JP4346885B2 - Alignment method - Google Patents

Alignment method Download PDF

Info

Publication number
JP4346885B2
JP4346885B2 JP2002305392A JP2002305392A JP4346885B2 JP 4346885 B2 JP4346885 B2 JP 4346885B2 JP 2002305392 A JP2002305392 A JP 2002305392A JP 2002305392 A JP2002305392 A JP 2002305392A JP 4346885 B2 JP4346885 B2 JP 4346885B2
Authority
JP
Japan
Prior art keywords
substrate
mask
alignment
contact
rubber member
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.)
Expired - Fee Related
Application number
JP2002305392A
Other languages
Japanese (ja)
Other versions
JP2004137584A (en
Inventor
秀幸 小田木
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.)
Ulvac Inc
Original Assignee
Ulvac Inc
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 Ulvac Inc filed Critical Ulvac Inc
Priority to JP2002305392A priority Critical patent/JP4346885B2/en
Publication of JP2004137584A publication Critical patent/JP2004137584A/en
Application granted granted Critical
Publication of JP4346885B2 publication Critical patent/JP4346885B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Physical Vapour Deposition (AREA)

Description

【0001】
【発明の属する技術分野】
本発明はアライメント装置に関し、特に、基板とマスクの位置合わせに用いるアライメント装置に関する。
【0002】
【従来の技術】
従来より、基板とマスクとの位置合わせを行うために、図11に示すようなアライメント装置101が用いられている。
アライメント装置101はマスクホルダ120と、基板移動装置150とを有している。
【0003】
マスクホルダ120には板状のマスク115が水平に取り付けられており、基板110を基板移動装置150によりマスク115上に水平に保持させ、基板移動装置150を鉛直に下降させて基板110をマスク115上に載せる。
【0004】
基板110とマスク115には不図示のアライメントマークが設けられており、基板110をマスク115に密着させた状態で、各アライメントマークの座標を測定し、測定された座標から、アライメントマークが位置すべき座標までの位置ずれを求める。
【0005】
次いで、基板移動装置150により基板110をマスク115から鉛直方向に持ち上げ、上述した工程で求められた位置ずれ量に基づき、マスクホルダ120と基板移動装置150を相対的に移動させて位置合わせを行った後、基板移動装置150により基板110を鉛直方向に下降させ、マスク115に載せると、基板110のアライメントマークとマスク115のアライメントマークが互いに対応する位置に配置された状態になる。
【0006】
従って、その状態で蒸着法等により成膜を行えば、マスク115のパターンに基づき、基板110表面の所定位置に薄膜のパターンを形成することができる。しかしながら、従来のアライメント装置101でガラス基板のような基板110と、金属からなるマスク115との位置合わせを行う場合、基板110をマスク115から基板移動装置150に移し替えるときや、基板110を基板移動装置150からマスク115上に移し替えるときに基板110がマスク115上で滑り、基板110の位置がずれることがある。
【0007】
基板110の位置がずれると位置合わせが不正確になり、また、位置ずれ量が著しく大きい場合には位置合わせをやり直す必要があるので、位置合わせに要する時間が長くなってしまう。
【0008】
【特許文献1】
特開2002−241924号公報 (第3−4頁、第2図)
【特許文献2】
特開平9−209127号公報 (第4頁、第1図)
【0009】
【発明が解決しようとする課題】
本発明は上記従来技術の要求に応じるために創作されたものであり、その目的は、基板の位置ずれを防止するアライメント装置を提供することである。
【0010】
【課題を解決するための手段】
上記課題を解決するために、請求項1記載の発明は、アライメント方法であって、基板を基板保持部から、マスクホルダのマスク側ゴム部材上に移し変え、前記基板を前記マスクホルダに配置されたマスク上に配置した後、前記マスクを前記基板に密着させ、前記マスクと前記基板との位置ずれ量を求める仮密着工程と、前記基板を前記マスク側ゴム部材上から前記基板保持部に移し替え、前記仮密着工程で得られた位置ずれ量に基づいて、前記基板と前記マスクとを相対的に位置合わせをする位置合わせ工程と、前記位置合わせ工程の後、前記基板を前記基板保持部から前記マスク側ゴム部材上に載置し、前記マスクを前記基板に密着させる密着工程とを有するアライメント方法である。
請求項2記載の発明は、請求項1記載のアライメント方法であって、前記仮密着工程と前記密着工程は、前記基板の前記マスク側ゴム部材に載置される面とは反対側の面に磁石を有する基板密着部材を接触させ、前記基板密着部材により発生する磁力により、前記マスクを前記基板に密着させるアライメント方法である。
【0011】
【発明の実施の形態】
以下で図面を参照し、本発明の実施形態について説明する。
図1の符号1は本発明の成膜装置の一例を示している。この成膜装置1は、搬送室2と、複数の成膜室3とを有している。ここでは成膜装置1は3台の成膜室3を有しており、各成膜室3はそれぞれ同じ搬送室2に接続されている。
【0012】
図2は成膜室3を示す斜視図である。図2を参照し、成膜室3は装置本体である真空槽12を有しており、真空槽12内には、成膜源である蒸着源13が真空槽12の一壁面の近傍に配置され、該壁面と対向する壁面の近傍位置には本発明のアライメント装置5が蒸着源13と対向する位置に配置されている。
ここでは、蒸着源13は真空槽12の底壁側に配置され、アライメント装置5は蒸着源13の上方の真空槽12の天井側に配置されている。
【0013】
図3はアライメント装置5の内部構成を示す図面であり、アライメント装置5は、主軸部40と、副軸部50とを有している。主軸部40は、第一、第二のモータ46、47と、筒41と、棒42と、マスクホルダ20と、基板密着部材45とを有している。
真空槽12の天井の真空槽12外部側の面には台座44が取り付けられており、第一のモータ46は台座44の上部の真空槽12天井の上方位置に配置されている。
【0014】
真空槽12の天井の第一のモータ46の直下位置には開口38が形成されており、筒41は開口38に鉛直に挿通され、下端が真空槽12内に突き出された状態で、上端が第一のモータ46に接続されている。筒41の上下方向の中央部分は、真空槽12の外部に位置しており、その部分には封止部48が取り付けられている。
【0015】
封止部48には筒状のベロース49の上端が取り付けられており、ベロース49の下端は真空槽12の天井に取り付けられている。筒41はこのベロース49に挿通された状態になっている。
【0016】
ベロース49の上端と封止部48との間、ベロース49の下端と真空槽12の天井との間、及び封止部48と筒41との間は気密に構成されており、真空槽12の内部と、ベロース49の内部とは外部空間から遮断されている。台座44には容器43が開口を下にして取り付けられ、その容器43内には第一のモータ46が収容されている。
【0017】
第二のモータ47は容器43の上部に固定されており、棒42は筒41に挿通された状態でその上端が第二のモータ47に接続され、その下端が筒41の下端から真空槽12内に突き出されている。
【0018】
封止部48と筒41の間及び筒41の上端内部と棒42との間にはそれぞれ磁性流体シールが設けられており、真空槽12内を真空雰囲気にし、第一、第二のモータ46、47を動作させ、筒41をその中心軸線を中心として回転させ、棒42を上下に移動させても、真空槽12内が気密に維持されるようになっている。
【0019】
棒42の下端には支持板36が水平に取り付けられており、棒42を上下させると支持板36が上下に移動するようになっている。マスクホルダ20は板状のハンド21を有しており、ハンド21はアーム31を介して支持板36よりも下方位置で筒41の下端に水平に取り付けられ、上述したように筒41を回転させると、ハンド21が支持板36の下方位置で水平面内で回転するようになっている。
【0020】
支持板36には伸縮可能な棒状の押さえ部37が複数本取り付けられており、それらの下端は支持板36から鉛直方向下方に向けて突き出されているので、マスク15をマスクホルダ20に配置し、後述する基板10をマスク15と支持板36との間に配置した状態で、支持板36を下方に移動させると、押さえ部37の下端が基板10に当接され、更に支持板36を下降させると押さえ部37が基板10をマスクホルダ20に押さえ付けた状態で縮むようになっている。
【0021】
基材密着部材45は板状であり、支持板36の裏面であって、真空槽12の底壁側に向けられた面に水平に取り付けられているので、押さえ部37が縮むと基材密着部材45が基板10に当接されるようになっている。
【0022】
基板密着部材45の基板10に密着される面は平坦であり、基板密着部材45は磁力によってマスク15を吸着可能な磁石で構成されているので、基板密着部材45を基板10に当接させると、磁力によりマスク15が基板密着部材45に引き付けられ、図9に示すように基板の裏面であって、後述する薄膜が形成される成膜面にマスク15の表面が当接されるようになっている。
【0023】
副軸部50はそれぞれ4個の第三のモータ56と、軸52と、基板保持部53とを有しており、前記各第三のモータ56は取り付け板51上に固定されている。真空槽12外には不図示の移動手段が配置されており、取り付け板51はこの移動手段によって水平に保持されており、全ての第三のモータ56が上下方向及び水平方向に移動可能に構成されている。
【0024】
取り付け板51と真空槽12の天井との間であって、第三のモータ56の真下位置には筒状のベロース59が配置され、ベロース59の上端は取り付け板51に、ベロース59の下端は真空槽12の天井にそれぞれ気密に固定されている。
【0025】
真空槽12の天井と取り付け板51の、第三のモータ56の真下位置であって、ベロース59内部と連通する位置には孔がそれぞれ形成されており、軸52はそれらの孔及びベロース59に鉛直に挿通され、下端が真空槽12内部に突き出された状態で、上端が第三のモータ56に取り付けられている。
【0026】
取り付け板51上の孔には封止部58が配置されており、封止部58と取り付け板51との間と、封止部58と軸52との間と、ベロース59の上端と取り付け板51の間と、ベロース59の下端と取り付け板51の間はそれぞれ気密に構成され、真空槽12の内部とベロース59の内部は外部空間から遮断されている。
【0027】
このベロース59は伸縮可能であり、真空槽12内に真空雰囲気を形成した状態で、移動手段によって取り付け板51を上下又は水平に移動させると、真空槽12内の真空雰囲気が維持された状態で、各第三のモータ56と各軸52とが一緒に上下又は水平方向に移動するようになっている。
【0028】
また、封止部58と軸52との間には磁性流体シールが設けられており、真空槽12内の真空雰囲気を維持をしながら、第三のモータ56を起動させ、軸52をその中心軸線を中心として回転させると、真空槽12内が気密に維持された状態で、軸52の下端が回転するようになっている。
【0029】
基板保持部53は細長の板で構成され、軸52の下端に水平に取り付けられている。各軸52を水平方向に一緒に移動させると各基板保持部53は一緒に水平方向に移動し、また各軸52を上下方向に一緒に移動させると各基板保持部53の高さはマスクホルダ20と支持板36との間で一緒に上下方向に移動するようになっている。また、第三のモータ56により軸52を回転させると、基板保持部53は水平面内で回転するようになっている。
【0030】
次に、本発明のアライメント装置5のマスクホルダ20について説明する。図4を参照し、マスクホルダ20はハンド21と、ハンド21に取り付けられた枠部材22とを有しており、この枠部材22にはマスク15が水平に取り付けられている。
【0031】
枠部材22の表面であってマスク15が配置される側の面には、フッ素ゴム(例えば、デュポン ダウ エラストマー ジャパン(株)社製の商品名「カルレッツ」)等のゴム材料の小片であるマスク側ゴム部材24が、各角部分にそれぞれ1個以上(ここでは2個ずつ)設けられている。
【0032】
マスク15をマスクホルダ20に配置した状態では、マスク側ゴム部材24の先端はマスク15の表面よりも上方に突き出されており、本発明に用いられる基板10は、その平面形状がマスク側ゴム部材24で囲まれた領域よりも大きいので、基板10はマスク側ゴム部材24に載置され、マスク15上に保持されるようになっている。
【0033】
