JPH043611A - Piezoelectric oscillator - Google Patents

Abstract

PURPOSE:To improve the attachment workability and to reduce the thickness of this oscillator by connecting leads, which are extended from both electrodes transparently symmetrically on both faces of an oscillator, and conductive parts formed on both end faces of the oscillator and providing a supporting tool connected to leads. CONSTITUTION:This oscillator is provided with electrodes 12A and 12B transparently symmetrically formed on both faces 11A and 11B of an oscillator 11, leads 13A1, 13A11, 13A2, 13A21, 13B1, 13B11, 13B2, and 13B21 extended from electrodes 12A and 12B, conductive parts 14A1, 14A2, 14B1, and 14B2 which are formed on both end faces of the oscillator 11 and are connected to leads, and supporting tools 15 connected to leads 13A1, 13B11, 13A2, and 13B21. Supporting tools 15 and 15 are connected to attain the electric conduction between both electrodes 12A and 12B, and supporting tools 15 are used to fix the piezoelectric oscillator 11 with the small amount of conductive paste. Thus, the supporting tool attachment workability is improved to automatize the production, and the thickness of the oscillator is reduced.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is applicable to devices that require time division, such as microcomputers, character generators, frame memories, video equipment, digital audio equipment, digital communication equipment, etc. The present invention relates to a piezoelectric vibrator used to generate a fundamental frequency, and particularly to the shape of electrodes formed on the surface of the vibrator.

(Prior Art) FIG. 2 is a diagram illustrating a one-end supported strip type piezoelectric vibrator, in which (A) shows the front surface IA, and FIG. 2 (B) shows the back surface IB.

As shown in the figure, the configuration of the one-end supported strip type piezoelectric vibrator A, which supports the vibrator 1 at one end, is such that the rectangular pressure is applied to the conductive portion narrower than the width of the short sides 2a and 2b of the electrodes 2A and 2B. Connect certain leads (support connection parts) 3A and 3B to electrodes 2A and 2B.
The lead 3A on the front surface IA and the lead 3B on the back surface IB are formed and arranged so that they do not overlap transparently when viewed from their respective t-pole surfaces, and the leads 3A and 3B are arranged in a three-dimensional manner. There is a method of fitting and connecting the supports 4, 4 having a similar structure, and fixing the connecting portion with a conductive paste or the like (not shown).

(Problem to be Solved by the Invention) The support connecting portions 3A and 3B of the one-end support type strip-shaped piezoelectric vibrator A described above are located at one end in the long side direction of the piezoelectric vibrator 1 (second
In the figure, the piezoelectric vibrator 1 is biased toward the lower right side and the lower left side, respectively. Therefore, the piezoelectric vibrator 1 can be connected to the supports 4 only from below, and the pair of front and back Electrode 2A.

2B and the support connection parts 3A, 3B are not on the same plane, in order to obtain electrical continuity between the support connection parts 3A, 3B and the support 4.4, the tip as shown in FIG. A support 4.4 having a U-shaped three-dimensional structure was required.

Furthermore, since the support connecting portions 3A and 3B do not extend to one side 114Ala and lb in the long side direction of the transducer 1, a flat support 5°5 as shown in FIG. When connecting to the support connection parts 3A and 3B and applying conductive paste 6B to establish continuity, there are many cases! paste was required.

For the reasons mentioned above, the workability during installation between the support connection parts 3A, 3B and the supports 4.4 (5, 5) of the one-end supported strip type piezoelectric vibrator A is poor, and the thin shape of this piezoelectric vibrator A It was difficult to

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a piezoelectric vibrator having the following configuration.

picture electrodes formed on both sides of the vibrator so as to be transparently symmetrical; leads extending from the picture electrodes; conductive parts formed on both end faces of the vibrator and connected to the leads; A piezoelectric vibrator comprising a support connected to the lead.

(Embodiment) FIG. 1 is a diagram showing an embodiment of the piezoelectric vibrator according to the present invention, in which (A) shows the shape of the front surface 11A of the piezoelectric vibrator 11, and (B) shows the shape of the back surface 11B. It shows.

