JP2991110B2 - Substrate suction holding device - Google Patents
Substrate suction holding deviceInfo
- Publication number
- JP2991110B2 JP2991110B2 JP11064496A JP11064496A JP2991110B2 JP 2991110 B2 JP2991110 B2 JP 2991110B2 JP 11064496 A JP11064496 A JP 11064496A JP 11064496 A JP11064496 A JP 11064496A JP 2991110 B2 JP2991110 B2 JP 2991110B2
- Authority
- JP
- Japan
- Prior art keywords
- suction
- substrate
- plate
- holding device
- holes
- 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 - Fee Related
Links
Landscapes
- Jigs For Machine Tools (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、液晶ディスプレイ
のガラス基板等板状体を負圧により吸着保持し、又保持
した基板を冷却する基板吸着保持装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substrate suction holding device for holding a plate-shaped body such as a glass substrate of a liquid crystal display by suction under a negative pressure and cooling the held substrate.
【０００２】[0002]
【従来の技術】基板吸着保持装置は、基板等を負圧によ
って吸着するプレートと、プレートに負圧を供給する負
圧装置と、プレートに冷却液を供給する冷却液供給装置
等から構成され、例えば液晶ディスプレイのガラス基板
をプレート上に吸着保持し、冷却液供給装置からプレー
トに冷却液等を送り製造工程の途中で加熱されたガラス
基板を冷却させる装置である。2. Description of the Related Art A substrate suction and holding device comprises a plate for sucking a substrate or the like by a negative pressure, a negative pressure device for supplying a negative pressure to the plate, a cooling liquid supply device for supplying a cooling liquid to the plate, and the like. For example, this is an apparatus in which a glass substrate of a liquid crystal display is sucked and held on a plate, and a cooling liquid or the like is sent from the cooling liquid supply device to the plate to cool the glass substrate heated during the manufacturing process.
【０００３】従来のプレート２０を図５に示す。プレー
ト２０は図５に示すように、負圧装置に連通した吸着孔
４が、プレート２０の中央部に楕円状に、又外周部に直
線上に配置されており、更に昇降ピン６がプレート２０
の中央部からプレート２０の対角線に沿って等間隔で配
置されている。A conventional plate 20 is shown in FIG. As shown in FIG. 5, the plate 20 has suction holes 4 communicating with the negative pressure device arranged in an elliptical shape in the center of the plate 20 and in a straight line in the outer periphery thereof.
Are arranged at equal intervals along the diagonal line of the plate 20 from the center of the plate 20.
【０００４】そして、基板吸着保持装置は、前工程から
ハンド等によって基板が搬送されてくると昇降ピン６を
上昇させて基板を支持し、ハンドが原点に復帰すると吸
着孔４に負圧を供給して吸着を開始させ、昇降ピン６を
下降させて基板をプレート２０で吸着する。冷却液をプ
レート２０に供給し基板が冷却されると、吸着孔４への
負圧の供給を停止し、吸着孔４から不活性ガスを吹き出
しながら昇降ピン６を上昇し、基板をプレート２０から
剥離して次工程に移すようにしていた。When the substrate is conveyed by a hand or the like from the previous process, the substrate suction holding device raises the elevating pins 6 to support the substrate, and supplies a negative pressure to the suction hole 4 when the hand returns to the origin. Then, the lifting pins 6 are lowered to suck the substrate on the plate 20. When the cooling liquid is supplied to the plate 20 and the substrate is cooled, the supply of the negative pressure to the suction hole 4 is stopped, and the elevating pins 6 are raised while blowing out the inert gas from the suction hole 4 to move the substrate from the plate 20. They were peeled off and moved to the next step.
