JP6857675B2 - 半導体装置の製造方法、基板処理装置およびプログラム - Google Patents
半導体装置の製造方法、基板処理装置およびプログラム Download PDFInfo
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- JP6857675B2 JP6857675B2 JP2019040370A JP2019040370A JP6857675B2 JP 6857675 B2 JP6857675 B2 JP 6857675B2 JP 2019040370 A JP2019040370 A JP 2019040370A JP 2019040370 A JP2019040370 A JP 2019040370A JP 6857675 B2 JP6857675 B2 JP 6857675B2
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- 238000012545 processing Methods 0.000 title claims description 170
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- 230000003028 elevating effect Effects 0.000 description 14
- 239000010936 titanium Substances 0.000 description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 6
- 229910052719 titanium Inorganic materials 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 5
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- 238000009529 body temperature measurement Methods 0.000 description 4
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000012636 effector Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000012495 reaction gas Substances 0.000 description 2
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- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
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- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
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- H01L21/02186—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal the material containing titanium, e.g. TiO2
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Description
図1から図7を用いて、基板処理装置の構成を説明する。
図1、図2は基板処理装置の概略を説明する説明図であり、図3から図6は基板処理装置が有するプロセスモジュールを説明する説明図である。図7は基板処理装置のコントローラを説明する説明図である。以下に、各構成を具体的に説明する。
基板処理装置200の手前には、IOステージ(ロードポート)110が設置されている。IOステージ110上には複数のポッド111が搭載されている。ポッド111はシリコン(Si)基板などの基板100を搬送するキャリアとして用いられる。
ロードロック室130は大気搬送室120に隣接する。ロードロック室130を構成する筐体131が有する面のうち、大気搬送室120と異なる面には、後述する真空搬送室140が配置される。
基板処理装置200は、負圧下で基板100が搬送される搬送空間となる搬送室としての真空搬送室(トランスファモジュール)140を備えている。真空搬送室140を構成する筐体141は平面視が五角形に形成され、五角形の各辺には、ロードロック室130及び基板100を処理するモジュール(以下PMと呼ぶ。)であるPM1〜PM4が連結されている。真空搬送室140の略中央部には、負圧下で基板100を移載(搬送)する搬送部としての搬送ロボット170がフランジ144を基部として設置されている。
次に、モジュール(PM)についてリアクタ(RC)を中心に説明する。なお、PM1〜PM4はそれぞれ同様の構成であるため、ここではPMとして説明する。また、RC1〜RC8もそれぞれ同様の構成であるため、ここではRCとして説明する。
次に、図4を用いて第一ガス供給部240を説明する。第一ガス供給部240は第一ガス供給管241を有する。第一ガス供給管241は、図3のAに対応するものであり、処理室201にガスを供給する構成である。
次に、図5を用いて第二ガス供給部250を説明する。第二ガス供給部250は第二ガス供給管251を有する。第二ガス供給管251は、図3のBに対応するものであり、処理室201にガスを供給する構成である。
次に、図6を用いて第三ガス供給部260を説明する。第三ガス供給部260は第三ガス供給管261を有する。第三ガス供給管261は、図3のCに対応するものであり、処理室201にガスを供給する構成である。
続いて、図3で排気部271を説明する。
処理空間205には、排気管272が連通される。排気管272は、処理空間205に連通するよう、上部容器202aに接続される。排気管272には、処理空間205内を所定の圧力に制御する圧力制御器であるAPC(AutoPressure Controller)273が設けられる。APC273は開度調整可能な弁体(図示せず)を有し、コントローラ400からの指示に応じて排気管272のコンダクタンスを調整する。また、排気管272においてAPC273の上流側にはバルブ274が設けられる。排気管272とバルブ274、APC273をまとめて排気部と呼ぶ。
次に図7を用いてコントローラ400を説明する。
基板処理装置200は、各部の動作を制御するコントローラ400を有している。
次に図8を用いて、半導体製造工程の一工程として、上述した構成の基板処理装置200を用いて基板100上に膜を形成する工程について説明する。なお、以下の説明において、基板処理装置を構成する各部の動作はコントローラ400により制御される。
基板搬送工程を説明する。なお、図8では本工程を省略している。
