JP2004232050A - Holder for vapor deposition - Google Patents

Holder for vapor deposition Download PDF

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Publication number
JP2004232050A
JP2004232050A JP2003023485A JP2003023485A JP2004232050A JP 2004232050 A JP2004232050 A JP 2004232050A JP 2003023485 A JP2003023485 A JP 2003023485A JP 2003023485 A JP2003023485 A JP 2003023485A JP 2004232050 A JP2004232050 A JP 2004232050A
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JP
Japan
Prior art keywords
vapor deposition
mask
reinforcing member
holder
jig
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Abandoned
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JP2003023485A
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Japanese (ja)
Inventor
Tomohiro Ono
智宏 小野
Shunsuke Watanabe
俊介 渡辺
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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Publication date
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Priority to JP2003023485A priority Critical patent/JP2004232050A/en
Publication of JP2004232050A publication Critical patent/JP2004232050A/en
Abandoned legal-status Critical Current

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  • Physical Vapour Deposition (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a holder for vapor deposition, which enhances a precision of a position to be vapor-deposited on a member to be vapor-deposited. <P>SOLUTION: This holder for vapor deposition comprises a vapor deposition mask 12 having a plurality of openings 15 for forming a predetermined vapor-deposited pattern on a translucent substrate 10 with an evaporated vapor-depositing material 4, and a masking part 16 for preventing formation of the above vapor deposition pattern on the translucent substrate 10; a mask holder 13 for supporting the vapor deposition mask 12; and a reinforcing member 14 which is sandwiched and held between the vapor deposition mask 12 and the mask holder 13, and has a plurality of opening windows 24 corresponding to the openings 15, and a flexure-preventing part 23 for preventing deflection of the masking part 16. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、例えば蒸着材料の蒸発によって被蒸着部材に所定の蒸着パターンを形成するための蒸着装置内に配設される蒸着用治具に関する。
【0002】
【従来の技術】
従来、有機ELパネルはガラス材料からなる透光性基板上に、少なくとも発光層を有する有機層をITO(indium tin oxide)等からなる複数の平行な陽極ラインと、各陽極ラインと直交するアルミニウム(Al)等からなる複数の平行な陰極ラインとで狭持してなる有機EL素子によってドットマトリックス状に構成されるものが知られている。
【0003】
この場合、各陽極ライン、各陰極ライン及び有機層の各層は蒸着装置内に配設される蒸着用治具を用いて被蒸着部材となる透光性基板上に順次堆積されるようになっている。蒸着用治具としては蒸着マスクを有しており、この蒸着マスクはステンレス等の金属材料からなり、蒸着源から蒸発した蒸着材料が通過する貫通開口と蒸着材料の通過を阻止するマスク部とを有している。さらに、蒸着マスクの背後にはステンレス等の金属材料からなる基材部が配設されており、この基材部は蒸着マスクの貫通開口に対応する複数の開口窓部と、各開口窓部を取り囲むと共に蒸着マスクのマスク部を支持する支持部とを備えている。そして、基材部の支持部に単一の蒸着マスクをそれぞれテープ等により固着することで、各開口窓部が貫通開口に対応するように基材部と蒸着マスクとが貼り合わされ、これにより蒸発した蒸着材料が各開口窓部及び貫通開口を通過して透光性基板上に堆積されるようになっている(特許文献1参照)。
【0004】
【特許文献1】
特開2001−237073号公報
【0005】
【発明が解決しようとする課題】
特許文献1に記載の蒸着用治具の場合、蒸着マスクは蒸発した蒸着材料が通過する貫通開口と蒸着材料の通過を阻止するマスク部とを有すると共に、蒸着マスクを支持する基材部には蒸着マスクの貫通開口に対応する複数の開口窓部及び各開口窓部を取り囲むように形成される支持部が形成され、この支持部に各蒸着マスクのマスク部周縁がそれぞれ固着されている構成である。
【0006】
このように蒸着マスクのマスク部周縁は支持部によって支持されているが、蒸着マスクの貫通開口は基材部によって支持されていないため、例えば透光性基板の形状が大型化されると、この透光性基板の形状の大型化に応じて蒸着マスクの形状も大型化せざるを得ない。ところが、蒸着マスクの形状を大型化してしまうと、この蒸着マスク全体の形状大型化に応じて貫通開口の開口幅が大きく設定されてしまい、蒸着マスクの中央部領域が蒸着マスクの自重によって基材部側に撓み、これにより蒸着マスクにおける貫通開口の位置精度の低下に伴って、被蒸着部材への蒸着位置精度が低下てしまうという問題を有していた。
