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JPH11289002A - Single wafer processing mechanism - Google Patents

Single wafer processing mechanism

Info

Publication number
JPH11289002A
JPH11289002A JP10091416A JP9141698A JPH11289002A JP H11289002 A JPH11289002 A JP H11289002A JP 10091416 A JP10091416 A JP 10091416A JP 9141698 A JP9141698 A JP 9141698A JP H11289002 A JPH11289002 A JP H11289002A
Authority
JP
Japan
Prior art keywords
wafer
base
holding member
processing mechanism
processed
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.)
Abandoned
Application number
JP10091416A
Other languages
Japanese (ja)
Inventor
Hajime Shiyaura
肇 社浦
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.)
Toshiba Corp
Toshiba Electronic Device Solutions Corp
Original Assignee
Toshiba Corp
Toshiba Microelectronics 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 Toshiba Corp, Toshiba Microelectronics Corp filed Critical Toshiba Corp
Priority to JP10091416A priority Critical patent/JPH11289002A/en
Publication of JPH11289002A publication Critical patent/JPH11289002A/en
Abandoned legal-status Critical Current

Links

Landscapes

  • Weting (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
  • Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
  • Cleaning Or Drying Semiconductors (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a single semiconductor wafer processing mechanism which is improved so as to reduce a cause of a drop in its reliability or yield. SOLUTION: A rotary base 2 is provided to have a predetermined uniform height of arcuate positioning parts 21 provided along its periphery to carry a semiconductor wafer 7 thereon. Movable holder members 4 for holding end face parts of the semiconductor wafer are inserted into gaps between the positioning parts 21 so as to form a continuous arcuate shape together with the parts 21. When the water 7 is carried on the rotary base 2, a height X mm of the positioning parts 21 and holder members 4 projected from a position 22 of the base contacted with a rear side of the wafer satisfies a relationship of 0<X<A+0.5 mm, where A denotes a thickness of the end face of the wafer (in mm). Thereby when the wafer is rotated at a high speed, splashing of a processing solution, irregular treatment of the wafer caused by disturbance of an air flow and detouring of the processing solution to the rear side of the wafer can be remarkably reduced.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は半導体製造工程に
おいて、被処理体、特に半導体ウェハにおける現像、洗
浄、エッチング等で用いられる枚葉処理チャックを改善
した枚葉処理機構に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-wafer processing mechanism having an improved single-wafer processing chuck used for development, cleaning, etching, and the like of an object to be processed, particularly a semiconductor wafer, in a semiconductor manufacturing process.

【0002】[0002]

【従来の技術】従来の枚葉処理チャックにおけるウェハ
の固定機構は、次の(A),(B)に代表されるものが
ある。 (A)ウェハ裏面を真空引きで吸着し、ウェハを固定す
る機構。
2. Description of the Related Art A wafer fixing mechanism in a conventional single-wafer processing chuck is represented by the following (A) and (B). (A) A mechanism for fixing the wafer by sucking the back surface of the wafer by evacuation.

【0003】(B)ウェハ外周端部を複数のピンにより
挟み込み、ウェハを固定する機構。図5(a),(b)
はそれぞれ、(A)の機構に関する、ウェハ裏面の平面
図と、横からの概観図を示す。真空吸着チャック31
は、回転駆動部32にその中心軸が固定されている。ウ
ェハ33は、真空吸着チャック31とウェハ33の裏面
が部分的に接触し、真空引きで固定される。
(B) A mechanism for fixing the wafer by sandwiching the outer peripheral edge of the wafer with a plurality of pins. FIG. 5 (a), (b)
3A and 3B show a plan view of the back surface of the wafer and a schematic view from the side of the mechanism of FIG. Vacuum suction chuck 31
Has its center axis fixed to the rotation drive unit 32. The wafer 33 is fixed by vacuum suction chuck 31 and the back surface of the wafer 33 in partial contact.

【0004】このような機構では、図5(a)に示すよ
うに、ウェハ33の裏面におけるウェハチャックの接触
部において、ダストが圧着され付着することがある(吸
着痕34)。このダストは、ウェハの水平精度に誤差を
生じさせたり、以降の処理中に剥がれてウェハ表面に回
り込んで付着したりする。このようなダストの存在は、
製品歩留まりの低下の原因となる。
In such a mechanism, as shown in FIG. 5 (a), dust may be pressed and adhered to the contact portion of the wafer chuck on the back surface of the wafer 33 (adsorption marks 34). The dust may cause an error in the horizontal accuracy of the wafer, or may be peeled off during the subsequent processing and adhere to the wafer surface. The presence of such dust
This causes a reduction in product yield.

