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Functional device, electronic apparatus, and moving object

A technology for functional components and electronic equipment, which is applied in the direction of transmitting sensing components, measuring devices, instruments, etc. using electric/magnetic devices, and can solve problems such as not easy restriction, electrode damage, loss of electrostatic capacitance, etc.

Inactive Publication Date: 2015-03-18
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned functional elements are not easy to limit the displacement of the movable body in the rotational direction when the movable body is viewed from above.
Therefore, there is a problem that, when the movable body is displaced in the rotational direction due to excessive acceleration or the like, the fixed electrode and the movable electrode provided on the movable body will come into contact, thereby The problem that the measurement of a functional element stops due to the loss of the electrostatic capacitance generated between the two electrodes
In addition, there is also the possibility that the fixed electrode will contact the movable electrode and cause damage to the two electrodes.

Method used

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  • Functional device, electronic apparatus, and moving object
  • Functional device, electronic apparatus, and moving object
  • Functional device, electronic apparatus, and moving object

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0051] use figure 1 as well as figure 2 Functional elements related to the first embodiment will be described.

[0052] figure 1 It is a schematic plan view showing the functional elements according to the first embodiment. figure 2 for figure 1 An enlarged schematic view of the part indicated by the dotted line A1 in . For the convenience of explanation, in figure 1 as well as figure 2 The illustration of the cover body is omitted in . In addition, in figure 1 as well as figure 2 In FIG. 3 , an X-axis, a Y-axis, and a Z-axis are shown as three mutually orthogonal axes, and the Z-axis is an axis indicating the thickness direction in which the substrate and the element portion overlap.

[0053] Construction of functional element 1

[0054] figure 1 as well as figure 2 The shown functional element 1 of this embodiment has a substrate 2 , an element portion 3 provided on the substrate 2 , and a wiring portion 4 electrically connected to the element portion 3 .

...

no. 2 approach

[0128] use image 3 as well as Figure 4 Functional elements of the second embodiment will be described.

[0129] image 3 It is a schematic plan view showing functional elements according to the second embodiment. Figure 4 for image 3 An enlarged schematic view of the part indicated by the dotted line A2 in . For the convenience of explanation, image 3 as well as Figure 4 The illustration of the cover body is omitted in . in addition, image 3 as well as Figure 4 In FIG. 3 , an X-axis, a Y-axis, and a Z-axis are shown as three mutually orthogonal axes, and the Z-axis is an axis indicating the thickness direction in which the substrate and the element portion overlap.

[0130] The functional element 1 a according to the second embodiment is different from the functional element 1 described in the first embodiment in that the stopper portion 60 is extended toward the movable portion 33 .

[0131] The other configurations and the like are substantially the same as t...

no. 3 approach

[0153] use Figure 5 Functional elements related to the third embodiment will be described.

[0154] Figure 5 It is a schematic plan view showing functional elements according to the third embodiment. Figure 5 For the convenience of description, the illustration of the cover is omitted. In addition, an X axis, a Y axis, and a Z axis are shown as three mutually orthogonal axes, and the Z axis is an axis indicating the thickness direction in which the substrate and the element portion overlap.

[0155] The functional element 1b according to the third embodiment is different from the functional element 1 described in the first embodiment in that the fixing portions 131, 132 and the stopper portion 160 are integrally provided.

[0156] The other structures and the like are substantially the same as those of the functional element 1 described in the first embodiment, so the same reference numerals and numbers are attached to the same structures and part of the description is o...

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PUM

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Abstract

A functional device includes a movable member that can be displaced along a first axis, a movable electrode part extended from the movable member, a fixed electrode part provided to be opposed to the movable electrode part, and a stopper part that regulates displacement of the movable member. A projecting part projecting along the first axis is provided on the movable member, and a distance between an end of the projecting part and the stopper part is shorter than a distance between the movable electrode part and the fixed electrode part.

Description

technical field [0001] The present invention relates to functional elements, electronic equipment, and mobile bodies. Background technique [0002] Conventionally, as a functional element used as a functional element for detecting a physical quantity such as acceleration, a functional element having a structure having a fixed electrode, a movable body capable of displacement in a fixed direction, and an opposite electrode is known. The movable electrodes are arranged side by side with a gap between the fixed electrodes and provided on the movable body. [0003] In such a functional element, the gap between the fixed electrode and the movable electrode provided on the movable body will change along with the displacement of the movable body. The change of electrostatic capacitance generated between them can measure the change of physical quantity such as acceleration. [0004] For example, Patent Document 1 discloses a functional element having a structure in which a movable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P15/125G01D5/24
CPCG01P15/125G01P2015/0814
Inventor 田中悟
Owner SEIKO EPSON CORP