WO2014178308A1 - 水晶振動装置及びその製造方法 - Google Patents
水晶振動装置及びその製造方法 Download PDFInfo
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- WO2014178308A1 WO2014178308A1 PCT/JP2014/061292 JP2014061292W WO2014178308A1 WO 2014178308 A1 WO2014178308 A1 WO 2014178308A1 JP 2014061292 W JP2014061292 W JP 2014061292W WO 2014178308 A1 WO2014178308 A1 WO 2014178308A1
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- crystal
- conductive adhesive
- crystal resonator
- adhesive layers
- mounting surface
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- 239000013078 crystal Substances 0.000 title claims abstract description 211
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 4
- 230000010355 oscillation Effects 0.000 title abstract 4
- 239000000758 substrate Substances 0.000 claims abstract description 87
- 239000012790 adhesive layer Substances 0.000 claims description 144
- 239000010453 quartz Substances 0.000 claims description 54
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 54
- 239000000463 material Substances 0.000 claims description 43
- 239000000853 adhesive Substances 0.000 claims description 23
- 230000001070 adhesive effect Effects 0.000 claims description 23
- 239000004020 conductor Substances 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 238000013459 approach Methods 0.000 claims description 3
- 239000005022 packaging material Substances 0.000 claims 3
- 238000000605 extraction Methods 0.000 description 15
- 238000012986 modification Methods 0.000 description 9
- 230000004048 modification Effects 0.000 description 9
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
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Classifications
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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 devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/10—Mounting in enclosures
-
- 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
- H03H9/05—Holders; Supports
- H03H9/0504—Holders; Supports for bulk acoustic wave devices
- H03H9/0509—Holders; Supports for bulk acoustic wave devices consisting of adhesive elements
-
- 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
- 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
- H03H9/05—Holders; Supports
- H03H9/10—Mounting in enclosures
- H03H9/1007—Mounting in enclosures for bulk acoustic wave [BAW] devices
- H03H9/1014—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device
- H03H9/1021—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device the BAW device being of the cantilever type
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
Definitions
- the present invention relates to a crystal resonator device having a structure in which a crystal resonator is supported by a cantilever on a crystal resonator mounting surface of a package material. More specifically, the present invention relates to a crystal vibration device in which a crystal resonator is bonded to a package material using a conductive adhesive.
- Patent Document 1 discloses a crystal vibration device in which a crystal resonator is supported by a cantilever in a package.
- the package includes a container body having an opening opened upward. The opening of the container body is closed by a cover. As a result, the interior is hollow.
- a crystal resonator is bonded to the inner bottom surface of the container body using a conductive adhesive and supported by a cantilever beam.
- the 1st and 2nd attachment electrode is provided in the inner bottom face of the container main body.
- first and second extraction electrodes are provided on the lower surface of the crystal unit. The first and second extraction electrodes are electrically connected to the first and second excitation electrodes.
- the first and second lead electrodes are joined to the first and second attachment electrodes by a conductive adhesive, respectively.
- the conventional crystal vibration device described in Patent Document 1 has a problem that the vibration frequency changes when it is accidentally dropped and an impact is applied.
- the electrical and mechanical joints sometimes break. In other words, there is a risk of breakage at the joint between the lead electrode of the crystal resonator and the conductive adhesive, or at the joint between the conductive adhesive and the mounting electrode.
- the crystal resonator is supported by a cantilever beam. Therefore, the end opposite to the side fixed with the conductive adhesive is a free end. For this reason, when a drop impact or the like is applied, the free end vibrates and a large stress may be applied to the joint portion using the conductive adhesive. Therefore, when a drop impact is applied, the vibration frequency may change greatly as described above.
- An object of the present invention is to provide a crystal vibration device that can suppress a change in vibration frequency due to a drop impact or the like and breakage of electrical and mechanical connection portions without causing an increase in crystal impedance.
- a package material having a crystal resonator mounting surface, first and second electrode lands provided on the crystal resonator mounting surface of the package material, and a crystal of the package material
- First and second conductive adhesive layers that are connected and mechanically joined to each other, wherein the crystal resonator includes a crystal substrate, and first and second vibrating electrodes provided on the crystal substrate And first and second lead electrodes connected to the first and second vibrating electrodes, respectively, and the first and second lead electrodes have the first and second conductive properties.
- the first and second electrode runs Are electrically and mechanically connected to each other, and each of the first and second conductive adhesive layers has a planar shape in which two circles or ellipses partially overlap each other in plan view.
- a crystal vibration device is provided.
- a package material having a crystal resonator mounting surface, first and second electrode lands provided on the crystal resonator mounting surface of the package material, and the package material
- a first and second conductive adhesive layers connected to each other and mechanically bonded to each other, wherein the crystal resonator includes a crystal substrate and first and second vibrations provided on the crystal substrate.
- the first and second electrode runs are formed by a conductive adhesive layer. Each of which is electrically and mechanically connected, and the first and second conductive adhesive layers each have two conductive adhesive layer portions separated from each other. Provided.
