KR100264835B1 - A piezo-electric component that is easily controlling the frequecy - Google Patents

Abstract

PURPOSE: A piezoelectric resonant component is provided to finely control an oscillating frequency of a piezoelectric resonant device by subdividing a printing area of a solder resist layer for frequency adjustment printed toward a piezoelectric resonant device electrode. CONSTITUTION: A piezoelectric resonant component has a piezoelectric resonant devic(10) in which electrodes are printed at its both sides so that they can overlapped at its central portion. A solder resist layer(20) has a paste layer(20a) and a non-paste layer(20b). The paste layer(20a) and then-paste layer(20b) are horizontally printed on the electrodes of the piezoelectric resonant device(10) in order to adjust the piezoelectric resonant device(10). The width(d1) of the paste layer(20a) and the width(d2) of the non-paste layer(20b) are printed to satisfy the condition: d1 = 1/n x d2(n=1,2,3).

Description

Piezoelectric Resonance Part with Easy Frequency Adjustment {A PIEZO-ELECTRIC COMPONENT THAT IS EASILY CONTROLLING THE FREQUECY}

The present invention relates to a solder resist layer, which is a paste layer formed on an electrode of a piezoelectric resonator element so that the oscillation frequency characteristics of the piezoelectric resonator element using a piezoelectric effect can be finely adjusted. A frequency that allows fine adjustment of the oscillation frequency of the piezoelectric resonator element by subdividing the print width of the frequency regulating solder resistor layer printed on the electrode pattern formed to overlap the finer, thereby improving the fine operability of the piezoelectric resonator part. It relates to a piezoelectric resonator component that is easy to adjust.

In general, piezoelectric elements of piezoelectric resonant components are electronic components that perform the function of being used as an operation source of the reference signal of the microprocessor by using the piezoelectric effect of the device, that is, the mutual conversion function of electrical and mechanical energy. Used in electronic equipment such as communication equipment, television or audio, the demand thereof is rapidly increasing, and piezoelectric element electronic components using the piezoelectric element include the production of piezoelectric elements and the deposition and patterning of electrodes on the surface of the elements. The electrode forming process, the joining process of the terminal component to mount the device on the substrate, the molding process such as wax dotting and epoxy coating, and the finishing process of marking. The device and the terminal part are connected to each other as a coupling means such as soldering and molding to be used as a packaged electronic part. In particular, the piezoelectric element is mainly formed of a ceramic material, and therefore, a piezoelectric resonator part is usually called a ceramic resonator.

At this time, the oscillation frequency characteristic of the piezoelectric resonator element is determined according to the electrodes formed on the element, the oscillation frequency due to the vibration between the electrodes when the power supply of the piezoelectric component in the overlapping portion in the center of the electrode formed on both sides of the piezoelectric resonator element This is because the characteristics are determined and thus the oscillation operation is different depending on the formation of the electrode (i.e., the printing thickness or weight of the electrode). However, since the printing variable amount of the electrodes formed on both sides of the piezoelectric resonance element is limited. A separate solder resist layer for frequency adjustment is printed on the piezoelectric resonator element electrode to adjust the oscillation frequency characteristics of the piezoelectric resonator element, and is particularly used to lower the frequency of the manufactured piezoelectric resonator part to a low frequency.

The frequency of the solder resistor layer for the piezoelectric resonator element of the conventional piezoelectric resonator component related to such a technique, as shown in Figs. 1 and 2, the electrode on both sides of the piezoelectric resonator element 60 for the piezoelectric resonator component 50 61a and 61b are formed so as to overlap each other at the central portion of the element 60, and frequency-adjusted solder resistor layers 71a and 71b above the overlapped electrodes 61a and 61b of the piezoelectric resonator element 60, respectively. Are printed respectively.

Accordingly, the solder resistor layer for adjusting the frequency of the conventional piezoelectric resonator component is as shown in FIGS. 1 and 2, and the piezoelectric resonator element 60 is coupled to the terminal component 80 to form a substrate 90. When the power is applied to the power supply, the frequency is generated by vibration between the electrodes 61a and 61b, and this oscillation frequency is used for electronic products as a reference signal source, wherein the electrodes 61a and 61b are used. The frequency characteristics of the piezoelectric resonator element 60 are adjusted by adjusting the weight of the electrodes 61a and 61b while varying the printing amount of the solder resist layers 71a and 71b, which are the printed paste layers.

However, in the solder resistor layer for frequency adjustment of the conventional piezoelectric resonator component as described above, as shown in Figs. 1 and 2, the piezoelectric resonator element 60 is adapted to adjust the frequency characteristic after the piezoelectric resonator component 50 is manufactured. The solder resist layers 71 a and 71 b are printed on the electrodes 61 a and 61 b of the solder resist layers 71 a and 71 b. The solder resist layers 71 a and 71 b on the electrodes 61 a and 61 b are integrally printed. Although the oscillation frequency is operated at a low frequency due to the increase in the weight of the electrodes 61a and 6ab and the reduction of the vibrational operation, the printed solder resistor layers 71a and 71b are integrally printed on the electrodes 61a and 61b. As a result, a fine printing operation of the solder resistor layers 71a and 71b becomes difficult, and thus, a fine frequency adjustment operation of the piezoelectric resonator element 60 is impossible.

