KR950010128Y1 - Piezo electric device - Google Patents
Piezo electric device Download PDFInfo
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- KR950010128Y1 KR950010128Y1 KR2019900007517U KR900007517U KR950010128Y1 KR 950010128 Y1 KR950010128 Y1 KR 950010128Y1 KR 2019900007517 U KR2019900007517 U KR 2019900007517U KR 900007517 U KR900007517 U KR 900007517U KR 950010128 Y1 KR950010128 Y1 KR 950010128Y1
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- piezoelectric plate
- plate
- piezoelectric resonator
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/87—Electrodes or interconnections, e.g. leads or terminals
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/88—Mounts; Supports; Enclosures; Casings
Abstract
내용 없음.No content.
Description
제1도는 종래 원형 압전기판과 전극의 정면도.1 is a front view of a conventional circular piezoelectric plate and electrodes.
제2도는 제1도에 도시된 압전기판과 전극의 저면도.FIG. 2 is a bottom view of the piezoelectric plate and the electrode shown in FIG.
제3도는 제1도에 도시된 압전기판과 전극의 A-A선 단면도.3 is a cross-sectional view taken along the line A-A of the piezoelectric plate and electrode shown in FIG.
제4도는 종래 정방형 압전기판과 전극의 정면도.4 is a front view of a conventional square piezoelectric plate and electrodes.
제5도는 제4도에 도시된 압전기판과 전극의 저면도.FIG. 5 is a bottom view of the piezoelectric plate and the electrode shown in FIG.
제6도는 제4도에 도시된 압전기판과 전극의 B-B선 단면도.6 is a cross-sectional view taken along line B-B of the piezoelectric plate and electrode shown in FIG.
제7도는 본 고안에 따른 정삼각형 압전기판과 전극의 정면도.7 is a front view of an equilateral triangle piezoelectric plate and an electrode according to the present invention.
제8도는 제7도에 도시된 압전기판과 전극의 저면도.FIG. 8 is a bottom view of the piezoelectric plate and the electrode shown in FIG.
제9도는 제7도에 도시된 압전기판과 전극의 C-C선 단면도.9 is a cross-sectional view taken along line C-C of the piezoelectric plate and electrode shown in FIG.
제10도는 본 고안의 제2실시예로서 압전공진소자의 정면도.10 is a front view of a piezoelectric resonator device as a second embodiment of the present invention.
제11도는 제10도에 도시된 압전공진소자의 저면도.FIG. 11 is a bottom view of the piezoelectric resonator device shown in FIG.
제12도는 제10도에 도시된 압전공진소자의 단면도이다.FIG. 12 is a sectional view of the piezoelectric resonator device shown in FIG.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1,11,16 : 갭 2,12,17 : 출력전극1,11,16 gap 2,12,17 output electrode
3,6,13,18 : 입력전극 4,7,14,19 : 접지전극3,6,13,18: input electrode 4,7,14,19: ground electrode
5,8,15,20 : 압전기판5,8,15,20: Piezoelectric Plate
본 고안은 압전공진소자에 관한 것으로서 특히, 압전기판의 형상과 전극의 형상이 정삼각형으로 형성되어 압전소자 크기가 축소될 수 있도록 된 압전공진소자에 관한 것이다.The present invention relates to a piezoelectric resonator device, and more particularly, to a piezoelectric resonator device in which the shape of the piezoelectric plate and the shape of the electrode are formed in an equilateral triangle so that the size of the piezoelectric device can be reduced.
종래 AM 라디오용 세라믹필터에 사용되어지던 압전공진소자는 전극의 형상과 압전기판의 형상이 원형으로 이루어졌었고, 상기 전극의 형상과 압전기판의 형상이 정방향으로 이루어진 경우도 있었다.The piezoelectric resonator element used in the AM filter of the prior art has a circular shape of an electrode and a piezoelectric plate, and the shape of the electrode and the piezoelectric plate may be in a positive direction.
전극과 압전기판의 형상이 원형으로 이루어진 경우에는 제1도 내지 제3도에 도시된 바와같은 원형 압전공진소자로 이루어졌는 바, 이 원형 압전공진소자는 원형 압전기판(15)과 원형 출력전극(12), 원형 입력전극(13) 및 원형 접지전극(14)으로 구성된다.In the case where the electrode and the piezoelectric plate have a circular shape, the piezoelectric resonator device includes a circular piezoelectric resonator device as shown in FIGS. 1 to 3, and the circular piezoelectric resonator device includes a circular piezoelectric plate 15 and a circular output electrode ( 12), a circular input electrode 13 and a circular ground electrode 14.
