JP2000349555A - Surface mount crystal oscillator - Google Patents
Surface mount crystal oscillatorInfo
- Publication number
- JP2000349555A JP2000349555A JP11158103A JP15810399A JP2000349555A JP 2000349555 A JP2000349555 A JP 2000349555A JP 11158103 A JP11158103 A JP 11158103A JP 15810399 A JP15810399 A JP 15810399A JP 2000349555 A JP2000349555 A JP 2000349555A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- crystal
- mounting substrate
- conductive adhesive
- substrate
- 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.)
- Granted
Links
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は表面実装水晶発振器
(面実装発振器とする)を産業上の技術分野とし、特に
表面実装用の水晶振動子と実装基板とを接合した面実装
発振器の接合方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface-mounted crystal oscillator (referred to as a surface-mounted oscillator) as an industrial technical field, and more particularly, to a method of bonding a surface-mounted crystal oscillator to a mounting substrate. About.
【0002】[0002]
【従来の技術】(発明の背景)面実装発振器は、例えば
温度補償型として携帯電話等の移動体通信機器に使用さ
れる。近年では、生産性の観点から、電子部品を収容し
た実装基板を水晶振動子の底面に接合した面実装発振器
がある(参照:特開平10−98151号公報)。2. Description of the Related Art A surface-mounted oscillator is used as a temperature-compensated oscillator in a mobile communication device such as a mobile phone. In recent years, from the viewpoint of productivity, there is a surface-mounted oscillator in which a mounting substrate containing electronic components is bonded to the bottom surface of a crystal unit (see Japanese Patent Application Laid-Open No. 10-98151).
【0003】(従来技術の一例)第5図及び第6図はこ
の種の一従来例を説明する面実装発振器の図である。第
5図は断面図、第6図は分解図である。面実装発振器
は、水晶振動子1と実装基板2とからなる。水晶振動子
1は、積層セラミックからなる容器本体3に水晶片4を
収容する。水晶片4は一端側を導電性接着剤11等によ
り電気的・機械的に接続して保持される。そして、例え
ばシーム溶接によりカバー5を封止してなる。なお、容
器本体3の枠上面には溶接用の金属リング6を有し、側
面及び底面には水晶片4の励振電極等と接続した端子電
極7(abcd)を有する。(Example of Prior Art) FIGS. 5 and 6 are diagrams of a surface mount oscillator for explaining a conventional example of this kind. FIG. 5 is a sectional view and FIG. 6 is an exploded view. The surface mount oscillator includes a crystal unit 1 and a mounting substrate 2. The crystal unit 1 accommodates a crystal piece 4 in a container body 3 made of a laminated ceramic. One end of the crystal blank 4 is electrically and mechanically connected and held by a conductive adhesive 11 or the like. The cover 5 is sealed by, for example, seam welding. The upper surface of the frame of the container body 3 has a metal ring 6 for welding, and the side and bottom surfaces have terminal electrodes 7 (abcd) connected to the excitation electrodes and the like of the crystal blank 4.
【0004】実装基板2は、凹部を有する積層セラミッ
クからなり、凹部内にICチップ8a及びコンデンサ8
b等の電子部品8を収容する。そして、枠上面に接続電
極9(abcd)を有し、底面及び側面に実装電極10
を有する。そして、水晶振動子1の底面と実装基板2の
開口面側を対向させ、水晶振動子1の端子電極7(ab
cd)と実装基板2の接続電極9(abcd)とを半田
12により接合する。The mounting substrate 2 is made of a laminated ceramic having a concave portion, and has an IC chip 8a and a capacitor 8 in the concave portion.
The electronic components 8 such as b. Then, the connection electrode 9 (abcd) is provided on the upper surface of the frame, and the mounting electrode 10 (abcd) is provided on the bottom and side surfaces.
Having. Then, the bottom surface of the crystal unit 1 and the opening surface side of the mounting substrate 2 face each other, and the terminal electrode 7 (ab
cd) and the connection electrode 9 (abcd) of the mounting board 2 are joined by solder 12.
【0005】このようなものでは、水晶振動子1と実装
基板2を並列的に製造でき、良品のみを選択して接合す
ればよいので、生産性を高めて完成品での不良率を軽減
できる。In such a device, the crystal unit 1 and the mounting substrate 2 can be manufactured in parallel, and only good products need to be selected and joined. Therefore, the productivity can be increased and the defective rate in the finished product can be reduced. .
