JPH0637581A - Crystal resonator - Google Patents
Crystal resonatorInfo
- Publication number
- JPH0637581A JPH0637581A JP21329192A JP21329192A JPH0637581A JP H0637581 A JPH0637581 A JP H0637581A JP 21329192 A JP21329192 A JP 21329192A JP 21329192 A JP21329192 A JP 21329192A JP H0637581 A JPH0637581 A JP H0637581A
- Authority
- JP
- Japan
- Prior art keywords
- bonding material
- color
- crystal
- crystal plate
- joining material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は通信機器あるいはコンピ
ューターのクロック源として用いられる水晶振動子、水
晶フィルタに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crystal oscillator and a crystal filter used as a clock source for communication equipment or computers.
【０００２】[0002]
【従来の技術】従来技術を図３とともに説明する。図３
はＡＴカットの丸形水晶板を用いた水晶振動子の正面図
である。ベース１は金属製のシェルに絶縁ガラスを介し
て２本のリード端子１１，１２を貫通させた構成であ
り、それぞれのリード端子の上部には金属製の板状でス
リットを有する支持体２１，２２が、その主面が対向し
た状態でスポット溶接されている。なお、支持体にはニ
ッケルメッキが施されている。水晶板３はＡＴカット水
晶板であり、その表裏面の中央部分には励振電極３１，
３２（一部図示せず）、並びにこれら励振電極から水晶
板の外周に延びた引出電極３１ａ，３２ａが真空蒸着法
等の薄膜形成手段にて設けられている。水晶板３は前記
支持体のスリット間に挿入され、導電性接合材４にて電
気的機械的に接合される。2. Description of the Related Art A conventional technique will be described with reference to FIG. Figure 3
FIG. 6 is a front view of a crystal unit using an AT-cut round crystal plate. The base 1 has a structure in which two lead terminals 11 and 12 are penetrated through a metal shell through an insulating glass, and a support 21 having a metal plate-like slit and an upper portion of each lead terminal, 22 is spot-welded with its main surfaces facing each other. The support is nickel-plated. The crystal plate 3 is an AT-cut crystal plate, and the excitation electrodes 31,
32 (partly not shown), and extraction electrodes 31a and 32a extending from these excitation electrodes to the outer periphery of the crystal plate are provided by thin film forming means such as vacuum deposition. The crystal plate 3 is inserted between the slits of the support and electrically and mechanically joined by the conductive joining material 4.
【０００３】[0003]
【発明が解決しようとする課題】導電性接合材は通常、
図４に示すようにエポキシ樹脂系の接着剤と溶剤と箔状
の銀とを混合したペースト状であり、この導電性接合材
の塗布は、最近の製造の自動化の流れで接合材塗布機に
より行われることが多くなってきている。具体的には、
図３に示すように塗布機のニードルＮを支持体間に搭載
された水晶板の横側面に近接させ、導電性接合材を吐出
しながらニードルＮを上方に移動させる。これにより導
電性接合材が塗布される。しかしながら、この塗布は塗
布機の接合材の吐出圧、位置ズレ等の原因で塗布量が少
なすぎたり、あるいは塗布されていない場合があった。
このため、図１に示すように、導電性接合材の硬化後、
接合材の塗布部分を光電センサＳにてセンシングし、接
合材の塗布状況を検出、選別している。ところが、銀を
含有している導電性接合材とニッケルメッキを施した支
持体の表面色がいずれも銀色であるというように両者の
表面色が類似している場合、仮に接合材が塗布されてい
ないあるいは過少の場合でも、光電センサは接合材が適
当量塗布されていると誤認識してしまうことがあった。
このことが、水晶振動子の電気的特性を悪化させたり、
信頼性を低下させる原因となっていた。The conductive bonding material is usually
As shown in FIG. 4, it is in the form of a paste in which an epoxy resin adhesive, a solvent, and a silver foil are mixed, and the conductive bonding material is applied by a bonding material application machine in a recent manufacturing automation process. It is becoming more frequent. In particular,
As shown in FIG. 3, the needle N of the applicator is brought close to the lateral side surface of the quartz plate mounted between the supports, and the needle N is moved upward while discharging the conductive bonding material. As a result, the conductive bonding material is applied. However, in this coating, the coating amount may be too small or may not be coated due to the discharge pressure of the bonding material of the coating machine, positional deviation, and the like.
