JP2016085179A5 - - Google Patents

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JP2016085179A5
JP2016085179A5 JP2014219772A JP2014219772A JP2016085179A5 JP 2016085179 A5 JP2016085179 A5 JP 2016085179A5 JP 2014219772 A JP2014219772 A JP 2014219772A JP 2014219772 A JP2014219772 A JP 2014219772A JP 2016085179 A5 JP2016085179 A5 JP 2016085179A5
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axis
vibration element
outer edge
disposed
terminal
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JP2014219772A
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JP2016085179A (en
JP6442984B2 (en
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Priority to JP2014219772A priority Critical patent/JP6442984B2/en
Priority claimed from JP2014219772A external-priority patent/JP6442984B2/en
Priority to US14/886,681 priority patent/US10295346B2/en
Publication of JP2016085179A publication Critical patent/JP2016085179A/en
Publication of JP2016085179A5 publication Critical patent/JP2016085179A5/ja
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Publication of JP6442984B2 publication Critical patent/JP6442984B2/en
Priority to US16/378,967 priority patent/US10520312B2/en
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Description

このような振動素子では、一方の支持部に検出信号端子、検出接地端子および駆動信号端子が配置されており、他方の支持部に検出信号端子、検出接地端子および駆動接地端子が配置されており、検出信号端子および駆動信号端子が、支持部の下面と上面とに跨って配置されている。このように、検出信号端子および駆動信号端子が、支持部の下面と上面とに跨って配置されることで、これら端子の面積が大きくなってしまう。したがって、検出信号端子および駆動信号端子からノイズが混入し易く、検出精度が低下するという問題がある。 In such a vibration element, the detection signal terminal, the detection ground terminal, and the drive signal terminal are disposed on one support part, and the detection signal terminal, the detection ground terminal, and the drive ground terminal are disposed on the other support part. The detection signal terminal and the drive signal terminal are disposed across the lower surface and the upper surface of the support portion. As described above, the detection signal terminal and the drive signal terminal are disposed across the lower surface and the upper surface of the support portion, so that the area of these terminals is increased. Therefore, there is a problem that noise is easily mixed from the detection signal terminal and the drive signal terminal, and the detection accuracy is lowered.

図1は、本発明の好適な実施形態に係る物理量検出振動素子を示す平面図である。図2は、図1に示す物理量検出振動素子が有する電極を示す平面図である。図3は、図1に示す物理量検出振動素子が有する電極を示す平面図(透過図)である。なお、図1では、説明の便宜上、電極の図示を省略している。また、以下では、図1に示すように、水晶の結晶軸をx軸(電気軸)、y軸(機械軸)および軸(光軸)とし、x軸に沿った方向を「x軸方向」とも言い、y軸に沿った方向を「y軸方向」とも言い、z軸に沿った方向を「z軸方向」とも言う。 FIG. 1 is a plan view showing a physical quantity detection vibrating element according to a preferred embodiment of the present invention. FIG. 2 is a plan view showing electrodes included in the physical quantity detection vibrating element shown in FIG. FIG. 3 is a plan view (transmission diagram) showing electrodes of the physical quantity detection vibrating element shown in FIG. In FIG. 1, for convenience of explanation, illustration of electrodes is omitted. In the following, as shown in FIG. 1, the crystal axis of the crystal is the x-axis (electric axis), the y-axis (mechanical axis), and the z- axis (optical axis), and the direction along the x-axis is referred to as “x-axis direction”. ", The direction along the y-axis is also referred to as" y-axis direction ", and the direction along the z-axis is also referred to as" z-axis direction ".

このようなベース21には配線24が配置されている。配線24は、第1凹部211aの底面に配置され、ボンディングワイヤーBWを介してIC3と電気的に接続された複数の内部端子241と、ベース21の底面に配置され、対応する内部端子241と電気的に接続された複数の外部端子242と、を有している。また、配線24は、ベース21内に形成された内部配線243や切り欠き部212に形成されたキャスタレーション電極244を有し、これらを介して各内部端子241とそれに対応する外部端子242とが電気的に接続されている。このような配線24は、例えば、タングステン(W)、モリブテン(Mo)、マンガン(Mn)等で構成することができ、ベース21から露出している部分(例えば、内部端子241、外部端子242、キャスタレーション電極244)については、その表面に金(Au)などのめっき金属層を形成してもよい。 Wiring 24 is arranged on such a base 21. The wiring 24 is disposed on the bottom surface of the first recess 211a, and is disposed on the bottom surface of the base 21 and a plurality of internal terminals 241 that are electrically connected to the IC 3 via the bonding wires BW. And a plurality of external terminals 242 connected to each other. In addition, the wiring 24 has an internal wiring 243 formed in the base 21 and a castellation electrode 244 formed in the notch 212, and through these, the internal terminals 241 and the external terminals 242 corresponding thereto are connected. Electrically connected. Such wiring 24 can be made of, for example, tungsten (W), molybdenum (Mo), manganese ( Mn ), or the like, and is exposed from the base 21 (for example, the internal terminal 241, the external terminal 242, As for the castellation electrode 244), a plated metal layer such as gold (Au) may be formed on the surface thereof.

