JP5650553B2 - 弾性波デバイスの製造方法 - Google Patents
弾性波デバイスの製造方法 Download PDFInfo
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- JP5650553B2 JP5650553B2 JP2011023073A JP2011023073A JP5650553B2 JP 5650553 B2 JP5650553 B2 JP 5650553B2 JP 2011023073 A JP2011023073 A JP 2011023073A JP 2011023073 A JP2011023073 A JP 2011023073A JP 5650553 B2 JP5650553 B2 JP 5650553B2
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- piezoelectric
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- piezoelectric layer
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- 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
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- 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
- H03H3/10—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 for obtaining desired frequency or temperature coefficient
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders or supports
- H03H9/0504—Holders or supports for bulk acoustic wave devices
-
- 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
- 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
- H10N30/08—Shaping or machining of piezoelectric or electrostrictive bodies
- H10N30/085—Shaping or machining of piezoelectric or electrostrictive bodies by machining
- H10N30/086—Shaping or machining of piezoelectric or electrostrictive bodies by machining by polishing or grinding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/42—Piezoelectric device making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49005—Acoustic transducer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49147—Assembling terminal to base
- Y10T29/49151—Assembling terminal to base by deforming or shaping
- Y10T29/49153—Assembling terminal to base by deforming or shaping with shaping or forcing terminal into base aperture
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
12 第1支持基板
14 圧電層
16 第1電極
18 櫛歯電極
20 反射器
22 孔部
24 第2支持基板
26 中空部
28 不平衡入力端子
30 不平衡出力端子
32 平衡入力端子
34 平衡出力端子
36 凹部
38 犠牲層
40 金属膜
42 第2電極
44 シリコン酸化膜
46 第1圧電基板
48 第1圧電層
50 第2圧電基板
52 第2圧電層
Claims (9)
- 第1支持基板の上面に凹部を形成する工程と、
前記凹部に犠牲層を埋め込む工程と、
前記第1支持基板の前記犠牲層が形成された上面に圧電基板を接合する工程と、
前記圧電基板を接合する工程の後に前記圧電基板を薄層化させて圧電層を形成する工程と、
前記圧電層の上面に、前記犠牲層の上方に位置する第1電極を形成する工程と、
前記第1電極を形成する工程の後に前記犠牲層が露出するまで前記第1支持基板を薄層化する工程と、
露出された前記犠牲層を除去して、前記第1支持基板に前記第1電極の下方に位置する孔部を形成する工程と、
前記孔部を形成する工程の後に前記第1支持基板の下面に第2支持基板を接合する工程と、を有することを特徴とする弾性波デバイスの製造方法。 - 前記圧電基板を接合する工程の前に前記圧電基板の下面に絶縁膜を形成する工程を有し、
前記圧電基板を接合する工程は、前記第1支持基板の上面に前記圧電基板の前記絶縁膜が形成された下面を接合する工程であることを特徴とする請求項1記載の弾性波デバイスの製造方法。 - 前記圧電基板を接合する工程の前に前記圧電基板の下面に第2電極を形成する工程を有し、
前記圧電基板を接合する工程は、前記第1支持基板の上面に前記圧電基板の前記第2電極が形成された下面を接合する工程であり、
前記第1電極を形成する工程は、前記第2電極の上方に位置する前記第1電極を形成する工程であることを特徴とする請求項1記載の弾性波デバイスの製造方法。 - 前記圧電基板を接合する工程は、前記第1支持基板の上面に第1圧電基板を接合する工程と、前記第1圧電基板を接合した後に前記第1圧電基板を薄層化させて形成した第1圧電層の上面に、前記第1圧電基板と同じ材料で且つ分極方向が逆方向の第2圧電基板を接合する工程と、を有し、
前記圧電層を形成する工程は、前記第2圧電基板を薄層化させて第2圧電層とすることで、前記第1圧電層と前記第2圧電層とからなる前記圧電層を形成する工程であることを特徴とする請求項1から3のいずれか一項記載の弾性波デバイスの製造方法。 - 前記圧電基板を接合する工程は、前記第1支持基板の上面に第1圧電基板を接合する工程であり、
前記圧電層を形成する工程は、前記第1圧電基板を接合した後に前記第1圧電基板を薄層化させて第1圧電層を形成し、前記第1圧電層の上面に、前記第1圧電層と同じ材料で且つ分極方向が逆方向の第2圧電層を成膜することで、前記第1圧電層と前記第2圧電層とからなる前記圧電層を形成する工程であることを特徴とする請求項1から3のいずれか一項記載の弾性波デバイスの製造方法。 - 前記第1電極は、櫛歯電極を含むことを特徴とする請求項1または2記載の弾性波デバイスの製造方法。
- 前記弾性波デバイスは、前記第1電極と前記第2電極との間に前記圧電層が設けられた圧電薄膜共振子であることを特徴とする請求項3記載の弾性波デバイスの製造方法。
- 前記圧電層は、LiTaO3又はLiNbO3からなることを特徴とする請求項1から7のいずれか一項記載の弾性波デバイスの製造方法。
- 前記第1支持基板及び前記第2支持基板は、Si基板又はSiを主成分とする基板からなることを特徴とする請求項1から8のいずれか一項記載の弾性波デバイスの製造方法。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011023073A JP5650553B2 (ja) | 2011-02-04 | 2011-02-04 | 弾性波デバイスの製造方法 |
| US13/362,743 US9148107B2 (en) | 2011-02-04 | 2012-01-31 | Method for manufacturing acoustic wave device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011023073A JP5650553B2 (ja) | 2011-02-04 | 2011-02-04 | 弾性波デバイスの製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2012165132A JP2012165132A (ja) | 2012-08-30 |
| JP5650553B2 true JP5650553B2 (ja) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011023073A Active JP5650553B2 (ja) | 2011-02-04 | 2011-02-04 | 弾性波デバイスの製造方法 |
Country Status (2)
| Country | Link |
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| US (1) | US9148107B2 (ja) |
| JP (1) | JP5650553B2 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE112022005215T5 (de) | 2022-01-17 | 2024-08-14 | Ngk Insulators, Ltd. | Verfahren zur Herstellung eines Verbundsubstrats |
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| JP2012165132A (ja) | 2012-08-30 |
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