【０００５】又、基板等を吸着する他の技術としては、
吸着面と被吸着物との間に隙間を形成するために複数の
突起を吸着面の下面に設けた発明（特開平５−２０８３
８９号）、吸着板の表面外周部にリブを形成し、吸着板
表面から基板を剥離する場合に、リブを用いて吸着孔か
ら吹き出した空気の展開層を基板表面と吸着板との間に
形成する発明（実開平５−７８４９１号）、吸着孔に弾
性体からなるＯリングを取り付け、基板の損傷を防ぐ発
明（実開平１−６４３８７号）等が知られている。[0005] Other techniques for adsorbing a substrate or the like include:
An invention in which a plurality of protrusions are provided on the lower surface of the suction surface in order to form a gap between the suction surface and the object to be sucked (Japanese Patent Laid-Open No. 5-20883)
No. 89), a rib is formed on the outer periphery of the surface of the suction plate, and when the substrate is peeled off from the surface of the suction plate, a developing layer of air blown out from the suction hole using the rib is placed between the surface of the substrate and the suction plate. forming invent (real-Open No. 5-78491), fitted with O-ring made of an elastic body to the suction hole, the invention prevent damage to the substrate (real-Open No. 1-64387), and the like.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、従来の
基板吸着保持装置においては、プレート２０上に吸着孔
４と昇降ピン６とを相互の位置関係を考慮することなく
配列していたため、基板をプレート２０の表面から剥離
するため昇降ピン６を作動させた場合、個々の昇降ピン
６にかかる基板の吸着力にばらつきが生じていた。すな
わち、ある昇降ピン６は周囲に複数の吸着孔４が近接し
ているため吸着孔４による吸着力が強く、別の昇降ピン
６は周囲に吸着孔４がなく吸着力がほとんど働かないと
いう状態が生じており、昇降ピン６が基板を上昇させた
とき基板に加えられる力が個々の昇降ピン６毎に異なっ
ていた。そのため、基板の吸着を解除させる解除バラン
スが均一に発生せず、更に基板とプレート２０の接触面
が平面であるために互いの吸着力が大きく、昇降ピン６
の作動によって基板の割れが発生し易くなり、稼動率、
歩留りの低下等を引き起こしていた。第２の問題点とし
ては、上記吸着技術（特開平５−２０８３８９号、実開
平５−７８４９１号、実開平１−６４３８７号）を使用
した場合には、一部の接触部分を除き、基板とプレート
との間に０．２〜０．３ｍｍ程度の空間が形成されるた
め、基板の裏面がプレートの表面と均一に接触せず、基
板を効率的に冷却できないことがある。However, in the conventional substrate suction holding device, the suction holes 4 and the lifting pins 6 are arranged on the plate 20 without considering the mutual positional relationship. When the lifting pins 6 were actuated to peel off from the surface of the substrate 20, the suction force of the substrate applied to each lifting pin 6 varied. That is, one lifting pin 6 has a strong suction force due to the plurality of suction holes 4 in the vicinity, and another lifting pin 6 has no suction hole 4 in the periphery and hardly works the suction force. And the force applied to the substrate when the lift pins 6 lifted the substrate was different for each of the lift pins 6. Therefore, the release balance for releasing the suction of the substrate is not uniformly generated, and further, since the contact surface between the substrate and the plate 20 is flat, the suction force of each other is large, and the lifting pins 6
Actuation cracking of the substrate is likely to occur due to the, 稼 Doritsu,
This has caused a decrease in yield. As a second problem, when the above-mentioned adsorption technology (Japanese Patent Laid-Open No. 5-208389, Japanese Utility Model Application No. 5-78491, and Japanese Utility Model Application Laid-open No. 1-64387) is used, except for a part of the contact part, Since a space of about 0.2 to 0.3 mm is formed between the substrate and the plate, the back surface of the substrate may not contact the surface of the plate uniformly, and the substrate may not be cooled efficiently.
【０００７】[0007]
【課題を解決するための手段】上記の課題を解決する手
段として、本発明では基板吸着保持装置を次のように構
成した。As means for solving the above-mentioned problems, in the present invention, a substrate suction holding device is constituted as follows.