【0005】図6(a),(b)はそれぞれ、(B)の
機構に関する、ウェハ表面から見た平面図と、横からの
概観図を示す。ピン保持式のウェハチャック35は、回
転駆動部32にその中心軸が固定されている。ウェハ3
3は、ウェハチャック35の周囲の複数のピン36によ
りウェハ1の外周部が挟み込まれることにより固定され
る。
FIGS. 6 (a) and 6 (b) show a plan view from the wafer surface and a schematic view from the side of the mechanism of FIG. The center axis of the pin holding type wafer chuck 35 is fixed to the rotation drive unit 32. Wafer 3
3 is fixed by pinching the outer peripheral portion of the wafer 1 by a plurality of pins 36 around the wafer chuck 35.

【0006】このような機構では、ピン36がウェハ表
面から1mm以上突出している。このため、次のような
懸念がある。 (i)ウェハ回転時の処理において、処理液がピン36
に当たって跳ね、ウェハ33への再付着による汚染が発
生する。 (ii)ウェハ回転時の処理において、ピン36の存在に
より乱気流が発生し、ウェハ33のピン周辺部分におい
て現像、エッチング等の処理に関し、処理ムラ37が発
生する。 (iii) ウェハ回転時の処理において、ピン36を経由し
てウェハ裏面の外周近傍部分に処理液が回り込む。この
処理液がエッチング液なら、裏面の外周近傍部分がエッ
チングされてしまう。 上記(i),(ii),(iii) はいずれも製造歩留まりを
低下させる原因となる。
In such a mechanism, the pins 36 protrude from the wafer surface by 1 mm or more. Therefore, there are the following concerns. (I) In the process at the time of wafer rotation, the processing liquid
, And contamination due to re-adhesion to the wafer 33 occurs. (Ii) In the process at the time of wafer rotation, turbulence is generated due to the presence of the pins 36, and processing irregularities 37 occur in the peripheral portions of the wafer 33, such as development and etching. (iii) In the processing during the rotation of the wafer, the processing liquid flows around the periphery of the back surface of the wafer via the pins 36. If this processing liquid is an etching liquid, the portion near the outer periphery of the back surface will be etched. All of the above (i), (ii), and (iii) cause a reduction in manufacturing yield.

【0007】[0007]

【発明が解決しようとする課題】従来の枚葉処理機構に
おいて、ウェハ裏面の真空チャックによるウェハの固定
機構では、ウェハ裏面にダストが付着する。また、ウェ
ハ外周端部をピンで挟み込むウェハの固定機構では、ピ
ンがウェハ表面より1mm以上突出しており、ウェハ回
転中の処理液の跳ね、ピン周辺部分におけるウェハ表面
の現像、エッチング等の処理ムラ、ウェハ裏面への処理
液の回り込みといった、製造工程における信頼性を低下
させる原因を抱えているという問題がある。
In the conventional single-wafer processing mechanism, dust adheres to the back surface of the wafer in the mechanism for fixing the wafer by the vacuum chuck on the back surface of the wafer. Further, in the wafer fixing mechanism in which the outer peripheral edge of the wafer is sandwiched between the pins, the pins protrude by 1 mm or more from the wafer surface, and the processing liquid splashes during rotation of the wafer, and the processing unevenness such as development and etching of the wafer surface around the pins. In addition, there is a problem that the reliability of the manufacturing process is reduced, such as the spilling of the processing liquid onto the back surface of the wafer.

【0008】この発明は上記のような事情を考慮し、そ
の課題は、信頼性や歩留まりの低下の原因をなくするよ
うに改善された、半導体ウェハの枚葉処理機構を提供す
ることにある。
SUMMARY OF THE INVENTION The present invention has been made in consideration of the above circumstances, and has as its object to provide a semiconductor wafer single-wafer processing mechanism improved so as to eliminate the causes of a decrease in reliability and yield.

【0009】[0009]

【課題を解決するための手段】この発明の枚葉処理装置
は、回転駆動部と、前記回転駆動部に中心軸が接続され
被処理体を所定位置に載せるため周辺各所に位置決め部
を有した回転ベースと、前記回転ベースの周辺において
位置決め部の相互間に設けられた被処理体の端面を保持
する保持部材と、前記回転ベースの上方に設けられ被処
理体への処理に対応した物質が送出される処理ノズルと
を具備し、前記回転ベースにおける被処理体の裏面の接
触位置からの前記位置決め部及び保持部材の突出高さX
mmは、被処理体の端面の厚さをAmmとすると、0<
X<A+0.5mmであることを特徴とする。
A single wafer processing apparatus according to the present invention has a rotary drive unit, and a central shaft connected to the rotary drive unit, and positioning units at various locations around the workpiece to place the workpiece at a predetermined position. A rotating base, a holding member that holds an end face of the processing object provided between the positioning portions around the rotation base, and a substance that is provided above the rotating base and that corresponds to processing on the processing object. And a projection height X of the positioning part and the holding member from the contact position of the back surface of the object to be processed on the rotating base.
mm is 0 <where A is the thickness of the end face of the object to be processed.
X <A + 0.5 mm.

