KR200234435Y1 - Surface Mount Piezoelectric Resonator Components with Capacitor - Google Patents

Abstract

The present invention relates to a surface mount piezoelectric resonator component with a built-in capacitor. The technical concept of the present invention is to connect the input and output terminals 11a and 11b and the ground terminal 12 to the upper side of the insulating substrate 10 printed on the bottom surface. The connected input and output terminals 11a 'and 11b' and the ground terminal 12 'are printed, respectively, and the piezoelectric plate 20 and the condenser element 30 are sequentially placed on the upper side thereof. 20) and the conductive adhesive 40 is integrally applied to both ends of the condenser element 30, and the upper cap 60 is installed on the insulating substrate 20 as the epoxy adhesive 50.

As a result, the manufacturing process of the surface mount piezoelectric resonator parts with built-in capacitors is more smoothly performed, thereby improving product productivity, reducing manufacturing costs by using capacitor elements, and reducing the thickness of the surface mount piezoelectric resonator parts. Simplification is possible.

Description

Surface Mount Piezoelectric Resonator Components with Capacitor

According to the present invention, a piezoelectric resonator with a built-in condenser that can be easily mounted on a board without the need for a separate terminal component by arranging and mounting a piezoelectric plate and a capacitor element using a piezoelectric effect on an insulated board together. In more detail, a piezoelectric plate having electrodes formed so that a terminal and a ground terminal are overlapped at both sides on a printed substrate, and a capacitor element are respectively installed as a conductive adhesive, and the piezoelectric plate and the capacitor element The upper cap is mounted on the insulating substrate to the outside as an epoxy adhesive.

As a result, the manufacturing process of the surface mount piezoelectric resonator with built-in capacitors is no longer necessary because the complicated process of printing the electrodes and the dielectric for the capacitor is realized. Product productivity is improved, and the manufacturing cost of the surface mount piezoelectric resonator parts is reduced by the use of a condenser element, while the piezoelectric and condenser elements are arranged on the upper surface of the insulating board to thin the product of the surface mount piezoelectric resonator parts. The present invention relates to a surface mount piezoelectric resonator component with a built-in condenser that can be further improved by using an insulating substrate and an upper cap made of PzT-based ceramics and further improving adhesion strength and reliability.

In general, a piezoelectric element is an electronic component that performs a function used as an operation source of a reference signal of a microprocessor by using the piezoelectric effect of the device, that is, the mutual conversion function of electric and mechanical energy, and is mainly used in mobile communication equipment, TV, or audio. The demand for electronic components such as the present invention is rapidly increasing, and the piezoelectric element electronic component using the piezoelectric element includes a manufacturing process of a piezoelectric element, an electrode forming process of depositing and patterning electrodes on the surface of the element, and The process of joining the terminal parts for mounting the device on the substrate, and finally, molding processes such as wax dotting and epoxy coating, and finishing such as marking.

In addition, miniaturization and simplification of electronic components is facilitated by using a piezoelectric resonator built-in capacitor which integrally packages and integrates a capacitor element and a piezoelectric element, which are essential components in a circuit configuration, and accordingly, the piezoelectric element and the capacitor element as described above are now available. The use of piezoelectric resonator parts with built-in capacitors that simultaneously couples is common.

On the other hand, the piezoelectric plate and the capacitor element are combined as a three-terminal terminal part, and the use of the surface mount piezoelectric resonator part with the capacitor mounted directly on the board without using a separate terminal part rather than the piezoelectric resonant part mounted on the board is sharp. It is increasing.

