JP2008032667A - Tool for substrate inspection, and electrode structure of it - Google Patents

Tool for substrate inspection, and electrode structure of it Download PDF

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JP2008032667A
JP2008032667A JP2006209473A JP2006209473A JP2008032667A JP 2008032667 A JP2008032667 A JP 2008032667A JP 2006209473 A JP2006209473 A JP 2006209473A JP 2006209473 A JP2006209473 A JP 2006209473A JP 2008032667 A JP2008032667 A JP 2008032667A
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contact
substrate inspection
core
substrate
electrode
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JP4838658B2 (en
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Minoru Kato
穣 加藤
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Nidec Read Corp
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Nidec Read Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrode structure stable in contact resistance even if the using frequency is increased. <P>SOLUTION: The tool for substrate inspection obtains electric conduction between a substrate inspection device body and a plurality of inspection points disposed in a wiring pattern of a substrate to be inspected in order to inspect the electric characteristic of the substrate to be inspected. The tool comprises a bar-like contact group including conductive contacts where both ends become conductible by electric contact and one end is pressure-connected to one of the plurality of substrate inspection points, a holding body for holding the contact group, and a connection electrode connected to the substrate inspection device body having a plurality of electrodes arranged facedly to other ends of respective contacts of the contact group. The electrode comprises a linear core having conductivity, and a conductive side section for covering the outer periphery of the core. The side section is made of material more excellent in abrasion resistance than that of the core. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、基板検査用治具及び基板検査用治具の電極部構造に関し、より詳しくは、使用回数が増加しても接触抵抗の安定した電極部構造を有する基板検査用治具及び基板検査用治具の電極部構造に関する。
尚、この発明は、プリント配線基板に限らず、例えば、フレキシブル基板、多層配線基板、液晶ディスプレイやプラズマディスプレイ用の電極板、及び半導体パッケージ用のパッケージ基板やフィルムキャリアなど種々の基板における電気的配線の検査に適用でき、この明細書では、それら種々の配線基板を総称して「基板」と称する。
The present invention relates to a substrate inspection jig and a substrate inspection jig electrode part structure, and more particularly, a substrate inspection jig and a substrate inspection having an electrode part structure with stable contact resistance even when the number of uses increases. The present invention relates to an electrode part structure of a jig.
The present invention is not limited to a printed wiring board, but includes, for example, electrical wiring on various substrates such as flexible substrates, multilayer wiring substrates, electrode plates for liquid crystal displays and plasma displays, and package substrates and film carriers for semiconductor packages. In this specification, these various wiring boards are collectively referred to as “substrates”.

従来、回路基板上に設けられる配線パターンは、その回路基板に搭載されるIC等の半導体や抵抗器などの電気・電子部品に電気信号を正確に伝達する必要があるため、電気・電子部品を実装する前のプリント配線基板、液晶やプラズマディスプレイに配線パターンが形成された回路配線基板、或いは、半導体ウェハ等の基板に形成された配線パターンに対して、検査対象となる配線パターンに設けられた検査点間の抵抗値を測定して、その良否が判定されていた。   Conventionally, a wiring pattern provided on a circuit board must accurately transmit an electric signal to an electric / electronic component such as a semiconductor or a resistor such as an IC mounted on the circuit board. A printed wiring board before mounting, a circuit wiring board on which a wiring pattern is formed on a liquid crystal display or a plasma display, or a wiring pattern formed on a substrate such as a semiconductor wafer is provided on a wiring pattern to be inspected The resistance value between the inspection points was measured, and the quality was judged.

このような判定検査には、配線パターンの断線及び短絡を検査する検査方法が実施されている。このような導通や短絡の検査では、検査対象となる配線パターンの2箇所に設けられる検査点に、夫々一つずつ測定端子を当接させ、その測定端子間に所定レベルの測定用電流を流し、その測定端子間の電圧値を測定し、この電圧値と予め定められた閾値を比較することにより良否の判定が行われていた。   In such determination inspection, an inspection method for inspecting disconnection and short circuit of the wiring pattern is performed. In such continuity and short-circuit inspection, measurement terminals are brought into contact with inspection points provided at two locations of the wiring pattern to be inspected, and a predetermined level of measurement current is passed between the measurement terminals. The voltage value between the measurement terminals is measured, and the pass / fail is determined by comparing this voltage value with a predetermined threshold value.

しかしながら、このような方法で使用される基板検査用治具では、配線パターンの2箇所の検査点それぞれに、一つずつ当接させた測定端子を測定用電流の供給と電圧の測定とに共用する場合には、測定端子と検査点との間の接触抵抗が測定電圧に影響を与え、抵抗値の測定精度が低下し、検査結果の信頼性が低下するという不都合があった。
特に、近年になって、回路基板上に設けられる配線パターンの微細化が進み、配線パターンの抵抗値が小さくなっており、上記の接触抵抗がこの測定値に及ぼす影響が大きな問題となっていた。
However, in the board inspection jig used in such a method, the measurement terminals brought into contact with each of the two inspection points of the wiring pattern are commonly used for supplying the measurement current and measuring the voltage. In this case, the contact resistance between the measurement terminal and the inspection point affects the measurement voltage, and the measurement accuracy of the resistance value is lowered and the reliability of the inspection result is lowered.
Particularly, in recent years, the miniaturization of the wiring pattern provided on the circuit board has progressed, and the resistance value of the wiring pattern has decreased, and the influence of the contact resistance on the measured value has been a big problem. .

例えば、特許文献1には、検査対象の電気的特性を検査するための基板検査用治具であって、接触ピン(接触子)とこの接触ピンと導電接触する電極部が、接触ピンが挿通する保持孔内に存在するように形成される技術が開示されている。   For example, Patent Document 1 discloses a substrate inspection jig for inspecting electrical characteristics of an inspection object, and a contact pin (contactor) and an electrode portion in conductive contact with the contact pin are inserted into the contact pin. A technique is disclosed that is formed to exist in the holding hole.

