JP2010185124A - Vapor deposition method and vapor deposition apparatus - Google Patents

Vapor deposition method and vapor deposition apparatus Download PDF

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JP2010185124A
JP2010185124A JP2009031666A JP2009031666A JP2010185124A JP 2010185124 A JP2010185124 A JP 2010185124A JP 2009031666 A JP2009031666 A JP 2009031666A JP 2009031666 A JP2009031666 A JP 2009031666A JP 2010185124 A JP2010185124 A JP 2010185124A
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vapor deposition
film substrate
plasma
film
substrate
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Hideaki Takeuchi
英明 竹内
Mitsuru Iwata
充 岩田
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Fujifilm Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a vapor deposition method with which adhesion between a substrate film and a vapor deposition drum can be improved, and further, the damage of the substrate film caused by vapor deposition heat can be prevented, at a low cost, and to provide a vapor deposition apparatus. <P>SOLUTION: In the method where, using a hollow cathode type plasma gun 3, plasma-assisted vapor deposition is performed to a film substrate 9 conveyed on a vapor deposition drum 5, at a preliminary stage before a vapor deposition material is vapor-deposited on the film substrate 9, electrons are taken out from the plasma by an electron acceleration electrode 2, and the substrate 9 is electrified with the electrons. The apparatus includes: the hollow cathode type plasma gun 3 for performing plasma-assisted vapor deposition; the vapor deposition drum 5 conveying the film substrate 9; and the electron acceleration electrode 2, at a preliminary stage before the vapor deposition material is vapor-deposited on the film substrate 9, for taking out electrons from the plasma so as to electrify the film substrate 9 with the electrons. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、蒸着方法及び蒸着装置に関し、特に、低コストで、基板フィルムと蒸着ドラムの密着性を高め、蒸着熱による基板フィルムのダメージを防止できる蒸着方法及び蒸着装置に関する。   The present invention relates to a vapor deposition method and a vapor deposition apparatus, and more particularly, to a vapor deposition method and a vapor deposition apparatus that can increase the adhesion between a substrate film and a vapor deposition drum and prevent damage to the substrate film due to vapor deposition heat at low cost.

従来より、酸化物膜等の薄膜の成膜装置として蒸着装置が広く使われている。また最近では、ホローカソード型プラズマガンや、圧力勾配型プラズマガン等のプラズマガンを備え、アーク放電により発生したプラズマ流を原料まで導いて原料を加熱したり、該プラズマ流の高い反応性を利用してイオンプレーティングを高速に行う蒸着装置が開発されている。
また、このような蒸着装置は、長尺状の被蒸着基板を、送出ロールから送出し、円筒状の蒸着ドラムに巻付け、巻取ロールにて巻取る基板搬送機構を有し、蒸着ドラム上を搬送されている基板の表面に蒸着製膜を施す態様を採っている。
Conventionally, a vapor deposition apparatus has been widely used as a film forming apparatus for a thin film such as an oxide film. Recently, plasma guns such as hollow cathode type plasma guns and pressure gradient type plasma guns have been provided, and the plasma flow generated by arc discharge is guided to the raw material to heat the raw material, or the high reactivity of the plasma flow is used. Therefore, a vapor deposition apparatus that performs ion plating at high speed has been developed.
In addition, such a vapor deposition apparatus has a substrate transport mechanism that feeds a long deposition target substrate from a delivery roll, winds it around a cylindrical deposition drum, and winds it up by a take-up roll. The mode which performs vapor deposition film formation on the surface of the board | substrate currently conveyed is taken.