【0007】
本発明はこの点に鑑みてなされたもので、その主な目的は、被蒸着部材への蒸着位置精度を高めることが可能な蒸着用治具を提供せんとするものである。
【0008】
【課題を解決するための手段】
本発明は前記目的を達成するため、蒸着材料の蒸発によって被蒸着部材に所定の蒸着パターンを形成してなる複数の開口部と前記被蒸着部材への前記蒸着パターンの形成を阻止するマスク部とを有する蒸着マスクと、この蒸着マスクを支持するマスクホルダと、前記蒸着マスクと前記マスクホルダとの間に狭持され前記開口部に対応する複数の開口窓部と前記マスク部の撓みを防止する撓み防止部とを有する補強部材と、を備えたことを特徴とする。
【0009】
また本発明は、前記補強部材には各開口窓部を取り囲む枠部が形成されると共に、前記枠部に切り欠き部を設けたことを特徴とする。
【0010】
また本発明は、前記マスクホルダに前記補強部材を収納する収納壁を設けたことを特徴とする。
【0011】
また本発明は、前記蒸着マスクは前記マスクホルダと所定の固定手段よって固定されていることを特徴とする。
【0012】
【発明の実施の形態】
図1から図4は本発明の実施形態を示すもので、以下、これらに基づいて本発明の実施形態を例えば有機ELパネルの発光層を形成するための蒸着用治具に適用した場合について説明する。なお、図1は本発明の実施形態による蒸着装置を示す図、図2は同実施形態における蒸着源を示す図、図3は同実施形態における蒸着用治具を示す斜視図、図4は同実施形態における蒸着用治具の断面図である。
【0013】
図1において、蒸着装置Aは排気ポート1を介して図示しない真空ポンプで高真空に排気された真空室2を有している。この真空室2の下側にはルツボ等を有する蒸着源3が配設されている。
【0014】
蒸着源3は図2に示すように、蒸着材料4を収納するルツボ5と、このルツボ5を取り巻くように巻回されるコイル状からなる加熱部材6と、ルツボ5及び加熱部材6を包囲するように配設される熱遮蔽部材7とを有している。ルツボ5は円筒カップ型に形成され、後で詳述する被蒸着部材である透光性基板側が開口する孔部5aを備えると共に、熱遮蔽部材7はルツボ5と同じく略円筒カップ型に形成されルツボ5の孔部5aに対応する貫通孔7aを備えている。
【0015】
また、ルツボ5には加熱調整を行うための制御手段8を備えている。この制御手段8は、後で詳述する検出手段9からの検出データを所定周期で入力すると共に、入力された検出データに基づき蒸着材料4の蒸発した粒子の浮遊量(蒸着状態)を所定の演算処理によって求め、この演算結果と予め設定される基準値とを比較し、この比較結果に基づいて加熱部材6に対して電流量調整等のフィードバック制御を行うものである。
【0016】
検出手段9は、ルツボ5に収納される蒸着材料4の浮遊量を検出するための膜厚センサや濃度センサ等から構成されるものである。
【0017】
検出手段9は、蒸着源3と前記透光性基板との間の蒸着材料4の蒸着経路J1中に配設されるもので、蒸着経路J1中の蒸着材料4の蒸発した粒子の浮遊量に応じた検出データを制御手段8に出力するものである。
【0018】
なお、前述の蒸着経路J1は、ルツボ5の形状によって大きく左右されるため、図示した蒸着経路J1は、この限りではない。
【0019】
一方、真空室2の上側には、透明ガラス材からなる透光性基板10(有機ELパネルの場合、発光層が形成される前段階において、透明電極,絶縁層,正孔注入層及び正孔輸送層等が既に形成されている)と、この透光性基板10の背後に配設され蒸着マスク等を有する蒸着用治具11とが配設されている。
【0020】
蒸着用治具11は、透光性基板10に所定の蒸着パターンを形成(堆積)するための蒸着マスク12と、この蒸着マスク12の背後に配設されるマスクホルダ13と、蒸着マスク12とマスクホルダ13との間に介在し蒸着マスク12の撓みを防止する補強部材14とを備えている。
【0021】
蒸着マスク12は、金属材料からなり、図3に示すようにその外形形状が透光性基板10の外形形状よりも大きい略矩形状に形成され、蒸着材料4の蒸発した粒子が通過する角孔からなる複数の開口部15と、蒸着パターンの非形成領域であって前記粒子の通過を阻止するマスク部16とを有し、マスク部16の角部近傍には4つのネジ孔17が形成されている。
【0022】
マスクホルダ13は、金属材料からなり、略枠型形状に形成され、補強部材14を収納するための収納壁18と、この収納壁18を取り囲むように形成され蒸着マスク12の周縁を支持する枠状からなる支持部19と、収納壁18の開口幅よりも幅狭な開口幅を有する窓部20とを有している。この場合、窓部20の開口幅は蒸着マスク12の各開口部15の形成領域よりも大きく設定されているため、窓部20を通過する蒸発した蒸着材料4の前記粒子は各開口部15を通過することができる。なお、21は支持部19の角部近傍に形成され後で後述するネジが螺合する4つの固定部であり、これら各固定部21は蒸着マスク12の各ネジ孔17に対応した位置に形成されている。
【0023】
補強部材14は、ステンレス等の金属材料からなり、蒸着マスク12の各開口部15に対応する複数の開口窓部22と、各開口窓部22を取り囲む枠部23とを有している。そして、隣り合う開口窓部22の間には蒸着マスク12のマスク部16のマスクホルダ13側への撓みを防止するための仕切壁からなる撓み防止部24が形成されると共に、枠部23の角部25には各開口窓部22のうち角部25に位置する開口窓部22箇所と同時に切削される4つの切り欠き部26が設けられている。
【0024】
なお、本実施形態では各開口窓部22及び各切り欠き部26が例えば水に研磨剤を混在させたウォータージェットを各開口窓部22及び各切り欠き部26に噴射させるウォータージェット法により切削されている。従って、各開口窓部22及び各切り欠き部26の切削加工時において、この切削加工により生じる加工熱が枠部23の角部25に最も作用しやすくなるが、角部25には切り欠き部26が形成され角部25が存在しない構成となっているため、枠部23の補強部材14板厚方向における変形が抑制され、これにより補強部材14の表面の平坦度を良好に保つことが可能となる。
【0025】
続いて本実施形態における蒸着用治具11の組み付け例を図4を用いて説明する。まず、マスクホルダ13の収納壁18内に補強部材14を嵌め込むように埋設する。この際、補強部材14の枠部23が収納壁18によって支持され、しかも補強部材14の枠部23、撓み防止部24はその板厚方向における変形が防止されている。従って、補強部材14のマスクホルダ13への収納時に補強部材14の変形によって補強部材14の表面はマスクホルダ13の支持部19の表面から突出することが抑制され、これにより補強部材14の表面は支持部19の表面と略同一面となるように設定される。
【0026】
次に、補強部材14の収納されたマスクホルダ13上に蒸着マスク12を配設する。この際、補強部材14の枠部23、撓み防止部24の表面及びマスクホルダ13の支持部19の表面は略同一面となっているため、蒸着マスク12は支持部19及び枠部23、撓み防止部24上に密着するように配設される。また、この場合、蒸着マスク12の各ネジ孔17をマスクホルダ13の各固定部21に対応するように蒸着マスク12をマスクホルダ13上に位置合わせすることで、蒸着マスク12の各開口部15が補強部材14の各開口窓部22に対応するするように蒸着マスク12がマスクホルダ13上に配設される。
