JPS63312035A - Sheet holder - Google Patents

Sheet holder

Info

Publication number
JPS63312035A
JPS63312035A JP62143105A JP14310587A JPS63312035A JP S63312035 A JPS63312035 A JP S63312035A JP 62143105 A JP62143105 A JP 62143105A JP 14310587 A JP14310587 A JP 14310587A JP S63312035 A JPS63312035 A JP S63312035A
Authority
JP
Japan
Prior art keywords
filter
thin plate
sheet
suction
holding device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62143105A
Other languages
Japanese (ja)
Inventor
Mineo Nomoto
峰生 野本
Takanori Ninomiya
隆典 二宮
Yoshiyuki Osawa
大沢 義幸
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62143105A priority Critical patent/JPS63312035A/en
Publication of JPS63312035A publication Critical patent/JPS63312035A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To hold a soft sheet member without local deformation by interposing a substance provided over the whole surface with a function of passing fluid such as air in the direction of thickness between said sheet member and the surface of a sheet holding portion to hold the sheet member with vacuum adsorption. CONSTITUTION:As a general substance provided with a function of allowing fluid to pass therethrough is there a filter allowing liquid and gas to pass through a film to separate the substance from the liquid and gas. This filter 2 is interposed between a sheet (green sheet) 1 and the surface of a sheet holder portion (chuck) 4 to adsorb and hold the sheet 1. Then, local attraction acting from an attracting hole 3 in the surface of an adsorbing holder portion 4 is dispersed over the whole filter 2. Thus, the average attraction acts from numerous fine holes formed in the filter 2 so that even soft sheet 1 can be adsorbed and held without being deformed. Also, if the filter 2 is polluted, the filter 2 is exchanged so that actual damages due to the pollution can be easily removed.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は薄板部材の保持装置にかかわり、特に、ハイブ
リッドICやセラミック基板の焼結前のグリーンシート
等の軟質の薄板部材の保持に好適な保持装置に関する。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a holding device for thin plate members, and is particularly suitable for holding soft thin plate members such as green sheets of hybrid ICs and ceramic substrates before sintering. Relating to a holding device.

〔従来の技術〕[Conventional technology]

従来、半導体のクエハやマスク、レチクル等の薄板を保
持する方法として、特公昭60−15147号公報、4
!開昭57−54541号公報で開示された方法がある
。しかし、これらの保持方法を用いてグリーンシート等
の軟質の薄板部材の保持を行うと、第2図に示すように
、吸引穴3あるいは吸引用の溝(図示せず)に対応した
部分で変形が生じる。このため、上記保持装置パターン
印刷機や検査機等に適用すると、吸引用穴(あるいは溝
)から作用する局部的吸引力 により薄板部材の一部に
変形を生じ、印刷ずれや誤検査の原因となる欠点がある
。また、多層セラミック基板は、グリーンシートにスル
ーホールを形成し、このスルーホールに導体物質を充填
し、グリーンシートを複数枚重ねて熱着した後、焼結し
て作成するが、このスルーホールに導体物質を充填する
充填装置や、充填状態を検査する検査装置に上記従来の
保持装置を適用すると、グリーンシートが局部的に変形
したり、充填材が保持装置の吸引穴や吸引溝に入り込ん
だり、引き込まれたりして、充填不良や充填状態検査不
良が生じる欠点がある。また、薄板保持部表面や、吸引
穴、吸引溝に付着した汚れを取り除くことも困難である
Conventionally, as a method for holding thin plates such as semiconductor wafers, masks, and reticles, Japanese Patent Publication No. 60-15147, 4
! There is a method disclosed in Japanese Patent Publication No. 57-54541. However, when holding a soft thin plate member such as a green sheet using these holding methods, as shown in Figure 2, deformation occurs in the portion corresponding to the suction hole 3 or suction groove (not shown). occurs. Therefore, when applied to the above-mentioned holding device pattern printing machine, inspection machine, etc., the local suction force acting from the suction holes (or grooves) may cause deformation of a part of the thin plate member, causing printing misalignment or incorrect inspection. There is a drawback. In addition, multilayer ceramic substrates are created by forming through holes in green sheets, filling these through holes with a conductive material, stacking multiple green sheets, thermally bonding them, and then sintering them. If the above-mentioned conventional holding device is applied to a filling device that fills a conductive material or an inspection device that inspects the filling state, the green sheet may be locally deformed or the filling material may enter the suction hole or suction groove of the holding device. There is a drawback that the filling may be drawn in, resulting in defective filling or defective inspection of the filling state. Furthermore, it is difficult to remove dirt adhering to the surface of the thin plate holder, suction holes, and suction grooves.

