Vibrator device, oscillator, electronic device, and vehicle

A vibrator device includes a base, a vibrator that includes a vibrator element and a vibrator element package, which accommodates the vibrator element and has a first terminal on a surface on a base side, a circuit element that is disposed between the base and the vibrator and has a first connection pad on a surface on a vibrator side, and a conductive connecting member that is disposed between the circuit element and the vibrator, bonds the circuit element and the vibrator together, and electrically connects the first connection pad and the first terminal together.

BACKGROUND

1. Technical Field

The present invention relates to a vibrator device, an oscillator, an electronic device, and a vehicle.

2. Related Art

For example, a COL package structure that has a lead, a control chip disposed on the lead, and an MEMS chip disposed on the control chip is disclosed in U.S. Unexamined Patent Application Publication No. 2007/0290364.

However, in the COL package structure of U.S. Unexamined Patent Application Publication No. 2007/0290364, the control chip and the MEMS chip are electrically connected to each other via a wire, and the wire is wired to the top surface of the MEMS chip. For this reason, making the height of the COL package structure low is inhibited by the wire.

SUMMARY

An advantage of some aspects of the invention is to provide a vibrator device, an oscillator, an electronic device, and a vehicle, which can achieve a low height.

The advantage can be achieved by the following configurations.

A vibrator device according to an aspect of the invention includes a base, a vibrator that is disposed so as to overlap the base and includes a vibrator element and a vibrator element package, which accommodates the vibrator element and has a first terminal on a surface on a base side, a circuit element that is disposed between the base and the vibrator and has a first connection pad on a surface on a vibrator side, and a conductive connecting member that is disposed between the circuit element and the vibrator, bonds the circuit element and the vibrator together, and electrically connects the first connection pad and the first terminal together.

With this configuration, the height of the vibrator device can be made low.

In the vibrator device according to the aspect of the invention, it is preferable that the circuit element includes an active surface, an insulating layer disposed on the active surface on the vibrator side, and a wiring layer that is disposed on the insulating layer on the vibrator side and has the first connection pad.

With this configuration, the disposition of the first connection pad can be freely set.

In the vibrator device according to the aspect of the invention, it is preferable that the base has a second terminal, and the circuit element has a second connection pad on the surface on the vibrator side and a wire that electrically connects the second terminal and the second connection pad together.

With this configuration, the second terminal and the second connection pad can be electrically connected together more easily. In addition, since electrical connection with the circuit element is performed via the since second terminal, it is easy to mount the vibrator device.

In the vibrator device according to the aspect of the invention, it is preferable that the second connection pad is disposed so as not to overlap the vibrator in plan view seen from a direction where the base, the circuit element, and the vibrator are arranged.

With this configuration, the wire can be more easily connected to the second connection pad.

In the vibrator device according to the aspect of the invention, it is preferable that a height of the wire from the base is lower than a height of the vibrator from the base.

With this configuration, an increase in the height of the vibrator device can be suppressed.

In the vibrator device according to the aspect of the invention, it is preferable that the vibrator element package has a base body having the first terminal and a lid bonded to the base body so as to form an accommodation space accommodating the vibrator element between the lid and the base body.

With this configuration, the configuration of the vibrator element package is simple.

In the vibrator device according to the aspect of the invention, it is preferable that the circuit element has a third connection pad that is disposed on the surface on the vibrator side and is electrically connected to the first connection pad, and the third connection pad is disposed so as not to overlap the vibrator in plan view seen from a direction where the base, the circuit element, and the vibrator are arranged.

With this configuration, since drive inspection of the vibrator element can be performed via the third connection pad, inspection of the vibrator device can be easily performed.

In the vibrator device according to the aspect of the invention, it is preferable that a mold portion that is disposed on the base and covers the vibrator and the circuit element is further included.

With this configuration, the vibrator and the circuit element can be protected from moisture, dust, and shock, and thus the reliability of the vibrator device improves.

In the vibrator device according to the aspect of the invention, it is preferable that a mold portion that is disposed on the base and covers the vibrator and the circuit element is further included, the circuit element has a third connection pad that is disposed on the surface on the vibrator side and is electrically connected to the first connection pad, the third connection pad is disposed so as not to overlap the vibrator in plan view seen from a direction where the base, the circuit element, and the vibrator are arranged, and the third connection pad is closer to a center of the circuit element than the second connection pad is in the plan view.

With this configuration, since the third connection pad can be easily exposed by removing the mold portion around the resonator, inspection of the vibrator device can be more easily performed.