特開2003−222637号公報Japanese Patent Laid-Open No. 2003-222637

しかしながら、このような特許文献1に開示される電極部は、接触子と接触するたびにその接触表面が摩耗することになり、長期間使用すると摩耗のため安定した接触状態を維持できない問題を有していた。   However, the electrode part disclosed in Patent Document 1 wears the contact surface every time it comes into contact with the contact, and has a problem that a stable contact state cannot be maintained due to wear when used for a long period of time. It was.

本発明は、このような実情に鑑みてなされたもので、長期間使用した場合であっても良好な接触状態を維持することのできる電極部構造を提供する。   This invention is made | formed in view of such a situation, and provides the electrode part structure which can maintain a favorable contact state even when it is a case where it is used for a long period of time.

請求項1記載の発明は、被検査基板の電気的特性を検査するために、基板検査装置本体と該被検査基板の配線パターンに設けられる複数の検査点との間の電気的導通を得るための基板検査用治具であって、該基板検査治具は、両端に電気的な接触により導通可能となる端部を有する接触子であって、その一方の端部が複数の前記基板被検査点の一つに圧接される、それぞれ導電性を有する棒状の接触子、よりなる接触子群と、前記接触子群を保持する保持体と、前記接触子群のそれぞれの接触子の他方端部と対向して配置された複数の電極部を備える前記基板検査装置本体に接続される接続電極体とにより構成され、前記電極部は、導電性を有する線状の芯部と、該芯部の外周を覆う導電性の側部を有し、前記側部は、前記芯部よりも耐摩耗性に優れた素材により形成されていることを特徴とする基板検査用治具を提供する。
請求項2記載の発明は、前記側部が、前記芯部の硬度より高い硬度を有することを特徴とする請求項1記載の基板検査用治具を提供する。
請求項3記載の発明は、前記芯部が円柱に形成され、前記側部が円筒に形成され、前記芯部と前記側部が同心に配置されていることを特徴とする請求項1又は2に記載の基板検査用治具を提供する。
請求項4記載の発明は、前記芯部の端部表面が円形に形成され、前記側部の端部表面が該芯部と同心となる円形に形成され、前記側部の内径が前記接触子の外径よりも小さく形成されていることを特徴とする請求項1乃至3いずれかに記載の基板検査用治具を提供する。
請求項5記載の発明は、前記接触子の他方端部が、曲面状に形成されていることを特徴とする請求項1乃至4いずれかに記載の基板検査用治具を提供する。
請求項6記載の発明は、被検査基板の電気的特性を検査するために、基板検査装置本体と該被検査基板の配線パターンに設けられる複数の検査点との間の電気的導通を得るために用いられる複数の接触子と接触して電気的導通を可能にする基板検査用治具が有する電極部構造であって、前記電極部は、導電性を有する線状の芯部と、該芯部の外周を覆う導電性の側部を有し、前記側部は、前記芯部よりも耐摩耗性に優れた素材により形成されていることを特徴とする基板検査用治具の電極部構造を提供する。
これらの発明を提供することによって、上記課題を解決する。
According to the first aspect of the present invention, in order to inspect the electrical characteristics of the substrate to be inspected, to obtain electrical continuity between the substrate inspection apparatus main body and a plurality of inspection points provided in the wiring pattern of the substrate to be inspected. The substrate inspection jig is a contact having an end portion that can be electrically connected to both ends by electrical contact, and one end portion of the substrate inspection jig includes a plurality of the substrate inspection objects. A contact-shaped contact made of a conductive rod-shaped contact, which is in pressure contact with one of the points, a holding member for holding the contact, and the other end of each contact of the contact And a connecting electrode body connected to the substrate inspection apparatus main body including a plurality of electrode portions disposed opposite to each other, the electrode portion including a linear core portion having conductivity, and the core portion It has a conductive side that covers the outer periphery, and the side is more resistant to wear than the core. To provide a substrate inspection tool, characterized in that is formed by materials with excellent.
The invention according to claim 2 provides the substrate inspection jig according to claim 1, wherein the side portion has a hardness higher than the hardness of the core portion.
The invention according to claim 3 is characterized in that the core part is formed in a column, the side part is formed in a cylinder, and the core part and the side part are arranged concentrically. The board inspection jig described in 1. is provided.
According to a fourth aspect of the present invention, the end surface of the core portion is formed in a circular shape, the end surface of the side portion is formed in a circular shape concentric with the core portion, and the inner diameter of the side portion is the contactor. The substrate inspection jig according to claim 1, wherein the substrate inspection jig is formed smaller than the outer diameter of the substrate inspection jig.
According to a fifth aspect of the present invention, there is provided the substrate inspection jig according to any one of the first to fourth aspects, wherein the other end of the contact is formed in a curved surface shape.
According to a sixth aspect of the present invention, in order to inspect the electrical characteristics of the substrate to be inspected, to obtain electrical continuity between the substrate inspection apparatus main body and a plurality of inspection points provided in the wiring pattern of the substrate to be inspected. The electrode part structure of the substrate inspection jig that enables electrical conduction through contact with a plurality of contacts used in the electrode, wherein the electrode part includes a linear core part having conductivity and the core An electrode part structure for a substrate inspection jig having a conductive side part covering the outer periphery of the part, wherein the side part is formed of a material having higher wear resistance than the core part I will provide a.
By providing these inventions, the above problems are solved.