【０００８】平面状の吸着面に吸着孔を設け、吸着孔の
負圧による吸着力で基板を吸着、保持する基板吸着保持
装置において、前記吸着面に吸着孔と昇降ピンとを交互
に円形に配列し、更にかかる吸着孔と昇降ピンとの配列
を同心円状に形成して基板吸着保持装置を構成した。こ
のように吸着孔を同心円状に等間隔で配置することによ
り基板への吸着力を均等にできる。そして、吸着孔と同
一円上に交互に昇降ピンを設け、又これらを同心円状に
配置することにより、バランスよく基板を昇降ピンで押
し上げることが可能になり、これにより基板に加えられ
る不均一な力を最小限にして基板の損傷等を防止するこ
とができる。[0008] In a substrate suction holding device for providing suction holes on a flat suction surface and sucking and holding a substrate by suction force due to negative pressure of the suction holes, suction holes and lifting pins are alternately arranged in a circle on the suction surface. Further, the arrangement of the suction holes and the elevating pins is formed concentrically to constitute a substrate suction holding device. By arranging the suction holes concentrically at equal intervals in this manner, the suction force to the substrate can be made uniform. By alternately providing the lifting pins on the same circle as the suction holes and arranging them concentrically, it is possible to push up the substrate with the lifting pins in a well-balanced manner. The force can be minimized to prevent the substrate from being damaged.
【０００９】また、前記同心円に配置された吸着孔ごと
にそれぞれ吸排気制御が可能なように吸着孔の吸排気配
管を少なくとも２系統備えて基板吸着保持装置を構成し
た。このようにすると、中心から最外円に向けてあるい
は最外円から中心に向ける等同一円上に配置された吸着
孔ごとに吸排気を制御でき、短時間で吸着解除及び不活
性ガスの吹き付けができ、基板への負荷の不均一を緩和
することが可能となる。In addition, the substrate suction holding device is provided with at least two systems of suction and exhaust pipes for the suction holes so that the suction and exhaust control can be performed for each of the suction holes arranged in the concentric circle. In this way, the suction and exhaust can be controlled for each suction hole arranged on the same circle, such as from the center to the outermost circle or from the outermost circle to the center. This makes it possible to reduce uneven load on the substrate.
【００１０】更に、吸着面の表面に微小な凹凸を形成し
て基板吸着保持装置を構成した。このように表面に凹凸
を形成すると、吸着面と基板の間への不活性ガスの流れ
込みや、昇降ピンにて基板を持ちあげる際の大気開放を
円滑にすることができる。又、凹凸を微小にしているこ
とから冷却効率が低下することはなく、しかも基板の全
面に均一に接触することから基板の冷却を均等にするこ
とができる。[0010] Further, the substrate suction holding device is formed by forming minute irregularities on the surface of the suction surface. The formation of the irregularities on the surface in this way makes it possible to smoothly flow the inert gas between the adsorption surface and the substrate and to open the substrate to the atmosphere when the substrate is lifted by the lifting pins. Further, since the unevenness is minute, the cooling efficiency does not decrease, and the substrate can be uniformly cooled because it contacts the entire surface of the substrate uniformly.
【００１１】[0011]
【発明の実施の形態】本発明にかかる基板吸着保持装置
の実施の形態を図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a substrate suction and holding apparatus according to the present invention will be described with reference to the drawings.
【００１２】図１に、基板吸着保持装置の斜視図を示
す。図１において、２はプレートであり、プレート２の
表面には吸着孔４、及び昇降ピン６等が備えられ、１０
はプレート２に負圧によって吸着されるガラス基板であ
る。FIG. 1 is a perspective view of a substrate suction holding device. In FIG. 1, reference numeral 2 denotes a plate, and the surface of the plate 2 is provided with a suction hole 4, a lifting pin 6, and the like.
Is a glass substrate that is attracted to the plate 2 by negative pressure.