An oscillator according to an aspect of the invention includes the vibrator device according to the aspect of the invention.

With this configuration, the oscillator, in which an effect of the vibrator device according to the aspect of the invention can be enjoyed and which has high reliability, is obtained.

An electronic device according to an aspect of the invention includes the vibrator device according to the aspect of the invention.

With this configuration, the electronic device, in which an effect of the vibrator device according to the aspect of the invention can be enjoyed and which has high reliability, is obtained.

A vehicle according to an aspect of the invention includes the vibrator device according to the aspect of the invention.

With this configuration, the vehicle, in which an effect of the vibrator device according to the aspect of the invention can be enjoyed and which has high reliability, is obtained.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

Hereinafter, a vibrator device, an oscillator, an electronic device, and a vehicle according to the invention will be described in detail based on embodiments illustrated in the attached drawings.

First Embodiment

First, an oscillator (vibrator device) according to a first embodiment of the invention will be described.

FIG. 1is a perspective view illustrating the oscillator (vibrator device) according to the first embodiment of the invention.FIG. 2is a sectional view illustrating an oscillator of the related art.FIG. 3is a sectional view of the oscillator illustrated inFIG. 1.FIG. 4is a sectional view of a vibrator of the oscillator illustrated inFIG. 1.FIG. 5is a plan view of a vibrator element of the vibrator illustrated inFIG. 4.FIG. 6is a perspective view of the vibrator illustrated inFIG. 4.FIG. 7is a sectional view of a circuit element of the oscillator illustrated inFIG. 1.FIG. 8is a plan view of the oscillator illustrated inFIG. 1. Hereinafter, for convenience of description, an upper side inFIGS. 1, 2, 3, 4, 6, and 7and a page front side inFIGS. 5 and 8will also be referred to as “up”, and a lower side inFIGS. 1, 2, 3, 4, 6, and 7and a page depth side ofFIGS. 5 and 8will also be referred to as “down”.

A vibrator device1illustrated inFIG. 1is applied to an oscillator100, and mainly includes a package2, a vibrator3, and a circuit element4. The vibrator3is disposed on the circuit element4. If the vibrator3and the circuit element4are electrically connected to each other via wires W as in an oscillator100′ of the related art illustrated inFIG. 2, loops of the wires W are positioned above the vibrator3. For this reason, the oscillator100′ is thick. In addition, a connecting portion between the vibrator3and the wires W becomes brittle over time due to vibration occurred from the vibrator3and thus there is also a possibility that electrical connection becomes unstable. Thus, in the oscillator100, the vibrator3and the circuit element4are electrically connected to each other via connecting members5positioned between the vibrator and the circuit element as illustrated inFIGS. 1 and 3. Consequently, the vibrator3and the circuit element4can be electrically connected to each other without disposing the wires W illustrated inFIG. 2. For this reason, the oscillator100can be made thin compared to a configuration illustrated inFIG. 2. That is, the height of the oscillator100can be made low. In addition, electrical connection can be stably maintained. Hereinafter, such an oscillator100(vibrator device1) will be described in detail.

Package

The package2is a quad flat non-leaded (QFN) package, and is in a substantially quadrilateral block shape (plate shape) in plan view. Such a package2has a base20and a mold portion24(sealing portion) as illustrated inFIGS. 1 and 3. The base20has a die pad21(mounting portion) having a substantially quadrilateral plate shape in plan view, four hanging leads22connected to corners of the die pad21, and the plurality of leads23(second terminals) disposed along the perimeter of the die pad21. However, the configuration of the base20is not particularly limited. For example, the die pad21may not be a substantially quadrangle in plan view.

As illustrated inFIGS. 1 and 3, the circuit element4is bonded and fixed to the top surface of the die pad21via a die attach member D. The vibrator3is bonded and fixed to the top surface of the circuit element4via the conductive connecting members5. The plurality of leads23and the circuit element4are electrically connected to each other via wires W1, and the circuit element4and the vibrator3are electrically connected to each other via the connecting members5. The wires W1are, for example, bonding wires disposed (formed) using a wire bonding technique. Metal wires, for example, a gold wire, a copper wire, and an aluminum wire can be used as the wires Wl.

The mold portion24is provided on the top surface of the base20so as to seal the vibrator3, the circuit element4, and the wires W1. Consequently, each of the units can be effectively protected from moisture, dust, and shock, and thus the reliability of the oscillator100improves. The configuration materials of the mold portion24are not particularly limited. For example, an epoxy based thermosetting resin can be used and a thermosetting resin may contain a filler such as silica.