その状態では基板10はマスク15に直接接触せず、マスク側ゴム部材24の上端が突き出された分だけ離間しているので、基板10が動くことなくマスク15上に保持されるようになっている。
【0034】
次に、副軸部50を用いて基板10をマスク15上に配置する工程について説明する。
各軸52はマスク15の枠部材22よりも外側に位置し、各基板保持部53を同じ高さに配置させ、各基板保持部53の先端をマスク15に向ける。基板保持部53の先端には保持部側ゴム部材54が設けられており、上述した基板10を保持部側ゴム部材54上に載せると、基板10がマスク15上で保持部側ゴム部材24に保持されるようになっている。
【0035】
その状態で、各基板保持部53を一緒に下降させ、基板10を下方に移動させると、マスク側ゴム部材24の先端が基板10の裏面に当接し、基板10が保持部側ゴム部材54からマスク側ゴム部材24に移し替えられるようになっている。
【0036】
枠部材22のマスク15よりも外周位置には凹部29が形成されており、基板10がマスク側ゴム部材24に移し替えられた時には、基板保持部53の先端が凹部29内に位置しており、その状態で軸52を回転させると、基板保持部53の先端が基板10の下方位置から退避されるようになっている。
【0037】
次に、この成膜装置1を用いて成膜対象物である基板を成膜する工程を説明する。予め、真空排気により搬送室2内と真空槽12内に所定圧力の真空雰囲気を形成しておき、図1に示すような基板搬送装置4を搬送室2に気密に接続し、成膜対象物である基板10を基板搬送装置4から搬送室2内に搬入する。
【0038】
次いで、搬送室2を成膜室3に接続し、図7(a)に示すように、搬送室2内に設置された搬送ロボット9により基板10を真空槽12内に搬入し、保持部側ゴム部材54上に基板10を載せる。
上述した工程で基板10を保持部側ゴム部材54からマスク側ゴム部材24に移し替えた後、基板保持部53の先端を基板10の下方位置から退避させる(図7(b))。
【0039】
次に、図7(c)に示すように支持板36を下降させ、基板密着部材45を基板10に当接し、基板10の成膜面にマスク15の表面を密着させる。
真空槽12の上方にはCCDカメラ60が設けられており、真空槽12天井に設けられた窓部61を介してマスク15と基板10とを観察し、マスク15が基板10に密着した状態の位置ずれ量を求める(仮密着工程)。
【0040】
例えば、マスク15と基板10の互いに対応する位置にそれぞれアライメントマークを設けておき、実際に各アライメントマークが位置する座標を測定し、各アライメントマークの位置すべき座標からその位置ずれ量を求める。
【0041】
位置ずれ量を求めた後、基板密着部材45を上方に移動させて基板10から離すと、マスク15と基板密着部材45との間の距離が大きくなり、マスク15の表面は基板10の成膜面から離れる(図7(d))。
【0042】
次に、軸52を回転させ、基板保持部53の先端を凹部29内に配置し、基板保持部53を上方に移動させて、基板10をマスク側ゴム部材24から保持部側ゴム部材54に移し替える。次いで、仮密着工程で求められた位置ずれ量に基づき、その位置ずれ量がなくなるように、マスク15を水平面内で回転させると共に基板10を水平面内で移動させる(位置合わせ)。
【0043】
位置合わせ後、マスク15と基板10の水平面内での移動を行わずに、基板10を位置ずれ量がなくなった状態を維持するように下降させ、基板10を保持部側ゴム部材54からマスク側ゴム部材24へ移し替える。
次いで、図8(f)に示すように支持板36を下降させて基板密着部材45を基板10表面に当接し、マスク15表面を基板10成膜面に密着させる。
【0044】
CCDカメラ60により、マスク15と基板10の位置ずれ量がなくなったことを確認し、アライメント工程を終了する。
上述したように、マスク側ゴム部材24はフッ素ゴムのようなゴム材料で構成されており、ガラス板のような基板10とゴム部材24、54との摩擦係数は大きいので、基板10をマスク側ゴム部材24に移し替えるときや、保持部側ゴム部材54に移し替えるときに、基板10が滑りにくい。
【0045】
従って、本発明のアライメント装置5では、仮密着後や位置合わせ後に基板10の位置ずれが起こり難く、位置合わせが正確に行われ、また、仮密着後や位置合わせ後に位置ずれが起こらなければ位置合わせをやり直す必要もないので、結果としてアライメント工程の時間が短くてすむ。
【0046】
アライメント終了後、蒸着源13に予め配置された蒸着材料を加熱すると、真空槽12内に蒸着材料の蒸気が放出される。
マスク15には所定パターンの開口が形成されており、マスク15の表面及び裏面は少なくとも外周を除く部分がマスクホルダ20から露出しているので、放出された上記はマスク15の露出された部分の開口を通って基板10の成膜面に到達する。
【0047】
このとき、マスク15の表面が基板10の成膜面に密着しているので、マスク15の開口を通過した蒸気が基板10に到達するまでに拡散せず、基板10の表面にはマスク15の開口と同じ形状の薄膜が形成される。
薄膜が所定膜厚まで成長したところで成膜を終了し、マスク15を基板10から離した後、基板保持部53により基板10を持ち上げ、搬送ロボット9により成膜後の基板10を搬送室2へ搬送する。
【0048】
次いで、その基板10を他の成膜室3に送り、各成膜室3内で成膜を行うと共に、新たな基板を基板搬送装置4から搬送室2に搬送し、前の基板10の成膜が終了した成膜室3へ送る。
【0049】
各成膜室3での成膜が終了し、薄膜が積層された状態の基板10を搬送室2から基板搬送装置4へ搬出しながら、新たな基板を搬送室2へ順次送れば複数枚の基板を連続して成膜処理することができる。
【0050】
以上はマスク15の縁部分が枠部材22に固定され、その縁部分よりも内側の部分が露出する場合について説明したが本発明はこれに限定されるものではない。
図10の符号80は本発明に用いられるマスクホルダの他の例を示している。このマスクホルダ80では、枠部材82の内周がマスク15の平面形状よりも大きく、マスク15はハンド81に直接固定され、マスク15の基板密着部材45側の面全部が枠部材22の内側に露出している。
【0051】
マスク側ゴム部材84は枠部材82上に配置されており、このマスク側ゴム部材84に基板10の四隅を載せると、マスク15の基板密着部材45側の面全部が基板10で覆われるようになっている。
【0052】
また、マスク側ゴム部材24が配置される場所は枠部材22上に限定されず、マスク15をマスクホルダ20に配置したときに、その先端がマスク15表面よりも高く突き出されるように構成されているのであればよく、例えばハンド21上に直接配置したり、マスク15上に配置することもできる。
【0053】
マスク側ゴム部材24や保持部側ゴム部材54の形状は特に限定されず、シート状や球状など種々の形状のものを用いることができる。また、それらゴム部材24、54を構成するゴム材料もフッ素ゴムに限定されず、シリコーンゴムやニトリルゴム等種々のゴム材料を用いることができるが、耐熱性などを考慮するとフッ素ゴムを用いることが望ましい。
【0054】
本発明に用いる基板の構成材料はガラスに限定されず、金属、樹脂等種々の材料からなる基板を用いることができる。
マスク15は永久磁石や電磁石等の磁石で吸着される材料の板をパターニングして形成されている。マスク15を構成する材料は特に限定されず、ニッケル(Ni)、コバルト(Co)、鉄(Fe)やFe成分の多いステンレス合金等の種々の金属材料や、また、磁石で吸着される材料と、磁石で吸着されない材料との混合物も用いることができる。
【0055】
以上は基板密着部材45を基板10に当接させる場合について説明したが、結果としてマスク15が基板10に密着するのであれば、基板密着部材45を基板10に当接する必要はない。
【0056】
基板密着部材45の構成材料も磁石(永久磁石)に限定されず、基板密着部材45をコイルで構成し、該コイルに通電して磁界を発生させることで、マスク15表面を基板10の成膜面に密着させることもできる。
【0057】
また、基板10が柔軟性を有する場合には、基板密着部材45を基板10に押し付けることで、基板10の成膜面をマスク15表面に密着させることもできる。また、成膜源の種類も蒸着源に限定されず、本発明の成膜装置の成膜源としては、スパッタ源などを用いることもできる。
【0058】
【発明の効果】
本発明によれば、位置ずれ量を測定した後及び位置合わせを行った後に基板の位置ずれが起こらないので、位置合わせをやり直す必要がなく、正確、かつ短時間で基板の位置合わせを行うことができる。
【図面の簡単な説明】
【図1】本発明に用いられる成膜装置の一例を説明する斜視図
【図2】成膜室の一例を説明する斜視図
【図3】本発明のアライメント装置の内部構成を説明する図
【図4】マスクホルダの一例を説明する斜視図
【図5】基板をマスク上に配置する工程を説明する斜視図
【図6】基板をマスク上に配置した状態を説明する斜視図
【図7】(a)〜(d):本発明のアライメント装置によるアライメント工程の前半を説明する斜視図
【図8】(e)、(f):本発明のアライメント装置によるアライメント工程の後半を説明する斜視図
【図9】マスクを基板に密着した状態を説明する図
【図10】本発明に用いるマスクホルダの他の例を説明する斜視図
【図11】従来技術のアライメント装置を説明する図
【符号の説明】
1……成膜装置 5……アライメント装置 10……基板 15……マスク 20、80……マスクホルダ 24、84……マスク側ゴム部材 45……基板密着部材 53……基板保持部材
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an alignment apparatus, and more particularly to an alignment apparatus used for alignment of a substrate and a mask.
[0002]
[Prior art]
Conventionally, an alignment apparatus 101 as shown in FIG. 11 is used to align a substrate and a mask.
The alignment apparatus 101 includes a mask holder 120 and a substrate moving device 150.
[0003]
A plate-like mask 115 is horizontally attached to the mask holder 120, and the substrate 110 is held horizontally on the mask 115 by the substrate moving device 150, and the substrate moving device 150 is lowered vertically so that the substrate 110 is masked 115. Put it on top.
[0004]
The substrate 110 and the mask 115 are provided with alignment marks (not shown). The coordinates of each alignment mark are measured in a state where the substrate 110 is in close contact with the mask 115, and the alignment marks are positioned from the measured coordinates. Find the displacement to the power coordinates.
[0005]
Next, the substrate 110 is lifted from the mask 115 by the substrate moving device 150 in the vertical direction, and the mask holder 120 and the substrate moving device 150 are moved relative to each other based on the amount of displacement obtained in the above-described process. After that, when the substrate 110 is lowered in the vertical direction by the substrate moving device 150 and placed on the mask 115, the alignment mark of the substrate 110 and the alignment mark of the mask 115 are arranged at positions corresponding to each other.
[0006]
Therefore, if a film is formed by vapor deposition in that state, a thin film pattern can be formed at a predetermined position on the surface of the substrate 110 based on the pattern of the mask 115. However, when performing alignment between the substrate 110 such as a glass substrate and the metal mask 115 with the conventional alignment apparatus 101, the substrate 110 is transferred from the mask 115 to the substrate moving device 150, or the substrate 110 is transferred to the substrate. When transferring from the moving device 150 onto the mask 115, the substrate 110 may slide on the mask 115 and the position of the substrate 110 may shift.