請求項1記載の発明によれば、基板検査治具が、両端に電気的導通を図る端部を有する接触子であって、その一方の端部が複数の前記基板被検査点の一つに圧接される、それぞれ導電性を有する棒状の接触子、よりなる接触子群と、前記接触子群を保持する保持体と、前記接触子群のそれぞれの接触子の他方端部と対向して配置された複数の電極部を備える前記基板検査装置本体に接続される接続電極体とにより構成され、電極部は導電性を有する線状の芯部と該芯部の外周を覆う導電性の側部からなり、側部が芯部よりも耐摩耗性の優れた素材により形成されているので、長期間使用した場合であっても、電極部と接触子の接触状態を良好な状態に維持することができる。
このため、基板検査用治具の電極構造を用いることにより、基板検査用治具の耐久性を向上させることができる。
請求項2記載の発明によれば、側部が芯部よりも硬度の高い素材により形成されているので、基板検査用治具の耐久性をさらに向上させることができる。
請求項3記載の発明によれば、芯部が円柱に形成され、側部が円筒に形成され、芯部と側部が同心に配置されているので、長時間使用経過後の接触子と電極部の接触を安定した接触状態とすることができる。
請求項4記載の発明によれば、側部の内径が前記接触子の外径よりも小さく形成されているので、更なる、長時間使用経過後の安定した接触状態の安定性を提供することができる。
請求項5記載の発明によれば、前記接触子の他方端部が、曲面に形成されているので、接触子が電極部の芯部と側部に同時に接触して、安定した接触状態を提供することができる。
請求項6記載の発明によれば、被検査基板の電気的特性を検査するために、基板検査装置本体と該被検査基板の配線パターンに設けられる複数の検査点との間の電気的導通を得るために用いられる複数の接触子と接触して電気的導通を可能にする基板検査用治具が有する電極部構造であって、電極部は導電性を有する線状の芯部と該芯部の外周を覆う導電性の側部からなり、側部が芯部よりも耐摩耗性の優れた素材により形成されているので、長期間使用した場合であっても、電極部と接触子の接触状態を良好な状態に維持することができる。
According to the first aspect of the present invention, the substrate inspection jig is a contact having end portions for electrical conduction at both ends, and one end portion thereof is one of the plurality of substrate inspection points. A bar-shaped contact that is in pressure contact with each other, a contact group comprising the contact group, a holding body that holds the contact group, and the other end of each contact of the contact group are arranged to face each other. A connecting electrode body connected to the main body of the substrate inspection apparatus having a plurality of electrode parts, and the electrode part is a conductive linear core part and a conductive side part covering the outer periphery of the core part Since the side part is made of a material that has better wear resistance than the core part, the contact state between the electrode part and the contactor should be kept in a good state even when used for a long time. Can do.
For this reason, the durability of the substrate inspection jig can be improved by using the electrode structure of the substrate inspection jig.
According to the invention described in claim 2, since the side portion is formed of the material having higher hardness than the core portion, the durability of the substrate inspection jig can be further improved.
According to the invention of claim 3, since the core part is formed in a column, the side part is formed in a cylinder, and the core part and the side part are arranged concentrically, the contactor and the electrode after a long period of use have passed. The contact of the part can be brought into a stable contact state.
According to invention of Claim 4, since the internal diameter of the side part is formed smaller than the outer diameter of the said contactor, providing the stability of the stable contact state after a long time use progress further. Can do.
According to the fifth aspect of the present invention, since the other end of the contactor is formed in a curved surface, the contactor simultaneously contacts the core part and the side part of the electrode part to provide a stable contact state. can do.
According to the invention described in claim 6, in order to inspect the electrical characteristics of the substrate to be inspected, electrical continuity between the substrate inspection apparatus main body and the plurality of inspection points provided in the wiring pattern of the substrate to be inspected is achieved. An electrode part structure of a substrate inspection jig that enables electrical conduction through contact with a plurality of contacts used for obtaining a linear core part having conductivity and the core part It consists of a conductive side that covers the outer periphery of the electrode, and the side is made of a material that is more resistant to wear than the core. The state can be maintained in a good state.

本発明を実施するための最良の形態を説明する。
図1は、本発明に係る基板検査用治具の構成の概略を示している。この図1では、複数の接触子2、これら接触子2を多針状に保持する保持体3、この保持体3を支持するとともに接触子2と接触して導通状態となる電極部41を有する接続電極体4、検出される電気信号を処理する検査信号処理部5、及び接触子2検査信号処理部5を接続するワイヤーケーブル51を示している。
接触子2は、被検査基板に形成される配線パターンの各検査点に接触する端子である。接続電極体4は、接触子2により被検査基板に設けられる検査点間のピッチを大きくして検査信号処理部5へと導通接触を行うことを可能とするピッチ変換の役割を担っている。
接続電極体4は、保持体3の配置側に接触子2と電気的に接続する電極部41を有している。
本発明は、長期間使用しても、接触安定性が高い電極部を提案する。
The best mode for carrying out the present invention will be described.
FIG. 1 schematically shows the configuration of a substrate inspection jig according to the present invention. In FIG. 1, a plurality of contacts 2, a holding body 3 that holds the contacts 2 in a multi-needle shape, and an electrode portion 41 that supports the holding body 3 and is brought into conduction with the contact 2. The wire electrode 51 which connects the connection electrode body 4, the test | inspection signal process part 5 which processes the detected electrical signal, and the contactor 2 test | inspection signal process part 5 is shown.
The contact 2 is a terminal that contacts each inspection point of the wiring pattern formed on the substrate to be inspected. The connection electrode body 4 plays a role of pitch conversion that enables the contact 2 to increase the pitch between inspection points provided on the substrate to be inspected and to conduct contact with the inspection signal processing unit 5.
The connection electrode body 4 has an electrode portion 41 that is electrically connected to the contact 2 on the arrangement side of the holding body 3.
The present invention proposes an electrode part having high contact stability even when used for a long period of time.

本発明に係る一実施形態の基板検査用治具1は、基板検査用治具ヘッド11を有している。この基板検査用治具ヘッド11は、接触子2と保持体3を有している。
図2は、基板検査用治具ヘッドの一実施形態を示しており、(a)は斜視図を示し、(b)は側面図を示している。この図2で示される如く、基板検査用治具ヘッド11は、複数の接触子2を保持体3により保持している。
A substrate inspection jig 1 according to an embodiment of the present invention includes a substrate inspection jig head 11. The substrate inspection jig head 11 has a contact 2 and a holder 3.
FIG. 2 shows an embodiment of a jig head for substrate inspection, where (a) shows a perspective view and (b) shows a side view. As shown in FIG. 2, the substrate inspection jig head 11 holds a plurality of contacts 2 by a holding body 3.