As illustrated inFIG. 1, each of the four hanging leads22extends from a corner of the die pad21to each corner of the package2, and the die pad21is supported by the four hanging leads22. Each of the hanging leads22is formed so as to be thinner than the die pad21by half etching a bottom surface thereof. The bottom surface of each of the hanging leads22is covered with the mold portion24. Consequently, since each of the hanging leads22is not exposed from the bottom surface of the package2, the mountability of the oscillator100improves.

As illustrated inFIG. 1, the plurality of leads23are disposed along four sides of the package2in plan view of the package2. However, the disposition of the leads23is not particularly limited. For example, the leads may be disposed along one side of the package2, may be disposed along two sides, or may be disposed along three sides, or one lead may be disposed for each side. The number of the leads23is not particularly limited as well, and can be set as appropriate according to a device configuration (for example, the number of terminals of the circuit element4).

The bottom surface of each of the leads23is exposed from the mold portion24, and the leads are portions (connecting portions) that perform electrical connection with an external device. The top surface of each of the leads23is a portion (wire connecting portion) connected to the wires Wl.

The package2has been described hereinbefore. The configuration material of the base20is not particularly limited. Metal materials, such as gold (Au), silver (Ag), platinum (Pt), palladium (Pd), iridium (Ir), copper (Cu), aluminum (Al), nickel (Ni), titanium (Ti), and tungsten (W), and alloys including the metal materials can be given as examples, and out of the materials, one type or a combination (for example, as a stacked object having two or more layers) of two or more types of materials can be used. For example, by patterning one metal plate, the base20can be formed collectively with the die pad21, each of the hanging leads22, and each of the leads23.

Vibrator

As illustrated inFIG. 4, the vibrator3has a vibrator element31and a vibrator element package39accommodating the vibrator element31.

The vibrator element31is an AT cut quartz crystal vibrator element that thickness-shear vibrates. Such a vibrator element31has an AT cut quartz crystal substrate32and an electrode33formed on the quartz crystal substrate32as illustrated inFIG. 5. The quartz crystal substrate has a thin vibrating portion321and a thick portion322, which is positioned on the perimeter of the vibrating portion321and is thicker than the vibrating portion321. The thin vibrating portion321is formed by forming a recessed portion in one surface of the quartz crystal substrate32.

The electrode33has a pair of excitation electrodes331and332, a pair of pad electrodes333and334, and a pair of extraction electrodes335and336. The excitation electrode331is disposed on an exterior surface of the vibrating portion321. On the other hand, the excitation electrode332is disposed on an interior surface of the vibrating portion321so as to oppose the excitation electrode331. In such a configuration, a region of the vibrating portion321sandwiched between the excitation electrodes331and332is a vibration region where thickness-shear vibration is excited. The pad electrode333is disposed on an exterior surface of the thick portion322, and the pad electrode334is disposed on an interior surface of the thick portion322so as to oppose the pad electrode333. The extraction electrode335is disposed on an exterior surface of the quartz crystal substrate32and electrically connects the excitation electrode331and the pad electrode333together. The extraction electrode336is disposed on an interior surface of the quartz crystal substrate32and electrically connects the excitation electrode332and the pad electrode334together.

Although the vibrator element31has been briefly described hereinbefore, the configuration of the vibrator element31is not particularly limited. For example, the vibrator element may be a vibrator element using a quartz crystal substrate cut out at a different cut angle, such as a vibrator element using a Z cut quartz crystal substrate, a vibrator element using an ST cut quartz crystal substrate, and a vibrator element using an SC cut quartz crystal substrate. In addition, the vibrator element may be a vibrator element with a piezoelectric element being disposed on a silicon substrate, or may be a surface acoustic wave (SAW) vibrator with an inter digital transducer (IDT) being disposed on a silicon substrate.

As illustrated inFIG. 4, the vibrator element package39has a base body391and a lid392. The base body391is in a box shape having a recess391awhich opens to the top surface. The lid392is bonded to the top surface of the base body391so as to close an opening of the recess391a. An accommodation space S is formed by closing the recess391awith the lid392and the vibrator element31is accommodated in the accommodation space S. The accommodation space S is in, for example, a depressurized (vacuum) state. However, the atmosphere of the accommodation space S is not particularly limited, and can be changed as appropriate according to a configuration of the vibrator element31.