一方、特公昭57−56207号公報には、多孔質焼結
金属からなる保持装置が開示されている。
On the other hand, Japanese Patent Publication No. 57-56207 discloses a holding device made of porous sintered metal.

この焼結金属は、吸着表面を高精度に加工するため研削
加工等で仕上げるが、吸着表面の穴に研削(ずの詰まり
が生じたり1表面吸着部の穴のつぶれを生じたりして、
吸着能力が低下する。そこで、エツチング等により化学
的に吸着表面の目開きをする必要があるが、この工程の
ため、表面の吸着平坦性が数十μm以上悪くなる欠点が
ある。さらに、焼結金属体は剛性が小さいため、大口径
のワークを保持する場合には、吸着力による変形を小さ
くする必要があり、高い平坦性を必要とする場! 合、厚みの厚い構造としなげればならず、大聖で高価な
保持装置となる欠点がある。また、この保持装置をグリ
ーンシートのスルーホールに導体物質を充填する充填装
置やその検査装置に適用すると、汚れが吸着面上に付着
した場合、その都度清掃しなければならない。また、グ
リーンシート吸着面をふき取るときにスルーホール内の
充填物が焼結材の多孔の中に入り込み、吸着能力を低下
させたり、また汚れの原因となることもある。
This sintered metal is finished by grinding, etc. in order to process the suction surface with high precision.
Adsorption capacity decreases. Therefore, it is necessary to chemically open the adsorption surface by etching or the like, but this process has the disadvantage that the adsorption flatness of the surface deteriorates by several tens of μm or more. Furthermore, since sintered metal bodies have low rigidity, when holding large-diameter workpieces, it is necessary to minimize deformation due to suction force, and high flatness is required! In this case, it is necessary to use a thick structure, which has the disadvantage of requiring an expensive and expensive holding device. Furthermore, when this holding device is applied to a filling device that fills conductor material into through holes in green sheets and an inspection device thereof, it is necessary to clean the suction surface each time when dirt adheres to the suction surface. Furthermore, when wiping the suction surface of the green sheet, the filler in the through holes may enter into the pores of the sintered material, reducing the suction ability or causing stains.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上記従来技術は、軟質部材を変形させることなく保持す
る点、および保持部表面の汚れを容易に取り除く点につ
いて配慮がされておらず、ハイブリッドICやセラミッ
ク基板の焼結前のグリーンシートなどのような軟質薄板
部材の保持には適さないという問題があった。
The above-mentioned conventional technology does not take into consideration the point of holding the soft member without deforming it and the point of easily removing dirt from the surface of the holding part. There was a problem in that it was not suitable for holding soft thin plate members.

本発明の目的は、軟質薄板部材を局部変形を生じること
なく保持するとともに、保持部表面の汚れによる実害を
容易に取り除くことができる。保持部に高い平坦性を保
持しかつ小型の薄板保持装置を提供することにある。
An object of the present invention is to hold a soft thin plate member without causing local deformation, and to easily eliminate actual damage caused by dirt on the surface of the holding part. It is an object of the present invention to provide a small-sized thin plate holding device that maintains high flatness in a holding part.

〔問題点を解決するための手段〕[Means for solving problems]

上記目的は、薄板と薄板保持部表面との間に、空気等の
流体を厚み方向に通過させる機能をほぼ全面にわたり備
えた物質、例えば多孔質のプラスチックフィルム等を介
在させ、真空吸着保持することにより、達成される。
The above purpose is to interpose between the thin plate and the surface of the thin plate holding part a material that has the function of allowing fluid such as air to pass through the thickness direction over almost the entire surface, such as a porous plastic film, and to hold the thin plate by vacuum suction. This is achieved by

〔作用〕[Effect]

上記流体を通過させる機能を備えた物質の一般的なもの
として、液体や気体をある膜を通過させて、その液体・
気体中の物質の分離を行うフィルタがある。このフィル
タを薄板と薄板保持部表面との間に介在させて、該薄板
を吸着保持すると、吸着保持部表面の吸引用穴から作用
する局部的な吸引力がフィルタ全体に拡散する。このた
め、薄板には、フィルタに形成された無数の微小な孔か
ら平均的な吸引力が作用し、軟質の薄板であっても、こ
れを変形させることなく吸着保持することができる。
A common substance that has the function of allowing the fluid to pass through is a substance that allows a liquid or gas to pass through a certain membrane.
There are filters that separate substances in gas. When this filter is interposed between the thin plate and the surface of the thin plate holder and the thin plate is held by suction, the local suction force acting from the suction holes on the surface of the suction holder is diffused throughout the filter. Therefore, an average suction force acts on the thin plate from the countless minute holes formed in the filter, and even a soft thin plate can be attracted and held without deforming it.