- a package material having a crystal resonator mounting surface, first and second electrode lands provided on the crystal resonator mounting surface of the package material, and the package material
- a first and second conductive adhesive layers connected to each other and mechanically bonded to each other, wherein the crystal resonator includes a crystal substrate and first and second vibrations provided on the crystal substrate.
- the first and second electrode runs are formed by a conductive adhesive layer. Are electrically and mechanically connected to each other, and the first and second conductive adhesive layers have a length direction, and are orthogonal to the lengthwise maximum dimension and the lengthwise maximum dimension.
- a quartz crystal vibrating device having an aspect ratio which is a ratio with a maximum dimension in a width direction of 1.5 or more and 3.0 or less.
- the crystal substrate of the crystal resonator has a rectangular plate shape having a pair of long sides and a pair of short sides, and the extending direction of the short sides is In the width direction, on one short side, the crystal resonator is supported by the first and second conductive adhesive layers in a cantilever manner.
- the center of gravity of the first and second conductive adhesive layers is wider than the center of the first and second conductive adhesive layers. Located on the outside.
- the crystal oscillating device in still another specific aspect of the crystal oscillating device according to the present invention, as the planar shape of the first and second conductive adhesive layers goes from the inner side to the outer side in the width direction, the crystal from the short side is increased.
- the shape approaches the center of the substrate.
- the first and second electrode lands are thicker on the outer side in the width direction than on the inner side in the width direction.
- a part of the first and second conductive adhesive layers is directly bonded to the surface of the quartz crystal substrate.
- the first and second conductive adhesive layers include an epoxy resin and a conductive material.
- the manufacturing method according to the present invention includes the following steps.
- Step of preparing a package material in which the first and second electrode lands are formed on the crystal resonator mounting surface Step of preparing a package material in which the first and second electrode lands are formed on the crystal resonator mounting surface.
- the first and second electrodes of the package material are formed by using the first and second conductive adhesives for the portions of the first and second lead electrodes of the crystal resonator located on the lower surface of the crystal substrate.
- the first and second conductive adhesive layers are formed at two locations, respectively. Apply conductive adhesive.
- the first and second conductive adhesive layers are configured as described above, even when a drop impact or the like is applied, a change in vibration frequency hardly occurs, and Breakage of electrical and mechanical joints is unlikely to occur. Therefore, the impact resistance can be improved by increasing the bonding area of the conductive adhesive layer.
- the junction region is defined so as to avoid the vibration region, it is difficult to increase the crystal impedance.
- FIG. 1 is an exploded perspective view of the quartz crystal vibration device according to the first embodiment of the present invention.
- FIG. 2 is a perspective view showing the positional relationship between the electrode shape on the lower surface of the crystal resonator and the first and second conductive adhesive layers in the crystal resonator device according to the first embodiment. It is a schematic plan view to show.
- FIG. 3 is a schematic partial cutaway cross-sectional view for explaining a joint portion formed by the first conductive adhesive layer in the crystal resonator device according to the first embodiment.
- FIG. 4 is a perspective view showing a crystal resonator according to a modification of the first embodiment of the present invention.
- FIG. 5 is a schematic partial cutaway cross-sectional view for explaining a joint portion formed by the first conductive adhesive layer in the crystal resonator device using the crystal resonator according to the modification shown in FIG.
- FIG. 6 shows the positional relationship between the electrode structure on the lower surface of the crystal resonator used in the crystal resonator device of the third embodiment of the present invention and the first and second conductive adhesive layers from above.
- It is a schematic plan view which shows a board
- FIG. 5 is a schematic plan view showing the transparent and the schematic view for explaining the aspect ratio of the conductive adhesive layer.
- FIG. 8 shows the positional relationship between the electrode structure on the lower surface of the crystal resonator used in the crystal resonator device of the third embodiment of the present invention and the first and second conductive adhesive layers from above. It is a schematic plan view which shows a board
- FIG. 9 shows the positional relationship between the electrode structure on the lower surface of the crystal resonator used in the crystal oscillator of the fourth embodiment of the present invention and the first and second conductive adhesive layers from above. It is a schematic plan view which shows a board
- FIG. 8 shows the positional relationship between the electrode structure on the lower surface of the crystal resonator used in the crystal resonator device of the third embodiment of the present invention and the first and second conductive adhesive layers from above. It is a schematic plan view which shows a board
- FIG. 10 shows the positional relationship between the electrode structure on the lower surface of the crystal resonator used in the crystal resonator device of the fifth embodiment of the present invention and the first and second conductive adhesive layers from above. It is a schematic plan view which shows a board
- FIG. 11 shows the positional relationship between the electrode structure on the lower surface of the crystal resonator used in the crystal resonator device of the sixth embodiment of the present invention and the first and second conductive adhesive layers from above. It is a schematic plan view which shows a board
- FIG. 12 shows the positional relationship between the electrode structure on the lower surface of the crystal resonator used in the crystal resonator device of the seventh embodiment of the present invention and the first and second conductive adhesive layers from above.