【0010】この発明では、位置決め部の相互間に被処
理体の保持部材が設けられ、その突出高さが被処理体の
表面から0.5mmを越えない構成とされる。これによ
り、被処理体の高速回転時、乱気流や処理液の跳ね返り
が抑えられる。
In the present invention, the holding member for the object to be processed is provided between the positioning portions, and the projecting height thereof does not exceed 0.5 mm from the surface of the object to be processed. Thereby, at the time of high-speed rotation of the object to be processed, turbulence and rebound of the processing liquid are suppressed.

【0011】[0011]

【発明の実施の形態】図1は、この発明の実施形態によ
る枚葉処理機構の要部の構成図であり、(a)は上から
見た平面図、(b)は横から見た断面図を示す。回転駆
動部1の回転軸に回転ベース2の中心軸が接続されてい
る。この回転ベース2は、被処理体、例えば半導体ウェ
ハ(二点鎖線7)を所定位置に載せるため、周辺各所に
位置決め部21を有している。ここでは、位置決め部2
1は、回転ベース2の周囲3個所に円弧状に所定の高さ
を持って均等に設けられる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a structural view of a main part of a single-wafer processing mechanism according to an embodiment of the present invention, wherein (a) is a plan view seen from above, and (b) is a cross section seen from the side. The figure is shown. The center axis of the rotation base 2 is connected to the rotation axis of the rotation drive unit 1. The rotation base 2 has positioning portions 21 at various locations around the object to be processed, for example, a semiconductor wafer (two-dot chain line 7) at a predetermined position. Here, the positioning unit 2
Numerals 1 are equally provided at three locations around the rotation base 2 in a circular arc shape having a predetermined height.

【0012】また、回転ベース2の周辺において、位置
決め部21の相互間に半導体ウェハの端面部分を保持す
るための保持部材4が設けられている。この保持部材4
は、位置決め部21の円弧状の形を繋ぐようにはまり込
んでいる。この保持部材4は、実質的に位置決め部21
と同じ高さを持って均等に設けられるのが好ましい。す
なわち、位置決め部21と保持部材4により、搭載する
ウェハに適正な回転ベース2の外周枠が構成されると考
えてもよい。
A holding member 4 for holding the end face portion of the semiconductor wafer is provided between the positioning portions 21 around the rotary base 2. This holding member 4
Are fitted so as to connect the arc-shaped shapes of the positioning portion 21. This holding member 4 is substantially positioned
It is preferable to be provided evenly with the same height as That is, it may be considered that the positioning unit 21 and the holding member 4 form an appropriate outer peripheral frame of the rotating base 2 on the wafer to be mounted.

【0013】上記保持部材4は、例えば、それぞれ重心
がオフセットされた点に設けられるガイドピン41によ
り回転ベース2と接続されている。保持部材4は、この
ガイドピン41を軸として可動状態になっている。これ
により、回転ベース2の遠心力によって一方端側が回転
ベース2の外側に他方端側が回転ベース2の内側に移動
してウェハを保持するようになっている。
The holding member 4 is connected to the rotating base 2 by, for example, guide pins 41 provided at points where the centers of gravity are offset. The holding member 4 is movable around the guide pin 41 as an axis. Thereby, the one end side moves outside the rotation base 2 and the other end side moves inside the rotation base 2 by the centrifugal force of the rotation base 2 to hold the wafer.

【0014】チャック開ピン10は、回転ベース2での
ウェハの出し入れの際、保持部材4を押し開くもので、
例えば、ウェハの搬送部と連動して作動する。なお、位
置決め部21の半円状の切り欠き部211は、ウェハの
出し入れの際、ウェハの搬送部のアームの先端部が一時
的に入る部分である。
The chuck opening pin 10 pushes and opens the holding member 4 when the wafer is taken in and out of the rotating base 2.
For example, it operates in conjunction with a wafer transfer unit. The semicircular notch 211 of the positioning unit 21 is a portion where the tip of the arm of the wafer transfer unit temporarily enters when the wafer is taken in and out.

【0015】上記回転ベース2において、半導体ウェハ
(二点鎖線7で図示)を載せたとき、ウェハの裏面が接
触する位置22からの上記位置決め部21及び保持部材
4の突出高さXmmは、ウェハの端面の厚さをAmmと
すると、 0<X<A+0.5mm を満足するように構成されている。
When a semiconductor wafer (shown by a two-dot chain line 7) is placed on the rotating base 2, the height Xmm at which the positioning portion 21 and the holding member 4 project from a position 22 where the back surface of the wafer contacts is If the thickness of the end face is A mm, then 0 <X <A + 0.5 mm is satisfied.

【0016】すなわち、ウェハを回転ベース2に載せた
とき、位置決め部21及び保持部材4の突出高さがウェ
ハの表面から0.5mmを越えないように構成される。
しかも、均等な高さで回転ベース2の外周枠を構成する
ように設けられているのである。ここでは、より好まし
い一例として位置決め部21及び保持部材4の突出高さ
がウェハの表面より低いようになっている。
That is, when the wafer is placed on the rotating base 2, the protruding height of the positioning portion 21 and the holding member 4 does not exceed 0.5 mm from the surface of the wafer.
In addition, they are provided so as to form the outer peripheral frame of the rotating base 2 at a uniform height. Here, as a more preferable example, the projecting height of the positioning portion 21 and the holding member 4 is set lower than the surface of the wafer.