【0006】[0006]
【発明が解決しようとする課題】(従来技術の問題点)
しかしながら、上記構成の面実装発振器では、実装基板
2の開口面を水晶振動子1の底面に対向させて接合す
る。すなわち、水晶振動子1の底面と枠上面とを、端子
電極7及び接合電極9の形成された四隅部で接合するの
で、接合面積が小さく接合強度が低下する問題があっ
た。[Problems to be Solved by the Invention]
However, in the surface mount oscillator having the above-described configuration, the surface of the mounting substrate 2 is bonded to the bottom surface of the crystal unit 1 so as to face the opening surface. That is, since the bottom surface of the crystal unit 1 and the top surface of the frame are joined at the four corners where the terminal electrodes 7 and the joining electrodes 9 are formed, there is a problem that the joining area is small and the joining strength is reduced.
【0007】また、平面外形が小さくなればなるほど、
端子電極7(abcd)同士及び接続電極9(abc
d)同士の間隙も小さくなり、半田12等の導電材では
電気的短絡を引き起し、小面積化(例えば携帯電話等で
の5×3.2mm未満)を阻害する問題もあった。Also, the smaller the planar outer shape, the more
The terminal electrodes 7 (abcd) and the connection electrodes 9 (abc
d) There is also a problem that the gap between them becomes small, and a conductive material such as the solder 12 causes an electric short circuit, which hinders a reduction in area (for example, less than 5 × 3.2 mm in a mobile phone or the like).
【0008】(発明の目的)本発明は、接合強度を高め
て小型化を確実に促進する面実装発振器を提供すること
を目的とする。(Object of the Invention) It is an object of the present invention to provide a surface mount oscillator which increases the bonding strength and reliably promotes miniaturization.
【0009】[0009]
【課題を解決するための手段】本発明は、水晶振動子と
実装基板とを異方性導電接着剤により接合したことを基
本的な解決手段とする。According to the present invention, a basic solution is to join a quartz oscillator and a mounting substrate with an anisotropic conductive adhesive.
【0010】[0010]
【作用】本発明は異方性導電接着剤を適用したので、水
晶振動子と実装基板の対向面全体を接合できる。以下、
本発明の実施例を説明する。According to the present invention, since the anisotropic conductive adhesive is applied, the entire opposing surfaces of the crystal unit and the mounting substrate can be joined. Less than,
An embodiment of the present invention will be described.
【0011】[0011]
【第1実施例】第1図は本発明の一実施例を説明する面
実装発振器の断面図である。なお、前従来例と同一部分
には同番号を付与してその説明は簡略又は省略する。面
実装発振器は、前述同様に、水晶片4を封入して側面及
び裏面に端子電極7(abcd)を有する水晶振動子1
と、電子部品8を収容して開口面となる枠上面に接続電
極9(abcd)を有する実装基板2とからなる。FIG. 1 is a cross-sectional view of a surface mount oscillator for explaining an embodiment of the present invention. The same parts as those in the prior art are assigned the same reference numerals, and the description thereof will be simplified or omitted. As described above, the surface-mounted oscillator includes a crystal resonator 1 in which a crystal piece 4 is sealed and terminal electrodes 7 (abcd) are provided on the side and back surfaces.
And the mounting substrate 2 having the connection electrodes 9 (abcd) on the upper surface of the frame which becomes the opening surface in which the electronic component 8 is accommodated.
【0012】そして、この実施例では、従来例の半田1
2に換えて、異方性導電接着剤13によって水晶振動子
1と実装基板2とを接合する。異方性導電接着剤13
は、接着剤13a中に粒径が均一な導電粒子13bを混
入してなる。そして、熱圧着によって、導電粒子13b
を列状に並べ、上下間の一方向のみを導通して両者間を
接合する。In this embodiment, the conventional solder 1 is used.
In place of 2, the crystal unit 1 and the mounting substrate 2 are joined by the anisotropic conductive adhesive 13. Anisotropic conductive adhesive 13
Is formed by mixing conductive particles 13b having a uniform particle size into the adhesive 13a. Then, the conductive particles 13b are formed by thermocompression bonding.
Are arranged in a row, and only one direction between the upper and lower sides is conducted to join the two.
【0013】この例での異方性導電接着剤13は、テー
プ状として実装基板2における開口面の枠上面に貼付す
る(第2図)。そして、水晶振動子1の底面と対向させ
て熱圧着により接合する。なお、テープは枠に合わせて
開口部を設けたが、開口を設ける作業性の点から面一で
もよい。The anisotropic conductive adhesive 13 in this example is affixed in the form of a tape to the upper surface of the opening of the mounting substrate 2 (FIG. 2). Then, they are bonded by thermocompression bonding so as to face the bottom surface of the crystal unit 1. Although the tape is provided with an opening in accordance with the frame, the tape may be flush with the workability of providing the opening.
【0014】このような構成であれば、枠上面の全面を
接合するので、水晶振動子1と実装基板2の接合強度を
高めることができる。そして、水晶振動子1の端子電極
7と実装基板2の接続電極9との電気的導通を確実にし
て、端子電極7(abcd)同士及び接続電極9(ab
cd)同士間の電気的短絡を防止する。したがって、小
型化(小面積化)を確実に促進する。With such a configuration, since the entire upper surface of the frame is bonded, the bonding strength between the crystal unit 1 and the mounting substrate 2 can be increased. Then, electrical continuity between the terminal electrode 7 of the crystal unit 1 and the connection electrode 9 of the mounting substrate 2 is ensured, and the terminal electrodes 7 (abcd) and the connection electrode 9 (ab
cd) prevent electrical short circuit between them. Therefore, miniaturization (small area) is surely promoted.
【0015】[0015]
【第2実施例】第3図は、本発明の第2実施例を説明す
る面実装発振器の断面図である。なお、前述と同一部分
の説明は省略する。第1実施例では水晶振動子1の底面
に実装基板2の開口面側を対向させたが、第2実施例で
は実装基板2の閉塞面側を対向させて接合したものであ
る。Second Embodiment FIG. 3 is a sectional view of a surface mount oscillator for explaining a second embodiment of the present invention. The description of the same parts as described above is omitted. In the first embodiment, the opening side of the mounting substrate 2 is opposed to the bottom surface of the crystal unit 1, but in the second embodiment, the closed surface side of the mounting substrate 2 is joined to face.
【0016】すなわち、第2実施例では、実装基板2に
おける閉塞面の4隅に接続電極9(abcd)を形成
し、開口面側における枠上面の4隅に実装電極10(a
bcd)を形成する。そして、閉塞面の全面にシート状
の異方性導電接着剤13を貼付し、水晶振動子1の底面
に実装基板2を熱圧着により接合する。That is, in the second embodiment, connection electrodes 9 (abcd) are formed at four corners of the closed surface of the mounting board 2 and mounting electrodes 10 (a) are formed at four corners of the upper surface of the frame on the opening side.
bcd). Then, a sheet-like anisotropic conductive adhesive 13 is attached to the entire closed surface, and the mounting substrate 2 is bonded to the bottom surface of the crystal unit 1 by thermocompression bonding.
【0017】このような構成であれば、実装基板2の閉
塞面を水晶振動子の底面に対向させて異方性導電接着剤
13により全面的に接合するので、接合強度をさらに高
めて、電気的接続を確実にする。With such a configuration, since the closed surface of the mounting substrate 2 faces the bottom surface of the crystal unit and is entirely bonded by the anisotropic conductive adhesive 13, the bonding strength is further increased, Secure connection.
【0018】[0018]
【他の事項】上記第1及び第2実施例では、実装基板2
はいずれも凹部を有して電子部品8を収容したが、例え
ば第4図に示したようにしてもよい。すなわち、水晶振
動子1の底面に電子部品8を固着して、実装基板2は枠
のみとして異方性導電接着剤13により接合してもよ
い。この場合、水晶振動子の特性を確認した後、電子部
品8を裏面に固着する。[Other matters] In the first and second embodiments, the mounting substrate 2
Each has a concave portion and accommodates the electronic component 8, but may be configured as shown in FIG. 4, for example. That is, the electronic component 8 may be fixed to the bottom surface of the crystal unit 1 and the mounting substrate 2 may be joined only by the anisotropic conductive adhesive 13 as a frame only. In this case, after confirming the characteristics of the crystal unit, the electronic component 8 is fixed to the back surface.
【0019】また、第2実施例では、実装基板2の全面
に異方性導電接着剤13を貼付したが、例えば異方性導
電接着剤13を枠状として実装基板2の外周に設け、中
央部には絶縁性の接着剤を設けてもよい(未図示)。ま
た、第1及び第2実施例において、端子電極7と接続電
極9との間のみに異方性導電接着剤13を設けて、その
他は絶縁性の接着剤としてもよい(未図示)。In the second embodiment, the anisotropic conductive adhesive 13 is adhered to the entire surface of the mounting substrate 2. However, for example, the anisotropic conductive adhesive 13 is provided on the outer periphery of the mounting substrate 2 in the form of a frame. The portion may be provided with an insulating adhesive (not shown). In the first and second embodiments, the anisotropic conductive adhesive 13 may be provided only between the terminal electrode 7 and the connection electrode 9, and the other may be an insulating adhesive (not shown).
【0020】また、異方性導電接着剤13はシート状と
したが、液状であってデイスペンサ等によって点的に塗
布してもよく、これらは任意に選定できる。また、水晶
振動子は凹状の容器本体3に水晶片を収容したが、容器
本体3は平板状であって凹状のカバーを樹脂封止やガラ
ス封止としてもよく、これらの形態は任意である。Although the anisotropic conductive adhesive 13 is in the form of a sheet, it may be in the form of a liquid and applied pointwise with a dispenser or the like, and these can be arbitrarily selected. Further, although the crystal resonator accommodates a crystal piece in the concave container body 3, the container body 3 is flat and the concave cover may be sealed with resin or glass, and these forms are arbitrary. .
【0021】また、端子電極7及び接続電極9はそれぞ
れ4電極としたが、2電極以上であれば適用できる。要
するに、本発明は、小型化に応答して、異方性導電接着
剤13を適用することにより、接合強度を高めて電気的
接続を確実にした面実装発振器を得ることが趣旨であ
る。このような趣旨に基づくものは適宜自在な変更を含
めて本発明の技術的範囲に属する。Although the terminal electrode 7 and the connection electrode 9 each have four electrodes, the invention is applicable as long as it has two or more electrodes. In short, the purpose of the present invention is to obtain a surface mount oscillator in which the bonding strength is increased and the electrical connection is ensured by applying the anisotropic conductive adhesive 13 in response to miniaturization. Those based on such a purpose belong to the technical scope of the present invention, including any appropriate changes.
【0022】[0022]
【発明の効果】本発明は、水晶振動子と実装基板とを異
方性導電接着剤により全面的に接合したので、両者の接
合強度を高めて電気的接続を確実にし、小型化を促進す
る面実装発振器を提供できる。According to the present invention, since the crystal unit and the mounting substrate are entirely bonded by the anisotropic conductive adhesive, the bonding strength between them is increased to ensure the electrical connection, and the miniaturization is promoted. A surface mount oscillator can be provided.
【図1】本発明の第1実施例を説明する面実装発振器の
断面図である。FIG. 1 is a cross-sectional view of a surface mount oscillator explaining a first embodiment of the present invention.
【図2】本発明の第1実施例を説明する面実装発振器の
一部分解図である。FIG. 2 is a partially exploded view of the surface-mounted oscillator illustrating the first embodiment of the present invention.
【図3】本発明の第2実施例を説明する面実装発振器の
断面図である。FIG. 3 is a cross-sectional view of a surface mount oscillator illustrating a second embodiment of the present invention.
【図4】本発明の他の実施例を説明する面実装発振器の
断面図である。FIG. 4 is a cross-sectional view of a surface mount oscillator illustrating another embodiment of the present invention.
【図5】従来例を説明する面実装発振器の断面図であ
る。FIG. 5 is a cross-sectional view of a surface mount oscillator illustrating a conventional example.
【図6】従来例を説明する面実装発振器の分解図であ
る。FIG. 6 is an exploded view of a surface mount oscillator illustrating a conventional example.
1 水晶振動子、2 実装基板、3 容器本体、4 水
晶片、5 カバー、6金属リング、7 端子電極、8
電子部品、9 接続電極、10 実装電極、11 導電
性接着剤、12 半田、13 異方性導電接着剤.DESCRIPTION OF SYMBOLS 1 Quartz crystal oscillator, 2 mounting board, 3 container main body, 4 crystal pieces, 5 covers, 6 metal rings, 7 terminal electrodes, 8
Electronic components, 9 connection electrodes, 10 mounting electrodes, 11 conductive adhesive, 12 solder, 13 anisotropic conductive adhesive.
Claims (1)
表面実装用の水晶振動子と、前記水晶振動子の裏面に接
合して枠内に電子部品を収容した実装基板とからなる表
面実装水晶発振器において、前記水晶振動子と実装基板
とを異方性導電接着剤によって接合したことを特徴とす
る表面実装水晶発振器。1. A front surface comprising a surface-mounted crystal oscillator having an electrode on the back surface in which a crystal piece is hermetically sealed, and a mounting substrate bonded to the back surface of the crystal oscillator and containing an electronic component in a frame. A surface-mounted crystal oscillator, wherein the crystal unit and a mounting substrate are joined by an anisotropic conductive adhesive.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15810399A JP3423255B2 (en) | 1999-06-04 | 1999-06-04 | Surface mount crystal oscillator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15810399A JP3423255B2 (en) | 1999-06-04 | 1999-06-04 | Surface mount crystal oscillator |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000349555A true JP2000349555A (en) | 2000-12-15 |
JP3423255B2 JP3423255B2 (en) | 2003-07-07 |
Family
ID=15664382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15810399A Expired - Fee Related JP3423255B2 (en) | 1999-06-04 | 1999-06-04 | Surface mount crystal oscillator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3423255B2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100439404B1 (en) * | 2001-12-27 | 2004-07-09 | 삼성전기주식회사 | Temperature compensated crystal oscillator and method for manufacturing the same |
JP2008035345A (en) * | 2006-07-31 | 2008-02-14 | Kyocera Kinseki Corp | Quartz oscillator and manufacturing method thereof |
JP2008187751A (en) * | 2008-05-07 | 2008-08-14 | Kyocera Corp | Surface mount piezoelectric oscillator |
JPWO2008152837A1 (en) * | 2007-06-12 | 2010-08-26 | 株式会社村田製作所 | Piezoelectric vibration parts |
JP2013219738A (en) * | 2012-01-23 | 2013-10-24 | Nippon Dempa Kogyo Co Ltd | Piezoelectric module |
JP2014216753A (en) * | 2013-04-24 | 2014-11-17 | 日本電波工業株式会社 | Bonded-type crystal oscillator |
JP2016195345A (en) * | 2015-04-01 | 2016-11-17 | 京セラクリスタルデバイス株式会社 | Piezoelectric device and method for manufacturing the same |
JP2017073827A (en) * | 2012-01-23 | 2017-04-13 | 日本電波工業株式会社 | Piezoelectric module |
JP2018093555A (en) * | 2018-03-26 | 2018-06-14 | 京セラ株式会社 | Crystal device and electronic equipment |
-
1999
- 1999-06-04 JP JP15810399A patent/JP3423255B2/en not_active Expired - Fee Related
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100439404B1 (en) * | 2001-12-27 | 2004-07-09 | 삼성전기주식회사 | Temperature compensated crystal oscillator and method for manufacturing the same |
JP2008035345A (en) * | 2006-07-31 | 2008-02-14 | Kyocera Kinseki Corp | Quartz oscillator and manufacturing method thereof |
JPWO2008152837A1 (en) * | 2007-06-12 | 2010-08-26 | 株式会社村田製作所 | Piezoelectric vibration parts |
JP2008187751A (en) * | 2008-05-07 | 2008-08-14 | Kyocera Corp | Surface mount piezoelectric oscillator |
JP2013219738A (en) * | 2012-01-23 | 2013-10-24 | Nippon Dempa Kogyo Co Ltd | Piezoelectric module |
JP2017073827A (en) * | 2012-01-23 | 2017-04-13 | 日本電波工業株式会社 | Piezoelectric module |
JP2014216753A (en) * | 2013-04-24 | 2014-11-17 | 日本電波工業株式会社 | Bonded-type crystal oscillator |
US9143114B2 (en) | 2013-04-24 | 2015-09-22 | Nihon Dempa Kogyo Co., Ltd. | Bonding type crystal controlled oscillator |
JP2016195345A (en) * | 2015-04-01 | 2016-11-17 | 京セラクリスタルデバイス株式会社 | Piezoelectric device and method for manufacturing the same |
JP2018093555A (en) * | 2018-03-26 | 2018-06-14 | 京セラ株式会社 | Crystal device and electronic equipment |
Also Published As
Publication number | Publication date |
---|---|
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