WO2017068828A1 - 弾性波装置 - Google Patents
弾性波装置 Download PDFInfo
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- WO2017068828A1 WO2017068828A1 PCT/JP2016/071725 JP2016071725W WO2017068828A1 WO 2017068828 A1 WO2017068828 A1 WO 2017068828A1 JP 2016071725 W JP2016071725 W JP 2016071725W WO 2017068828 A1 WO2017068828 A1 WO 2017068828A1
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- acoustic impedance
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- piezoelectric substrate
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- wave device
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- 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
- H03H9/02897—Means for compensation or elimination of undesirable effects of strain or mechanical damage, e.g. strain due to bending influence
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- 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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- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
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- H03H9/02—Details
- H03H9/02007—Details of bulk acoustic wave devices
- H03H9/02086—Means for compensation or elimination of undesirable effects
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- H03H9/02228—Guided bulk acoustic wave devices or Lamb wave devices having interdigital transducers situated in parallel planes on either side of a piezoelectric layer
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- 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
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- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
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- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/058—Holders; Supports for surface acoustic wave devices
- H03H9/0585—Holders; Supports for surface acoustic wave devices consisting of an adhesive layer
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- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/13—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
- H03H9/131—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials consisting of a multilayered structure
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- H03H9/172—Means for mounting on a substrate, i.e. means constituting the material interface confining the waves to a volume
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- H10N30/80—Constructional details
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- H10N30/853—Ceramic compositions
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- H10N30/80—Constructional details
- H10N30/85—Piezoelectric or electrostrictive active materials
- H10N30/853—Ceramic compositions
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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
- H10N30/80—Constructional details
- H10N30/87—Electrodes or interconnections, e.g. leads or terminals
- H10N30/877—Conductive materials
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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
- H10N30/80—Constructional details
- H10N30/88—Mounts; Supports; Enclosures; Casings
- H10N30/883—Further insulation means against electrical, physical or chemical damage, e.g. protective coatings
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- 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
- H03H2003/025—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 the resonators or networks comprising an acoustic mirror
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- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6406—Filters characterised by a particular frequency characteristic
Definitions
- the present invention relates to an elastic wave device used for a resonator, a band filter, and the like.
- elastic wave devices have been widely used as resonators and bandpass filters.
- various elastic waves such as Rayleigh waves and SH waves are used.
- Patent Document 1 discloses an elastic wave device using a plate wave.
- an acoustic reflection layer, a piezoelectric layer, and an IDT electrode are laminated in this order on a support substrate.
- a piezoelectric body is bonded to a support substrate on which an acoustic reflection layer is laminated.
- Patent Document 2 discloses an acoustic wave device in which a high sound velocity film, a low sound velocity film, and a piezoelectric film are laminated in this order on a support substrate.
- a support substrate is bonded to a laminate in which a piezoelectric film, a low acoustic velocity film, and a high acoustic velocity membrane are laminated.
- An object of the present invention is to provide an elastic wave device in which warpage of a piezoelectric substrate hardly occurs and characteristic deterioration hardly occurs.
- An acoustic wave device includes a support substrate, an acoustic multilayer film provided on the support substrate, a piezoelectric substrate provided on the acoustic multilayer film, and an IDT electrode provided on the piezoelectric substrate.
- the absolute value of the thermal expansion coefficient of the piezoelectric substrate is larger than the absolute value of the thermal expansion coefficient of the support substrate, and the acoustic multilayer film has at least four acoustic impedance layers, and the at least four layers.
- the acoustic impedance layer is composed of at least one low acoustic impedance layer and at least one high acoustic impedance layer having an acoustic impedance higher than that of the low acoustic impedance layer. From the first acoustic impedance layer toward the substrate side, the third acoustic impedance layer and the fourth acoustic impedance layer Further comprising a bonding layer provided in any position of the surface, up.
- the bonding layer is any one of the acoustic impedance layers from the first layer to the third layer from the piezoelectric substrate side toward the support substrate side. It is provided in the acoustic impedance layer.
- the bonding layers are adjacent to each other among the acoustic impedance layers from the first layer to the fourth layer from the piezoelectric substrate side to the support substrate side. It is provided at the interface between any two acoustic impedance layers.
- a plate wave of an S 0 mode, an A 0 mode, an A 1 mode, an SH 0 mode, or an SH 1 mode is used as the propagating elastic wave.
- the thickness of the bonding layer is 5 nm or less. In this case, the deterioration of characteristics is less likely to occur.
- the bonding layer also serves as an insulating layer. In this case, the deterioration of characteristics is less likely to occur.
- the support substrate is made of glass or Si
- the piezoelectric substrate is made of LiNbO 3 or LiTaO 3 . In this case, warpage of the piezoelectric substrate is less likely to occur.
- the low acoustic impedance layer is made of silicon oxide.
- the plate wave can be confined more efficiently.
- the high acoustic impedance layer is made of tungsten, platinum, tantalum, silicon nitride, or aluminum nitride.
- the plate wave can be confined more efficiently.