また、フィルタが汚れた場合は、フィルタを交換するこ
とにより、容易に汚れによる実害を取り除くことができ
る。
Furthermore, if the filter becomes dirty, the actual damage caused by the dirt can be easily removed by replacing the filter.

〔実施例〕〔Example〕

以下、本発明の一実施例を第1図により説明する。第1
図は本発明の基本構成を有する実施例の構成を示したも
のである。図において、1はグリーンシートで、フィル
タ2および吸引穴3が形成されたチャック4に真空吸引
される。また、フィルタ2は、吸引穴5&Cより周辺部
が吸引保持される。
An embodiment of the present invention will be described below with reference to FIG. 1st
The figure shows the configuration of an embodiment having the basic configuration of the present invention. In the figure, 1 is a green sheet, which is vacuum-suctioned into a chuck 4 in which a filter 2 and suction holes 3 are formed. Further, the peripheral portion of the filter 2 is held by suction through the suction holes 5&C.

フィルタ2は、多孔質のグラスチックフィルムを用いて
おり、その孔径はα1〜5μm程度である。上記構成に
おいて、まずフィルタ2が真空Bで示す真空手段により
チャック4に吸着保持される。そして、グリーンシート
1は、真空Aで示す真空手段により、チャック4の吸引
穴3から、フィルタ2の有する多数の微小な孔を介して
、全面が均一に吸引される。このとき、吸引穴3の吸引
部の面積を1−〜1〇−程度にすると、通常この種のチ
ャックに使用されている真空度1100WH〜400H
gで吸引した場合、フィルタ2に作用する吸引力は最大
&2t/−となる。しかし。
The filter 2 uses a porous glass film, and its pore diameter is approximately α1 to 5 μm. In the above configuration, the filter 2 is first held by suction on the chuck 4 by vacuum means indicated by vacuum B. Then, the entire surface of the green sheet 1 is uniformly suctioned by a vacuum means indicated by vacuum A from the suction hole 3 of the chuck 4 through the many minute holes of the filter 2. At this time, if the area of the suction part of the suction hole 3 is about 1- to 10-, the vacuum degree usually used in this type of chuck is 1100WH to 400H.
When suction is performed at g, the maximum suction force acting on the filter 2 is &2t/-. but.

フィルタ2は多孔質で多数の孔が形成されているため、
前記吸引力の一部はフィルタ2に作用するとともに、他
の部分の吸引力はフィルタ2に形成された孔を経由して
グリーンシート1を吸着する力として作用する。しかも
、一般に市販されている多孔質のプラスチックフィルタ
は、引張り強さが数百1/−以上あり、真空吸引力によ
ってフィルタ2が変形することはない。このため、フィ
ルタ2上のグリーンシート1は、チャック4およびフィ
ルタ2の平面度に倣って吸着保持される。フィルタ2の
厚さ誤差は300■0当り20μm程度であり、またチ
ャック4の表面の平坦度誤差は数μm以内にすることは
可能である。以上のことから、本実施例の保持装置に吸
着されたグリーンシート1は、これを500wm口当り
20〜30μm以内の誤差で平坦に保持することが可能
である。
Since the filter 2 is porous and has many pores,
A part of the suction force acts on the filter 2, and the other part of the suction force acts as a force that attracts the green sheet 1 through the holes formed in the filter 2. Moreover, commercially available porous plastic filters have a tensile strength of several hundred 1/- or more, and the filter 2 will not be deformed by the vacuum suction force. Therefore, the green sheet 1 on the filter 2 is held by suction following the flatness of the chuck 4 and the filter 2. The thickness error of the filter 2 is about 20 .mu.m per 300 mm, and the flatness error of the chuck 4 surface can be kept within several .mu.m. From the above, it is possible to hold the green sheet 1 held flat by the holding device of this embodiment with an error within 20 to 30 μm per 500 wm.