基板搬送工程では、ポッド111から基板100を搬出する。ここでは、例えば任意のm枚目の基板100をポッド111から搬出する。基板100は大気搬送室120を介してロードドック室130の載置面135上に載置される。
RC基板搬入工程S102を説明する。ここでは、真空搬送室140に待機された基板100をRCに搬入する。
基板処理ポジション移動工程S104を説明する。
リフトピン207上に基板100が載置されたら、基板載置台212を上昇させ、基板載置面211上に基板100を載置し、更に図1のように、基板処理ポジションまで上昇させる。
続いて、成膜工程S106を説明する。
基板載置台212が基板処理ポジションに移動したら、排気管272を介して処理室201から雰囲気を排気して、処理室201内の圧力を調整する。
続いて、搬送ポジション移動工程S108を説明する。
所望の膜厚の膜が形成されたら、基板載置台212を下降させて、図3に記載の搬送ポジションP0に移動する。したがって、基板100は搬送室206に待機される。
続いて温度測定工程S110を説明する。
温度測定工程S110では、温度測定器235が処理室201の温度を測定する。例えば、処理室201の温度としてバッファ構造230の温度を計測する。具体的には温度測定器235が蓋231の温度を測定する。温度測定部237は温度測定器235が測定した温度データを、温度記憶部411に記録する。
続いて基板搬出工程S112を説明する。
基板100を搬送ポジションP0に移動したら、ゲートバルブ149を開として、搬送室206から真空搬送室140に基板100を搬出する。
続いて判定S114を説明する。
成膜工程S106および温度測定工程S110が終了したら、判定S114に移行する。ここでは、所定枚数の基板100を処理した後に、次に処理する基板の有無を判断する。他のRCで処理した基板を含め、一ロット中の全ての基板であるn枚の基板を処理したと判断したら、処理を終了する。もしくは、n枚の基板を処理していなくても、次に処理する基板100が無ければ処理を終了する。次に処理する基板があれば次基板処理設定工程S116に移行する。
続いて次基板処理設定工程S116を説明する。
ここでは、次に処理する基板100に対応できるよう基板処理装置200を設定する。例えば第m基板を処理していた場合、次に処理する基板100を処理可能なよう、設定する。設定の一例としては、次に処理する基板100に大気搬送ロボット122がアクセス可能なよう切り替える。
判定S118を説明する。ここでは、次に処理する基板100を基板載置台212に載置する前に、処理室201での処理を所定時間待機するかどうかを判断する。具体的には、処理室201にガスを供給せずに、基板載置台212を搬送ポジションP0にて所定時間待機させるかどうかを判断する。判断の基準は後述する。
成膜工程S106の間、ヒータ213は基板100だけでなく処理室201も加熱してしまう。そのため、成膜工程S106の間、処理室201には熱が蓄積され、処理室201の温度は成膜工程S106の開始時に比べて高くなる。
続いて待機工程S120を説明する。判定S118でYesと判断されたら、待機工程S120に移動する。待機工程S120では、ゲートバルブ149を閉とした状態で、成膜工程S106で実施していたガスの供給や加熱等の処理を停止した状態とする。更には、基板100が搬出され、基板載置台212が搬送ポジションP0に維持された状態である。すなわち、ヒータ213は処理室201から退避された状態である。このようにして、各構成は所定時間待機される。
続いて次基板処理移行工程S122を説明する。
待機工程S120が終了したら、もしくは判定S116でNoと判断されたら、次基板処理移行工程S122に移動する。
以上に、実施形態を具体的に説明したが、本技術は上述の各実施形態に限定されるものではなく、その要旨を逸脱しない範囲で種々変更可能である。
Claims (9)
- n枚の基板を1ロットとして処理する半導体装置の製造方法であって、
m枚目(m<n)の基板を処理室に搬入する工程と、
前記処理室にて前記m枚目の基板を加熱してグレインを有する膜を形成する工程と、
前記m枚目の基板を前記処理室から搬出する工程と、
前記搬出する工程の後、前記グレインのグレインサイズが所定サイズ以上となる基準温度以下となるよう、前記処理室に前記基板が無い状態で、前記処理室での処理を所定時間待機する工程と、
前記待機する工程の後、前記処理室に次に処理する前記基板を搬入する工程と、
前記処理室にて前記次の基板を加熱して前記グレインを有する膜を形成する工程と、
を有する半導体装置の製造方法。 - 前記膜を形成する工程では、前記基板は基板載置台が有する加熱部によって加熱され、
前記待機する工程では、前記基板載置台は前記処理室から退避させられる請求項1に記載の半導体装置の製造方法。 - 前記膜を形成する工程を所定枚数分繰り返したら、前記待機する工程に移行する請求項1または請求項2に記載の半導体装置の製造方法。
- 前記処理室の温度が基準温度を超えたら前記待機する工程に移行する請求項1または請求項2に記載の半導体装置の製造方法。
- 前記待機する工程の間前記処理室を冷却する請求項1から請求項4のうち、いずれか一項に記載の半導体装置の製造方法。
- 前記待機する工程の間前記処理室に熱伝導ガスを供給する請求項5に記載の半導体装置の製造方法。
- 前記処理室は複数設けられ、
前記待機する工程への移行は、前記処理室のそれぞれで判断される請求項1から請求項6のうち、いずれか一項に記載の半導体装置の製造方法。 - n枚の基板を1ロットとして処理する基板処理装置であって、
m枚目(m<n)の前記基板が搬入される処理室と、
前記基板を加熱する加熱部と、
前記処理室にガスを供給するガス供給部と、
前記処理室にて前記m枚目の基板を加熱してグレインを有する膜を形成した後、前記m枚目の前記基板を前記処理室から搬出し、
その後、前記グレインのグレインサイズが所定サイズ以上となる基準温度以下となるよう、前記処理室に前記基板が無い状態で、前記処理室での処理を所定時間待機し、
前記所定時間経過後、前記処理室に次に処理する前記基板を搬入し、前記基板を加熱して前記グレインを有する膜を形成するよう制御する制御部と、
を有する基板処理装置。 - n枚の基板を1ロットとして、コンピュータによって基板処理装置に実行させるプログラムであって、
m枚目(m<n)の前記基板を処理室に搬入する手順と、
前記処理室にて前記m枚目の基板を加熱してグレインを有する膜を形成する手順と、
前記m枚目の基板を前記処理室から搬出する手順と、
前記搬出する工程の後、前記グレインのグレインサイズが所定サイズ以上となる基準温度以下となるよう、前記処理室に前記基板が無い状態で、前記処理室での処理を所定時間待機する手順と、
前記待機する工程の後、前記処理室に次に処理する前記基板を搬入する手順と、
前記処理室にて前記次の基板を加熱して前記グレインを有する膜を形成する手順と、
をコンピュータによって基板処理装置に実行させるプログラム。
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