【００１３】まず、吸着保持装置１の構成を説明する。
吸着保持装置１は、図２に示すようにプレート２と、プ
レート２に冷却液を送る冷却装置１６と、空気圧制御装
置１８等からなり、プレート２には、吸着孔４、昇降ピ
ン６、および吸排気通路８、冷却液通路１２が設けてあ
る。First, the structure of the suction holding device 1 will be described.
As shown in FIG. 2, the suction holding device 1 includes a plate 2, a cooling device 16 for sending a cooling liquid to the plate 2, an air pressure control device 18, and the like. An intake / exhaust passage 8 and a coolant passage 12 are provided.
【００１４】又、プレート２の表面には、絶縁処理を行
った上で微細で均一な凹凸が形成されており、形成され
ている凹凸は基板１０を表面に吸着するにあたり支障を
きたさない高さであり、具体的には１０〜１００μｍの
範囲となっている。On the surface of the plate 2, fine and uniform irregularities are formed after insulation treatment, and the formed irregularities have a height that does not hinder the adsorption of the substrate 10 to the surface. And specifically, in the range of 10 to 100 μm.
【００１５】吸着孔４は、図３に示すようにプレート２
の中央を中心とした同心円上に所定の間隔に配置されて
おり、吸着孔４の高さはプレート２の表面と同等もしく
は若干低めである。又同一の円上に配置されている吸着
孔４は、図４に示すように同一系統の吸排気通路８ａ、
８ｂ、８ｃに連通し、各吸排気通路８ａ等はそれぞれ吸
排気配管５ａ、５ｂ、５ｃを介して空気圧制御装置１８
に接続している。図３、図４において、昇降ピン６は黒
丸で表し、同一系統の吸着孔４は、同一の模様で表し
た。The suction holes 4 are provided on the plate 2 as shown in FIG.
Are arranged at predetermined intervals on a concentric circle centered on the center of the plate 2, and the height of the suction holes 4 is equal to or slightly lower than the surface of the plate 2. Further, as shown in FIG. 4, the suction holes 4 arranged on the same circle are the suction and exhaust passages 8a of the same system,
8b and 8c, and the intake and exhaust passages 8a and the like are respectively connected to the air pressure control device 18 through intake and exhaust pipes 5a, 5b and 5c.
Connected to 3 and 4, the lifting pins 6 are represented by black circles, and the suction holes 4 of the same system are represented by the same pattern.
【００１６】空気圧制御装置１８は、図示しない圧力ポ
ンプと、真空ポンプに接続し、圧力ポンプからの高圧空
気もしくは真空ポンプによる負圧を、内部に備えた切り
換え機構によって切り換えて、吸排気配管５ａ、５ｂ、
５ｃを通して任意に各吸排気通路８ａ、８ｂ、８ｃに供
給する装置である。The air pressure control device 18 is connected to a pressure pump (not shown) and a vacuum pump, and switches the high pressure air from the pressure pump or the negative pressure from the vacuum pump by a switching mechanism provided therein, so that the suction / exhaust pipe 5a, 5b,
This is a device for arbitrarily supplying each of the intake / exhaust passages 8a, 8b, 8c through 5c.
【００１７】昇降ピン６は、図示しない駆動機構の作動
により基板２より突出後退し、吸着孔４と同じ円上に吸
着孔４と交互に、かつ等しい間隔をあけて配置してあ
る。The lifting pins 6 protrude and retract from the substrate 2 by the operation of a driving mechanism (not shown), and are arranged alternately with the suction holes 4 on the same circle as the suction holes 4 and at equal intervals.
