Patent Publication Number: US-2020278377-A1

Title: Inertial sensor, electronic apparatus, and vehicle

Description:
The present application is based on, and claims priority from JP Application Serial Number 2019-036744, filed Feb. 28, 2019, the disclosure of which is hereby incorporated by reference herein in its entirety. 
     BACKGROUND 
     1. Technical Field 
     The present disclosure relates to an inertial sensor, an electronic apparatus, and a vehicle. 
     2. Related Art 
     The inertial sensor described in JP-A-2015-177153 includes a substrate, a three-axis acceleration sensor element and a three-axis angular velocity sensor element that are provided on the substrate and disposed side by side in the Y-axis direction, and a lid that covers the three-axis acceleration sensor element and the three-axis angular velocity sensor element and is bonded to the substrate. The three-axis acceleration sensor element includes an X-axis acceleration sensor element that detects acceleration in the X-axis direction, a Y-axis acceleration sensor element that detects acceleration in the Y-axis direction, and a Z-axis acceleration sensor element that detects acceleration in the Z-axis direction, and these three sensor elements are disposed side by side in the X-axis direction. Similarly, the three-axis angular velocity sensor element includes an X-axis angular velocity sensor element that measures an angular velocity around the X-axis, a Y-axis angular velocity sensor element that measures an angular velocity around the Y-axis, and a Z-axis angular velocity sensor element that measures an angular velocity around the Z-axis, and these three sensor elements are disposed side by side in the X-axis direction. 
     However, in the inertial sensor of JP-A-2015-177153, a plurality of terminals electrically coupled to the X-axis acceleration sensor element, a plurality of terminals electrically coupled to the Y-axis acceleration sensor element, and a plurality of terminals electrically coupled to the Z-axis acceleration sensor element are respectively provided at the same side with respect to the lid, that is, on the minus side in the Y-axis direction in the illustrated configuration. A plurality of terminals electrically coupled to the X-axis angular velocity sensor element, a plurality of terminals electrically coupled to the Y-axis angular velocity sensor element, and a plurality of terminals electrically coupled to the Z-axis angular velocity sensor element are respectively provided at the same side with respect to the lid, that is, on the plus side in the Y-axis direction in the illustrated configuration. 
     The X-axis acceleration sensor element includes, as the plurality of terminals, a drive signal terminal for a drive signal applied to the X-axis acceleration sensor element and a detection signal terminal for a detection signal output from the X-axis acceleration sensor element, and if these terminals are disposed on the same side with respect to the lid, these terminals are close to each other, the drive signal may be mixed into the detection signal as noise, and the S/N ratio of the detection signal may be reduced. The same applies to other Y-axis acceleration sensor element, Z-axis acceleration sensor element, X-axis angular velocity sensor element, Y-axis angular velocity sensor element, and Z-axis angular velocity sensor element. 
     In particular, when a differential charge amplifier is used in a detection circuit scheme, if a drive signal terminal is present near the detection signal terminal, the charge to be detected may be adversely affected. In a high accuracy sensor used in an inertia measurement device or the like, a reduction in the S/N ratio of a detection signal due to a drive signal was a big problem. For that reason, it is desired to improve reliability of the detection signal. 
     SUMMARY 
     An inertial sensor according to an aspect of the disclosure includes a substrate, a first inertial sensor element provided on the substrate, a lid bonded to the substrate so as to cover the first inertial sensor element, a first drive signal terminal that is provided outside the lid and is for a drive signal to be applied to the first inertial sensor element, and a first detection signal terminal that is provided outside the lid and is for a detection signal output from the first inertial sensor element, in which, in plan view of the substrate, the first drive signal terminal and the first detection signal terminal are provided with the lid interposed therebetween. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a plan view illustrating an inertial sensor according to a first embodiment. 
         FIG. 2  is a cross-sectional view taken along line II-II in  FIG. 1 . 
         FIG. 3  is a plan view illustrating an example of a sensor element that measures acceleration in the X-axis direction. 
         FIG. 4  is a plan view illustrating an example of a sensor element that measures acceleration in the Y-axis direction. 
         FIG. 5  is a plan view illustrating an example of a sensor element that measures acceleration in the Z-axis direction. 
         FIG. 6  is a graph illustrating an example of a drive voltage applied to each sensor element. 
         FIG. 7  is a cross-sectional view illustrating an inertial sensor of a second embodiment. 
         FIG. 8  is a cross-sectional view illustrating a mounting table disposed on a substrate. 
         FIG. 9  is a cross-sectional view illustrating another mounting table provided on the substrate. 
         FIG. 10  is a partially enlarged plan view illustrating an inertial sensor according to a third embodiment. 
         FIG. 11  is a plan view illustrating an inertial sensor according to a fourth embodiment. 
         FIG. 12  is a plan view illustrating an example of a sensor element that measures an angular velocity around the X-axis. 
         FIG. 13  is a plan view illustrating an example of a sensor element that measures an angular velocity around the Y-axis. 
         FIG. 14  is a plan view illustrating an example of a sensor element that measures an angular velocity around the Z-axis. 
         FIG. 15  is a graph illustrating an example of a voltage applied to the sensor element. 
         FIG. 16  is a plan view illustrating an inertial sensor according to a fifth embodiment. 
         FIG. 17  is a plan view illustrating an example of the sensor element. 
         FIG. 18  is a plan view illustrating an inertial sensor unit according to a sixth embodiment. 
         FIG. 19  is a cross-sectional view of the inertial sensor unit illustrated in  FIG. 18 . 
         FIG. 20  is a plan view illustrating a smartphone according to a seventh embodiment. 
         FIG. 21  is an exploded perspective view illustrating an inertial measurement device according to an eighth embodiment. 
         FIG. 22  is a perspective view of a substrate included in the inertial measurement device illustrated in  FIG. 21 . 
         FIG. 23  is a block diagram illustrating an entire system of a vehicle positioning device according to a ninth embodiment. 
         FIG. 24  is a diagram illustrating an operation of the vehicle positioning device illustrated in  FIG. 23 . 
         FIG. 25  is a perspective view illustrating a vehicle according to a tenth embodiment. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Hereinafter, an inertial sensor, an electronic apparatus, and a vehicle according to the present disclosure will be described in detail based on embodiments illustrated in the accompanying drawings. 
     First Embodiment 
       FIG. 1  is a plan view illustrating an inertial sensor according to a first embodiment.  FIG. 2  is a cross-sectional view taken along line II-II in  FIG. 1 .  FIG. 3  is a plan view illustrating an example of a sensor element that measures acceleration in the X-axis direction.  FIG. 4  is a plan view illustrating an example of a sensor element that measures acceleration in the Y-axis direction.  FIG. 5  is a plan view illustrating an example of a sensor element that measures acceleration in the Z-axis direction.  FIG. 6  is a graph illustrating an example of a drive voltage applied to each sensor element. 
     In each drawing excluding  FIG. 6 , the X-axis, Y-axis, and Z-axis are illustrated as three axes orthogonal to each other. A direction along the X-axis, that is, a direction parallel to the X-axis is referred to as an “X-axis direction”, a direction along the Y-axis is referred to as a “Y-axis direction”, and a direction along the Z-axis is referred to as a “Z-axis direction”. A tip end side of the arrow of each axis is also referred to as a “plus side”, and the opposite side is also referred to a “minus side”. In addition, the plus side in the Z-axis direction is also referred to as “upper”, and the minus side in the Z-axis direction is also referred to as “lower”. In the specification of the present application, the term “orthogonal to” includes not only a case where constituent elements intersect at 90° but also a case where the constituent elements intersect at an angle slightly inclined from 90°, for example, within a range of 90°±5°. 
     The inertial sensor  1  illustrated in  FIG. 1  is an acceleration sensor that can independently measure accelerations in the X-axis direction, the Y-axis direction, and the Z-axis direction that are orthogonal to each other. Such an inertial sensor  1  includes a substrate  2 , three sensor elements  3 ,  4 , and  5  disposed on the substrate  2 , and a lid  6  that accommodates the sensor elements  3 ,  4 , and  5  and is bonded to the substrate  2 . The functions of the three sensor elements  3 ,  4 , and  5  are as follows: the sensor element  3  (first inertial sensor element) measures the acceleration Ax in the X-axis direction, the sensor element  4  (second inertial sensor element) measures the acceleration Ay in the Y-axis direction, and the sensor element  5  (third inertial sensor element) measures an acceleration Az in the Z-axis direction. In  FIG. 1 , for convenience of explanation, the sensor elements  3 ,  4 , and  5  are illustrated in a simplified manner. 
     A configuration of the inertial sensor  1  is not limited to the configuration described above, and, for example, an arrangement, shape, function, and the like of the sensor elements  3 ,  4 , and  5  may be different from the illustrated configuration. For example, one or two of the sensor elements  3 ,  4 , and  5  may be omitted. A sensor element that can measure the angular velocity may be used instead of or in addition to the sensor elements  3 ,  4 , and  5 . 
     As illustrated in  FIG. 1 , the substrate  2  is rectangular, that is, a quadrangle in plan view from the Z-axis direction, and has a rectangular shape having a pair of sides  2   a  and  2   b  extending in the Y-axis direction and a pair of sides  2   c  and  2   d  extending in the X-axis direction. However, the shape of the substrate  2  in plan view is not particularly limited, and may be, for example, a polygon other than a rectangle, a circle, an irregular shape, or the like. The substrate  2  includes three concave portions  23 ,  24 , and  25  that open to the upper surface. The sensor element  3  is provided so as to overlap the concave portion  23 , the sensor element  4  is provided so as to overlap the concave portion  24 , and the sensor element  5  is provided so as to overlap the concave portion  25 . Contact between the sensor elements  3 ,  4 , and  5  and the substrate  2  is suppressed by these concave portions  23 ,  24 , and  25 . 
     As such a substrate  2 , for example, a glass substrate made of a glass material containing alkali metal ions such as sodium ions, specifically, borosilicate glass such as Tempax glass and Pyrex glass (both registered trademark) can be used. However, a constituent material of the substrate  2  is not particularly limited, and a silicon substrate, a ceramic substrate, and the like may be used. 
     As illustrated in  FIG. 1 , the lid  6  is rectangular in plan view, and has a rectangular shape having a pair of sides  6   a  and  6   b  extending in the Y-axis direction, and a pair of sides  6   c  and  6   d  extending in the X-axis direction. However, the shape of the lid  6  in plan view is not particularly limited, and may be, for example, a polygon other than a rectangle, a circle, an irregular shape, or the like. The lid  6  also has a concave portion  61  that opens to the lower surface. As illustrated in  FIG. 2 , the lid  6  is bonded to the upper surface of the substrate  2  with the sensor elements  3 ,  4 , and  5  accommodated in the concave portion  61  formed inside thereof. The lid  6  and the substrate  2  form an accommodation space S in which the sensor elements  3 ,  4 , and  5  are airtightly accommodated. As such, the accommodation space S with high airtightness can be formed by directly bonding the lid  6  to the substrate  2 . The lid  6  is provided with a through-hole  62  that communicates the inside and outside of the accommodation space S and after the accommodation space S is made to have a desired atmosphere through the through-hole  62 , the through-hole  62  is sealed with a sealing material  63 . 