【0017】このように、位置決め部21及び保持部材
4の突出高さが搭載する半導体ウェハの表面から0.5
mmを越えないように構成されれば、従来技術のように
所々にウェハ保持用のピンが1mm以上突出している構
成に比べて、ウェハの高速回転時、処理液の跳ね返り、
気流の乱れによる処理ムラが抑えられる。また、突出し
たピンでは処理液が溜まり易く、ピンを経由して処理液
がウェハの裏面へ回り込むといった従来の問題も改善さ
れ、処理液がウェハの裏面へ回り込みにくくなった。こ
れにより、製品歩留まりの低下を減少させる。
As described above, the projecting height of the positioning portion 21 and the holding member 4 is set at 0.5 mm from the surface of the semiconductor wafer to be mounted.
mm, the processing solution rebounds during high-speed rotation of the wafer, as compared to a configuration in which pins for holding a wafer protrude more than 1 mm in places as in the related art.
Processing unevenness due to airflow turbulence is suppressed. In addition, the processing liquid easily accumulates on the protruding pins, and the conventional problem that the processing liquid flows to the back surface of the wafer via the pin is also improved, and the processing liquid is less likely to flow to the back surface of the wafer. As a result, a decrease in product yield is reduced.

【0018】図1によれば、さらなる特徴として、上記
回転ベース2の下部において中心軸の周りに例えばN2
ガス供給用のブロック5が設けられている。回転ベース
2には、その内部を貫通しブロック5からのガスが送り
込まれる供給口23が配備されている。ブロック5は回
転ベース2の回転時においても固定されている。6はラ
ビリンスシールを示しており、ガス供給時の漏れを低減
する。
According to FIG. 1, a further feature is that, for example, N 2 around the central axis at the lower part of the rotary base 2
A block 5 for gas supply is provided. The rotary base 2 is provided with a supply port 23 through which the gas from the block 5 is fed. The block 5 is fixed even when the rotation base 2 rotates. Reference numeral 6 denotes a labyrinth seal for reducing leakage at the time of gas supply.

【0019】上記構成によれば、回転ベース2の回転
時、供給口23にブロック5からN2ガスが送り込ま
れ、回転ベース2とウェハの裏面との間の空間の気圧が
高められる構成になっている。
According to the above configuration, when the rotary base 2 rotates, the N 2 gas is sent from the block 5 to the supply port 23 to increase the pressure in the space between the rotary base 2 and the back surface of the wafer. ing.

【0020】なお、回転ベース2の上記位置決め部21
及び保持部材4に隣接した周辺個所22がウェハの裏面
周囲の接触位置に対応する。この周辺個所22から回転
ベース2の中心に向かってはウェハの裏面との接触を避
けるため徐々にウェハとの隔たりが大きくなる。
The positioning portion 21 of the rotary base 2
The peripheral portion 22 adjacent to the holding member 4 corresponds to a contact position around the back surface of the wafer. The distance from the peripheral portion 22 toward the center of the rotary base 2 gradually increases to avoid contact with the back surface of the wafer.

【0021】供給口23は、回転ベース2とウェハの裏
面との間隔が上記回転ベース2の周辺個所22の近傍に
比べて広くなった空間の周辺に設けられる。このような
空間の気圧が高められることによって、処理液のウェハ
の裏面への回り込みを抑える効果はさらに高められる。
The supply port 23 is provided in the periphery of a space where the distance between the rotary base 2 and the back surface of the wafer is wider than the vicinity of the peripheral portion 22 of the rotary base 2. By increasing the air pressure in such a space, the effect of suppressing the processing liquid from flowing around to the back surface of the wafer is further enhanced.

【0022】また、回転ベース2の端面24は上記位置
決め部21または保持部材4の延在を含んで中心軸から
遠ざかる方向にテーパ形状を有している。この形状は、
回転ベース2の回転時、乱気流を低減する作用がある。
換言すれば、ウェハ外周の気流を整流する効果がある。
The end face 24 of the rotary base 2 has a tapered shape in a direction away from the center axis including the positioning portion 21 or the holding member 4. This shape
When the rotation base 2 rotates, it has an effect of reducing turbulence.
In other words, there is an effect of rectifying the airflow around the wafer.

【0023】図2は、図1の点線の円で囲んだF2部分
の、回転ベースの端面と半導体ウェハの保持部材の部分
的な拡大図を示している。保持部材4の突出高さが半導
体ウェハ7の表面より低く構成されている図示しない
が、位置決め部21も同様の突出高さを有するのが好ま
しい。
FIG. 2 is a partially enlarged view of the end face of the rotary base and the holding member for the semiconductor wafer in a portion F2 surrounded by a dotted circle in FIG. Although not shown, the protrusion height of the holding member 4 is lower than the surface of the semiconductor wafer 7, it is preferable that the positioning portion 21 also has the same protrusion height.