Although the configuration material of the base body391is not particularly limited, various types of ceramics, for example, aluminum oxide, can be used. Although the configuration material of the lid392is not particularly limited, the configuration material may be, for example, a material of which linear expansion coefficient is similar to a linear expansion coefficient of the configuration material of the base body391. For example, in a case where the configuration material of the base body391is the ceramic described above, it is preferable to be an alloy such as Kovar.

As illustrated inFIG. 4, internal terminals393and394are disposed on the bottom of the recess391a. As illustrated inFIG. 6, external terminals395and396(first terminals) are disposed on a bottom surface391dof the base body391. Via internal wiring (not illustrated) provided in the base body391, the internal terminal393and the external terminal395are electrically connected to each other and the internal terminal394and the external terminal396are electrically connected to each other. In addition, dummy terminals397and398are provided on the bottom surface391dof the base body391. The dummy terminals397and398are not electrically connected to the vibrator element31, and are mainly used as terminals for enhancing the strength of bonding with the circuit element4. The dummy terminals397and398may be omitted. Although the external terminals395and396are disposed diagonally on the bottom surface391d, the disposition of the external terminals395and396is not particularly limited as well.

As illustrated inFIG. 4, the vibrator element31is disposed in the accommodation space S such that the exterior surface (surface on a side where the recessed portion is formed) of the vibrator element faces the base body391. The vibrator element is fixed to the bottom of the recess391aby a conductive adhesive381, and the pad electrode333and the internal terminal393are electrically connected to each other via the conductive adhesive381. The pad electrode334and the internal terminal394are electrically connected to each other via a wire W5. Consequently, electrical connection between the outside of the vibrator element package39and the vibrator element31can be achieved via the external terminals395and396.

Although the vibrator element package39has been described hereinbefore, the configuration of the vibrator element package39is not particularly limited. Contrary to the embodiment, for example, the base body391may be in a plate shape and the lid392may be in a cap shape having a recess (recess that corresponds to the recess391aof the embodiment) accommodating the vibrator element31.

With the bottom surface391dof the base body391facing the circuit element4(lower side), the vibrator3having such a configuration is bonded and fixed to a top surface40of the circuit element4via the connecting members5as illustrated inFIG. 4.

Although the vibrator3has been described hereinbefore, the configuration of the vibrator3is not particularly limited. For example, the vibrator may be an MEMS chip.

Circuit Element

The circuit element4has, for example, an oscillation circuit for oscillating the vibrator element31, and can output a signal having a predetermined frequency. As illustrated inFIG. 1, such a circuit element4is bonded and fixed to the top surface of the die pad21via the die attach member D. As described above, the vibrator3is bonded and fixed to the top surface40of the circuit element4via the connecting members5. That is, the circuit element4is positioned between the die pad21and the vibrator3.

As illustrated inFIG. 7, such a circuit element4has a circuit element main body41(IC) having an active surface411and a redisposing wiring layer42disposed on the active surface411. Various types of circuits, such as the oscillation circuit described above, are formed in the circuit element main body41. The redisposing wiring layer42has a function of redisposing terminals412provided on the active surface411of the circuit element main body41as connection pads P. By having such a redisposing wiring layer42, the disposition of the connection pads P can be freely set. For this reason, various types of circuits having different disposition of the terminals412can be used as the circuit element main body41. That is, it is not necessary to design the circuit element main body41exclusive to the oscillator100. Accordingly, for example, the cost of the oscillator100can be reduced.

In addition, the redisposing wiring layer42has a first insulating layer421stacked on the active surface411of the circuit element main body41, a first wiring layer422that is stacked on the first insulating layer421and is electrically connected to the terminals412, a second insulating layer423stacked on the first insulating layer421and the first wiring layer422, and a second wiring layer424that is stacked on the second insulating layer423and is electrically connected to the first wiring layer422. The configuration of the redisposing wiring layer42is not particularly limited. For example, the redisposing wiring layer may have one insulating layer and one wiring layer, or may have three or more insulating layers and three or more wiring layers.

Configuration materials of the first and second insulating layers421and423are not particularly limited. For example, various types of resin materials, such as polyimide, an epoxy resin, an acrylic resin, and a phenol resin, and silicon oxide can be used. In addition, configuration materials of the first and second wiring layers422and424are not particularly limited. For example, various types of metals such as gold (Au), platinum (Pt), copper (Cu), aluminum (Al), and magnesium (Mg), and alloys including at least one type of the metals can be used.