In the conventional surface mount type piezoelectric resonator component with a capacitor related to such a technique, as shown in FIGS. 1 and 2, the input and output terminals 111a and 111b and the ground terminal connected to the circuit pattern of the main board are shown. The ground terminal 112 'is printed on the center of the upper surface of the aluminum insulating substrate 110 having 112 printed on the bottom surface, and the condenser center terminal 113a is printed on the upper side thereof, and the upper side of the center terminal 113 is printed. A capacitor 114, which is a dielectric material, is printed, and at both ends of the capacitor 114, input and output terminals 111a 'and 111b' connected to both input and output terminals 111a and 111b of the insulating substrate 110, respectively. ) Is printed, and the input and output capacitor terminals 113b are formed at both sides of the capacitor 114, and the upper and lower surfaces of the input and output terminals 111a 'and 111b' are overlapped with the upper and lower electrodes. 116a and 116b are mounted on the printed contact substrate 117, and both ends of the piezoelectric substrate 117 are conductive. Complexing agent 118 is applied integrally, an epoxy adhesive 119 formed on the outer side with an insulating substrate 110 of the piezoelectric substrate 117 is coated with a configuration in which the integral takes place in the top cap 115 chakseol.

In the conventional surface mount piezoelectric resonator component with a built-in capacitor, as illustrated in FIGS. 1 and 2, the input and output terminals 111a 'and 111b' printed on the insulating substrate 110 and the capacitor ( When the piezoelectric plate 117 is electrically connected integrally via the 114, vibration occurs in the overlapping electrode portions 116a and 116b of the piezoelectric plate 117, and the capacitor 114 which is an essential component in the circuit configuration. By the built-in, the piezoelectric resonator component 100 is easily mounted on a substrate without using a separate terminal component.

However, in the conventional surface mount type piezoelectric resonator component with a built-in capacitor as described above, as shown in FIGS. 1 and 2, it is difficult to print the respective terminals 111 ′ and 112 ′ on the insulating substrate 110. On the other hand, due to the complexity of the firing process when printing the input and output terminals and the ground terminals 111, 112, 111 ′, 112 ′, and the like, the manufacturing time of the surface mount piezoelectric resonator with a capacitor is delayed, and Due to the complicated printing process for sphering the capacitor 114, the productivity of the surface mount piezoelectric resonator component with a built-in condenser is reduced.

The present invention has been devised to improve the above-mentioned conventional problems. The object of the present invention is a complicated process of printing an electrode and a dielectric for a capacitor so as to implement a capacitor during the manufacturing process of a surface mount piezoelectric resonator component having a built-in capacitor. Since the manufacturing process of the surface mount piezoelectric resonator parts with built-in capacitors is performed more smoothly, product productivity is improved, and the manufacturing cost of the surface mount piezoelectric resonator parts is reduced by the use of capacitor elements, while the piezoelectric plates and capacitors are reduced. By arranging devices on the upper surface of the insulating board, it is possible to thin and simplify the product of surface-mount piezoelectric resonator parts. Especially, by using an insulating board made of PzT series ceramics and an upper cap, a built-in capacitor that further improves the adhesion strength and reliability To provide a surface-mount piezoelectric resonator component.

1 is a perspective view showing a conventional surface mount piezoelectric resonator part with a built-in capacitor

2 is an overall configuration diagram showing a conventional surface mount piezoelectric resonator part with a built-in capacitor.

3 is an overall configuration diagram showing a surface mount piezoelectric resonator built-in capacitor according to the present invention