     The accommodation space S may be filled with inert gas such as nitrogen, helium, or argon, and may be at approximately atmospheric pressure at an operating temperature (for example, approximately −40° C. to +85° C.). By setting the accommodation space S to atmospheric pressure, viscous resistance is increased and a damping effect is exhibited, so that vibrations of the sensor elements  3 ,  4 , and  5  can be quickly converged. For that reason, a detection accuracy of the inertial sensor  1  is improved. 
     As such a lid  6 , for example, a silicon substrate can be used. However, the constituent material of the lid  6  is not particularly limited, and for example, a glass substrate or a ceramic substrate may be used as the lid  6 . Although a bonding method between the substrate  2  and the lid  6  is not particularly limited and may be appropriately selected depending on the materials of the substrate  2  and the lid  6 , in the first embodiment, the substrate  2  and the lid  6  are bonded through a bonding member  69  formed over the circumference of the lower surface of the lid  6 . As the bonding member  69 , for example, a glass frit material which is low melting point glass can be used. 
     As illustrated in  FIG. 1 , the lid  6  is disposed concentrically and in the same center as the substrate  2 , the sides  6   c  and  6   d  coincide with the sides  2   c  and  2   d  of the substrate  2 , and the side  6   a  is positioned at the plus side in the X-axis direction from the side  2   a , and the side  6   b  is positioned at the minus side in the-X axis direction from the side  2   b . An end portion on the minus side in the X-axis direction of the substrate  2  is exposed from the lid  6  and an end portion on the plus side in the X-axis direction of the substrate  2  is exposed from the lid  6 . Hereinafter, the exposed portion, specifically, the portion between the side  2   a  and the side  6   a  is also referred to as an “exposed portion  291 ”, and the portion between the side  2   b  and the side  6   b  is also referred to as an “exposed portion  292 ”. 
     The substrate  2  has a groove which opens to the upper surface thereof, and a plurality of wirings  731 ,  732 ,  733 ,  741 ,  742 ,  743 ,  751 ,  752 , and  753  and terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  are disposed in the groove. The wirings  731 ,  732 ,  733 ,  741 ,  742 ,  743 ,  751 ,  752 , and  753  are disposed inside and outside of the accommodation space S, and, among these wirings, the wirings  731 ,  732 , and  733  are electrically coupled to the sensor element  3 , the wirings  741 ,  742 , and  743  are electrically coupled to the sensor element  4 , and the wirings  751 ,  752 , and  753  are electrically coupled to the sensor element  5 . 
     The terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  are disposed on the exposed portions  291  and  292 , that is, outside the lid  6 . Then, the terminal  831  is electrically coupled to the wiring  731 , the terminal  832  is electrically coupled to the wiring  732 , the terminal  833  is electrically coupled to the wiring  733 , the terminal  841  is electrically coupled to the wiring  741 , The terminal  842  is electrically coupled to the wiring  742 , the terminal  843  is electrically coupled to the wiring  743 , the terminal  851  is electrically coupled to the wiring  751 , the terminal  852  is electrically coupled to the wiring  752 , and the terminal  853  is electrically coupled to the wiring  753 . 
     The wirings  731 ,  732 ,  733 ,  741 ,  742 ,  743 ,  751 ,  752 , and  753  and the terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  are each made of a metal film. With this configuration, the configurations of the wirings and terminals become simple. Examples of the constituent materials include metal materials such as gold (Au), silver (Ag), platinum (Pt), palladium (Pd), iridium (Ir), copper (Cu), aluminum (Al), nickel (Ni), chromium (Cr), Ti (titanium) and tungsten (W) and alloys containing these metal materials. 
     Next, the sensor elements  3 ,  4 , and  5  will be described with reference to  FIGS. 3 to 5 . The sensor elements  3 ,  4 , and  5  can be collectively formed by, for example, anodically bonding a silicon substrate doped with impurities such as phosphorus (P), boron (B), and arsenic (As) to the upper surface of the substrate  2  and patterning the silicon substrate by a Bosch process that is a deep groove etching technique. However, the method of forming the sensor elements  3 ,  4 , and  5  is not limited thereto. 
     The sensor element  3  can measure the acceleration Ax in the X-axis direction. As such a sensor element  3 , for example, as illustrated in  FIG. 3 , the sensor element  3  includes a fixed portion  31  fixed to a mount  231  protruding from the bottom surface of the concave portion  23 , a movable body  32  displaceable in the X-axis direction with respect to the fixed portion  31 , springs  33  and  34  coupling the fixed portion  31  and the movable body  32 , a first movable electrode  35  and a second movable electrode  36  provided in the movable body  32 , a first fixed electrode  38  fixed to a mount  232  protruding from the bottom surface of the concave portion  23  and facing the first movable electrode  35 , and a second fixed electrode  39  fixed to amount  233  protruding from the bottom surface of the concave portion  23  and facing the second movable electrode  36 . 
     The first and second movable electrodes  35  and  36  are electrically coupled to the wiring  731  in the fixed portion  31 , the first fixed electrode  38  is electrically coupled to the wiring  732 , and the second fixed electrode  39  is electrically coupled to the wiring  733 . Then, for example, a drive signal Vx in which a DC voltage and an AC voltage as illustrated in  FIG. 6  are superimposed is applied to the first and second movable electrodes  35  and  36  through the terminal  831 . On the other hand, a fixed voltage AGND (analog ground) is applied to the first and second fixed electrodes  38  and  39 , and the first and second fixed electrodes  38  and  39  are coupled to a charge amplifier through the terminals  832  and  833 . For that reason, capacitance Cx 1  is formed between the first movable electrode  35  and the first fixed electrode  38  and capacitance Cx 2  is formed between the second movable electrode  36  and the second fixed electrode  39 . When a potential difference is generated between the drive signal Vx and the fixed voltage AGND, charges corresponding to the voltage difference are induced between the first movable electrode  35  and the first fixed electrode  38  and between the second movable electrode  36  and the second fixed electrode  39 . When a charge amount induced between the first movable electrode  35  and the first fixed electrode  38  and a charge amount induced between the second movable electrode  36  and the second fixed electrode  39  are the same, a voltage value generated in the charge amplifier is zero. This represents that the acceleration Ax applied to the sensor element  3  is zero (stationary state). 
     Then, when the acceleration Ax is applied to the sensor element  3  in a state where the capacitances Cx 1  and Cx 2  are formed, the movable body  32  is displaced in the X-axis direction, and accordingly, the capacitances Cx 1  and Cx 2  change in opposite phases. For that reason, the charge amount induced between the first movable electrode  35  and the first fixed electrode  38  and the charge amount induced between the second movable electrode  36  and the second fixed electrode  39  also change, based on the change (differential operation) in the capacitances Cx 1  and Cx 2 . When a difference occurs between the charge amount induced between the first movable electrode  35  and the first fixed electrode  38  and the charge amount induced between the second movable electrode  36  and the second fixed electrode  39 , the difference is output as the voltage value of the charge amplifier. In this way, the acceleration Ax received by the sensor element  3  can be obtained. 
     The sensor element  4  can measure the acceleration Ay in the Y-axis direction. Such a sensor element  4  is not particularly limited, but, for example, as illustrated in  FIG. 4 , can be configured by rotating the sensor element  3  described above by 90 degrees around the Z-axis. That is, the sensor element  4  includes a fixed portion  41  fixed to a mount  241  protruding from the bottom surface of the concave portion  24 , a movable body  42  displaceable in the Y-axis direction with respect to the fixed portion  41 , springs  43  and  44  coupling the fixed portion  41  and the movable body  42 , a first movable electrode  45  and a second movable electrode  46  provided in the movable body  42 , a first fixed electrode  48  fixed to a mount  242  protruding from the bottom surface of the concave portion  24  and facing the first movable electrode  45 , and a second fixed electrode  49  fixed to a mount  243  protruding from the bottom surface of the concave portion  24  and facing the second movable electrode  46 . 
     The first and second movable electrodes  45  and  46  are electrically coupled to the wiring  741  in the fixed portion  41 , the first fixed electrode  48  is electrically coupled to the wiring  742 , and the second fixed electrode  49  is electrically coupled to the wiring  743 . Then, for example, a drive signal Vy in which a DC voltage and an AC voltage as illustrated in  FIG. 6  are superimposed is applied to the first and second movable electrodes  45  and  46  through the terminal  841 . On the other hand, the fixed voltage AGND (analog ground) is applied to the first and second fixed electrodes  48  and  49 , and the first and second fixed electrodes  48  and  49  are coupled to the charge amplifier through the terminals  842  and  843 . For that reason, capacitance Cy 1  is formed between the first movable electrode  45  and the first fixed electrode  48  and capacitance Cy 2  is formed between the second movable electrode  46  and the second fixed electrode  49 . When a potential difference is generated between the drive signal Vy and the fixed voltage AGND, charges corresponding to the voltage difference are induced between the first movable electrode  45  and the first fixed electrode  48  and between the second movable electrode  46  and the second fixed electrode  49 . When a charge amount induced between the first movable electrode  45  and the first fixed electrode  48  and a charge amount induced between the second movable electrode  46  and the second fixed electrode  49  are the same, a voltage value generated in the charge amplifier is zero. This represents that the acceleration Ay applied to the sensor element  4  is zero (stationary state). 
     Then, when the acceleration Ay is applied to the sensor element  4  in a state where the capacitances Cy 1  and Cy 2  are formed, the movable body  42  is displaced in the Y-axis direction, and accordingly, the capacitances Cy 1  and Cy 2  change in opposite phases. For that reason, the charge amount induced between the first movable electrode  45  and the first fixed electrode  48  and the charge amount induced between the second movable electrode  46  and the second fixed electrode  49  also change, based on the change (differential operation) in the capacitances Cy 1  and Cy 2 . When a difference occurs between the charge amount induced between the first movable electrode  45  and the first fixed electrode  48  and the charge amount induced between the second movable electrode  46  and the second fixed electrode  49 , the difference is output as the voltage value of the charge amplifier. In this way, the acceleration Ay received by the sensor element  4  can be obtained. 
     The sensor element  5  can measure the acceleration Az in the Z-axis direction. Such a sensor element  5  is not particularly limited, but, for example, as illustrated in  FIG. 5 , includes a fixed portion  51  fixed to a mount  251  protruding from the bottom surface of the concave portion  25  and a movable body  52  that is coupled to the fixed portion  51  through a beam  53  and is swingable around a swing axis J along the X-axis with respect to the fixed portion  51 . In the movable body  52 , the first movable portion  521  positioned at one side of the swing shaft J and the second movable portion  522  positioned at the other side thereof have different rotational moments around the swing shaft J. The sensor element  5  is disposed on the bottom surface of the concave portion  25 , and includes a first fixed electrode  54  disposed to face the first movable portion  521  and a second fixed electrode  55  disposed to face the second movable portion  522 . 