【0024】半導体ウェハの厚さは様々で、例えば0.
2mm〜1.0mmといったものがある。これは保持部
材4及び位置決め部21の突出高さが半導体ウェハ7の
表面より低く構成されたものであるが、突出高さがウェ
ハ7の表面と実質同じ高さの状態でもどちらでもこの発
明の効果が得られる。
The thickness of the semiconductor wafer may vary, for example,
There is such as 2 mm to 1.0 mm. Although the projecting height of the holding member 4 and the positioning portion 21 is configured to be lower than the surface of the semiconductor wafer 7, the present invention is applicable to both cases where the projecting height is substantially the same as the surface of the wafer 7. The effect is obtained.

【0025】すなわち、保持部材4及び位置決め部21
がウェハ7の表面より突出しない構成によっても、ウェ
ハの高速回転時、処理液の跳ね返り、気流の乱れによる
処理ムラ、処理液のウェハの裏面への回り込みが抑えら
れる。
That is, the holding member 4 and the positioning portion 21
Does not protrude from the front surface of the wafer 7, even when the wafer rotates at a high speed, the processing liquid rebounds, the processing unevenness due to the turbulence of the air flow, and the processing liquid flowing to the back surface of the wafer are suppressed.

【0026】特に、レジスト塗布に関する処理は、この
ように保持部材4及び位置決め部21がウェハ7の表面
より突出しない構成が望ましい。エッチング、洗浄に関
する処理なら、位置決め部21及び保持部材4の突出高
さがウェハの表面から0.5mmを越えないように構成
すれば、この発明の効果は発揮できる。もちろん、エッ
チング、洗浄に関する処理でも、このように保持部材4
及び位置決め部21がウェハ7の表面より突出しない構
成も好ましい。
In particular, for the processing relating to the resist coating, it is desirable that the holding member 4 and the positioning portion 21 do not protrude from the surface of the wafer 7 as described above. In the case of processing related to etching and cleaning, the effects of the present invention can be exerted if the protruding height of the positioning portion 21 and the holding member 4 does not exceed 0.5 mm from the surface of the wafer. Of course, even in the processing related to etching and cleaning, the holding member 4
A configuration in which the positioning portion 21 does not protrude from the surface of the wafer 7 is also preferable.

【0027】図3は、図1の枚葉処理機構を示す概観図
である。図1と同様の個所には同一の符号を付してい
る。周囲にリフレクタ8、処理ノズル9を示した。ま
た、上部には参考までにウェハ搬送部の一例を簡略化し
て示している。
FIG. 3 is a schematic view showing the single-wafer processing mechanism of FIG. The same parts as those in FIG. 1 are denoted by the same reference numerals. A reflector 8 and a processing nozzle 9 are shown around the periphery. In addition, an example of a wafer transfer unit is simplified in the upper part for reference.

【0028】リフレクタ8は、この枚葉処理機構が納ま
っている図示しないチャンバの内側に、上記回転ベース
2を主に囲むように設けられ、処理液の跳ねを防止しつ
つ排出に導く作用を有する。
The reflector 8 is provided inside the chamber (not shown) in which the single-wafer processing mechanism is housed so as to mainly surround the rotary base 2, and has a function of preventing the processing liquid from jumping and discharging the processing liquid. .

【0029】処理ノズル9は、回転ベース2の上方に設
けられ、ウェハへの処理に対応した物質が送出される。
例えば、この枚葉処理機構が、洗浄処理をするものであ
れば、純水、エッチング処理をするものであればエッチ
ング液、現像処理をするものであれば、なら現像液等で
ある。洗浄とエッチングなど複数の用途を一つのチャン
バで行う枚葉処理機構であれば、処理ノズル9は複数設
けられる。
The processing nozzle 9 is provided above the rotary base 2 and sends out a substance corresponding to processing on a wafer.
For example, if the single-wafer processing mechanism performs a cleaning process, pure water is used. If the single-wafer processing mechanism performs an etching process, the etching solution is used. In the case of a single-wafer processing mechanism that performs a plurality of uses such as cleaning and etching in one chamber, a plurality of processing nozzles 9 are provided.

【0030】ウェハ搬送部は、例えば、3本のアーム1
1a,11b,11cでウェハ7の端面を挟み込み移動
する。ウェハの出し入れの際、位置決め部21の半円状
の切り欠き部211,212,213に、それぞれのア
ーム11a,11b,11cの先端を挿入してウェハを
挟んだり離したりする。
The wafer transfer section includes, for example, three arms 1
The end face of the wafer 7 is sandwiched and moved by 1a, 11b and 11c. When the wafer is taken in and out, the tips of the arms 11a, 11b, and 11c are inserted into the semicircular cutouts 211, 212, and 213 of the positioning unit 21 to sandwich or separate the wafer.