現在用いられているセラミック基板等の大きさは最大1
00m0程度であり、この範囲においては、さらに高精
度の平坦性を保ちながらグリーンシート1を保持するこ
とができる。また、セラミック基板の配線パターン幅は
数十ないし数百μmであるが、トの配線パターンのグリ
ーンシートへの印刷装置や検査装置に必要な吸着保持面
は、局部的な凹凸がなく、数十μmの平坦性を必要とす
るので、本実施例の保持装置を用いれば、保持方法に起
因する印刷不良や誤検査は皆無となる。さらに、5μm
程度のパターン欠陥を検査するパターン検査装置に本実
施例の保持装置を用いると、被検査面であるグリーンシ
ートの表面が20〜50μmの平坦性をもっているため
、パターン検出用レンズの焦点深度以内に保つことがで
き、自動焦点機能が不要となり、装置構成が簡単かつ安
価となる利点もある。
The maximum size of ceramic substrates currently used is 1
00 m0, and within this range, the green sheet 1 can be held while maintaining even higher precision flatness. In addition, the width of the wiring pattern on a ceramic substrate is several tens to hundreds of micrometers, but the suction and holding surface required for the printing equipment and inspection equipment for printing the wiring pattern onto the green sheet has no local irregularities and is several tens of micrometers wide. Since flatness of μm is required, if the holding device of this embodiment is used, there will be no printing defects or incorrect inspections caused by the holding method. Furthermore, 5μm
When the holding device of this embodiment is used in a pattern inspection device that inspects pattern defects of approximately It also has the advantage that an automatic focus function is not required, and the device configuration is simple and inexpensive.

本実施例においては、フィルタ2を保持する真空系とグ
リーンシート1を保持する真空系とを互いに独立にして
いる。この構成により、グリーンシート1の印刷や検査
後に、真空A&Cよる吸着を解除してグリーンシート1
を交換するときも、フィルタ2は真空Bによる吸着を解
除しない限りチャック4に保持されているため、グリー
ンシート1だけを簡単に取り外すことができる。また、
フィルタ2に汚れが生じた場合、真空Bによる吸着を解
除し、フィルタを交換するだけで、汚れ付着の実害防止
を簡単にできる利点もある。なお、フィルタの色を白色
にしておけば、異物あるいは汚れの付着を容易に見付け
ることができる。しかも、本実施例に用いるフィルタ2
はプラスチックであるため、フィルタが発塵する恐れも
ない。
In this embodiment, the vacuum system for holding the filter 2 and the vacuum system for holding the green sheet 1 are made independent of each other. With this configuration, after printing or inspecting the green sheet 1, the suction by the vacuum A&C is released and the green sheet 1 is
Even when replacing the green sheet 1, since the filter 2 is held by the chuck 4 unless suction by the vacuum B is released, only the green sheet 1 can be easily removed. Also,
When dirt occurs on the filter 2, there is an advantage that the actual damage caused by the adhesion of dirt can be easily prevented by simply releasing the suction by the vacuum B and replacing the filter. Note that if the color of the filter is white, foreign matter or dirt can be easily detected. Moreover, the filter 2 used in this example
Since the filter is made of plastic, there is no risk of the filter generating dust.

一方、グリーンシート1は軟質であるため、ハンドリン
グを容易にしたり、シートを破損させないために、第3
図に示すように、金枠6にグリーンシート1を接着し、
グリーンシート1を金枠6と一体にして、パターン印刷
やパターン検査等を行うことがある。第4図に、このよ
うに金枠に保持されたグリーンシートに本発明を適用し
た他の実施例の保持装置の構成を示す。図において、金
枠6に接着保持されたグリーンシート1はフィルタ2上
に保持され、金枠6はチャック7に固定されている金枠
ホルダ8に真空Cで示す真空手段により吸着保持されて
いる。その他の構造、機能は。
On the other hand, since the green sheet 1 is soft, a third
As shown in the figure, the green sheet 1 is glued to the metal frame 6,
The green sheet 1 may be integrated with the metal frame 6 to perform pattern printing, pattern inspection, etc. FIG. 4 shows the configuration of another embodiment of a holding device in which the present invention is applied to a green sheet held in a metal frame in this manner. In the figure, a green sheet 1 adhesively held on a metal frame 6 is held on a filter 2, and the metal frame 6 is held by suction on a metal frame holder 8 fixed to a chuck 7 by vacuum means indicated by vacuum C. . Other structures and functions.

第1図に示した実施例で述べたものと同じである。This is the same as described in the embodiment shown in FIG.