     The movable body  52  is electrically coupled to the wiring  751  in the fixed portion  51 , the first fixed electrode  54  is electrically coupled to the wiring  752 , and the second fixed electrode  55  is electrically coupled to the wiring  753 . Then, for example, a drive signal Vz in which a DC voltage and an AC voltage as illustrated in  FIG. 6  are superimposed is applied to the movable body  52  through the terminal  851 . On the other hand, the fixed voltage AGND (analog ground) is applied to the first and second fixed electrodes  54  and  55 , and the first and second fixed electrodes  54  and  55  are coupled to the charge amplifier through the terminals  852  and  853 . For that reason, capacitance Cz 1  is formed between the first movable portion  521  and the first fixed electrode  54  and capacitance Cz 2  is formed between the second movable portion  522  and the second fixed electrode  55 . When a potential difference is generated between the drive signal Vz and the fixed voltage AGND, charges corresponding to the voltage difference are induced between the first movable portion  521  and the first fixed electrode  54  and between the second movable portion  522  and the second fixed electrode  55 . When a charge amount induced between the first movable portion  521  and the first fixed electrode  54  and a charge amount induced between the second movable portion  522  and the second fixed electrode  55  are the same, a voltage value generated in the charge amplifier is zero. This represents that the acceleration Az applied to the sensor element  5  is zero (stationary state). 
     Then, when the acceleration Az is applied to the sensor element  5  in a state where the capacitances Cz 1  and Cz 2  are formed, the movable body  52  is displaced around the swing axis J, and accordingly, the capacitances Cz 1  and Cz 2  change in opposite phases. For that reason, the charge amount induced between the first movable portion  521  and the first fixed electrode  54  and the charge amount induced between the second movable portion  522  and the second fixed electrode  55  also change, based on the change (differential operation) in the capacitances Cz 1  and Cz 2 . When a difference occurs between the charge amount induced between the first movable portion  521  and the first fixed electrode  54  and the charge amount induced between the second movable portion  522  and the second fixed electrode  55 , the difference is output as the voltage value of the charge amplifier. In this way, the acceleration Az received by the sensor element  5  can be obtained. 
     Although the sensor elements  3 ,  4 , and  5  have been described as above, the configurations of the sensor elements  3 ,  4 , and  5  are not particularly limited as long as the accelerations Ax, Ay, and Az can be detected, respectively. 
     Next, the disposition of the terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  will be described in more detail. As described above, the terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  are respectively disposed on the exposed portions  291  and  292  of the substrate  2 . That is, the terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  are disposed separately on one side and the other side in the X-axis direction with respect to the lid  6 . 
     The terminals  831 ,  832 , and  833  are electrically coupled to the sensor element  3 , respectively. The terminal  831  is a first drive signal terminal for inputting the drive signal Vx to be applied to the sensor element  3 , and the terminals  832  and  833  are first detection signal terminals for detecting detection signals output from the sensor element  3 , that is, charges induced in the capacitances Cx 1  and Cx 2 . Hereinafter, for convenience of explanation, the terminal  831  is also referred to as a “first drive signal terminal  831 ”, and the terminals  832  and  833  are also referred to as “first detection signal terminals  832  and  833 ”. 
     Similarly, the terminals  841 ,  842 , and  843  are electrically coupled to the sensor element  4 , respectively. The terminal  841  is a second drive signal terminal for inputting a drive signal Vy to be applied to the sensor element  4 , and the terminals  842  and  843  are second detection signal terminals for detecting detection signals output from the sensor element  4 , that is, charges induced in the capacitances Cy 1  and Cy 2 . Hereinafter, for convenience of explanation, the terminal  841  is also referred to as a “second drive signal terminal  841 ”, and the terminals  842  and  843  are also referred to as “second detection signal terminals  842  and  843 ”. 
     Similarly, the terminals  851 ,  852 , and  853  are electrically coupled to the sensor element  5 , respectively. The terminal  851  is a third drive signal terminal for inputting the drive signal Vz to be applied to the sensor element  5 , and the terminals  852  and  853  are third detection signal terminals for detecting detection signals output from the sensor element  5 , that is, charges induced in the capacitances Cz 1  and Cz 2 . Hereinafter, for convenience of explanation, the terminal  851  is also referred to as a “third drive signal terminal  851 ”, and the terminals  852  and  853  are also referred to as “third detection signal terminals  852  and  853 ”. 
     As such, the terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  include two types of terminals, which are input and output terminals, that is, first, second, and third drive signal terminals  831 ,  841 , and  851  that are input terminals for drive signals Vx, Vy, and Vz, and first, second, and third detection signal terminals  832 ,  833 ,  842 ,  843 ,  852 , and  853  that are detection signal detection terminals. As illustrated in  FIG. 1 , the first, second, and third drive signal terminals  831 ,  841 , and  851  that are input terminals are provided on the exposed portion  292 , and the first, second, and third detection signal terminals  832 ,  833 ,  842 ,  843 ,  852 , and  853  that are detection terminals are provided on the exposed portion  291 . That is, the first, second, and third drive signal terminals  831 ,  841 , and  851  that are input terminals and the first, second, and third detection signal terminals  832 ,  833 ,  842 ,  843 ,  852 , and  853  that are detection terminals are provided at opposite sides with the lid  6  interposed between in plan view from the Z-axis direction. 
     By disposing the terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  in this way, the first, second, and third drive signal terminals  831 ,  841 ,  851  that are input terminals and the first, second, and third detection signal terminals  832 ,  833 ,  842 ,  843 ,  852 , and  853  that are detection terminals can be disposed sufficiently apart from each other. For that reason, the detection signals detected from the first, second, and third detection signal terminals  832 ,  833 ,  842 ,  843 ,  852 , and  853  are less likely to be mixed with the drive signals Vx, Vy, and Vz input from the first, second, and third drive signal terminals  831 ,  841 , and  851  as noise, degradation of the S/N ratio of the detection signals can be suppressed, and reliability of the detection signal is increased. In particular, since the detected charge amount is very weak with respect to the drive signals Vx, Vy, and Vz, when the first, second, and third detection signal terminals  832 ,  833 ,  842 ,  843 ,  852 , and  853 , that are detection terminals, are sufficiently spaced apart from the first, second, and third drive signal terminals  831 ,  841 , and  851 , that are input terminals, the influence of electromagnetic noise generated from the drive signal can be suppressed, and the effect described above is exceptional. Accordingly, highly accurate detection is possible. 
     In the first embodiment, a group of terminals  831 ,  832 , and  833  coupled to the sensor element  3  is disposed by being divided into the exposed portions  291  and  292 , a group of terminals  841 , 842  and  843  coupled to the sensor element  4  is disposed by being divided into the exposed portions  291  and  292 , and a group of terminals  851 ,  852  and  853  coupled to the sensor element  5  is disposed by being divided into the exposed portions  291  and  292 , but this is not limited thereto, and it suffices that at least one of the group of terminals  831 ,  832 , and  833 , the group of terminals  841 ,  842 , and  843 , and the group of terminals  851 ,  852 , and  853  is disposed by being divided into the exposed portions  291  and  292 . 
     As illustrated in  FIG. 1 , the first, second, and third drive signal terminals  831 ,  841  and  851  disposed in the exposed portion  291  are disposed side by side in a line in the Y-axis direction, respectively. With this configuration, the length of the exposed portion  291  in the X-axis direction can be shortened, and the inertial sensor  1  can be reduced in size. However, the disposition of the first, second, and third drive signal terminals  831 ,  841 , and  851  is not particularly limited. 
     Similarly, the first, second, and third detection signal terminals  832 ,  833 ,  842 ,  843 ,  852 , and  853  disposed in the exposed portion  292  are disposed side by side in a line in the Y-axis direction, respectively. With this configuration, the length of the exposed portion  292  in the X-axis direction can be shortened, and the inertial sensor  1  can be reduced in size. However, the disposition of the first, second, and third detection signal terminals  832 ,  833 ,  842 ,  843 ,  852 , and  853  is not particularly limited. 
     In the group of wirings  731 ,  732 , and  733  coupled to the sensor element  3 , the wiring  732  coupled to the first detection signal terminal  832 , that is, the first detection signal wiring, and the wiring  733  coupled to the first detection signal terminal  833 , that is, the second detection signal wiring have the same length. With this configuration, the parasitic capacitances and parasitic resistances of the wirings  732  and  733  are equal to each other, and these parasitic capacitances and parasitic resistances can be effectively canceled by a differential operation. For that reason, the inertial sensor  1  can measure the acceleration Ax with higher accuracy. 
     In the group of wirings  741 ,  742 , and  743  coupled to the sensor element  4 , the wirings  742  and  743  for detection signal have the same length. With this configuration, the parasitic capacitances and parasitic resistances of the wirings  742  and  743  are equal to each other, and these parasitic capacitances and parasitic resistances can be effectively canceled by the differential operation. For that reason, the inertial sensor  1  can measure the acceleration Ay with higher accuracy. 
     In the group of wirings  751 ,  752 , and  753  coupled to the sensor element  5 , the wirings  752  and  753  for detection signal have the same length. With this configuration, the parasitic capacitances and parasitic resistances of the wirings  752  and  753  are equal to each other, and these parasitic capacitances and parasitic resistances can be effectively canceled by the differential operation. For that reason, the inertial sensor  1  can measure the acceleration Az with higher accuracy. 
     The fact that the wirings  732  and  733  have the same length means that a case where the lengths of the wirings  732  and  733  have an error that may occur in manufacturing, for example, an error within ±5% is included, in addition to a case where the lengths of the wirings  732  and  733  coincide with each other. The configuration of the wirings  732  and  733  is not limited thereto, and the wirings  732  and  733  may have different lengths, for example. The same applies to the group of wirings  741 ,  742 , and  743  and the group of wirings  751 ,  752 , and  753  described below. 
     The inertial sensor  1  has been described as above. The inertial sensor  1  includes the substrate  2 , the sensor element  3  as the first inertial sensor element provided on the substrate  2 , and the lid  6  bonded to the substrate  2  so as to cover the sensor element  3 , the first drive signal terminal  831  that is provided outside the lid  6  and is for the drive signal Vx to be applied to the sensor element  3 , and the first detection signal terminals  832  and  833  that are provided on the outside of the lid  6  and are for detection signals output by the sensor element  3 . The first drive signal terminal  831  and the first detection signal terminals  832  and  833  are provided with the lid  6  interposed therebetween, in plan view of the substrate  2 , that is, plan view from the Z-axis direction. In the first embodiment, the first drive signal terminal  831  is provided at the plus side in the X-axis direction with respect to the lid  6 , and the first detection signal terminals  832  and  833  are provided at the minus side in the X-axis direction. 
     According to such a disposition, the first drive signal terminal  831  that is an input terminal and the first detection signal terminals  832  and  833  that are output terminals can be disposed sufficiently apart from each other. For that reason, it becomes difficult for the drive signal Vx input from the first drive signal terminal  831  to be mixed into the detection signals detected from the first detection signal terminals  832  and  833  as noise, and degradation of the S/N ratio of the detection signal can be suppressed. Accordingly, the acceleration in the X-axis direction can be measured with high accuracy. In particular, since the detection signal is a very weak signal with respect to the drive signal Vx, the effect described above is exceptional. 
     As described above, the inertial sensor  1  includes the sensor element  4  as the second inertial sensor element provided on the substrate  2 , the second drive signal terminal  841  that is provided on the outside of the lid  6  and is for the drive signal Vy to be applied to the sensor element  4 , and the second detection signal terminals  842  and  843  that are provided on the outside of the lid  6  and are for detection signals output by the sensor element  4 . In plan view of the substrate  2 , the second drive signal terminal  841  and the second detection signal terminals  842  and  843  are provided with the lid  6  interposed therebetween. 