The present invention has been made in order to improve the conventional problems as described above is the object. By subdividing the printed area of the solder resistor layer for frequency adjustment printed on the piezoelectric resonator element electrode of the piezoelectric resonator element, the oscillation frequency of the piezoelectric resonator element can be finely adjusted, thereby improving the operability and product reliability of the piezoelectric resonator element. It is to provide a piezoelectric resonator component that is easy to adjust the frequency.

1 is a schematic perspective view showing a piezoelectric resonance device of a general piezoelectric resonance component

2 (a) and 2 (b) are a plan view and a schematic perspective view showing an electrode and a solder resistor layer printed on a piezoelectric resonator element of a conventional piezoelectric resonator component

3 is a schematic perspective view showing a piezoelectric resonator device of a piezoelectric resonator component according to the present invention;

4A, 4B, and 4C are a perspective view, a plan view, and a front view showing a resistor layer printed on a piezoelectric resonator element of a piezoelectric resonator component with easy frequency adjustment according to the present invention;

5 (a) and 5 (b) are schematic plan views for explaining the oscillation frequency according to the solder resistor layer printing of the piezoelectric resonator component of the present invention which is easy to adjust the frequency;

Figure 6 is a front view showing the checkerboard printing of the solder resistor of another embodiment of the present invention, the piezoelectric resonator component easy frequency adjustment

* Description of the symbols for the main parts of the drawings *

Piezoelectric Resonator Components

11a, 11b .... electrode 20 .... solder resist layer

20a ... paste layer 20b ... paste layer

The present invention as a technical means for achieving the above object, in the piezoelectric resonator component having a piezoelectric resonator element which is printed on both sides so that the electrode is overlapped at the center portion, the piezoelectric resonator on the electrode of the piezoelectric resonator element According to the present invention, there is provided a piezoelectric resonance component having an easy frequency adjustment, including a solder resist layer having a paste layer and a non-paste layer printed in a screen manner in the longitudinal direction of the piezoelectric resonance element to adjust the oscillation frequency of the element.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a schematic perspective view showing a piezoelectric resonator element of the piezoelectric resonator component according to the present invention, Figure 4 (a), (b) and (c) is a piezoelectric resonator of the piezoelectric resonator component easy frequency adjustment according to the present invention A perspective view, a plan view, and a front view of a resist layer printed on a resonant element, and FIGS. 5A and 5B illustrate an oscillation frequency according to the solder resistor layer printing of a piezoelectric resonator component of which the present invention can be easily adjusted. It is a schematic plan view for doing so.

On both sides of the piezoelectric resonator element 10 coupled to the terminal component 30 and mounted on the substrate 40, electrodes 11a and 11b are integrally formed from end to center, respectively, and the electrodes 11a and 11b are formed. ) Is printed so as to overlap at the central portion of the piezoelectric resonator element 10, when power is applied through the terminal component 30, vibration is generated between the electrodes 11a, 11b of the piezoelectric resonator element 10. A piezoelectric resonator part 1 having a piezoelectric resonator element 10 is provided.

In addition, a paste layer printed on the electrodes 11a and 11b of the piezoelectric resonator element 10 in the longitudinal direction of the piezoelectric resonator element 10 to adjust the oscillation frequency of the piezoelectric resonator element 10 in a screen manner. A solder resist layer 20 having 20a and a non-paste layer 20b is formed.

On the other hand, the width d1 of the paste layer 20a of the solder resist layer 20 and the width d2 of the non-paste layer 20b are d1 = 1 / nxd2 (n = 1,2,3. The piezoelectric resonance element frequency f1 when the solder resistor 20 having only the paste layer 20a is printed on the electrodes 11a and 11b of the piezoelectric resonance element 10. When the solder resist layer 20 having the paste layer 20a and the unpaste layer 20b is formed, the frequency f2 is f2 = 1 / n + 1 x f1 (n = 1, 2, 3). ..) Consists of the configuration satisfying the equation.

Referring to the operation of the present invention made of the above configuration as follows.

As shown in FIGS. 3 to 5, electrodes 11a and 11b are connected to the terminal component 30 and mounted on the substrate 40 so that electrodes 11a and 11b are connected to the piezoelectric resonator element 10. They are printed so that they overlap at the center of each. Therefore, when power is applied through the terminal component 30, resonance occurs between the electrodes 11a and 11b of the piezoelectric resonator element 10 to generate an oscillation frequency of the piezoelectric resonator element 10. Used as a source of signal generation for electronic products.

In this case, the piezoelectric resonator device 10 is mainly composed of a ceramic material, and the piezoelectric resonator device 1 in which the ceramic device 10 is coupled to the connection part 30 is called a ceramic vibrator.