- FIG. 13 shows the positional relationship between the electrode structure on the lower surface of the crystal resonator and the first and second conductive adhesive layers for explaining a modification of the crystal resonator mounting structure. It is a typical top view shown through.
- FIG. 1 is an exploded perspective view of a quartz crystal vibration device according to a first embodiment of the present invention.
- the crystal vibration device 1 has a case substrate 2 as a package material.
- the upper surface of the case substrate 2 is a crystal resonator mounting surface of a crystal resonator described later.
- the case substrate 2 is made of an appropriate insulating material such as insulating ceramics such as alumina or synthetic resin.
- First and second electrode lands 3 and 4 are formed on the crystal resonator mounting surface 2 a of the case substrate 2.
- the first and second electrode lands 3 and 4 are made of an appropriate metal or alloy such as Au, Ag, Cu, Al, or Ni.
- the crystal unit 7 is supported by cantilever beams by the first and second conductive adhesive layers 5 and 6.
- the crystal resonator 7 is surrounded by a cap material 8 and stored in a package.
- the cap material 8 is made of metal. But the cap material 8 can be comprised with appropriate materials other than a metal.
- the cap material 8 has an opening that opens downward. The edge of the opening is bonded to the crystal resonator mounting surface 2a of the case substrate 2 with an insulating adhesive or the like. As a result, a package having a hollow structure is formed.
- the crystal resonator 7 has a crystal substrate 9.
- the quartz substrate 9 has a rectangular plate shape. That is, the upper surface has a pair of long sides and a pair of short sides. The direction in which the long side extends is the length direction.
- the quartz crystal resonator 7 is supported in a cantilever manner by the first and second conductive adhesive layers 5 and 6 in the vicinity of one short side. That is, the crystal unit 7 is supported on one short side, and the other short side is a free end.
- the first and second conductive adhesive layers 5 and 6 can be formed using a conductive adhesive obtained by dispersing an appropriate conductive material in an appropriate synthetic resin. It is preferable to use an epoxy resin and an epoxy resin-based conductive adhesive in which a conductive material is dispersed in the epoxy resin. In that case, the bonding strength can be further increased sufficiently.
- a first vibrating electrode 10 is formed on the upper surface of the quartz substrate 9.
- a second vibrating electrode 11 shown in FIG. 2 is formed on the lower surface of the quartz substrate 9.
- the first and second vibrating electrodes 10 and 11 are provided so as to overlap with each other through the quartz substrate 9.
- the first and second vibrating electrodes 10 and 11 are partially formed on the upper and lower surfaces of the quartz substrate 9.
- the first extraction electrode 12 is connected to the first vibration electrode 10.
- the first extraction electrode 12 extends from the upper surface of the quartz substrate 9 to the lower surface via one short side surface and one long side surface. That is, the extraction electrode portion 12 a shown in FIG. 2 is located on the lower surface of the quartz substrate 9.
- a second extraction electrode 13 is connected to the second vibrating electrode 11.
- the second lead electrode 13 has a lead electrode portion 13 a on one short side of the quartz substrate 9.
- the lead electrode portion 12 a and the lead electrode portion 13 a are located on both sides in the width direction on the lower surface of the crystal substrate 9.
- the lead electrode portions 12a and 13a correspond to portions joined by the conductive adhesive layers 5 and 6, respectively.
- the crystal resonator 7 is mounted on the crystal resonator mounting surface 2a of the case substrate 2, but the case substrate 2 also has a rectangular planar shape. Then, the crystal unit 7 is mounted on the case substrate 2 so that the width direction of the crystal substrate 9 is also the width direction of the case substrate 2.
- the first electrode land 3 has an electrode land portion 3a having a relatively thick thickness and an electrode land portion 3b having a relatively thin thickness.
- the electrode land portion 3a and the electrode land portion 3b are connected in the width direction, and the electrode land portion 3a is located on the outer side in the width direction.
- the second electrode land 4 also has a relatively thick electrode land portion 4a and a relatively thin electrode land portion 4b.
- the electrode land portion 4a is located on the outer side in the width direction than the electrode land portion 4b.
- the electrode land portions 3a, 3b, 4a, 4b can be formed by the following method, for example. First, a conductive paste is printed and temporarily cured at portions corresponding to the electrode land portions 3a, 3b, 4a, and 4b. Next, the conductive paste is printed again at the portions corresponding to the electrode land portions 3a and 4a, and temporarily cured. Thereafter, all the conductive paste on the electrode land portions 3a, 3b, 4a, 4b is cured.
- the first conductive adhesive layer 5 has conductive adhesive layer portions 5a and 5b.
- the conductive adhesive layer portion 5a is located on the outer side in the width direction
- the conductive adhesive layer portion 5b is located on the inner side in the width direction.