【0027】
そして、蒸着マスク12とマスクホルダ13とを固定する固定手段であるネジBを蒸着マスク12の各ネジ孔17を介してマスクホルダ13の固定部21に螺合することにより蒸着マスク12が補強部材14を収納するマスクホルダ13の表面に沿って密着固定される。従って、補強部材14は蒸着マスク12とマスクホルダ13との間に狭持され、しかも補強部材14の撓み防止部24が蒸着マスク12のマスク部16を支持していることから蒸着マスク12のマスクホルダ13側への撓みが防止される。加えて、マスクホルダ13及び補強部材14はその表面が略平坦面となっていることから、マスクホルダ13及び補強部材14上に支持される蒸着マスク12もその表面は略平坦面を有することになる。
【0028】
また、かかる蒸着マスク12、マスクホルダ13及び補強部材14が固定された蒸着用治具11は、蒸着装置A内においてマスクホルダ13の背後に配設される受け台27によって支持されていると共に、治具保持機構28によって蒸着源3に対する蒸着用治具11(マスクホルダ13)の板面方向における位置決めがなされている(図1参照)。
【0029】
すなわち、治具保持機構28としては例えばマスクホルダ13の側面のうち第1の側面29、第2の側面30(図3参照)を受け台27に一体に設けられた図示しない位置決めピンに押しつけると共に、各側面29,30と向かい合う各側面31,32側を受け台27に固定された図示しないコイルバネ等からなる弾性部材で固定することで、マスクホルダ13の板面方向における位置決めが行われ、これにより蒸着用治具11が治具保持機構28によって蒸着源3の蒸着経路J1に対応するように受け台27上に位置決め配置される。
【0030】
なお、透光性基板10の板面方向に対する位置決めは、蒸着用治具11と同様に前記位置決めピン及び前記弾性部材からなる基板保持機構(図示せず)によって行われ、さらに透光性基板10の板厚方向に対する位置決めは、透光性基板10の上方に配設される一対の抑えピン33(図4参照)が図示しないシリンダの駆動によって蒸着マスク12側に下降することで行われ、これにより透光性基板10は各抑えピン33と蒸着用治具11との間に狭持され、且つ前記基板保持機構によって蒸着源3の蒸着経路J1に対応するように位置決め配置される。
【0031】
34は蒸着経路J1において蒸着材料4を透光性基板10に良好に蒸着するための回転機構(図1参照)であり、この回転機構34は、ステッピングモータやサーボモータ等の駆動手段から構成され、回転機構34における出力軸に前記基板保持機構の所定箇所が連結され、透光性基板10の板面方向における中心位置を基準として、所定速度で回転するように構成されている。
【0032】
なお、前記基板保持機構における回転機構34の回転パターンは、図示しないコントロール装置によって設定されている。
【0033】
また、真空室2内の蒸着源3と治具保持機構28との間には、蒸着経路J1を遮断する開閉機構35が備えれられている。この開閉機構35は前記コントロール装置からの指令信号に基づいてシャッター35aの開閉を行うもので、蒸着装置Aはシャッター35aのオープン時に蒸着可能となる。
【0034】
以上の各部によって蒸着装置Aが構成されている。
【0035】
かかる実施形態においては、蒸着材料4の蒸発によって被蒸着部材である透光性基板10に前記蒸着パターンを形成してなる複数の開口部15と透光性基板10への前記蒸着パターンの形成を阻止するマスク部16とを有する蒸着マスク12と、この蒸着マスク12を支持するマスクホルダ13と、蒸着マスク12とマスクホルダ13との間に狭持され開口部15に対応する複数の開口窓部22とマスク部16の撓みを防止する撓み防止部24とを有する補強部材14と、を備えたものである。
【0036】
従って、マスクホルダ13の収納壁18内に補強部材14を収納したときに補強部材14の枠部23表面は収納壁18を取り囲む支持部19表面と略同一面になっており、これら枠部23表面、支持部19表面に沿うように蒸着マスク12が密着固定されている。そして、蒸着マスク12の中央部領域においては補強部材14に設けられた撓み防止部24が蒸着マスク12のマスク部16を支持していることから、蒸着マスク12はマスクホルダ13及び補強部材14によって全体が撓むことなくマスクホルダ13上に配設される。よって、従来のように蒸着マスクの中央部領域が蒸着マスクの自重によってマスクホルダ側に撓むことがなくなり、これにより蒸着マスク12の開口部15における位置精度を高めることができるため、蒸着材料4の蒸発によってシャッター35aのオープン時に通過した蒸着材料4がマスクホルダ13の窓部20、補強部材14の開口窓部22並びに蒸着マスク12の開口部15を通過することで、透光性基板10に精度よく前記蒸着パターンを形成(堆積)することが可能となる。
【0037】
また、補強部材14には各開口窓部22を取り囲む枠部23が形成されると共に、枠部23に開口窓部22の加工時に生じる枠部23の変形を抑制するための切り欠き部26を設けたことにより、枠部23の補強部材14板厚方向における変形が抑制され、これにより補強部材14の表面の平坦度を良好に保つことが可能となる。
【0038】
また、マスクホルダ13に補強部材14を収納する収納壁18を設けたことにより、前記発光層とは異なる蒸着パターンを形成する際にマスクホルダ13及び補強部材14を同時に交換することが不要となり、前記異なる蒸着パターンに対応した補強部材14を前記発光層の形成に用いたマスクホルダ13の収納壁18内に収納することができる。よって、透光性基板10に各層を形成する際に各補強部材14に対して単一のマスクホルダ13で対応することか可能となり、これによりマスクホルダ13の共用化を図ることができ、有機ELパネルの蒸着工程における作業効率を向上させることができる。
【0039】
また、蒸着マスク12はマスクホルダ13とネジBからなる固定手段によって固定されていることにより、前記発光層を形成するための補強部材と前記発光層とは異なる蒸着パターンを形成するための補強部材とをネジBの螺合を解除することで容易に交換することが可能となり、これにより有機ELパネルの蒸着工程における補強部材14の交換作業性を良好にすることができる。
【0040】
また本実施形態では、蒸着マスク12に8個の開口部15を設け、各開口部15に対応する補強部材14箇所に開口部15と同数の各開口窓部22を形成した場合について説明したが、開口部15,開口窓部22の形成個数は任意に設定することができる。
【0041】
また本実施形態では、枠部23に切り欠き部26を設けて開口窓部22の切削加工時に補強部材14の板厚方向における変形を防止する例について説明したが、本発明はこれに限定されることはなく、切り欠き部26は開口窓部24の切削加工時に補強部材14の板厚方向における変形を防止することが可能であれば補強部材14の任意の箇所に設けてもよい。
【0042】
また本実施形態では、蒸着マスク12とマスクホルダ13とがネジBからなる固定手段によって固定される例について説明したが、蒸着マスク12とマスクホルダ13とを固定する固定手段は任意である。
【0043】