     According to such a disposition, the second drive signal terminal  841  that is an input terminal and the second detection signal terminals  842  and  843  that are output terminals can be disposed sufficiently apart from each other. For that reason, it becomes difficult for the drive signal Vy input from the second drive signal terminal  841  to be mixed into the detection signals detected from the second detection signal terminals  842  and  843  as noise, and degradation of the S/N ratio of the detection signal can be suppressed. Accordingly, the acceleration in the Y-axis direction can be measured with high accuracy. In particular, since the detection signal is a very weak signal with respect to the drive signal Vy, the effect described above is exceptional. 
     Furthermore, the second drive signal terminal  841  is positioned at the same side as the first drive signal terminal  831  with respect to the lid  6 , and the second detection signal terminals  842  and  843  are positioned at the same side as the first detection signal terminals  832  and  833  with respect to the lid  6 . For that reason, it becomes difficult for the drive signals Vx and Vy input from the first and second drive signal terminals  831  and  841  to be mixed into the detection signals detected from the first and second detection signal terminals  832 ,  833 ,  842 , and  843  as noise, and degradation of the S/N ratio of each detection signals can be suppressed. Accordingly, the acceleration in the X-axis direction and the Y-axis direction can be measured with high accuracy. 
     As described above, the inertial sensor  1  includes a pair of first detection signal terminals  832  and  833 , the wiring  732  as a first detection signal wiring that electrically connects one first detection signal terminal  832  and the sensor element, and the wiring  733  as a second detection signal wiring that electrically connects the other first detection signal terminal  833  and the sensor element  3 . The wiring  732  and the wiring  733  have the same length. With this configuration, the parasitic capacitances and parasitic resistances of the wirings  732  and  733  are equal to each other, and these parasitic capacitances and parasitic resistances can be effectively canceled by the differential operation. For that reason, the inertial sensor  1  can measure the acceleration Ax with higher accuracy. 
     As described above, each of the terminals  831 ,  832 , and  833  is made of a metal film provided on the substrate  2 . With this configuration, the configuration of the terminals  831 ,  832 , and  833  is simplified. 
     Second Embodiment 
       FIG. 7  is a cross-sectional view illustrating an inertial sensor of the second embodiment.  FIGS. 8 and 9  are cross-sectional views each illustrating a mounting table disposed on a substrate.  FIG. 8  corresponds to a cross-section taken along an imaginary line α 1  in  FIG. 1 , and  FIG. 9  corresponds to a cross-section taken along an imaginary line α 2  in  FIG. 1 . 
     The second embodiment is the same as the first embodiment described above except that the bonding method of the substrate  2  and the lid  6  and the disposition of the terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  are different. In the following description, the second embodiment will be described with a focus on differences from the first embodiment described above, and description of similar matters will be omitted. In  FIGS. 7 to 9 , the same reference numerals are given to the same configurations as those in the first embodiment described above. 
     As illustrated in  FIG. 7 , the inertial sensor  1  includes an intermediate member  10  disposed between the substrate  2  and the lid  6 . The intermediate member  10  has a frame shape surrounding the sensor elements  3 ,  4 , and  5  in plan view from the Z-axis direction. As illustrated in  FIGS. 8 and 9 , the inertial sensor  1  includes a mounting table  9  disposed on the exposed portions  291  and  292  of the substrate  2 . The intermediate member  10  and the mounting table  9  are made of the same material as the sensor elements  3 ,  4 , and  5 , respectively. For that reason, the intermediate member  10  and the mounting table  9  can be collectively formed with the sensor elements  3 ,  4 , and  5 . Specifically, the intermediate member  10  and the mounting table  9  can be collectively formed with the sensor elements  3 ,  4 , and  5  by patterning a conductive silicon substrate that is anodically bonded to the substrate  2  by a Bosch process. For that reason, the inertial sensor  1  can be easily manufactured. 
     As illustrated in  FIGS. 8 and 9 , the mounting table  9  includes a mounting table  931  that is electrically coupled to the wiring  731  through a bump B 31 , a mounting table  932  that is electrically coupled to the wiring  732  through a bump B 32 , a mounting table  933  that is electrically coupled to the wiring  733  through a bump B 33 , a mounting table  941  that is electrically coupled to the wiring  741  through a bump B 41 , a mounting table  942  that is electrically coupled to the wiring  742  through a bump B 42 , a mounting table  943  that is electrically coupled to the wiring  743  through a bump B 43 , a mounting table  951  that is electrically coupled to the wiring  751  through a bump B 51 , a mounting table  952  that is electrically coupled to the wiring  752  through a bump B 52 , and a mounting table  953  that is electrically coupled to the wiring  753  through a bump B 53 . 
     Then, the terminal  831  is provided on the top surface of the mounting table  931 , the terminal  832  is provided on the top surface of the mounting table  932 , the terminal  833  is provided on the top surface of the mounting table  933 , the terminal  841  is provided on the top surface of the mounting table  941 , the terminal  842  is provided on the top surface of the mounting table  942 , the terminal  843  is provided on the top surface of the mounting table  943 , the terminal  851  is provided on the top surface of the mounting table  951 , the terminal  852  is provided on the top surface of the mounting table  952 , and the terminal  853  is provided on the top surface of the mounting table  953 . For that reason, the terminal  831  is electrically coupled to the wiring  731  through the mounting table  931 , the terminal  832  is electrically coupled to the wiring  732  through the mounting table  932 , the terminal  833  is electrically coupled to the wiring  733  through the mounting table  933 , the terminal  841  is electrically coupled to the wiring  741  through the mounting table  941 , the terminal  842  is electrically coupled to the wiring  742  through the mounting table  942 , the terminal  843  is electrically coupled to the wiring  743  through the mounting table  943 , the terminal  851  is electrically coupled to the wiring  751  through the mounting table  951 , the terminal  852  is electrically coupled to the wiring  752  through the mounting table  952 , and the terminal  853  is electrically coupled to the wiring  753  through the mounting table  953 . 
     As such, by disposing the terminals  831  to  833 ,  841  to  843 , and  851  to  853  on the mounting tables  931  to  933 ,  941  to  943 , and  951  to  953 , the terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  can be provided at positions protruding upward from the substrate  2 . For that reason, for example, bonding wires can be easily coupled to the terminals  831  to  833 ,  841  to  843 , and  851  to  853 , and electrical connection between the inertial sensor  1  and an external device can be easily performed. 
     As illustrated in  FIG. 7 , a bonding member  69  is provided on the top surface of the intermediate member  10 , and the intermediate member  10  and the lid  6  are bonded by the bonding member  69 . In particular, in the second embodiment, the bonding member  69  is made of a metal material, and the bonding member  69  and the lid  6  are bonded by being thermocompression-bonded with each other. However, the bonding method of the bonding member  69  or the intermediate member  10  and the lid  6  is not particularly limited. 
     In the second embodiment, the terminals  831  to  833 ,  841  to  843 , and  851  to  853  and the bonding member  69  are made of the same material. With this configuration, the terminals  831  to  833 ,  841  to  843 , and  851  to  853  and the bonding member  69  can be collectively formed, and the terminals  831  to  833 ,  841  to  843 , and  851  to  853  and the bonding member  69  can be easily formed. Specifically, by depositing a metal film on the upper surface of the conductive silicon substrate that is a base material of the sensor elements  3 ,  4 , and  5 , the intermediate member  10 , and the mounting table  9 , and patterning this metal film, the terminals  831  to  833 ,  841  to  843 , and  851  to  853  and the bonding member  69  can be collectively formed. 
     The constituent materials of the terminals  831  to  833 ,  841  to  843 , and  851  to  853  and the bonding member  69  are not particularly limited, but, for example, an aluminum (Al)/germanium (Ge)-based alloy can be used. Since this material is excellent in adhesiveness, airtightness of the accommodation space S can be more reliably ensured. 
     As described above, in the inertial sensor  1  of the second embodiment, the plurality of terminals  831  to  833 ,  841  to  843 , and  851  to  853  are provided on the substrate  2  and provided on the mounting table  9  made of the same material as the sensor elements  3 ,  4 , and  5 . With this configuration, the terminals  831  to  833 ,  841  to  843 , and  851  to  853  can be disposed at positions protruding upward from the substrate  2 . For that reason, for example, the bonding wires can be easily coupled to the terminals  831  to  833 ,  841  to  843 , and  851  to  853 , and the inertial sensor  1  and the external device can be easily electrically coupled. By configuring the mounting table  9  with the same material as the sensor elements  3 ,  4 , and  5 , the mounting table  9  can be formed together with the sensor elements  3 ,  4 , and  5 , and thus the inertial sensor  1  can be easily manufactured. 
     As described above, the inertial sensor  1  includes the bonding member  69  that is provided between the substrate  2  and the lid  6  and bonds the substrate  2  and the lid  6 . The bonding member  69  contains the same material as the plurality of terminals  831  to  833 ,  841  to  843 , and  851  to  853 . With this configuration, the bonding member  69  and the terminals  831  to  833 ,  841  to  843 , and  851  to  853  can be collectively formed, and thus the inertial sensor  1  can be easily manufactured. 
     According to the second embodiment as described above, the same effects as those of the first embodiment described above can be exhibited. 
     Third Embodiment 
       FIG. 10  is a partially enlarged plan view illustrating an inertial sensor of a third embodiment. 
     The third embodiment is the same as the first embodiment described above except that an inspection terminal  100  electrically coupled to the terminals  831  to  833 ,  841  to  843 , and  851  to  853  is included. In the following description, the third embodiment will be described with a focus on differences from the first and second embodiments, and description of similar matters will be omitted. In  FIG. 10 , the same reference numerals are given to the same configurations as those in the first and second embodiments described above. 
     As illustrated in  FIG. 10 , the inertial sensor  1  includes an inspection terminal  100  provided on the exposed portions  291  and  292  of the substrate  2  and is electrically coupled to the terminals  831  to  833 ,  841  to  843 , and  851  to  853 . 
     The inspection terminal  100  includes an inspection terminal  131  that is disposed side by side with the terminal  831  and is electrically coupled to the terminal  831 , an inspection terminal  132  that is disposed side by side with the terminal  832  and is electrically coupled to the terminal  832 , an inspection terminal  133  that is disposed side by side with the terminal  833  and is electrically coupled to the terminal  833 , an inspection terminal  141  that is disposed side by side with the terminal  841  and is electrically coupled to the terminal  841 , an inspection terminal  142  that is disposed side by side with the terminal  842  and is electrically coupled to the terminal  842 , an inspection terminal  143  that is disposed side by side with the terminal  843  and is electrically coupled to the terminal  843 , an inspection terminal  151  that is disposed side by side with the terminal  851  and is electrically coupled to the terminal  851 , an inspection terminal  152  that is disposed side by side with the terminal  852  and is electrically coupled to the terminal  852 , and an inspection terminal  153  that is disposed side by side with the terminal  853  and is electrically coupled to the terminal  853 . 
     By providing such inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153 , for example, the inertial sensor  1  can be inspected by pressing an inspection probe against the inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153 , and thus the terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  are not damaged during inspection. For that reason, the bonding wire and each terminal can be coupled well, and the inertial sensor  1  with high reliability is obtained. 