In addition, the second wiring layer424has the plurality of connection pads P. The plurality of connection pads P include a plurality of first connection pads P1, a plurality of second connection pads P2, and a plurality of third connection pads P3. That is, the circuit element4has the plurality of first connection pads P1, the plurality of second connection pads P2, and the plurality of third connection pads P3, on the top surface40(surface on a vibrator3side) thereof. Each of the first connection pads P1is a terminal connected to the vibrator3, each of the second connection pads P2is a terminal connected to each of the leads23, and each of the third connection pads P3is a terminal for inspection. In addition, each of the third connection pads P3is positioned closer to the center of the circuit element4than each of the second connection pads P2is.

As illustrated inFIG. 8, the second wiring layer424has the four first connection pads P1(P11, P12, P13, and P14). In addition, as illustrated inFIG. 6, each of the four first connection pads P1is disposed so as to oppose each of the external terminals395and396and the dummy terminals397and398of the vibrator3. Specifically, the first connection pad P11is disposed so as to oppose the external terminal395, the first connection pad P12is disposed so as to oppose the external terminal396, the first connection pad P13is disposed so as to oppose the dummy terminal397, and the first connection pad P14is disposed so as to oppose the dummy terminal398. The number of the first connection pads P1is not particularly limited, and can be set as appropriate according to the number of external terminals and dummy terminals of the vibrator3.

In addition, each of the conductive connecting members5is provided between the first connection pad P11and the external terminal395, between the first connection pad P12and the external terminal396, between the first connection pad P13and the dummy terminal397, and between the first connection pad P14and the dummy terminal398. The vibrator3and the circuit element4are bonded together via the connecting members5, and each pair of the first connection pad P11and the external terminal395, the first connection pad P12and the external terminal396, the first connection pad P13and the dummy terminal397, and the first connection pad P14and the dummy terminal398is electrically connected together via each of the connecting members5.

The conductive connecting members5are not particularly limited. For example, a conductive adhesive obtained by mixing a conductive filler into various types of epoxy-based, acryl-based, and silicone-based adhesives, solder, and a metal brazing material can be used.

Each of the first connection pads P11, P12, P13, and P14is electrically connected to each of the terminals412(that is, a circuit formed on the circuit element main body41) of the circuit element main body41via the first wiring layer422. Consequently, the vibrator element31and the circuit element main body41can be electrically connected to each other. It is preferable that each of the first connection pads P13and P14, which are not electrically connected to the vibrator element31, is connected to ground and potentials remain constant. Consequently, a change in the potentials of the first connection pads P13and P14due to an effect from the surroundings can be suppressed and noises are unlikely to occur. Thus, the reliability of the oscillator100improves. However, the first connection pads P13and P14may not be electrically connected to the circuit element main body41, or may be in an electrically floating state.

As illustrated inFIG. 8, the second wiring layer424has the sixteen second connection pads P2. In addition, each of the second connection pads P2is electrically connected to each of the terminals412via the first wiring layer422. The second connection pads P2are disposed along an outer periphery of the top surface40of the circuit element4in plan view of the circuit element4. Specifically, the second connection pads P2are disposed along each of the four sides4a,4b,4c, and4don the outline of the top surface40of the circuit element4. In order to ensure a space on an outer peripheral portion of the top surface40of the circuit element4and dispose the second connection pads P2along each of the sides4a,4b,4c, and4d, the vibrator3is disposed on almost a middle portion of the top surface40of the circuit element4. The disposition and number of the second connection pads P2are not particularly limited. For example, the second connection pads P2may be disposed along one side, two sides, or three sides out of the four sides.

Each of the second connection pads P2is electrically connected to each of the leads23via each of the wires W1. Consequently, the circuit element4(circuit element main body41) and the leads23can be electrically connected to each other. In particular, each of the second connection pads is disposed so as not to overlap the vibrator3in plan view of the circuit element4. In other words, when the circuit element4is seen from above, each of the second connection pads P2is disposed so as to be exposed from the vibrator3without being hidden by the vibrator3. Consequently, each of the wires W1can be more easily connected to each of the second connection pads P2.

Each of the wires W1is disposed so as not to straddle the vibrator3. In other words, the vibrator3is not positioned between each set of the second connection pad P2and the lead23connected with the wire W1. Consequently, the height of the wire W1(height of an uppermost portion of a loop) can be restricted to be low and thus the height of the oscillator100can be made low. In addition, the contact of the wires W1with the vibrator3can be suppressed and damage to the wires W1can be effectively suppressed.

