JPH0653293A - プローブステーション - Google Patents
プローブステーションInfo
- Publication number
- JPH0653293A JPH0653293A JP5135963A JP13596393A JPH0653293A JP H0653293 A JPH0653293 A JP H0653293A JP 5135963 A JP5135963 A JP 5135963A JP 13596393 A JP13596393 A JP 13596393A JP H0653293 A JPH0653293 A JP H0653293A
- Authority
- JP
- Japan
- Prior art keywords
- connector
- chuck assembly
- elements
- probe station
- probe
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2886—Features relating to contacting the IC under test, e.g. probe heads; chucks
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/06705—Apparatus for holding or moving single probes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/06794—Devices for sensing when probes are in contact, or in position to contact, with measured object
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/073—Multiple probes
- G01R1/07392—Multiple probes manipulating each probe element or tip individually
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/18—Screening arrangements against electric or magnetic fields, e.g. against earth's field
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2886—Features relating to contacting the IC under test, e.g. probe heads; chucks
- G01R31/2887—Features relating to contacting the IC under test, e.g. probe heads; chucks involving moving the probe head or the IC under test; docking stations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/70—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping
- H10P72/76—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using mechanical means, e.g. clamps or pinches
- H10P72/7604—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using mechanical means, e.g. clamps or pinches the wafers being placed on a susceptor, stage or support
- H10P72/7624—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using mechanical means, e.g. clamps or pinches the wafers being placed on a susceptor, stage or support characterised by the mechanical construction of the susceptor, stage or support
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
0の両方のために、集積された、即座に使用可能の保護
性の、Kelvin接続及び遮蔽性システムをもつプロ
ーブステーションを提供して従来の欠点を解消する。 【構成】 プローブステーションが低電流測定用のステ
ーションの使用を容易にする集積された保護システム