As shown in FIG. 3A, a electrode 13A1 extends downward from one electrode 12A formed on the surface 11A of the piezoelectric vibrator 11 constituting the one-end supported strip type piezoelectric vibrator B.
is a conductive portion 14 formed on the end surface 11a of the piezoelectric vibrator 11.
A1, and this conductive portion 14A1 is electrically connected to the back surface 1.
1B and is electrically connected to the terminal 13A1□.

Further, the lead 13A2 extending upward from the electrode 12A applies pressure to the conductive portion 14A formed at the end 11b of the vibrator 11.
2, and this conductive portion 14A2 is electrically connected to the back surface 11
It is electrically connected to a lead 13A21 formed on B.

As shown in the same figure (B), the back surface 11B of the piezoelectric vibrator 11
A lead 13B1 extending downward from the other electrode 12B formed above is electrically connected to a conductive portion 14B1 formed on the end surface 11a of the piezoelectric vibrator 11.
B1 is electrically connected to a lead 13B11 formed on the surface 11A.

Also, a lead 13 extending upward from the other electrode 12B
B2 is electrically connected to a conductive portion 14B2 formed on the end portion 11b of the piezoelectric vibrator 11, and this conductive portion 14B2 is electrically connected to a lead 13B21 formed on the surface 11A.

In this way, pressure is applied to the lead 13A1 and the lead 13B11 formed on the surface 11A of the vibrator 11 to the support 15.1.
5, the picture electrodes 12A, 1
2B can be obtained, and also by connecting supports 15, 15 formed on the surface 11A of the piezoelectric vibrator 11 to the lead 13A2 and the lead 13B21, the two can be connected to the pole 12A, 12B electrical continuity can be obtained.

Also, a support 15.15 is attached to the lead 13B formed on the back surface 11B of the piezoelectric vibrator 11 and the lead 13A11.
By connecting the picture electrodes 12A, 12
It is possible to obtain electrical continuity between the piezoelectric vibrator 1 and the piezoelectric vibrator 1.
Electrical continuity between the two @poles 12A and 12B can also be obtained by connecting the supports 15 and 15 to the leads 13B and 13A21 formed on the back surface 11B of the electrode 1, respectively.

The picture electrodes 12A and 12B described above are formed on the front surface 11A and back surface 11B of the piezoelectric vibrator 11, respectively, so as to be transparently symmetrical.

In this way, the piezoelectric vibrator 11 constituting the single-end supported rectangular pressure vibrator B uses a small amount of the support 15 having a planar structure such as the flat support 5 shown in FIG. Since it can be fixed with conductive paste, it is possible to reduce the thickness during assembly.

(Effects of the Invention) As described above, in the piezoelectric vibrator according to the present invention, restrictions on the direction in which the support is attached are eliminated, and both sides can be mounted on the same surface of the vibrator! Since electrical continuity between the four poles is obtained, workability for attaching the support is improved, production can be automated, and the vibrator can be made thinner.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of a piezoelectric vibrator according to the present invention,
FIG. 2 is a diagram illustrating a one-end supported type rectangular pressure @ vibrator, and FIG. 3 is a partially enlarged view showing a state in which a flat support is connected to the one-end supported type rectangular pressure 1f vibrator. 11...Piezoelectric vibrator, 11A...Surface, 11B...
・Back surface, 12A, 12B...electrode, 13A1, 13
A11. 13A2, 13A21゜13B, 13
B, 13B2 3B21... Lead, 14A, 14A, 14B, 14B2...
Conductive part, 15... support. Patent Applicant: Japan Victor Co., Ltd. Representative Umiki
Japanese CB)

Claims (1)

[Scope of Claims] Both electrodes formed on both sides of the vibrator so as to be transparently symmetrical, leads extending from these electrodes, and connected to the leads formed on both end faces of the vibrator. A piezoelectric vibrator, comprising: a conductive portion having a conductive portion formed on the lead; and a support member connected to the lead.