     In the third embodiment, the inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153  have a shape in plan view different from that of the terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853 , respectively. Each of the inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153  has a circular shape in plan view, and the shape in plan view is rotationally symmetric. As such, by making the shape of the inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153  in plan view different from that of the terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  and setting the shape of the inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153  in plan view to be rotationally symmetric, the inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153  can be easily recognized by an image recognition technique when the inertial sensor  1  is inspected, for example. 
     However, the shape of the inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153  is not particularly limited, and the shape of the inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153  may be the same shape as the terminal  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  or may be a shape other than the rotationally symmetric shape. 
     As described above, the inertial sensor  1  of the third embodiment includes a plurality of inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153  that are coupled to the plurality of terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  and have a shape in plan view different from that of the plurality of terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853 . With this configuration, the inspection of the inertial sensor  1  can be performed using the inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153 , and thus the terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  will not be damaged during inspection. For that reason, the inertial sensor  1  with high reliability is obtained. Also, by making the shapes of the inspection terminals and terminals different from each other, the inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153  and the terminals  831 ,  832 ,  833 ,  841 ,  842 ,  843 ,  851 ,  852 , and  853  can be easily identified. 
     As described above, the shapes of the plurality of inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153  in plan view are rotationally symmetric. With this configuration, the inspection terminals  131 ,  132 ,  133 ,  141 ,  142 ,  143 ,  151 ,  152 , and  153  can be easily recognized by an image recognition technique, and the inertial sensor  1  can be inspected more smoothly. 
     As described above, the input terminals  831 ,  841 , and  851  and the detection terminals  832 ,  833 ,  842 ,  843 ,  852 , and  853  are provided at opposite sides with the lid  6  interposed therebetween, but the inspection terminals  100  coupled to these input terminals and detection terminals are also disposed in the same manner. With this configuration, the same effect as that of the first embodiment described above can be exhibited not only during normal operation of the inertial sensor  1  but also during inspection using the inspection terminal  100 . 
     Fourth Embodiment 
       FIG. 11  is a plan view illustrating an inertial sensor of the fourth embodiment.  FIG. 12  is a plan view illustrating an example of a sensor element that measures an angular velocity around the X-axis.  FIG. 13  is a plan view illustrating an example of a sensor element that measures an angular velocity around the Y-axis.  FIG. 14  is a plan view illustrating an example of a sensor element that measures an angular velocity around the Z-axis.  FIG. 15  is a graph illustrating a voltage applied to the sensor element. In  FIG. 11 , for convenience of explanation, the sensor elements  300 ,  400 , and  500  are illustrated in a simplified manner. 
     The fourth embodiment is the same as the first embodiment described above except that sensor elements  300 ,  400 , and  500  are used instead of the sensor elements  3 ,  4 , and  5 . In the following description, the fourth embodiment will be described with a focus on differences from the first to third embodiments described above, and description of similar matters will be omitted. In  FIGS. 11 to 15 , the same reference numerals are given to the same configurations as those in the first to third embodiments described above. 
     The inertial sensor  1  illustrated in  FIG. 11  is an angular velocity sensor that can independently measure angular velocities around the X-, Y-, and Z-axes that are orthogonal to each other. Such an inertial sensor  1  includes the substrate  2 , three sensor elements  300 ,  400 , and  500  disposed on the substrate  2 , and the lid  6  that accommodates the sensor elements  300 ,  400 , and  500  and is bonded to the substrate  2 . Of the three sensor elements  300 ,  400 , and  500 , the sensor element  300  (first inertial sensor element) measures an angular velocity ox around the X-axis, the sensor element  400  (second inertial sensor element) measures the angular velocity coy around the Y-axis, and the sensor element  500  (third inertial sensor element) measures the angular velocity oz around the Z-axis. 
     The accommodation space S formed by the substrate  2  and the lid  6  may be in a reduced pressure state, and particularly may be in a vacuum state. By setting the accommodation space S in a decompressed state, viscous resistance is reduced and the sensor elements  300 ,  400 , and  500  can be vibrated effectively. For that reason, detection accuracy of the inertial sensor  1  is improved. A highly airtight accommodation space S can be formed by directly bonding the lid  6  to the substrate  2 . 
     In addition, the substrate  2  has a groove that open to its upper surface, and a plurality of wirings  7310 ,  7320 ,  7330 ,  7340 ,  7350 ,  7360 ,  7370 ,  7410 ,  7420 ,  7430 ,  7440 ,  7450 ,  7460 ,  7470 ,  7510 ,  7520 ,  7530 ,  7540 ,  7550 ,  7560 , and  7570  and terminals  8310 ,  8320 ,  8330 ,  8340 ,  8350 ,  8360 ,  8370 ,  8410 ,  8420 ,  8430 ,  8440 ,  8450 ,  8460 ,  8470 ,  8510 ,  8520 ,  8530 ,  8540 ,  8550 ,  8560 , and  8570  are disposed in the groove. 
     The wirings  7310  to  7370 ,  7410  to  7470 ,  7510  to  7570  are disposed inside and outside of the accommodation space S, and, among these wirings, each of the wirings  7310  to  7370  is electrically coupled to the sensor element  300 , each of the wirings  7410  to  7470  is electrically coupled to the sensor element  400 , and each of the wirings  7510  to  7570  is electrically coupled to the sensor element  500 . The terminals  8310  to  8370 ,  8410  to  8470 , and  8510  to  8570  are positioned outside the lid  6  and are provided by being divided into the exposed portions  291  and  292 . The terminals  8310  to  8370  are electrically coupled to the wirings  7310  to  7370 , the terminals  8410  to  8470  are electrically coupled to the wirings  7410  to  7470 , and the terminals  8510  to  8570  are electrically coupled to the wirings  7510  to  7570 . 
     Similar to the sensor elements  3 ,  4 , and  5  of the first embodiment described above, the sensor elements  300 ,  400 , and  500  can be collectively formed by anodically bonding a silicon substrate doped with impurities such as phosphorus (P), boron (B), and arsenic (As) to the upper surface of the substrate  2  and patterning the silicon substrate by a Bosch process that is a deep groove etching technique. However, the method of forming the sensor elements  300 ,  400 ,  500  is not limited thereto. 
     The sensor element  300  can measure the angular velocity ωx around the X-axis. As illustrated in  FIG. 12 , such a sensor element  300  includes, for example, frame-like drive movable bodies  301 A and  301 B, drive springs  302 A and  302 B for supporting the drive movable bodies  301 A and  301 B so as to vibrate in the Y-axis direction, movable drive electrodes  303 A and  303 B coupled to the drive movable bodies  301 A and  301 B, first and second fixed drive electrodes  304 A and  305 A disposed with the movable drive electrode  303 A interposed therebetween, first and second fixed drive electrodes  304 B and  305 B disposed with the movable drive electrode  303 B interposed therebetween, detection movable bodies  306 A and  306 B disposed inside the drive movable bodies  301 A and  301 B, detection springs  307 A and  307 B coupling the detection movable bodies  306 A and  306 B and the drive movable bodies  301 A and  301 B, first movable monitor electrodes  308 A and  308 B and second movable monitor electrodes  309 A and  309 B coupled to the drive movable bodies  301 A and  301 B, first fixed monitor electrodes  310 A and  310 B disposed to face the first movable monitor electrodes  308 A and  308 B, and second fixed monitor electrodes  311 A and  311 B disposed to face the second movable monitor electrodes  309 A and  309 B. Further, fixed detection electrodes  312 A and  312 B are disposed on the bottom surface of the concave portion  23  so as to face the drive movable bodies  301 A and  301 B. 
     Although not illustrated, the detection movable bodies  306 A and  306 B are electrically coupled to the wiring  7310 , the first fixed drive electrodes  304 A and  304 B are electrically coupled to the wiring  7320 , the second fixed drive electrodes  305 A and  305 B are electrically coupled to the wiring  7330 , the fixed detection electrode  312 A is electrically coupled to the wiring  7340 , the fixed detection electrode  312 B is electrically coupled to the wiring  7350 , the first fixed monitor electrodes  310 A and  310 B are electrically coupled to the wiring  7360 , and the second fixed monitor electrodes  311 A and  311 B are electrically coupled to the wiring  7370 . 
     Then, for example, a drive signal V 11  illustrated in  FIG. 15  is applied to the detection movable bodies  306 A and  306 B via the terminal  8310 . A drive signal V 12  illustrated in  FIG. 15  is applied to the first fixed drive electrodes  304 A and  304 B via the terminal  8320 , and a drive signal V 13  illustrated in  FIG. 15  is applied to the second fixed drive electrodes  305 A and  305 B via the terminal  8330 . The drive signal V 11  is, for example, 15 V, the drive signal V 12  is, for example, a voltage having amplitude of ±0.2 V with respect to the analog ground AGND, and the drive signal V 13  is, for example, a voltage, whose phase is opposite to the drive signal V 12 , having amplitude of ±0.2 V with respect to the analog ground AGND. With this configuration, the drive movable bodies  301 A and  301 B are driven to vibrate in the Y-axis direction in opposite phases. During this drive vibration, a first pickup signal corresponding to the driving vibration is detected from the terminal  8360 , and a second pickup signal corresponding to the drive vibration is detected from the terminal  8370 . By feeding the first and second pickup signals back to the drive signals, that is, the drive signals V 12  and V 13 , the drive vibration of the drive movable bodies  301 A and  301 B is stabilized. 
     On the other hand, the fixed detection electrodes  312 A and  312 B are coupled to the charge amplifier through terminals  8340  and  8350 . For that reason, the capacitance Cx 1  is formed between the detection movable body  306 A and the fixed detection electrode  312 A, and the capacitance Cx 2  is formed between the detection movable body  306 B and the fixed detection electrode  312 B. When the angular velocity ωx around the X-axis is applied to the sensor element  300  in a state where the drive movable bodies  301 A and  301 B are in drive vibration, the detection movable bodies  306 A and  306 B are displaced in the Z-axis direction in opposite phases with each other by the Coriolis force, and accordingly the capacitances Cx 1  and Cx 2  change in opposite phases. For that reason, the amount of charge induced between the detection movable body  306 A and the fixed detection electrode  312 A and the amount of charge induced between the detection movable body  306 B and the fixed detection electrode  312 B also change based on the changes in the capacitances Cx 1  and Cx 2 . When a difference occurs between the charge amount induced between the detection movable body  306 A and the fixed detection electrode  312 A and the charge amount induced between the detection movable body  306 B and the fixed detection electrode  312 B, the difference is output as the voltage value of the charge amplifier. In this way, the angular velocity ωx received by the sensor element  300  can be obtained. 
     The sensor element  400  can measure the angular velocity coy around the Y-axis. Such a sensor element  400  is not particularly limited, but, for example, as illustrated in  FIG. 13 , can be configured by rotating the sensor element  300  described above by 90 degrees around the Z-axis. 