と、ライン抵抗に起因する電圧ロスを除くための集積さ
れたKelvin接続を備える。ステーションは少なく
とも3つのチャック組立体素子からなるチャック組立体
20をもち、第1素子はテスト装置を支持し、その下の
第2素子は漏洩電流を減少させる保護体として作用す
る。前記素子は互いにかつ下にある第3素子である支持
構造から電気絶縁される。
Description
スト装置の高精度の低電流・低電圧測定をなすためのプ
ローブステーションに関し、詳細には、電流漏洩を防止
するための保護システムと、ライン抵抗によって生じる
電圧ロスを排除するKelvin接続システムと電磁気
干渉(EMI)遮蔽システムとをもつプローブステーシ
ョンに関するものである。
めの保護技術、低電圧測定のためのKelvin接続の
使用及びEMI遮蔽の装備はすべて周知であり、技術文
献中で広く議論されている。例えば、1990年11月
号のEvaluation Engineeringの
150〜153頁の“低電流/低電圧パラメトリック・
テスティング”と題するWilliam Knauer
の論文を参照されたい。また、Hewlett−Pac
kardの“Application Note356
−HP4142B Modular DC Sourc
e/Monitor Practical Appli
cation” (1987)の頁1〜4、及びHew
lett−PackardのH−P Model 42
84APrecision LCR Meter,Op
eration Maual(1991)の頁2〜1、
6〜9及び6〜15を参照されたい。
又は回路を包囲した又はさもなければそれに密接した導
体は漏洩電流をを減少させるため前記ライン又は回路と
同じ電位に維持され、それ故低電流測定を正確に行うこ
とができる。
じる電圧ロスを補償する。前記ライン抵抗はさもなけれ
ば低電圧測定に誤差を生ぜしめる。前記補償は電源ライ
ンと測定ライン(これらは一般に夫々“フォース”及び
“センス”ラインとも称される)をテスト装置にできる
だけ接近した相互接続点(Kelvin接続)に提供す
ることによって達成される。測定ラインに大電流の発生
又はその結果生じる電圧低下を生じることなく電圧を正
確に検出するために、高インピーダンス電圧計が測定ラ
インを通してこの点に接続される。このことによって誤
差は排除される。その誤差は、もし電圧計が電源ライン
を通して電圧を検出するのであるならば、電源ライン中
に生じる電圧低下に起因して、生じるものである。
elvin接続及びEMI遮蔽技法でテストを行うため
に使用された。しかし、保護とKelvin接続手法に
要求されるかかるプローブステーションの通常の調整に
は時間がかかり、或る場合には有効性が限定される。例
えば、IEEE Transactions onIn
strumentation and Measure
ment、1989年12月、38巻、6号、1088
〜1093頁中に記載された“A Compact S
elf−Shielding Prober for
Accurate of On−Wafer Elec
tron Devices”と称するYousuke
Yamamotoの論文中に、プローブカードとテスト
装置を支持するチャック組立体上に取付けられた夫々の
着脱自在の3軸コネクタをもつプローブステーションが
示されている。3軸コネクタの中間コネクタ素子は通常
は保護の目的に使用される。しかし、上記論文中に示さ
れたチャック組立体はチャックとシールドをもつに過ぎ
ず、中間コネクタ素子を接続できる分離した保護構造は
もたない。従って、保護されそして遮蔽されたチャック
組立体を得るためには、かかるステーションの変更に大
きな時間を費やす必要がある。他方、プローブカード上
のプローブは保護と遮蔽の両方がなされる。しかし、テ
スト装置の異なった接触パターンに適応させるためその
保護体及びシールドと一緒に各プローブを他のプローブ
から独立して移動させる手段はなく、従ってプローブス
テーションの順応性を犠牲にすることになる。また、チ
ャック組立体上にKelvin接続のための備えがな
い。これは示された単一の3軸コネクタより多くのコネ
クタを必要とする。
ック組立体は入手することができる。例えば、米国マサ
チューセッツ州在のTemptronic Corpo
ration が熱チャック組立体を市販しており、そ
の組立体の頂上にテスト装置用の“追加の”支持面が取
付けられて、銅の保護層が前記追加の面と、絶縁材料の
夫々のシートによって各々から絶縁されたその下にある
チャック組立体との間に挿入されている。この構造によ
って、信号ラインを前記追加の面に半田付けし、保護ラ
インを前記銅保護層に半田付けし、接地ラインをシール
ドとして役立つその下にあるチャック組立体に半田付け
することが可能になる。しかし、かかる配線は時間を費
やす調整を必要とし、もしKelvin接続も必要であ
れば、特にそうである。更に、追加の面とその下にある
チャック組立体から銅の保護層を絶縁するためにシート
絶縁体を使用するので、測定すべき電流が低レベルであ
