Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP4477183B2 - Circuit board inspection method and circuit board inspection apparatus - Google Patents
[go: Go Back, main page]

JP4477183B2 - Circuit board inspection method and circuit board inspection apparatus - Google Patents

Circuit board inspection method and circuit board inspection apparatus Download PDF

Info

Publication number
JP4477183B2
JP4477183B2 JP2000043705A JP2000043705A JP4477183B2 JP 4477183 B2 JP4477183 B2 JP 4477183B2 JP 2000043705 A JP2000043705 A JP 2000043705A JP 2000043705 A JP2000043705 A JP 2000043705A JP 4477183 B2 JP4477183 B2 JP 4477183B2
Authority
JP
Japan
Prior art keywords
circuit board
inspection
capacitance
suction
substrate holding
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.)
Expired - Lifetime
Application number
JP2000043705A
Other languages
Japanese (ja)
Other versions
JP2001235500A (en
Inventor
和彦 関
秀雄 日置
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hioki EE Corp
Original Assignee
Hioki EE Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hioki EE Corp filed Critical Hioki EE Corp
Priority to JP2000043705A priority Critical patent/JP4477183B2/en
Publication of JP2001235500A publication Critical patent/JP2001235500A/en
Application granted granted Critical
Publication of JP4477183B2 publication Critical patent/JP4477183B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Measuring Leads Or Probes (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Tests Of Electronic Circuits (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、吸引型の基板載置台上に載置した回路基板を吸引手段で吸引して所定検査位置に保持した状態で所定の電気的検査を実行する回路基板検査方法、およびその回路基板検査方法を実行可能に構成された回路基板検査装置に関するものである。
【0002】
【従来の技術】
この種の回路基板検査方法を実行可能に構成された検査装置として、図7,8に示す回路基板検査装置31が従来から知られている。この回路基板検査装置31は、回路基板Pを所定の検査位置に保持するための基板保持機構2と、プローブ固定具6a,7aを介して移動機構5a,5bに取り付けられた検査用プローブ6,7と、基板保持機構2や移動機構5a,5bの動作制御および検査用プローブ6,7を介しての検査処理を実行する制御部38と、制御部38の演算結果を一時的に記憶するRAM9と、制御部38の動作プログラムを記憶するROM40とを備えて構成されている。また、図8に示すように、基板保持機構2は、上面に複数の吸入口11a,11a・・が形成されると共に側面に吸出口11bが形成された吸引型の載置台11と、載置台11の上面に貼付された多孔性絶縁シート12と、載置台11の吸出口11bに連結され内部空間Sの空気を排出するエアポンプ13(図7参照)とを備えている。
【0003】
一方、図6に示すように、回路基板Pは、ガラスエポキシ系の基材21における表面Paおよび裏面Pbに導体パターン22,22・・,23,23・・が形成されて構成されている。この場合、導体パターン22,22・・,23,23・・は、例えば、スルーホール24,24・・によって電気的に接続されている。
【0004】
この回路基板検査装置31を用いた回路基板Pの検査に際しては、まず、載置台11における多孔性絶縁シート12の上に回路基板Pを載置する。次に、制御部38の制御に従い、エアポンプ13が、載置台11における内部空間Sの空気を吸出口11bを介して吸出する。これに伴い、回路基板Pおよび基板保持機構2間の空気が、多孔性絶縁シート12の細かい孔を通過した後、吸入口11a,11a・・を介して内部空間Sに吸入される。これにより、回路基板Pが載置台11に向けて吸引されることにより、所定の検査位置に保持される。次いで、移動機構5a,5bが、制御部38の制御下で、回路基板Pの表面Paに形成された検査対象の導体パターン22,22の上方に検査用プローブ6,7をそれぞれ移動させる。続いて、制御部38が、移動機構5a,5bを駆動して検査用プローブ6,7を下動させることにより、検査用プローブ6,7の先端部を導体パターン22,22に接触させる。この後、制御部38が、検査用プローブ6,7を介して導体パターン22,22間に所定の検査信号を出力することにより、断線や短絡の有無を検査する。この電気的検査をすべての検査対象の導体パターン22,22・・,23,23・・について順次実行することにより、回路基板Pの良否が判別される。
【0005】
【発明が解決しようとする課題】
ところが、従来の回路基板検査方法には、以下の問題点がある。すなわち、従来の回路基板検査装置31では、エアポンプ13によって回路基板Pを吸引することによって、検査対象の回路基板Pを載置台11上の所定検査位置に保持している。しかし、回路基板Pが大きく反っている場合には、エアポンプ13による吸引時に、回路基板Pと多孔性絶縁シート12との間に生じている隙間を介して回路基板Pの周囲の空気が吸い込まれてしまう。このため、従来の回路基板検査装置31には、回路基板Pを吸引する力が弱まる結果、所定検査位置に回路基板Pを確実に保持することが困難であるという問題点が存在する。この場合、中央部が上方に突出し、かつ外縁部が多孔性絶縁シート12に接するように反った回路基板P、スルーホール24が数多く形成された回路基板P、および電子部品設置用の大径孔が形成された回路基板の場合においても、その回路基板Pの表面Pa側の空気がスルーホール24や大径孔などを介して吸入されるため、吸引力が減少する結果、所定の検査位置に回路基板Pを保持するのが困難となる。また、回路基板Pが反った状態で検査用プローブ6,7を接触させた場合、その先端部が導体パターン22,22・・に強く押し当てられるおそれがあり、かかる場合には、回路基板Pや検査用プローブ6,7の損傷を招くことがあるという問題点も存在する。
【0006】
本発明は、かかる問題点に鑑みてなされたものであり、検査対象の回路基板の反りを矯正しつつ、所定の検査位置に回路基板を確実に保持した状態で所定の電気的検査を実行可能な回路基板検査方法および回路基板検査装置を提供することを主目的とする。
【0007】
【課題を解決するための手段】
上記目的を達成すべく請求項1記載の回路基板検査方法は、検査対象の回路基板を吸引型基板載置台上に載置し、吸引型基板載置台に載置した状態の回路基板を絶縁性素材製の弾性薄膜で覆った後、吸引型基板載置台を介して吸引手段で吸引することにより回路基板を吸引型基板載置台上の所定検査位置に保持させ、その状態で回路基板に対して所定の電気的検査を行う回路基板検査方法であって静電容量測定型検査用プローブを弾性薄膜を介して回路基板に当接させて静電容量測定型検査用プローブと回路基板の導体パターンとの間の静電容量を測定して、測定した静電容量に基づく非接触検査を所定の電気的検査として行うことを特徴とする。
【0009】
請求項記載の回路基板検査方法は、請求項1記載の回路基板検査方法において、弾性薄膜としてシリコンラバーを用いることを特徴とする。
【0010】
請求項記載の回路基板検査装置は、請求項1または2記載の回路基板検査方法を実行可能に構成された回路基板検査装置であって、静電容量測定型検査用プローブを備え、静電容量測定型検査用プローブを弾性薄膜を介して回路基板に当接させて静電容量測定型検査用プローブと回路基板の導体パターンとの間の静電容量を測定して、測定した静電容量に基づく非接触検査を所定の電気的検査として行うことを特徴とする。
【0011】
【発明の実施の形態】
以下、添付図面を参照して、回路基板検査方法および回路基板検査装置の好適な発明の実施の形態について説明する。なお、従来の回路基板検査装置31と同一の構成要素、および検査対象の回路基板Pについては、同一の符号を付して重複した説明を省略する。
【0012】
最初に、本発明における回路基板検査方法を実行可能に構成された回路基板検査装置1の構成について、図1,2を参照して説明する。
【0013】
図1に示すように、回路基板検査装置1は、基板保持機構2、基板保持用フィルム3、フィルム搬送機構4、移動機構5a,5b、検査用プローブ6,7、制御部8、RAM9およびROM10を備えて構成されている。基板保持機構2は、図2に示すように、本発明における吸引型載置台に相当する載置台11と、載置台11の上面に貼付された多孔性絶縁シート12と、本発明における吸引手段に相当し載置台11における内部空間Sの空気を吸い出すエアポンプ13とを備えている。基板保持用フィルム3は、本発明における弾性薄膜に相当し、例えば、厚み30μm〜100μm程度のシリコンラバーであって、載置台11の上面とほぼ同程度の大きさに形成されている。
【0014】
フィルム搬送機構4は、移動機構4a、エゼクタ4bおよびエアポンプ4cを備えて構成され、基板保持用フィルム3を所定の待避位置から回路基板P上に搬送する。この場合、図2に示すように、エゼクタ4bは、全体として筒状に形成され、開口部が下向きとなるように移動機構4aに取り付けられている。このエゼクタ4bは、エアポンプ4cから送り込まれた空気を、基板保持用フィルム3に向けて高速に吐出することにより、基板保持用フィルム3との間に生ずる負圧を利用して基板保持用フィルム3を非接触で保持する。制御部8は、エアポンプ4c,13および移動機構4a,5a,5bの駆動制御や、検査用プローブ6,7を介して入力される検査信号に基づいて検査処理を実行する。RAM9は、制御部8の演算結果を一時的に記憶し、ROM10は、制御部8の動作プログラムを記憶する。