     That is, as illustrated in  FIG. 13 , such a sensor element  400  includes, for example, frame-like drive movable bodies  401 A and  401 B, drive springs  402 A and  402 B for supporting the drive movable bodies  401 A and  401 B so as to vibrate in the Y-axis direction, movable drive electrodes  403 A and  403 B coupled to the drive movable bodies  401 A and  401 B, first and second fixed drive electrodes  404 A and  405 A disposed with the movable drive electrode  403 A interposed therebetween, first and second fixed drive electrodes  404 B and  405 B disposed with the movable drive electrode  403 B interposed therebetween, detection movable bodies  406 A and  406 B disposed inside the drive movable bodies  401 A and  401 B, detection springs  407 A and  407 B coupling the detection movable bodies  406 A and  406 B and the drive movable bodies  401 A and  401 B, first movable monitor electrodes  408 A and  408 B and second movable monitor electrodes  409 A and  409 B coupled to the drive movable bodies  401 A and  401 B, first fixed monitor electrodes  410 A and  410 B disposed to face the first movable monitor electrodes  408 A and  408 B, and second fixed monitor electrodes  411 A and  411 B disposed to face the second movable monitor electrodes  409 A and  409 B. Further, fixed detection electrodes  412 A and  412 B are disposed on the bottom surface of the concave portion  24  so as to face the drive movable bodies  401 A and  401 B. 
     Although not illustrated, the detection movable bodies  406 A and  406 B are electrically coupled to the wiring  7410 , the first fixed drive electrodes  404 A and  404 B are electrically coupled to the wiring  7420 , and the second fixed drive electrodes  405 A and  405 B are electrically coupled to the wiring  7430 , the fixed detection electrode  412 A is electrically coupled to the wiring  7440 , the fixed detection electrode  412 B is electrically coupled to the wiring  7450 , the first fixed monitor electrodes  410 A and  410 B are coupled to the wiring  7460 , and the second fixed monitor electrodes  411 A and  411 B are electrically coupled to the wiring  7470 . 
     Then, for example, the drive signal V 11  illustrated in  FIG. 15  is applied to the detection movable bodies  406 A and  406 B via the terminal  8410 . The drive signal V 12  illustrated in  FIG. 15  is applied to the first fixed drive electrodes  404 A and  404 B via the terminal  8420 , and the drive signal V 13  illustrated in  FIG. 15  is applied to the second fixed drive electrodes  405 A and  405 B via the terminal  8430 . The drive signal V 11  is, for example, 15 V, the drive signal V 12  is, for example, a voltage having amplitude of ±0.2 V with respect to the analog ground AGND, and the drive signal V 13  is, for example, a voltage, whose phase is opposite to the drive signal V 12 , having amplitude of ±0.2 V with respect to the analog ground AGND. With this configuration, the drive movable bodies  401 A and  401 B are driven to vibrate in the X-axis direction in opposite phases. During this drive vibration, a first pickup signal corresponding to the driving vibration is detected from the terminal  8460 , and a second pickup signal corresponding to the drive vibration is detected from the terminal  8470 . By feeding the first and second pickup signals back to the drive signals, that is, the drive signals V 12  and V 13 , the drive vibration of the drive movable bodies  401 A and  401 B is stabilized. 
     On the other hand, the fixed detection electrodes  412 A and  412 B are coupled to the charge amplifier through terminals  8440  and  8450 . For that reason, the capacitance Cy 1  is formed between the detection movable body  406 A and the fixed detection electrode  412 A, and the capacitance Cy 2  is formed between the detection movable body  406 B and the fixed detection electrode  412 B. When the angular velocity coy around the Y-axis is applied to the sensor element  400  in a state where the drive movable bodies  401 A and  401 B are in drive vibration, the detection movable bodies  406 A and  406 B are displaced in the Z-axis direction in opposite phases with each other by the Coriolis force, and accordingly the capacitances Cy 1  and Cy 2  change in opposite phases. For that reason, the amount of charge induced between the detection movable body  406 A and the fixed detection electrode  412 A and the amount of charge induced between the detection movable body  406 B and the fixed detection electrode  412 B also change based on the changes in the capacitances Cy 1  and Cy 2 . When a difference occurs between the charge amount induced between the detection movable body  406 A and the fixed detection electrode  412 A and the charge amount induced between the detection movable body  406 B and the fixed detection electrode  412 B, the difference is output as the voltage value of the charge amplifier. In this way, the angular velocity coy received by the sensor element  400  can be obtained. 
     The sensor element  500  can measure the angular velocity ωz around the Z-axis. Such a sensor element  500  is not particularly limited, but, as illustrated in  FIG. 14 , includes, for example, frame-like drive movable bodies  501 A and  501 B, drive springs  502 A and  502 B for supporting the drive movable bodies  501 A and  501 B so as to vibrate in the Y-axis direction, movable drive electrodes  503 A and  503 B coupled to the drive movable bodies  501 A and  501 B, first and second fixed drive electrodes  504 A and  505 A disposed with the movable drive electrode  503 A interposed therebetween, first and second fixed drive electrodes  504 B and  505 B disposed with the movable drive electrode  503 B interposed therebetween, detection movable bodies  506 A and  506 B disposed inside the drive movable bodies  501 A and  501 B, detection springs  507 A and  507 B coupling the detection movable bodies  506 A and  506 B and the drive movable bodies  501 A and  501 B, first movable monitor electrodes  508 A and  508 B and second movable monitor electrodes  509 A and  509 B coupled to the drive movable bodies  501 A and  501 B, first fixed monitor electrodes  510 A and  510 B disposed to face the first movable monitor electrodes  508 A and  508 B, second fixed monitor electrodes  511 A and  511 B disposed to face the second movable monitor electrodes  509 A and  509 B, movable detection electrodes  512 A and  512 B supported by detection movable bodies  506 A and  506 B, the first and second fixed detection electrodes  513 A and  514 A disposed with the movable detection electrode  512 A interposed therebetween, and the first and second fixed detection electrodes  513 B and  514 B disposed with the movable detection electrode  512 B interposed therebetween. 
     Although not illustrated, the detection movable bodies  506 A and  506 B are electrically coupled to the wiring  7510 , the first fixed drive electrodes  504 A and  504 B are electrically coupled to the wiring  7520 , and the second fixed drive electrodes  505 A and  505 B are electrically coupled to the wiring  7530 , the first fixed detection electrodes  513 A and  513 B are electrically coupled to the wiring  7540 , the second fixed detection electrodes  514 A and  514 B are electrically coupled to the wiring  7550 , the first fixed monitor electrodes  510 A and  510 B are electrically coupled to the wiring  7560 , and the second fixed monitor electrodes  511 A and  511 B are electrically coupled to the wiring  7570 . 
     Then, for example, the drive signal V 11  illustrated in  FIG. 15  is applied to the detection movable bodies  506 A and  506 B via the terminal  8510 . The drive signal V 12  illustrated in  FIG. 15  is applied to the first fixed drive electrodes  504 A and  504 B via a terminal  8520 , and the drive signal V 13  illustrated in  FIG. 15  is applied to the second fixed drive electrodes  505 A and  505 B via the terminal  8530 . The drive signal V 11  is, for example, 15 V, the drive signal V 12  is, for example, a voltage having amplitude of ±0.2 V with respect to the analog ground AGND, and the drive signal V 13  is, for example, a voltage, whose phase is opposite to the drive signal V 12 , having amplitude of ±0.2 V with respect to the analog ground AGND. With this configuration, the drive movable bodies  501 A and  501 B are driven to vibrate in the Y-axis direction in opposite phases. During this drive vibration, a first pickup signal corresponding to the driving vibration is detected from the terminal  8560 , and a second pickup signal corresponding to the drive vibration is detected from the terminal  8570 . By feeding the first and second pickup signals back to the drive signals, that is, the drive signals V 12  and V 13 , the drive vibration of the drive movable bodies  501 A and  501 B is stabilized. 
     On the other hand, the first fixed detection electrodes  513 A and  513 B are coupled to the charge amplifier through the terminal  8540 , and the second fixed detection electrodes  514 A and  514 B are coupled to the charge amplifier through the terminal  8550 . For that reason, the capacitance Cz 1  is formed between the movable detection electrodes  512 A and  512 B and the first fixed detection electrodes  513 A and  513 B, and the capacitance Cz 2  is formed between the movable detection electrodes  512 A and  512 B and the second fixed detection electrodes  514 A and  514 B. When the angular velocity oz around the Z-axis is applied to the sensor element  500  in a state where the drive movable bodies  501 A and  501 B are in drive vibration, the detection movable bodies  506 A and  506 B are displaced in the X-axis direction in opposite phases with each other by the Coriolis force, and accordingly the capacitances Cz 1  and Cz 2  change in opposite phases. For that reason, the amount of charge induced between the movable detection electrodes  512 A and  512 B and the first fixed detection electrodes  513 A and  513 B, and the amount of charge induced between the movable detection electrodes  512 A and  512 B and the second fixed detection electrodes  514 A and  514 B also change based on the changes in the capacitances Cz 1  and Cz 2 . When a difference occurs between the charge amount induced between the movable detection electrodes  512 A and  512 B and the first fixed detection electrodes  513 A and  513 B and the charge amount induced between the movable detection electrodes  512 A and  512 B and the second fixed detection electrodes  514 A and  514 B, the difference is output as the voltage value of the charge amplifier. In this way, the angular velocity ωz received by the sensor element  500  can be obtained. 
     The sensor elements  300 ,  400 , and  500  have been described as above. The configurations of the sensor elements  300 ,  400 , and  500  are not particularly limited as long as the angular velocities ωx, ωy, and ωz can be detected. 
     Next, the disposition of the terminals  8310  to  8370 ,  8410  to  8470 , and  8510  to  8570  will be described in more detail. 
     Each of the terminals  8310  to  8370  is electrically coupled to the sensor element  300 . The terminals  8310 ,  8320 , and  8330  are first drive signal terminals for inputting the drive signals V 11  to V 13  to the sensor element  300 , the terminals  8340  and  8350  are first detection signal terminals for detecting the detection signals detected by the sensor element  300 , that is, signals corresponding to the capacitances Cx 1  and Cx 2 , and the terminals  8360  and  8370  are first pickup signal terminals for detecting the first and second pickup signals detected by the sensor element  300 . Hereinafter, for convenience of explanation, the terminals  8310 ,  8320 , and  8330  are also referred to as “first drive signal terminals  8310 ,  8320 , and  8330 ”, the terminals  8340  and  8350  are also referred to as “first detection signal terminals  8340  and  8350 ”, and the terminals  8360  and  8370  are also referred to as “first pickup signal terminals  8360  and  8370 ”. 
     Similarly, each of the terminals  8410  to  8470  is electrically coupled to the sensor element  400 . The terminals  8410 ,  8420 , and  8430  are second drive signal terminals for inputting the drive signals V 11  to V 13  to the sensor element  400 , the terminals  8440  and  8450  are second detection signal terminals for detecting the detection signals detected by the sensor element  400 , that is, signals corresponding to the capacitances Cy 1  and Cy 2 , and the terminals  8460  and  8470  are second pickup signal terminals for detecting the first and second pickup signals detected by the sensor element  400 . Hereinafter, for convenience of explanation, the terminals  8410 ,  8420 , and  8430  are also referred to as “second drive signal terminals  8410 ,  8420 , and  8430 ”, the terminals  8440  and  8450  are also referred to as “second detection signal terminals  8440  and  8450 ”, and the terminals  8460  and  8470  are also referred to as “second pickup signal terminals  8460  and  8470 ”. 