なお本実施形態では、補強部材14がマスクホルダ13の収納壁18に収納される場合について説明したが、例えば補強部材14を収納壁18に収納した後に補強部材14とマスクホルダ13とをネジにより固定してもよい。なお、この場合、補強部材14とマスクホルダ13とのネジ固定時にネジの上部が補強部材14の枠部23の表面またはマスクホルダ13の支持部19の表面から突出すると蒸着マスク12が変形してしまうため、ネジ固定時にネジの上部をを補強部材14の枠部23内に埋没させる必要がある。
【0044】
【発明の効果】
以上、本発明によれば、初期の目的を達成することができ、被蒸着部材への蒸着位置精度を高めることが可能な蒸着用治具を提供することができる。
【図面の簡単な説明】
【図1】本発明の実施形態による蒸着装置を示す図。
【図2】同実施形態による蒸着源を示す図。
【図3】同実施形態による蒸着用治具を示す斜視図。
【図4】同実施形態による蒸着用治具の断面図。
【符号の説明】
A 蒸着装置
2 真空室
3 蒸着源
4 蒸着材料
10 透光性基板(被蒸着部材)
11 蒸着用治具
12 蒸着マスク
13 マスクホルダ
14 補強部材
15 開口部
16 マスク部
18 収納壁
19 支持部
20 窓部
22 開口窓部
23 枠部
24 撓み防止部
26 切り欠き部
J1 蒸着経路
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a jig for vapor deposition provided in a vapor deposition apparatus for forming a predetermined vapor deposition pattern on a deposition target member by evaporating a vapor deposition material, for example.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an organic EL panel has a structure in which at least an organic layer having a light emitting layer is formed on a translucent substrate made of a glass material by a plurality of parallel anode lines made of ITO (indium tin oxide) or the like, and aluminum ( An organic EL device sandwiched between a plurality of parallel cathode lines made of Al) or the like is formed in a dot matrix.
[0003]
In this case, each anode line, each cathode line, and each layer of the organic layer are sequentially deposited on a light-transmitting substrate serving as a deposition target member using a deposition jig provided in a deposition apparatus. I have. The deposition jig has a deposition mask, which is made of a metal material such as stainless steel, and has a through-opening through which the deposition material evaporated from the deposition source passes and a mask portion for blocking the passage of the deposition material. Have. Further, a base portion made of a metal material such as stainless steel is provided behind the evaporation mask, and the base portion has a plurality of opening windows corresponding to the through openings of the evaporation mask, and each opening window. And a support portion for surrounding and supporting a mask portion of the evaporation mask. Then, a single vapor deposition mask is fixed to the support portion of the substrate portion with a tape or the like, so that the substrate portion and the vapor deposition mask are bonded so that each opening window corresponds to the through-opening. The deposited material passes through each opening window and the through-opening and is deposited on the light-transmitting substrate (see Patent Document 1).
[0004]
[Patent Document 1]
JP 2001-237073 A
[Problems to be solved by the invention]
In the case of the vapor deposition jig described in Patent Document 1, the vapor deposition mask has a through opening through which the vaporized vapor deposition material passes and a mask portion that prevents the vapor deposition material from passing, and a base portion that supports the vapor deposition mask has A plurality of opening windows corresponding to the through openings of the evaporation mask and a support portion formed so as to surround each of the opening windows are formed, and the periphery of the mask portion of each evaporation mask is fixed to this support portion. is there.