しかしながら、基板がプラスチック等の可撓性の高いフィルムである場合、該フィルムが蒸着ドラム上を走行する際に、蒸着ドラムとの密着性が悪いと蒸着時の熱により変形しシワが発生し、成膜された蒸着膜の平面性が損なわれる問題があった。
この問題は、蒸着前にあらかじめ、基板フィルムを帯電させることにより、フィルムと蒸着ドラムとの密着性が向上し、解決することができる。
例えば、特許文献1には、基板フィルムに蒸着を行う前に、1kV以上の加速電圧で電子銃からの電子線によりフィルムを帯電させる技術が記載されている。
However, when the substrate is a highly flexible film such as plastic, when the film travels on the vapor deposition drum, if the adhesion with the vapor deposition drum is poor, the film is deformed by heat during vapor deposition and wrinkles occur. There was a problem that the flatness of the deposited vapor deposited film was impaired.
This problem can be solved by charging the substrate film in advance before vapor deposition to improve the adhesion between the film and the vapor deposition drum.
For example, Patent Document 1 describes a technique for charging a film with an electron beam from an electron gun at an acceleration voltage of 1 kV or higher before vapor deposition on a substrate film.

特開平3−237609号公報JP-A-3-237609

しかしながら、特許文献1に記載の技術のように、基板フィルムを帯電させるための電子銃を用いると、装置コストが高くなる。
本発明は、上記の従来の技術の問題点を克服し、低コストで、基板フィルムと蒸着ドラムの密着性を高め、蒸着熱による基板フィルムのダメージも防止できる蒸着方法及び蒸着装置を提供しようとするものである。
However, when an electron gun for charging the substrate film is used as in the technique described in Patent Document 1, the cost of the apparatus increases.
The present invention overcomes the above-mentioned problems of the prior art, and aims to provide a vapor deposition method and vapor deposition apparatus that can increase the adhesion between the substrate film and the vapor deposition drum at a low cost and prevent damage to the substrate film due to vapor deposition heat. To do.

本発明者らは、鋭意検討した結果、下記の構成を採ることにより、上記の従来の技術の問題点を克服できることを見出した。
即ち、本発明の構成は、以下の通りである。
As a result of intensive studies, the present inventors have found that the problems of the conventional techniques described above can be overcome by adopting the following configuration.
That is, the configuration of the present invention is as follows.

(1)ホローカソード型プラズマガンを使用して、蒸着ドラム上を搬送させているフィルム基板にプラズマアシスト蒸着を行う方法であって、フィルム基板に蒸着材料を蒸着させる前段に電子加速電極によりプラズマ中から電子を取出し、該電子でフィルム基板を帯電させることを特徴とする蒸着方法。
(2)電子加速電極に印加する加速電圧を制御してフィルム基板への帯電量を調整することを特徴とする前記(1)の蒸着方法。
(3)電子加速電極設置部分に、蒸着原料の蒸発粒子が飛翔しないように遮蔽することを特徴とする前記(1)の蒸着方法。
(1) A method of performing plasma-assisted vapor deposition on a film substrate transported on a vapor deposition drum using a hollow cathode type plasma gun, in which plasma is deposited by an electron acceleration electrode before vapor deposition material is vapor deposited on the film substrate. A vapor deposition method characterized in that electrons are taken out of the film and the film substrate is charged with the electrons.
(2) The vapor deposition method according to (1), wherein the amount of charge on the film substrate is adjusted by controlling the acceleration voltage applied to the electron acceleration electrode.
(3) The vapor deposition method according to (1), wherein the electron accelerating electrode installation portion is shielded so that the evaporated particles of the vapor deposition material do not fly.