[0007]
If the position of the substrate 110 is displaced, the alignment becomes inaccurate, and if the amount of displacement is extremely large, it is necessary to perform the alignment again, which increases the time required for the alignment.
[0008]
[Patent Document 1]
JP 2002-241924 (page 3-4, FIG. 2)
[Patent Document 2]
Japanese Patent Laid-Open No. 9-209127 (page 4, FIG. 1)
[0009]
[Problems to be solved by the invention]
The present invention was created to meet the above-described demands of the prior art, and an object of the present invention is to provide an alignment apparatus that prevents the displacement of the substrate.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is an alignment method, wherein the substrate is transferred from the substrate holding portion onto the mask side rubber member of the mask holder, and the substrate is disposed on the mask holder. After placing the mask on the mask, the mask is brought into close contact with the substrate, and a temporary contact step for obtaining a positional deviation amount between the mask and the substrate; and the substrate is transferred from the mask side rubber member to the substrate holding portion. In other words, based on the amount of misalignment obtained in the temporary adhesion step, the substrate and the mask are relatively aligned, and after the alignment step, the substrate is held by the substrate holder. To an adhesion step of placing the mask on the mask side rubber member and bringing the mask into close contact with the substrate.
Invention of Claim 2 is the alignment method of Claim 1 , Comprising: The said temporary contact | adherence process and the said contact | adherence process are on the surface on the opposite side to the surface mounted in the said mask side rubber member of the said board | substrate. In this alignment method, a substrate adhesion member having a magnet is brought into contact with the substrate, and the mask is adhered to the substrate by a magnetic force generated by the substrate adhesion member.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
Reference numeral 1 in FIG. 1 shows an example of a film forming apparatus of the present invention. The film forming apparatus 1 includes a transfer chamber 2 and a plurality of film forming chambers 3. Here, the film forming apparatus 1 has three film forming chambers 3, and each film forming chamber 3 is connected to the same transfer chamber 2.
[0012]
FIG. 2 is a perspective view showing the film forming chamber 3. Referring to FIG. 2, the film formation chamber 3 has a vacuum chamber 12 that is an apparatus main body, and a vapor deposition source 13 that is a film formation source is disposed in the vicinity of one wall surface of the vacuum chamber 12 in the vacuum chamber 12. The alignment apparatus 5 of the present invention is disposed at a position facing the vapor deposition source 13 in the vicinity of the wall surface facing the wall surface.
Here, the vapor deposition source 13 is disposed on the bottom wall side of the vacuum chamber 12, and the alignment apparatus 5 is disposed on the ceiling side of the vacuum chamber 12 above the vapor deposition source 13.
[0013]
FIG. 3 is a diagram showing an internal configuration of the alignment apparatus 5, and the alignment apparatus 5 has a main shaft portion 40 and a sub shaft portion 50. The main shaft portion 40 includes first and second motors 46 and 47, a cylinder 41, a rod 42, a mask holder 20, and a substrate contact member 45.
A pedestal 44 is attached to the surface of the vacuum chamber 12 on the outside of the vacuum chamber 12, and the first motor 46 is disposed above the ceiling of the vacuum chamber 12 above the pedestal 44.
[0014]
An opening 38 is formed at a position directly below the first motor 46 on the ceiling of the vacuum chamber 12, the cylinder 41 is vertically inserted through the opening 38, and the upper end is protruded into the vacuum chamber 12. It is connected to the first motor 46. A central portion in the vertical direction of the cylinder 41 is located outside the vacuum chamber 12, and a sealing portion 48 is attached to that portion.
[0015]
An upper end of a cylindrical bellows 49 is attached to the sealing portion 48, and the lower end of the bellows 49 is attached to the ceiling of the vacuum chamber 12. The cylinder 41 is inserted through the bellows 49.
[0016]
The space between the upper end of the bellows 49 and the sealing portion 48, the space between the lower end of the bellows 49 and the ceiling of the vacuum chamber 12, and the space between the sealing portion 48 and the cylinder 41 are airtight. The inside and the inside of the bellows 49 are blocked from the external space. A container 43 is attached to the base 44 with the opening facing downward, and a first motor 46 is accommodated in the container 43.
[0017]
The second motor 47 is fixed to the upper portion of the container 43, the rod 42 is inserted into the cylinder 41, the upper end thereof is connected to the second motor 47, and the lower end thereof is connected to the vacuum chamber 12 from the lower end of the cylinder 41. It sticks out inside.
[0018]
Magnetic fluid seals are provided between the sealing portion 48 and the cylinder 41, and between the upper end of the cylinder 41 and the rod 42, respectively, and the inside of the vacuum chamber 12 is evacuated to provide a first and second motor 46. 47, the cylinder 41 is rotated about its central axis, and the rod 42 is moved up and down, so that the inside of the vacuum chamber 12 is kept airtight.
[0019]
A support plate 36 is horizontally attached to the lower end of the rod 42, and the support plate 36 moves up and down when the rod 42 is moved up and down. The mask holder 20 has a plate-like hand 21, and the hand 21 is horizontally attached to the lower end of the cylinder 41 at a position lower than the support plate 36 via the arm 31, and rotates the cylinder 41 as described above. The hand 21 rotates in a horizontal plane at a position below the support plate 36.