[0006]
As described above, the periphery of the mask portion of the evaporation mask is supported by the support portion, but the through-opening of the evaporation mask is not supported by the base member portion. As the size of the light-transmitting substrate increases, the shape of the vapor deposition mask must also increase. However, if the shape of the evaporation mask is enlarged, the opening width of the through-opening is set to be large in accordance with the increase in the shape of the entire evaporation mask, and the central region of the evaporation mask has a substrate weight due to its own weight. Therefore, there is a problem that the positional accuracy of the through-opening in the vapor deposition mask is reduced and the positional accuracy of vapor deposition on the member to be vapor-deposited is reduced.
[0007]
The present invention has been made in view of this point, and a main object of the present invention is to provide a vapor deposition jig capable of improving the precision of a vapor deposition position on a deposition target member.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention includes a plurality of openings formed by forming a predetermined vapor deposition pattern on a member to be vapor-deposited by evaporating a vapor-deposition material and a mask portion for preventing formation of the vapor-deposition pattern on the member to be vapor-deposited. A mask holder supporting the vapor deposition mask, a plurality of opening windows corresponding to the openings, sandwiched between the vapor deposition mask and the mask holder, and preventing the mask portion from bending. And a reinforcing member having a deflection preventing portion.
[0009]
Further, the present invention is characterized in that a frame portion surrounding each opening window is formed in the reinforcing member, and a cutout portion is provided in the frame portion.
[0010]
Further, the present invention is characterized in that the mask holder is provided with a storage wall for storing the reinforcing member.
[0011]
Further, the invention is characterized in that the vapor deposition mask is fixed to the mask holder by a predetermined fixing means.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
FIGS. 1 to 4 show an embodiment of the present invention. Hereinafter, a case where the embodiment of the present invention is applied to a vapor deposition jig for forming a light emitting layer of an organic EL panel will be described based on the embodiments. I do. FIG. 1 is a diagram illustrating a vapor deposition apparatus according to an embodiment of the present invention, FIG. 2 is a diagram illustrating a vapor deposition source according to the embodiment, FIG. 3 is a perspective view illustrating a vapor deposition jig according to the embodiment, and FIG. It is sectional drawing of the jig | tool for vapor deposition in embodiment.
[0013]
In FIG. 1, a vapor deposition apparatus A has a vacuum chamber 2 evacuated to high vacuum by a vacuum pump (not shown) via an exhaust port 1. An evaporation source 3 having a crucible or the like is provided below the vacuum chamber 2.
[0014]
As shown in FIG. 2, the vapor deposition source 3 surrounds a crucible 5 for accommodating the vapor deposition material 4, a coil-shaped heating member 6 wound around the crucible 5, and the crucible 5 and the heating member 6. And a heat shielding member 7 arranged as described above. The crucible 5 is formed in a cylindrical cup shape. The crucible 5 includes a hole 5a that opens on the side of a light-transmitting substrate, which is a member to be deposited, which will be described in detail later. A through hole 7a corresponding to the hole 5a of the crucible 5 is provided.
[0015]
Further, the crucible 5 is provided with control means 8 for performing heating adjustment. The control means 8 inputs detection data from the detection means 9 described later in detail at a predetermined period, and determines a floating amount (vapor deposition state) of the evaporated particles of the vapor deposition material 4 based on the input detection data. It is obtained by arithmetic processing, compares this arithmetic result with a preset reference value, and performs feedback control such as current amount adjustment on the heating member 6 based on the comparison result.
[0016]
The detecting means 9 includes a film thickness sensor, a concentration sensor, and the like for detecting a floating amount of the vapor deposition material 4 stored in the crucible 5.
[0017]
The detecting means 9 is provided in the vapor deposition path J1 of the vapor deposition material 4 between the vapor deposition source 3 and the translucent substrate, and detects the floating amount of the vaporized particles of the vapor deposition material 4 in the vapor deposition path J1. The corresponding detection data is output to the control means 8.
[0018]
Note that the above-described deposition path J1 is not limited to the illustrated deposition path J1 because the above-described deposition path J1 is greatly affected by the shape of the crucible 5.
[0019]
On the other hand, a transparent substrate 10 made of a transparent glass material (in the case of an organic EL panel, a transparent electrode, an insulating layer, a hole injection layer, A transport layer and the like have already been formed), and a vapor deposition jig 11 provided behind the translucent substrate 10 and having a vapor deposition mask and the like.
[0020]
The vapor deposition jig 11 includes a vapor deposition mask 12 for forming (depositing) a predetermined vapor deposition pattern on the translucent substrate 10, a mask holder 13 disposed behind the vapor deposition mask 12, and a vapor deposition mask 12. A reinforcing member 14 interposed between the mask holder 13 and the bending member 12 for preventing the deposition mask 12 from bending.
[0021]
The vapor deposition mask 12 is made of a metal material, and as shown in FIG. 3, is formed in a substantially rectangular shape whose outer shape is larger than the outer shape of the light-transmitting substrate 10, and is a rectangular hole through which evaporated particles of the vapor deposition material 4 pass. And a mask portion 16 which is a non-deposition region of the vapor deposition pattern and blocks the passage of the particles. Four screw holes 17 are formed near the corner of the mask portion 16. ing.
[0022]
The mask holder 13 is made of a metal material, is formed in a substantially frame shape, and has a storage wall 18 for storing the reinforcing member 14 and a frame that surrounds the storage wall 18 and supports the peripheral edge of the vapor deposition mask 12. And a window portion 20 having an opening width narrower than the opening width of the storage wall 18. In this case, since the opening width of the window 20 is set to be larger than the formation area of each opening 15 of the evaporation mask 12, the particles of the evaporated evaporation material 4 passing through the window 20 pass through each opening 15. Can pass through. Reference numeral 21 denotes four fixing portions which are formed near the corners of the support portion 19 and screwed to screws which will be described later. These fixing portions 21 are formed at positions corresponding to the screw holes 17 of the vapor deposition mask 12. Have been.