【0031】図4は、図1の回転ベースの分解図であ
る。回転ベース2の下方にはガス供給用のブロック5、
回転駆動部1を示している。位置決め部21は、回転ベ
ース2と一体的に形成されている。保持部材4それぞれ
は、位置決め部21の相互間に円弧状の形を繋ぐように
同じ高さではまり込む。各保持部材4は、重心がオフセ
ットされた開口43を介する上述したガイドピン41に
より回転ベース2と接続され、このガイドピン41を軸
として可動状態となる。
FIG. 4 is an exploded view of the rotation base of FIG. Below the rotary base 2, a block 5 for gas supply,
The rotation drive unit 1 is shown. The positioning part 21 is formed integrally with the rotation base 2. Each of the holding members 4 fits at the same height so as to connect an arc shape between the positioning portions 21. Each holding member 4 is connected to the rotary base 2 by the above-described guide pin 41 through the opening 43 whose center of gravity is offset, and is movable around the guide pin 41 as an axis.

【0032】回転ベース2は、例えば3000rpmで
回転する。各保持部材4は、回転ベース2の回転始動
後、およそ50rpmに達すると、遠心力によって一方
端側が回転ベースの外側に他方端側が回転ベースの内側
に移動してウェハを保持する。このように保持部材4を
作動させるように構成すれば、ウェハの保持に関しては
問題ない。また、処理するウェハの厚さによって保持部
材4の厚さ、あるいは材質を変えることも可能である。
The rotation base 2 rotates at, for example, 3000 rpm. When the rotation of the rotation base 2 reaches about 50 rpm after the rotation of the rotation base 2 is started, one end moves to the outside of the rotation base and the other end moves to the inside of the rotation base by centrifugal force to hold the wafer. If the holding member 4 is configured to operate as described above, there is no problem in holding the wafer. The thickness or material of the holding member 4 can be changed depending on the thickness of the wafer to be processed.

【0033】保持部材4の材質は、セラミック、テフロ
ンが適当である。処理によっては、ウェハに悪影響を与
えなければ金属でもよい場合がある。ガイドピン41の
材質は、セラミック、ステンレスやチタンなどの金属が
考えられる。回転ベース2の材質は、セラミックか樹脂
系(テフロン)が適当である。また、ガス供給用のブロ
ック5の材質は適当に選べばよい。また、供給ガスはN
2 に限らず、処理するウェハに対して不活性とみられる
清浄な空気なら他のガスでもかまわない。
The material of the holding member 4 is suitably ceramic or Teflon. In some processes, metal may be used as long as it does not adversely affect the wafer. The material of the guide pin 41 may be a metal such as ceramic, stainless steel, or titanium. The material of the rotating base 2 is suitably ceramic or resin (Teflon). The material of the gas supply block 5 may be appropriately selected. The supply gas is N
The gas is not limited to 2, and any other gas may be used as long as it is clean air that is considered inert to the wafer to be processed.

【0034】以上のような実施形態の構成によれば、被
処理体である半導体ウェハの高速回転時、乱気流や処理
液の跳ね返り、処理ムラ及び処理液の裏面への回り込み
が抑えられる。この結果、この発明の枚葉処理機構は、
信頼性や歩留まりの低下の原因がなくなるように改善さ
れる。
According to the configuration of the above embodiment, when the semiconductor wafer as the object to be processed is rotated at a high speed, turbulence, rebound of the processing liquid, processing unevenness, and wraparound of the processing liquid to the back surface are suppressed. As a result, the single wafer processing mechanism of the present invention
Improvements are made so as to eliminate the cause of the decrease in reliability and yield.

【0035】[0035]

【発明の効果】以上説明したようにこの発明によれば、
被処理体(ウェハ)の位置決め部とその相互間の保持部
材が、突出高さとして被処理体の表面から0.5mmを
越えない構成とされる。これにより、被処理体の高速回
転時、乱気流や処理液の跳ね返りが抑えられ,信頼性や
歩留まりの低下の原因を大幅に低減した枚葉処理機構が
提供できる。
As described above, according to the present invention,
The positioning portion of the object to be processed (wafer) and the holding member therebetween are configured so that the projecting height does not exceed 0.5 mm from the surface of the object to be processed. Accordingly, when the object to be processed is rotated at a high speed, turbulence and rebound of the processing liquid are suppressed, and a single-wafer processing mechanism can be provided in which the causes of reduction in reliability and yield are greatly reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 この発明の実施形態による枚葉処理機構の要
部の構成図であり、(a)は上から見た平面図、(b)
は横から見た断面図を示す。
FIG. 1 is a configuration diagram of a main part of a single-wafer processing mechanism according to an embodiment of the present invention, where (a) is a plan view as viewed from above, and (b).
Shows a cross-sectional view as viewed from the side.

【図2】図1(b)の一部の拡大図。FIG. 2 is an enlarged view of a part of FIG.