接触子2は、その一方の端部2aが複数の検査点の一つに圧接されるとともに、他方の端部2bが電極部41に圧接される。このように各端部2a、2bが検査点と電極部に圧接されることになるので、この接触子2を介して検査点と電極部を導通させることができる。
この接触子2は、導電性を有する棒状に形成されている。この接触子2は、図2(a)で示す如く、多針状に配置され、その外周には絶縁層が被覆されている。この絶縁被覆は、棒状の導電部の両端を除いた部分を被覆している。
さらに、接触子2は、可撓性を有して且つ弾力性を有している。このため、接触子2が検査点と電極部に圧接された際には、この接触子2が湾曲して撓むことになり、この結果、接触子2が検査点と電極部を押圧することになる。
この接触子2は、上記の説明の如く、表面上に、検査点と電極部に夫々導通接触する導電部と、他の接触子との短絡を防止する絶縁部が形成されることになるが、この導電部と絶縁部の境界は、後述する保持体の内部に配置されることもできるし、二つの保持体間の間に配置することもできる。
尚、この境界部分は、絶縁部と導電部により段差が生じることになるので、この段部と保持体の案内孔の径の大きさを用いて、抜け防止とすることもできる。
One end 2 a of the contact 2 is pressed against one of the plurality of inspection points, and the other end 2 b is pressed against the electrode portion 41. Since the end portions 2a and 2b are pressed against the inspection point and the electrode portion in this way, the inspection point and the electrode portion can be electrically connected via the contactor 2.
The contact 2 is formed in a bar shape having conductivity. As shown in FIG. 2A, the contact 2 is arranged in a multi-needle shape, and an outer periphery thereof is covered with an insulating layer. This insulating coating covers a portion excluding both ends of the rod-like conductive portion.
Furthermore, the contact 2 has flexibility and elasticity. For this reason, when the contact 2 is pressed against the inspection point and the electrode portion, the contact 2 is bent and bent, and as a result, the contact 2 presses the inspection point and the electrode portion. become.
As described above, the contact 2 is formed on the surface with a conductive portion that is in conductive contact with the inspection point and the electrode portion, respectively, and an insulating portion that prevents a short circuit between the other contacts. The boundary between the conductive portion and the insulating portion can be disposed inside a holding body, which will be described later, or between the two holding bodies.
In this boundary portion, a step is generated by the insulating portion and the conductive portion, so that the diameter of the step portion and the guide hole of the holding body can be used to prevent the separation.

接触子2の両端部又は他方端部2bは、その先端を、例えば半球面のような曲面に形成されていることが好ましい。このように形成することにより、検査点又は電極部の接触面に対して高い位置精度を持って接触させることができるからである。詳細は後述するが、このように曲面(球面)形状とすることにより電極部41へ確実に且つ安定して接触することが可能となるからである。   It is preferable that both ends or the other end 2b of the contactor 2 are formed with curved surfaces such as hemispheres, for example. This is because by forming in this way, it is possible to make contact with the inspection point or the contact surface of the electrode portion with high positional accuracy. Although details will be described later, it is possible to reliably and stably contact the electrode portion 41 by using the curved surface (spherical surface) as described above.

図2で示される治具ヘッド11では、保持体3が上板部31と下板部32により形成されている。この上板部31と下板部32は、所定間隔を有して配置され、両板部の空間内で接触子2が撓むことが可能となっている。
この上板部31と下板部32は、夫々対象となる接触子2を案内する案内孔が夫々形成されており、上板部31の案内孔により検査点へ接触子2の端部2aが案内され、下板部32の案内孔により電極部41へ接触子2の他端2bが案内される。
図2(b)で示される治具ヘッド11では、上板部31と下板部32から夫々所定の長さ分だけ接触子2が突出している様子が示されている。
この突出する所定長さは、接触子2の撓み具合に応じて適宜設計者により調整される。
図2で示される治具ヘッド11の上板部31と下板部32は、夫々二枚の板部材により形成されているが、枚数は特に限定されない。
尚、基板検査用治具ヘッド11は、上記の構成に限定されるものではなく、接触子2を保持するとともに、電極部41に導通接触させることができるものであれば特に限定されるものではない。
In the jig head 11 shown in FIG. 2, the holding body 3 is formed by an upper plate portion 31 and a lower plate portion 32. The upper plate portion 31 and the lower plate portion 32 are arranged with a predetermined interval so that the contact 2 can be bent in the space of both plate portions.
The upper plate portion 31 and the lower plate portion 32 are respectively formed with guide holes for guiding the target contact 2, and the end 2 a of the contact 2 is connected to the inspection point by the guide hole of the upper plate portion 31. The other end 2 b of the contact 2 is guided to the electrode portion 41 through the guide hole of the lower plate portion 32.
In the jig head 11 shown in FIG. 2B, the contact 2 is projected from the upper plate portion 31 and the lower plate portion 32 by a predetermined length.
The protruding predetermined length is appropriately adjusted by the designer according to the degree of deflection of the contact 2.
Although the upper plate portion 31 and the lower plate portion 32 of the jig head 11 shown in FIG. 2 are each formed by two plate members, the number of the plate is not particularly limited.
The substrate inspection jig head 11 is not limited to the above-described configuration, and is not particularly limited as long as it can hold the contact 2 and can be brought into conductive contact with the electrode portion 41. Absent.