[0020]
A plurality of rod-like pressing portions 37 that can be expanded and contracted are attached to the support plate 36, and their lower ends protrude from the support plate 36 downward in the vertical direction, so that the mask 15 is disposed on the mask holder 20. When the support plate 36 is moved downward in a state where the substrate 10 described later is disposed between the mask 15 and the support plate 36, the lower end of the pressing portion 37 is brought into contact with the substrate 10 and the support plate 36 is further lowered. As a result, the pressing portion 37 is contracted in a state where the substrate 10 is pressed against the mask holder 20.
[0021]
The substrate adhesion member 45 is plate-shaped and is horizontally attached to the back surface of the support plate 36 and directed to the bottom wall side of the vacuum chamber 12, so that the substrate adhesion when the pressing portion 37 contracts. The member 45 is brought into contact with the substrate 10.
[0022]
Since the surface of the substrate contact member 45 that is in close contact with the substrate 10 is flat, and the substrate contact member 45 is composed of a magnet that can attract the mask 15 by magnetic force, the substrate contact member 45 is brought into contact with the substrate 10. The mask 15 is attracted to the substrate adhesion member 45 by the magnetic force, and the surface of the mask 15 comes into contact with the film forming surface on the back surface of the substrate on which a thin film to be described later is formed as shown in FIG. ing.
[0023]
Each of the auxiliary shaft portions 50 includes four third motors 56, a shaft 52, and a substrate holding portion 53, and each of the third motors 56 is fixed on a mounting plate 51. A moving means (not shown) is disposed outside the vacuum chamber 12, and the mounting plate 51 is held horizontally by the moving means, and all the third motors 56 can be moved in the vertical direction and the horizontal direction. Has been.
[0024]
A cylindrical bellows 59 is arranged between the mounting plate 51 and the ceiling of the vacuum chamber 12 and directly below the third motor 56. The upper end of the bellows 59 is on the mounting plate 51 and the lower end of the bellows 59 is on the bottom. Each is fixed to the ceiling of the vacuum chamber 12 in an airtight manner.
[0025]
Holes are formed at positions where the ceiling of the vacuum chamber 12 and the mounting plate 51 are directly below the third motor 56 and communicate with the inside of the bellows 59, and the shaft 52 is formed in the holes and the bellows 59. The upper end is attached to the third motor 56 with the lower end protruding into the vacuum chamber 12 and inserted vertically.
[0026]
Sealing portions 58 are arranged in the holes on the mounting plate 51, between the sealing portion 58 and the mounting plate 51, between the sealing portion 58 and the shaft 52, the upper end of the bellows 59, and the mounting plate. 51, and the lower end of the bellows 59 and the mounting plate 51 are hermetically sealed, and the inside of the vacuum chamber 12 and the inside of the bellows 59 are blocked from the external space.
[0027]
The bellows 59 can be expanded and contracted. When the mounting plate 51 is moved vertically or horizontally by the moving means in a state where a vacuum atmosphere is formed in the vacuum chamber 12, the vacuum atmosphere in the vacuum chamber 12 is maintained. Each of the third motors 56 and each of the shafts 52 are moved up and down or horizontally.
[0028]
In addition, a magnetic fluid seal is provided between the sealing portion 58 and the shaft 52, and the third motor 56 is started while maintaining the vacuum atmosphere in the vacuum chamber 12, and the shaft 52 is moved to its center. When rotating around the axis, the lower end of the shaft 52 rotates in a state where the inside of the vacuum chamber 12 is kept airtight.
[0029]
The substrate holding portion 53 is formed of an elongated plate and is horizontally attached to the lower end of the shaft 52. When the respective axes 52 are moved together in the horizontal direction, the respective substrate holders 53 are moved together in the horizontal direction, and when the respective axes 52 are moved together in the vertical direction, the height of each of the substrate holders 53 becomes the mask holder. 20 and the support plate 36 move together in the vertical direction. Further, when the shaft 52 is rotated by the third motor 56, the substrate holding portion 53 is rotated in a horizontal plane.
[0030]
Next, the mask holder 20 of the alignment apparatus 5 of the present invention will be described. Referring to FIG. 4, the mask holder 20 has a hand 21 and a frame member 22 attached to the hand 21, and a mask 15 is attached horizontally to the frame member 22.
[0031]
On the surface of the frame member 22 on the side where the mask 15 is disposed, a mask that is a small piece of rubber material such as fluoro rubber (for example, trade name “Kalrez” manufactured by DuPont Dow Elastomer Japan Co., Ltd.). One or more (two in this case) side rubber members 24 are provided at each corner.
[0032]
In a state where the mask 15 is disposed on the mask holder 20, the tip of the mask side rubber member 24 protrudes above the surface of the mask 15, and the substrate 10 used in the present invention has a planar shape in the mask side rubber member. Since the area is larger than the area surrounded by 24, the substrate 10 is placed on the mask-side rubber member 24 and held on the mask 15.
[0033]
In this state, the substrate 10 is not in direct contact with the mask 15 and is separated by the protruding upper end of the mask-side rubber member 24, so that the substrate 10 is held on the mask 15 without moving. Yes.
[0034]
Next, a process of placing the substrate 10 on the mask 15 using the auxiliary shaft portion 50 will be described.