【図3】図1の枚葉処理機構を示す概観図。FIG. 3 is a schematic view showing a single-wafer processing mechanism of FIG. 1;

【図4】図1の回転ベースの分解図。FIG. 4 is an exploded view of the rotation base of FIG. 1;

【図5】ウェハ裏面を真空引きで吸着し、ウェハを固定
する機構を示す従来例であり、(a),(b)はそれぞ
れ、ウェハ裏面の平面図と、横からの概観図。
FIGS. 5A and 5B are a conventional example showing a mechanism for fixing the wafer by sucking the back surface of the wafer by evacuation. FIGS. 5A and 5B are a plan view of the back surface of the wafer and a schematic view from the side.

【図6】ウェハ外周端部を複数のピンにより挟み込み、
ウェハを固定する機構を示す従来例であり、(a),
(b)はそれぞれ、ウェハ表面から見た平面図と、横か
らの概観図。
FIG. 6 is a diagram in which an outer peripheral end portion of a wafer is sandwiched by a plurality of pins;
It is a conventional example showing a mechanism for fixing a wafer.
(B) is a plan view as viewed from the wafer surface and an overview from the side.

【符号の説明】[Explanation of symbols]

1…回転駆動部 2…回転ベース 21…位置決め部 23…ガスが送り込まれる供給口4…保持部材 24…回転ベースの端面 5…ガス供給用のブロック 6…ラビリンスシール 7…半導体ウェハ 8…リフレクタ 9…処理ノズル 10…チャック開ピン DESCRIPTION OF SYMBOLS 1 ... Rotation drive part 2 ... Rotation base 21 ... Positioning part 23 ... Supply port 4 into which gas is sent 4 ... Holding member 24 ... End face of rotation base 5 ... Gas supply block 6 ... Labyrinth seal 7 ... Semiconductor wafer 8 ... Reflector 9 ... Processing nozzle 10 ... Chuck opening pin

Claims (7)

【特許請求の範囲】[Claims] 【請求項1】 回転駆動部と、 前記回転駆動部に中心軸が接続され被処理体を所定位置
に載せるため周辺各所に位置決め部を有した回転ベース
と、 前記回転ベースの周辺において位置決め部の相互間に設
けられた被処理体の端面を保持する保持部材と、 前記回転ベースの上方に設けられ被処理体への処理に対
応した物質が送出される処理ノズルとを具備し、 前記回転ベースにおける被処理体の裏面の接触位置から
の前記位置決め部及び保持部材の突出高さXmmは、被
処理体の端面の厚さをAmmとすると、0<X<A+
0.5mmであることを特徴とする枚葉処理機構。
A rotation drive unit, a rotation base having a center axis connected to the rotation drive unit, and positioning bases at various locations around the rotation base for mounting an object to be processed at a predetermined position; and a rotation base around the rotation base. A holding member for holding an end face of the processing object provided between the processing base and a processing nozzle provided above the rotary base and delivering a substance corresponding to processing on the processing target; The projection height Xmm of the positioning portion and the holding member from the contact position on the back surface of the object to be processed is 0 <X <A +, where Amm is the thickness of the end surface of the object to be processed.
A single-wafer processing mechanism having a thickness of 0.5 mm.
【請求項2】 前記回転ベースの下部において中心軸の
周りに設けられたガス供給用のブロックと、 前記回転ベース内部を貫通し前記ブロックからのガスが
送り込まれる供給口とを具備し、 前記回転ベースと被処理体の裏面との間の空間の気圧が
高められる構成になっていることを特徴とする請求項1
に記載の枚葉処理機構。
2. A rotary power supply, comprising: a block for supplying gas provided around a central axis below the rotary base; and a supply port through which the gas from the block passes through the inside of the rotary base. 2. A structure in which a pressure in a space between the base and the back surface of the object is increased.
2. The single-wafer processing mechanism according to 1.
【請求項3】 前記回転ベースは前記位置決め部及び保
持部材に隣接した周辺個所が被処理体の裏面の接触位置
に対応し、中心に向かっては被処理体の裏面との接触を
避ける形状となっていることを特徴とする請求項1また
は2に記載の枚葉処理機構。
3. The rotating base has a shape in which peripheral portions adjacent to the positioning portion and the holding member correspond to contact positions on the back surface of the object to be processed, and a shape avoiding contact with the back surface of the object to be processed toward the center. The single-wafer processing mechanism according to claim 1 or 2, wherein:
【請求項4】 前記保持部材は前記位置決め部と実質的
に同じ突出高さで設けられることを特徴とする請求項1
ないし3いずれか一つに記載の枚葉処理機構。
4. The device according to claim 1, wherein the holding member is provided at substantially the same height as the positioning portion.
4. The single-wafer processing mechanism according to any one of 3. to 3. above.
【請求項5】 前記位置決め部及び保持部材の突出高さ
が被処理体の表面と実質同じ高さかそれより低いことを
特徴とする請求項1ないし4いずれか一つに記載の枚葉
処理機構。
5. The single-wafer processing mechanism according to claim 1, wherein the projecting height of the positioning portion and the holding member is substantially the same as or lower than the surface of the object to be processed. .
【請求項6】 前記回転ベースの端面は前記位置決め部
または保持部材の延在を含んで中心軸から遠ざかる方向
にテーパ形状を有することを特徴とする請求項1ないし
5いずれか一つに記載の枚葉処理機構。
6. The rotating base according to claim 1, wherein an end face of the rotating base has a tapered shape in a direction away from a central axis including an extension of the positioning portion or the holding member. Single wafer processing mechanism.
【請求項7】 前記保持部材それぞれは重心がオフセッ
トされた1点を軸として可動状態になっており、遠心力
によって一方端側が回転ベースの外側に他方端側が回転
ベースの内側に移動して被処理体を保持することを特徴
とする請求項1ないし6いずれか一つに記載の枚葉処理
機構。
7. Each of the holding members is movable about a point at which the center of gravity is offset, and one end moves to the outside of the rotating base and the other end moves to the inside of the rotating base due to centrifugal force. The single-wafer processing mechanism according to any one of claims 1 to 6, wherein the processing body is held.
JP10091416A 1998-04-03 1998-04-03 Single wafer processing mechanism Abandoned JPH11289002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10091416A JPH11289002A (en) 1998-04-03 1998-04-03 Single wafer processing mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10091416A JPH11289002A (en) 1998-04-03 1998-04-03 Single wafer processing mechanism

