Electronic device, electronic apparatus, and vehicle

Patent metadata

Field	Value
Publication number	US-2017194935-A1
Application number	US-201515302325-A
Country	US
Kind code	A1
Filing date	Apr 9, 2015
Priority date	Apr 11, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

An electronic device includes: a container including first and second projections disposed on a bottom plate; and a vibration element having an end on a third surface side of the vibration element placed in a container via a connector so that the first and second projections, and a first surface face each other with a void therebetween, and the first and second projection portions partially overlap the first surface on a fourth surface side of the vibration element, and are aligned along the direction intersecting the longitudinal direction of the vibration element. In addition, a relationship of L1>L2>L3 is satisfied when an interval between ends in the intersecting direction is L1, an interval between the first and second projections is L2, and an interval between ends in the intersecting direction of an electrode film is L3.

First claim

1 . An electronic device comprising:
a container including a bottom plate, and a first projection portion and a second projection portion which are disposed on the bottom plate; and a vibration element which is accommodated in the container, wherein the vibration element includes a first surface, a second surface, and a side surface which connects the first surface and the second surface to each other, wherein the side surface includes a first side surface and a second side surface which are disposed to face each other, and a third side surface and a fourth side surface which are disposed to face each other and extend in the direction intersecting the first side surface and the second side surface, wherein the first surface has an electrode film, wherein the vibration element has the third side surface side placed on the first surface via the container and the connection member to make the first projection portion and the second projection portion, and the first surface face each other having a void therebetween, wherein the first projection portion and the second projection portion are disposed to partially the fourth side surface side of the first surface, and to be aligned along the direction in which the first side surface and the second side surface are aligned, in a plan view, and wherein a relationship of L1>L2>L3 is satisfied when an interval between an end portion of the first side surface and an end portion of a second side surface of the vibration element is L1, an interval between an end portion on the second projection portion side of the first projection portion and an end portion on the first projection portion side of the second projection portion is L2, and an interval between an end portion on the first side surface side and an end portion on the second side surface side of the electrode film is L3, in a plan view.

2 . The electronic device according to claim 1 ,
wherein the container includes a first side wall portion disposed in the direction along the first side surface, a second side wall portion disposed in the direction along the second side surface, and a third side wall portion disposed in the direction along the fourth side surface, in a plan view, wherein the first projection portion is projected in the direction of the third side surface from a region in which the first side wall portion and the third side wall portion come into contact with each other, and wherein the second projection portion is projected in the direction of the third side surface from a region in which the second side wall portion and the third side wall portion come into contact with each other.

3 . The electronic device according to claim 1 , further comprising:
another projection portion disposed on the bottom plate, wherein another projection portion partially overlaps the fourth side surface, and does not overlap the electrode film, in a plan view.

4 . The electronic device according to claim 1 ,
wherein the vibration element includes a first region having a first thickness along the vertical direction of the first surface, and a second region which is integrally provided in an outer circumference of the first region and has a second thickness which is thinner than that in the first region along the vertical direction, and wherein a relationship of L2>L4 and W1>W2 is satisfied when an interval between the end portion on the first side surface side and the end portion on the second side surface side of the first region is L4, an interval between the end portion of the fourth side surface and the end portion on the fourth side surface side of the first region is W1, and a longer interval among the interval between the end portion of the fourth side surface and the end portion on the third side surface side of the first projection portion, and the interval between the end portion of the fourth side surface and the end portion on the third side surface side of the second projection portion is W2.

5 . The electronic device according to claim 3 ,
wherein the vibration element includes a first region having a first thickness along the vertical direction of the first surface, and a second region which is integrally provided in an outer circumference of the first region and has a second thickness which is thinner than that in the first region along the vertical direction, and wherein a relationship of L2>L4 and W1>W2 is satisfied when an interval between the end portion on the first side surface side and the end portion on the second side surface side of the first region is L4, an interval between the end portion of the fourth side surface and the end portion on the fourth side surface side of the first region is W1, and a longer interval among the interval between the end portion of the fourth side surface and the end portion on the third side surface side of the first projection portion, and the interval between the end portion of the fourth side surface and the end portion on the third side surface side of the second projection portion is W2.

6 . The electronic device according to claim 1 ,
wherein an electronic component is disposed in the container.

7 . The electronic device according to claim 3 ,
wherein an electronic component is disposed in the container.

8 . The electronic device according to claim 4 ,
wherein an electronic component is disposed in the container.

9 . An electronic device comprising:
a container including a bottom plate, and a loading portion and a projection portion which are disposed on the bottom plate; and a vibration element which is accommodated in the container, wherein the vibration element includes a first surface, a second surface, and a side surface which connects the first surface and the second surface to each other, wherein the side surface includes a first side surface and a second side surface which are disposed to face each other, and a third side surface and a fourth side surface which are disposed to face each other and extend in the direction intersecting the first side surface and the second side surface, wherein the vibration element has the third side surface side placed on the loading portion via a connection member to make the projection portion and the first surface face each other having a void therebetween, wherein at least a part of the projection portion is disposed to overlap the first surface on the fourth side surface side, in a plan view, and wherein a first virtual surface which extends on a surface on which the connection member of the loading portion is disposed, and a second virtual surface which extends on a surface of the projection portion which faces the vibration element, intersect each other by an angle which is greater than 90 degrees and smaller than 180 degrees.

10 . An electronic apparatus comprising:
the electronic device according to claim 1 .

11 . A vehicle comprising:
the electronic device according to claim 1 .

Assignees

• Seiko Epson Corp

Inventors

• Chiba Seiichi

Classifications

• H10W72/884

  Die-attach connectors and bond wires · CPC title

• H03H9/19

  consisting of quartz · CPC title

• H03H9/0547 Primary

  consisting of a vertical arrangement (H03H9/0566 takes precedence) · CPC title

• H03H9/1021

  the BAW device being of the cantilever type · CPC title

• H03B28/00

  Generation of oscillations by methods not covered by groups H03B5/00 - H03B27/00, including modification of the waveform to produce sinusoidal oscillations (analogue function generators for performing computing operations G06G7/26; use of transformers for conversion of waveform in AC-AC converters H02M5/18) · CPC title