- the conductive adhesive layer portion 5 a joins the electrode land portion 3 a of the electrode land 3 to the extraction electrode portion 12 a of the extraction electrode 12.
- the conductive adhesive layer portion 5b connects the lead electrode portion 12a to the electrode land portion 3b. That is, as shown in FIG. 3, the electrode land portion 3a located on the outer side in the width direction of the case substrate 2 is joined to the lead electrode portion 12a by the conductive adhesive layer portion 5a.
- the electrode lands 3 and 4, the first and second vibrating electrodes 10 and 11, and the first and second extraction electrodes 12 and 13 are made of an appropriate metal or alloy such as Au, Ag, Cu, Al, or Ni. .
- the crystal resonator 7 is mechanically bonded to the case substrate 2 by the first and second conductive adhesive layers 5 and 6.
- the crystal resonator 7 is electrically connected to the electrode lands 3 and 4 by the first and second conductive adhesive layers 5 and 6.
- the 1st conductive adhesive layer 5 has conductive adhesive layer part 5a, 5b.
- the 2nd conductive adhesive layer 6 has conductive adhesive layer part 6a, 6b.
- the crystal resonator 7 is bonded to the case substrate 2 by the four electrode land portions 3a, 3b, 4a, 4b and the conductive adhesive layer portions 5a, 5b, 6a, 6b.
- the crystal resonator is bonded to the case substrate by two conductive adhesive layers.
- the formation area of a conductive adhesive layer can be enlarged, and even if stress is added to a junction part, this stress is disperse
- the impact resistance is effectively enhanced. Therefore, when a drop impact or the like is applied, even if the free end of the crystal resonator 7 supported by the cantilever is swung, the joint portion is hardly deteriorated. Therefore, it is difficult for the vibration frequency to change.
- the thickness of the electrode land portions 3a and 4a on the outer side in the width direction is larger than the thickness of the electrode land portions 3b and 4b located on the inner side in the width direction. It is also thickened. Therefore, even when the crystal substrate 9 of the crystal resonator 7 is beveled, the crystal resonator 7 is firmly bonded to the electrode lands 3 and 4 by the first and second conductive adhesive layers 5 and 6. be able to.
- a modification using the quartz crystal resonator 7A on which the quartz substrate 9 is beveled will be described with reference to FIGS.
- FIG. 4 is a perspective view showing a crystal resonator 7A of this modification.
- the crystal substrate 9 is beveled. Therefore, the thickness of the quartz substrate 9 decreases as it goes from the center to the end in the length direction. Also in the width direction, the thickness decreases from the center toward the end in the width direction.
- the crystal resonator 7A is the same as the crystal resonator 7 except that the crystal substrate 9 is beveled.
- FIG. 5 is a schematic partial cutaway cross-sectional view for explaining a joint portion by a first conductive adhesive layer in a quartz crystal vibration device of a modified example in which the crystal resonator 7A is used. That is, FIG. 5 is a view corresponding to FIG. 3 shown in the first embodiment.
- the electrode land portion 3a is thicker than the electrode land portion 3b. And the upper surface changes in a curve from the electrode land portion 3a formed by applying and curing the conductive paste toward the electrode land portion 3b.
- the thickness of the conductive adhesive layers 5b and 6b laminated on the inner side in the width direction is made larger than the thickness of the conductive adhesive layers 5a and 6a.
- the conductive adhesive layer portions 5a and 5b are expanded by the force when the crystal resonator 7A is joined, and both are united.
- the conductive adhesive layers 5a and 5b may be integrated by contacting each other.
- FIG. 6 is a schematic plan view showing the positional relationship and the planar shape of the electrode shape on the lower surface of the crystal resonator and the conductive adhesive layer in the crystal resonator device of the present modification as seen through from above.
- the conductive adhesive layer 5a and the conductive adhesive layer 5b are integrated, but the conductive adhesive layer 6a and the conductive adhesive layer 6b are also united and integrated in the same manner.
- the crystal resonator 7A subjected to the bevel processing as described above is used.
- the difference in thickness between the center and both sides of the quartz crystal resonator 7A is the difference in thickness between the electrode lands 3a, 4a and the electrode lands 3b, 4b in the electrode lands 3, 4, and the conductive adhesive layer. It can be absorbed by the difference in thickness between 5a, 6a and the conductive adhesive layers 5b, 6b. Accordingly, the bonding strength can be further increased effectively.
- the first and second electrode lands may have a uniform thickness.
- FIGS. 7A and 7B show the positional relationship between the electrode shape on the lower surface of the crystal resonator and the conductive adhesive layer located below in the crystal resonator device according to the second embodiment of the present invention.
- FIG. 2 is a schematic plan view showing a quartz substrate seen through from above and a schematic diagram for explaining an aspect ratio of a conductive adhesive layer.
- the extraction electrode portions 12a and 13a are located on the lower surface of the quartz substrate 9 as in the first embodiment.