Each shaft 52 is located outside the frame member 22 of the mask 15, each substrate holding portion 53 is disposed at the same height, and the tip of each substrate holding portion 53 faces the mask 15. A holding portion side rubber member 54 is provided at the tip of the substrate holding portion 53. When the above-described substrate 10 is placed on the holding portion side rubber member 54, the substrate 10 is placed on the holding portion side rubber member 24 on the mask 15. It is supposed to be retained.
[0035]
In this state, when the substrate holding portions 53 are lowered together and the substrate 10 is moved downward, the tip of the mask side rubber member 24 comes into contact with the back surface of the substrate 10, and the substrate 10 is moved from the holding portion side rubber member 54. The mask side rubber member 24 can be transferred.
[0036]
A recess 29 is formed in the outer peripheral position of the frame member 22 from the mask 15. When the substrate 10 is transferred to the mask side rubber member 24, the tip of the substrate holding portion 53 is positioned in the recess 29. When the shaft 52 is rotated in this state, the tip of the substrate holding portion 53 is retracted from the lower position of the substrate 10.
[0037]
Next, a process of forming a film as a film formation target using the film forming apparatus 1 will be described. A vacuum atmosphere of a predetermined pressure is formed in advance in the transfer chamber 2 and the vacuum chamber 12 by evacuation, and a substrate transfer apparatus 4 as shown in FIG. Is transferred from the substrate transfer device 4 into the transfer chamber 2.
[0038]
Next, the transfer chamber 2 is connected to the film forming chamber 3, and the substrate 10 is transferred into the vacuum chamber 12 by the transfer robot 9 installed in the transfer chamber 2 as shown in FIG. The substrate 10 is placed on the rubber member 54.
After the substrate 10 is transferred from the holding portion side rubber member 54 to the mask side rubber member 24 in the above-described process, the tip of the substrate holding portion 53 is retracted from the lower position of the substrate 10 (FIG. 7B).
[0039]
Next, as shown in FIG. 7C, the support plate 36 is lowered, the substrate contact member 45 is brought into contact with the substrate 10, and the surface of the mask 15 is brought into close contact with the film formation surface of the substrate 10.
A CCD camera 60 is provided above the vacuum chamber 12. The mask 15 and the substrate 10 are observed through the window 61 provided on the ceiling of the vacuum chamber 12, and the mask 15 is in close contact with the substrate 10. The amount of displacement is obtained (temporary contact process).
[0040]
For example, alignment marks are provided at positions corresponding to each other on the mask 15 and the substrate 10, the coordinates at which each alignment mark is actually measured are measured, and the positional deviation amount is obtained from the coordinates at which each alignment mark is to be positioned.
[0041]
After obtaining the positional deviation amount, when the substrate contact member 45 is moved upward and away from the substrate 10, the distance between the mask 15 and the substrate contact member 45 increases, and the surface of the mask 15 is formed on the substrate 10. It leaves | separates from a surface (FIG.7 (d)).
[0042]
Next, the shaft 52 is rotated, the tip of the substrate holding part 53 is placed in the recess 29, the substrate holding part 53 is moved upward, and the substrate 10 is moved from the mask side rubber member 24 to the holding part side rubber member 54. Transfer. Next, the mask 15 is rotated in the horizontal plane and the substrate 10 is moved in the horizontal plane (position alignment) so that the positional shift amount is eliminated based on the positional shift amount obtained in the temporary contact process.
[0043]
After the alignment, without moving the mask 15 and the substrate 10 in the horizontal plane, the substrate 10 is lowered so as to maintain a state in which the amount of displacement is eliminated, and the substrate 10 is moved from the holding unit side rubber member 54 to the mask side. Transfer to rubber member 24.
Next, as shown in FIG. 8 (f), the support plate 36 is lowered to bring the substrate contact member 45 into contact with the surface of the substrate 10, thereby bringing the surface of the mask 15 into close contact with the film formation surface of the substrate 10.
[0044]
The CCD camera 60 confirms that the amount of positional deviation between the mask 15 and the substrate 10 has disappeared, and ends the alignment process.
As described above, the mask side rubber member 24 is made of a rubber material such as fluoro rubber, and the friction coefficient between the substrate 10 such as a glass plate and the rubber members 24 and 54 is large. When transferring to the rubber member 24 or when transferring to the holding portion side rubber member 54, the substrate 10 is difficult to slip.
[0045]
Therefore, in the alignment apparatus 5 of the present invention, the positional displacement of the substrate 10 hardly occurs after temporary contact or after alignment, and the alignment is performed accurately. There is no need to redo the alignment, resulting in a short alignment process time.
[0046]
After the alignment, when the vapor deposition material previously disposed in the vapor deposition source 13 is heated, vapor of the vapor deposition material is released into the vacuum chamber 12.
The mask 15 has an opening of a predetermined pattern, and at least a portion excluding the outer periphery of the front surface and the back surface of the mask 15 is exposed from the mask holder 20. It reaches the film formation surface of the substrate 10 through the opening.
[0047]
At this time, since the surface of the mask 15 is in close contact with the film formation surface of the substrate 10, the vapor that has passed through the opening of the mask 15 does not diffuse until reaching the substrate 10, and the surface of the mask 15 does not reach the surface of the substrate 10. A thin film having the same shape as the opening is formed.