- the present invention it is possible to provide an elastic wave device in which the piezoelectric substrate is hardly warped and the characteristics are hardly deteriorated.
- FIG. 1A is a schematic front sectional view of an acoustic wave device according to the first embodiment of the present invention
- FIG. 1B is a schematic plan view showing an electrode structure thereof
- FIG. 2 is a partially cutaway schematic cross-sectional view showing an enlarged main part of the acoustic wave device according to the first embodiment of the present invention
- FIG. 3 is a diagram showing a relationship between the thickness of the piezoelectric substrate and the impedance ratio (Za / Zr) when the number of acoustic impedance layers constituting the acoustic multilayer film is changed in Experimental Example 1.
- FIG. 4 (a) to 4 (d) are schematic front sectional views for explaining a method of manufacturing an acoustic wave device according to the first embodiment of the present invention.
- FIG. 5 is a diagram showing the relationship between the number of acoustic impedance layers stacked and the amount of warpage of the piezoelectric substrate when an X-cut-LiNbO 3 substrate is used as the piezoelectric substrate in Experimental Example 2.
- FIG. 6 is a diagram illustrating the relationship between the bonding position of the bonding layer and the impedance ratio (Za / Zr) in Experimental Example 3.
- FIG. 7 is a diagram illustrating resonance characteristics when a bonding layer is provided on the first acoustic impedance layer from the piezoelectric substrate side in Experimental Example 3.
- FIG. 8 is a partially cutaway schematic cross-sectional view showing an enlarged main part of an acoustic wave device according to the second embodiment of the present invention.
- FIG. 1A is a schematic front sectional view of an acoustic wave device according to the first embodiment of the present invention
- FIG. 1B is a schematic plan view showing an electrode structure thereof
- FIG. 2 is a partially cutaway schematic cross-sectional view showing an enlarged main part of the acoustic wave device according to the first embodiment of the present invention.
- Acoustic wave device 1 is S 0 mode, A 0 mode, A 1 mode, SH 0 mode, or acoustic wave device using a Lamb wave, such as SH 1 mode.
- the acoustic wave device 1 has a support substrate 2.
- An acoustic multilayer film 3 is laminated on the support substrate 2.
- a piezoelectric substrate 4 is laminated on the acoustic multilayer film 3.
- an IDT electrode 5 and electrode lands 6a and 6b are laminated.
- the electrode lands 6 a and 6 b are provided so as to be electrically connected to the IDT electrode 5.
- the support substrate 2 is made of Si.
- the material constituting the support substrate 2 is not particularly limited, and sapphire, LiTaO 3 , LiNbO 3 , piezoelectric materials such as quartz, alumina, magnesia, silicon nitride, aluminum nitride, silicon oxide, aluminum oxide, silicon carbide, zirconia, Various ceramics such as cordierite, mullite, steatite, and forsterite, dielectric materials such as glass, semiconductors such as silicon and gallium nitride, resins, and the like can be used.
- the acoustic multilayer film 3 includes low acoustic impedance layers 3a, 3c, 3e, and 3g and high acoustic impedance layers 3b, 3d, and 3f.
- the acoustic impedances of the high acoustic impedance layers 3b, 3d, and 3f are higher than the acoustic impedances of the low acoustic impedance layers 3a, 3c, 3e, and 3g.
- the low acoustic impedance layers 3a, 3c, 3e, and 3g and the high acoustic impedance layers 3b, 3d, and 3f are alternately arranged in the stacking direction.
- the plate waves propagated from the piezoelectric substrate 4 are the low acoustic impedance layers 3a, 3c, 3e, 3g and the high acoustic impedance layers 3b, 3d, which are the upper surfaces of the low acoustic impedance layers 3a, 3c, 3e, 3g. Reflected at the interface of 3f. Thereby, the energy of the plate wave can be confined efficiently.
- the low acoustic impedance layers 3a, 3c, 3e, 3g and the high acoustic impedance layers 3b, 3d, 3f may not be alternately arranged in the stacking direction.
- at least one of the low acoustic impedance layers 3a, 3c, 3e, 3g is piezoelectric than at least one of the high acoustic impedance layers 3b, 3d, 3f. It is preferably provided on the substrate 4 side. More preferably, the low acoustic impedance layers 3a, 3c, 3e, 3g and the high acoustic impedance layers 3b, 3d, 3f are desirably arranged alternately in the stacking direction.
- the low acoustic impedance layers 3a, 3c, 3e, and 3g and the high acoustic impedance layers 3b, 3d, and 3f only need to satisfy the relationship of high acoustic impedance layer> low acoustic impedance layer. Any material can be used as long as the relationship is satisfied.
- the acoustic multilayer film 3 is composed of seven acoustic impedance layers.
- the number of acoustic impedance layers may be at least four or more.
- the upper limit of the number of laminated acoustic impedance layers is not particularly limited, but is preferably about 20 layers.
- the plate wave can be confined efficiently.
- this will be described in detail with reference to Experimental Example 1.
- an acoustic wave device 1 that is a 1-port type acoustic wave resonator was manufactured under the following conditions, and, for example, an S 0 mode plate wave was excited.