(4)ホローカソード型プラズマガンを使用して、蒸着ドラム上を搬送させているフィルム基板にプラズマアシスト蒸着を行う装置であって、フィルム基板に蒸着材料を蒸着させる前段にプラズマ中から電子を取出し該電子でフィルム基板を帯電させるための電子加速電極を有することを特徴とする蒸着装置。
(5)プラズマアシスト蒸着を行うためのホローカソード型プラズマガンと、フィルム基板を搬送する蒸着ドラムと、フィルム基板に蒸着材料を蒸着させる前段にプラズマ中から電子を取出し該電子でフィルム基板を帯電させるための電子加速電極を有することを特徴とする蒸着装置。
(6)フィルム基板への帯電量を調整するために電子加速電極に加速電圧を印加する手段を有することを特徴とする前記(4)又は(5)の蒸着装置。
(7)電子加速電極設置部分に蒸着原料の蒸発粒子が飛翔しないようにするための遮蔽板を有することを特徴とする前記(4)〜(5)の蒸着装置。
(4) A device that performs plasma-assisted deposition on a film substrate transported on a deposition drum using a hollow cathode type plasma gun, and takes out electrons from the plasma before vapor deposition material is deposited on the film substrate. A vapor deposition apparatus comprising an electron acceleration electrode for charging the film substrate with the electrons.
(5) A hollow cathode type plasma gun for performing plasma-assisted deposition, a deposition drum for transporting the film substrate, and taking out electrons from the plasma before charging the deposition material on the film substrate, and charging the film substrate with the electrons. A vapor deposition apparatus comprising an electron accelerating electrode.
(6) The vapor deposition apparatus according to (4) or (5), further comprising means for applying an acceleration voltage to the electron acceleration electrode in order to adjust a charge amount to the film substrate.
(7) The vapor deposition apparatus according to any one of (4) to (5), further including a shielding plate for preventing the evaporation particles of the vapor deposition material from flying at a portion where the electron acceleration electrode is installed.

本発明は、フィルム基板に蒸着材料を蒸着させる前段で、電子加速電極によりプラズマ中から電子を取出し、該電子でフィルム基板を帯電させる構成を採ることにより、プラズマアシストに使うホローカソード型プラズマガンを蒸発粒子との反応性促進と共にフィルム基板の帯電用の電子源にも使用することができ、低コストで、基板フィルムと蒸着ドラムの密着性を高め、蒸着熱による基板フィルムのダメージも防止でき、その結果、高平滑の蒸着膜等を得ることができる。   The present invention provides a hollow cathode type plasma gun used for plasma assist by adopting a configuration in which electrons are taken out from plasma by an electron accelerating electrode and charged to the film substrate with the electrons before the deposition material is deposited on the film substrate. It can be used as an electron source for charging the film substrate as well as promoting reactivity with the evaporated particles, and at low cost, can improve the adhesion between the substrate film and the evaporation drum, and can prevent damage to the substrate film due to evaporation heat, As a result, a highly smooth deposited film or the like can be obtained.

本発明の蒸着装置の1例の概略を示す図である。It is a figure which shows the outline of one example of the vapor deposition apparatus of this invention.

本発明の実施の形態に沿って以下に詳細に説明する。
図1は本発明の蒸着装置の1例の概略説明図である。図1に示す蒸着装置1は、筐体内部に蒸着室101及び被蒸着基体収容室102を有し、筐体外部より蒸着室101に向けてプラズマを放出できるように設置したホローカソード型プラズマガン3を有し、蒸着室101内部に蒸着源4及びガス導入孔8を有し、被蒸着基体収容室102内部に蒸着ドラム5、基板送出ロール6及び基板巻取ロール7を有し、そして、蒸着ドラム5の近傍の、フィルム基板に蒸着材料を蒸着させる前段に、プラズマ中から電子を取出し該電子でフィルム基板を帯電させるための電子加速電極2を有する。
蒸着室101と被蒸着基体収容室102は、蒸着成分が、被蒸着基体収容室102内部に入り込まないように仕切11で仕切られている。
蒸着ドラム5は、その一部分上で基体9に蒸着膜を成膜できるように、当該一部分が蒸着室101の内部に位置するように配置されている。
This will be described in detail below along the embodiment of the present invention.
FIG. 1 is a schematic explanatory view of an example of the vapor deposition apparatus of the present invention. A vapor deposition apparatus 1 shown in FIG. 1 has a vapor deposition chamber 101 and a target substrate storage chamber 102 inside a casing, and is a hollow cathode type plasma gun installed so that plasma can be emitted from the outside of the casing toward the vapor deposition chamber 101. 3, a vapor deposition source 4 and a gas introduction hole 8 inside the vapor deposition chamber 101, a vapor deposition drum 5, a substrate feed roll 6, and a substrate take-up roll 7 inside the vapor deposition substrate storage chamber 102, and An electron accelerating electrode 2 for taking out electrons from the plasma and charging the film substrate with the electrons is provided in the vicinity of the vapor deposition drum 5 and before the vapor deposition material is vapor deposited on the film substrate.
The vapor deposition chamber 101 and the vapor deposition substrate storage chamber 102 are partitioned by a partition 11 so that vapor deposition components do not enter the vapor deposition substrate storage chamber 102.
The vapor deposition drum 5 is arranged so that a part of the vapor deposition drum 5 is located inside the vapor deposition chamber 101 so that a vapor deposition film can be formed on the substrate 9 on a part of the vapor deposition drum 5.

