JPH1028024A - Electronic components and electronic devices using them - Google Patents

Abstract

(57) Abstract: The present invention relates to an electronic component having a vibrator and an electronic device using the same, and an object of the present invention is to reduce the size of the electronic component. SOLUTION: A substrate 1, a vibrator 3 mounted on one surface side of the substrate 1, a control element 5 mounted on the other surface side of the substrate 1, and a vibrator 3 penetrating the substrate 1 And a conductor electrically connected to the control element 5. The vibrator 3 is covered with a metal cover 18 on one surface side of the substrate 1, and a reinforcing projection 19 is provided on a top surface of the cover 18. Was provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electronic component having a vibrator and an electronic device using the same.

[0002]

2. Description of the Related Art In a conventional electronic component of this type, a vibrator and its control element are mounted on a substrate. To reduce the size of the vibrator, both sides of one side and the other side of the substrate are mounted. With the face.

That is, a substrate, a vibrator mounted on one surface of the substrate, a control element mounted on the other surface of the substrate, and a vibrator on the one surface which penetrates the substrate. A conductor electrically connected to the control element on the surface side,
On one side of the substrate, the vibrator was covered with a metal cover.

[0004]

The above-mentioned cover is mounted to prevent external noise from entering the vibrator or unnecessary radiation from the vibrator. However, in order to prevent the cover from being deformed to the vibrator side by an external force and coming into contact with the vibrator so as not to hinder the vibration, the top surface thereof must be sufficiently separated from the substrate. There is a problem that the height of the body increases and the size increases.

Accordingly, an object of the present invention is to reduce the size.

[0006]

According to the present invention, there is provided a cover provided with a reinforcing projection on a top surface thereof.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a substrate, a vibrator mounted on one side of the substrate, a control element mounted on the other side of the substrate, A conductor electrically connected to the vibrator on the one surface side and the control element on the other surface, and the vibrator is covered with a metal cover on the one surface side of the substrate; The top surface is an electronic component with a reinforcing projection, and the reinforcing projection on the top surface of the cover prevents the top surface from being significantly deformed in the direction of the vibrator by external force. The size can be reduced by approaching the vibrator.

According to a second aspect of the present invention, there is provided the electronic component according to the first aspect, wherein the projection is integrally formed in the longitudinal direction on the inner surface side of the cover, wherein the projection is provided on the inner surface side of the cover. Since the projections do not protrude out of the cover, the size can be further reduced.

According to a third aspect of the present invention, there is provided the electronic component according to the second aspect, wherein the protrusion is provided at an outer position of the vibrator, wherein the protrusion protruding into the cover contacts the vibrator. Is eliminated, and unnecessary electrostatic coupling between the protrusion protruding inward of the cover and the vibrator can be suppressed.

According to a fourth aspect of the present invention, there is provided the electronic component according to the first aspect, wherein the projection is integrally formed in a longitudinal direction on the outer surface side of the cover, wherein the projection does not project inward of the cover. The protrusion does not contact the vibrator.

According to a fifth aspect of the present invention, there is provided the electronic component according to the fourth aspect, wherein the protrusion is provided at an outer position of the vibrator. Contact with the vibrator is eliminated.

According to a sixth aspect of the present invention, there is provided the electronic component according to any one of the first to fifth aspects, wherein the plurality of protrusions are provided at positions symmetrical with respect to the electrodes of the vibrator. Therefore, it is possible to prevent the electrical characteristics of the vibrator due to the provision of the protrusion from being unbalanced on the left and right sides of the electrodes of the vibrator.

According to a seventh aspect of the present invention, there is provided the electronic component according to the first aspect, wherein the protrusion is formed by a column provided between the inner surface of the cover and the outer peripheral surface of the vibrating portion of the vibrator. Since the top surface of the cover is supported by the support columns, the top surface is not deformed in the direction of the vibrator due to external force, and the top surface can be made closer to the vibrator side to achieve miniaturization. Becomes

According to an eighth aspect of the present invention, the column is formed of a conductor, and the end of the column on the vibrator side is electrically connected to a ground electrode provided on the outer periphery of the vibrator. In the electronic component according to the seventh aspect, since the metal cover and the ground electrode are connected via the support, the ground of the ground electrode is strengthened.

According to a ninth aspect of the present invention, the support is formed of a metal body, and one end of the support is connected to the inner surface of the cover, and the other end of the support is connected to the ground electrode on the outer peripheral substrate portion of the vibrator. 9. The electronic component according to claim 8, wherein each of the electronic components is electrically and mechanically connected, and not only can the ground of the ground electrode be strengthened, but also the strength of the cover firmly supported by the pillars can be increased.

