JPH04154121A - Sputtering apparatus - Google Patents

Sputtering apparatus

Info

Publication number
JPH04154121A
JPH04154121A JP27977490A JP27977490A JPH04154121A JP H04154121 A JPH04154121 A JP H04154121A JP 27977490 A JP27977490 A JP 27977490A JP 27977490 A JP27977490 A JP 27977490A JP H04154121 A JPH04154121 A JP H04154121A
Authority
JP
Japan
Prior art keywords
chamber
semiconductor substrate
substrate
oxygen gas
plasma
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
JP27977490A
Other languages
Japanese (ja)
Inventor
Terukazu Motosawa
本沢 輝一
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.)
NEC Yamagata Ltd
Original Assignee
NEC Yamagata 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 NEC Yamagata Ltd filed Critical NEC Yamagata Ltd
Priority to JP27977490A priority Critical patent/JPH04154121A/en
Publication of JPH04154121A publication Critical patent/JPH04154121A/en
Pending legal-status Critical Current

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  • Physical Vapour Deposition (AREA)
  • Drying Of Semiconductors (AREA)
  • Physical Deposition Of Substances That Are Components Of Semiconductor Devices (AREA)

Abstract

PURPOSE:To clean an etching chamber without returning it to the atmosphere by a method wherein oxygen gas is introduced into the chamber and changed to plasma ions and a means to remove a contamination which has adhered to its inside wall is installed. CONSTITUTION:First, a semiconductor substrate on which a mask has been formed is housed in an etching chamber 5 from a load-lock chamber 4 by using a conveyance manipulator installed in a separator chamber 3; it is plasma-etched at a high frequency; and a metal film on the substrate is etched selectively. Then, it is confirmed that the substrate has been treated; and the treated substrate is returned again to the lock chamber 4 by using the manipulator. After that, other substrates are transferred again to the chamber 5 from the lock chamber 4; and they are treated. When the treatment number has reached the prescribed number of wafers, the chamber 5 is set to an empty state and is evacuated until a prescribed degree of vacuum is obtained. After that, a cutoff valve 9 is opened; the flow rate of oxygen gas is instructed to a valve 8 by using a mass-flow controller 7; the gas is fed into the chamber 5; a plasma is generated at a high frequency; the gas is changed to ions; and a metal which has adhered is removed.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、半導体基板にスパッタリングするとともにド
ライエツチングを行う高周波プラズマエツチング室付き
のスパッタリング装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sputtering apparatus equipped with a high frequency plasma etching chamber for sputtering and dry etching a semiconductor substrate.

〔従来の技術〕[Conventional technology]

従来、この種のスパッタリング装置は、図面には示さな
いが、半導体基板に金属膜を被着するスパッタリング室
と、これら金属膜を選択的に除去する高周波プラズマエ
ツチング室と、これら各室に大気に戻すことなく半導体
基板を収納させるための予備真空室であるロードロック
室とを有していた。
Conventionally, this type of sputtering equipment has a sputtering chamber for depositing a metal film on a semiconductor substrate, a high-frequency plasma etching chamber for selectively removing the metal film, and an air vent for each of these chambers (not shown in the drawings). It had a load-lock chamber as a preliminary vacuum chamber for storing semiconductor substrates without returning them.

このスパッタリング装置で、半導体基板に回路パターン
を形成する場合には、半導体基板をまずロードロック室
に収納し、所定の真空に排気した、ロードロック室のゲ
ートバルブを開いて、スパッタリング室に半導体基板を
搬送する0次に、スパッタリング室で半導体基板に金属
膜を形成し、スパッタリング室より半導体基板を取出す
When forming a circuit pattern on a semiconductor substrate using this sputtering equipment, the semiconductor substrate is first stored in a load-lock chamber, the gate valve of the load-lock chamber is evacuated to a predetermined vacuum level, and the semiconductor substrate is placed in the sputtering chamber. Next, a metal film is formed on the semiconductor substrate in a sputtering chamber, and the semiconductor substrate is taken out from the sputtering chamber.

一方、この作業中に、ロードロック室には金属膜上にマ
スクが形成された別の半導体基板が収納されている。
Meanwhile, during this work, another semiconductor substrate with a mask formed on a metal film is stored in the load lock chamber.

次に、前述取り出された半導体基板を別の装置で、金属
膜が形成された半導体基板上にマスクを形成する。また
、先にロードロック室に収容された別の半導体基板を高
周波プラズマエツチング室に大気に戻すことなく搬送す
る。次に、新にマスクが形成された半導体基板をロード
ロック室に収納するとともに高周波プラズマエツチング
室に収納された半導体基板を選択的にエツチングし、回
路パターンを形成する。
Next, using another device, a mask is formed on the semiconductor substrate on which the metal film is formed. Further, another semiconductor substrate previously accommodated in the load lock chamber is transferred to the high frequency plasma etching chamber without being returned to the atmosphere. Next, the semiconductor substrate on which the mask has been newly formed is placed in a load lock chamber, and the semiconductor substrate placed in the high frequency plasma etching chamber is selectively etched to form a circuit pattern.