【0015】
次に、回路基板検査装置1を用いた回路基板Pの検査方法について、図2〜6を参照して説明する。
【0016】
まず、図2に示すように、検査対象の回路基板Pを基板保持機構2の多孔性絶縁シート12上に載置する。この状態では、回路基板Pの反りに起因する隙間Rが回路基板Pの裏面Pbと多孔性絶縁シート12との間に生じる。次いで、制御部8が、フィルム搬送機構4のエアポンプ4cを駆動してエゼクタ4bに向けて空気を圧送させる。これにより、エゼクタ4bから基板保持用フィルム3に向けて空気が高速に吹き付けられ、基板保持用フィルム3が、この際に生じる負圧でエゼクタ4bによって保持される。次いで、制御部8は、移動機構4aを駆動制御することにより、基板保持用フィルム3を回路基板Pの上方まで移動させ、その状態でエアポンプ4cの駆動を停止させる。これにより、図3に示すように、基板保持用フィルム3が回路基板Pを覆うようにして回路基板Pの表面Pa上に配置される。この場合、基板保持用フィルム3の材料としてのシリコンラバーは、絶縁性に優れているため、回路基板Pの表面Paまたは裏面Pbに接触した状態であっても、導体パターン22,22・・,23,23・・の相互間の絶縁状態を良好に維持する。
【0017】
次に、エアポンプ13が、制御部8の制御下で載置台11における内部空間Sの空気を吸い出す。これに伴い、基板保持用フィルム3および回路基板P間の空気は、回路基板Pのスルーホール24,24・・を介して隙間Rに吸入された後、さらに多孔性絶縁シート12の細かい孔および吸入口11a,11a・・を介して内部空間S内に吸入される。この場合、この回路基板検査装置1では、載置台11上に貼付されている多孔性絶縁シート12が、吸入口11a,11a・・の近傍に生じる吸引力を多孔性絶縁シート12のほぼ全面に亘って吸引するように均一化する。この結果、基板保持用フィルム3が、回路基板Pの表面Pa、および回路基板Pの周囲の多孔性絶縁シート12に密着する。この状態では、回路基板Pのスルーホール24,24・・が基板保持用フィルム3によって閉塞されるため、スルーホール24,24・・を介しての回路基板Pの表面Pa側の空気の侵入が有効に阻止される。したがって、この状態でさらに吸入することにより、隙間Rの空気が内部空間Sに吸入され、これにより、回路基板Pは、図4に示すように、その反りが矯正されつつ多孔性絶縁シート12に密着することにより、載置台11上の所定検査位置に確実に保持される。
【0018】
次いで、制御部8は、移動機構5a,5bを駆動制御することにより、検査対象の導体パターン22,22の上方に検査用プローブ6,7を移動させる。続いて、制御部8は、移動機構5a,5bを駆動して検査用プローブ6,7を下動させることにより、図5に示すように、検査用プローブ6,7の先端部を基板保持用フィルム3に貫通させて導体パターン22,22にそれぞれ接触させる。この場合、基板保持用フィルム3が非常に薄膜のため、検査用プローブ6,7は、基板保持用フィルム3を容易に貫通する。また、基板保持用フィルム3は、弾性を有するため、大きく破けることなく、検査用プローブ6,7を容易に貫通させる。また、貫通時に基板保持用フィルム3に形成された貫通孔は、基板保持用フィルム3が弾性素材のため、検査用プローブ6,7を抜き去ることにより自然と塞がれる。したがって、貫通孔を介しての空気の侵入が有効に防止されると共に、基板保持用フィルム3を繰り返して使用することができる。この後、制御部8が、検査用プローブ6,7を介して導体パターン22,22間に所定の検査信号を出力し、かつ検査用プローブ6,7を介して入力される検査信号に基づいて所定の電気的検査を実行する。この電気的検査をすべての検査対象の導体パターン22,22・・,23,23・・について順次実行することにより、回路基板Pの良否が判別される。
【0019】
このように、この回路基板検査装置1では、エアポンプ13による回路基板Pの吸引時に、回路基板Pのスルーホール24,24・・が基板保持用フィルム3によって閉塞されるため、反りを矯正しつつ載置台11上の所定検査位置に回路基板Pを確実に保持することができる。したがって、回路基板Pに対して常に一定の付勢力で検査用プローブ6,7を接触させることができる結果、検査用プローブ6,7および回路基板Pの破損を防止することができる。この場合、この回路基板検査装置1では、例えば、電子部品設置用の大径孔が形成されている回路基板であっても、その大径孔を完全に塞ぐことができるため、反りを矯正しつつ載置台11上の所定検査位置に確実に保持することができる。また、この回路基板検査装置1では、弾性を有するシリコンラバーで基板保持用フィルム3を構成したことにより、検査用プローブ6,7の貫通に起因しての破れを有効に防止することができる。したがって、食品保存用ラッピングフィルムなどを用いた場合には、貫通時に破けて繰り返し使用ができないのに対して、この回路基板検査装置1では、1枚の基板保持用フィルム3を繰り返して使用することができるため、ランニングコストを低減することができる。
【0020】
なお、本発明における弾性薄膜の材質はこれに限定されず、絶縁性素材であって弾性を有する各種素材を採用することができる。また、接触型の検査用プローブ6,7を用いて電気的検査を行う例について説明したが、静電容量測定型検査用プローブを用いての非接触検査方法にも適用が可能である。この場合には、静電容量測定型検査用プローブを回路基板Pに当接することにより、静電容量測定型検査用プローブと回路基板Pとが基板保持用フィルム3の厚み分だけ常に離間するため、静電容量測定型検査用プローブと、回路基板Pの導体パターン22との間の静電容量を正確に測定することができる。さらに、本発明の実施の形態では、基板保持用フィルム3を非接触で搬送するフィルム搬送機構4の例について説明したが、本発明における搬送機構は、これに限定されず、例えば、基板保持用フィルム3の両端部を把持して搬送する機構や、基板保持用フィルム3の外縁部に予め配設した縁部材を把持して搬送する機構を採用することもできる。
【0021】
【発明の効果】
以上のように、請求項1記載の回路基板検査方法によれば、吸引型基板載置台に載置した状態の回路基板を絶縁性素材製の弾性薄膜で覆った後、吸引手段で吸引して検査位置に保持することにより、反った回路基板、スルーホールが数多く形成された回路基板、および電子部品設置用の大径孔が形成された回路基板であっても、その反りを矯正しつつ、所定の検査位置に確実に保持することができる。また、同時に、検査用プローブや回路基板の破損を防止することもできる。また、静電容量測定型検査用プローブと回路基板の導体パターンとの間の静電容量を測定して、測定した静電容量に基づく非接触検査を所定の電気的検査として行うことにより、静電容量測定型検査用プローブと回路基板とが弾性薄膜の厚み分だけ常に離間するため、静電容量測定型検査用プローブと、回路基板の導体パターンとの間の静電容量を正確に測定することができる。
【0023】
さらに、請求項記載の回路基板検査方法によれば、シリコンラバーで弾性薄膜を構成したことにより、1枚の弾性薄膜を繰り返して使用することができるため、検査におけるランニングコストを低減することができると共に、検査用プローブを確実かつ容易に貫通させることができる。
【0024】
また、請求項記載の回路基板検査装置によれば、静電容量測定型検査用プローブと回路基板の導体パターンとの間の静電容量を測定して、測定した静電容量に基づく非接触検査を所定の電気的検査として行うことにより、静電容量測定型検査用プローブと回路基板とが弾性薄膜の厚み分だけ常に離間するため、静電容量測定型検査用プローブと、回路基板の導体パターンとの間の静電容量を正確に測定することができる。
【図面の簡単な説明】
【図1】本発明の実施の形態に係る回路基板検査装置1の構成を示す構成図である。
【図2】回路基板検査装置1および回路基板Pの側面断面図である。
【図3】基板保持機構2に載置状態の回路基板Pを基板保持用フィルム3で覆っている状態の側面断面図である。
【図4】図3の状態における回路基板Pの反りを矯正しつつ、所定の検査位置に回路基板Pを保持した状態の側面断面図である。
【図5】図4の状態の基板保持機構2、回路基板P、基板保持用フィルム3および検査用プローブ6,7の先端部の拡大断面図である。
【図6】検査対象の一例である回路基板Pの断面図である。
【図7】従来の回路基板検査装置31の構成を示す構成図である。
【図8】回路基板検査装置31および回路基板Pの側面断面図である。
【符号の説明】
1 回路基板検査装置
2 基板保持機構
3 基板保持用フィルム
4 フィルム搬送機構
11 載置台
13 エアポンプ
P 回路基板
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a circuit board inspection method for performing a predetermined electrical inspection in a state where a circuit board placed on a suction type substrate mounting table is sucked by a suction means and held at a predetermined inspection position, and the circuit board inspection thereof The present invention relates to a circuit board inspection apparatus configured to execute the method.
[0002]
[Prior art]