- Support substrate 2 Si substrate Acoustic multilayer film 3 Number of layers: 2, 4 or 6 layers, low acoustic impedance layer: SiO 2 , high acoustic impedance layer: Pt, film thickness of each layer: SiO 2 ... 240 nm, Pt ... 150nm Piezoelectric substrate 4 ... X cut-LiNbO 3 ⁇ Euler angles (90 °, 90 °, 40 °) ⁇ IDT electrode 5... AlCu (Cu 1%) / Ti, duty ratio: 0.5, number of electrode fingers: 100, cross width: 25 ⁇ m, wavelength determined by electrode finger pitch ( ⁇ ): 1.7 ⁇ m
- FIG. 3 is a diagram showing the relationship between the thickness of the piezoelectric substrate 4 (LiNbO 3 ) and the impedance ratio (Za / Zr) when the number of acoustic impedance layers constituting the acoustic multilayer film is changed.
- FIG. 3 shows that the acoustic wave device 1 having four and six acoustic impedance layers has better impedance characteristics than those having two layers. This indicates that at least four acoustic impedance layers are necessary to efficiently confine the plate wave and obtain good impedance characteristics.
- the acoustic multilayer film only needs to have at least four acoustic impedance layers. Thereby, the plate wave can be confined efficiently.
- the acoustic multilayer film may further include another layer made of TiO 2 or the like as long as it has at least four acoustic impedance layers.
- the thickness of each of the acoustic impedance layers constituting the acoustic multilayer film 3 is in the range of about 1/4 to 10 times the thickness of the piezoelectric substrate 4. It is preferable. However, the thickness of each of the plurality of acoustic impedance layers is not particularly limited.
- Low acoustic impedance layers 3a, 3c, 3e, 3 g is composed of SiO 2.
- the low acoustic impedance layers 3a, 3c, 3e, and 3g may be made of Al, Ti, or the like.
- the high acoustic impedance layers 3b, 3d, and 3f are made of Pt. However, the high acoustic impedance layers 3b, 3d, and 3f may be made of AlN, W, LiTaO 3 , Al 2 O 3 , LiNbO 3 , Ta, SiN, ZnO, or the like.
- the bonding layer 9 is provided at the interface between the low acoustic impedance layer 3e and the high acoustic impedance layer 3d. That is, the bonding layer 9 is provided at the interface between the third acoustic impedance layer 3e and the fourth acoustic impedance layer 3d from the piezoelectric substrate 4 side toward the support substrate 2 side. Therefore, in the present embodiment, the bonding layer 9 is not provided immediately below the piezoelectric substrate 4.
- the bonding layer 9 is made of Ti oxide. Therefore, in the present embodiment, the bonding layer 9 is an insulating layer. Note that the bonding layer 9 is not limited to the Ti oxide, and may be an oxide of another metal such as Al. Moreover, you may be comprised with metals, such as Ti and Al, instead of a metal oxide. However, metal oxide or metal nitride is preferable because it can achieve electrical insulation. In particular, since the bonding strength is high, an oxide or nitride of Ti is preferable.
- the thickness of the bonding layer 9 is not particularly limited, but is preferably 5 nm or less. As in the present embodiment, when the bonding layer 9 is an insulating layer and the thickness of the bonding layer 9 is within the above range, the characteristics of the acoustic wave device 1 can be further hardly deteriorated.
- the piezoelectric substrate 4 is a substrate made of LiNbO 3 . Therefore, the absolute value of the thermal expansion coefficient of the piezoelectric substrate 4 is larger than the absolute value of the thermal expansion coefficient of the support substrate 2 made of Si.
- the piezoelectric substrate 4 is not particularly limited as long as the absolute value of the thermal expansion coefficient is larger than that of the support substrate 2.
- a substrate made of another piezoelectric single crystal such as LiTaO 3 or a substrate made of piezoelectric ceramics may be used.
- a substrate made of glass or Si as the support substrate 2 and use a substrate made of LiNbO 3 or LiTaO 3 as the piezoelectric substrate 4.
- the difference in the absolute value of the thermal expansion coefficient becomes small, the warp of the piezoelectric substrate 4 can be further suppressed.
- the electrode structure shown in FIG. 1B is formed on the piezoelectric substrate 4. That is, the IDT electrode 5 and the reflectors 7 and 8 disposed on both sides of the IDT electrode 5 in the elastic wave propagation direction are formed. Thereby, a 1-port elastic wave resonator is configured.
- the reflectors 7 and 8 may not be provided.
- the IDT electrode 5 includes first and second bus bars and a plurality of first and second electrode fingers.
- the plurality of first electrode fingers and the plurality of second electrode fingers are interleaved with each other.
- the plurality of first electrode fingers are connected to the first bus bar, and the plurality of second electrode fingers are connected to the second bus bar.
- the elastic wave device 1 uses a plate wave as an elastic wave generated by exciting the IDT electrode 5 as described above.