まず、振動素子4の配置について説明する。振動素子4は、図6に示すように、検出軸JがY軸と一致するように配置されている。これにより、振動素子4によって角速度ωyを検出することができる。また、振動素子4は、IC3の上面の外縁32側および外縁34側に片寄った位置に配置されている。また、振動素子4の+X軸側(振動素子4と外縁32との間)には第3端子配置領域SS3が位置し、振動素子4の−X軸側(振動素子4と外縁31との間)には第2端子配置領域SS2が位置している。また、振動素子4は、調整振動腕441、442が平面視でIC3の外縁34から+Y軸側へはみ出して配置されている。すなわち、振動素子4は、調整振動腕441、442が平面視でIC3と重ならないように配置されている。 First, the arrangement of the vibration element 4 will be described. Vibrating element 4, as shown in FIG. 6, the detection axis J 4 are arranged to coincide with the Y-axis. Thereby, the angular velocity ωy can be detected by the vibration element 4. Further, the vibration element 4 is disposed at a position offset toward the outer edge 32 side and the outer edge 34 side of the upper surface of the IC 3. The third terminal arrangement region SS3 is located on the + X axis side of the vibration element 4 (between the vibration element 4 and the outer edge 32), and the −X axis side of the vibration element 4 (between the vibration element 4 and the outer edge 31). ) Is the second terminal arrangement region SS2. The vibration element 4 is arranged such that the adjustment vibration arms 441 and 442 protrude from the outer edge 34 of the IC 3 to the + Y axis side in a plan view. That is, the vibration element 4 is disposed so that the adjustment vibration arms 441 and 442 do not overlap with the IC 3 in plan view.

次に、振動素子5の配置について説明する。振動素子5は、図6に示すように、検出軸JがX軸と一致するように配置されている。これにより、振動素子5によって角速度ωxを検出することができる。また、振動素子5は、IC3の上面の外縁32側および外縁33側に片寄った位置に配置されている。そのため、振動素子5は、振動素子4に対して−Y軸側(振動素子4と外縁33との間)に位置している。また、振動素子5の−X軸側(振動素子5と外縁31との間)には第1端子配置領域SS1が位置している。また、振動素子5は、調整振動腕541、542が平面視でIC3の外縁32から+X軸側へはみ出して配置されている。 Next, the arrangement of the vibration element 5 will be described. Vibrating element 5, as shown in FIG. 6, the detection axis J 5 are arranged to coincide with the X axis. Thereby, the angular velocity ωx can be detected by the vibration element 5. Further, the vibration element 5 is disposed at a position offset toward the outer edge 32 side and the outer edge 33 side of the upper surface of the IC 3. Therefore, the vibration element 5 is located on the −Y axis side (between the vibration element 4 and the outer edge 33) with respect to the vibration element 4. The first terminal arrangement region SS <b> 1 is located on the −X axis side of the vibration element 5 (between the vibration element 5 and the outer edge 31). Further, the vibration element 5 is arranged such that the adjustment vibration arms 541 and 542 protrude from the outer edge 32 of the IC 3 to the + X axis side in a plan view.

JP2014219772A 2014-10-28 2014-10-28 Physical quantity detection vibration element, physical quantity sensor, electronic device and moving object Active JP6442984B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2014219772A JP6442984B2 (en) 2014-10-28 2014-10-28 Physical quantity detection vibration element, physical quantity sensor, electronic device and moving object
US14/886,681 US10295346B2 (en) 2014-10-28 2015-10-19 Physical quantity detecting vibration element, physical quantity sensor, electronic apparatus, and moving object
US16/378,967 US10520312B2 (en) 2014-10-28 2019-04-09 Physical quantity detecting vibration element, physical quantity sensor, electronic apparatus, and moving object

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JP2014219772A JP6442984B2 (en) 2014-10-28 2014-10-28 Physical quantity detection vibration element, physical quantity sensor, electronic device and moving object

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JP2016085179A JP2016085179A (en) 2016-05-19
JP2016085179A5 true JP2016085179A5 (en) 2017-12-14
JP6442984B2 JP6442984B2 (en) 2018-12-26

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US10690500B2 (en) 2017-03-28 2020-06-23 Seiko Epson Corporation Sensor element, sensor, electronic apparatus, and vehicle
JP2020144062A (en) * 2019-03-08 2020-09-10 セイコーエプソン株式会社 Vibration device, electronic apparatus, and movable body

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JPH08210860A (en) * 1994-11-28 1996-08-20 Nippondenso Co Ltd Angular speed sensor
DE19544338A1 (en) * 1994-11-28 1996-05-30 Nippon Denso Co Angular velocity sensor for vehicle movement control, navigation system or video camera
JP2010256332A (en) * 2009-04-02 2010-11-11 Seiko Epson Corp Vibrating reed, vibrator, and physical quantity detector
JP2012098033A (en) * 2010-10-29 2012-05-24 Panasonic Corp Angular velocity sensor
JP2012198099A (en) * 2011-03-22 2012-10-18 Seiko Epson Corp Inertial sensor

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