Therefore, as shown in FIG. 1, after the conductive bonding material is cured,
The applied portion of the bonding material is sensed by the photoelectric sensor S to detect and sort the application status of the bonding material. However, if the surface color of the conductive bonding material containing silver and the surface color of the nickel-plated support are both silver, that is, the surface colors of the two are similar, then the bonding material has been applied. The photoelectric sensor sometimes erroneously recognized that the bonding material was applied in an appropriate amount even when there was no or too little.
This deteriorates the electrical characteristics of the crystal unit,
It was a cause of reducing reliability.
【０００４】本発明は上記問題点を解決するためになさ
れたもので、光電センサによる接合材の塗布状態を検出
するにあたり、誤認識の少ない水晶振動子の構成を提供
し、電気的特性の安定した信頼性の高い水晶振動子を提
供することを目的とするものである。The present invention has been made in order to solve the above problems, and provides a structure of a crystal unit which is less likely to be erroneously recognized when detecting a coating state of a bonding material by a photoelectric sensor, and stabilizes electrical characteristics. It is an object of the present invention to provide a highly reliable crystal unit.
【０００５】[0005]
【課題を解決するための手段】上記問題点を解決するた
めに、本発明による水晶振動子は、表裏面に励振電極が
形成され、これら励振電極から引出電極が形成された水
晶板と、この水晶板を支持する金属板からなる支持体
と、この支持体と前記引出電極とを電気的に接続する導
電性接合材とを少なくとも有する水晶振動子において、
前記支持体の表面色と導電性接合材の表面色との色種を
異ならせたことを特徴とする。この色の異なりの程度
は、光電センサの判別能力に応じて判別可能な程度の色
分けを行う必要がある。例えば、オムロン社製の光電セ
ンサ（形E3SA-VS5RC43A）を用いると、ＶCC＝１２Ｖの
電源に接続し、被測定物から５cmの距離でカラーマーク
検出能力を測定した場合、白色では１８mAの出力が得ら
れたのに対し、赤色、黄色は白色の９０％程度の出力が
得られるのに対して、茶色では４０％程度、黒色では１
０％強の出力しか得られない。この出力の差の大きいほ
ど光電センサの検出に誤動作がなくなる。上記例では白
色と黒色は確実に判別されることになるので、前記支持
体の表面色と導電性接合材の表面色とにそれぞれ当該色
を用いれば良いことになる。In order to solve the above-mentioned problems, a crystal resonator according to the present invention has a crystal plate having excitation electrodes formed on the front and back surfaces, and a extraction plate formed from these excitation electrodes; In a crystal resonator having at least a support made of a metal plate that supports a crystal plate, and a conductive bonding material that electrically connects the support and the extraction electrode,
The surface color of the support and the surface color of the conductive bonding material are different from each other. The degree of this color difference needs to be color-coded to such an extent that it can be discriminated according to the discrimination ability of the photoelectric sensor. For example, using an Omron photoelectric sensor (E3SA-VS5RC43A), when connected to a power source of VCC = 12V and measuring the color mark detection capability at a distance of 5 cm from the object to be measured, an output of 18 mA for white is output. On the other hand, about 90% of the output for red and yellow is obtained for white, while about 40% for brown and 1 for black.
Only 0% output is obtained. The larger the difference between the outputs, the less the malfunction of the detection of the photoelectric sensor. In the above example, white and black are surely discriminated from each other, so that it is sufficient to use the respective colors for the surface color of the support and the surface color of the conductive bonding material.