【００１８】冷却液通路１２は、プレート２の内部に平
面状にほぼ全面にわたり設けてあり、プレート２の中央
に冷却液通路１２の入水口１３が、又プレート２の角部
４箇所にそれぞれ出水口１５が設けられている。入水口
１３には、冷却装置１６からの送水管が接続してあり、
又出水口１５には冷却装置１６に戻る戻り管が接続して
あり、入水口１３から冷却液通路１２内に送水された冷
却液は内部を四方に広がり基板１０を内部から冷却しな
がら、四隅に設けられた出水口１５から冷却装置１６に
戻るようになっている。The coolant passage 12 is provided substantially entirely in a plane inside the plate 2, and a water inlet 13 of the coolant passage 12 is provided at the center of the plate 2, and is provided at four corners of the plate 2. A water port 15 is provided. A water pipe from the cooling device 16 is connected to the water inlet 13,
A return pipe returning to the cooling device 16 is connected to the water outlet 15, and the coolant sent from the water inlet 13 into the coolant passage 12 spreads the inside in four directions, while cooling the substrate 10 from the inside. Is returned to the cooling device 16 from the water outlet 15 provided in the water heater.
【００１９】次に、吸着保持装置１の動作を説明する。Next, the operation of the suction holding device 1 will be described.
【００２０】まずプレート２の昇降ピン６は下降してお
り、前工程から基板１０がハンド（図示せず）によって
プレート２上に運ばれてくると、昇降ピン６が上昇し、
基板１０をハンドから持ちあげる。ハンドが基板１０か
ら離れ原点に復帰すると、昇降ピン６が下降し、基板１
０を吸着する。その際、まず吸排気配管５ａに負圧が供
給され、最も内側の吸着孔４ａが基板１０を吸着する。
そして昇降ピン６が完全に下降するとその２〜５秒後に
その他の吸排気配管５ｂ、５ｃに順次負圧が供給され、
内側の吸着孔４ｂから吸着孔４ｃへと吸着を順次行う。
これにより基板１０が最も収縮するプレート２の外周部
の吸着孔４ｃの周辺の摩擦力を低減させ、摩擦及び静電
気による吸着力を減少させることができる。First, the lifting pins 6 of the plate 2 are lowered, and when the substrate 10 is carried on the plate 2 by a hand (not shown) from the previous process, the lifting pins 6 are raised.
The substrate 10 is lifted from the hand. When the hand separates from the substrate 10 and returns to the origin, the elevating pins 6 descend and the substrate 1
Adsorb 0. At that time, first, a negative pressure is supplied to the suction / exhaust pipe 5a, and the innermost suction hole 4a sucks the substrate 10.
When the elevating pin 6 is completely lowered, a negative pressure is sequentially supplied to the other intake and exhaust pipes 5b and 5c two to five seconds after that,
The suction is performed sequentially from the inner suction holes 4b to the suction holes 4c.
Thereby, the frictional force around the suction hole 4c in the outer peripheral portion of the plate 2 where the substrate 10 contracts most can be reduced, and the suction force due to friction and static electricity can be reduced.
【００２１】基板１０を吸着させたなら、吸着した状態
で冷却液通路１２に冷却装置から冷却液を導水させて基
板１０を冷却する。基板１０は、基板１０がプレート２
に吸着によって密着していることから熱の伝達効率が高
く、効率よくかつ均等に冷却できる。After the substrate 10 is adsorbed, the cooling liquid is introduced from the cooling device to the cooling liquid passage 12 in the adsorbed state to cool the substrate 10. The substrate 10 is a plate 2
The heat transfer efficiency is high due to the close contact with the surface, and the cooling can be performed efficiently and uniformly.
【００２２】冷却が終了したなら吸着解除を行う。吸着
解除は、まず吸着孔４への負圧の供給を停止し、吸着孔
４に不活性ガスを供給する。吸着孔４ａ、４ｂ、４ｃか
ら不活性ガスを吹き出す際には、負圧の供給順序とは逆
にし最も外側の吸着孔４ｃから順次内側の吸排気配管５
ｂ、５ａで制御される吸着孔４ｂ、４ａに向って吸着解
除及び不活性ガスの吹き出しを行う。これは最も吸着力
が大きい外周部から大気開放し基板割れを防止すること
を目的とする。最も内側の吸着孔４ａの吸着を解除した
後に昇降ピン６を上昇させて、基板１０をプレート２か
ら剥離する。このときは吸着解除及び不活性ガスを吹き
出した１〜２秒後にＳ字制御を行ったモータ駆動で昇降
ピン６を押し上げることが望ましい。又、不活性ガスは
イオナイザーを通して吸着孔４より噴出することが望ま
しい。When the cooling is completed, the suction is released. To release the adsorption, the supply of the negative pressure to the adsorption holes 4 is first stopped, and an inert gas is supplied to the adsorption holes 4. When the inert gas is blown out from the suction holes 4a, 4b, 4c, the supply order of the negative pressure is reversed, and the inner suction / exhaust pipe 5 is sequentially arranged from the outermost suction hole 4c.