接続電極体4は、複数の接触子2のそれぞれの接触子2の他方端部2bと対向して配置された複数の電極部41を備え、基板検査用治具ヘッド11を支持する。
図3は、接続電極体4の一実施形態の一部を示しており、図3(a)は接続電極体4の表面斜視図を示しており、(b)は接続電極体の一部の側断面を示している。
図3(a)で示す如く、接続電極体4は、接触子2と接触して導通する電極部41と、治具ヘッド11を支持する支持板42を有している。また、接続電極体4は、その表面に複数の電極部41の接触子2と接触する接触面が形成されている。この電極部41の接触面と接触子2が接触することにより電気的導通が行われる。
The connection electrode body 4 includes a plurality of electrode portions 41 disposed to face the other end 2b of each contact 2 of the plurality of contacts 2, and supports the substrate inspection jig head 11.
FIG. 3 shows a part of one embodiment of the connection electrode body 4, FIG. 3A shows a perspective view of the surface of the connection electrode body 4, and FIG. 3B shows a part of the connection electrode body 4. A side section is shown.
As shown in FIG. 3A, the connection electrode body 4 includes an electrode portion 41 that is in contact with the contact 2 and is conductive, and a support plate 42 that supports the jig head 11. Moreover, the contact surface which contacts the contact 2 of the some electrode part 41 is formed in the connection electrode body 4 on the surface. Electrical contact is made when the contact surface of the electrode portion 41 and the contact 2 come into contact with each other.

電極部41は、導電性を有する線状の芯部412と、この芯部412の外周を覆う導電性の側部411からなる。
この芯部412は、銅線などの線状の導電体が用いられており、この芯部412が延設されることによって、上記するワイヤーケーブル51の端部を形成する。
側部411は、芯部412の外周を覆うように配置されるが、例えば、芯部412の外径と略同じ又は僅かに大きい内径を有する筒状部材を用いて、この筒状部材(円筒)の内部に円柱状の芯部412が収容されるようにしてもよい。この芯部412と側部411は、共に導電性材料からなり互いに接触して、電気的導通状態になっている。
このため、側部411と芯部412は、同心に配置されることになる。この結果、電極部41の接触面は、内側に芯部412が配置され、外側に側部411が配置される同心の円形に形成されることになる。
尚、電極部41は、接続電極体4の表面と面一となるように形成されるため、芯部412と側部411も、接続電極体4の表面と面一となるように形成されることになる。
The electrode portion 41 includes a linear core portion 412 having conductivity and a conductive side portion 411 that covers the outer periphery of the core portion 412.
The core portion 412 uses a linear conductor such as a copper wire, and the end portion of the wire cable 51 described above is formed by extending the core portion 412.
The side portion 411 is disposed so as to cover the outer periphery of the core portion 412. For example, a cylindrical member (cylindrical member) having an inner diameter substantially the same as or slightly larger than the outer diameter of the core portion 412 is used. ) May be accommodated with a cylindrical core portion 412. The core portion 412 and the side portion 411 are both made of a conductive material and are in contact with each other to be in an electrically conductive state.
For this reason, the side part 411 and the core part 412 are arrange | positioned concentrically. As a result, the contact surface of the electrode part 41 is formed in a concentric circle in which the core part 412 is arranged on the inner side and the side part 411 is arranged on the outer side.
Since the electrode part 41 is formed so as to be flush with the surface of the connection electrode body 4, the core part 412 and the side part 411 are also formed so as to be flush with the surface of the connection electrode body 4. It will be.

側部411と芯部412は、導電性の素材により形成されているが、側部411は芯部412よりも耐摩耗性に優れた素材により形成されている。
このため、芯部412は、接触子2が繰り返し接触した場合、側部411に比して、摩耗して摩り減ることになる。この結果、芯部412は、側部411よりも電極部41の表面から窪んだ形状となる。
The side portion 411 and the core portion 412 are formed of a conductive material, but the side portion 411 is formed of a material that is more excellent in wear resistance than the core portion 412.
For this reason, when the contact 2 repeatedly contacts, the core portion 412 is worn and worn away as compared with the side portion 411. As a result, the core portion 412 has a shape that is recessed from the surface of the electrode portion 41 rather than the side portion 411.

側部411と芯部412は、また、側部411の硬度が芯部412の硬度より高い硬度を有していてもよい。
このため、接触子2が電極部41の接触面に接触して摩耗していく場合には、表面内側に配置される芯部412が摩り減ることになる。このため、電極部41の接触面は、凹字形状となる。このため、電極部41が窪みを有する形状となる。
この結果、接触子2が接触面に接触する場合には、接触子2の先端が窪み形状となる芯部412に接触するとともに、接触子2の先端の外周が側部411に接触することになる。このため、接触子2と電極部41は、芯部412及び/又は側部411と接触することになるので、安定した接触状態を提供することができる。
また、接触子2は使用時において一定方向に撓ませて使用することになるが、接触子2が撓んだ場合、接触面に対して所定角度に傾斜して配置されることになるが、側部411が接触子2の滑走を防止することができる。
尚、耐摩耗性に優れた素材として、ニッケル(Ni)、ルテニウム(Ru)、白金(Pt)、クロム(Cr)やロジウム(Rh)を例示することができ、特に、クロムとロジウムは耐磨耗性に優れている。
この側部411と芯部412の素材としては、上記の如く、側部411の硬度が芯部412の硬度よりも高いことが条件であるが、例えばその組み合わせとして、ニッケル(Ni)と銅(Cu)や、ロジウム(Rh)と銅(Cu)、ニッケル(Ni)と黄銅を例示することができる。
The side part 411 and the core part 412 may have a hardness that the hardness of the side part 411 is higher than the hardness of the core part 412.
For this reason, when the contact 2 comes into contact with the contact surface of the electrode portion 41 and wears, the core portion 412 disposed inside the surface is worn away. For this reason, the contact surface of the electrode part 41 becomes a concave shape. For this reason, the electrode part 41 becomes a shape which has a hollow.
As a result, when the contact 2 comes into contact with the contact surface, the tip of the contact 2 comes into contact with the core portion 412 having a hollow shape, and the outer periphery of the tip of the contact 2 comes into contact with the side portion 411. Become. For this reason, since the contact 2 and the electrode part 41 will contact the core part 412 and / or the side part 411, the stable contact state can be provided.
In addition, the contact 2 is used by being bent in a certain direction at the time of use, but when the contact 2 is bent, it is disposed at a predetermined angle with respect to the contact surface. The side part 411 can prevent the contact 2 from sliding.
Examples of materials having excellent wear resistance include nickel (Ni), ruthenium (Ru), platinum (Pt), chromium (Cr) and rhodium (Rh). Excellent wear resistance.
As described above, the material of the side portion 411 and the core portion 412 is that the hardness of the side portion 411 is higher than the hardness of the core portion 412. For example, as a combination thereof, nickel (Ni) and copper ( Cu), rhodium (Rh) and copper (Cu), nickel (Ni) and brass can be exemplified.