When the thin film has grown to a predetermined thickness, the film formation is completed, the mask 15 is separated from the substrate 10, the substrate 10 is lifted by the substrate holding unit 53, and the substrate 10 after the film formation is transferred to the transfer chamber 2 by the transfer robot 9. Transport.
[0048]
Next, the substrate 10 is sent to the other film forming chambers 3 to form a film in each film forming chamber 3, and a new substrate is transferred from the substrate transfer device 4 to the transfer chamber 2 to form the previous substrate 10. The film is sent to the film formation chamber 3 where the film has been completed.
[0049]
When the film formation in each film formation chamber 3 is completed and the substrate 10 in a state where the thin film is laminated is carried out from the transfer chamber 2 to the substrate transfer apparatus 4 and a new substrate is sequentially sent to the transfer chamber 2, a plurality of sheets are obtained. The substrate can be continuously formed.
[0050]
Although the description has been given of the case where the edge portion of the mask 15 is fixed to the frame member 22 and the portion inside the edge portion is exposed, the present invention is not limited to this.
The code | symbol 80 of FIG. 10 has shown the other example of the mask holder used for this invention. In this mask holder 80, the inner periphery of the frame member 82 is larger than the planar shape of the mask 15, the mask 15 is directly fixed to the hand 81, and the entire surface of the mask 15 on the substrate contact member 45 side is inside the frame member 22. Exposed.
[0051]
The mask side rubber member 84 is disposed on the frame member 82, and when the four corners of the substrate 10 are placed on the mask side rubber member 84, the entire surface of the mask 15 on the substrate contact member 45 side is covered with the substrate 10. It has become.
[0052]
Further, the place where the mask side rubber member 24 is arranged is not limited to the frame member 22, and when the mask 15 is arranged on the mask holder 20, the tip thereof protrudes higher than the surface of the mask 15. For example, it may be arranged directly on the hand 21 or on the mask 15.
[0053]
The shapes of the mask side rubber member 24 and the holding portion side rubber member 54 are not particularly limited, and various shapes such as a sheet shape and a spherical shape can be used. Further, the rubber material constituting these rubber members 24 and 54 is not limited to fluoro rubber, and various rubber materials such as silicone rubber and nitrile rubber can be used. However, considering heat resistance, fluoro rubber is used. desirable.
[0054]
The constituent material of the substrate used in the present invention is not limited to glass, and substrates made of various materials such as metals and resins can be used.
The mask 15 is formed by patterning a plate of a material attracted by a magnet such as a permanent magnet or an electromagnet. The material constituting the mask 15 is not particularly limited, and various metal materials such as nickel (Ni), cobalt (Co), iron (Fe), a stainless steel alloy having a large Fe component, and materials adsorbed by a magnet Mixtures with materials that are not adsorbed by magnets can also be used.
[0055]
The case where the substrate contact member 45 is brought into contact with the substrate 10 has been described above. However, if the mask 15 is brought into contact with the substrate 10 as a result, the substrate contact member 45 need not be brought into contact with the substrate 10.
[0056]
The constituent material of the substrate adhesion member 45 is not limited to a magnet (permanent magnet), and the substrate adhesion member 45 is constituted by a coil, and a magnetic field is generated by energizing the coil, whereby the surface of the mask 15 is formed on the substrate 10. It can also be in close contact with the surface.
[0057]
Further, when the substrate 10 has flexibility, the deposition surface of the substrate 10 can be brought into close contact with the surface of the mask 15 by pressing the substrate contact member 45 against the substrate 10. Further, the type of film forming source is not limited to the vapor deposition source, and a sputtering source or the like can be used as the film forming source of the film forming apparatus of the present invention.
[0058]
【The invention's effect】
According to the present invention, since the positional deviation of the substrate does not occur after measuring the positional deviation amount and after performing the positional alignment, it is not necessary to perform the positional alignment again, and the positional alignment of the substrate is performed accurately and in a short time. Can do.
[Brief description of the drawings]
1 is a perspective view illustrating an example of a film forming apparatus used in the present invention. FIG. 2 is a perspective view illustrating an example of a film forming chamber. FIG. 3 is a diagram illustrating an internal configuration of an alignment apparatus according to the present invention. 4 is a perspective view for explaining an example of a mask holder. FIG. 5 is a perspective view for explaining a step of placing a substrate on the mask. FIG. 6 is a perspective view for explaining a state in which the substrate is placed on the mask. FIGS. 8A and 8D are perspective views for explaining the first half of the alignment process by the alignment apparatus of the present invention. FIGS. 8E and 8F are perspective views for explaining the second half of the alignment process by the alignment apparatus of the present invention. 9 is a diagram for explaining a state in which a mask is in close contact with a substrate. FIG. 10 is a perspective view for explaining another example of a mask holder used in the present invention. FIG. 11 is a diagram for explaining a conventional alignment apparatus. Explanation】
DESCRIPTION OF SYMBOLS 1 ... Film-forming apparatus 5 ... Alignment apparatus 10 ... Substrate 15 ... Mask 20, 80 ... Mask holder 24, 84 ... Mask side rubber member 45 ... Substrate adhesion member 53 ... Substrate holding member

