素を含み、CVD法、スパッタ法、またはスピン塗布法によって前記介在層を形成する請求項5記載の圧電体複合基板の製造方法。
Priority Applications (7)
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JP2020082666A JP7262421B2 (ja) | 2020-05-08 | 2020-05-08 | 圧電体複合基板およびその製造方法 |
PCT/JP2021/016935 WO2021225101A1 (ja) | 2020-05-08 | 2021-04-28 | 圧電体複合基板およびその製造方法 |
EP21799739.4A EP4148812A4 (en) | 2020-05-08 | 2021-04-28 | PIEZOELECTRIC COMPOSITE SUBSTRATE AND METHOD FOR PRODUCING THE SAME |
CN202180033670.1A CN115552568A (zh) | 2020-05-08 | 2021-04-28 | 压电复合基底及其制造方法 |
US17/998,169 US20230284533A1 (en) | 2020-05-08 | 2021-04-28 | Piezoelectric composite substrate and method for manufacturing same |
KR1020227038130A KR20230007355A (ko) | 2020-05-08 | 2021-04-28 | 압전체 복합 기판 및 그 제조 방법 |
TW110116156A TW202207494A (zh) | 2020-05-08 | 2021-05-05 | 壓電體複合基板及其製造方法 |
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JP2020082666A JP7262421B2 (ja) | 2020-05-08 | 2020-05-08 | 圧電体複合基板およびその製造方法 |
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JP2021177532A JP2021177532A (ja) | 2021-11-11 |
JP7262421B2 true JP7262421B2 (ja) | 2023-04-21 |
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US (1) | US20230284533A1 (ja) |
EP (1) | EP4148812A4 (ja) |
JP (1) | JP7262421B2 (ja) |
KR (1) | KR20230007355A (ja) |
CN (1) | CN115552568A (ja) |
TW (1) | TW202207494A (ja) |
WO (1) | WO2021225101A1 (ja) |
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CN117156947B (zh) * | 2023-10-31 | 2024-02-20 | 北京青禾晶元半导体科技有限责任公司 | 一种复合压电衬底的制备方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010187373A (ja) | 2009-01-19 | 2010-08-26 | Ngk Insulators Ltd | 複合基板及びそれを用いた弾性波デバイス |
JP2017098577A (ja) | 2012-01-12 | 2017-06-01 | 信越化学工業株式会社 | 熱酸化異種複合基板の製造方法 |
WO2018066653A1 (ja) | 2016-10-06 | 2018-04-12 | 信越化学工業株式会社 | 複合基板及び複合基板の製造方法 |
JP2019077607A (ja) | 2017-10-20 | 2019-05-23 | 信越化学工業株式会社 | タンタル酸リチウム単結晶基板及びこれの接合基板とこの製造法及びこの基板を用いた弾性表面波デバイス |
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FR2681472B1 (fr) * | 1991-09-18 | 1993-10-29 | Commissariat Energie Atomique | Procede de fabrication de films minces de materiau semiconducteur. |
JP6621384B2 (ja) * | 2016-07-20 | 2019-12-18 | 信越化学工業株式会社 | 弾性表面波デバイス用複合基板の製造方法 |
JP6998650B2 (ja) * | 2016-08-10 | 2022-01-18 | 株式会社日本製鋼所 | 接合基板、弾性表面波素子、弾性表面波デバイスおよび接合基板の製造方法 |
WO2018088093A1 (ja) * | 2016-11-11 | 2018-05-17 | 信越化学工業株式会社 | 複合基板、表面弾性波デバイスおよび複合基板の製造方法 |
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- 2020-05-08 JP JP2020082666A patent/JP7262421B2/ja active Active
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2021
- 2021-04-28 CN CN202180033670.1A patent/CN115552568A/zh active Pending
- 2021-04-28 EP EP21799739.4A patent/EP4148812A4/en active Pending
- 2021-04-28 WO PCT/JP2021/016935 patent/WO2021225101A1/ja unknown
- 2021-04-28 US US17/998,169 patent/US20230284533A1/en active Pending
- 2021-04-28 KR KR1020227038130A patent/KR20230007355A/ko unknown
- 2021-05-05 TW TW110116156A patent/TW202207494A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010187373A (ja) | 2009-01-19 | 2010-08-26 | Ngk Insulators Ltd | 複合基板及びそれを用いた弾性波デバイス |
JP2017098577A (ja) | 2012-01-12 | 2017-06-01 | 信越化学工業株式会社 | 熱酸化異種複合基板の製造方法 |
WO2018066653A1 (ja) | 2016-10-06 | 2018-04-12 | 信越化学工業株式会社 | 複合基板及び複合基板の製造方法 |
JP2019077607A (ja) | 2017-10-20 | 2019-05-23 | 信越化学工業株式会社 | タンタル酸リチウム単結晶基板及びこれの接合基板とこの製造法及びこの基板を用いた弾性表面波デバイス |
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Publication number | Publication date |
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CN115552568A (zh) | 2022-12-30 |
EP4148812A1 (en) | 2023-03-15 |
TW202207494A (zh) | 2022-02-16 |
WO2021225101A1 (ja) | 2021-11-11 |
US20230284533A1 (en) | 2023-09-07 |
JP2021177532A (ja) | 2021-11-11 |
EP4148812A4 (en) | 2024-06-12 |
KR20230007355A (ko) | 2023-01-12 |
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