る故に漏洩電流を最少にすることが望まれるが、夫々の
素子間の誘電率をそれ程低くすることはできない。
プローブと、チャック組立体の両方のために、集積され
た、即座に使用可能の保護性の、Kelvin接続及び
遮蔽性システムをもつプローブステーションを提供する
ことによって先行技術のプローブステーションの前述の
欠点を解消することにある。
め、本発明は個別に可動のプローブとチャック組立体の
両方のために、集積された即座に使用可能の保護性の、
Kelvin接続及び遮蔽性システムをもつプローブス
テーションを提供する。チャック組立体は互いに電気絶
縁されかつそれらの間でアプローチ軸に沿ってプローブ
から次第に大きくなる距離をおいて位置した少なくとも
第1、第2及び第3のチャック組立体素子を備える。少
なくとも1つの着脱自在の電気コネクタ組立体が第1と
第2のチャック組立体に番い関係に接続された夫々のコ
ネクタ素子をもつチャック組立体上に設けられて、即時
使用性のためにコネクタ組立体に保護ケーブルを簡単に
着脱自在に接続することだけを必要とする即座に使用可
能の保護システムを提供する。
ネクタ組立体は、チャック組立体上に即座に使用可能の
保護されたKelvin接続を提供するように、第1と
第2のチャック組立体素子に第1コネクタ組立体のそれ
らと並列に接続された対応するコネクタ素子をもち、こ
のチャック組立体は第2コネクタ組立体への第2保護ケ
ーブルの簡単に着脱自在な接続によって即座に作用可能
となる。かくして、1方のケーブルが保護された電源ラ
インとして働き、他方が保護された測定ラインとして働
く。
ャック組立体素子が連続誘電性シートによるよりはむし
ろ誘電性スペーサの分散パターンによって互いに電気絶
縁されるという事実によって最少にされ、従って大きな
空気間隙が素子間の間隙中の誘電率を減少させるよう夫
々のチャック組立体間に設けられる。
用可能の保護された単一ラインケーブルとKelvin
接続ケーブルのみならず、各プローブのケーブルのため
の夫々のシールドをも備え、シールドは各プローブと一
緒に個別に独立して可動である。
についての以下の説明から明らかになるであろう
ーションの1実施例はベース10(一部を図示)を備
え、前記ベースは幾つかのジャック14a、14b、1
4c、14dによってプラテン12を支持し、前記ジャ
ックは以下説明するための小さい増分(ほぼ10分の1
インチ)でベースに対して垂直にプラテンを選択的に上
昇、下降させる。また、プローブステーションのベース
10により支持されるのは方形プランジヤ18をもつ電
動化ポジショナ16であり、前記プランジヤはウエハー
又は他のテスト装置を支持するための可動のチャック組
立体20を支持する。チャック組立体20はプラテン1
2中の大きな開口22を自由に通過する。前記開口によ
って、チャック組立体はX、Y、Z軸線に沿って、即ち
2つの互いに直角をなす軸線XとYに沿って水平にそし
てZ軸線に沿って垂直にポジショナ16によってプラテ
ンとは独立して移動することができる。同様に、プラテ
ン12は、ジャッキ14によって垂直に移動するとき、
チャック組立体20及びポジショナ16とは独立して移
動する。
複数の個別のプローブポジショナ24(唯1つだけを図
示する)であり、各ポジショナはチャック組立体20の
頂上に取付けたウエハー及び他のテスト装置に接触する
ための夫々のプローブ30を支持するプローブホルダー
28を取付ける延長部材26をもつ。プローブポジショ
ナ24は、チャック組立体20に対して夫々X、Y及び
Z軸線に沿ってプローブホルダー28の、従ってプロー
ブ30の位置を調節するためのマイクロメータ調節装置
34、36、38をもつ。Z軸線は、プローブホルダー
28とチャック組立体20間の“アプローチ軸”と漠然
と称されるものの典型例である。垂直でもなくまた直線
でもないアプローチ方向(これに沿ってプローブチップ
とウエハー又は他のテスト装置が互いに接触させられ
る)は用語“アプローチ軸”の意味の範囲内に含まれる
ものとする。他のマイクロメータ調節装置40はチャッ
ク組立体20によって支持されたされたウエハー又は他
のテスト装置に対してプローブの平面性を調節するため
に、プローブホルダー28を調節可能に傾斜させる。各
々が夫々のプローブを支持している12個の個別のプロ
ーブポジショナ24は車輪のスポークの様にチャック組
立体に向かって径方向に収束するように、チャック組立
体20の回りでプラテン12上に配置される。かかる配
置では、各個別のポジショナ24はX、Y及びZ方向に
夫々のプローブを独立して調節することができ、一方、
ジャック14はプラテン12を、従ってポジショナ24
のすべてとそれらの夫々のプローブを一緒に上昇又は下
降させるために駆動される。
た上部ボックス部分44とベース10に固定された下部
ボックス部分44からなる。両部分はEMI遮蔽をなす
ために鋼又は他の適当な導電性材料から作られる。ジャ
ック14がプラテン12を上昇又は下降させるために作
動されるとき、2つのボックス部分42と44間の小さ
い垂直移動に適応させるために、好適には銀又はカーボ
