JPH0413868A - Spattering apparatus - Google Patents

Spattering apparatus

Info

Publication number
JPH0413868A
JPH0413868A JP11523790A JP11523790A JPH0413868A JP H0413868 A JPH0413868 A JP H0413868A JP 11523790 A JP11523790 A JP 11523790A JP 11523790 A JP11523790 A JP 11523790A JP H0413868 A JPH0413868 A JP H0413868A
Authority
JP
Japan
Prior art keywords
target
shield
particles
wall
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP11523790A
Other languages
Japanese (ja)
Other versions
JP2617368B2 (en
Inventor
Takashi Akimoto
隆 秋元
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.)
Canon Anelva Corp
Original Assignee
Anelva 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 Anelva Corp filed Critical Anelva Corp
Priority to JP2115237A priority Critical patent/JP2617368B2/en
Publication of JPH0413868A publication Critical patent/JPH0413868A/en
Application granted granted Critical
Publication of JP2617368B2 publication Critical patent/JP2617368B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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

Abstract

PURPOSE:To restrain the generation of minute particles and to extend the period of maintenance by forming the inner wall of target shield facing the target so as to be almost perpendicular to the advancing direction of the particles, flying from the vicinity of the peripheral rim part of the target. CONSTITUTION:In a vacuum vessel, negative potential is impressed to a cathode 6 to spatter the target 3 mounted thereon to form film on the base plate 2, held by the base plate holder 4 disposed to face the target. In this case, a target shield 1 is disposed in the upper part of the target 3 so that only the particles flying from the target 3 to the base plate 2 are collided with the base plate 2, and the particles flying from other direction is stuck to the wall of the target shield 1. In the above-mentioned spattering apparatus, the inner wall 1a of the target shield 1 facing the target 3 is made to have such a surface of the shape that the target particles flying from the upper surface 3a of the peripheral rim part of the target 3 are collided almost at right angles. By this method, the target shield 1 is made to have small surface which makes the washing and regeneration easy, and the generated film is prevented from being exfoliated, and the generation of minute particles are restrained, thus the period of maintenance is extended.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は真空容器中で基板表面に膜を形成させるスパッ
タリング装置、さらに詳しくいえば、スパッタリングの
際、当該装置内に発生する微少粒子(パーティクル)の
低減化と保守の改善を考慮したスパッタリング装置に関
する。
Detailed Description of the Invention (Industrial Application Field) The present invention relates to a sputtering device for forming a film on a substrate surface in a vacuum container, and more specifically, to a sputtering device for forming a film on a substrate surface in a vacuum container. This invention relates to a sputtering device that takes into consideration the reduction in the amount of water ( ) and the improvement of maintenance.

(従来の技術) まず最初に従来のスパッタリング装置の構成を説明する
(Prior Art) First, the configuration of a conventional sputtering apparatus will be explained.

第3図は従来のスパッタリング装置の一例を示す概略断
面図である。
FIG. 3 is a schematic cross-sectional view showing an example of a conventional sputtering apparatus.

真空容器9の中央部に基板ホルダ4に保持された基板2
が配置されている。
A substrate 2 held by a substrate holder 4 in the center of a vacuum container 9
is located.

この基板2に対面してターゲット3を搭載したカソード
6が設けられている。カソード6の外縁部は容器9に部
材11.12を介して固定されており、カソード6の外
縁部1部材11.12および容器9との間はOリング8
によって気密性が確保されている。
A cathode 6 on which a target 3 is mounted is provided facing the substrate 2. The outer edge of the cathode 6 is fixed to the container 9 via a member 11.12, and an O-ring 8 is connected between the outer edge 1 member 11.12 of the cathode 6 and the container 9.
Airtightness is ensured.