According to a tenth aspect of the present invention, the outer periphery of the vibrator is supported by a support, and the cover-side surface of the support is protruded toward the inner surface of the cover to form a projection for reinforcing the cover. The electronic component according to claim 1, wherein the projection is in contact with an inner surface of the cover, and the projection for reinforcing the cover is formed integrally with the support to facilitate manufacture.

Further, according to an eleventh aspect of the present invention, a concave portion is formed on the other surface side of the substrate, the control element is housed in the concave portion, and the control element is sealed by filling a resin in the concave portion. The electronic component according to any one of Items 1 to 10, wherein the control element can be protected from an external force.

According to a twelfth aspect of the present invention, a terminal portion is formed at the opening edge of the concave portion, and the resin is filled only to a position lower than the opening edge in the concave portion. 12. The electronic component according to claim 11, wherein the control element is shielded by the shield metal film.

According to a thirteenth aspect of the present invention, there is provided an electronic device in which the electronic component according to any one of the first to twelfth aspects is provided in a main body case and serves as a signal source. Since the size of the electronic device can be reduced, the size of the electronic device can be reduced.

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. 1 to 3, reference numeral 1 denotes a rectangular substrate made of ceramic, and supports 2 are integrally provided on the left and right sides of the upper surface of the substrate 1 in the longitudinal direction. On the support 2, a rectangular oscillator 3 made of quartz is mounted with its longitudinal direction aligned with the longitudinal direction of the substrate 1.

A recess 4 is formed on the lower surface of the substrate 1, and a control element 5 for compensating the temperature of the vibrator 3 is mounted in the recess 4.

The control element 5 and the conductive pattern 6 on the lower surface of the substrate 1 are electrically connected by bonding wires 7.

In this state, the resin 8 is filled in the recess 4 on the lower surface of the substrate 1 and the control element 5 is sealed by the resin 8.

The resin 8 is filled only to a position lower than the opening edge of the concave portion 4 as shown in FIGS. 2 and 3, and a shield metal film 9 is provided on the surface thereof. In this state, the position is lower than the opening edge of the recess 4.

The outer periphery of the concave portion 4 on the lower surface of the substrate 1 has a rectangular frame shape. As shown by broken lines in FIG. 1, the four corners are electrically connected to electrodes of a mounting substrate in a main body case such as a cellular phone. An external electrode 10 is provided.

These external electrodes 10 are connected to the conductive paths 1 shown in FIG.
1. Next, the conductive pattern 6 and the bonding wire 7 of FIG.
The control element 5 is electrically connected to the control element 5 through the bonding wire 7, the conductive pattern 6, the conductive path 12 and the conductive pattern 13 in FIG. It is electrically connected to the electrode 14.

A plurality of semicircular notches are provided in the outer peripheral portion of the lower surface of the substrate 1, and a control element 15 for writing data for temperature compensation of the vibrator 3 is provided in the control element 5 in this notch. Have been.

In the above configuration, a rectangular frame-shaped metal pattern 16 made of tungsten-nickel-gold is provided on the outer peripheral surface of the upper surface of the substrate 1, as shown in FIG. A body 17 is provided. On the upper surface of the substrate 1, a lower opening edge of a metal cover 18 covering the vibrator 3 is placed on the sealing body 17. A nickel-gold film is provided in the vicinity of the cover 18 in contact with the sealing body 17, and thus, integration by welding at about 400 ° C. is performed in this portion,
Thus, the shield of the vibrator 3 by the cover 18 is performed on the substrate 1.

Also, three projections 19 are integrally provided in the longitudinal direction of the lower surface of the cover 18 to reinforce the cover 18, thereby reducing the height of the cover 18 to reduce the thickness and the size. Can be achieved.

The three projections 19 are provided at positions symmetrical with respect to the central axis in the longitudinal direction of the vibrator 3 as shown in FIGS.

This is because the influence of the electrostatic change due to the cover 18 partially approaching the vibrator 3 due to the formation of the projection 19 becomes unbalanced on the left and right sides of the vibrator 3 and adversely affects the vibration characteristics. This is to prevent the situation.

FIG. 4 shows a second embodiment of the present invention.
3 to FIG. 3, one of the three projections 19 provided integrally on the lower surface of the cover 18 except one at the center.

That is, the central projection 1 facing the vibrator 3
Except for 9, the left and right two are provided outside the vibrator 3 so that the projection 19 does not come into contact with the vibrator 3 even when the cover 18 is slightly deformed downward by an external force.

FIG. 5 shows a third embodiment of the present invention, in which a projection 19 is integrally formed by pressing and deforming a cover 18 downward.

FIG. 6 shows a fourth embodiment of the present invention. In this example, the projections 19 are integrally formed on the upper surface side of the cover 18. In this manner, the projections 19 are provided on the upper surface side of the cover 18. Thus, the projection 19 does not contact the vibrator 3 when the cover 18 is slightly deformed.