As illustrated inFIG. 3, a height TW1of each of the wires W1from the base20is lower than a height T3of the vibrator3from the base20. In other words, the highest portion of each of the wires W1is positioned below (base20side) the top surface of the vibrator3. Consequently, since each of the wires W1does not stick out higher than the top surface of the vibrator3, an increase in the height of the oscillator100can be suppressed. A ratio between the height TW1and T3is not particularly limited. For example, the ratio is preferably 0.3 TW1/T3<1.0, more preferably 0.5 TW1/T3≤0.8. Consequently, it can be ensured that the heights TW1of the wires W1are appropriate, and the disposition of the wires W1is simpler.

As illustrated inFIG. 8, the second wiring layer424has the two third connection pads P3. Each of the third connection pads P3is disposed so as not to overlap the vibrator3in plan view of the circuit element4. In other words, when the circuit element4is seen from above, each of the third connection pads P3is disposed so as to be exposed from the vibrator3without being hidden under the vibrator3. One third connection pad P3is electrically connected to the first connection pad Pll via the first wiring layer422, and the other third connection pad P3is electrically connected to the first connection pad P12via the first wiring layer422. However, each of the third connection pads P3may be electrically connected to the first connection pad P11and P12via the second wiring layer424instead of the first wiring layer422.

Such third connection pads P3are connection pads for inspection used when inspecting the vibrator3. If a defect occurs in the oscillator100or the oscillator100breaks down, in some cases, a probe pin for inspection is directly pushed against the external terminals395and396of the vibrator3and the vibrator element31is directly driven to perform inspection in order to find out a cause. In this case, inspection is performed in general in a state where a part of the mold portion24is removed by etching and the vibrator3is exposed. However, since the external terminals395and396are hidden between the base body391and the circuit element4in the embodiment, the external terminals395and396are not exposed and thus the probe pin cannot be directly pushed against the external terminals395and396. Thus, in the oscillator100, the third connection pads P3electrically connected to the external terminals395and396are provided so as to press the probe pin against the third connection pads P3. Since the third connection pads P3are positioned on the top surface40of the circuit element4so as not to overlap the vibrator3as described above, the third connection pads can be easily exposed by removing a part of the mold portion24by etching. For this reason, the inspection described above can be more easily performed.

The oscillator100to which the vibrator device1is applied has been described hereinbefore. As described above, the vibrator device1(oscillator100) has the base20, the vibrator3that is disposed so as to overlap the base20and includes the vibrator element31and the vibrator element package39, which accommodates the vibrator element31and has the external terminals395and396(first terminals) on the bottom surface391d(surface on the base20side), the circuit element4that is disposed between the base20and the vibrator3and has the first connection pads P1(P11and P12) on the top surface40(surface on the vibrator3side), and the conductive connecting members5that are disposed between the circuit element4and the vibrator3, bond the circuit element4and the vibrator3together, and electrically connect the first connection pads P1(P11and P12) and the external terminals395and396together. Consequently, the vibrator3and the circuit element4can be electrically connected to each other without using wires. For this reason, the vibrator device1(oscillator100) can be made thin, for example, compared to the configuration illustrated inFIG. 2described above. That is, the height of the vibrator device1(oscillator100) can be made low.

As described above, in the vibrator device1(oscillator100), the circuit element4has the active surface411, the first insulating layer421(insulating layer) disposed above (vibrator3side) the active surface411, and the second wiring layer424(wiring layer) that is disposed above (vibrator3side) the first insulating layer421and includes the first connection pads Pl. By having such a configuration, the disposition of the first connection pads P1can be freely set. For this reason, for example, various types of circuits having different disposition of the terminals412on the active surface411can be used as the circuit element4. Accordingly, for example, the cost of the vibrator device1(oscillator100) can be reduced.

As described above, in the vibrator device1(oscillator100), the base20has the leads23(second terminals) and the circuit element4has the second connection pads P2on the top surface40(surface on the vibrator3side). The vibrator device1(oscillator100) has the wires W1that electrically connect the leads23and the second connection pads P2together. By using the wires W1as described above, the leads23and the circuit element4can be electrically connected to each other easily. Since electrical connection with the circuit element4is performed via the leads23, it is easy to mount the vibrator device1(oscillator100).