     Similarly, each of the terminals  8510  to  8570  is electrically coupled to the sensor element  500 . The terminals  8510 ,  8520 , and  8530  are third drive signal terminals for inputting the drive signals V 11  to V 13  to the sensor element  500 , the terminals  8540  and  8550  are third detection signal terminals for detecting the detection signals detected by the sensor element  500 , that is, signals corresponding to the capacitances Cz 1  and Cz 2 , and the terminals  8560  and  8570  are third pickup signal terminals for detecting the first and second pickup signals detected by the sensor element  500 . Hereinafter, for convenience of explanation, the terminals  8510 ,  8520 , and  8530  are also referred to as “third drive signal terminals  8510 ,  8520 , and  8530 ”, the terminals  8540  and  8550  are also referred to as “third detection signal terminals  8540  and  8550 ”, and the terminals  8560  and  8570  are also referred to as “third pickup signal terminals  8560  and  8570 ”. 
     As such, the terminals  8310  to  8370 ,  8410  to  8470 , and  8510  to  8570  include the first, second, and third drive signal terminals  8310  to  8330 ,  8410  to  8430 , and  8510  to  8530  that are input terminals for the drive signals V 11 , V 12 , and V 13 , the first, second, and third detection signal terminals  8340 ,  8350 ,  8440 ,  8450 ,  8540 , and  8550  that are detection terminals for the detection signals, and the first, second, and third pickup signal terminals  8360 ,  8370 ,  8460 ,  8470 ,  8560 , and  8570  that are detection terminals for the first and second pickup signals. 
     As illustrated in  FIG. 11 , the first, second, and third drive signal terminals  8310  to  8330 ,  8410  to  8430 , and  8510  to  8530  are provided on the exposed portion  292 , the first, second, and third detection signal terminals  8340 ,  8350 ,  8440 ,  8450 ,  8540 , and  8550  are provided on the exposed portion  291 , and the first, second, and third pickup signal terminals  8360 ,  8370 ,  8460 ,  8470 ,  8560 , and  8570  are provided on the exposed portion  292 . That is, the first, second, and third drive signal terminals  8310  to  8330 ,  8410  to  8430 , and  8510  to  8530 , the first, second, and third pickup signal terminals  8360 ,  8370 ,  8460 ,  8470 ,  8560 , and  8570 , and the first, second, and third detection signal terminals  8340 ,  8350 ,  8440 ,  8450 ,  8540 , and  8550  are provided at opposite sides with the lid  6  interposed therebetween in plan view from the Z-axis direction. 
     By disposing the terminals  8310  to  8370 ,  8410  to  8470 , and  8510  to  8570  in this way, the first, second, and third detection signal terminals  8340 ,  8350 ,  8440 ,  8450 ,  8540 , and  8550  can be disposed sufficiently apart from the first, second, and third drive signal terminals  8310  to  8330 ,  8410  to  8430 , and  8510  to  8530 . For that reason, it becomes difficult for the drive signals V 11 , V 12 , and V 13  input from the first, second, and third drive signal terminals  8310  to  8330 ,  8410  to  8430 , and  8510  to  8530  to be mixed into the detection signals detected from the first, second, and third detection signal terminals  8340 ,  8350 ,  8440 ,  8450 ,  8540 , and  8550  as noise, and degradation of the S/N ratio of the detection signals can be suppressed. Since the detection signals are very weak signals with respect to the drive signals V 11 , V 12 , and V 13 , the effect described above is exceptional. 
     Furthermore, the first, second, and third detection signal terminals  8340 ,  8350 ,  8440 ,  8450 ,  8540 , and  8550  can be disposed sufficiently apart from the first, second, and third pickup signal terminals  8360 ,  8370 ,  8460 ,  8470 ,  8560 , and  8570 . For that reason, it becomes difficult for the first and second pickup signals detected from the first, second, and third pickup signal terminals  8360 ,  8370 ,  8460 ,  8470 ,  8560 , and  8570  to be mixed into the detection signals detected from the first, second, and third detection signal terminals  8340 ,  8350 ,  8440 ,  8450 ,  8540 , and  8550  as noise, and degradation of the S/N ratio of the detection signals can be suppressed. 
     As described above, in the inertial sensor  1  of the fourth embodiment, the sensor element  300  as the first inertial sensor element is a gyro sensor element that measures an angular velocity, and includes the drive movable bodies  301 A and  301 B that vibrate with respect to the substrate  2 . The inertial sensor  1  includes the first pickup signal terminals  8360  and  8370  that are provided outside the lid  6  and are for pickup signals corresponding to vibrations of the drive movable bodies  301 A and  301 B detected by the sensor element  300 . The first pickup signal terminals  8360  and  8370  are positioned at the same side as the first drive signal terminals  8310  to  8330  with respect to the lid  6 , that is, on the plus side in the X-axis direction. With this configuration, the first detection signal terminals  8340  and  8350  can be disposed sufficiently apart from the first pickup signal terminals  8360  and  8370 . For that reason, it becomes difficult for the pickup signals detected from the first pickup signal terminals  8360  and  8370  to be mixed into the detection signals detected from the first detection signal terminals  8340  and  8350  as noise, and degradation of the S/N ratio of the detection signals can be suppressed. 
     According to the fourth embodiment as described above, the same effect as that of the first embodiment described above can also be exhibited. 
     Fifth Embodiment 
       FIG. 16  is a plan view illustrating an inertial sensor of the fifth embodiment.  FIG. 17  is a plan view illustrating an example of a sensor element. In  FIG. 16 , for convenience of explanation, the sensor elements  300 ,  400 , and  500  are illustrated in a simplified manner. 
     The fifth embodiment is the same as the first and fourth embodiments described above, except that the sensor elements  300 ,  400 , and  500  of the fourth embodiment described above are integrated. In the following description, the fifth embodiment will be described with a focus on differences from the embodiments described above, and description of similar matters will be omitted. In  FIGS. 16 to 17 , the same reference numerals are given to the same configurations as those of the embodiments described above. 
     In the inertial sensor  1  illustrated in  FIG. 16 , three sensor elements  300 ,  400 , and  500  are integrated. As illustrated in  FIG. 17 , the movable drive electrodes  303 A and  303 B, the first and second fixed drive electrodes  304 A,  304 B,  305 A, and  305 B, the first and second movable monitor electrodes  308 A,  308 B,  309 A, and  309 B, and the first and second fixed monitor electrodes  310 A,  310 B,  311 A, and  311 B of the sensor element  300  also serve as corresponding portions of the sensor elements  400  and  500 . For that reason, compared to the configuration of the fourth embodiment described above, the movable drive electrodes  403 A and  403 B, the first and second fixed drive electrodes  404 A,  404 B,  405 A, and  405 B, the first and second movable monitor electrodes  408 A,  408 B,  409 A, and  409 B, and the first and second fixed monitor electrodes  410 A,  410 B,  411 A, and  411 B are omitted from the sensor element  400 , and the movable drive electrodes  503 A and  503 B, the first and second fixed drive electrodes  504 A,  504 B,  505 A, and  505 B, the first and second movable monitor electrodes  508 A,  508 B,  509 A, and  509 B, and the first and second fixed monitor electrodes  510 A,  510 B,  511 A, and  511 B are omitted from the sensor element  500 . 
     As illustrated in  FIG. 17 , the sensor element  300  includes the frame-like drive movable bodies  301 A and  301 B, drive springs  302 A and  302 B for supporting the drive movable bodies  301 A and  301 B so as to vibrate in the Y-axis direction, movable drive electrodes  303 A and  303 B coupled to the drive movable bodies  301 A and  301 B, first and second fixed drive electrodes  304 A and  305 A disposed with the movable drive electrode  303 A interposed therebetween, first and second fixed drive electrodes  304 B and  305 B disposed with the movable drive electrode  303 B interposed therebetween, detection movable bodies  306 A and  306 B provided inside the drive movable bodies  301 A and  301 B, detection springs  307 A and  307 B coupling the detection movable bodies  306 A and  306 B and the drive movable bodies  301 A and  301 B, first movable monitor electrode  308 A provided on the movable drive electrode  303 A, second movable monitor electrode  309 B provided on the movable drive electrode  303 B, first fixed monitor electrode  310 A disposed to face the first movable monitor electrode  308 A, and second fixed monitor electrode  311 B disposed to face the second movable monitor electrodes  309 B. The fixed detection electrodes  312 A and  312 B are disposed on the bottom surface of the concave portion  23  so as to face the drive movable bodies  301 A and  301 B. 
     Although not illustrated, the detection movable bodies  306 A and  306 B are electrically coupled to the wiring  7310 , the first fixed drive electrodes  304 A and  304 B are electrically coupled to the wiring  7320 , the second fixed drive electrodes  305 A and  305 B are electrically coupled to the wiring  7330 , the fixed detection electrode  312 A is electrically coupled to the wiring  7340 , the fixed detection electrode  312 B is electrically coupled to the wiring  7350 , the first fixed monitor electrode  310 A is electrically coupled to the wiring  7360 , and the second fixed monitor electrode  311 B is electrically coupled to the wiring  7370 . 
     The sensor element  400  includes the frame-like drive movable bodies  401 A and  401 B, drive springs  402 A and  402 B for supporting the drive movable bodies  401 A and  401 B so as to vibrate in the X-axis direction, detection movable bodies  406 A and  406 B disposed inside the drive movable bodies  401 A and  401 B, detection springs  407 A and  407 B coupling the detection movable bodies  406 A and  406 B and the drive movable bodies  401 A and  401 B, conversion units  413 A and  413 B that are provided between the movable drive electrodes  303 A and  303 B and the drive movable bodies  401 A and  401 B and convert vibrations in the Y-axis direction of the movable drive electrodes  303 A and  303 B into vibrations in the X-axis direction. The fixed detection electrodes  412 A and  412 B are disposed on the bottom surface of the concave portion  23  so as to face the drive movable bodies  401 A and  401 B. 
     Although not illustrated, the fixed detection electrode  412 A is electrically coupled to the wiring  7440 , and the fixed detection electrode  412 B is electrically coupled to the wiring  7450 . 
     The sensor element  500  includes the frame-like drive movable bodies  501 A and  501 B, drive springs  502 A and  502 B for supporting the drive movable bodies  501 A and  501 B so as to vibrate in the Y-axis direction, frame-like detection movable bodies  506 A and  506 B disposed inside the drive movable bodies  501 A and  501 B, detection springs  507 A and  507 B coupling the detection movable bodies  506 A and  506 B and the drive movable bodies  501 A and  501 B, movable detection electrodes  512 A and  512 B supported by the detection movable bodies  506 A and  506 B, first and second fixed detection electrodes  513 A and  514 A disposed with the movable detection electrode  512 A interposed therebetween, and first and second fixed detection electrodes  513 B and  514 B disposed with the movable detection electrode  512 B interposed therebetween. 
     Although not illustrated, the first fixed detection electrodes  513 A and  513 B are electrically coupled to the wiring  7540 , and the second fixed detection electrodes  514 A and  514 B are electrically coupled to the wiring  7550 . 
     According to such a configuration, a part of the sensor elements  400  and  500  can be omitted, so that the inertial sensor  1  can be reduced in size as compared with the fourth embodiment described above. As illustrated in  FIG. 16 , the wirings  7340  and  7350  can be disposed symmetrically with respect to the center line Lx that passes through the center O of the inertial sensor  1  and extends in the X-axis direction, and it becomes easy to design the lengths of the wirings  7340  and  7350  equal to each other. The same applies to the wirings  7440  and  7450 , and the same applies to the wirings  7540  and  7550 . 