上記構成におけるグリーンシート1を吸着する作用も第
1図に示した実施例で述べたものと同じであり、同様な
効果が得られる。また、金枠6は、金枠ホルダ8&C形
成した真空用穴9から真空吸引されて金枠ホルダ8に固
定されるので、例えば、パターン検査機のXYテーブル
(図示せず)(第4図に示す保持装置を用いた場合、テ
ーブル移動・停止時、慣性力が金枠6に作用し、グリー
ンシートとの接着葆持部に応力が加わり、低剛性のグリ
ーンシートに亀裂が生じる等の不良が発生することもな
(、グリーンシートを確実に検査できる利点がある。
The effect of attracting the green sheet 1 in the above structure is the same as that described in the embodiment shown in FIG. 1, and the same effect can be obtained. Further, the metal frame 6 is fixed to the metal frame holder 8 by vacuum suction from the vacuum holes 9 formed in the metal frame holder 8&C. When using the holding device shown, when the table is moved or stopped, inertial force acts on the metal frame 6, stress is applied to the adhesive holding part with the green sheet, and defects such as cracks occur in the low-rigidity green sheet. This has the advantage of being able to reliably inspect green sheets.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、薄板保持面と薄板との間に、流体を厚
み方向に通過させる機能を全面にわたり備えた物質を介
在させて薄板を吸着保持するため、軟質薄板部材を、局
部的に変形させることなく、300 m口当り20〜3
0μm程度に平坦に保持することが可能となる。また、
吸着表面が汚れた場合、上記流体を通過させる機能を備
えた物質を交換することにより、汚れによる実害を簡単
に除去できる効果もある。
According to the present invention, in order to adsorb and hold the thin plate by interposing a substance having the function of allowing fluid to pass through the thickness direction over the entire surface between the thin plate holding surface and the thin plate, the soft thin plate member is locally deformed. 300 m mouthfeel 20-3 without letting
It becomes possible to hold the surface flat to about 0 μm. Also,
When the adsorption surface becomes dirty, replacing the substance that allows the fluid to pass through can easily remove the actual damage caused by the dirt.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例の薄板保持装置の断面図、第
2図は従来の保持装置の断面図、第3図は金枠付きの薄
板の外観図、第4図は金枠付き薄板を保持する本発明の
他の実施例の保持装置の断面図である。 符号の説明 1・・・・・・グリーンシート、2・・・・・・フィ、
ルタ、6・・・・・・吸引穴、4・・・・・・チャック
、5・・・・・・吸引穴、6・・・・・・金枠、7・・
・・・・チャック、8・・・・・・金枠ホルダ、9・・
・・・・真空用穴。 箪 1 図 第 2 図 s  a/L引穴 4 ナヤヘン2 5  a爪弓l穴 ゛第4図 17゛リーンンート   7 ナヤツ72 フィルタ 
    3 住オ卆ボルタ゛3 リLダlメこ    
   ヲ J鴫空月Aプ乙6 夜 オ乎
Fig. 1 is a cross-sectional view of a thin plate holding device according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of a conventional holding device, Fig. 3 is an external view of a thin plate with a metal frame, and Fig. 4 is a cross-sectional view of a thin plate with a metal frame. FIG. 7 is a sectional view of a holding device according to another embodiment of the present invention for holding a thin plate. Explanation of symbols 1... Green sheet, 2... Fi,
router, 6...suction hole, 4...chuck, 5...suction hole, 6...metal frame, 7...
... Chuck, 8 ... Metal frame holder, 9 ...
...Vacuum hole. 1 Figure 2 Figure s A/L drawing hole 4 Naya Hen 2 5 a Nail arch L hole ゛ Figure 4 17゛ Lean root 7 Nayasu 72 Filter
3 Residential Voltage 3 Redemption
wo J 鴫空月 Apu Otsu 6 Night Oh

Claims (1)

【特許請求の範囲】 1、薄板を保持する保持部と、該薄板の保持手段とを有
する薄板保持装置において、該薄板と該保持部表面との
間に、流体を厚み方向に通過させる機能をほぼ全面にわ
たり備えた物質を介在させたことを特徴とする薄板保持
装置。 2、特許請求の範囲第1項に記載の薄板保持装置におい
て、薄板の保持手段が、該薄板を真空によつて保持する
ものであることを特徴とする薄板保持装置。 3、特許請求の範囲第1項または第2項に記載の薄板保
持装置において、薄板が軟質であることを特徴とする薄
板保持装置。 4、特許請求の範囲第1項ないし第3項のいずれか1項
に記載の薄板保持装置において、流体を通過させる機能
を備えた物質がフィルム状であることを特徴とする範板
保持装置。5、特許請求の範囲第1項ないし第4項のい
ずれか1項に記載の薄板保持装置において、流体を通過
させる機能を備えた物質が非金属であることを特徴とす
る薄板保持装置。
[Claims] 1. A thin plate holding device having a holding part for holding a thin plate and a holding means for the thin plate, which has a function of allowing fluid to pass in the thickness direction between the thin plate and the surface of the holding part. A thin plate holding device characterized by having a substance interposed over almost the entire surface. 2. A thin plate holding device according to claim 1, wherein the thin plate holding means holds the thin plate by vacuum. 3. A thin plate holding device according to claim 1 or 2, characterized in that the thin plate is soft. 4. The thin plate holding device according to any one of claims 1 to 3, wherein the material having the function of allowing fluid to pass through the thin plate holding device is in the form of a film. 5. The thin plate holding device according to any one of claims 1 to 4, wherein the material having the function of allowing fluid to pass through is a nonmetallic material.
JP62143105A 1987-06-10 1987-06-10 Sheet holder Pending JPS63312035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62143105A JPS63312035A (en) 1987-06-10 1987-06-10 Sheet holder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62143105A JPS63312035A (en) 1987-06-10 1987-06-10 Sheet holder

Publications (1)

Publication Number Publication Date
JPS63312035A true JPS63312035A (en) 1988-12-20

Family

ID=15331021

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62143105A Pending JPS63312035A (en) 1987-06-10 1987-06-10 Sheet holder

Country Status (1)

Country Link
JP (1) JPS63312035A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0535399A2 (en) * 1991-09-30 1993-04-07 Gisulfo Baccini Device to process electrical circuits
JPH0639338U (en) * 1992-10-30 1994-05-24 ユーエイチティー株式会社 Work holder
US5323821A (en) * 1992-12-21 1994-06-28 Heian Corporation Suction table apparatus of a numerical control router
JPH06277972A (en) * 1993-03-25 1994-10-04 Ngk Insulators Ltd Positioning mechanism and method
US5695600A (en) * 1994-10-03 1997-12-09 Goin; Bobby Gene Vacuum table for decal weeding
JP2002351082A (en) * 2001-05-24 2002-12-04 Adtec Engineeng Co Ltd Substrate stage for exposure device
JP2010177485A (en) * 2009-01-30 2010-08-12 Panasonic Corp Substrate holding device
US8144309B2 (en) * 2007-09-05 2012-03-27 Asml Netherlands B.V. Imprint lithography
JP2014199834A (en) * 2013-03-29 2014-10-23 株式会社ディスコ Holding means and processing method
JP2015017008A (en) * 2013-07-10 2015-01-29 旭化成ケミカルズ株式会社 Porous laminate, adsorption buffer material, and adsorption method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62124844A (en) * 1985-11-27 1987-06-06 Hitachi Ltd Vacuum attraction jig

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62124844A (en) * 1985-11-27 1987-06-06 Hitachi Ltd Vacuum attraction jig

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0535399A2 (en) * 1991-09-30 1993-04-07 Gisulfo Baccini Device to process electrical circuits
US5449409A (en) * 1991-09-30 1995-09-12 Baccini; Gisulfo Device to process green-tape type circuits
JPH0639338U (en) * 1992-10-30 1994-05-24 ユーエイチティー株式会社 Work holder
US5323821A (en) * 1992-12-21 1994-06-28 Heian Corporation Suction table apparatus of a numerical control router
JPH06277972A (en) * 1993-03-25 1994-10-04 Ngk Insulators Ltd Positioning mechanism and method
US5695600A (en) * 1994-10-03 1997-12-09 Goin; Bobby Gene Vacuum table for decal weeding
JP2002351082A (en) * 2001-05-24 2002-12-04 Adtec Engineeng Co Ltd Substrate stage for exposure device
US8144309B2 (en) * 2007-09-05 2012-03-27 Asml Netherlands B.V. Imprint lithography
US20120153538A1 (en) * 2007-09-05 2012-06-21 Asml Netherlands B.V. Imprint lithography
US8323541B2 (en) 2007-09-05 2012-12-04 Asml Netherlands B.V. Imprint lithography
JP2010177485A (en) * 2009-01-30 2010-08-12 Panasonic Corp Substrate holding device
JP2014199834A (en) * 2013-03-29 2014-10-23 株式会社ディスコ Holding means and processing method
JP2015017008A (en) * 2013-07-10 2015-01-29 旭化成ケミカルズ株式会社 Porous laminate, adsorption buffer material, and adsorption method

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