As described above, in the vibrator device1(oscillator100), the second connection pads P2are disposed so as not to overlap the vibrator3in plan view (in plan view of the base20) seen from a direction where the base20, the circuit element4, and the vibrator3are arranged. Consequently, the wires W1can be more easily connected to the second connection pads P2. Specifically, since the second connection pads P2do not overlap the vibrator, the second connection pads P2are likely to press a capillary and the wires W1can be more easily connected to the second connection pads P2during wire bonding.

As described above, in the vibrator device1(oscillator100), the height TW1of each of the wires W1from the base20is lower than the height T3of the vibrator3from the base20. Consequently, since the wires W1do not stick out higher than the top surface of the vibrator3, an increase in the height of the vibrator device1(oscillator100) can be suppressed.

As described above, in the vibrator device1(oscillator100), the vibrator element package39has the base body391having the external terminals395and396and the lid392bonded to the base body391so as to form the accommodation space S accommodating the vibrator element31between the lid and the base body391. Consequently, the configuration of the vibrator element package39is simple.

As described above, in the vibrator device1(oscillator100), the circuit element4has the third connection pads P3that are disposed on the top surface40(surface on the vibrator3side) and are electrically connected to the first connection pads Pl. The third connection pads P3are disposed so as not to overlap the vibrator3in plan view (in plan view of the base20) seen from the direction where the base20, the circuit element4, and the vibrator3are arranged. Consequently, since drive inspection of the vibrator element31can be performed via the third connection pads P3, the inspection described above can be easily performed.

As described above, the vibrator device1(oscillator100) has the mold portion24, which is disposed on the base20and covers the vibrator3and the circuit element4. Consequently, the vibrator3and the circuit element4can be protected from moisture, dust, and shock, and thus the reliability of the vibrator device1(oscillator100) improves.

As described above, the vibrator device1(oscillator100) has the mold portion24, which is disposed on the base20and covers the vibrator3and the circuit element4. The circuit element4has the third connection pads P3that are disposed on the top surface40(surface on the vibrator3side) and are electrically connected to the first connection pads P1. The third connection pads P3are disposed so as not to overlap the vibrator3in plan view seen from the direction where the base20, the circuit element4, and the vibrator3are arranged. In addition, in plan view, the third connection pads P3are positioned closer to the center of the circuit element4than the second connection pads P2are. Consequently, the third connection pads P3can be more easily exposed by removing the mold portion24, which is on the perimeter of the vibrator3. For this reason, the inspection described above can be more easily performed.

As described above, the oscillator100has the vibrator device1. For this reason, the effect of the vibrator device1described above can be enjoyed and high reliability can be demonstrated.

Although a configuration where the package2is a QFN package has been described in the embodiment, the package2is not particularly limited. For example, a quad flat package (QFP), a dual flat package (DFP), a ball grid array (BGA), a small outline package (SOP), and a dual flat no-leaded (DFN) package may be used. In addition, for example, a ceramic package such as the vibrator element package39may be used.

Although a configuration where the circuit element4has the circuit element main body41and the redisposing wiring layer42is adopted in the embodiment, the configuration of the circuit element4is not limited thereto. For example, the redisposing wiring layer42may be omitted. In this case, the terminals412may be disposed on the active surface411so as to have the same disposition as the first connection pads P1, the second connection pads P2, and the third connection pads P3described above. That is, the terminals412may include the first connection pads P1, the second connection pads P2, and the third connection pads P3.

Second Embodiment

Next, an electronic device according to a second embodiment of the invention will be described.

FIG. 9is a perspective view illustrating the electronic device according to the second embodiment of the invention.

A mobile type (or note type) personal computer1100illustratedFIG. 9is a computer to which the electronic device including the vibrator device according to the invention is applied. In this figure, the personal computer1100is configured of a main body unit1104including a keyboard1102and a display unit1106including a display1108. The display unit1106is supported via a hinge structure so as to be rotatable with respect to the main body unit1104. The oscillator100(vibrator device1) is mounted inside such a personal computer1100.

Such a personal computer1100(electronic device) has the vibrator device1. For this reason, the effect of the vibrator device1described above can be enjoyed and high reliability can be demonstrated.

Third Embodiment

Next, an electronic device according to a third embodiment of the invention will be described.

FIG. 10is a perspective view illustrating the electronic device according to the third embodiment of the invention.