このように、このスパッタリング装置は、金属膜形成、
マスク形成及び選択的エツチングという一連の作業を行
っていた。また、プラズマエツチング室はエツチングの
際に、半導体基板より除去された金属が室内の壁に付着
するので、半導体基板の処理を何枚を行った後、室内に
大気を導入し、作業者が清掃していた。
In this way, this sputtering device is capable of forming metal films,
A series of operations including mask formation and selective etching were performed. In addition, during etching in a plasma etching chamber, metal removed from semiconductor substrates adheres to the walls of the chamber, so after processing several semiconductor substrates, atmospheric air is introduced into the chamber and workers clean the chamber. Was.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述した従来のスパッタリング装置では、スリニングの
たびに高周波スプリングエツチング室を大気にしなけれ
ばならず、その後の立上げに時間がかかるという欠点が
ある。また、大気にしたことによって塵埃が室内に侵入
するという欠点もある。
The above-mentioned conventional sputtering apparatus has the disadvantage that the high frequency spring etching chamber must be exposed to the atmosphere every time thinning is performed, and subsequent startup takes time. Another drawback is that dust can enter the room due to the atmosphere.

本発明の目的は、かかる欠点を解消すべく、室内に大気
に戻すことなく室内を清掃出来るスバ・ンタリング装置
を提供することにある。
SUMMARY OF THE INVENTION In order to eliminate such drawbacks, it is an object of the present invention to provide a vacuum cleaner that can clean a room without returning the room to the atmosphere.

〔課題を解決するための手段〕[Means to solve the problem]

本発明のスパッタリング装置は、高周波プラズマエツチ
ング室と、スパッタリング室とを備えるスパッタリング
装置において、前記高周波プラズマエツチング室に酸素
ガスを導入する配管及び仕切弁と、この室内の酸素の圧
力を一定に保つ圧力制御弁とを備え、前記高周波プラズ
マを発生し、前蟇室内を清掃することを特徴としている
The sputtering apparatus of the present invention includes a high-frequency plasma etching chamber and a sputtering chamber, and includes piping and a gate valve for introducing oxygen gas into the high-frequency plasma etching chamber, and a pressure for keeping the oxygen pressure in the chamber constant. The device is characterized in that it includes a control valve, generates the high-frequency plasma, and cleans the inside of the antenatal chamber.

〔実施例〕〔Example〕

次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

第1図は本発明の一実施例を示すスパッタリング装置の
ブロック図である。このスパッタリング装置は、同図に
示すように、エツチング室5に配管を介し、て接続され
る酸素ガスを導入するカットオフバルブ9と、酸素ガス
の流量を制御するマスフローバルブ8と、このマスフロ
ーバルブを室内の圧力を圧力計6で検出し制御するマス
フローコントローラ7とを設けたことである。それ以外
は従来例と同じである。
FIG. 1 is a block diagram of a sputtering apparatus showing an embodiment of the present invention. As shown in the figure, this sputtering apparatus includes a cut-off valve 9 connected to the etching chamber 5 via piping for introducing oxygen gas, a mass flow valve 8 for controlling the flow rate of the oxygen gas, and a mass flow valve 8 for controlling the flow rate of the oxygen gas. A mass flow controller 7 is provided to detect and control the indoor pressure using a pressure gauge 6. Other than that, it is the same as the conventional example.

第2図は第1図のスパッタリング装置の動作を説明する
ための流れ図である。まず、〔始〕により、マスクが形
成された半導体基板が、セパレータ室3にある搬送マニ
ュプレータにより、ロードロック室4からエツチング室
5に収納される0次に、〔製品処理〕により、高周波プ
ラズマエツチングされ、半導体基板上の金属膜が選択エ
ツチングされる0次に、判断機能〔処理ENDEで、半
導体基板が処理されたことを確認する0次に、処理済み
の半導体基板はマニュプレータによりロードロック室4
に搬送される0次に、再び、ロードロック室4より別の
半導体基板がエツチング室5に移送され、処理される。
FIG. 2 is a flowchart for explaining the operation of the sputtering apparatus shown in FIG. 1. First, in the [start], the semiconductor substrate on which the mask is formed is transferred from the load lock chamber 4 to the etching chamber 5 by the transport manipulator in the separator chamber 3. Next, in the [product processing], the semiconductor substrate is subjected to high-frequency plasma etching. Then, the metal film on the semiconductor substrate is selectively etched.Next, the judgment function [process ENDE] confirms that the semiconductor substrate has been processed.Next, the processed semiconductor substrate is transferred to the load lock chamber 4 by a manipulator.
Next, another semiconductor substrate is transferred from the load lock chamber 4 to the etching chamber 5 and processed.