FIG. 7 shows a fifth embodiment of the present invention. In this example, columns 19a are formed as projections on the inner surface of the cover 18 at portions corresponding to the left and right portions of both ends in the longitudinal direction of the vibrator 3.
Is fixed. In a normal state, the lower end of the column 19a is floating above the substrate 1 via a gap, and when the cover 18 is deformed downward by an external force, the column 19a comes into contact with the substrate 1 so that the cover 19 1
8 to prevent further downward deformation.

FIGS. 8 and 9 show a sixth embodiment of the present invention. In this example, a support 19a is formed of a conductive metal body, and a pressure contact material 19b such as gold or tin is provided at the lower end thereof. The pressing member 19b is electrically and mechanically connected to the ground electrode 20 on the substrate 1 on the outer periphery of the vibrator 3.

That is, in this embodiment, the deformation of the cover 18 by the column 19a and the strengthening of the grounding of the grounding electrode 20 are achieved.

FIGS. 10 and 11 show a seventh embodiment of the present invention. In this example, projections 2a are formed by projecting upward from two support tables 2 supporting the longitudinal direction of a vibrator 3, respectively. The projection 2a suppresses the downward deformation of the cover 18.

[0040]

As described above, the present invention provides a substrate, a vibrator mounted on one side of the substrate, a control element mounted on the other side of the substrate, A conductor electrically connected to the one-side vibrator and the other-side control element, and the vibrator is covered with a metal cover on one side of the substrate. An electronic component provided with reinforcing projections. The reinforcing projections on the top surface of the cover prevent the top surface from being significantly deformed in the direction of the vibrator due to external force. It is possible to reduce the size by approaching.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view of a first embodiment of the present invention.

FIG. 2 is a side sectional view of the same.

FIG. 3 is a front sectional view of the same.

FIG. 4 is a side sectional view of a second embodiment of the present invention.

FIG. 5 is a side sectional view of a cover according to a third embodiment of the present invention.

FIG. 6 is a side sectional view of a fourth embodiment of the present invention.

FIG. 7 is a side sectional view of a fifth embodiment of the present invention.

FIG. 8 is a side sectional view of a sixth embodiment of the present invention.

FIG. 9 is a side sectional view of the cover.

FIG. 10 is a front sectional view of a seventh embodiment of the present invention.

FIG. 11 is an enlarged perspective view of the main part.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 substrate 3 oscillator 4 recess 5 control element 8 resin 18 cover 19 protrusion

Claims (13)

[Claims] A substrate, a vibrator mounted on one surface of the substrate, and a control element mounted on another surface of the substrate.
A penetrating the substrate, comprising a conductor electrically connected to the oscillator on the one side and the control element on the other side, while covering the oscillator on one surface side of the substrate with a metal cover, An electronic component with a reinforcing projection on the top of this cover. 2. The electronic component according to claim 1, wherein a projection is integrally formed in a longitudinal direction on an inner surface side of the cover. 3. The electronic component according to claim 2, wherein the projection is provided at a position outside the vibrator. 4. The electronic component according to claim 1, wherein a projection is integrally formed in a longitudinal direction on an outer surface side of the cover. 5. The electronic component according to claim 4, wherein the projection is provided at a position outside the vibrator. 6. The electronic component according to claim 1, wherein the plurality of protrusions are provided at positions symmetrical with respect to the electrodes of the vibrator. 7. The projection formed by a support provided between an inner surface of the cover and an outer peripheral surface of a vibrating portion of the vibrator.
Electronic components according to the above. 8. The electronic component according to claim 7, wherein the support is formed of a conductor, and an end of the support on the vibrator side is electrically connected to a ground electrode provided on an outer peripheral portion of the vibrator. 9. A column is formed of a metal body, and one end of the column is electrically and mechanically connected to the inner surface of the cover, and the other end of the column is electrically and mechanically connected to a ground electrode on a substrate portion on the outer periphery of the vibrator. An electronic component according to claim 8. 10. An outer periphery of the vibrator is supported by a support base, and a cover-side surface of the support base is protruded toward an inner surface of the cover to form a projection for reinforcing the cover. The electronic component according to claim 1, wherein the electronic component is in contact with the electronic component. 11. A control device according to claim 1, wherein a concave portion is formed on the other surface side of the substrate, the control element is housed in the concave portion, and the control element is sealed by filling a resin in the concave portion. Electronic components according to the above. 12. The terminal according to claim 11, wherein a terminal portion is formed on an opening edge of the concave portion, and the resin is filled only to a position lower than the opening edge in the concave portion, and a shield metal film is formed on a surface of the resin. Electronic components. 13. An electronic device in which the electronic component according to claim 1 is provided in a main body case and used as a signal source.