The suction is released and the inert gas is blown out toward the suction holes 4b and 4a controlled by b and 5a. The purpose of this is to prevent the substrate from cracking by opening to the atmosphere from the outer peripheral portion having the largest suction force. After the suction of the innermost suction holes 4a is released, the lifting pins 6 are raised, and the substrate 10 is separated from the plate 2. At this time, it is desirable that the lifting pin 6 be pushed up by the motor drive that performs the S-shaped control 1 to 2 seconds after the adsorption is released and the inert gas is blown out. Further, it is desirable that the inert gas is ejected from the adsorption hole 4 through the ionizer.
【００２３】このように、上記吸着保持装置１によれ
ば、昇降ピン６から基板１０に不均一で、無理な力が加
えられることがなく、基板１０の吸着解除をすることが
できるので、基板１０の損傷が発生せず、歩留りの高
い、生産性の高い基板吸着保持装置を提供することがで
きる。As described above, according to the suction holding apparatus 1, the suction of the substrate 10 can be released without applying uneven and unreasonable force to the substrate 10 from the lifting pins 6. Thus, it is possible to provide a high-yield, high-productivity substrate suction and holding apparatus that does not cause damage to the substrate.
【００２４】[0024]
【発明の効果】本発明の基板吸着保持装置によれば、吸
着孔と昇降ピンとを交互に円状に配置し、更にその吸着
孔と昇降ピンとを同心円状に配置したことにより、プレ
ートから基板を剥離する際の基板割れを大幅に減少する
ことが可能となる。According to the substrate suction holding apparatus of the present invention, the suction holes and the lifting pins are alternately arranged in a circular shape, and the suction holes and the lifting pins are concentrically arranged, so that the substrate can be removed from the plate. Substrate cracking at the time of peeling can be greatly reduced.
【００２５】その理由としては、均等に配置された昇降
ピンは、基板を剥離する際に各吸着孔に対して同等の吸
着力により接触し、昇降ピンを押し上げる際に吸着力の
大きい吸着孔付近を左右から同等の力で押し上げること
が可能となり、これにより基板に加わる力を均等にする
ことができるからである。The reason for this is that evenly arranged lifting pins come into contact with the suction holes with the same suction force when the substrate is peeled off, and when the lifting pins are pushed up, the vicinity of the suction holes having a large suction force is increased. Can be pushed up from the left and right with the same force, whereby the force applied to the substrate can be equalized.
【００２６】また、プレート表面に微細な凹凸を形成し
たことにより、不活性ガスを吸着孔から吹き出させた際
にガスが基板との接触面の間に広く拡散しやすくなり、
又基板を剥離させる際基板との接触面の間に大気が流入
し易くなり、より基板の剥離を容易にできる。Further, by forming fine irregularities on the plate surface, when the inert gas is blown out from the adsorption hole, the gas is easily diffused widely between the contact surface with the substrate,
Further, when the substrate is peeled, the air easily flows between the contact surface with the substrate and the substrate can be more easily peeled.
【図１】本発明にかかる吸着保持装置の一実施形態を示
す斜視図である。FIG. 1 is a perspective view showing an embodiment of a suction holding device according to the present invention.
【図２】図１に示した吸着保持装置の断面図である。FIG. 2 is a sectional view of the suction holding device shown in FIG.