[0023]
The reinforcing member 14 is made of a metal material such as stainless steel and has a plurality of opening windows 22 corresponding to the respective openings 15 of the evaporation mask 12 and a frame 23 surrounding each of the opening windows 22. Between the adjacent opening windows 22, there is formed a bending prevention portion 24 formed of a partition wall for preventing the mask portion 16 of the vapor deposition mask 12 from bending toward the mask holder 13, and the frame portion 23 has The corner portion 25 is provided with four notches 26 that are cut simultaneously with 22 of the opening windows 22 located at the corner 25 among the opening windows 22.
[0024]
In the present embodiment, each of the opening windows 22 and each of the notches 26 are cut by, for example, a water jet method in which a water jet in which an abrasive is mixed with water is jetted to each of the opening windows 22 and each of the notches 26. ing. Therefore, at the time of cutting each of the opening windows 22 and each of the notches 26, the processing heat generated by this cutting works most easily on the corners 25 of the frame portion 23. Since there is a configuration in which the corners 25 are not formed and the corners 26 are not formed, the deformation of the frame portion 23 in the thickness direction of the reinforcing member 14 is suppressed, so that the flatness of the surface of the reinforcing member 14 can be kept good. It becomes.
[0025]
Next, an example of assembling the deposition jig 11 in the present embodiment will be described with reference to FIG. First, the reinforcing member 14 is embedded so as to be fitted into the storage wall 18 of the mask holder 13. At this time, the frame portion 23 of the reinforcing member 14 is supported by the storage wall 18, and the frame portion 23 and the bending prevention portion 24 of the reinforcing member 14 are prevented from being deformed in the thickness direction. Therefore, when the reinforcing member 14 is stored in the mask holder 13, the surface of the reinforcing member 14 is prevented from protruding from the surface of the support portion 19 of the mask holder 13 due to the deformation of the reinforcing member 14. It is set so as to be substantially flush with the surface of the support portion 19.
[0026]
Next, the deposition mask 12 is disposed on the mask holder 13 in which the reinforcing member 14 is stored. At this time, the surface of the frame portion 23 of the reinforcing member 14, the surface of the deflection preventing portion 24, and the surface of the support portion 19 of the mask holder 13 are substantially flush with each other. It is arranged so as to be in close contact with the prevention part 24. In this case, by positioning the evaporation mask 12 on the mask holder 13 so that the screw holes 17 of the evaporation mask 12 correspond to the fixing portions 21 of the mask holder 13, each opening 15 of the evaporation mask 12 is formed. The vapor deposition mask 12 is disposed on the mask holder 13 so that corresponds to each opening window 22 of the reinforcing member 14.
[0027]
Then, the screws B, which are fixing means for fixing the vapor deposition mask 12 and the mask holder 13, are screwed into the fixing portions 21 of the mask holder 13 through the screw holes 17 of the vapor deposition mask 12, so that the vapor deposition mask 12 becomes a reinforcing member. 14 is tightly fixed along the surface of the mask holder 13 that houses the mask holder 14. Therefore, the reinforcing member 14 is sandwiched between the vapor deposition mask 12 and the mask holder 13, and since the bending prevention portion 24 of the reinforcing member 14 supports the mask portion 16 of the vapor deposition mask 12, the mask of the vapor deposition mask 12 Deflection to the holder 13 side is prevented. In addition, since the mask holder 13 and the reinforcing member 14 have substantially flat surfaces, the vapor deposition mask 12 supported on the mask holder 13 and the reinforcing member 14 also has a substantially flat surface. Become.
[0028]
Further, the vapor deposition jig 11 to which the vapor deposition mask 12, the mask holder 13, and the reinforcing member 14 are fixed is supported by a receiving stand 27 disposed behind the mask holder 13 in the vapor deposition apparatus A, and The jig holding mechanism 28 positions the evaporation jig 11 (mask holder 13) with respect to the evaporation source 3 in the plate surface direction (see FIG. 1).
[0029]
That is, as the jig holding mechanism 28, for example, among the side surfaces of the mask holder 13, the first side surface 29 and the second side surface 30 (see FIG. 3) are pressed against a positioning pin (not shown) provided integrally with the receiving stand 27. By fixing the mask holder 13 in the direction of the plate surface by fixing the mask holder 13 with an elastic member such as a coil spring (not shown) fixed to the receiving stand 27, the side surfaces 31 and 32 facing the respective side surfaces 29 and 30 are fixed. Accordingly, the jig for vapor deposition 11 is positioned and arranged on the receiving table 27 by the jig holding mechanism 28 so as to correspond to the vapor deposition path J1 of the vapor deposition source 3.
[0030]
The positioning of the translucent substrate 10 with respect to the plate surface direction is performed by a substrate holding mechanism (not shown) including the positioning pins and the elastic member, similarly to the deposition jig 11. The positioning in the thickness direction is performed by lowering the pair of holding pins 33 (see FIG. 4) disposed above the light-transmitting substrate 10 toward the vapor deposition mask 12 by driving a cylinder (not shown). As a result, the translucent substrate 10 is held between each holding pin 33 and the deposition jig 11, and is positioned and arranged so as to correspond to the deposition path J1 of the deposition source 3 by the substrate holding mechanism.