- the first conductive adhesive layer 5 and the second conductive adhesive layer 6 have a planar shape with an aspect ratio of 1.5 or more and 3.0 or less, respectively. Is to have. That is, the 1st conductive adhesive layer 5 is made into the ellipse shape which has a length direction in 2nd Embodiment. Here, the maximum dimension along the length direction is L, and the maximum dimension in the width direction orthogonal to the maximum dimension L is W. The aspect ratio is represented by L / W.
- the first conductive adhesive 5 has an oblong shape, but may have a shape having another length direction.
- the first conductive adhesive layer 5 and the second conductive adhesive layer 6 are each a single conductive adhesive layer. Therefore, the quartz substrate 9 is bonded to the case substrate 2 at two locations. Even in that case, since the aspect ratio of the first conductive adhesive layer 5 and the second conductive adhesive layer 6 is within the specific range, the impact resistance can be effectively increased. it can. That is, the length direction of the first and second conductive adhesive layers 5 and 6 having the aspect ratio of 1.5 or more is along the width direction of the quartz substrate 9. Therefore, the crystal substrate 9 is firmly bonded to the case substrate 2 by the first and second conductive adhesive layers 5 and 6.
- the aspect ratio is 3.0 or less, the dimension of the adhesive layer along the length direction of the quartz substrate 9 is sufficient, and the bonding strength can also be effectively increased. Therefore, the aspect ratio is preferably 1.5 or more and 3.0 or less.
- the bonding strength is sufficiently increased and the impact resistance is improved. Therefore, also in the second embodiment, when a drop impact is applied, the vibration frequency hardly changes. Further, since the bonding strength can be increased, it is not necessary to increase the bonding area, and therefore it is difficult to increase the crystal impedance.
- FIG. 8 is a perspective view of the positional relationship between the electrode shape on the lower surface of the quartz crystal substrate and the first and second conductive adhesive layers in the quartz crystal vibrating device according to the third embodiment of the present invention. It is a schematic plan view to show.
- the conductive adhesive layers 5 and 6 have a planar shape in which two circles partially overlap when viewed in a plan view.
- the two circles partially overlap so that the centers of the two circles are at different positions in the width direction of the quartz crystal substrate 9.
- the overlapping form of the two circles is not limited to this.
- it is not limited to two circles, and may have a planar shape in which two ellipses partially overlap.
- the planar shape in which two circles or ellipses partially overlap is used. Also good. Even in that case, the bonding strength by the first and second conductive adhesive layers 5 and 6 can be effectively increased. Therefore, impact resistance can be improved, and even if a drop impact is applied, the vibration frequency hardly changes. Further, since the bonding strength can be increased, it is not necessary to increase the bonding area also in this embodiment. Therefore, it is difficult to increase the crystal impedance.
- 9 to 12 are perspective views showing the positional relationship between the lead electrode portion on the lower surface of the quartz substrate and the first and second conductive adhesive layers in the fourth to seventh embodiments of the present invention from above. It is each top view shown typically.
- the center of gravity G of the first and second conductive adhesive layers 5 and 6 on the plane is the center O of the first and second conductive adhesive layers 5 and 6. It is located outside in the width direction.
- the center O refers to the center in the width direction and the length direction.
- the adhesion amounts of the first and second conductive adhesive layers 5 and 6 are reduced on the center side in the width direction, that is, on the side where vibration is strongly propagated. Therefore, the crystal impedance can be further reduced.
- the first and second conductive adhesive layers 5 and 6 have a shape with an aspect ratio of 1.5 or more when viewed in plan, as in the second embodiment. Therefore, the bonding strength can be increased as in the second embodiment.
- the first and second conductive adhesive layers 5 and 6 have their centroids G located on the outer side in the width direction compared to the center O. Therefore, the crystal impedance can be further reduced as in the fourth embodiment.
- the center of gravity G of the first and second conductive adhesive layers 5 and 6 is located on the outer side in the width direction compared to the center O. preferable.
- Such a configuration can also be applied to the conductive adhesive layers 5 and 6 of the first embodiment described above.
- the conductive adhesive layer 5 shown in FIGS. 1 and 2 for example, the conductive adhesive layer 5a and the conductive adhesive layer 5b are separated in the width direction.
- the center of gravity and the center are based on the figure surrounding the conductive adhesive layer 5a and the conductive adhesive layer 5b. May be the center of gravity G and the center O.
- FIG. 1 the center of gravity G of the center O.
- the figure to be included includes each line connecting both ends in the length direction of the quartz substrate 9 of the conductive adhesive layer 5a and both ends in the length direction of the conductive adhesive layer 5b, and the conductive adhesive. It is a figure comprised by the curve which shows the outer periphery of the part outside the said each line of the layers 5a and 5b.
- the first and second conductive adhesive layers 5 and 6 are planes in which two circles partially overlap in a plan view. It has a shape. Therefore, also in the fifth embodiment, the bonding strength can be increased and the impact resistance can be increased. Therefore, even if a drop impact is applied, the vibration characteristics are hardly deteriorated.
- the first and second conductive adhesive layers 5 and 6 have an aspect ratio in the range of 1.5 or more and 3.0 or less, as in the second embodiment. is there. Accordingly, since the bonding strength can be increased as in the second embodiment, even if a drop impact or the like is applied, the vibration characteristics are hardly deteriorated.
- the first and second conductive adhesive layers 5 and 6 have an elliptical shape, but the crystal unit 7 supports the width direction from the inside toward the outside.
- the shape approaches the center side of the quartz substrate 9 from the short side. Therefore, the amount of adhesive attached can be relatively reduced at a portion near the center in the width direction, that is, the center where vibration is strongly transmitted, on the short side where the crystal resonator 7 is supported. Therefore, the crystal impedance can be effectively reduced and the vibration characteristics can be enhanced.
- the first and second conductive adhesive layers 5 and 6 are directed outward from the center in the width direction. As it moves away from the short side. Therefore, also in this embodiment, the crystal impedance can be effectively increased and the vibration characteristics can be improved.
- the conductive adhesive layers 5 and 6 have a shape in which two circles partially overlap when viewed in a plan view. Therefore, as in the third embodiment, the bonding strength can be increased. Therefore, since the impact resistance is improved, even if a drop impact or the like is applied, the vibration characteristics are hardly deteriorated.
- the quartz crystal vibrating devices according to the first to seventh embodiments since the first conductive adhesive layer 5 and the second conductive adhesive layer 6 are configured as described above, a drop impact, etc. Even if is added, the vibration frequency hardly changes. Further, since it is not necessary to increase the bonding area, it is difficult to increase the crystal impedance.
- Such a crystal vibration device can be manufactured by various methods. An embodiment as an example of a manufacturing method will be described below.
- a package material such as the case substrate 2 in which the first and second electrode lands 3 and 4 are formed on the crystal resonator mounting surface is prepared.
- a crystal resonator 7 having the crystal substrate 9, first and second vibration electrodes 10 and 11 provided on the crystal substrate 9, and first and second lead electrodes 12 and 13 is prepared. .
- the lead electrode portions 12 a and 13 a of the crystal resonator 7 are bonded to the first and second electrode lands 3 and 4 of the case substrate 2 using the first and second conductive adhesive layers 5 and 6. .
- the crystal resonator 7 is mounted on the crystal resonator mounting surface of the case substrate 2 by the first and second conductive adhesive layers 5 and 6.
- the first and second conductive adhesive layers 5 and 6 having a planar shape in which two circles or ellipses partially overlap when viewed in plan can be easily formed.
- a planar shape in which two circles or ellipses partially overlap can be easily formed by reducing the distance therebetween.
- two conductive adhesive layers in which the first and second conductive adhesive layers 5 and 6 are separated from each other as described above if the conductive adhesive is applied to two places at a distance. It can also be formed to have parts 5a, 5b, 6a, 6b.
- the first and second conductive surfaces having an aspect ratio of 1.5 or more and 3.0 or less.
- the adhesive layer can also be easily formed.
- the crystal oscillator according to the present invention is not limited to the case substrate 2 and can be applied to crystal oscillators having variously shaped package materials.
- the inner bottom surface of the package material having an opening opened upward may be used as a crystal resonator mounting surface, and the package may be configured by the package material and the lid material.
- the crystal resonator is mounted so as to cover the first and second conductive adhesive layers, but the present invention is not limited to this.
- the crystal unit 7 may be mounted such that a part of the first and second conductive adhesive layers 5 and 6 protrudes from the end of the crystal unit 7.
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
2…ケース基板
2a…水晶振動子搭載面
3,4…第1,第2の電極ランド
3a,3b,4a,4b…電極ランド部
5,6…第1,第2の導電性接着剤層
5a,5b,6a,6b…導電性接着剤層部
7,7A…水晶振動子
8…キャップ材
9…水晶基板
10,11…第1,第2の振動電極
12,13…第1,第2の引き出し電極
12a,12b,13a,13b…引き出し電極部分
Claims (10)
- 水晶振動子搭載面を有するパッケージ材と、
前記パッケージ材の水晶振動子搭載面に設けられている第1及び第2の電極ランドと、
前記パッケージ材の水晶振動子搭載面に片持ち梁で支持されている水晶振動子と、
前記水晶振動子を前記パッケージ材の水晶振動子搭載面に設けられている第1及び第2の電極ランドにそれぞれ電気的に接続しかつ機械的に接合している第1及び第2の導電性接着剤層とを備え、
前記水晶振動子が、水晶基板と、前記水晶基板に設けられた第1及び第2の振動電極と、前記第1及び第2の振動電極にそれぞれ連ねられている第1及び第2の引き出し電極とを有し、
前記第1及び第2の引き出し電極が、前記第1及び第2の導電性接着剤層により、前記第1及び第2の電極ランドにそれぞれ電気的にかつ機械的に接続されており、
前記第1及び第2の導電性接着剤層が、それぞれ、平面視した場合、2つの円または楕円が部分的に重なり合っている平面形状を有する、水晶振動装置。 - 水晶振動子搭載面を有するパッケージ材と、
前記パッケージ材の水晶振動子搭載面に設けられている第1及び第2の電極ランドと、
前記パッケージ材の水晶振動子搭載面に片持ち梁で支持されている水晶振動子と、
前記水晶振動子を前記パッケージ材の水晶振動子搭載面に設けられている第1及び第2の電極ランドにそれぞれ電気的に接続しかつ機械的に接合している第1及び第2の導電性接着剤層とを備え、
前記水晶振動子が、水晶基板と、前記水晶基板に設けられた第1及び第2の振動電極と、前記第1及び第2の振動電極にそれぞれ連ねられている第1及び第2の引き出し電極とを有し、
前記第1及び第2の引き出し電極が、前記第1及び第2の導電性接着剤層により、前記第1及び第2の電極ランドにそれぞれ、電気的にかつ機械的に接続されており、
前記第1及び第2の導電性接着剤層が、それぞれ、互いに隔てられた2つの導電性接着剤層部分を有する、水晶振動装置。 - 水晶振動子搭載面を有するパッケージ材と、
前記パッケージ材の水晶振動子搭載面に設けられている第1及び第2の電極ランドと、
前記パッケージ材の水晶振動子搭載面に片持ち梁で支持されている水晶振動子と、
前記水晶振動子を前記パッケージ材の水晶振動子搭載面に設けられている第1及び第2の電極ランドにそれぞれ電気的に接続しかつ機械的に接合している第1及び第2の導電性接着剤層とを備え、
前記水晶振動子が、水晶基板と、前記水晶基板に設けられた第1及び第2の振動電極と、前記第1及び第2の振動電極にそれぞれ連ねられている第1及び第2の引き出し電極とを有し、
前記第1及び第2の引き出し電極が、前記第1及び第2の導電性接着剤層により、前記第1及び第2の電極ランドにそれぞれ電気的にかつ機械的に接続されており、
前記第1及び第2の導電性接着剤層が、長さ方向を有し、長さ方向最大寸法と、長さ方向最大寸法と直交する幅方向の最大寸法との比であるアスペクト比が1.5以上、3.0以下である、水晶振動装置。 - 前記水晶振動子の前記水晶基板が一対の長辺及び一対の短辺を有する矩形板状の形状を有し、前記短辺の延びる方向が幅方向であり、一方の短辺側において前記水晶振動子が前記第1及び第2の導電性接着剤層により片持ち梁で支持されている、請求項1~3のいずれか1項に記載の水晶振動装置。
- 前記第1及び第2の導電性接着剤層の重心が、該第1及び第2の導電性接着剤層の中心よりも、幅方向外側に位置している、請求項4に記載の水晶振動装置。
- 前記第1及び第2の導電性接着剤層の平面形状が、前記幅方向において内側から外側に向かうにつれて、前記短辺から前記水晶基板中心側に近づく形状とされている、請求項4または5に記載の水晶振動装置。
- 前記第1及び第2の電極ランドの厚みが、前記幅方向内側に比べ、前記幅方向外側において厚くされている、請求項4に記載の水晶振動装置。
- 前記第1及び第2の導電性接着剤層の一部が、前記水晶基板の表面と直接接合されている、請求項1~7のいずれか1項に記載の水晶振動装置。
- 前記第1及び第2の導電性接着剤層が、エポキシ樹脂と、導電性材料とを含む、請求項1~8のいずれか1項に記載の水晶振動装置。
- 水晶振動子搭載面に第1及び第2の電極ランドが形成されているパッケージ材を用意する工程と、
水晶基板と、前記水晶基板に設けられた第1及び第2の振動電極と、前記第1及び第2の振動電極に連ねられている第1及び第2の引き出し電極とを有し、前記第1及び第2の引き出し電極が、前記水晶基板の下面に至っている部分を有する水晶振動子を用意する工程と、
前記水晶振動子の前記第1及び第2の引き出し電極の前記水晶基板の下面に位置している部分を第1及び第2の導電性接着剤を用い、前記パッケージ材の前記第1及び第2の電極ランドに接合することにより、前記第1及び第2の導電性接着剤層により前記水晶振動子を前記パッケージ材の前記水晶振動子搭載面に実装する工程とを備え、
前記パッケージ材の前記第1,第2の電極ランドと、前記水晶基板とを接合するに際し、前記第1及び第2の導電性接着剤層が構成される部分において、それぞれ、2箇所に導電性接着剤を付与する、水晶振動装置の製造方法。
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US9660610B2 (en) * | 2014-05-30 | 2017-05-23 | Kyocera Crystal Device Corporation | Crystal device and mounting arrangement |
DE112016002575B4 (de) * | 2015-06-08 | 2023-08-24 | Murata Manufacturing Co., Ltd. | Vorrichtung für elastische Wellen |
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000013178A (ja) * | 1998-06-23 | 2000-01-14 | Daishinku Corp | 表面実装型圧電振動デバイス |