- a SiO 2 film or a SiN film as a temperature adjustment film may be provided so as to cover the IDT electrode 5.
- the IDT electrode 5 and the electrode lands 6a and 6b are made of Al in the present embodiment.
- the IDT electrode 5 and the electrode lands 6a and 6b are each composed of an appropriate metal such as Al, Cu, Pt, Au, Ag, Ti, Ni, Cr, Mo, W, or an alloy mainly composed of these metals. can do.
- the IDT electrode 5 and the electrode lands 6a and 6b may be formed of a laminated metal film formed by laminating a plurality of metal films.
- the number of acoustic impedance layers is at least four or more, so that the plate wave can be efficiently confined.
- the bonding layer 9 is located at the interface between the third acoustic impedance layer 3e and the fourth acoustic impedance layer 3d from the piezoelectric substrate 4 side to the support substrate 2 side. Yes. Therefore, when the piezoelectric substrate 4 and the support substrate 2 are bonded together during manufacturing, the piezoelectric substrate 4 is unlikely to warp. In the acoustic wave device 1 finally obtained, the warp of the piezoelectric substrate 4 hardly occurs. Therefore, it is difficult for the characteristics to deteriorate. This will be described more specifically by explaining the following manufacturing method.
- a method of manufacturing the acoustic wave device 1 is not particularly limited, but an example will be described with reference to FIGS. 4 (a) to 4 (d).
- a piezoelectric substrate 4A and a support substrate 2 are prepared.
- a low acoustic impedance layer 3g made of SiO 2 is formed on one main surface of the piezoelectric substrate 4A.
- a high acoustic impedance layer 3f made of SiN and a low acoustic impedance layer 3e made of SiO 2 are laminated in this order on the low acoustic impedance layer 3g. Thereby, a laminated film is formed on the piezoelectric substrate 4A.
- two low acoustic impedance layers 3a and 3c made of SiO 2 and two high acoustic impedance layers 3b and 3d made of SiN are made of SiO 2 on one main surface of the support substrate 2.
- the low acoustic impedance layers 3a are alternately stacked in order. Thereby, a laminated film is formed on the support substrate 2.
- a high acoustic impedance layer 3d made of at least SiN may be provided on the uppermost layer of the laminated film.
- the acoustic wave device 1 having four acoustic impedance layers can be obtained by combining with the three acoustic impedance layers on the piezoelectric substrate 4A.
- an acoustic impedance layer may be provided as in this embodiment, or another layer may be provided.
- a layer made of TiO 2 can be provided as the other layer.
- a plate made of LiNbO 3 is used as the piezoelectric substrate 4A.
- a plate made of another piezoelectric single crystal such as LiTaO 3 may be used, or a plate made of piezoelectric ceramics may be used.
- Si is used as the support substrate 2.
- piezoelectric materials such as sapphire, LiTaO 3 , LiNbO 3 , quartz, alumina, magnesia, silicon nitride, aluminum nitride, silicon oxide, aluminum oxide, silicon carbide, zirconia, cordierite, mullite, steatite
- various ceramics such as forsterite or dielectrics such as glass, semiconductors such as silicon and gallium nitride, or resins can be used.
- the low acoustic impedance layers 3a, 3c, 3e, 3g and the high acoustic impedance layers 3b, 3d, 3f can be formed by a method such as sputtering, vapor deposition, or CVD.
- the thicknesses of the low acoustic impedance layers 3a, 3c, 3e, and 3g and the high acoustic impedance layers 3b, 3d, and 3f are not particularly limited, and can be about 50 nm to 2000 nm, respectively.
- the acoustic impedance layer may be appropriately patterned.
- the surface of the low acoustic impedance layer 3e serving as the bonding surface of the laminated film laminated on the piezoelectric substrate 4A and the surface of the high acoustic impedance layer 3d serving as the bonding surface of the laminated film laminated on the support substrate 2 are arranged. Grind. After the polishing, as shown in FIG. 4B, the piezoelectric substrate 4A and the support substrate 2 each provided with a laminated film are bonded.
- the outermost low acoustic impedance layer 3e of the multilayer film on the piezoelectric substrate 4A and the uppermost high acoustic impedance layer 3d of the multilayer film on the support substrate 2 are arranged.
- a bonding film made of Ti for forming the bonding layer 9 (not shown) is sandwiched and bonded by diffusion bonding.
- the bonding method may be hydrophilic bonding or activated bonding.
- the piezoelectric substrate 4A is thinned to such an extent that a plate wave can be excited to obtain the piezoelectric substrate 4.
- the thickness of the piezoelectric substrate 4 is preferably 1 ⁇ m or less.
- heat treatment is performed at a temperature of about 300 ° C. to oxidize and insulate the bonding film made of Ti.
- the IDT electrode 5 and the electrode lands 6a and 6b are formed on the main surface of the piezoelectric substrate 4 opposite to the acoustic multilayer film 3 to obtain the acoustic wave device 1. .
- the IDT electrode 5 and the electrode lands 6a and 6b can be formed by, for example, a vapor deposition lift-off method.