Publications (1)

Publication Number Publication Date
JPH11289002A true JPH11289002A (en) 1999-10-19

Family

ID=14025780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10091416A Abandoned JPH11289002A (en) 1998-04-03 1998-04-03 Single wafer processing mechanism

Country Status (1)

Country Link
JP (1) JPH11289002A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004056006A (en) * 2002-07-23 2004-02-19 Dainippon Screen Mfg Co Ltd Device and method for treating substrate
JP2005045287A (en) * 2004-10-28 2005-02-17 Dainippon Screen Mfg Co Ltd Substrate treatment equipment
EP1746639A1 (en) 2005-07-19 2007-01-24 Sumco Corporation Wet etching method of single wafer
EP1777733A2 (en) * 2005-10-18 2007-04-25 Sumco Corporation Apparatus for etching wafer by single-wafer process and single wafer type method for etching wafer
JP5006464B1 (en) * 2011-10-25 2012-08-22 ミクロ技研株式会社 Substrate processing apparatus and substrate processing method
JP2014522127A (en) * 2011-08-11 2014-08-28 ケーエルエー−テンカー コーポレイション Airflow management in systems with high-speed rotating chucks
JP2015138819A (en) * 2014-01-21 2015-07-30 株式会社ディスコ Spinner device
WO2018221166A1 (en) * 2017-05-29 2018-12-06 株式会社Screenホールディングス Substrate processing device and substrate processing method

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JPH0774143A (en) * 1993-08-31 1995-03-17 Dainippon Screen Mfg Co Ltd Substrate holder
JPH0945750A (en) * 1995-07-26 1997-02-14 Hitachi Ltd Holding member of plate object and rotary treatment device with it
JPH09232269A (en) * 1996-02-22 1997-09-05 Dainippon Screen Mfg Co Ltd Rotary substrate treatment device
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JPS6389246U (en) * 1986-12-01 1988-06-10
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JPH06291030A (en) * 1993-03-31 1994-10-18 Dainippon Screen Mfg Co Ltd Substrate rotating and holding device for rotary substrate treatment apparatus
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004056006A (en) * 2002-07-23 2004-02-19 Dainippon Screen Mfg Co Ltd Device and method for treating substrate
JP2005045287A (en) * 2004-10-28 2005-02-17 Dainippon Screen Mfg Co Ltd Substrate treatment equipment
EP1746639A1 (en) 2005-07-19 2007-01-24 Sumco Corporation Wet etching method of single wafer
EP1777733A2 (en) * 2005-10-18 2007-04-25 Sumco Corporation Apparatus for etching wafer by single-wafer process and single wafer type method for etching wafer
EP1777733A3 (en) * 2005-10-18 2009-01-14 Sumco Corporation Apparatus for etching wafer by single-wafer process and single wafer type method for etching wafer
US7488400B2 (en) 2005-10-18 2009-02-10 Sumco Corporation Apparatus for etching wafer by single-wafer process
US8066896B2 (en) 2005-10-18 2011-11-29 Sumco Corporation Apparatus for etching wafer by single-wafer process and single wafer type method for etching wafer
JP2014522127A (en) * 2011-08-11 2014-08-28 ケーエルエー−テンカー コーポレイション Airflow management in systems with high-speed rotating chucks
JP5006464B1 (en) * 2011-10-25 2012-08-22 ミクロ技研株式会社 Substrate processing apparatus and substrate processing method
JP2015138819A (en) * 2014-01-21 2015-07-30 株式会社ディスコ Spinner device
WO2018221166A1 (en) * 2017-05-29 2018-12-06 株式会社Screenホールディングス Substrate processing device and substrate processing method

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