JP2001274653A (ja) * | 2000-03-24 | 2001-10-05 | Seiko Epson Corp | 圧電デバイス |
JP2003168950A (ja) * | 2001-11-30 | 2003-06-13 | Kinseki Ltd | 圧電振動子及びその製造方法 |
JP2004088524A (ja) * | 2002-08-28 | 2004-03-18 | Toyo Commun Equip Co Ltd | 水晶振動子の構造 |
JP2005039344A (ja) * | 2003-07-15 | 2005-02-10 | Seiko Epson Corp | 圧電振動片の接合方法および圧電デバイスとその製造方法ならびに圧電デバイスを利用した携帯電話装置および圧電デバイスを利用した電子機器 |
JP2009117902A (ja) * | 2007-11-01 | 2009-05-28 | Nippon Dempa Kogyo Co Ltd | 表面実装用の水晶デバイス |
JP2009124370A (ja) * | 2007-11-14 | 2009-06-04 | Nippon Dempa Kogyo Co Ltd | 圧電振動片及び圧電デバイス |
JP2013021667A (ja) * | 2011-03-23 | 2013-01-31 | Nippon Dempa Kogyo Co Ltd | 水晶デバイス |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003224443A (ja) * | 2002-01-29 | 2003-08-08 | Kyocera Corp | 水晶デバイス |
JP2003224447A (ja) * | 2002-01-31 | 2003-08-08 | Kinseki Ltd | 圧電振動子 |
JP2004357131A (ja) * | 2003-05-30 | 2004-12-16 | Kyocera Kinseki Corp | 圧電振動子 |
JP2005236892A (ja) * | 2004-02-23 | 2005-09-02 | Kyocera Corp | 圧電振動子収納用パッケージおよび圧電装置 |
JP2008109538A (ja) | 2006-10-27 | 2008-05-08 | Nippon Dempa Kogyo Co Ltd | 水晶振動子 |
JP4659012B2 (ja) * | 2007-10-18 | 2011-03-30 | 日本電波工業株式会社 | 表面実装用の水晶振動子 |
JP4546511B2 (ja) | 2007-10-25 | 2010-09-15 | 日本電波工業株式会社 | 表面実装用の水晶デバイス |
JP2009239414A (ja) * | 2008-03-26 | 2009-10-15 | Epson Toyocom Corp | 圧電デバイスのパッケージの製造方法、および圧電デバイスのパッケージ構造 |
JP2010187333A (ja) * | 2009-02-13 | 2010-08-26 | Seiko Instruments Inc | 圧電振動子、圧電振動子の製造方法および発振器 |
JP2010263258A (ja) * | 2009-04-29 | 2010-11-18 | Nippon Dempa Kogyo Co Ltd | 音叉型水晶振動子の製造方法 |
JP5452264B2 (ja) * | 2010-02-05 | 2014-03-26 | エスアイアイ・クリスタルテクノロジー株式会社 | 圧電振動子及びこれを用いた発振器 |
-
2014
- 2014-04-22 JP JP2015514816A patent/JP5924451B2/ja active Active
- 2014-04-22 WO PCT/JP2014/061292 patent/WO2014178308A1/ja active Application Filing
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-
2015
- 2015-10-22 US US14/920,419 patent/US10097157B2/en active Active
- 2015-11-26 JP JP2015230504A patent/JP6233392B2/ja active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000013178A (ja) * | 1998-06-23 | 2000-01-14 | Daishinku Corp | 表面実装型圧電振動デバイス |
JP2001274653A (ja) * | 2000-03-24 | 2001-10-05 | Seiko Epson Corp | 圧電デバイス |
JP2003168950A (ja) * | 2001-11-30 | 2003-06-13 | Kinseki Ltd | 圧電振動子及びその製造方法 |
JP2004088524A (ja) * | 2002-08-28 | 2004-03-18 | Toyo Commun Equip Co Ltd | 水晶振動子の構造 |
JP2005039344A (ja) * | 2003-07-15 | 2005-02-10 | Seiko Epson Corp | 圧電振動片の接合方法および圧電デバイスとその製造方法ならびに圧電デバイスを利用した携帯電話装置および圧電デバイスを利用した電子機器 |
JP2009117902A (ja) * | 2007-11-01 | 2009-05-28 | Nippon Dempa Kogyo Co Ltd | 表面実装用の水晶デバイス |
JP2009124370A (ja) * | 2007-11-14 | 2009-06-04 | Nippon Dempa Kogyo Co Ltd | 圧電振動片及び圧電デバイス |
JP2013021667A (ja) * | 2011-03-23 | 2013-01-31 | Nippon Dempa Kogyo Co Ltd | 水晶デバイス |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018121186A (ja) * | 2017-01-25 | 2018-08-02 | 京セラ株式会社 | 水晶デバイス |
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