ン含浸シリコンからなる導電性の弾性発泡材ガスケット
46が、EMIの、実質上密封性の軽量のシールが2つ
のボックス部分42と44間の相対的垂直移動にも拘ら
ずすべて維持されるように、包囲体の前と下部部分44
とプラテン12間の係合する接合部に周囲方向に挿入さ
れる。上部ボックス部分42がプラテン12に固定され
るにも拘らず同様のガスケット47が密封作用を最大限
にするため好適には部分42とプラテン頂部間に挿入さ
れる。
ス部分42は49a、49bの如き8個の側部パネルを
もつ八角形の鋼ボックス48を備え、前記パネルを通し
て夫々のプローブポジショナ24の延長部材26は貫通
移動できる。各パネルは中空ハウジングをもち、前記ハ
ウジング内に、前記ガスケット材料と同様な弾性発泡材
の夫々のシート50が置かれる。52の如きスリットが
各パネルの内面と外面に形成したスロット54と整列し
て発泡材中に部分的に垂直にカットされており、前記ス
ロットを通して夫々のプローブポジショナ24の夫々の
延長部材26が通過移動できる。スリット付き発泡材は
各プローブポジショナの延長部材26のX、Y及びZ軸
移動を許す一方、EMIの、実質上密封性のかつ軽量
の、包囲体によって提供されるシールを維持する。4個
のパネルにおいて、XとY軸移動の大きな範囲を可能な
らしめるために、発泡材シート50はスロット54をも
つ1対の鋼プレート55間に挟まれる。前記プレートは
パネルハウジングの内面と外面中の大きなスロット56
によって包囲される移動範囲を通してパネルハウジング
内で横に摺動できる。
明な密封窓60をもつ円形の監視開口58を備える。ブ
ラケット62は開口付き摺動シャッタ64を保持し、選
択的に窓を通して光を通過させたり阻止させたりする。
CRTモニタに接続された立体鏡(図示せず)が、据え
付け又は操作中に適切なプレート配置をするためにウエ
ハー又は他のテスト装置及びプレートチップを拡大表示
させるために窓の上に置かれる。別法として、窓60を
除去し、発泡材ガスケットによって囲まれた顕微鏡レン
ズ(図示せず)を監視開口58を通して挿入し、発泡材
がEMI、密封性及び光の密封を行うようにすることが
できる。
ヒンジ連結した鋼ドア68をもち、前記ドアは図2Aに
示すように、ヒンジ70のピボット軸の回りに外方へ旋
回する。前記ヒンジはドアを上部ボックス部分42の頂
部に向かって下方へ片寄らせ、それが上部ボックス部分
の頂部と緊密な重なって摺動する周囲シール68aを形
成するようになす。ドアが開き、チャック組立体20が
図2Aに示すドア開口の下でポジショナ16によって動
かされると、チャック組立体はローディングとアンロー
ディングのために接近可能となる。
密封性は、互いに上下関係に摺動可能に重なった一連の
4個の密封プレート72、74、76、78を備えたこ
とによって、電動化ポジショナ16によって位置調整運
動を通じて維持される。プレートの寸法は夫々のプレー
ト72、74、76、78中に形成した中心開口72
a、74a、76a、78aと下部ボックス部分44の
底部44aに形成した開口79aの夫々の寸法と同様
に、頂部から底部へ行くにつれて次第に増大する。頂部
プレート72の中心開口72aは垂直に可動のプランジ
ヤ18の担持ハウジング18aの回りに密接する。下向
きの進行方向において次のプレート74は上方へ突出す
る周縁74bをもつ。この周縁はプレート72がプレー
ト74の頂部を横切って摺動することができる範囲を限
定する。プレート74中の中心開口74aは、ポジショ
ナ16がプランジヤ18とその担持ハウジング18a
を、頂部プレート72の縁がプレート74の周縁74b
に衝合するまで、XとY軸に沿って横に移動させること
ができる寸法をもつ。しかし、開口74aの寸法はかか
る衝合が起こったとき、頂部プレート72によって露出
させるには小さ過ぎ、それ故、プランジヤ18とその担
持ハウジングがXとY軸に沿って移動するにも拘らず、
プレート72と74の間にシールが維持される。プレー
ト72が周縁74bと衝合する方向のプランジヤ18と
担持ハウジングの後続の移動により次の下にあるプレー
ト76の周縁76bに向かってプレート74は摺動す
る。プレート76中の中心開口76aはプレート74を
周縁76bと衝合させる程に十分に大きいが、プレート
74が開口76aを露出させない程に十分に小さく、か
くして、同様にプレート74と76間にシールを維持す
ることができる。同じ方向にプランジヤ18と担持ハウ
ジングを更に引き続き移動させると、それらの下にある
プランジヤに対してプレート76、78を同様に摺動さ
せてボックス部分44の周縁78bと側部に夫々衝合さ
せるが、開口78a、79aを露出させることはない。
次第に寸法が増大する中心開口と摺動プレートの組合せ
により、XとY軸に沿うプランジヤ18の全範囲の移動
を可能となすが、その間かかる位置調整移動にも拘らず
包囲体を密封状態に維持することができる。この構造に
より与えられるEMI密封はポジショナ16の電気モー
タに対してさえも有効である。というのは、前記モータ