【０００６】[0006]
【作用】前記支持体の表面色と導電性接合材の表面色と
の色種を光電センサが判別できる程度異ならせたことに
より、自動機による導電性接合材の塗布状況を正確に検
出することができる。Function: By accurately differentiating the color of the surface color of the support and the surface color of the conductive bonding material to the extent that a photoelectric sensor can discriminate, the application state of the conductive bonding material by an automatic machine can be accurately detected. You can
【０００７】[0007]
【実施例】本発明について、図面を参照して説明する。
図１は本発明の実施例を示す正面図であり、図２は接合
材中に粒子状の銀を混合した状態を示す図である。な
お、基本構成は従来例と同じ構成であるので、同番号を
付して説明する。ベース１は金属製のシェルに絶縁ガラ
スを介して２本のリード端子１１，１２を貫通させた構
成であり、それぞれのリード端子の上部には金属製の板
状の支持体２１，２２が、その主面が対向した状態でス
ポット溶接されている。これら支持体には水晶板を挿入
するスリットが形成されている。なお、支持体にはニッ
ケルメッキが施され表面が銀色をしている。水晶板３は
丸形のＡＴカット水晶板であり、その表裏面の中央部分
には励振電極３１，３２（一部図示せず）が、そしてこ
れら励振電極から水晶板の外周に延びた引出電極３１
ａ，３２ａが、真空蒸着法等の薄膜形成手段にて設けら
れている。水晶板３は前記支持体のスリット間に挿入さ
れ、導電性接合材４にて電気的機械的に接合される。導
電性接合材は、図２に示すようにエポキシ樹脂系あるい
はポリイミド樹脂系の接着剤と溶剤と微粒子状の銀とを
混合したペースト状であり、硬化後はその表面色は茶色
系統の色になる。そして、図示していないが、金属性の
キャップで気密封止を行い水晶振動子の完成となる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a view showing a state in which particulate silver is mixed in a bonding material. Since the basic configuration is the same as that of the conventional example, the description will be given with the same numbers. The base 1 has a configuration in which two lead terminals 11 and 12 are made to penetrate through a metal shell through insulating glass, and metal plate-shaped support bodies 21 and 22 are provided above the respective lead terminals. Spot welding is performed with the main surfaces facing each other. Slits for inserting a crystal plate are formed in these supports. The support is nickel-plated and has a silver surface. The crystal plate 3 is a round AT-cut crystal plate, and excitation electrodes 31 and 32 (partly not shown) are formed in the central portions of the front and back surfaces of the crystal plate 3, and extraction electrodes extending from these excitation electrodes to the outer periphery of the crystal plate. 31
a and 32a are provided by a thin film forming means such as a vacuum vapor deposition method. The crystal plate 3 is inserted between the slits of the support and electrically and mechanically joined by the conductive joining material 4. As shown in FIG. 2, the conductive bonding material is in the form of a paste in which an epoxy resin-based or polyimide resin-based adhesive, a solvent, and fine silver particles are mixed, and the surface color thereof is a brownish color after curing. Become. Then, although not shown, a quartz cap is completed by hermetically sealing with a metallic cap.
【０００８】このように支持体２１，２２の表面色を銀
色、導電性接合材４の表面色を茶色としたことにより、
当該接続部分を光電センサで接合材の供給状況を検出す
る場合、両者の色が異なっているので、接合材の有無を
確実に判別できる。By thus setting the surface color of the supports 21 and 22 to be silver and the surface color of the conductive bonding material 4 to be brown,
When the connection portion is detected by the photoelectric sensor to determine the supply status of the bonding material, the colors of the two materials are different, so that the presence or absence of the bonding material can be reliably determined.