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

1 .... Surface Mount Piezoelectric Resonance Components 10 .... Insulation Board

11a, 11b, 11a ', 11b' .... I / O terminals 12,12 '.... Ground terminal

20 .... Piezoelectric Plates 21a, 21b ... Electrodes

30 .... Capacitor element 40 .... Conductive adhesive

50 .... Epoxy Adhesive 60 .... Top Cap

As a technical means for achieving the above object, the present invention, the piezoelectric substrate and the capacitor element is installed on the upper surface side of the aluminum insulation substrate printed on the bottom of the input and output terminals and the ground terminal connected to the circuit pattern of the main board A surface mount three-terminal piezoelectric resonator component comprising: an input, an output terminal, and a ground terminal printed on an upper surface of an insulating substrate so as to be connected to the bottom input, output terminal, and ground terminal of the insulating substrate; And a piezoelectric plate installed on the upper side of the input and output terminals and printed on the upper and lower surfaces thereof so that the electrodes overlap each other at the center portion. The both ends are connected between the input and output terminals and the ground terminal to one side of the piezoelectric plate. Condenser elements respectively installed so as to be connected; A conductive adhesive integrally coated and cured at both ends of the piezoelectric substrate and at both ends of the capacitor element; And an epoxy adhesive integrally coated on the upper surface of the insulating substrate to the outside of the piezoelectric substrate and the condenser element, and an upper cap integrally adhesively bonded to the epoxy adhesive. By providing.

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

3 is an overall configuration diagram showing a surface mount piezoelectric resonator component with a built-in capacitor according to the present invention, the present invention is the input and output terminals (11a ') (11b') and the ground terminal (12 ') and the piezoelectric plate (20) ), The condenser element 30, the conductive adhesive 40, the epoxy adhesive 50, and the upper cap 60.

In addition, the piezoelectric substrate 20 and the condenser 30 are connected to the upper side of the insulating substrate 10 on which the input and output terminals 11a and 11b and the ground terminal 12 connected to the circuit patterns of the main substrate are printed. A surface mount piezoelectric resonator component (1) having a built-in capacitor is provided. The insulating substrate 10 is formed of PZT-based ceramics.

In addition, the input and output terminals 11a 'and 11b' on the top and bottom surfaces of the insulating substrate 10 are connected to the bottom input and output terminals 11a and 11b and the ground terminal 12 of the insulating substrate 10, respectively. And the ground terminal 12 'are printed. The piezoelectric substrate 20 is installed above the input and output terminals 11a 'and 11b', and the electrodes 21a and 21b overlap the upper and lower surfaces of the piezoelectric substrate 20 at the center portion. Each one is printed.

In addition, a capacitor element 30 is installed between the input and output terminals 11a and 11b and the ground terminal 12 'on one side of the piezoelectric plate 20 so that both ends thereof are connected to each other. The piezoelectric substrate 20 and the condenser element 30 are firmly coupled to the input and output terminals 11a ', 11b' and the ground terminal 12 'at both ends of the terminal and the both ends of the capacitor element 30. The adhesive 40 is applied and cured integrally. The condenser element 30 is a stacked capacitor chip.

On the other hand, an epoxy adhesive 50 is integrally coated on the upper surface of the insulating substrate 10 to the outside of the piezoelectric substrate 20 and the condenser element 30, and the upper cap 60 is integrally formed on the epoxy adhesive 50. This is adhesively bonded. The upper cap 60 is made of a configuration formed of PZT-based ceramics.

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

As shown in FIG. 3, the capacitor is mounted directly on the substrate without using a separate terminal component, and the capacitor element 30 is directly mounted on the insulating substrate 10 to simplify the manufacturing and product thinning. The surface mount piezoelectric resonator part 1 with a capacitor | condenser which makes it easy is as follows.

The input and output terminals are provided on the upper surface of the insulating substrate 10 on which the input and output terminals 11a and 11b directly connected to the circuit pattern (not shown) of the main board and the central ground terminal 12 therebetween are printed. Input and output terminals 11a 'and 11b' and ground terminal 12 'which are connected to (11a) and 11b and ground terminal 12 are printed, respectively. At this time, the insulating substrate 10 is usually formed of aluminum, but because the cost is high, the present invention uses a PZT-based ceramic, wherein the PZT-based insulating substrate 10 is also improved in strength.

Meanwhile. The piezoelectric plate 20 is installed so as to be electrically connected to the input and output terminals 11a 'and 11b', and electrodes 21a and 21b overlap the upper and lower surfaces of the piezoelectric plate 20 at a central portion thereof. Each one is printed. Accordingly, power is applied through the input and output terminals 11a 'and 11b', and vibrations are generated at the overlapping electrode portions of the piezoelectric substrate 20.