- the thickness of the IDT electrode 5 is not particularly limited, but can be 10 to 2000 nm.
- the thickness of the electrode lands 6a and 6b is not particularly limited, but can be 100 to 2000 nm.
- the IDT electrode 5 is formed of a laminated metal film in which Ti and AlCu (Cu 1%) are laminated in this order. Further, the electrode lands 6a and 6b were formed of a laminated metal film in which Ti and Al were laminated in this order.
- FIG. 5 is a diagram showing the relationship between the number of stacked acoustic impedance layers and the amount of warpage of the piezoelectric substrate when an X-cut-LiNbO 3 substrate is used as the piezoelectric substrate.
- the number of acoustic impedance layers stacked is the number of acoustic impedance layers stacked on the piezoelectric substrate 4 ⁇ / b> A before being bonded to the support substrate 2.
- the warpage amount is the warpage amount of the piezoelectric substrate 4 ⁇ / b> A having a diameter of 4 inches when bonded to the support substrate 2.
- the number of stacked acoustic impedance layer is less than three layers, Y-axis direction of the piezoelectric substrate 4A (LiNbO 3 substrate), and in either direction in the Z-axis direction of the piezoelectric substrate 4A (LiNbO 3 substrate), a piezoelectric substrate
- the warpage amount of 4A is 150 ⁇ m or less, which is within a range in which problems do not easily occur when the substrates are bonded.
- the number of stacked layers is four or more, the amount of warpage in the Y-axis direction is larger than 150 ⁇ m. Therefore, when the number of acoustic impedance layers between the piezoelectric substrate 4A and the support substrate 2 is four or more, the third layer is laminated on the piezoelectric substrate 4A side, and the other layers are supported on the support substrate. What is necessary is just to laminate
- the number of acoustic impedance layers laminated on the piezoelectric substrate 4A side may be three or less. That is, in the produced acoustic wave device 1, the bonding layer 9 is provided at any position from the piezoelectric substrate 4 side toward the support substrate 2 side to the interface between the third and fourth acoustic impedance layers 3e and 3d. You can make it. In this case, since a large film stress is not applied to the piezoelectric substrate 4A, it is possible to make it difficult for the piezoelectric substrate 4A to warp when the piezoelectric substrate 4A and the support substrate 2 are bonded together.
- the piezoelectric substrate 4A and the support substrate 2 can be easily joined.
- the stress applied to the piezoelectric substrate 4 after the thin plate is reduced, and the warp of the piezoelectric substrate 4 after the thin plate can be made difficult to occur. Therefore, in the present invention, the warping back process of the piezoelectric substrate 4 is not required. From the viewpoint of further suppressing the warpage of the piezoelectric substrate 4, it is preferable that the position of the bonding layer 9 is closer to the piezoelectric substrate 4.
- the bonding layer 9 is not provided directly below the piezoelectric substrate 4. That is, in the acoustic wave device 1, the bonding layer 9 is not provided at the interface between the piezoelectric substrate 4 and the low acoustic impedance layer 3g. Therefore, the elastic wave device 1 is unlikely to deteriorate in characteristics. This will be described below based on Experimental Example 3.
- an acoustic wave device 1 that is a 1-port acoustic wave resonator was manufactured under the following conditions, and an S 0 mode plate wave was excited.
- Support substrate 2 Si substrate Low acoustic impedance layer 3a ... SiO 2 , film thickness: 0.4 ⁇ High acoustic impedance layer 3b ... SiN, film thickness: 0.11 ⁇ Low acoustic impedance layer 3c ... SiO 2 , film thickness: 0.1 ⁇ High acoustic impedance layer 3d ... SiN, film thickness: 0.11 ⁇ Low acoustic impedance layer 3e ... SiO 2 , film thickness: 0.1 ⁇ High acoustic impedance layer 3f ... SiN, film thickness: 0.11 ⁇ Low acoustic impedance layer 3g ...
- FIG. 6 is a diagram showing the relationship between the bonding position of the bonding layer and the impedance ratio (Za / Zr).
- the bonding position of the bonding layer 9 indicates how many acoustic impedance layers are provided from the piezoelectric substrate 4 toward the support substrate 2.
- the 0th layer indicates that the bonding layer 9 is located at the interface between the piezoelectric substrate 4 and the low acoustic impedance layer 3g.
- the bonding position is changed from the first layer from the piezoelectric substrate 4 side to the support substrate 2 side (that is, the bonding position is formed from the piezoelectric substrate 4 side to the second and subsequent layers). It can be seen that the characteristics are improved as compared with the case of the 0th layer.
- FIG. 7 is a diagram showing resonance characteristics when a bonding layer is provided on the first acoustic impedance layer from the piezoelectric substrate side.
- the solid line indicates the result when the bonding layer 9 is provided on the first acoustic impedance layer 3g from the piezoelectric substrate 4 side.
- the result when the bonding layer 9 is provided on the 0th acoustic impedance layer is shown by a broken line. That is, the result when the bonding layer 9 is provided at the interface between the piezoelectric substrate 4 and the first acoustic impedance layer 3g is shown.