Claims (2)

基板を基板保持部から、マスクホルダのマスク側ゴム部材上に移し変え、前記基板を前記マスクホルダに配置されたマスク上に配置した後、前記マスクを前記基板に密着させ、前記マスクと前記基板との位置ずれ量を求める仮密着工程と、
前記基板を前記マスク側ゴム部材上から前記基板保持部に移し替え、前記仮密着工程で得られた位置ずれ量に基づいて、前記基板と前記マスクとを相対的に位置合わせをする位置合わせ工程と、
前記位置合わせ工程の後、前記基板を前記基板保持部から前記マスク側ゴム部材上に載置し、前記マスクを前記基板に密着させる密着工程とを有するアライメント方法。
The substrate is transferred from the substrate holding portion onto the mask-side rubber member of the mask holder, and after the substrate is disposed on the mask disposed on the mask holder, the mask is brought into close contact with the substrate, and the mask and the substrate A temporary contact process for obtaining a positional deviation amount with
An alignment step of transferring the substrate from the mask-side rubber member to the substrate holding portion and relatively aligning the substrate and the mask based on the amount of positional deviation obtained in the temporary contact step. When,
An alignment method comprising, after the alignment step, an adhesion step of placing the substrate on the mask side rubber member from the substrate holding portion and closely attaching the mask to the substrate.
前記仮密着工程と前記密着工程は、前記基板の前記マスク側ゴム部材に載置される面とは反対側の面に磁石を有する基板密着部材を接触させ、前記基板密着部材により発生する磁力により、前記マスクを前記基板に密着させる請求項1記載のアライメント方法。In the temporary contact step and the close contact step, a substrate contact member having a magnet is brought into contact with a surface of the substrate opposite to a surface placed on the mask side rubber member, and a magnetic force generated by the substrate contact member is used. The alignment method according to claim 1 , wherein the mask is brought into close contact with the substrate.
JP2002305392A 2002-10-21 2002-10-21 Alignment method Expired - Fee Related JP4346885B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002305392A JP4346885B2 (en) 2002-10-21 2002-10-21 Alignment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002305392A JP4346885B2 (en) 2002-10-21 2002-10-21 Alignment method