ターゲット3と基板2との間に所定の開口部10aを有
するターゲットシールド10がターゲット3を覆うよう
に配置されている。開口部10aは基板2方向に進行す
るターゲット粒子のみ通すような大きさおよび形状とな
っている。他の方向に進行するターゲット粒子はターゲ
ットシールド10の内壁に付着する。
A target shield 10 having a predetermined opening 10a is arranged between the target 3 and the substrate 2 so as to cover the target 3. The opening 10a has a size and shape that allows only target particles traveling toward the substrate 2 to pass therethrough. Target particles traveling in other directions adhere to the inner wall of the target shield 10.

また、基板2とほぼ同じ高さに基板2を囲むようにチェ
ンバシールド5が容器9に取りつけられている。このチ
ェンバシールド5はターゲットシールド10にも基板3
にも付着しないターゲット粒子が容器内の上に抜は出な
いように阻止するためのものである。
Further, a chamber shield 5 is attached to the container 9 so as to surround the substrate 2 at approximately the same height as the substrate 2. This chamber shield 5 also serves as the target shield 10 and the substrate 3.
This is to prevent target particles that do not adhere to the inside of the container from slipping out onto the top of the container.

カソード6には外部に繋がるポート6a、6bを有する
空洞部が形成されており、冷却水を循環させることによ
りターゲット6部分に発生する予熱を放散している。
A cavity having ports 6a and 6b connected to the outside is formed in the cathode 6, and preheat generated in the target 6 portion is dissipated by circulating cooling water.

(発明が解決しようとする課題) ところで、ターゲットシールド10はターゲ・ノド3の
近傍に位置することから最も膜付着量が多い。そのため
、一定の付着圧に達すると膜剥離を起こしやすく、特に
垂直を成す面の剥離が顕著に見られる。
(Problems to be Solved by the Invention) By the way, since the target shield 10 is located near the target throat 3, it has the largest amount of film adhesion. Therefore, when a certain adhesion pressure is reached, film peeling tends to occur, and peeling is particularly noticeable on vertical surfaces.

この理由は明らかでないが、ターゲ・ノドシールドの近
傍のターゲツト面から飛来するターゲ・ノド粒子が斜め
方向から付着しその膜の堆積過程において何等かのはが
れ要素を持つものと考えられる。
The reason for this is not clear, but it is thought that target nod particles flying from the target surface near the target nod shield adhere from an oblique direction and have some kind of peeling element during the film deposition process.

上記剥離を起こすと微少粒子発生の主原因になる。した
がって、できれば基板以外にはスノマ・ツタ膜を付着さ
せない方が良い。
If the above-mentioned peeling occurs, it becomes the main cause of generation of microparticles. Therefore, if possible, it is better not to attach the Sunoma ivy film to anything other than the substrate.

しかしながら、装置構成上、そのような構成を採用する
のは不可能である。
However, it is impossible to adopt such a configuration due to the device configuration.

そこで、基板以外に付着するターゲ・ノドシールドのス
パッタ膜は洗浄、再生作業を容易にするために小面積と
し、また、保守周期より定められた一定の付着厚さに達
しても膜剥離を起こさないような対策が望まれる。
Therefore, the sputtered film of the target/nod shield that adheres to areas other than the substrate has a small area to facilitate cleaning and regeneration work, and the film does not peel off even if it reaches a certain adhesion thickness determined by the maintenance cycle. It is desirable to take measures to avoid this.

本発明の目的は上記要請に応えるもので、ターゲットシ
ールドに付着するターゲ・ノド粒子により形成される膜
の剥離による微少粒子の発生を抑え、これにより保守周
期が延長できるとともに、ターゲットシールドの洗浄、
再生作業も従来に比較しく3) 簡単になるスパッタリング装置を提供することにある。
The purpose of the present invention is to meet the above-mentioned requirements, and suppresses the generation of microparticles due to peeling of the film formed by target nod particles adhering to the target shield, thereby extending the maintenance cycle, as well as cleaning the target shield.
3) An object of the present invention is to provide a sputtering device that makes regeneration work easier than before.