- the bonding position is the first layer from the piezoelectric substrate 4 side, the interface between the first layer and the second layer, or the support substrate 2 side from the first layer, so that the bonding position is the 0th layer from the piezoelectric substrate 4 side. It can be seen that the characteristics are improved compared to some cases.
- the number of acoustic impedance layers laminated on the piezoelectric substrate 4A side is set to three or less, so that the piezoelectric substrate 4A The amount of warpage can be reduced.
- the bonding position is formed from the first acoustic impedance layer to the boundary surface between the third acoustic impedance layer and the fourth acoustic impedance layer from the piezoelectric substrate.
- both the characteristic surface and the warpage amount of the piezoelectric substrate can be improved.
- FIG. 8 is a partially cutaway schematic cross-sectional view showing an enlarged main part of an acoustic wave device according to the second embodiment of the present invention.
- the low acoustic impedance layer 3 g has a structure in which the low acoustic impedance layer portion 3 g 1 and the low acoustic impedance layer portion 3 g 2 are joined by the joining layer 9. Accordingly, the bonding layer 9 is located in the low acoustic impedance layer 3g.
- the low acoustic impedance layer portion 3g1 and the low acoustic impedance layer portion 3g2 can be made of the same material as the low acoustic impedance layers 3a, 3c, and 3e. Other points are the same as in the first embodiment.
- the acoustic wave device of the second embodiment When manufacturing the acoustic wave device of the second embodiment, it can be manufactured by the same method as the manufacturing method of the first embodiment. Specifically, the low acoustic impedance layer portion 3g2 is laminated on the piezoelectric substrate 4A, and the other portions are laminated on the support substrate 2. Subsequently, the low acoustic impedance layer portion 3g2 on the piezoelectric substrate 4A and the low acoustic impedance layer portion 3g1 which is the uppermost layer of the laminated film on the support substrate 2 are joined by the same method as in the first embodiment. Can be manufactured.
- the bonding layer is provided in the first acoustic impedance layer from the piezoelectric substrate side to the support substrate side, the piezoelectric substrate is hardly warped and the characteristics are deteriorated. hard.
- the bonding layer 9 is one of the acoustic impedance layers of the first to third acoustic impedance layers from the piezoelectric substrate 4 side toward the support substrate 2 side. It may be provided in the layer. Further, like the acoustic wave device 1 of the first embodiment, the bonding layer 9 is adjacent to each other among the acoustic impedance layers from the first layer to the fourth layer from the piezoelectric substrate 4 side to the support substrate 2 side. It may be provided at the interface between any two acoustic impedance layers.
- bonding is performed at any position from the first acoustic impedance layer to the interface between the third and fourth acoustic impedance layers from the piezoelectric substrate side to the support substrate side. Since the layer is provided, the piezoelectric substrate is unlikely to warp and the characteristics are not easily deteriorated.
- the elastic wave device of the present invention is widely used in various electronic devices and communication devices.
- the electronic device include a sensor.
- a duplexer including the elastic wave device of the present invention a communication module device including the elastic wave device of the present invention and PA (Power Amplifier) and / or LNA (Low Noise Amplifier) and / or SW (Switch).
- PA Power Amplifier
- LNA Low Noise Amplifier
- SW SW
- mobile communication devices and healthcare communication devices including the communication module devices. Examples of mobile communication devices include mobile phones, smartphones, car navigation systems, and the like. Examples of health care communication devices include a weight scale and a body fat scale. Health care communication devices and mobile communication devices include an antenna, an RF module, an LSI, a display, an input unit, a power source, and the like.
Abstract
Description
図1(a)は、本発明の第1の実施形態に係る弾性波装置の模式的正面断面図であり、図1(b)は、その電極構造を示す模式的平面図である。また、図2は、本発明の第1の実施形態に係る弾性波装置の要部を拡大して示す部分切欠模式的断面図である。
音響多層膜3…積層数:2層、4層又は6層、低音響インピーダンス層:SiO2、高音響インピーダンス層:Pt、各層の膜厚:SiO2…240nm、Pt…150nm
圧電基板4…Xカット-LiNbO3{オイラー角(90°,90°,40°)}
IDT電極5…AlCu(Cu1%)/Ti、デュ-ティー比:0.5、電極指の対数:100対、交差幅:25μm、電極指ピッチで定まる波長(λ):1.7μm
弾性波装置1の製造方法は、特に限定されないが、一例を図4(a)~図4(d)を参照して説明する。
低音響インピーダンス層3a…SiO2、膜厚:0.4λ
高音響インピーダンス層3b…SiN、膜厚:0.11λ
低音響インピーダンス層3c…SiO2、膜厚:0.1λ
高音響インピーダンス層3d…SiN、膜厚:0.11λ
低音響インピーダンス層3e…SiO2、膜厚:0.1λ
高音響インピーダンス層3f…SiN、膜厚:0.11λ
低音響インピーダンス層3g…SiO2、膜厚:0.1λ
接合層9…エポキシ樹脂、膜厚:0.05λ
圧電基板4…LiNbO3{オイラー角(90°,90°,40°)}、膜厚:0.2λ
IDT電極5…Al、膜厚:0.07λ、デューティー比:0.5、電極指ピッチで定まる波長(λ):1.0μm
図8は、本発明の第2の実施形態に係る弾性波装置の要部を拡大して示す部分切欠模式的断面図である。図8に示すように、第2の実施形態においては、低音響インピーダンス層3gが、低音響インピーダンス層部分3g1と、低音響インピーダンス層部分3g2とを接合層9で接合した構造を有する。従って、接合層9は、低音響インピーダンス層3g中に位置している。低音響インピーダンス層部分3g1と、低音響インピーダンス層部分3g2とは、低音響インピーダンス層3a,3c,3eと同じ材料により構成することができる。その他の点は、第1の実施形態と同様である。
2…支持基板
3…音響多層膜
3a,3c,3e,3g…低音響インピーダンス層
3g1,3g2…低音響インピーダンス層部分
3b,3d,3f…高音響インピーダンス層
4,4A…圧電基板
5…IDT電極
6a,6b…電極ランド
7,8…反射器
9…接合層
Claims (9)
- 支持基板と、
前記支持基板上に設けられた音響多層膜と、
前記音響多層膜上に設けられた圧電基板と、
前記圧電基板上に設けられたIDT電極と、
を備え、
前記圧電基板の熱膨張係数の絶対値が、前記支持基板の熱膨張係数の絶対値より大きく、
前記音響多層膜が、少なくとも4層の音響インピーダンス層を有し、
前記少なくとも4層の音響インピーダンス層が、少なくとも1層の低音響インピーダンス層と、該低音響インピーダンス層よりも音響インピーダンスが高い、少なくとも1層の高音響インピーダンス層とにより構成されており、
前記圧電基板側から前記支持基板側へ向かって1層目の前記音響インピーダンス層中から、3層目の前記音響インピーダンス層と4層目の前記音響インピーダンス層との界面、までのいずれかの位置に設けられている接合層をさらに備える、弾性波装置。 - 前記接合層が、前記圧電基板側から前記支持基板側へ向かって1層目から3層目までの前記音響インピーダンス層のうち、いずれかの音響インピーダンス層中に設けられている、請求項1に記載の弾性波装置。
- 前記接合層が、前記圧電基板側から前記支持基板側へ向かって1層目から4層目までの前記音響インピーダンス層のうち、互いに隣接しているいずれか2層の音響インピーダンス層間の界面に設けられている、請求項1に記載の弾性波装置。
- 伝搬する弾性波として、S0モード、A0モード、A1モード、SH0モード、又は、SH1モードの板波を利用している、請求項1~3のいずれか1項に記載の弾性波装置。
- 前記接合層の厚みが、5nm以下である、請求項1~4のいずれか1項に記載の弾性波装置。
- 前記接合層が、絶縁層を兼ねている、請求項1~5のいずれか1項に記載の弾性波装置。
- 前記支持基板が、ガラス又はSiにより構成されており、かつ前記圧電基板が、LiNbO3又はLiTaO3により構成されている、請求項1~6のいずれか1項に記載の弾性波装置。
- 前記低音響インピーダンス層が、酸化ケイ素により構成されている、請求項1~7のいずれか1項に記載の弾性波装置。
- 前記高音響インピーダンス層が、タングステン、白金、タンタル、窒化ケイ素又は窒化アルミニウムにより構成されている、請求項1~8のいずれか1項に記載の弾性波装置。
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110120794A (zh) * | 2018-02-07 | 2019-08-13 | 株式会社村田制作所 | 弹性波装置、高频前端电路以及通信装置 |
KR20200043455A (ko) * | 2017-09-27 | 2020-04-27 | 가부시키가이샤 무라타 세이사쿠쇼 | 탄성파 장치 및 탄성파 장치의 제조 방법 |
JP2022519148A (ja) * | 2020-01-08 | 2022-03-22 | 中芯集成電路(寧波)有限公司 | 音響波共振器を作製するための複合基板、および表面音響波共振器および作製方法 |
US11894828B2 (en) | 2018-04-18 | 2024-02-06 | Skyworks Solutions, Inc. | Boundary acoustic wave device |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112017001553B4 (de) * | 2016-03-25 | 2020-06-18 | Ngk Insulators, Ltd. | Verbundener Körper und Elastikwellenelement |
EP3878097A1 (en) * | 2018-11-13 | 2021-09-15 | Huawei Technologies Co., Ltd. | Surface acoustic wave device with phononic crystal |
WO2020116528A1 (ja) * | 2018-12-06 | 2020-06-11 | 株式会社村田製作所 | 弾性波装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012086441A1 (ja) * | 2010-12-24 | 2012-06-28 | 株式会社村田製作所 | 弾性波装置及びその製造方法 |
JP2013223025A (ja) * | 2012-04-13 | 2013-10-28 | Taiyo Yuden Co Ltd | フィルタ装置、フィルタ装置の製造方法及びデュプレクサ |
JP2013258373A (ja) * | 2012-06-14 | 2013-12-26 | Sumitomo Electric Ind Ltd | 複合基板およびその製造方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08130434A (ja) * | 1994-11-01 | 1996-05-21 | Clarion Co Ltd | 弾性表面波素子 |
WO2009023100A2 (en) | 2007-08-14 | 2009-02-19 | Skyworks Solutions, Inc. | Method for forming a multi-layer electrode underlying a piezoelectric layer and related structure |
JPWO2010122993A1 (ja) * | 2009-04-22 | 2012-10-25 | 株式会社村田製作所 | 弾性境界波装置及びその製造方法 |
KR20110020741A (ko) | 2009-08-24 | 2011-03-03 | 엔지케이 인슐레이터 엘티디 | 복합 기판의 제조 방법 |
JP5447682B2 (ja) | 2010-09-28 | 2014-03-19 | 株式会社村田製作所 | 圧電デバイスの製造方法 |
KR101623099B1 (ko) * | 2010-12-24 | 2016-05-20 | 가부시키가이샤 무라타 세이사쿠쇼 | 탄성파 장치 및 그 제조 방법 |
EP2738939B1 (en) * | 2011-07-29 | 2018-12-05 | Murata Manufacturing Co., Ltd. | Piezoelectric device and method of manufacturing piezoelectric device |
CN103891139B (zh) * | 2011-10-24 | 2016-08-24 | 株式会社村田制作所 | 弹性表面波装置 |
CN202998019U (zh) * | 2012-11-08 | 2013-06-12 | 日本碍子株式会社 | 弹性波滤波器及具备该弹性波滤波器的弹性波装置 |
JP6318682B2 (ja) * | 2014-02-19 | 2018-05-09 | セイコーエプソン株式会社 | 圧電アクチュエーター、及び液体噴射ヘッド |
-
2016
- 2016-07-25 KR KR1020187008001A patent/KR102111928B1/ko active IP Right Grant
- 2016-07-25 CN CN201680055300.7A patent/CN108028636A/zh active Pending
- 2016-07-25 WO PCT/JP2016/071725 patent/WO2017068828A1/ja active Application Filing
-
2018
- 2018-03-16 US US15/922,960 patent/US11770111B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012086441A1 (ja) * | 2010-12-24 | 2012-06-28 | 株式会社村田製作所 | 弾性波装置及びその製造方法 |
JP2013223025A (ja) * | 2012-04-13 | 2013-10-28 | Taiyo Yuden Co Ltd | フィルタ装置、フィルタ装置の製造方法及びデュプレクサ |
JP2013258373A (ja) * | 2012-06-14 | 2013-12-26 | Sumitomo Electric Ind Ltd | 複合基板およびその製造方法 |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200043455A (ko) * | 2017-09-27 | 2020-04-27 | 가부시키가이샤 무라타 세이사쿠쇼 | 탄성파 장치 및 탄성파 장치의 제조 방법 |
KR102374795B1 (ko) | 2017-09-27 | 2022-03-16 | 가부시키가이샤 무라타 세이사쿠쇼 | 탄성파 장치 및 탄성파 장치의 제조 방법 |
CN110120794A (zh) * | 2018-02-07 | 2019-08-13 | 株式会社村田制作所 | 弹性波装置、高频前端电路以及通信装置 |
KR20190095876A (ko) * | 2018-02-07 | 2019-08-16 | 가부시키가이샤 무라타 세이사쿠쇼 | 탄성파 장치, 고주파 프론트 엔드 회로 및 통신 장치 |
KR102458076B1 (ko) * | 2018-02-07 | 2022-10-24 | 가부시키가이샤 무라타 세이사쿠쇼 | 탄성파 장치, 고주파 프론트 엔드 회로 및 통신 장치 |
CN110120794B (zh) * | 2018-02-07 | 2023-06-27 | 株式会社村田制作所 | 弹性波装置、高频前端电路以及通信装置 |
US11764755B2 (en) | 2018-02-07 | 2023-09-19 | Murata Manufacturing Co., Ltd. | Elastic wave device, radio-frequency front-end circuit, and communication apparatus |
US11894828B2 (en) | 2018-04-18 | 2024-02-06 | Skyworks Solutions, Inc. | Boundary acoustic wave device |
JP2022519148A (ja) * | 2020-01-08 | 2022-03-22 | 中芯集成電路(寧波)有限公司 | 音響波共振器を作製するための複合基板、および表面音響波共振器および作製方法 |
JP7291219B2 (ja) | 2020-01-08 | 2023-06-14 | 中芯集成電路(寧波)有限公司 | 音響波共振器を作製するための複合基板、および表面音響波共振器および作製方法 |
Also Published As
Publication number | Publication date |
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CN108028636A (zh) | 2018-05-11 |
US11770111B2 (en) | 2023-09-26 |
US20180205361A1 (en) | 2018-07-19 |
KR20180041738A (ko) | 2018-04-24 |
KR102111928B1 (ko) | 2020-05-18 |
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