JPS5985120A - Thickness shear piezoelectric oscillator - Google Patents

Abstract

PURPOSE:To simplify the manufacture and assembling of a crystal oscillator by providing a substrate and a metallic plate by which the center of a major plane of a piezoelectric element is fixed contactlessly. CONSTITUTION:A lead-out pattern 9 is formed on the substrate 5 by printing, etc. The bonding layer 3 is formed on the substrate 5 so as to cross with the lead-out pattern 9. The bonding layer 4 is formed similarly to the outer circumference of the metallic plate 6. In this case, the crystal chip 2 is clipped by the substrate 5 and the metallic plate 6 under the atmosphere of nitrogen or the like corresponding to the bonding layers 3, 4. The curing of the bonding layers 3, 4 is accelerated by applying heat. By assembling the crystal oscillator 1 in this way, there allows simple manufacture with less number of components. Since the metallic plate 6 on the upper surface of the crystal oscillator 1 is used directly as the lead-out terminal, a voltage is applied easily to the crystal oscillator 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention (r!) is related to the 9-thickness-thickening mode and the insect camera.

Conventionally, an AT-cut crystal oscillator FD is an example of a thin pE'l oscillator, and the holding spring is fully welded to the two terminal pins of the 5-close terminal, and the holding spring is completely welded. The crystal piece was supported, the holding spring and the camp were covered without contacting the crystal piece, and the base and cap of the airtight terminal were restrained. This resulted in a large number of parts and a complex configuration. In addition, it had disadvantages 7 in that the yarn spinning process was complicated and the external shape became large. Furthermore (C crystal piece is 2
Because it is supported at a point, it is vulnerable to impact (there are some disadvantages as well).

The present invention eliminates the above-mentioned drawbacks, has a simple structure, has a small number of parts, and is easy to manufacture and assemble. - It provides a vibrator that is resistant to impact, has a small external shape, and has a thickness and sliding pressure of 1.

Below, embodiments of the present invention will be described in detail with reference to the following.

In Figs. 1 and 2, ``Y'' is a crystal fluorometer with a diameter of A1', which is an example of a thickness-type oscillator. Adhesion/@
3.4, a base plate 5 whose central part of the main surface is bonded to one main surface 28 of the crystal blank by an M layer 3 in a non-contact state, and an adhesive layer 4 to the other main surface 2b of the crystal blank. The center portion of the main surface is bonded to the metal plate 6 in a non-contact manner. The crystal piece 2 has a plano-convex shape, and the drive electrode 7 is mainly formed on the main surface 2a, and the drive electrode 8 is formed by vacuum deposition or the like. 7a, 8a are single-pole drawer frosts, each extending from the drive tt47.8 to the outer peripheral end of the crystal piece. The base plate 5 has a coefficient of thermal expansion close to that of the crystal blank 2, and is made of non-porous ceramic, glass, etc., and the lead pattern 9 intersecting with the adhesive layer 6 is formed by printing conductive paste.

The metal plate 6 is made of a metal material having a thermal expansion coefficient similar to that of the crystal piece 2, and in this example, an iron-nickel alloy containing 50% iron and 50% nickel is used. The metal plate 6 has a metal shape with a lead terminal 6b protruding from a circular plate portion 6a having the same outer shape as the crystal g2. The disk portion 6a is the main surface 2b of the crystal piece 2.
Four portions 6C facing the main surface 2b are formed to avoid contact with the main surface 2b. Note that the lead terminal 10b may be located entirely on the base plate, as in the case of the metal core 1G shown in Figure 7. The adhesive layers 6 and 4 are made by forming a conductive adhesive to a thickness of 200 μm by screen printing or the like. In addition, if a space Il° such as a glass bead with a diameter of about 200 μm is inserted into the conductive adhesive, the gap between the crystal piece 2 and the base 5 and the metal 6 will be small regardless of the dosing force I/C. and Z, it is possible.Glue M3 and 4 are formed on the awns with an anisotropic conductive adhesive layer 2). However, if it does not become conductive, the anisotropic conductive adhesive is an insulating external adhesive mixed with about 20 to 40% of silver powder, etc., and the thickness is adjusted to is a conduction sound, and in the width direction is an insulation force. In this case, the lead electrode 7a and the lead pattern 9 are opposed to each other, and the lead 11 is
There is a north side where i4 grapes are taken. When the adhesive layers 3 and 4 are formed with insulation 1 and external adhesive h (t-1, soldering and conduction paste), there is a conduction sound between the lead electrode 7a and the lead pattern 9, and the sound of conduction between the lead electrode 8a and the metal plate 6. It is necessary to detect the conduction sound.

The assembly of the water meter oscillator will now be described. First, a mark [1ill Z: V is drawn out from somewhere on the substrate 5, and the entire pattern 9 is formed. At the same time, an adhesive layer is formed on the substrate 5 so as to intersect with the lead pattern 9. Then, the adhesive layer 4 is similarly formed on the outer periphery of the metal plate 6. After this, people such as Yamoto will be able to deal with contact N layers 6 and 4 in the surrounding air)
The adhesive layer 5 and the metal plate 6 are used to sandwich the adhesive layer 5 and the metal plate 6.Heating the adhesive layer 6 and the metal plate 6 can speed up the curing of the adhesive layers 6 and 4. In this way, the part point V of the crystal vibration 9-piece is small ft.
<M) Since the handle is mI, manufacturing and assembly can be performed extremely easily. Also, the metal plate 6 on the top surface of the crystal unit
Since it can be easily used as a lead terminal, the application of N and EE to the crystal oscillator ↓ can be easily reduced.

In addition, a sealing material such as Wanx is placed around the first circumference of the crystal blank 2.5. The one installed so as to be in contact with the metal object 6 is
Goyu no Kiwa rFl: 'a% can be painted.

For example, if the entire oscillation circuit is constructed using gold, the crystal oscillator can be extremely miniaturized.

As mentioned above, according to the present invention, the number of parts is small, the structure consists of only joints, manufacturing and assembling are easy, and the entire piezoelectric vibrator with a 1% slip resistance and strong shock V can be captured.

It is possible to achieve a thinner and smaller size, and to provide a thinner piezoelectric device that can easily apply voltage.

[Brief explanation of drawings]

Fig. 1 is an IF plane view of an embodiment of the present invention, Fig. 2 is a sectional view of Fig. 1 +] -1] gauze, Fig. 3 is a front view of the substrate, and Fig. 4 is a front view of a crystal piece. , Figure 5 is a front view of the metal plate, and Figure 6 is a front view of the metal plate.
FIG. 1l-1 is a cross-sectional view taken along line 5--Vl, and a cross-sectional view of another embodiment of the middle and seventh member metal machine. Yu...Crystal unit 2...Crystal piece 3.
4... Adhesive layer 5... Substrate 6.10
...Kinjyo Oru 6b, IGb...Output terminal C...Concave part 10, Fig. 1 Fig. 3 6'C1 Fig. 2 Fig. 4 Fig. 10

Claims (1)

[Scope of Claims] (1) A piezoelectric element that performs full thickness shear imaging; The intermediate heating part of the surface is fixed in a non-contact state with the 1ζ base layer, and the other main surface of the element is covered with a ring-shaped contact layer corresponding to the outer peripheral edge of this main surface. A thickness slider box vibrator in which the medium heating part of the main surface is fixed to a metal rod in a non-contact state. (2. In claim 1, the piezoelectric element is A thickness-shear piezoelectric vibrator characterized by having a shape and a metal machine (() is a thickness-shear piezoelectric vibrator characterized by forming a concave portion opposite to a convex main surface. 1. A device for a thickness-sliding piezoelectric part, characterized in that the metal terminal has a lead-out terminal projecting from the top thereof.