この芯部412と側部411は、夫々、外径r1と外径r2を有していることになる。これらの外径は、接触子2との導通を確実に行うことができる大きさであれば特に限定されないが、接触子2が芯部412と側部411に同時に接触することができるように設定されることが好ましく、例えば、芯部412の外径r1が接触子2の導電部の外径よりも短く、又は、側部411の外径r2が接触子2の外径と略同じ又は短くなるように形成することが好ましい。
このように形成することによって、接触子2の底面が芯部412に接触し、接触子2の側面が側部411に接触することになり、接触子2が芯部412と側部411に接触することになる。
接触子2の外径は、30〜110μmに形成されるので、例えば、芯部412の外径は、20〜100μmに形成され、側部411の外径は、40〜120μmに形成される。
The core portion 412 and the side portion 411 have an outer diameter r1 and an outer diameter r2, respectively. These outer diameters are not particularly limited as long as they can be reliably connected to the contact 2, but are set so that the contact 2 can simultaneously contact the core portion 412 and the side portion 411. For example, the outer diameter r1 of the core part 412 is shorter than the outer diameter of the conductive part of the contactor 2, or the outer diameter r2 of the side part 411 is substantially the same or shorter than the outer diameter of the contactor 2. It is preferable to form it as follows.
By forming in this way, the bottom surface of the contact 2 comes into contact with the core portion 412, the side surface of the contact 2 comes into contact with the side portion 411, and the contact 2 comes into contact with the core portion 412 and the side portion 411. Will do.
Since the outer diameter of the contact 2 is formed to be 30 to 110 μm, for example, the outer diameter of the core portion 412 is formed to 20 to 100 μm, and the outer diameter of the side portion 411 is formed to 40 to 120 μm.

図3(b)で示される実施形態では、支持体42が二枚の上板部材(上板部材421、下板部材422)により形成されている。
この上板部材421は、接続電極体4の表面側を形成する板状の部材であり、この上板部材421は、径の相違する二つの孔が形成されている。この二つの径の相違する大小の孔(小孔、大孔)は、小孔423は電極部41の側部411の外径よりも僅かに大きい径を有するように形成されており、電極部41の接触面を案内している。
大孔424は、電極部41を固定するための空間として用いられていることができる。例えば、図3(b)では、電極部41を固定するために、電極部41が配置された後に、接着剤43により固定を行っている。この場合、接着剤43が電極部41の外周を覆うようになるが、この大孔424に余分な接着剤が溜まることになり、空間を無駄なく用いることができる。
尚、図3(b)では、上板部材421と下板部材422が、所定空間を有して配置されているが、密接して配置されていてもよい。図3(b)の如き空間を有して配置される際には、この空間を用いることにより、上記の如き余分な接着剤43を吸収することができる。
In the embodiment shown in FIG. 3B, the support 42 is formed of two upper plate members (upper plate member 421 and lower plate member 422).
The upper plate member 421 is a plate-like member that forms the surface side of the connection electrode body 4, and the upper plate member 421 is formed with two holes having different diameters. The small and large holes (small holes, large holes) having different diameters are formed such that the small hole 423 has a diameter slightly larger than the outer diameter of the side portion 411 of the electrode portion 41. 41 contact surfaces are guided.
The large hole 424 can be used as a space for fixing the electrode part 41. For example, in FIG. 3B, in order to fix the electrode part 41, the electrode part 41 is arranged and then fixed with the adhesive 43. In this case, the adhesive 43 covers the outer periphery of the electrode portion 41. However, excess adhesive is accumulated in the large hole 424, and the space can be used without waste.
In FIG. 3B, the upper plate member 421 and the lower plate member 422 are arranged with a predetermined space, but may be arranged closely. When arranged with a space as shown in FIG. 3B, the extra adhesive 43 as described above can be absorbed by using this space.

下板部材422は、上板部材421と同様に相違する二つの径を有する孔(小孔425、大孔426)が形成されている。この下板部材422は、上板部材421の孔と一直線状に整合するように配置されている。
このため、図3(b)で示す如く、上板部材421の大孔424と下板部材422の大孔426が対向して配置されることになり、上記の説明の如き空間が形成されることになる。
下板部材422の小孔425は、電極部41の位置を案内するとともに芯部412から延びる線部を案内する。この下板部材422の小孔425の径は、側部411の外径よりも僅かに大きい径を有していることが好ましい。このように形成されることによって、電極部41の位置精度を向上させることができるからである。
The lower plate member 422 is formed with holes (small holes 425, large holes 426) having two different diameters, similar to the upper plate member 421. The lower plate member 422 is arranged so as to be aligned with the hole of the upper plate member 421.
For this reason, as shown in FIG. 3B, the large hole 424 of the upper plate member 421 and the large hole 426 of the lower plate member 422 are arranged to face each other, and a space as described above is formed. It will be.
The small hole 425 of the lower plate member 422 guides the position of the electrode part 41 and the line part extending from the core part 412. The diameter of the small hole 425 of the lower plate member 422 is preferably slightly larger than the outer diameter of the side portion 411. This is because the position accuracy of the electrode part 41 can be improved by forming in this way.