In addition, when the condenser element 30 is installed to be electrically connected between the input and output terminals 11a 'and 11b' and the ground terminal 12 'to one side of the piezoelectric plate 20, the piezoelectric plate Both ends of the 20 and both ends of the condenser element 30, the piezoelectric plate 20 and the condenser element 30 are firmly coupled to the input and output terminals 11a ', 11b' and the ground terminal 12 '. The conductive adhesive 40 is applied and cured integrally. Therefore, the piezoelectric substrate 20 and the condenser element 30 are firmly connected. At this time, the condenser element 30 is usually a stacked capacitor chip.

In addition, an epoxy adhesive 50 is integrally applied to the upper surface of the insulating substrate 10 to the piezoelectric substrate 20 and the capacitor chip 30 so that the upper cap 60 is formed on the epoxy adhesive 50. The manufacture of the surface mount piezoelectric resonator part 1 with a built-in capacitor | condenser by adhesive bonding firmly is completed. At this time, the upper cap 60 is formed of PZT-based ceramic, thereby improving the strength and adhesion of the product.

Accordingly, the surface mount type with built-in capacitors is provided by directly installing the capacitor element 30, which is a low-cost multilayer capacitor chip, without the complicated printing process for implementing the capacitor on the insulating substrate 10, directly on the insulating substrate 10. At the time when the manufacturing process of the piezoelectric resonance component 1 becomes smoother, manufacturing cost is also reduced.

As described above, according to the present invention, the surface mount piezoelectric resonator component with a built-in capacitor eliminates the complicated process of printing the electrode and the dielectric for the capacitor so that the capacitor can be realized. This improves the productivity of the product, and reduces the manufacturing cost of the surface mount piezoelectric resonator parts by using the capacitor element, and installs the piezoelectric plate and the capacitor element on the upper surface of the insulating substrate. Thinning and simplification are possible, and in particular, by using an insulating substrate and an upper cap made of PzT series ceramics, there is an excellent effect of further improving the adhesion strength and reliability.

Claims (4)

The piezoelectric substrate 20 and the condenser on the upper side of the insulating substrate 10 on which the input and output terminals 11a and 11b and the ground terminal 12 connected to the circuit pattern 30a of the main substrate 30 are printed on the bottom surface. In the surface mount piezoelectric resonator component (1) having a capacitor (30) provided therein, Input and output terminals 11a 'and 11b' printed on the upper surface of the insulating substrate 10 to be connected to the bottom input and output terminals 11a and 11b and the ground terminal 12 of the insulating substrate 10, respectively. And a ground terminal 12 '; A piezoelectric plate 20 installed above the input and output terminals 11a 'and 11b', and printed on the upper and lower surfaces thereof so that the electrodes 21a and 21b overlap each other at the center portion; A condenser element 30 installed at one side of the piezoelectric substrate 20 so that both ends thereof are connected between the input and output terminals 11a 'and 11b' and the ground terminal 12 ', respectively; and, Both ends and the condenser element 30 of the piezoelectric plate 20 are electrically connected to the input and output terminals 11a 'and 11b' and the ground terminal 12 'with the piezoelectric plate 20 and the condenser element 30. Conductive adhesive 40 which is applied and cured integrally at both ends; An epoxy adhesive 50 integrally coated on the upper surface of the insulating substrate 10 to the outside of the piezoelectric substrate 20 and the capacitor chip 30; Capacitor built-in surface-mount piezoelectric resonator component, characterized in that it comprises a; The surface mount piezoelectric resonator part with a capacitor according to claim 1, wherein the insulating substrate 10 is made of PZT-based ceramic. The surface mount piezoelectric resonator part with a capacitor according to claim 1, wherein the upper cap 60 is made of PZT-based ceramic. The surface mount piezoelectric resonator component with built-in capacitor according to claim 1, wherein the capacitor device (30) is a stacked capacitor chip.