は摺動プレートの下に置かれるからである。
0は環境制御包囲体と共に又はそれ無しの何れでも使用
できる独特の構造をもつ。プランジヤ18は調節プレー
ト79を支持し、前記プレートは、アプローチ軸に沿っ
てプローブから次第に大きくなる距離をおいた位置に置
かれた第1、第2及び第3のチャック組立体素子80、
81、83を夫々支持する。素子83は導電性の方形ス
テージ又はシールド83とし、前記シールドは円形の導
電性素子80、81を着脱自在に据え付ける。素子80
は垂直開口84の列をもつ平らな内向きのウエハー支持
面82をもつ。これらの開口はOリング88により分離
した夫々のチャンバと連通する。前記チャンバは、個別
に制御される真空弁(図示せず)を介して真空源と連通
する異なった真空ライン90a、90b、90c(図
6)に個別に連結される。夫々の真空ラインは夫々のチ
ャンバとそれらの開口を、ウエハーを保持するために真
空源に連結するか、又は慣例の手法でウエハーを釈放す
るために真空源から前記開口を隔離させる。夫々のチャ
ンバとそれらの対応する開口を個別に操作できることに
よりチャックは異なった直径のウエハーを保持すること
が可能となる。
は他のテスト装置が同時に素子80によって支持されて
いる間に接続基板と校正基板を支持するために、92、
94の如き補助チャックが素子80、81とは独立して
ねじ(図示せず)によって素子83のかど部に着脱自在
に取付けられる。各補助チャック92、94は素子80
の面82と平行関係にあるそれ自身の個別の内向き平面
100、102を夫々もつ。真空開口104は各補助チ
ャックの本体内の夫々のチャンバとの連通部から面10
0と102を通して突き出る。これらのチャンバの各々
は個別の真空ラインと個別の独立して作動される真空弁
(図示せず)を介して真空源と連通する。前記弁の各々
は素子80の開口の作用とは独立して真空源に対して開
口の夫々の組を選択的に連結し又は隔離し、ウエハー又
は他のテスト装置とは独立して夫々の面100と102
上に置かれた接続基板又は校正基板を選択的に保持又は
釈放するようになす。選択自由の金属シールド106は
他の素子80、81と補助チャック92、94を取り囲
むために素子83の縁から上方へ突き出る。
追加のチャック組立体素子79のすべては、たとえ導電
性金属からなっていて、金属ねじ96によって着脱自在
に接続されていても、互いに電気的に絶縁される。図3
B、3Aに示すように、電気絶縁は、弾性の誘電性Oリ
ング88に加えて、誘電性スペーサ85と誘電性座金8
6を備えることによってもたらされる。これらは、ねじ
96が2つの素子のうちの下部の素子中の大き過ぎる開
口を通過するという事実と組み合わさって、所望の絶縁
を与える。前記各ねじは互いに接合してねじのシャンク
部と下部素子間の電気接触を防止する。図3Bから明ら
かなように、誘電性スペーサ85は、相互連結されたチ
ャック組立体の対向面領域の小さい部分のみにわたって
延在し、それによって夫々の区域の大部分にわたって対
向面間に空気間隙を残す。かかる空気間隙は夫々のチャ
ック組立体素子間のスぺース中の誘電率を最小にし、そ
れによってそれらの間のキャパシタンスと1素子から他
の素子へ漏れる電流量をそれに応じて最小にする。好適
には、スペーサと座金85、86は夫々、高い寸法安定
性及び高い容積抵抗率と一致する最低の可能な誘電率を
もつ材料から構成される。スペーサと座金に適した材料
はガラス又はE.I.DuPontによりDelrin
の商標名で市販されているアセタールホモポリマーであ
る。
0は108、110で示す1対の着脱自在の電気コネク
タ組立体を含み、その各々は互いに電気絶縁された少な
くとも2つの導電性コネクタ素子108a、108bと
110a、110bをもち、コネクタ素子108bと1
10bはコネクタ素子108aをその保護体として好適
には同軸に取り囲む。所望に応じて、コネクタ組立体1
08と110は、図7に示すように、夫々のコネクタ素
子108b、110bを取り囲む夫々の外部シールド1
08cを含むような3軸構成となすことができる。外部
シールド108cと110cは、所望に応じて、遮蔽ボ
ックス112を介してチャック組立体素子83に電気接
続されるが、かかる電気接続は特に包囲するEMI遮蔽
包囲体42、44を考慮すれば選択自由となる。何れに
しても、夫々のコネクタ素子108a、110aは、チ
ャック組立体素子80の湾曲縁にねじ114bと114
cによって湾曲接触面114aに沿って番い関係に着脱
自在に接続されたコネクタプレート114に並列に電気
接続される。反対に、コネクタ素子108bと110b
は素子81に同様に番い関係に着脱自在に接続されたコ
ネクタプレート116に並列に接続される。前記コネク
タ素子はボックス112中の方形開口112aを自由に
貫通し、互いに電気絶縁されるのと同様に、ボックス1
12から、それ故素子83から電気絶縁される。止めね
じ118はコネクタ素子を夫々のコネクタプレート11
4、116に着脱自在に締着する。
120は、それらの3軸の着脱自在コネクタ122と1