As an inspection apparatus configured to execute this type of circuit board inspection method, a circuit board inspection apparatus 31 shown in FIGS. 7 and 8 is conventionally known. The circuit board inspection apparatus 31 includes a substrate holding mechanism 2 for holding the circuit board P at a predetermined inspection position, and inspection probes 6 attached to the moving mechanisms 5a and 5b via probe fixtures 6a and 7a. 7, a control unit 38 that performs operation control of the substrate holding mechanism 2 and the moving mechanisms 5 a and 5 b and an inspection process via the inspection probes 6 and 7, and a RAM 9 that temporarily stores calculation results of the control unit 38. And a ROM 40 that stores an operation program of the control unit 38. 8, the substrate holding mechanism 2 includes a suction-type mounting table 11 having a plurality of suction ports 11a, 11a,... Formed on the upper surface and a suction port 11b formed on the side surface, and a mounting table. 11 is provided with a porous insulating sheet 12 affixed to the upper surface of 11 and an air pump 13 (see FIG. 7) that is connected to the suction port 11b of the mounting table 11 and exhausts the air in the internal space S.
[0003]
On the other hand, as shown in FIG. 6, the circuit board P is configured by forming conductor patterns 22, 22,.., 23, 23,. In this case, the conductor patterns 22, 22,..., 23, 23,... Are electrically connected by through holes 24, 24,.
[0004]
When the circuit board P is inspected using the circuit board inspection apparatus 31, first, the circuit board P is mounted on the porous insulating sheet 12 in the mounting table 11. Next, according to control of the control part 38, the air pump 13 sucks out the air of the internal space S in the mounting base 11 through the suction port 11b. Accordingly, the air between the circuit board P and the board holding mechanism 2 passes through the fine holes of the porous insulating sheet 12, and is then sucked into the internal space S through the suction ports 11a, 11a,. Thus, the circuit board P is sucked toward the mounting table 11 and is held at a predetermined inspection position. Next, the moving mechanisms 5a and 5b move the inspection probes 6 and 7 above the conductor patterns 22 and 22 to be inspected formed on the surface Pa of the circuit board P under the control of the control unit 38, respectively. Subsequently, the control unit 38 drives the moving mechanisms 5 a and 5 b to move the inspection probes 6 and 7 downward, thereby bringing the tip portions of the inspection probes 6 and 7 into contact with the conductor patterns 22 and 22. Thereafter, the control unit 38 outputs a predetermined inspection signal between the conductor patterns 22 and 22 via the inspection probes 6 and 7, thereby inspecting whether there is a disconnection or a short circuit. The quality of the circuit board P is determined by sequentially executing this electrical inspection for all of the conductor patterns 22, 22,..., 23, 23,.
[0005]
[Problems to be solved by the invention]
However, the conventional circuit board inspection method has the following problems. In other words, in the conventional circuit board inspection apparatus 31, the circuit board P is sucked by the air pump 13 to hold the circuit board P to be inspected at a predetermined inspection position on the mounting table 11. However, when the circuit board P is greatly warped, the air around the circuit board P is sucked through the gap formed between the circuit board P and the porous insulating sheet 12 when sucked by the air pump 13. End up. For this reason, the conventional circuit board inspection apparatus 31 has a problem in that it is difficult to reliably hold the circuit board P in a predetermined inspection position as a result of weakening the force of attracting the circuit board P. In this case, the circuit board P whose center part protrudes upward and the outer edge part warps so as to contact the porous insulating sheet 12, the circuit board P on which many through holes 24 are formed, and a large-diameter hole for installing electronic components. Even in the case of a circuit board on which is formed, the air on the surface Pa side of the circuit board P is sucked through the through hole 24, the large-diameter hole, etc., and as a result, the suction force is reduced, resulting in a predetermined inspection position. It becomes difficult to hold the circuit board P. Further, when the inspection probes 6 and 7 are brought into contact with the circuit board P being warped, there is a possibility that the tip portions thereof are strongly pressed against the conductor patterns 22, 22... In addition, there is a problem that the inspection probes 6 and 7 may be damaged.
[0006]
The present invention has been made in view of such problems, and can perform a predetermined electrical inspection with the circuit board securely held at a predetermined inspection position while correcting the warp of the circuit board to be inspected. It is a main object to provide a circuit board inspection method and a circuit board inspection apparatus.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the circuit board inspection method according to claim 1 is characterized in that the circuit board to be inspected is placed on the suction type substrate mounting table, and the circuit board in a state of being placed on the suction type substrate mounting table is insulated. After covering with an elastic thin film made of material, the circuit board is held at a predetermined inspection position on the suction type substrate mounting table by sucking with a suction means through the suction type substrate mounting table, and in that state with respect to the circuit board a circuit board inspection method for performing a predetermined electrical test, the capacitance measurement type inspection probe is brought into contact with the circuit board via the elastic thin film capacitance measurement type inspection probe and the circuit board conductive pattern The non-contact inspection based on the measured electrostatic capacitance is performed as a predetermined electrical inspection .