図4は、電極部の使用状態を示す断面図である。図4(a)では、使用回数が多くない(使用して間もない)状態の場合を示しており、図4(b)では、使用回数が多くなり芯部412が摩耗して、摩り減った状態を示している。
本発明に係る基板検査用治具1は、初めは図4(a)で示される如く、電極部41が接続電極体4の表面と面一となっている。
一方、基板検査用治具を使用すると、接触子2と電極部41の接触面とが多数回接触することになり、図4(b)で示される如く、電極部41の芯部412が摩耗により摩り減ってくるようになる。
このとき、接触子2が電極部41に接触する場合には、接触子2が芯部412及び/又は側部411に接触するようになる。この結果、通常の電極部に比して、接触子2が電極部41に確実に接触することになる。
以上が本発明に係る基板検査用治具の構成の説明である。
FIG. 4 is a cross-sectional view showing a usage state of the electrode portion. FIG. 4A shows a case where the number of uses is not large (just after use), and in FIG. 4B, the number of uses increases and the core portion 412 is worn and worn away. Shows the state.
In the substrate inspection jig 1 according to the present invention, the electrode portion 41 is initially flush with the surface of the connection electrode body 4 as shown in FIG.
On the other hand, when the substrate inspection jig is used, the contact 2 and the contact surface of the electrode portion 41 come into contact with each other many times, and the core portion 412 of the electrode portion 41 is worn as shown in FIG. Will wear out.
At this time, when the contact 2 comes into contact with the electrode part 41, the contact 2 comes into contact with the core part 412 and / or the side part 411. As a result, the contact 2 is surely in contact with the electrode part 41 as compared with a normal electrode part.
The above is the description of the configuration of the substrate inspection jig according to the present invention.

本発明に係る基板検査用治具1の接続電極体4の製造方法を説明する。
本発明の基板検査用治具1の接続電極体4は、下記の方法により製造することができるが、この方法は単に一実施形態を示しているに過ぎず、他の方法で製造することもできるし、ここに記載される工程の順序を変更して製造することもできる。
まず、基板検査用治具ヘッド11を製造する。このとき、基板検査治具ヘッド11は、検査対象となる基板が有する配線パターンにおける検査点により、保持する接触子2の本数及び配置位置が決定されることになる。
A method for manufacturing the connection electrode body 4 of the substrate inspection jig 1 according to the present invention will be described.
The connection electrode body 4 of the substrate inspection jig 1 of the present invention can be manufactured by the following method, but this method is merely an embodiment, and may be manufactured by other methods. It can also be manufactured by changing the order of the steps described here.
First, the substrate inspection jig head 11 is manufactured. At this time, the board inspection jig head 11 determines the number and arrangement position of the contacts 2 to be held based on the inspection points in the wiring pattern of the board to be inspected.

基板検査用治具ヘッド11の接触子2の本数と配置位置が決定されると、この配置に従って、接続電極体4の電極部41の数と位置が決定される。
電極部41の数と位置が決定されるとその数と位置に応じて、支持板42となる上板部材421と下板部材422に、径の相違する二つの小孔、大孔が夫々形成される。
小孔と大孔が夫々形成された上板部材421と下板部材422が用意されると、まず、図5(a)で示される如く、上板部材421を配置して、小孔423へ、電極部41を挿入する。このとき、挿入される電極部41は、芯部412と側部411が所定の長さ以上の長さを有するように形成されている。この所定の長さは、少なくとも上板部材421の厚みよりも長く準備されており、上板部材421の上面(小孔423)から突出している。
When the number and arrangement position of the contacts 2 of the board inspection jig head 11 are determined, the number and position of the electrode portions 41 of the connection electrode body 4 are determined according to this arrangement.
When the number and position of the electrode portions 41 are determined, two small holes and large holes having different diameters are formed in the upper plate member 421 and the lower plate member 422, which are the support plates 42, according to the number and position, respectively. Is done.
When an upper plate member 421 and a lower plate member 422 each having a small hole and a large hole are prepared, first, as shown in FIG. 5A, the upper plate member 421 is arranged and the small hole 423 is moved to. The electrode part 41 is inserted. At this time, the inserted electrode part 41 is formed such that the core part 412 and the side part 411 have a length equal to or longer than a predetermined length. The predetermined length is prepared to be longer than at least the thickness of the upper plate member 421 and protrudes from the upper surface (small hole 423) of the upper plate member 421.

次に、下板部材422が、図5(b)で示される如く、対応する位置に配置される。このため、上板部材421と下板部材422の孔に電極部41が挿通されることになる。
尚、上板部材421及び下板部材422を先に積層してから、各部材の孔に電極部41を貫通させても構わない。
Next, the lower plate member 422 is disposed at a corresponding position as shown in FIG. For this reason, the electrode part 41 is inserted through the holes of the upper plate member 421 and the lower plate member 422.
In addition, after laminating | stacking the upper board member 421 and the lower board member 422 previously, the electrode part 41 may be penetrated to the hole of each member.

上板部材421と下板部材422の孔に電極部41が挿入されると、下板部材422側から接着剤43が充填される(図5(c)参照)。この接着剤43によって、上板部材421と下板部材422に電極部41が接着されることになる。
この場合、余分な接着剤43は、上板部材421と下板部材422の間に形成される空間に溜まることになるので、上板部材421と下板部材422がこの接着剤43によりずれたりいがんだりすることを防止することができる。
When the electrode portion 41 is inserted into the holes of the upper plate member 421 and the lower plate member 422, the adhesive 43 is filled from the lower plate member 422 side (see FIG. 5C). The electrode portion 41 is bonded to the upper plate member 421 and the lower plate member 422 by the adhesive 43.
In this case, the excess adhesive 43 is accumulated in a space formed between the upper plate member 421 and the lower plate member 422, so that the upper plate member 421 and the lower plate member 422 are displaced by the adhesive 43. It is possible to prevent harassment.

上板部材421と下板部材422に電極部41が固定されると、図5(c)で示される如く、上板部材421の表面側から電極部41が突出して配置されているので、接続電極体4の上板部材421の表面と面一になるように突出部分を取り除く(図5(d)参照)。
このようにして、基板検査用治具の接続電極体が形成されることになる。
When the electrode part 41 is fixed to the upper plate member 421 and the lower plate member 422, as shown in FIG. 5 (c), the electrode part 41 protrudes from the surface side of the upper plate member 421. The protruding portion is removed so as to be flush with the surface of the upper plate member 421 of the electrode body 4 (see FIG. 5D).
In this way, the connection electrode body of the board inspection jig is formed.