24の如く、夫々の着脱自在の電気コネクタ組立体10
8と110の一部をなす。3軸コネクタ122、124
の外部シールドが包囲体に電気接続されるように、前記
コネクタ122、124は環境制御包囲体の下部分44
の壁を貫通する。他の3軸ケーブル122a、124a
は、テストの用途に応じてHewlett−Packa
rd4142BモジュラーDC電源/モニター又はHe
wlett−Packard4284A精密LCRメー
ターの如き適当なテスト器具からコネクタ122と12
4に着脱自在に接続できる。もしケーブル118、12
0が単に同軸ケーブルか又は2つの導体のみをもつ他の
型式のケーブルであれば、1方の導体は夫々のコネクタ
122又は124の内部(単一の)コネクタを夫々のコ
ネクタ素子108a又は110aと相互接続し、一方、
他方の導体は夫々のコネクタ122又は124の中間
(保護)コネクタ素子を夫々のコネクタ素子108b、
110bと相互接続する。
108、110は、2つのコネクタプレート114、1
16との相互接続に因って、チャック組立体80、81
に対して即座に使用可能の信号・保護接続を夫々提供す
ると共に、同様に即座に使用可能の保護されたKelv
in接続をそれに対して提供する。例えば素子80を通
るテスト装置からの低電流漏洩の測定の如きチャック組
立体の保護のみを必要とする用途では、オペレータは単
一の保護されたケーブル122aをHewlett−P
ackard 4142BモジュラーDC電源/モニタ
ーの如きテスト器具を着脱自在のコネクタ122に接続
し、単一ラインがチャック組立体素子80にコネクタ素
子108aとコネクタプレート114を通して与えられ
るようになすことだけを必要とする。別法として、もし
チャック組立体に対するKelvin接続が例えば低キ
ャパシタンスの測定に必要とされる如く、低電圧測定の
ために必要とされるならば、オペレータは1対のケーブ
ル122a、124aをHewlett−Packar
d 4284A精密LCRメーターの如き適当な測定器
具からの夫々のコネクタ122、124に取付けること
だけを必要とし、それによって両電源及び測定ラインを
コネクタ素子108a、110aとコネクタプレート1
14を通して素子80に提供し、保護ラインをコネクタ
素子108b、110b及びコネクタプレート116を
通して素子81へ提供する。
をもつ夫々の個別に移動可能のプローブ30は夫々のプ
ローブホルダー28によって支持され、前記ホルダーは
24で示す異なったプローブポジショナの夫々の延長部
分26によって支持される。各プローブポジショナ24
の頂上にあるシールドボックス126は1対の3軸コネ
クタ128、130をもち、前記コネクタには前述の如
く適当なテスト器具から各3軸コネクタに入る夫々の3
軸ケーブル132を取付けられる。各3軸コネクタは夫
々の内部コネクタ素子128a、130aと、中間コネ
クタ素子128b、130bと、外部コネクタ素子12
8c、130cを同心配置として含む。各外部コネクタ
素子128c、130cはシールドボックス126との
接続によって終端する。逆に、内部コネクタ素子128
a、130aと、中間コネクタ素子128b、130b
は1対の同軸ケーブル134、136の内部と外部の導
体に夫々接続される。従って前記同軸ケーブルは保護ケ
ーブルとなる。各ケーブル134、136は保護体14
4によって包囲された中心導体142をもつ夫々のプロ
ーブ素子30aで夫々の同軸コネクタ138、140を
介して終端する。特に八角形ボックス48の外側領域
で、同軸ケーブル134を適切に遮蔽するために、導電
性シールドチューブ146をケーブル134、136の
回りに備えて、シールドボックス126を介して夫々の
3軸コネクタ128、130の外部コネクタ素子128
c、130cと電気接続する。シールドチューブ146
はプローブポジショナ24の下にある延長素子26の如
く、発泡材50中の同じスリットを通過する。従って、
各個別に可動のプローブ30はそれ自身の分離した個別
の可動のプローブホルダー28のみならず、その保護さ
れた同軸ケーブルのためのそれ自身の個別に可動のシー
ルド146をもつ。前記シールドは他の位置調整機構に
よって他のプローブホルダーの移動とは独立してプロー
ブホルダーと一緒に動くことができる。この特色は特に
有利である。というのは、かかる独立して可動のプロー
ブは通常は遮蔽接続と保護接続の両者のために装備され
ていないからである。従って、プローブ30は、各プロ
ーブ30の個別の位置調整可能性にも拘らず完全遮蔽と
矛盾することなく、チャック組立体20と同じように即
座に使用可能の手法で同じ保護接続及びKelvin接
続法に使用することができる。
めに使用したものであって本発明を限定するものではな
く、本発明は上述した処に限定されることなく,本発明
の範囲内で種々の変更を加えることができるものであ
る。
施例の部分正面図である。
のウエハープローブステーションの部分上面図である。
(B)は図1のウエハープローブステーションの上面図
である。