[0009]
Circuit board inspection method according to claim 2, wherein, in the circuit board inspection method according to claim 1 Symbol placement, is characterized by using a silicone rubber as the elastic film.
[0010]
A circuit board inspection apparatus according to a third aspect is a circuit board inspection apparatus configured to be able to execute the circuit board inspection method according to the first or second aspect , comprising a capacitance measuring type inspection probe, A capacitance measurement type inspection probe is brought into contact with the circuit board via an elastic thin film, and the capacitance between the capacitance measurement type inspection probe and the conductor pattern of the circuit board is measured. The non-contact inspection based on the above is performed as a predetermined electrical inspection .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, with reference to the accompanying drawings, illustrating the embodiments of the preferred invention of the circuit board testing method and a circuit board inspection apparatus. In addition, about the same component as the conventional circuit board test | inspection apparatus 31, and the circuit board P of test object, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.
[0012]
First, the configuration of a circuit board inspection apparatus 1 configured to execute the circuit board inspection method of the present invention will be described with reference to FIGS.
[0013]
As shown in FIG. 1, the circuit board inspection apparatus 1 includes a substrate holding mechanism 2, a substrate holding film 3, a film transport mechanism 4, moving mechanisms 5 a and 5 b, inspection probes 6 and 7, a control unit 8, a RAM 9 and a ROM 10. It is configured with. As shown in FIG. 2, the substrate holding mechanism 2 includes a mounting table 11 corresponding to the suction type mounting table in the present invention, a porous insulating sheet 12 affixed to the upper surface of the mounting table 11, and a suction means in the present invention. And an air pump 13 that sucks out the air in the internal space S of the mounting table 11. The substrate holding film 3 corresponds to the elastic thin film in the present invention, and is, for example, a silicon rubber having a thickness of about 30 μm to 100 μm, and is formed to have a size that is substantially the same as the upper surface of the mounting table 11.
[0014]
The film transport mechanism 4 includes a moving mechanism 4a, an ejector 4b, and an air pump 4c, and transports the substrate holding film 3 onto the circuit board P from a predetermined retracted position. In this case, as shown in FIG. 2, the ejector 4b is formed in a cylindrical shape as a whole, and is attached to the moving mechanism 4a so that the opening portion faces downward. The ejector 4b discharges the air sent from the air pump 4c toward the substrate holding film 3 at high speed, thereby utilizing the negative pressure generated between the substrate holding film 3 and the substrate holding film 3. Is held in a non-contact manner. The control unit 8 executes inspection processing based on drive control of the air pumps 4 c and 13 and the moving mechanisms 4 a, 5 a and 5 b and inspection signals input via the inspection probes 6 and 7. The RAM 9 temporarily stores the calculation result of the control unit 8, and the ROM 10 stores the operation program of the control unit 8.
[0015]
Next, an inspection method for the circuit board P using the circuit board inspection apparatus 1 will be described with reference to FIGS.
[0016]
First, as shown in FIG. 2, the circuit board P to be inspected is placed on the porous insulating sheet 12 of the substrate holding mechanism 2. In this state, a gap R caused by the warp of the circuit board P is generated between the back surface Pb of the circuit board P and the porous insulating sheet 12. Next, the control unit 8 drives the air pump 4c of the film transport mechanism 4 to pump the air toward the ejector 4b. As a result, air is blown from the ejector 4b toward the substrate holding film 3 at a high speed, and the substrate holding film 3 is held by the ejector 4b with a negative pressure generated at this time. Next, the control unit 8 controls the movement of the moving mechanism 4a to move the substrate holding film 3 to above the circuit board P, and stops driving the air pump 4c in this state. Thereby, as shown in FIG. 3, the substrate holding film 3 is disposed on the surface Pa of the circuit board P so as to cover the circuit board P. In this case, since the silicon rubber as the material of the substrate holding film 3 is excellent in insulation, even if it is in contact with the front surface Pa or the back surface Pb of the circuit board P, the conductor patterns 22, 22,. The insulation state between 23, 23,.
