JP6621384B2 - 弾性表面波デバイス用複合基板の製造方法 - Google Patents
弾性表面波デバイス用複合基板の製造方法 Download PDFInfo
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Classifications
-
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
-
- 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
- H03H9/02614—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical 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
- H03H9/02818—Means for compensation or elimination of undesirable effects
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/25—Constructional features of resonators using surface acoustic waves
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/02—Polysilicates
-
- 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
- H03H3/04—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 for obtaining desired frequency or temperature coefficient
- H03H2003/0407—Temperature coefficient
-
- 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
- H03H3/04—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 for obtaining desired frequency or temperature coefficient
- H03H2003/0414—Resonance frequency
-
- 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
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Description
11、21 凹凸構造
12、22 平坦な表面
20 支持基板
22 イオン注入領域
30 無機材料膜
32 平坦化された表面
Claims (17)
- 圧電単結晶基板と支持基板とを準備し、
前記圧電単結晶基板と前記支持基板の少なくともいずれか一方に、粗さRSmと弾性表面波デバイスとして使用する際の波長との比であるRSm/波長の数値が0.2以上7以下である凹凸構造を形成し、
前記凹凸構造上に無機材料からなる膜を成膜し、
前記圧電単結晶基板と前記支持基板とを、前記無機材料からなる膜を挟むようにして接合する弾性表面波デバイス用複合基板の製造方法。 - 前記凹凸構造の粗さRaが100nm以上であることを特徴とする請求項1に記載の弾性表面波デバイス用複合基板の製造方法。
- 少なくともいずれか一方に無機材料からなる膜が成膜された、前記圧電単結晶基板と前記支持基板との接合に先立ち、それぞれの接合面を平坦化することを特徴とする請求項1又は2に記載の弾性表面波デバイス用複合基板の製造方法。
- 平坦化された前記それぞれの接合面の少なくともいずれか一方に表面活性化処理を施した上で接合することを特徴とする請求項3に記載の弾性表面波デバイス用複合基板の製造方法。
- 前記表面活性化処理が、オゾン水処理、UVオゾン処理、イオンビーム処理、プラズマ処理のいずれかであることを特徴とする請求項4に記載の弾性表面波デバイス用複合基板の製造方法。
- 前記無機材料の膜の成膜が、前記凹凸構造が形成された面に有機ケイ素化合物の溶液を塗布し、硬化、焼成することにより行われることを特徴とする請求項1から5のいずれか1項に記載の弾性表面波デバイス用複合基板の製造方法。
- 前記有機ケイ素化合物を250℃以下の温度で硬化することを特徴とする請求項6に記載の弾性表面波デバイス用複合基板の製造方法。
- 前記有機ケイ素化合物を600℃以下の温度で焼成することを特徴とする請求項6又は7に記載の弾性表面波デバイス用複合基板の製造方法。
- 前記有機ケイ素化合物を硬化してから焼成した後までの体積収縮率が10%以下であることを特徴とする請求項6から8のいずれか1項に記載の弾性表面波デバイス用複合基板の製造方法。
- 前記有機ケイ素化合物がパーヒドロポリシラザン又はメチルトリメトキシシランを含有することを特徴とする請求項6から9のいずれか1項に記載の弾性表面波デバイス用複合基板の製造方法。
- 圧電単結晶基板と支持基板とを準備し、
前記圧電単結晶基板と前記支持基板の少なくともいずれか一方に、成膜後に400〜600℃に加熱した際の体積収縮率が10%以下である無機材料からなる膜を、化学気相成長法又は物理気相成長法により成膜し、
前記圧電単結晶基板と前記支持基板とを、前記無機材料からなる膜を挟むようにして接合する弾性表面波デバイス用複合基板の製造方法。 - 前記化学気相成長法の反応ガスがシランを含むことを特徴とする請求項11に記載の弾性表面波デバイス用複合基板の製造方法。
- 前記物理気相成長法がマグネトロンスパッタ方式であることを特徴とする請求項11に記載の弾性表面波デバイス用複合基板の製造方法。
- 前記無機材料の膜の成膜が70℃以下で行われることを特徴とする請求項11から13のいずれか1項に記載の弾性表面波デバイス用複合基板の製造方法。
- 前記圧電単結晶基板の素材は、タンタル酸リチウム又はニオブ酸リチウムであることを特徴とする請求項1から14のいずれか1項に記載の弾性表面波デバイス用複合基板の製造方法。
- 前記支持基板の素材は、シリコン、酸化膜付きシリコン、ガラス、石英、アルミナ、サファイア、炭化ケイ素、窒化ケイ素のいずれかであることを特徴とする請求項1から15のいずれか1項に記載の弾性表面波デバイス用複合基板の製造方法。
- 前記無機材料がSiOx(x=2±0.5)、SiON、SiN、アモルファスSi、多結晶Si、アモルファスSiCのいずれかであることを特徴とする請求項1から16のいずれか1項に記載の弾性表面波デバイス用複合基板の製造方法。
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JP2016142751A JP6621384B2 (ja) | 2016-07-20 | 2016-07-20 | 弾性表面波デバイス用複合基板の製造方法 |
US16/318,966 US11606073B2 (en) | 2016-07-20 | 2017-05-23 | Method of producing composite substrate for surface acoustic wave device |
CN201780040222.8A CN109417367B (zh) | 2016-07-20 | 2017-05-23 | 声表面波器件用复合基板的制造方法 |
EP17830689.0A EP3490144B1 (en) | 2016-07-20 | 2017-05-23 | Method of producing composite substrate for surface acoustic wave device |
PCT/JP2017/019181 WO2018016169A1 (ja) | 2016-07-20 | 2017-05-23 | 弾性表面波デバイス用複合基板の製造方法 |
KR1020197000149A KR102337114B1 (ko) | 2016-07-20 | 2017-05-23 | 탄성 표면파 디바이스용 복합 기판의 제조 방법 |
TW106122262A TWI742104B (zh) | 2016-07-20 | 2017-07-03 | 彈性表面波裝置用複合基板的製造方法 |
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EP (1) | EP3490144B1 (ja) |
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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 |
WO2019181087A1 (ja) * | 2018-03-20 | 2019-09-26 | 日本碍子株式会社 | 圧電性材料基板と支持基板との接合体 |
FR3079345B1 (fr) * | 2018-03-26 | 2020-02-21 | Soitec | Procede de fabrication d'un substrat pour dispositif radiofrequence |
TWI787475B (zh) * | 2018-03-29 | 2022-12-21 | 日商日本碍子股份有限公司 | 接合體及彈性波元件 |
FR3079661A1 (fr) | 2018-03-29 | 2019-10-04 | Soitec | Procede de fabrication d'un substrat pour filtre radiofrequence |
TWI791099B (zh) * | 2018-03-29 | 2023-02-01 | 日商日本碍子股份有限公司 | 接合體及彈性波元件 |
KR102312794B1 (ko) * | 2018-05-16 | 2021-10-15 | 엔지케이 인슐레이터 엘티디 | 압전성 재료 기판과 지지 기판의 접합체 |
US10938372B2 (en) * | 2018-05-17 | 2021-03-02 | Taiyo Yuden Co., Ltd. | Acoustic wave resonator, acoustic wave device, and filter |
JP2020036212A (ja) * | 2018-08-30 | 2020-03-05 | 信越化学工業株式会社 | 複合基板および複合基板の製造方法 |
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