ある。(B)は図1のプローブステーションの部分断
面、部分正面図である。
る箇所の密封組立体の上面図である。
図である。(B)は図1の線5B−5B上の拡大断面上
面図である。
上面図である。
る。
である。
Claims (11)
- 【請求項1】 (a)テスト装置を保持するためのチャ
ック組立体を備え;(b)前記チャック組立体と前記ホ
ルダーの少なくとも一方ををアプローチ軸線に沿って他
方に近づけたり遠ざけたりするよう選択的に移動させる
ための位置調整機構を備え;(c)前記チャック機構は
互いに電気的に絶縁されかつ前記アプローチ軸線に沿っ
て前記ホルダーから次第に大きくなる距離をおいて位置
した少なくとも分離した第1、第2及び第3のチャック
組立体素子を含むプローブステーションにおいて、前記
チャック組立体が更に、テスト器具からのケーブルを着
脱自在に受入れるための少なくとも1つの着脱自在の電
気コネクタ組立体を含み、少なくとも2つの導電性コネ
クタ素子をもつ前記コネクタ組立体が互いに電気絶縁さ
れ、前記コネクタ素子の各々は前記第1と第2のチャッ
ク組立体素子の異なった夫々1つに番い関係に電気接続
されそして前記第3のチャック組立体素子には電気接続
されないことを特徴とするプローブステーション。 - 【請求項2】 前記チャック組立体は少なくとも2つの
他の導電性コネクタ素子をもつ他の前記着脱自在の電気
コネクタ組立体を含み、前記他の導電性コネクタ素子の
各々は、前記1つの着脱自在の電気コネクタ組立体のコ
ネクタ素子と並列に、前記第1と第2のチャック組立体
素子の異なった夫々1つに電気接続されることを特徴と
する請求項1に記載のプローブステーション。 - 【請求項3】 前記コネクタ素子の各々が前記第1と第
2のチャック組立体素子の異なった夫々1つに着脱自在
に番い関係に接続されることを特徴とする請求項1に記
載のプローブステーション。 - 【請求項4】 前記コネクタ素子の第1の素子は前記コ
ネクタ素子の第2の素子に包囲され、第1のコネクタ素
子は前記第1チャック組立体素子に電気接続され、第2
コネクタ素子は前記第2チャック組立体素子に電気接続
されることを特徴とする請求項1に記載のプローブステ
ーション。 - 【請求項5】 前記チャック組立体は前記第1と第2の
コネクタ素子と並列に、前記第1と第2のチャック組立
体素子に電気接続された前記第1と第2のコネクタ素子
の他のものをもつ他の前記着脱自在の電気コネクタ組立
体を含むことを特徴とする請求項4に記載のプローブス
テーション。 - 【請求項6】 前記チャック組立体素子の各々は前記チ
ャック組立体素子のもう1つの表面領域に面する少なく
とも1つの表面領域を含み、前記チャック組立体は更
に、夫々のチャック組立体素子の夫々の表面領域間に置
かれた誘電性スペーサを更に含み、前記スペーサは前記
表面領域の他の部分間に空気間隙を残すように前記表面
領域の一部のみにわたって延在することを特徴とする請
求項1に記載のプローブステーション。 - 【請求項7】 前記チャック組立体素子の夫々の表面領
域間に前記スペーサを通して延びるねじ山付き締着部材
と、前記表面領域の少なくとも1つから前記締着部材を
電気絶縁するために夫々の絶縁体を更に含むことを特徴
とする請求項6に記載のプローブステーション。 - 【請求項8】 前記ホルダーを前記アプローチ軸線に沿
って前記チャック組立体に行ったり来たりするよう選択
的に移動させるため及び前記アプローチ軸線に直角な他
の軸線に沿って前記チャック組立体に対して前記ホルダ
ーを選択的に移動させるための手段を更に含み、更に、
互いに電気絶縁された第1、第2及び第3のコネクタ素
子と関連する少なくとも1つの電気コネクタと、前記第
1と第2のコネクタ素子を前記電気プローブと相互連結
するために前記第1と第2のコネクタ素子に夫々個別に
電気接続された第1と第2の導体をもつ電気ケーブル
と、前記ケーブルを電磁干渉に対して遮蔽するために前
記電気ケーブルを包囲する導電性シールドを更に含み、
前記シールドは前記第3コネクタ素子に電気接続されか
つ前記アプローチ軸線に沿って前記ホルダーと一緒に前
記位置調整機構によって移動できることを特徴とする請
求項1に記載のプローブステーション。 - 【請求項9】 前記電気コネクタは実質上同心の内部と
中間と外部のコネクタ素子をもつ3軸配置をもち、前記
コネクタ素子は前記第1、第2及び第3のコネクタ素子
を夫々含み、前記電気ケーブルは実質上同心の内部と外
部の導体をもつ同軸ケーブルであり、前記導体は前記第
1と第2の導体を夫々含むことを特徴とする請求項8に
記載のプローブステーション。 - 【請求項10】 他の第1、第2及び第3のコネクタ素
子を更にもつ他の前記電気コネクタと、前記他の第1と
第2のコネクタ素子に個別に電気接続された前記第1と
第2の導体をもつ他の電気ケーブルを含み、前記シール
ドは前記他の電気ケーブルを包囲することを特徴とする
請求項8に記載のプローブステーション。 - 【請求項11】 前記チャック組立体に対して電気プロ
ーブのための他のホルダーを選択的に移動させるための