[0031]
Reference numeral 34 denotes a rotating mechanism (see FIG. 1) for satisfactorily depositing the deposition material 4 on the translucent substrate 10 in the deposition path J1, and the rotating mechanism 34 is constituted by driving means such as a stepping motor and a servomotor. A predetermined portion of the substrate holding mechanism is connected to an output shaft of the rotation mechanism 34, and is configured to rotate at a predetermined speed with reference to a center position of the translucent substrate 10 in a plate surface direction.
[0032]
The rotation pattern of the rotation mechanism 34 in the substrate holding mechanism is set by a control device (not shown).
[0033]
Further, an opening / closing mechanism 35 for blocking the evaporation path J1 is provided between the evaporation source 3 and the jig holding mechanism 28 in the vacuum chamber 2. The opening / closing mechanism 35 opens and closes the shutter 35a based on a command signal from the control device, and the vapor deposition device A can perform vapor deposition when the shutter 35a is opened.
[0034]
The above components constitute the vapor deposition apparatus A.
[0035]
In such an embodiment, the plurality of openings 15 formed by forming the vapor deposition pattern on the translucent substrate 10 which is the member to be vapor-deposited by evaporation of the vapor deposition material 4 and the formation of the vapor deposition pattern on the translucent substrate 10 are performed. A vapor deposition mask 12 having a mask portion 16 for blocking, a mask holder 13 supporting the vapor deposition mask 12, and a plurality of opening windows corresponding to the openings 15 held between the vapor deposition mask 12 and the mask holder 13; The reinforcing member 14 includes a reinforcement member 22 and a deflection preventing portion 24 for preventing the mask portion 16 from bending.
[0036]
Therefore, when the reinforcing member 14 is stored in the storage wall 18 of the mask holder 13, the surface of the frame 23 of the reinforcing member 14 is substantially flush with the surface of the support 19 surrounding the storage wall 18. The vapor deposition mask 12 is tightly fixed along the surface and the surface of the support portion 19. In the central region of the evaporation mask 12, since the deflection preventing portion 24 provided on the reinforcing member 14 supports the mask portion 16 of the evaporation mask 12, the evaporation mask 12 is moved by the mask holder 13 and the reinforcing member 14. The whole is arranged on the mask holder 13 without bending. Therefore, unlike the conventional case, the central region of the vapor deposition mask does not bend toward the mask holder due to the weight of the vapor deposition mask, and the positional accuracy in the opening 15 of the vapor deposition mask 12 can be increased. The evaporation material 4 that has passed when the shutter 35a is opened due to evaporation of the light passes through the window portion 20 of the mask holder 13, the opening window portion 22 of the reinforcing member 14, and the opening portion 15 of the evaporation mask 12, so that the light-transmitting substrate 10 The deposition pattern can be formed (deposited) with high accuracy.
[0037]
In addition, a frame 23 surrounding each opening window 22 is formed in the reinforcing member 14, and a notch 26 for suppressing deformation of the frame 23 generated at the time of processing the opening window 22 is formed in the frame 23. With the provision, the deformation of the frame portion 23 in the thickness direction of the reinforcing member 14 is suppressed, so that the flatness of the surface of the reinforcing member 14 can be kept good.
[0038]
Further, by providing the storage wall 18 for storing the reinforcing member 14 in the mask holder 13, it is not necessary to simultaneously replace the mask holder 13 and the reinforcing member 14 when forming a vapor deposition pattern different from the light emitting layer. The reinforcing members 14 corresponding to the different vapor deposition patterns can be stored in the storage wall 18 of the mask holder 13 used for forming the light emitting layer. Therefore, when forming each layer on the translucent substrate 10, it is possible to use a single mask holder 13 for each reinforcing member 14, whereby the mask holder 13 can be shared and organic layers can be used. The working efficiency in the deposition process of the EL panel can be improved.
[0039]
Further, since the vapor deposition mask 12 is fixed by the fixing means including the mask holder 13 and the screw B, a reinforcing member for forming the light emitting layer and a reinforcing member for forming a vapor deposition pattern different from the light emitting layer are provided. By easily unscrewing the screw B, it is possible to easily exchange the reinforcing member 14 in the vapor deposition step of the organic EL panel.
[0040]
Further, in the present embodiment, a case has been described in which eight openings 15 are provided in the vapor deposition mask 12 and the same number of the opening windows 22 as the openings 15 are formed at the reinforcing members 14 corresponding to the openings 15. The number of the openings 15 and the opening windows 22 can be arbitrarily set.
[0041]
Further, in the present embodiment, an example has been described in which the notch portion 26 is provided in the frame portion 23 to prevent deformation of the reinforcing member 14 in the plate thickness direction at the time of cutting the opening window portion 22, but the present invention is not limited to this. The notch 26 may be provided at any position of the reinforcing member 14 as long as the deformation of the reinforcing member 14 in the thickness direction can be prevented during the cutting of the opening window 24.
[0042]
Further, in the present embodiment, the example in which the evaporation mask 12 and the mask holder 13 are fixed by the fixing means including the screw B has been described, but the fixing means for fixing the evaporation mask 12 and the mask holder 13 is optional.
[0043]
In this embodiment, the case where the reinforcing member 14 is stored in the storage wall 18 of the mask holder 13 has been described. For example, after storing the reinforcing member 14 in the storage wall 18, the reinforcing member 14 and the mask holder 13 are screwed together. It may be fixed. In this case, when the upper portion of the screw protrudes from the surface of the frame portion 23 of the reinforcing member 14 or the surface of the support portion 19 of the mask holder 13 when fixing the screw between the reinforcing member 14 and the mask holder 13, the vapor deposition mask 12 is deformed. Therefore, it is necessary to bury the upper part of the screw in the frame 23 of the reinforcing member 14 when fixing the screw.