상기 압전기판(15)의 일면에는 입력전극(13)과 출력전극(12)이 구성되며, 타면에는 접지전극(14)이 구성된다. 이 입력전극(13)과 출력전극(12) 사이에는 갭(11)이 형성되어서 상기 입력전극(13)과 출력전극(12)이 상호 절연되게 된다.One surface of the piezoelectric substrate 15 includes an input electrode 13 and an output electrode 12, and the other surface has a ground electrode 14. A gap 11 is formed between the input electrode 13 and the output electrode 12 to insulate the input electrode 13 and the output electrode 12 from each other.
이러한 원형 압전공진소자는 적용되는 라디오 회로의 중심주파수(fo)인 455㎑와 그 압전공진소자의 중심주파수를 일치시키기 위해 외부직경(D3)을 14[㎜]로 하여야 하므로 소형화를 요구하는 전자제품에 사용되기에 전체적인 크기가 큰 문제점이 있었다.Such circular piezoelectric resonant element requires an external diameter (D3) of 14 [mm] to match the center frequency of the applied radio circuit 455 ㎑ and the center frequency of the piezoelectric resonant element. There was a big problem with the overall size being used for.
한편, 제4도 내지 제6도에 도시된 종래의 또 다른 압전공진소자는 원형 압전공진소자와 같이 중심주파수(455㎑)를 일치시키기 위해 한변의 길이(D4)가 4-5[㎜]인 정방형 압전기판으로 이루어졌는바, 한변의 길이(D4)가 중심주파수(fo)를 결정하며, 다음식이 성립한다. fo = CD4(C : 상수). 또한, 이 정방형 압전기판(20)의 일면에는 정방형 출력전극(17)과 정방형 입력전극(18)이 구성되며, 이 압전기판(20)의 타면에는 정방형 접지전극(19)이 구성된다. 상기 출력전극(17)과 입력전극(18) 사이에는 갭(16)이 형성되는 바, 이러한 정방형 압전소자는 그 한변의 길이(D4)가 4-5[㎜]로 이루어지지만, 소형화를 요구하는 전자제품에 사용되기에는 전체적인 크기가 큰 문제점이 있었다.Meanwhile, another conventional piezoelectric resonator shown in FIGS. 4 to 6 has a length D4 of 4-5 [mm] to match the center frequency (455 kHz) like a circular piezoelectric resonator. It consists of a square piezoelectric plate, the length of one side (D4) determines the center frequency (fo), and the following equation is established. fo = CD4 (C: constant). In addition, a square output electrode 17 and a square input electrode 18 are formed on one surface of the square piezoelectric plate 20, and a square ground electrode 19 is formed on the other surface of the piezoelectric plate 20. A gap 16 is formed between the output electrode 17 and the input electrode 18. The square piezoelectric element has a length D4 of 4-5 [mm] on one side, but requires miniaturization. There was a big problem in the overall size to be used in electronic products.
이에 본 고안은 상기와 같은 필요성을 해결하기 위하여 고안된 것으로, 압전기판과 전극을 삼각형으로 형성시킴으로써, 압전공진소자의 크기가 작아지도록 된 압전공진소자를 제공함에 그 목적이 있다.Therefore, the present invention is designed to solve the necessity as described above, and has an object to provide a piezoelectric resonator device in which the size of the piezoelectric resonator device is reduced by forming a piezoelectric plate and an electrode in a triangle.
이하 예시된 도면에 의거 본 고안의 구성 및 작용효과를 상세히 설명한다.Hereinafter, the configuration and the effect of the present invention will be described in detail based on the illustrated drawings.
본 고안은 갭(1)과 출력전극(2), 입력전극(3), 접지전극(4) 및 압전기판(5)으로 구성되면서, 상기 출력전극(2)과 입력전극(3), 접지전극(4) 및 압전기판(5)이 삼각형으로 이루어진 압전공진소자이다.The present invention consists of a gap (1) and an output electrode (2), an input electrode (3), a ground electrode (4) and a piezoelectric plate (5), the output electrode (2) and the input electrode (3), ground electrode (4) and the piezoelectric plate 5 are piezoelectric resonator elements made of a triangle.