(課題を解決するための手段) 前記目的を達成するために本発明によるスパッタリング
装置は真空容器中にターゲットを搭載した負電極と基板
ホルダに保持した基板とを対面させ、前記負電極に負電
圧を印加することにより前記ターゲットをスパッタリン
グして前記基板に膜を形成するようにし、前記ターゲッ
トから前記基板の方向に飛来するターゲット粒子のみが
前記基板に当たり、他の方向に飛来するターゲット粒子
はクーゲットシールドの壁に付着させるように前記ター
ゲットの上部にターゲットシールドを設けたスパッタリ
ング装置において、前記ターゲットシールドの前記ター
ゲットに対面する内壁を、前記ターゲットの周縁部付近
から飛来するターゲット粒子の進行方向に対し略直角の
面になるような形状にして構成しである。
(Means for Solving the Problems) In order to achieve the above object, a sputtering apparatus according to the present invention has a negative electrode in which a target is mounted in a vacuum container and a substrate held in a substrate holder face each other, and a negative voltage is applied to the negative electrode. is applied to sputter the target to form a film on the substrate, and only target particles flying from the target toward the substrate hit the substrate, and target particles flying in other directions are sputtered. In a sputtering apparatus in which a target shield is provided above the target so as to be attached to the wall of the shield, an inner wall of the target shield facing the target is arranged with respect to the traveling direction of target particles flying from near the periphery of the target. It is configured to have a shape that is a substantially right-angled surface.

このような構成によれば、上述の問題はすべて解決され
る。
According to such a configuration, all of the above-mentioned problems are solved.

(実施例) 以下、図面を参照して本発明をさらに詳しく説明する。(Example) Hereinafter, the present invention will be explained in more detail with reference to the drawings.

第1図は本発明よるスパッタリング装置の実施例を示す
概略断面図である。
FIG. 1 is a schematic cross-sectional view showing an embodiment of a sputtering apparatus according to the present invention.

本実施例は従来例の装置とはターゲットシールドおよび
その付近の形状が異なっており、他の部分は従来例と変
わるところはない。
This embodiment differs from the conventional device in the shape of the target shield and its vicinity, but the other parts are the same as the conventional device.

したがって、従来例で説明した共通する部分の説明は省
略する。
Therefore, the explanation of the common parts explained in the conventional example will be omitted.

従来例ではカソード6に搭載されるターゲット3は部材
14に取りつけられ、この部材14をカソード6にビス
13で固定することにより、カソード6に固定されてい
るが、本発明ではカソード6を固定するための部材14
が取り除かれており、この部分までターゲットシールド
1を進出させた構造としている。
In the conventional example, the target 3 mounted on the cathode 6 is attached to a member 14, and this member 14 is fixed to the cathode 6 by fixing it with screws 13, but in the present invention, the cathode 6 is fixed. member 14 for
has been removed, and the target shield 1 extends to this part.

第2図はターゲットシールドおよびターゲットの端部付
近の拡大部分断面図である。
FIG. 2 is an enlarged partial cross-sectional view of the target shield and the vicinity of the end of the target.

ターゲットシールド1の内壁面はターゲット3の端部上
面3aから飛来するターゲット粒子の進行してくる方向
に対し略直角になるような形状にしである。したがって
、ターゲット粒子がターゲットシールド1に被着する角
度は内壁に対し直角関係になっている。
The inner wall surface of the target shield 1 is shaped to be approximately perpendicular to the direction in which target particles flying from the upper end surface 3a of the target 3 travel. Therefore, the angle at which the target particles adhere to the target shield 1 is perpendicular to the inner wall.

ターゲット3の3a部近辺のターゲット上面もターゲッ
トシールド1の内壁に対し略同様な関係になっている。
The upper surface of the target near portion 3a of the target 3 also has substantially the same relationship with the inner wall of the target shield 1.

ターゲット3の中央部付近表面からもターゲットシール
ド1の内壁に飛来するが、方向がターゲット垂直軸に対
し大きな角度となるので、垂直方向に飛ぶターゲット粒
子に比較し少なく、また、ターゲットシールド内壁面ま
で飛行する距離が大きいことから、中央部付近から飛来
するターゲット粒子は非常に少ない。
Although some particles also fly to the inner wall of the target shield 1 from the surface near the center of the target 3, since the direction is at a large angle to the vertical axis of the target, there are fewer target particles than those flying in the vertical direction. Because the distance traveled is long, there are very few target particles flying from near the center.

これに対しターゲット3の端部付近はターゲットシール
ド内壁に対し距離も短く、ターゲットの垂直軸に対し小
さい角度方向にターゲットシールド内壁があることから
、ターゲット内壁に膜を形成するターゲット粒子はター
ゲット3の端部付近から飛来するターゲット粒子が大部
分である。
On the other hand, near the end of the target 3, the distance from the inner wall of the target shield is short and the inner wall of the target shield is at a small angle with respect to the vertical axis of the target, so the target particles forming a film on the inner wall of the target are Most of the target particles come from near the edges.

そのため、ターゲットシールド1に形成される膜はター
ゲット3の端部付近から飛来するターゲ・ノド粒子によ
ってであり、殆どがターゲ・ノドシールド1の内壁に対
し略直角に当たる。
Therefore, the film formed on the target shield 1 is caused by target nodule particles flying from near the end of the target 3, and most of them hit the inner wall of the target nodule shield 1 at a substantially right angle.

なお、カソード6に発生する熱はポート6a。Note that the heat generated in the cathode 6 is transmitted through the port 6a.

6bを介して冷却水を循環させることにより放熱してい
る。
Heat is radiated by circulating cooling water through 6b.

(発明の効果) 本発明は以上説明したような構成を採用しているので、
従来のターゲットシールドの内壁面の面積に比較し、少
ない面積となっている。そのため、洗浄再生作業が容易
となるという効果がある。また、ターゲット粒子のほと
んどが内壁に対し略直角方向から付着するので、従来に
比較しはがれに<<、膜剥離にともなうパーティクルの
発生を極力抑えることができる。
(Effect of the invention) Since the present invention employs the configuration as explained above,
The area is smaller than the area of the inner wall surface of conventional target shields. Therefore, there is an effect that cleaning and regeneration work becomes easier. Furthermore, since most of the target particles adhere to the inner wall from a direction substantially perpendicular to the inner wall, it is possible to suppress the generation of particles due to peeling off as much as possible compared to the conventional method.

そのため、形成される膜厚が相当厚くなっても膜剥離が
生じないので、保守周期の延長も可能になるという効果
がある。
Therefore, even if the formed film becomes considerably thick, the film does not peel off, so there is an effect that the maintenance cycle can be extended.

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

第1図は本発明によるスパッタリング装置の実施例を示
す概略断面図、第2図はターゲットシールド付近を示す
拡大部分断面図、第3図は従来のスパッタリング装置の
一例を示す概略断面図である。 1.10・・・ターゲットシールド 2・・・基板 3・・・ターゲット 4・・・基板ホルダ 5・・・チェンバシールド 6・・・カソード(負電極) 8・・・0リング 11.12・・・部材 特許出願人 日電アネルバ株式会社 代理人 弁理士   井ノロ 壽
FIG. 1 is a schematic sectional view showing an embodiment of a sputtering apparatus according to the present invention, FIG. 2 is an enlarged partial sectional view showing the vicinity of a target shield, and FIG. 3 is a schematic sectional view showing an example of a conventional sputtering apparatus. 1.10... Target shield 2... Substrate 3... Target 4... Substrate holder 5... Chamber shield 6... Cathode (negative electrode) 8... 0 ring 11.12...・Parts patent applicant: Nichiden Anelva Co., Ltd. Patent attorney: Hisashi Inoro

Claims (1)

【特許請求の範囲】[Claims]  真空容器中にターゲットを搭載した負電極と基板ホル
ダに保持した基板とを対面させ、前記負電極に負電圧を
印加することにより前記ターゲットをスパッタリングし
て前記基板に膜を形成するようにし、前記ターゲットか
ら前記基板の方向に飛来するターゲット粒子のみが前記
基板に当たり、他の方向に飛来するターゲット粒子はタ
ーゲットシールドの壁に付着させるように前記ターゲッ
トの上部にターゲットシールドを設けたスパッタリング
装置において、前記ターゲットシールドの前記ターゲッ
トに対面する内壁を、前記ターゲットの周縁部付近から
飛来するターゲット粒子の進行方向に対し略直角の面に
なるような形状にしたことを特徴とするスパッタリング
装置。
A negative electrode carrying a target in a vacuum container and a substrate held in a substrate holder are made to face each other, and a negative voltage is applied to the negative electrode to sputter the target and form a film on the substrate; In the sputtering apparatus, a target shield is provided above the target so that only target particles flying from the target in a direction toward the substrate hit the substrate, and target particles flying in other directions are attached to a wall of the target shield. A sputtering apparatus characterized in that an inner wall of a target shield facing the target is shaped to be a surface substantially perpendicular to the traveling direction of target particles flying from near the peripheral edge of the target.
JP2115237A 1990-05-02 1990-05-02 Sputtering equipment Expired - Fee Related JP2617368B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2115237A JP2617368B2 (en) 1990-05-02 1990-05-02 Sputtering equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2115237A JP2617368B2 (en) 1990-05-02 1990-05-02 Sputtering equipment

Publications (2)

Publication Number Publication Date
JPH0413868A true JPH0413868A (en) 1992-01-17
JP2617368B2 JP2617368B2 (en) 1997-06-04

Family

ID=14657739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2115237A Expired - Fee Related JP2617368B2 (en) 1990-05-02 1990-05-02 Sputtering equipment

Country Status (1)

Country Link
JP (1) JP2617368B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5419029A (en) * 1994-02-18 1995-05-30 Applied Materials, Inc. Temperature clamping method for anti-contamination and collimating devices for thin film processes
US5421956A (en) * 1991-11-20 1995-06-06 Nippondenso Co., Ltd. Method of fabricating an integrated pressure sensor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58497U (en) * 1981-06-26 1983-01-05 株式会社日立製作所 Earth shield plate
JPS58104182A (en) * 1981-12-14 1983-06-21 Fujitsu Ltd Sputtering device
JPS60140761U (en) * 1984-02-29 1985-09-18 ホ−ヤ株式会社 Magnetron sputtering equipment
JPS61163271A (en) * 1985-01-10 1986-07-23 Mitsubishi Electric Corp Jig for sputtering apparatus
JPS6339164U (en) * 1986-08-25 1988-03-14

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58497U (en) * 1981-06-26 1983-01-05 株式会社日立製作所 Earth shield plate
JPS58104182A (en) * 1981-12-14 1983-06-21 Fujitsu Ltd Sputtering device
JPS60140761U (en) * 1984-02-29 1985-09-18 ホ−ヤ株式会社 Magnetron sputtering equipment
JPS61163271A (en) * 1985-01-10 1986-07-23 Mitsubishi Electric Corp Jig for sputtering apparatus
JPS6339164U (en) * 1986-08-25 1988-03-14

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5421956A (en) * 1991-11-20 1995-06-06 Nippondenso Co., Ltd. Method of fabricating an integrated pressure sensor
US5528214A (en) * 1991-11-20 1996-06-18 Nippondenso Co., Ltd. Pressure-adjusting device for adjusting output of integrated pressure sensor
US5419029A (en) * 1994-02-18 1995-05-30 Applied Materials, Inc. Temperature clamping method for anti-contamination and collimating devices for thin film processes
US5598622A (en) * 1994-02-18 1997-02-04 Applied Materials, Inc. Temperature clamping method for anti-contamination and collimating devices for thin film processes
US5755936A (en) * 1994-02-18 1998-05-26 Applied Materials, Inc Temperature clamped anti-contamination and collimating devices for thin film processes

Also Published As

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