In addition, the oscillation frequency of the piezoelectric resonator element 10 is characterized as the weight (thickness) of the electrodes 11a and 11b formed on both sides thereof, which is caused by the vibration generated between the electrodes 11a and 11b. This is because it varies depending on the print amount of 11a) 11b.

Accordingly, after the piezoelectric resonator component 1 is manufactured, in order to lower the oscillation frequency, the oscillation frequency of the piezoelectric resonator element 10 is adjusted on the electrodes 11a and 11b printed on the piezoelectric resonator element 10. The solder resist layer 20 is printed (to adjust the weight of the electrode pattern).

At this time, the paste layer 20a and the unpaste layer 20b in the longitudinal direction of the piezoelectric resonator element 10 in order to adjust the print amount without printing the solder resist layer 20 integrally (since the frequency adjustment can be made fine). The solder resist layer 20 having the printed circuit is uniformly printed on the electrodes 11a and 11b in a screen manner.

Meanwhile, the width d1 of the paste layer 20a of the solder resist 20 to be screen printed and the width d2 of the non-paste layer 20b include d1 = 1 / nx d2 (n = 1,2,3). ...) is printed to satisfy the expression. That is, when the paste layer 20a is printed, for example, with a width d1 of 1 mm, the width d2 of the unface layer 20b is formed to be 1 mm, 2 mm, and 3 mm, and the width of the paste layer 20a ( When d1) is printed at 2 mm, the width d2 of the non-paste layer 20b may be sequentially formed of 2 mm, 4 mm, 6 mm, or the like. At this time, the paste layer 20a and the unpaste layer 20b of the solder resist layer 20 are formed in parallel while crossing each other so that the solder resist layer 20 can be uniformly printed on the electrode 11. .

Accordingly, the piezoelectric resonance element frequency f1 and the paste layer 20a when the solder resistor 20 having only the paste layer 20a is printed on the electrodes 11a and 11b of the piezoelectric resonance element 10 are printed. And the frequency f2 when the solder resist 20 having the unpaste layer 20b is printed satisfies the expression f2 = 1 / n + 1 * f1 (n = 1,2,3 ...), That is, if d1 = d2, f2 = 1/2 f1, and if d1 = 2 d2, f2 = 1/3 f1.

That is, the frequency f2 of the piezoelectric resonator element 10 on which the solder resist layer 20 composed of the paste layer 20a and the unpaste layer 20b is printed is a solder resist layer having only the paste layer 20a ( 20 is more finely adjusted than the frequency f1 of the piezoelectric resonator element 10, and accordingly, the oscillation frequency of the piezoelectric resonator element 10 is adjusted very easily and accurately, such a piezoelectric resonator element 10 The product reliability of the piezoelectric resonator component 1 having) is further improved.

In addition, FIG. 6 shows another embodiment of the present invention. In another embodiment of the present invention, the paste layer 20a and the unpaste layer 20b of the solder resistor layer 20 are formed in a checkerboard shape. The paste layers 20a cross print with each other.

Accordingly, the frequency-adjustable solder resistor layer 20 of the piezoelectric resonator element 10 having the paste layer 20a and the unpaste layer 20b can be further divided and formed on the electrode 11. The frequency adjustment operation of 10) can be performed smoothly.

Thus, according to the piezoelectric resonance component of the present invention, the printing area of the frequency regulating solder resistor layer printed on the electrode side of the piezoelectric resonance element is subdivided so that the oscillation frequency of the piezoelectric resonance element can be finely adjusted. Of course, according to this there is an excellent effect that can improve the fine operability of the piezoelectric resonator component.

Claims (5)

In the piezoelectric resonator component (1) having piezoelectric resonator elements (10) printed on both sides thereof so that the electrodes (11a) (11b) are superimposed at the center portion, respectively. The paste layer 20a and the unface layer 20b are formed on the electrodes 11a and 11b of the piezoelectric resonator element 10 and are printed in the longitudinal direction to adjust the oscillation frequency of the piezoelectric resonator element 10. Easily adjustable frequency piezoelectric resonant component, characterized by having a solder resistor layer 20 The width d1 of the paste layer 20a of the solder resistor 20 and the width d2 of the unpaste layer 20b are d1 = 1 / nx d2 (n = 1,2). Easy to adjust the piezoelectric resonant parts, characterized by the formula 3. The piezoelectric resonance element frequency f1 according to claim 1 or 2, wherein the solder resist 20 having only the paste layer 20a is printed on the electrodes 11a and 11b of the piezoelectric resonance element 10. ) And the frequency f2 when the solder resist 20 having the paste layer 20a and the unpaste layer 20b are printed is f2 = 1 / n + 1 * f1 (n = 1,2,3. ..) Piezoelectric resonator parts with easy frequency adjustment characterized by satisfying the equation The piezoelectric resonance component as claimed in claim 1, wherein the piezoelectric resonance device (10) is made of a ceramic material. The piezoelectric resonator component of claim 1, wherein the solder resistor layer 20 includes a paste layer 20a and an unpaste layer 20b that are cross-printed in a checkerboard shape.

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