他の位置調整機構を含み、前記シールドは前記他の位置
調整機構による移動とは独立して移動できることを特徴
とする請求項8に記載のプローブステーション。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/896853 | 1992-06-11 | ||
| US07/896,853 US5345170A (en) | 1992-06-11 | 1992-06-11 | Wafer probe station having integrated guarding, Kelvin connection and shielding systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0653293A true JPH0653293A (ja) | 1994-02-25 |
| JP3227026B2 JP3227026B2 (ja) | 2001-11-12 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13596393A Expired - Fee Related JP3227026B2 (ja) | 1992-06-11 | 1993-06-07 | プローブステーション |
Country Status (4)
| Country | Link |
|---|---|
| US (14) | US5345170A (ja) |
| EP (1) | EP0574149B1 (ja) |
| JP (1) | JP3227026B2 (ja) |
| DE (1) | DE69322206T2 (ja) |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100745667B1 (ko) * | 2000-09-05 | 2007-08-02 | 캐스케이드 마이크로테크 인코포레이티드 | 시험중의 디바이스를 유지하기 위한 척 |
| JP2008306215A (ja) * | 2000-09-05 | 2008-12-18 | Cascade Microtech Inc | プローブステーション用チャック |
| US7183782B2 (en) | 2003-10-31 | 2007-02-27 | Tokyo Electron Limited | Stage for placing target object |
| JP2009530644A (ja) * | 2006-03-20 | 2009-08-27 | インフィコン, インコーポレイテッド | プラズマ処理器具で用いるためのrfセンサー |
Also Published As
| Publication number | Publication date |
|---|---|
| US5663653A (en) | 1997-09-02 |
| US20040061514A1 (en) | 2004-04-01 |
| EP0574149B1 (en) | 1998-11-25 |
| US7589518B2 (en) | 2009-09-15 |
| US5434512A (en) | 1995-07-18 |
| US6335628B2 (en) | 2002-01-01 |
| US20070290700A1 (en) | 2007-12-20 |
| US6232788B1 (en) | 2001-05-15 |
| US5532609A (en) | 1996-07-02 |
| US5457398A (en) | 1995-10-10 |
| EP0574149A1 (en) | 1993-12-15 |
| US6980012B2 (en) | 2005-12-27 |
| US5604444A (en) | 1997-02-18 |
| US7330023B2 (en) | 2008-02-12 |
| DE69322206D1 (de) | 1999-01-07 |
| JP3227026B2 (ja) | 2001-11-12 |
| DE69322206T2 (de) | 1999-04-22 |
| US20050194983A1 (en) | 2005-09-08 |
| US20020043981A1 (en) | 2002-04-18 |
| US20010009377A1 (en) | 2001-07-26 |
| US20030057979A1 (en) | 2003-03-27 |
| US6492822B2 (en) | 2002-12-10 |
| US5345170A (en) | 1994-09-06 |
| US6720782B2 (en) | 2004-04-13 |
| US7492147B2 (en) | 2009-02-17 |
| US20050184744A1 (en) | 2005-08-25 |
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