상기와 같이 이루어진 압전공진소자에 있어서, 상기 압전기판(5)은 세라믹이나 단결정 혹은 박막상태로 이루어지고 입력전극(4)과 출력전극(2) 및 압전기판(5)의 형상이 일예로 정삼각형으로 될 때, 한변의 길이(D1)가 압전소자의 중심주파수(fo)를 결정하며, 다음의 식이 성립한다. fo = CD1(C : 상수). 따라서 동일한 중심주파수에서 압전기판의 면적이 원형, 사각형인 종래의 압전소자보다 작아지고 따라서, 전극(2)(3)(4) 및 압전기판(5) 재료가 종래보다 덜 필요로 하게 된다.In the piezoelectric resonator device as described above, the piezoelectric plate 5 is made of ceramic, single crystal or thin film, and the shape of the input electrode 4, the output electrode 2, and the piezoelectric plate 5 is an equilateral triangle. When the length D1 of one side determines the center frequency fo of the piezoelectric element, the following equation is established. fo = CD1 (C: constant). Therefore, at the same center frequency, the area of the piezoelectric plate is smaller than that of the conventional piezoelectric elements, which are circular and rectangular, and therefore, the electrode 2, 3, 4 and piezoelectric plate 5 materials require less than before.
물론, 여기서 종래의 원형 압전공진소자와 정방형 압전공진소자 및 본 고안에 따른 정삼각형 압전공진소자 모두는 동일한 공진주파수, 예로서 455(㎑)를 가진다는 조건하에서 비교되는 것이다.Of course, the conventional circular piezoelectric resonator element, the square piezoelectric resonator element, and the equilateral triangle piezoelectric resonator element according to the present invention are compared under the condition that they have the same resonance frequency, for example, 455 (Hz).
그리고, 본 고안은 텔레비젼의 리모콘에 사용되는 압전공진소자(Resonator)에 적용되어질 수 있는 바, 제10도에는 본 고안의 제2실시예에 따른 압전공진소자가 도시되어 있다.In addition, the present invention can be applied to a piezoelectric resonator (Resonator) used in the remote control of the television, Figure 10 shows a piezoelectric resonator according to a second embodiment of the present invention.
이 압전공진소자는 입력전극(6)과 접지전극(7)을 통하여 압전기판(8)에 전원이 공급되게 되면, 이 압전기판(8)이 진동하게 되고, 이 압전기판(8)의 진동이 리모콘의 동작에 이용되도록 된 것이다.When the piezoelectric resonator element is supplied with power to the piezoelectric plate 8 through the input electrode 6 and the ground electrode 7, the piezoelectric plate 8 vibrates, and the vibration of the piezoelectric plate 8 is reduced. It is to be used for the operation of the remote control.
이와같이 입력전극(6)과 접지전극(7) 및 압전기판(8)으로 구성된 본 고안의 제2실시예로서의 압전공진소자는 상기 입력전극(6)과 접지전극(7) 및 압전기판(8)의 형상이 삼각형으로 이루어지게 되면, 상기 압전기판(8)의 폭(D2)이 종래의 원형이나 정방형의 입력전극과 출력전극 및 압전기판으로 이루어진 압전공진소자에 비해 작아져서 제품생산시 원가가 절감되게 된다.As described above, the piezoelectric resonator device according to the second embodiment of the present invention constituted by the input electrode 6, the ground electrode 7, and the piezoelectric plate 8 is formed of the input electrode 6, the ground electrode 7, and the piezoelectric plate 8. When the shape is made of a triangle, the width (D2) of the piezoelectric plate (8) is reduced compared to the piezoelectric resonator device consisting of a conventional circular or square input electrode and output electrode and the piezoelectric plate to reduce the cost of production do.
이와 같이 본 고안에 따른 압전진동소자는 넓이 진동을 이용하는 입력, 출력 분할전극형 압전공진소자에서 압전기판의 형상과 입력, 출력 및 접지 전극의 형상을 정삼각형으로 형성시킴으로써 압전소자를 소형화시키고, 결국 제품의 원가절감이 가능하게 되는 효과가 있다.As described above, the piezoelectric vibration device according to the present invention miniaturizes the piezoelectric device by forming the shape of the piezoelectric plate and the shape of the input, output, and ground electrodes in an equilateral triangle in the input and output split electrode type piezoelectric resonator devices using wide vibration. Cost reduction of the effect is possible.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019900007517U KR950010128Y1 (en) | 1990-05-30 | 1990-05-30 | Piezo electric device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019900007517U KR950010128Y1 (en) | 1990-05-30 | 1990-05-30 | Piezo electric device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR910021040U KR910021040U (en) | 1991-12-20 |
| KR950010128Y1 true KR950010128Y1 (en) | 1995-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019900007517U KR950010128Y1 (en) | 1990-05-30 | 1990-05-30 | Piezo electric device |
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| KR (1) | KR950010128Y1 (en) |
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1990
- 1990-05-30 KR KR2019900007517U patent/KR950010128Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR910021040U (en) | 1991-12-20 |
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