【０００９】導電性接合材を着色する方法は、上記実施
例の他に例えば接着剤自体に色付けを行う等種々ある
し、また支持体側の表面色を例えばクロメート処理によ
り黒色にする等種々考えられるが、導電性接合材あるい
は支持体の電導度を必要以上に低下させると外部回路に
も悪影響があるので、着色処理には比抵抗値に注意する
必要がある。また、上記実施例は水晶板を直立させる水
晶振動子の構成について言及しているが、類似構成の水
晶フィルタにも適用できるし、あるいは水晶板を水平に
搭載する構成の水晶振動子に適用してもよい。There are various methods for coloring the conductive bonding material, such as coloring the adhesive itself in addition to the above-mentioned embodiment, and for making the surface color of the support side black by, for example, chromate treatment. However, if the electric conductivity of the conductive bonding material or the support is lowered more than necessary, the external circuit is also adversely affected. Therefore, it is necessary to pay attention to the specific resistance value in the coloring treatment. Further, although the above-mentioned embodiment refers to the configuration of the crystal unit in which the crystal plate is erected, it can be applied to a crystal filter having a similar configuration, or applied to a crystal unit having a configuration in which the crystal plate is mounted horizontally. May be.
【００１０】[0010]
【発明の効果】前記支持体の表面色と導電性接合材の表
面色との色種を光電センサが判別できる程度異ならせた
ことにより、自動機による導電性接合材の塗布状況を正
確に検出することができる。よって、導電性接合材の塗
布量不足等による水晶振動子の電気的特性の悪化、経時
変化の悪化がなく、電気的特性の安定した水晶振動子を
提供できる。The surface color of the support and the surface color of the conductive bonding material are different to the extent that a photoelectric sensor can discriminate them, thereby accurately detecting the application status of the conductive bonding material by an automatic machine. can do. Therefore, it is possible to provide a crystal resonator having stable electric characteristics without deterioration of electrical characteristics of the crystal resonator and deterioration with time due to insufficient amount of the conductive bonding material applied.
【図１】本発明に関連する水晶振動子の構造並びに検査
状況を示す正面図。FIG. 1 is a front view showing the structure and inspection status of a crystal unit related to the present invention.
【図２】導電性接合材中の銀の形状を示す模式図。FIG. 2 is a schematic diagram showing the shape of silver in a conductive bonding material.
【図３】本発明に関連する水晶振動子の構造並びに製造
状況を示す正面図。FIG. 3 is a front view showing the structure and manufacturing state of a crystal unit related to the present invention.
【図４】導電性接合材中の銀の形状を示す模式図。FIG. 4 is a schematic diagram showing the shape of silver in a conductive bonding material.
１ ベース １１，１２ リード電極 ２１，２２ 支持体 ３ 水晶板 ４ 導電性接合材 1 Base 11,12 Lead electrodes 21,22 Support 3 Crystal plate 4 Conductive bonding material
Claims (1)
振電極から引出電極が形成された水晶板と、この水晶板
を支持する金属板からなる支持体と、この支持体と前記
引出電極とを電気的に接続する導電性接合材とを少なく
とも有する水晶振動子において、前記支持体の表面色と
導電性接合材の表面色との色種を異ならせたことを特徴
とする水晶振動子。1. A crystal plate having excitation electrodes formed on the front and back surfaces and extraction electrodes formed from these excitation electrodes, a support made of a metal plate for supporting the crystal plate, the support and the extraction electrode. A crystal resonator having at least a conductive bonding material for electrically connecting the above, wherein the color type of the surface color of the support is different from that of the conductive bonding material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21329192A JPH0637581A (en) | 1992-07-17 | 1992-07-17 | Crystal resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21329192A JPH0637581A (en) | 1992-07-17 | 1992-07-17 | Crystal resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0637581A true JPH0637581A (en) | 1994-02-10 |
Family
ID=16636690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21329192A Pending JPH0637581A (en) | 1992-07-17 | 1992-07-17 | Crystal resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0637581A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6318971B1 (en) | 1999-03-18 | 2001-11-20 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Variable displacement compressor |
| JP2008008822A (en) * | 2006-06-30 | 2008-01-17 | Kyocera Kinseki Corp | Piezoelectric vibrator for viscosity sensor |
-
1992
- 1992-07-17 JP JP21329192A patent/JPH0637581A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6318971B1 (en) | 1999-03-18 | 2001-11-20 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Variable displacement compressor |
| JP2008008822A (en) * | 2006-06-30 | 2008-01-17 | Kyocera Kinseki Corp | Piezoelectric vibrator for viscosity sensor |
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