電子加速電極2として金属等の導電性物質からなるメッシュ状の材料を用いることができ、これにより、低コストで装置を構成することができる。そして、電圧供給部Xにより、該電子加速電極2に+電位を印加する。
プラズマガン3にAr等の不活性ガスを送気しながらプラズマガン3より不活性ガスのプラズマを放出させる。
プラズマガン3より放出されたプラズマは蒸着室101内でプラズマ領域104を形成する。
電子加速電極2は、プラズマに対して+電位を有することにより、プラズマガン3から放出されたプラズマから電子を誘引、分流加速し、フィルム基板に蒸着原材料を蒸着させる前段部分へ入射させ、フィルム基板を−電位に帯電させる。
また、電子加速電極2に印加する加速電圧を制御することで、フィルム基板の帯電量を制御することができる。
また、遮蔽板21を有することにより、電子加速電極設置部分に蒸着原料の蒸発粒子が飛翔しないようにすることができる。
A mesh-like material made of a conductive substance such as metal can be used as the electron accelerating electrode 2, whereby a device can be configured at low cost. Then, a positive potential is applied to the electron acceleration electrode 2 by the voltage supply unit X.
An inert gas plasma is emitted from the plasma gun 3 while supplying an inert gas such as Ar to the plasma gun 3.
The plasma emitted from the plasma gun 3 forms a plasma region 104 in the vapor deposition chamber 101.
The electron accelerating electrode 2 has a positive electric potential with respect to the plasma, thereby attracting electrons from the plasma emitted from the plasma gun 3 and accelerating the diversion, so that the electron accelerating electrode 2 is incident on the previous stage where the deposition raw material is deposited on the film substrate. Is negatively charged.
Further, by controlling the acceleration voltage applied to the electron acceleration electrode 2, the charge amount of the film substrate can be controlled.
Moreover, by having the shielding plate 21, it is possible to prevent the evaporation particles of the evaporation material from flying to the electron acceleration electrode installation portion.

蒸発源4から蒸発した蒸着原料粒子は、前記プラズマ領域104を通過する際に該プラズマにより活性化、反応性促進される。
また、ガス導入孔8からOやNなどの反応性ガスを導入することにより、酸化物膜や窒化物膜を形成することができる。
なお、蒸発源4から蒸着原料を蒸発させる際の加熱方式としては、特に限定されず、抵抗加熱方式、電子ビーム加熱方式、誘導加熱方式等の公知公用の方式を始めとし、様々な加熱方式を採ることができる。
The vapor deposition raw material particles evaporated from the evaporation source 4 are activated and promoted by the plasma when passing through the plasma region 104.
In addition, an oxide film or a nitride film can be formed by introducing a reactive gas such as O 2 or N 2 from the gas introduction hole 8.
The heating method for evaporating the deposition material from the evaporation source 4 is not particularly limited, and various heating methods such as a resistance heating method, an electron beam heating method, an induction heating method, and the like can be used. Can be taken.

以下に本発明を実施例によりさらに具体的に説明する。なお、ここに示す内容は本発明の精神から逸脱しない範囲で変更し得るものであり、下記の実施例に制限されるべきものではない。   Hereinafter, the present invention will be described more specifically with reference to examples. The contents shown here can be changed without departing from the spirit of the present invention, and should not be limited to the following examples.

〔実施例〕
図1に示す装置を用いた。詳細には、蒸着室101内部が幅1m、奥行1m、高さ0.9mで、ホローカソード型プラズマガン3のプラズマ出射孔径が40mm、蒸着源4と蒸着ドラム5との距離を0.5mとし、電子加速電極としてSUS316製の5メッシュの部材を用い、電子加速電極2に印加する加速電圧は蒸着室101に対して1kVとし、基体として厚さ5μmのポリエステルフィルムを100m/min.の速度で搬送し、蒸着源の蒸着原料はAlとし、蒸着原料を誘導加熱方式で1350℃に加熱して蒸発させた。
プラズマガンにArを200sccmで流し、ガス導入孔8からはO2ガスを7000sccmで流しながら、プラズマガンに200Aの電流を流してプラズマ照射して、蒸着膜が50nmの厚みとなるように蒸着した。蒸着ドラムは、+100Vの電位に保ち、帯電したフィルムをドラムに密着するようにした。
得られた酸化アルミニウム膜は透明で、SEM画像の肉眼観察において緻密であることが確認された。また、フィルムへの熱ダメージも見られなかった。
〔Example〕
The apparatus shown in FIG. 1 was used. Specifically, the inside of the vapor deposition chamber 101 is 1 m wide, 1 m deep, 0.9 m high, the plasma emission hole diameter of the hollow cathode plasma gun 3 is 40 mm, and the distance between the vapor deposition source 4 and the vapor deposition drum 5 is 0.5 m. A 5 mesh member made of SUS316 is used as the electron acceleration electrode, the acceleration voltage applied to the electron acceleration electrode 2 is 1 kV with respect to the vapor deposition chamber 101, and a polyester film having a thickness of 5 μm is used as the substrate at a speed of 100 m / min. The vapor deposition raw material of the vapor deposition source was Al, and the vapor deposition raw material was evaporated by heating to 1350 ° C. by induction heating.
Ar was passed through the plasma gun at 200 sccm, O 2 gas was passed through the gas introduction hole 8 at 7000 sccm, and a current of 200 A was passed through the plasma gun to irradiate the plasma so that the deposited film had a thickness of 50 nm. . The vapor deposition drum was kept at a potential of +100 V so that the charged film was in close contact with the drum.
The obtained aluminum oxide film was transparent, and it was confirmed that the SEM image was dense in the naked eye. In addition, no thermal damage to the film was observed.

〔比較例〕
電子加速電極2に電圧を印加しなかった以外は実施例と同様の処理を行ったところ、ポリエステルフィルムは熱変形してシワが発生した。そのため、蒸着膜は平面性が損なわれて製品として使うことができなかった。
[Comparative Example]
Except that no voltage was applied to the electron acceleration electrode 2, the same treatment as in the example was performed. As a result, the polyester film was thermally deformed and wrinkled. For this reason, the deposited film cannot be used as a product because the planarity is impaired.

1 蒸着装置
2 電子加速電極
3 ホローカソード型プラズマガン
4 蒸着源
5 蒸着ドラム
6 基板送出ロール
7 基板巻取ロール
8 ガス導入孔
9 基板
11 仕切
21 遮蔽板
101 蒸着室
102 被蒸着基体収容室
104 プラズマ領域
X 電圧供給部
DESCRIPTION OF SYMBOLS 1 Deposition apparatus 2 Electron acceleration electrode 3 Hollow cathode type plasma gun 4 Deposition source 5 Deposition drum 6 Substrate delivery roll 7 Substrate take-up roll 8 Gas introduction hole 9 Substrate 11 Partition 21 Shielding plate 101 Deposition chamber 102 Deposition substrate receiving chamber 104 Plasma Area X Voltage supply section

Claims (7)

ホローカソード型プラズマガンを使用して、蒸着ドラム上を搬送させているフィルム基板にプラズマアシスト蒸着を行う方法であって、フィルム基板に蒸着材料を蒸着させる前段に電子加速電極によりプラズマ中から電子を取出し、該電子でフィルム基板を帯電させることを特徴とする蒸着方法。   In this method, plasma assisted deposition is performed on a film substrate transported on a deposition drum using a hollow cathode type plasma gun, and electrons are accelerated from the plasma by an electron acceleration electrode before the deposition material is deposited on the film substrate. A vapor deposition method comprising: taking out and charging the film substrate with the electrons. 電子加速電極に印加する加速電圧を制御してフィルム基板への帯電量を調整することを特徴とする請求項1記載の蒸着方法。   The vapor deposition method according to claim 1, wherein the charge amount to the film substrate is adjusted by controlling an acceleration voltage applied to the electron acceleration electrode. 電子加速電極設置部分に、蒸着原料の蒸発粒子が飛翔しないように遮蔽することを特徴とする請求項1記載の蒸着方法。   The vapor deposition method according to claim 1, wherein the electron accelerating electrode installation portion is shielded so that the evaporated particles of the vapor deposition material do not fly. ホローカソード型プラズマガンを使用して、蒸着ドラム上を搬送させているフィルム基板にプラズマアシスト蒸着を行う装置であって、フィルム基板に蒸着材料を蒸着させる前段にプラズマ中から電子を取出し該電子でフィルム基板を帯電させるための電子加速電極を有することを特徴とする蒸着装置。   An apparatus for performing plasma-assisted deposition on a film substrate transported on a deposition drum using a hollow cathode type plasma gun, wherein electrons are extracted from the plasma before vapor deposition material is deposited on the film substrate. An evaporation apparatus comprising an electron acceleration electrode for charging a film substrate. プラズマアシスト蒸着を行うためのホローカソード型プラズマガンと、フィルム基板を搬送する蒸着ドラムと、フィルム基板に蒸着材料を蒸着させる前段にプラズマ中から電子を取出し該電子でフィルム基板を帯電させるための電子加速電極を有することを特徴とする蒸着装置。   A hollow cathode type plasma gun for performing plasma-assisted deposition, a deposition drum for transporting the film substrate, and an electron for taking out electrons from the plasma and charging the film substrate with the electrons before the deposition material is deposited on the film substrate. A vapor deposition apparatus comprising an acceleration electrode. フィルム基板への帯電量を調整するために電子加速電極に加速電圧を印加する手段を有することを特徴とする請求項4又は5記載の蒸着装置。   6. The vapor deposition apparatus according to claim 4, further comprising means for applying an acceleration voltage to the electron acceleration electrode in order to adjust a charge amount to the film substrate. 電子加速電極設置部分に蒸着原料の蒸発粒子が飛翔しないようにするための遮蔽板を有することを特徴とする請求項4〜5のいずれかに記載の蒸着装置。   The vapor deposition apparatus according to any one of claims 4 to 5, further comprising a shielding plate for preventing the evaporation particles of the vapor deposition material from flying on the electron acceleration electrode installation portion.
JP2009031666A 2009-02-13 2009-02-13 Vapor deposition method and vapor deposition apparatus Pending JP2010185124A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011021214A (en) * 2009-07-14 2011-02-03 Toppan Printing Co Ltd Film deposition system, gas barrier laminate and optical member
JP2017177343A (en) * 2016-03-28 2017-10-05 東レフィルム加工株式会社 Laminate film and method for manufacturing the same
JP2022546072A (en) * 2019-08-30 2022-11-02 ダイソン・テクノロジー・リミテッド deposition system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011021214A (en) * 2009-07-14 2011-02-03 Toppan Printing Co Ltd Film deposition system, gas barrier laminate and optical member
JP2017177343A (en) * 2016-03-28 2017-10-05 東レフィルム加工株式会社 Laminate film and method for manufacturing the same
JP2022546072A (en) * 2019-08-30 2022-11-02 ダイソン・テクノロジー・リミテッド deposition system

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