次に、〔処理枚数一定態上か?〕で、エツチング処理さ
れた数が所定の枚数に達したら、エツチング室5の空室
の状態にし、所定の真空度に排気した後に、CO2プラ
ズマクリーニング〕で、カットオフバルブ9を開き、マ
スフローコントローラ7によりマスフローバルブ8に酸
素ガスの流量を指令し、酸素ガスをエツチング室5に導
入する。また、このとき、圧力計6は室内の酸素ガス圧
力を一定にする。次に、高周波電源により電極に印加し
、プラズマを発生し、酸素ガスをイオン化し、内壁に付
着した金属を除去し、酸素ガスもらとも室外に排気する
。次に、所定の時間経過後、再び〔始〕で処理作業を開
始する。
Next, [Is the number of sheets processed constant? ] When the number of etched sheets reaches a predetermined number, the etching chamber 5 is made empty and evacuated to a predetermined degree of vacuum, and then the cut-off valve 9 is opened in the CO2 plasma cleaning], and the mass flow controller is 7 instructs the mass flow valve 8 to control the flow rate of oxygen gas, and introduces the oxygen gas into the etching chamber 5. Moreover, at this time, the pressure gauge 6 keeps the oxygen gas pressure in the room constant. Next, a high frequency power source is applied to the electrodes to generate plasma, ionize the oxygen gas, remove metal adhering to the inner wall, and exhaust the oxygen gas to the outside. Next, after a predetermined period of time has elapsed, the processing operation is started again at [start].

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、室内に酸素ガスを導入し
、プラズマイオン化し、内壁に付着する汚れを除去する
手段を設けることによって、エツチング室を大気に戻す
ことなくクリーニングを行なうことができるスパッタリ
ング装置が得られるという効果がある。
As explained above, the present invention provides a sputtering method that can clean the etching chamber without returning it to the atmosphere by introducing oxygen gas into the chamber, ionizing the plasma, and removing dirt adhering to the inner wall. This has the effect of providing a device.

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

第1図は本発明の一例を示すスパッタリング装置のブロ
ック図、第2図は第1図のスパッタリング装置の動作を
説明するための流れ図である。 1.2・・・スパッタリング図、3・・・セパレート室
、4・・・ロードロック室、5・・・エツチング室、6
・・・圧力計、7・・・マスフローコントローラ、8・
・・マスフローバルブ、9・・・カットバルブ。
FIG. 1 is a block diagram of a sputtering apparatus showing an example of the present invention, and FIG. 2 is a flowchart for explaining the operation of the sputtering apparatus of FIG. 1. 1.2...Sputtering diagram, 3...Separate chamber, 4...Load lock chamber, 5...Etching chamber, 6
...Pressure gauge, 7...Mass flow controller, 8.
...Mass flow valve, 9...Cut valve.

Claims (1)

【特許請求の範囲】[Claims]  高周波プラズマエッチング室と、スパッタリング室と
を備えるスパッタリング装置において、前記高周波プラ
ズマエッチング室に酸素ガスを導入する配管及び仕切弁
と、この室内の酸素の圧力を一定に保つ圧力制御弁とを
備え、前記高周波プラズマを発生し、前記室内を清掃す
ることを特徴とするスパッタリング装置。
A sputtering apparatus comprising a high frequency plasma etching chamber and a sputtering chamber, comprising piping and a gate valve for introducing oxygen gas into the high frequency plasma etching chamber, and a pressure control valve for keeping the pressure of oxygen in the chamber constant; A sputtering apparatus characterized in that the chamber is cleaned by generating high-frequency plasma.
JP27977490A 1990-10-18 1990-10-18 Sputtering apparatus Pending JPH04154121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27977490A JPH04154121A (en) 1990-10-18 1990-10-18 Sputtering apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27977490A JPH04154121A (en) 1990-10-18 1990-10-18 Sputtering apparatus

Publications (1)

Publication Number Publication Date
JPH04154121A true JPH04154121A (en) 1992-05-27

Family

ID=17615731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27977490A Pending JPH04154121A (en) 1990-10-18 1990-10-18 Sputtering apparatus

Country Status (1)

Country Link
JP (1) JPH04154121A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012197518A (en) * 2007-03-22 2012-10-18 Semiconductor Energy Lab Co Ltd Film-forming apparatus, and cleaning method of mask using the same
CN113265640A (en) * 2020-01-29 2021-08-17 佳能特机株式会社 Film forming apparatus and electronic device manufacturing apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012197518A (en) * 2007-03-22 2012-10-18 Semiconductor Energy Lab Co Ltd Film-forming apparatus, and cleaning method of mask using the same
CN113265640A (en) * 2020-01-29 2021-08-17 佳能特机株式会社 Film forming apparatus and electronic device manufacturing apparatus

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