[0017]
Next, the air pump 13 sucks out air in the internal space S of the mounting table 11 under the control of the control unit 8. Accordingly, the air between the substrate holding film 3 and the circuit board P is sucked into the gap R through the through holes 24 of the circuit board P, and further, fine pores of the porous insulating sheet 12 and The air is sucked into the internal space S through the suction ports 11a, 11a. In this case, in this circuit board inspection apparatus 1, the porous insulating sheet 12 affixed on the mounting table 11 applies the suction force generated in the vicinity of the suction ports 11 a, 11 a. Homogenize so as to suck. As a result, the substrate holding film 3 adheres to the surface Pa of the circuit board P and the porous insulating sheet 12 around the circuit board P. In this state, the through holes 24, 24,... Of the circuit board P are closed by the substrate holding film 3, so that the air on the surface Pa side of the circuit board P enters through the through holes 24, 24,. Effectively blocked. Therefore, by further sucking in this state, the air in the gap R is sucked into the internal space S, whereby the circuit board P is applied to the porous insulating sheet 12 while its warpage is corrected as shown in FIG. By being in close contact, it is reliably held at a predetermined inspection position on the mounting table 11.
[0018]
Next, the control unit 8 controls the movement mechanisms 5a and 5b to move the inspection probes 6 and 7 above the conductor patterns 22 and 22 to be inspected. Subsequently, the control unit 8 drives the moving mechanisms 5a and 5b to move the inspection probes 6 and 7 downward so that the tip portions of the inspection probes 6 and 7 are used for holding the substrate as shown in FIG. It penetrates the film 3 and is brought into contact with the conductor patterns 22 and 22, respectively. In this case, since the substrate holding film 3 is very thin, the inspection probes 6 and 7 easily penetrate the substrate holding film 3. In addition, since the substrate holding film 3 has elasticity, the inspection probes 6 and 7 are easily penetrated without being greatly broken. Further, the through hole formed in the substrate holding film 3 during penetration is naturally blocked by removing the inspection probes 6 and 7 because the substrate holding film 3 is an elastic material. Therefore, intrusion of air through the through hole is effectively prevented, and the substrate holding film 3 can be used repeatedly. Thereafter, the control unit 8 outputs a predetermined inspection signal between the conductor patterns 22 and 22 via the inspection probes 6 and 7, and based on the inspection signal input via the inspection probes 6 and 7. Perform a predetermined electrical test. The quality of the circuit board P is determined by sequentially executing this electrical inspection for all of the conductor patterns 22, 22,..., 23, 23,.
[0019]
In this way, in this circuit board inspection apparatus 1, the through holes 24, 24,... Of the circuit board P are closed by the board holding film 3 when the circuit board P is sucked by the air pump 13, so that the warp is corrected. The circuit board P can be reliably held at a predetermined inspection position on the mounting table 11. Therefore, the inspection probes 6 and 7 can always be brought into contact with the circuit board P with a constant urging force, so that the inspection probes 6 and 7 and the circuit board P can be prevented from being damaged. In this case, in this circuit board inspection apparatus 1, for example, even a circuit board having a large-diameter hole for installing an electronic component can completely close the large-diameter hole, so that the warp is corrected. However, it can be reliably held at a predetermined inspection position on the mounting table 11. Moreover, in this circuit board inspection apparatus 1, since the substrate holding film 3 is made of elastic silicon rubber, it is possible to effectively prevent tearing due to penetration of the inspection probes 6 and 7. Therefore, when a food wrapping film or the like is used, it is broken at the time of penetration and cannot be used repeatedly. In this circuit board inspection apparatus 1, one board holding film 3 is used repeatedly. Therefore, the running cost can be reduced.
[0020]
In addition , the material of the elastic thin film in the present invention is not limited to this, and various materials that are insulating materials and have elasticity can be employed. Also, an example has been described to perform the electrical inspection using an inspection probe 6 and 7 of contact touch type can also be applied to non-contact inspection method of using the capacitance measurement type inspection probe. In this case, since the capacitance measurement type inspection probe is brought into contact with the circuit board P, the capacitance measurement type inspection probe and the circuit board P are always separated by the thickness of the substrate holding film 3. The capacitance between the capacitance measurement type inspection probe and the conductor pattern 22 of the circuit board P can be accurately measured. Furthermore, in the embodiment of the present invention, the example of the film transport mechanism 4 that transports the substrate holding film 3 in a non-contact manner has been described. However, the transport mechanism in the present invention is not limited to this, and for example, for holding a substrate. A mechanism for gripping and transporting both ends of the film 3 and a mechanism for gripping and transporting an edge member disposed in advance on the outer edge portion of the substrate holding film 3 can also be employed.
[0021]
【The invention's effect】
As described above, according to the circuit board inspection method of the first aspect, after the circuit board placed on the suction-type board mounting table is covered with the elastic thin film made of an insulating material, the circuit board is sucked by the suction means. Even if it is a circuit board with a large-diameter hole for a warped circuit board, a large number of through-holes, and a large-diameter hole for electronic component installation by holding it in the inspection position, It can be reliably held at a predetermined inspection position. At the same time, the inspection probe and the circuit board can be prevented from being damaged. In addition, by measuring the capacitance between the capacitance-measuring type inspection probe and the conductor pattern of the circuit board, a non-contact inspection based on the measured capacitance is performed as a predetermined electrical inspection. Capacitance measurement type inspection probe and circuit board are always separated by the thickness of the elastic thin film, so the capacitance between the capacitance measurement type inspection probe and the circuit board conductor pattern is accurately measured. be able to.
[0023]
Furthermore, according to the circuit board inspection method of the second aspect , since the elastic thin film is made of silicon rubber, one elastic thin film can be used repeatedly, so that the running cost in the inspection can be reduced. In addition, the inspection probe can be penetrated reliably and easily.
[0024]
According to the circuit board inspection apparatus of claim 3 , the capacitance between the capacitance measurement type inspection probe and the conductor pattern of the circuit board is measured, and the non-contact based on the measured capacitance By conducting the inspection as a predetermined electrical inspection, the capacitance measurement type inspection probe and the circuit board are always separated by the thickness of the elastic thin film, so that the capacitance measurement type inspection probe and the circuit board conductor Capacitance between the pattern and the pattern can be accurately measured.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a configuration of a circuit board inspection apparatus 1 according to an embodiment of the present invention.
2 is a side cross-sectional view of the circuit board inspection apparatus 1 and the circuit board P. FIG.
3 is a side cross-sectional view of a state in which the circuit board P placed on the substrate holding mechanism 2 is covered with a substrate holding film 3. FIG.
4 is a side cross-sectional view of a state where the circuit board P is held at a predetermined inspection position while correcting the warp of the circuit board P in the state of FIG. 3;
5 is an enlarged cross-sectional view of the tip of the substrate holding mechanism 2, the circuit board P, the substrate holding film 3, and the inspection probes 6 and 7 in the state of FIG.
FIG. 6 is a cross-sectional view of a circuit board P which is an example of an inspection target.
7 is a configuration diagram showing a configuration of a conventional circuit board inspection apparatus 31. FIG.
8 is a side cross-sectional view of the circuit board inspection device 31 and the circuit board P. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Circuit board inspection apparatus 2 Substrate holding mechanism 3 Substrate holding film 4 Film transport mechanism 11 Mounting table 13 Air pump P Circuit board

Claims (3)

検査対象の回路基板を吸引型基板載置台上に載置し、前記吸引型基板載置台に載置した状態の前記回路基板を絶縁性素材製の弾性薄膜で覆った後、前記吸引型基板載置台を介して吸引手段で吸引することにより前記回路基板を当該吸引型基板載置台上の所定検査位置に保持させ、その状態で当該回路基板に対して所定の電気的検査を行う回路基板検査方法であって
静電容量測定型検査用プローブを前記弾性薄膜を介して前記回路基板に当接させて当該静電容量測定型検査用プローブと当該回路基板の導体パターンとの間の静電容量を測定して、当該測定した静電容量に基づく非接触検査を前記所定の電気的検査として行うことを特徴とする回路基板の検査方法。
A circuit board to be inspected is placed on a suction-type substrate placement table, and the circuit board in a state of being placed on the suction-type substrate placement table is covered with an elastic thin film made of an insulating material, and then the suction-type substrate placement A circuit board inspection method for holding the circuit board at a predetermined inspection position on the suction-type substrate mounting table by sucking with suction means through the mounting table, and performing a predetermined electrical inspection on the circuit board in that state Because
A capacitance measurement type inspection probe is brought into contact with the circuit board through the elastic thin film to measure the capacitance between the capacitance measurement type inspection probe and the conductor pattern of the circuit board. A circuit board inspection method , wherein a non-contact inspection based on the measured capacitance is performed as the predetermined electrical inspection.
前記弾性薄膜としてシリコンラバーを用いることを特徴とする請求項1記載の回路基板検査方法。Circuit board inspection method according to claim 1 Symbol mounting is characterized by using a silicone rubber as the elastic film. 請求項1または2記載の回路基板検査方法を実行可能に構成された回路基板検査装置であって、
静電容量測定型検査用プローブを備え、
前記静電容量測定型検査用プローブを前記弾性薄膜を介して前記回路基板に当接させて当該静電容量測定型検査用プローブと当該回路基板の導体パターンとの間の静電容量を測定して、当該測定した静電容量に基づく非接触検査を前記所定の電気的検査として行うことを特徴とする回路基板検査装置。
A circuit board inspection apparatus configured to execute the circuit board inspection method according to claim 1 or 2 ,
It has a capacitance measurement type inspection probe,
The capacitance measurement type inspection probe is brought into contact with the circuit board via the elastic thin film to measure the capacitance between the capacitance measurement type inspection probe and the conductor pattern of the circuit board. A circuit board inspection apparatus that performs non-contact inspection based on the measured capacitance as the predetermined electrical inspection.
JP2000043705A 2000-02-22 2000-02-22 Circuit board inspection method and circuit board inspection apparatus Expired - Lifetime JP4477183B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000043705A JP4477183B2 (en) 2000-02-22 2000-02-22 Circuit board inspection method and circuit board inspection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000043705A JP4477183B2 (en) 2000-02-22 2000-02-22 Circuit board inspection method and circuit board inspection apparatus

Publications (2)

Publication Number Publication Date
JP2001235500A JP2001235500A (en) 2001-08-31
JP4477183B2 true JP4477183B2 (en) 2010-06-09

Family

ID=18566576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000043705A Expired - Lifetime JP4477183B2 (en) 2000-02-22 2000-02-22 Circuit board inspection method and circuit board inspection apparatus

Country Status (1)

Country Link
JP (1) JP4477183B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100362351C (en) * 2004-08-27 2008-01-16 京元电子股份有限公司 Device for taking and placing electronic element to be tested without suction head
JP4576294B2 (en) * 2005-06-22 2010-11-04 日置電機株式会社 Circuit board inspection equipment
JP4685529B2 (en) * 2005-07-07 2011-05-18 日置電機株式会社 Circuit board inspection equipment
JP5036596B2 (en) * 2008-03-03 2012-09-26 東京応化工業株式会社 Adsorption device
JP2010217105A (en) * 2009-03-18 2010-09-30 Taiyo Kogyo Co Ltd Flying checking contact probe retaining structure and flying inspection apparatus of circuit board

Also Published As

Publication number Publication date
JP2001235500A (en) 2001-08-31

Similar Documents

Publication Publication Date Title
JP4477183B2 (en) Circuit board inspection method and circuit board inspection apparatus
JP2001296325A (en) Circuit board inspection method and circuit board inspection apparatus
JP6564345B2 (en) Electrical inspection method and electrical inspection apparatus
TWI354796B (en) Probe unit and inspection apparatus
TWM530955U (en) Test device for stacked package testing
JP4678987B2 (en) Circuit board suction device and circuit board inspection device
JPH10206480A (en) Method for supporting conductor circuit board in conductor circuit board inspecting apparatus
JP4139738B2 (en) Circuit board inspection equipment
JP3252664B2 (en) Electronic component direction determination method and direction determination device
JP4233904B2 (en) Board inspection equipment
JP2001013190A (en) Circuit board inspection equipment
JP3524049B2 (en) Wiring pattern inspection method
KR100771382B1 (en) Substrate processing method and apparatus
JP2000241508A (en) Substrate inspection device and substrate inspection method
JP2004006544A (en) Printed circuit board and printed circuit board inspection equipment
JP3894670B2 (en) Inspection jig connection method
JP3840839B2 (en) Substrate supply device
KR200420972Y1 (en) Printed Circuit Board Inspector with Simplified Clamp Structure
JP2009063342A (en) Device and method for inspecting wiring board
JPH09222459A (en) Ic tester
JP2001284441A (en) Flexible holder for substrate and substrate jig structure using the same
TW202445148A (en) Detection jig and its pressing head for a fingerprint sensing chip
JPH11242070A (en) Board inspection apparatus
JP2002202335A (en) Circuit board inspection equipment
JPH06167544A (en) Tester of printed board and electronic part

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070214

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090410

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090414

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090610

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090825

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100309

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100311

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4477183

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130319

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130319

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150319

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term