本発明に係る基板検査用治具の構成を示す概略図である。It is the schematic which shows the structure of the jig | tool for board | substrate inspection which concerns on this invention. 本発明に係る基板検査用治具ヘッドの一実施形態を示す。1 shows an embodiment of a jig head for substrate inspection according to the present invention. 本発明に係る基板検査用治具の接続電極体を示す概略図である。It is the schematic which shows the connection electrode body of the jig | tool for board | substrate inspection which concerns on this invention. 電極部の使用状態を示す断面図である。It is sectional drawing which shows the use condition of an electrode part. 本発明に係る基板検査用治具の接続電極体を製造する工程を示す。The process of manufacturing the connection electrode body of the jig | tool for board | substrate inspection which concerns on this invention is shown.

符号の説明Explanation of symbols

1・・・・基板検査用治具
2・・・・接触子
3・・・・保持体
4・・・・接続電極体
41・・・電極部
411・・側部
412・・芯部
DESCRIPTION OF SYMBOLS 1 ...... Jig for substrate inspection 2 ... Contact 3 ... Holding body 4 ... Connection electrode body 41 ... Electrode part 411 ... Side part 412, ... Core part

Claims (6)

被検査基板の電気的特性を検査するために、基板検査装置本体と該被検査基板の配線パターンに設けられる複数の検査点との間の電気的導通を得るための基板検査用治具であって、
該基板検査治具は、
両端に電気的な接触により導通可能となる端部を有する接触子であって、その一方の端部が複数の前記基板被検査点の一つに圧接される、それぞれ導電性を有する棒状の接触子、よりなる接触子群と、
前記接触子群を保持する保持体と、
前記接触子群のそれぞれの接触子の他方端部と対向して配置された複数の電極部を備える前記基板検査装置本体に接続される接続電極体とにより構成され、
前記電極部は、導電性を有する線状の芯部と、該芯部の外周を覆う導電性の側部を有し、
前記側部は、前記芯部よりも耐摩耗性に優れた素材により形成されていることを特徴とする基板検査用治具。
A substrate inspection jig for obtaining electrical continuity between a substrate inspection apparatus main body and a plurality of inspection points provided on a wiring pattern of the substrate to be inspected in order to inspect the electrical characteristics of the substrate to be inspected. And
The substrate inspection jig is
A contact having an end that can be electrically connected to both ends by electrical contact, one end of which is pressed against one of the plurality of substrate inspection points, each having a conductive rod-like contact A contact group of children,
A holding body for holding the contact group;
It is constituted by a connection electrode body connected to the substrate inspection apparatus main body comprising a plurality of electrode portions arranged to face the other end of each contact of the contact group,
The electrode part has a linear core part having conductivity and a conductive side part covering the outer periphery of the core part,
The substrate inspection jig, wherein the side portion is formed of a material having higher wear resistance than the core portion.
前記側部が、前記芯部の硬度より高い硬度を有することを特徴とする請求項1記載の基板検査用治具。   The substrate inspection jig according to claim 1, wherein the side portion has a hardness higher than a hardness of the core portion. 前記芯部が円柱に形成され、前記側部が円筒に形成され、前記芯部と前記側部が同心に配置されていることを特徴とする請求項1又は2に記載の基板検査用治具。   The substrate inspection jig according to claim 1, wherein the core is formed in a column, the side is formed in a cylinder, and the core and the side are arranged concentrically. . 前記芯部の端部表面が円形に形成され、前記側部の端部表面が該芯部と同心となる円形に形成され、
前記側部の内径が前記接触子の外径よりも小さく形成されていることを特徴とする請求項1乃至3いずれかに記載の基板検査用治具。
The end surface of the core is formed in a circle, the end surface of the side is formed in a circle that is concentric with the core,
The substrate inspection jig according to claim 1, wherein an inner diameter of the side portion is formed smaller than an outer diameter of the contact.
前記接触子の他方端部が、曲面状に形成されていることを特徴とする請求項1乃至4いずれかに記載の基板検査用治具。   5. The substrate inspection jig according to claim 1, wherein the other end of the contact is formed in a curved shape. 被検査基板の電気的特性を検査するために、基板検査装置本体と該被検査基板の配線パターンに設けられる複数の検査点との間の電気的導通を得るために用いられる複数の接触子と接触して電気的導通を可能にする基板検査用治具が有する電極部構造であって、
前記電極部は、導電性を有する線状の芯部と、該芯部の外周を覆う導電性の側部を有し、
前記側部は、前記芯部よりも耐摩耗性に優れた素材により形成されていることを特徴とする基板検査用治具の電極部構造。
A plurality of contacts used to obtain electrical continuity between a substrate inspection apparatus main body and a plurality of inspection points provided on a wiring pattern of the substrate to be inspected in order to inspect the electrical characteristics of the substrate to be inspected; The electrode part structure of the substrate inspection jig that enables electrical conduction by contact,
The electrode part has a linear core part having conductivity and a conductive side part covering the outer periphery of the core part,
The electrode part structure for a substrate inspection jig, wherein the side part is formed of a material having higher wear resistance than the core part.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10287656B2 (en) * 2009-09-09 2019-05-14 Nissan Motor Co., Ltd. Rare earth magnet molding and method for manufacturing the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0336558Y2 (en) * 1988-07-07 1991-08-02
JP2003506833A (en) * 1999-08-02 2003-02-18 グリフィクス インコーポレーティッド Fine pitch wiring with controlled compliance

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0336558Y2 (en) * 1988-07-07 1991-08-02
JP2003506833A (en) * 1999-08-02 2003-02-18 グリフィクス インコーポレーティッド Fine pitch wiring with controlled compliance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10287656B2 (en) * 2009-09-09 2019-05-14 Nissan Motor Co., Ltd. Rare earth magnet molding and method for manufacturing the same

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