     Sixth Embodiment 
       FIG. 18  is a plan view illustrating an inertial sensor unit of the sixth embodiment.  FIG. 19  is a cross-sectional view of the inertial sensor unit illustrated in  FIG. 18 . 
     An inertial sensor unit  1000  illustrated in  FIGS. 18 and 19  includes a package  1010 , an IC chip  1040  and an inertial sensor  1  that are accommodated in the package  1010 . In the IC chip  1040 , for example, a drive control circuit that controls driving of the inertial sensor  1  and a detection circuit that measures accelerations Ax, Ay, and Az based on detection signals from the inertial sensor  1  are included. In the sixth embodiment, the configuration of the first embodiment described above is used as the configuration of the inertial sensor  1 , but the configuration of the inertial sensor  1  is not particularly limited thereto and may be any of those configurations of other embodiments. 
     The package  1010  includes a base substrate  1020  having a concave portion  1021  which opens to the upper surface, and a lid  1030  bonded to the upper surface of the base substrate  1020  so as to close the opening of the concave portion  1021 . The concave portion  1021  includes a first concave portion  1022  which opens to the upper surface of the base substrate  1020  and a second concave portion  1023  which opens to the bottom surface of the first concave portion  1022 . An IC chip  1040  is mounted on the bottom surface of the second concave portion  1023  and the inertial sensor  1  is mounted on the IC chip  1040 . The terminals  831  to  833 ,  841  to  843 , and  851  to  853  of the inertial sensor  1  are electrically coupled to corresponding terminals of IC chip  1040  through bonding wires BW 1 . Since the terminals  831  to  833 ,  841  to  843 , and  851  to  853  of the inertial sensor  1  are disposed as described above, it becomes difficult for noise to be mixed into the detection signal detected from the inertial sensor  1 . 
     A plurality of internal terminals  1050  that are electrically coupled to the IC chip  1040  through bonding wires BW 2  are disposed on the bottom surface of the first concave portion  1022 . A plurality of external terminals  1060  that are electrically coupled to a plurality of internal terminals  1050  through internal wirings (not illustrated) disposed in the base substrate  1020  are disposed on the lower surface of the base substrate  1020 . 
     Such an inertial sensor unit  1000  includes the inertial sensor  1 . For that reason, the effects of the inertial sensor  1  described above can be obtained and high reliability can be exhibited. 
     Seventh Embodiment 
       FIG. 20  is a plan view illustrating a smartphone of a seventh embodiment. 
     In the smartphone  1200  illustrated in  FIG. 20 , the inertial sensor  1  and a control circuit  1210  that performs control based on detection signals detected from the inertial sensor  1  are incorporated. Detection data detected by the inertial sensor  1  is transmitted to the control circuit  1210 , and the control circuit  1210  can recognize the attitude and behavior of the smartphone  1200  from the received detection data, change a display image displayed on a display unit  1208 , generate an alarm sound or sound effect, or drive the vibration motor to vibrate the main body. 
     The smartphone  1200  as such an electronic apparatus includes the inertial sensor  1  and the control circuit  1210  that performs control based on a detection signal output from the inertial sensor  1 . For that reason, the effect of the inertial sensor  1  described above can be obtained and high reliability can be exhibited. 
     The electronic apparatus incorporating the inertial sensor  1  is not particularly limited, and includes, for example, a personal computer, a digital still camera, a tablet terminal, a timepiece, a smartwatch, an ink jet printer, a laptop personal computer, a TV, a wearable terminals such as HMD (head mounted display), a video camera, a video tape recorder, a car navigation device, a pager, an electronic datebook, an electronic dictionary, a calculator, an electronic game machine, a word processor, a work station, a videophone, a security TV monitor, electronic binoculars, a POS terminal, medical equipment, a fish finder, various measuring instruments, mobile terminal base station equipment, various instruments of vehicles, aircraft, and ships, a flight simulator, a network server, and the like, in addition to the smartphone  1200 . 
     Eighth Embodiment 
       FIG. 21  is an exploded perspective view illustrating an inertia measurement device according to an eighth embodiment.  FIG. 22  is a perspective view of a substrate included in the inertia measurement device illustrated in  FIG. 21 . 
     An inertia measurement device  2000  (IMU: Inertial measurement Unit) illustrated in  FIG. 21  is an inertia measurement device that detects the attitude and behavior of amounted device such as an automobile or a robot. The inertia measurement device  2000  functions as a six-axis motion sensor including three-axis acceleration sensors and three-axis angular velocity sensors. 
     The inertia measurement device  2000  is a rectangular parallelepiped having a substantially square planar shape. Screw holes  2110  as fixed portions are formed in the vicinity of two vertices positioned in the diagonal direction of the square. Through two screws in the two screw holes  2110 , the inertia measurement device  2000  can be fixed to the mounted surface of the mounted object such as an automobile. The size of the inertia measurement device  2000  can be reduced such that the device can be mounted on a smartphone or a digital still camera, for example, by selection of parts or design change. 
     The inertia measurement device  2000  has a configuration in which an outer case  2100 , a bonding member  2200 , and a sensor module  2300  are included and the sensor module  2300  is inserted in the outer case  2100  with the bonding member  2200  interposed therebetween. Similarly to the overall shape of the inertia measurement device  2000  described above, the outer shape of the outer case  2100  is a rectangular parallelepiped having a substantially square planar shape, and screw holes  2110  are formed in the vicinity of two vertices positioned in the diagonal direction of the square. In addition, the outer case  2100  has a box shape and the sensor module  2300  is accommodated therein. 
     Further, the sensor module  2300  includes an inner case  2310  and a substrate  2320 . The inner case  2310  is a member for supporting the substrate  2320 , and has a shape that fits inside the outer case  2100 . A concave portion  2311  for suppressing contact with the substrate  2320  and an opening  2312  for exposing a connector  2330  described later are formed in the inner case  2310 . Such an inner case  2310  is bonded to the outer case  2100  through the bonding member  2200 . The substrate  2320  is bonded to the lower surface of the inner case  2310  through an adhesive. 
     As illustrated in  FIG. 21 , a connector  2330 , an angular velocity sensor  2340   z  for measuring the angular velocity around the Z-axis, an acceleration sensor  2350  for measuring acceleration in each axis direction of the X-axis, the Y-axis, and the Z-axis and the like are mounted on the upper surface of the substrate  2320 . An angular velocity sensor  2340   x  for measuring the angular velocity around the X-axis and an angular velocity sensor  2340   y  for measuring the angular velocity around the Y-axis are mounted on the side surface of the substrate  2320 . As these sensors, the inertial sensor of the embodiments can be used. 
     A control IC  2360  is mounted on the lower surface of the substrate  2320 . The control IC  2360  is a micro controller unit (MCU) and controls each unit of the inertia measurement device  2000 . In the storing unit, programs defining the order and contents for measuring the acceleration and angular velocity, programs for digitizing detected data and incorporating the detected data into packet data, accompanying data, and the like are stored. In addition, a plurality of electronic components are mounted on the substrate  2320 . 
     Ninth Embodiment 
       FIG. 23  is a block diagram illustrating the entire system of a vehicle positioning device according to a ninth embodiment.  FIG. 24  is a diagram illustrating the operation of the vehicle positioning device illustrated in  FIG. 23 . 
     A vehicle positioning device  3000  illustrated in  FIG. 23  is a device which is used by being mounted on a vehicle and performs positioning of the vehicle. The vehicle is not particularly limited, and may be any of a bicycle, an automobile, a motorcycle, a train, an airplane, a ship, and the like, but in the seventh embodiment, description will be made on a four-wheeled automobile as the vehicle. 
     The vehicle positioning device  3000  includes an inertia measurement device  3100  (IMU), a computation processing unit  3200 , a GPS reception unit  3300 , a receiving antenna  3400 , a position information acquisition unit  3500 , a position synthesis unit  3600 , a processing unit  3700 , a communication unit  3800 , and a display  3900 . As the inertia measurement device  3100 , for example, the inertia measurement device  2000  described above can be used. 
     The inertia measurement device  3100  includes a tri-axis acceleration sensor  3110  and a tri-axis angular velocity sensor  3120 . The computation processing unit  3200  receives acceleration data from the acceleration sensor  3110  and angular velocity data from the angular velocity sensor  3120 , performs inertial navigation computation processing on these data, and outputs inertial navigation positioning data including acceleration and attitude of the vehicle. 
     The GPS reception unit  3300  receives a signal from the GPS satellite through the receiving antenna  3400 . Further, the position information acquisition unit  3500  outputs GPS positioning data representing the position (latitude, longitude, altitude), speed, direction of the vehicle positioning device  3000  based on the signal received by the GPS reception unit  3300 . The GPS positioning data also includes status data indicating a reception state, a reception time, and the like. 
     Based on inertial navigation positioning data output from the computation processing unit  3200  and the GPS positioning data output from the position information acquisition unit  3500 , the position synthesis unit  3600  calculates the position of the vehicle, more specifically, the position on the ground where the vehicle is traveling. For example, even if the position of the vehicle included in the GPS positioning data is the same, as illustrated in  FIG. 24 , if the attitude of the vehicle is different due to the influence of inclination θ of the ground or the like, the vehicle is traveling at different positions on the ground. For that reason, it is impossible to calculate an accurate position of the vehicle with only GPS positioning data. Therefore, the position synthesis unit  3600  calculates the position on the ground where the vehicle is traveling, using inertial navigation positioning data. 
     The position data output from the position synthesis unit  3600  is subjected to predetermined processing by the processing unit  3700  and displayed on the display  3900  as a positioning result. Further, the position data may be transmitted to the external apparatus by the communication unit  3800 . 
     Tenth Embodiment 
       FIG. 25  is a perspective view illustrating a vehicle according to a tenth embodiment of the disclosure. 
     An automobile  1500  as the vehicle illustrated in  FIG. 25  includes at least one system  1510  of an engine system, a brake system, and a keyless entry system. The inertial sensor  1  is incorporated in the automobile  1500 , and the attitude of the vehicle body can be measured by the inertial sensor  1 . The detection signal of the inertial sensor  1  is supplied to the control device  1502 , and the control device  1502  can control the system  1510  based on the signal. 
     As such, the automobile  1500  as the vehicle includes the inertial sensor  1  and the control device  1502  that performs control based on the detection signal output from the inertial sensor  1 . For that reason, the effect of the inertial sensor  1  described above can be obtained and high reliability can be exhibited. 
     In addition, the inertial sensor  1  can also be widely applied to a car navigation system, a car air conditioner, an anti-lock braking system (ABS), an air bag, a tire pressure monitoring system (TPMS), an engine controller, and an electronic control unit (ECU) such as a battery monitor of a hybrid car or an electric automobile. Also, the vehicle is not limited to the automobile  1500 , but can also be applied to an airplane, a rocket, a satellite, a ship, an automated guided vehicle (AGV), a biped walking robot, an unmanned airplane such as a drone, and the like. 
     Although the inertial sensor according to the present disclosure, the electronic apparatus, and the vehicle according to the present disclosure have been described based on the embodiments, the disclosure is not limited thereto. The configuration of each unit can be replaced with any configuration having the same function.