[0044]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an evaporation jig that can achieve an initial object and can increase the accuracy of the evaporation position on a member to be evaporated.
[Brief description of the drawings]
FIG. 1 is a diagram showing a vapor deposition apparatus according to an embodiment of the present invention.
FIG. 2 is a view showing an evaporation source according to the embodiment.
FIG. 3 is a perspective view showing a deposition jig according to the embodiment.
FIG. 4 is a sectional view of the vapor deposition jig according to the embodiment.
[Explanation of symbols]
A evaporation apparatus 2 vacuum chamber 3 evaporation source 4 evaporation material 10 translucent substrate (member to be evaporated)
DESCRIPTION OF SYMBOLS 11 Deposition jig 12 Deposition mask 13 Mask holder 14 Reinforcement member 15 Opening 16 Mask part 18 Storage wall 19 Supporting part 20 Window part 22 Opening window part 23 Frame part 24 Deflection prevention part 26 Notch part J1 Deposition path

Claims (4)

蒸着材料の蒸発によって被蒸着部材に所定の蒸着パターンを形成してなる複数の開口部と前記被蒸着部材への前記蒸着パターンの形成を阻止するマスク部とを有する蒸着マスクと、
この蒸着マスクを支持するマスクホルダと、
前記蒸着マスクと前記マスクホルダとの間に狭持され前記開口部に対応する複数の開口窓部と前記マスク部の撓みを防止する撓み防止部とを有する補強部材と、
を備えたことを特徴とする蒸着用治具。
A vapor deposition mask having a plurality of openings formed by forming a predetermined vapor deposition pattern on the vapor deposition member by vaporization of the vapor deposition material and a mask portion for preventing formation of the vapor deposition pattern on the vapor deposition member,
A mask holder for supporting the evaporation mask,
A reinforcing member having a plurality of opening windows corresponding to the openings and a bending prevention portion for preventing bending of the mask portion, which is sandwiched between the vapor deposition mask and the mask holder;
A jig for vapor deposition, comprising:
前記補強部材には各開口窓部を取り囲む枠部が形成されると共に、前記枠部に切り欠き部を設けたことを特徴とする請求項1記載の蒸着用治具。The vapor deposition jig according to claim 1, wherein a frame portion surrounding each of the opening windows is formed in the reinforcing member, and a notch portion is provided in the frame portion. 前記マスクホルダに前記補強部材を収納する収納壁を設けたことを特徴とする請求項1記載の蒸着用治具。The jig for vapor deposition according to claim 1, wherein a storage wall for storing the reinforcing member is provided in the mask holder. 前記蒸着マスクは前記マスクホルダと所定の固定手段よって固定されていることを特徴とする請求項1記載の蒸着用治具。The jig for vapor deposition according to claim 1, wherein the vapor deposition mask is fixed to the mask holder by predetermined fixing means.
JP2003023485A 2003-01-31 2003-01-31 Holder for vapor deposition Abandoned JP2004232050A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
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WO2006062035A1 (en) * 2004-12-09 2006-06-15 Dai Nippon Printing Co., Ltd. Metal mask unit, method of producing the same, method of installing metal tape, and tension application device
KR100774984B1 (en) 2006-06-20 2007-11-12 주식회사 티케이씨 A variable pcb mask structure for plating equipment
KR100976617B1 (en) 2009-11-19 2010-08-18 주식회사 제온시스 Jig for vapor depositing the substrate
JP2017145491A (en) * 2016-02-19 2017-08-24 凸版印刷株式会社 Metal mask base material, vapor deposition metal mask and metal mask unit
JP2020158886A (en) * 2016-02-19 2020-10-01 凸版印刷株式会社 Method of manufacturing base material for metal mask, method of manufacturing metal mask for vapor deposition, method of manufacturing metal mask unit, and metal mask unit
JP2021181631A (en) * 2020-06-19 2021-11-25 凸版印刷株式会社 Method for producing metal mask base material, method for producing vapor deposition metal mask and metal mask base material

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006062035A1 (en) * 2004-12-09 2006-06-15 Dai Nippon Printing Co., Ltd. Metal mask unit, method of producing the same, method of installing metal tape, and tension application device
KR101011901B1 (en) 2004-12-09 2011-02-01 다이니폰 인사츠 가부시키가이샤 Metal mask unit, method of producing the same, method of installing metal tape, and tension application device
KR100774984B1 (en) 2006-06-20 2007-11-12 주식회사 티케이씨 A variable pcb mask structure for plating equipment
KR100976617B1 (en) 2009-11-19 2010-08-18 주식회사 제온시스 Jig for vapor depositing the substrate
JP2017145491A (en) * 2016-02-19 2017-08-24 凸版印刷株式会社 Metal mask base material, vapor deposition metal mask and metal mask unit
JP2020158886A (en) * 2016-02-19 2020-10-01 凸版印刷株式会社 Method of manufacturing base material for metal mask, method of manufacturing metal mask for vapor deposition, method of manufacturing metal mask unit, and metal mask unit
JP2021181631A (en) * 2020-06-19 2021-11-25 凸版印刷株式会社 Method for producing metal mask base material, method for producing vapor deposition metal mask and metal mask base material
JP7124941B2 (en) 2020-06-19 2022-08-24 凸版印刷株式会社 METHOD FOR MANUFACTURING BASE MATERIAL FOR METAL MASK, METHOD FOR MANUFACTURING METAL MASK FOR EVAPORATION, AND SUBSTRATE FOR METAL MASK

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