A mobile phone1200(including a PHS as well) illustrated inFIG. 10is a phone to which the electronic device including the vibrator device according to the invention is applied. In this figure, the mobile phone1200includes an antenna (not illustrated), a plurality of operation buttons1202, ear piece1204, and a mouth piece1206. A display1208is disposed between the operation buttons1202and the earpiece1204. The oscillator100(vibrator device1) is mounted inside such a mobile phone1200.

Such a mobile phone1200(electronic device) has the vibrator device1. For this reason, the effect of the vibrator device1described above can be enjoyed and high reliability can be demonstrated.

Fourth Embodiment

Next, an electronic device according to a fourth embodiment of the invention will be described.

FIG. 11is a perspective view illustrating the electronic device according to the fourth embodiment of the invention.

A digital still camera1300illustrated inFIG. 11is a camera to which the electronic device including the vibrator device according to the invention is applied. In this figure, a display1310is provided on the back surface of a case (body)1302, and is configured to perform display based on an imaging signal from a CCD. The display1310functions as a viewfinder displaying a subject as an electronic image. In addition, a light receiving unit1304including an optical lens (imaging optical system) and the CCD is provided on a front surface side (interior surface side in this figure) of the case1302. When a photographer checks a subject image displayed on the display1310and presses a shutter button1306, an imaging signal from the CCD at that time point is transmitted to and is stored in a memory1308. The oscillator100(vibrator device1) is mounted inside such a digital still camera1300.

Such a digital still camera1300(electronic device) has the vibrator device1. For this reason, the effect of the vibrator device1described above can be enjoyed and high reliability can be demonstrated.

In addition to the personal computer, the mobile phone, and the digital still camera, the electronic device according to the invention can be applied to, for example, a smartphone, a tablet terminal, a watch (including a smartwatch), an ink jet discharging apparatus (for example, an ink jet printer), a laptop personal computer, a television, wearable terminals such as a HMD (head mounted display), a video camera, a video tape recorder, a car navigation device, a pager, an electronic notebook (including an electronic notebook with a communication function as well), an electronic dictionary, a calculator, an electronic game device, a word processor, a workstation, a videophone, a television monitor for crime prevention, an electronic binoculars, a POS terminal, medical devices (for example, an electronic thermometer, a sphygmomanometer, a blood glucose meter, an electrocardiogram measuring device, an ultrasonic diagnostic apparatus, and an electronic endoscope), a fish finder, various types of measuring devices, a mobile terminal base station apparatus, meters (for example, meters of a car, an aircraft, and a ship), a flight simulator, and a network server.

Fifth Embodiment

Next, a vehicle according to a fifth embodiment of the invention will be described.

FIG. 12is a perspective view illustrating the vehicle according to the fifth embodiment of the invention.

An automobile1500illustrated inFIG. 12is an automobile to which the vehicle including the vibrator device according to the invention is applied. In this figure, the oscillator100(vibrator device1) is mounted inside the automobile1500. The oscillator100(vibrator device1) can be widely applied to, for example, a keyless entry, an immobilizer, a car navigation system, a car air conditioner, an anti-lock brake system (ABS), an air bag, a tire pressure monitoring system (TPMS), an engine control, a battery monitor of a hybrid automobile or an electric automobile, and an electronic control unit (ECU) such as a car body posture control system.

Such an automobile1500(vehicle) has the vibrator device1. For this reason, the effect of the vibrator device1described above can be enjoyed and high reliability can be demonstrated.

The vehicle is not limited to the automobile1500, and can also be applied to, for example, an airplane, a ship, an automatic guided vehicle (AGV), a bipedal walking robot, and an unmanned airplane such as a drone.

Although the vibrator device, the oscillator, the electronic device, and the vehicle according to the invention have been described hereinbefore based on the illustrated embodiments, the invention is not limited thereto. A configuration of each unit can be substituted with any configuration having the same function. Any other configuration elements may be added to the invention. In addition, the invention may be a combination of any two or more configurations (characteristics) out of each of the embodiments.

In addition, although a configuration where the vibrator device is applied to the oscillator has been described in the embodiments described above, the configuration is not limited thereto. For example, the vibrator device may be applied to a physical quantity sensor that can detect a physical quantity such as acceleration and angular velocity. In this case, for example, a vibrator element that can detect angular velocity and acceleration may be used as the vibrator element of the vibrator, and a circuit element including a drive circuit that drives the vibrator element and a detection circuit that detects a physical quantity according to an output from the vibrator element may be used as the circuit element.

The entire disclosure of Japanese Patent Application No. 2017-048332, filed Mar. 14, 2017 is expressly incorporated by reference herein.