【図３】本発明にかかるプレートを示す平面図である。FIG. 3 is a plan view showing a plate according to the present invention.
【図４】本発明にかかるプレートを示す平面図である。FIG. 4 is a plan view showing a plate according to the present invention.
【図５】従来のプレートを示す平面図である。FIG. 5 is a plan view showing a conventional plate.
１ 吸着保持装置 ２、２０ プレート ４ａ、４ｂ、４ｃ 吸着孔 ５ａ、５ｂ、５ｃ 吸排気配管 ６ 昇降ピン ８ａ、８ｂ、８ｃ 吸排気通路 １０ 基板 １２ 冷却液通路 １３ 入水口 １５ 出水口 １６ 冷却装置 １８ 空気圧制御装置 DESCRIPTION OF SYMBOLS 1 Suction holding apparatus 2, 20 Plate 4a, 4b, 4c Suction hole 5a, 5b, 5c Suction / exhaust piping 6 Elevating pin 8a, 8b, 8c Suction / exhaust passage 10 Substrate 12 Coolant passage 13 Water inlet 15 Water outlet 16 Cooling device 18 Pneumatic control device
Claims (3)
孔に供給した負圧の吸着力により基板を吸着、保持する
基板吸着保持装置において、 前記吸着面に、前記基板を該吸着面に対して昇降させる
昇降ピンと前記吸着孔とを交互に円状に配置し、かつ前
記昇降ピンと前記吸着孔とから形成された配列円を同心
円状に設け、前記基板を吸着させる際に、前記吸着孔への負圧の供給
を中心付近の吸着孔より開始させて順次外方に進行させ
ること を特徴とする基板吸着保持装置。1. A substrate suction and holding device which has a suction hole on a planar suction surface and suctions and holds a substrate by a suction force of a negative pressure supplied to the suction hole, wherein the suction surface holds the substrate on the suction surface. The lifting pins to be moved up and down with respect to the surface and the suction holes are alternately arranged in a circle, and an array circle formed by the lifting pins and the suction holes is provided concentrically, and when the substrate is sucked, Supply of negative pressure to suction holes
Starting from the suction hole near the center and proceeding outward sequentially.
Substrate attracting and holding unit according to claim Rukoto.
位置する前記吸着孔より吸着解除を開始し、順次中心に
向けて進行させることを特徴とする請求項１に記載の基
板吸着保持装置。2. The method according to claim 1, further comprising :
Start the suction release from the suction hole located, and sequentially center
The substrate suction and holding device according to claim 1, wherein the device is moved toward the substrate.
特徴とする請求項１又は２に記載の基板吸着保持装置。3. A substrate attracting and holding unit according to claim 1 or 2, characterized by forming fine irregularities on the suction surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11064496A JP2991110B2 (en) | 1996-05-01 | 1996-05-01 | Substrate suction holding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11064496A JP2991110B2 (en) | 1996-05-01 | 1996-05-01 | Substrate suction holding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09295236A JPH09295236A (en) | 1997-11-18 |
| JP2991110B2 true JP2991110B2 (en) | 1999-12-20 |
Family
ID=14540932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11064496A Expired - Fee Related JP2991110B2 (en) | 1996-05-01 | 1996-05-01 | Substrate suction holding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2991110B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6272139A (en) * | 1985-09-26 | 1987-04-02 | Hitachi Electronics Eng Co Ltd | Wafer sucking device |
| JPS63131535A (en) * | 1986-11-21 | 1988-06-03 | Canon Inc | Substrate supporting device |
| JPH04256535A (en) * | 1990-12-27 | 1992-09-11 | Osaka Titanium Co Ltd | Wafer suction board |
| JPH06339830A (en) * | 1993-05-31 | 1994-12-13 | Hirata Kiko Kk | Vacuum sucking table device |
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1996
- 1996-05-01 JP JP11064496A patent/JP2991110B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| JPH09295236A (en) | 1997-11-18 |
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