Publications (2)

Publication Number Publication Date
JP2004137584A JP2004137584A (en) 2004-05-13
JP4346885B2 true JP4346885B2 (en) 2009-10-21

Family

ID=32452507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002305392A Expired - Fee Related JP4346885B2 (en) 2002-10-21 2002-10-21 Alignment method

Country Status (1)

Country Link
JP (1) JP4346885B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4494832B2 (en) * 2004-03-11 2010-06-30 株式会社アルバック Alignment apparatus and film forming apparatus
JP4641390B2 (en) * 2004-06-07 2011-03-02 キヤノン株式会社 Vacuum deposition equipment
WO2008139876A1 (en) * 2007-05-10 2008-11-20 Ulvac, Inc. Positioning device and film-forming device

Also Published As

Publication number Publication date
JP2004137584A (en) 2004-05-13

Similar Documents

Publication Publication Date Title
JP5192492B2 (en) Vacuum processing apparatus, method for manufacturing image display apparatus using the vacuum processing apparatus, and electronic device manufactured by the vacuum processing apparatus
JP4375232B2 (en) Mask deposition method
JP4781893B2 (en) Magnetic mask holder
CN109385601B (en) Mask manufacturing apparatus and mask manufacturing method
JP4184771B2 (en) Alignment equipment, film deposition equipment
WO2010106958A1 (en) Positioning method and vapor deposition method
KR100800237B1 (en) Process and Device for Positioning the Mask
JP4773834B2 (en) Mask film forming method and mask film forming apparatus
WO2005087969A1 (en) Alignment equipment and film forming equipment
JP2017155338A (en) Vapor deposition apparatus for organic light-emitting element
JP7120545B2 (en) Film forming apparatus, film forming method, and method for manufacturing organic EL display device using the same
JP2019102801A (en) Film forming apparatus and method of manufacturing organic EL display device using the same
JP7113861B2 (en) Mask mounting device, film forming device, mask mounting method, film forming method, electronic device manufacturing method
JP4346885B2 (en) Alignment method
JP4596794B2 (en) Alignment equipment for vacuum deposition
JP4478472B2 (en) Organic thin film deposition method
KR20190101440A (en) Sputtering device
KR101853889B1 (en) Method for aligning substrate using electrostatic chuck
JP3976546B2 (en) Thin film forming equipment
JPH1119838A (en) Vacuum sucker device
KR101775135B1 (en) eletectrostatic chuck
JP2007119895A (en) Vapor deposition device
WO2024062801A1 (en) Film forming apparatus and film forming method
WO2024062802A1 (en) Mask, film forming method, and film forming apparatus
JP2003242637A (en) Magnetic transfer apparatus

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050622

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20071121

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080603

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20080723

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080723

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20080724

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080724

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090714

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090715

R150 Certificate of patent or registration of utility model

Ref document number: 4346885

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120724

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130724

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees