JP6987821B2 - 基板処理装置、半導体装置の製造方法およびプログラム - Google Patents
基板処理装置、半導体装置の製造方法およびプログラム Download PDFInfo
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- JP6987821B2 JP6987821B2 JP2019175993A JP2019175993A JP6987821B2 JP 6987821 B2 JP6987821 B2 JP 6987821B2 JP 2019175993 A JP2019175993 A JP 2019175993A JP 2019175993 A JP2019175993 A JP 2019175993A JP 6987821 B2 JP6987821 B2 JP 6987821B2
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45544—Atomic layer deposition [ALD] characterized by the apparatus
- C23C16/45548—Atomic layer deposition [ALD] characterized by the apparatus having arrangements for gas injection at different locations of the reactor for each ALD half-reaction
- C23C16/45551—Atomic layer deposition [ALD] characterized by the apparatus having arrangements for gas injection at different locations of the reactor for each ALD half-reaction for relative movement of the substrate and the gas injectors or half-reaction reactor compartments
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/3244—Gas supply means
- H01J37/32449—Gas control, e.g. control of the gas flow
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- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68764—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by a movable susceptor, stage or support, others than those only rotating on their own vertical axis, e.g. susceptors on a rotating caroussel
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/34—Nitrides
- C23C16/345—Silicon nitride
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/4412—Details relating to the exhausts, e.g. pumps, filters, scrubbers, particle traps
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C16/45563—Gas nozzles
- C23C16/45565—Shower nozzles
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45563—Gas nozzles
- C23C16/45578—Elongated nozzles, tubes with holes
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- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—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
- H01L21/02112—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
- H01L21/02123—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 silicon
- H01L21/0217—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 silicon the material being a silicon nitride not containing oxygen, e.g. SixNy or SixByNz
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- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
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- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
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- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68771—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by supporting more than one semiconductor substrate
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/458—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for supporting substrates in the reaction chamber
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- C23C16/4583—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally
- C23C16/4584—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally the substrate being rotated
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- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
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Description
第1実施形態を、図面を参照しながら説明する。
本実施形態に係る基板処理装置の構成について、主に図1、図2を用いて説明する。図1は、本実施形態に係る基板処理装置200の横断面概略図である。図2は、本実施形態に係る基板処理装置200の縦断面概略図であり、図1に示すチャンバのα−α’線断面図である。なお、α−α’線は、αからチャンバ302の中心を通ってα’に向かう線である。
図1に記載のように、チャンバ302はガス供給構造410を有する。ガス供給構造410は基板載置プレート317の上方に配される。更に、チャンバ302はノズル355、365、366を有する。図1のAは図3(a)のAと接続される。すなわち、ガス供給構造410は供給管241に接続される。図1のBは図3(b)のBと接続される。すなわち、ノズル355は供給管251に接続される。図1のCは図3(c)のCと接続される。すなわち、ノズル365、366はそれぞれ供給管261に接続される。
第2ガス供給管251には、上流方向から順に、第2ガス供給源252、流量制御器であるMFC253、バルブ254が設けられる。
パージガス供給管261には、上流方向から順に、パージガス供給源262、流量制御器(流量制御部)であるMFC263、バルブ264が設けられる。
チャンバ302にはガス排気構造420、排気口392が設けられる。ガス排気構造420は基板載置プレート317の上方に配される。ガス排気構造420と連通するよう、排気管334aが設けられる。排気管334aには、開閉弁としてのバルブ334d、圧力調整器(圧力調整部)としてのAPC(Auto Pressure Controller)バルブ334cを介して、真空排気装置としての真空ポンプ334bが接続されており、処理室301内の圧力が所定の圧力(真空度)となるよう真空排気し得るように構成されている。
基板処理装置200は、基板処理装置200の各部の動作を制御するコントローラ400を有している。コントローラ400は、演算部(CPU)401、一時記憶部402、記憶部403、送受信部404を少なくとも有する。コントローラ400は、送受信部404を介して基板処理装置200の各構成に接続され、上位コントローラや使用者の指示に応じて記憶部403からプログラムやレシピを呼び出し、その内容に応じて各構成の動作を制御する。なお、コントローラ400は、専用のコンピュータとして構成してもよいし、汎用のコンピュータとして構成してもよい。例えば、上述のプログラムを格納した外部記憶装置(例えば、磁気テープ、フレキシブルディスクやハードディスク等の磁気ディスク、CDやDVD等の光ディスク、MO等の光磁気ディスク、USBメモリ(USB Flash Drive)やメモリカード等の半導体メモリ)412を用意し、外部記憶装置412を用いて汎用のコンピュータにプログラムをインストールすることにより、本実施形態に係るコントローラ400を構成できる。また、コンピュータにプログラムを供給するための手段は、外部記憶装置412を介して供給する場合に限らない。例えば、インターネットや専用回線等の通信手段を用いても良いし、上位装置420から送受信部411を介して情報を受信し、外部記憶装置412を介さずにプログラムを供給するようにしてもよい。また、キーボードやタッチパネル等の入出力装置413を用いて、コントローラ400に指示をしても良い。
次に、図7、図8を用い、基板処理工程について説明する。図7は、本実施形態に係る基板処理工程を示すフロー図である。図8は成膜工程S330の詳細を説明するフロー図である。以下の説明において、基板処理装置200の構成各部の動作は、コントローラ400により制御される。
ゲートバルブ305と対向する位置に搬出したい基板100を移動するよう基板載置プレートを回転させる。その後、基板搬入時と逆の方法で基板を搬出する。これらの動作を繰り返し、すべての基板100を搬出する。
続いて、第2実施形態を説明する。第2実施形態は、第1実施形態と比べて処理領域306aのガス供給構造、ガス排気構造が異なる。他は同様の構成である。以下に、相違点を中心に説明する。
ガス排気構造440は、排気バッファ構造441とそれに接続される排気管442を有する。排気バッファ構造441は、基板載置プレート317の径方向に複数設けられる。図12においては、基板載置プレート317の中心から、排気バッファ構造441a、441b、441cの順に設けられている。
続いて図14、図15、図16を用いて第3実施形態を説明する。
第3実施形態は、第2実施形態の装置形態における供給バッファ構造が異なる。他は同様の構造である。以下、相違点を中心に説明する。図14において、矢印のC方向は基板載置プレート317の中心方向を示し、Eは外周方向を示す。また、図14における奥側は回転方向上流であり、手前が回転方向下流である。
以上、本開示の第1実施形態から第3実施形態を具体的に説明したが、本開示が上述の各実施形態に限定されることはなく、その要旨を逸脱しない範囲で種々変更することが可能である。
101 ピラー
102 溝
200 基板処理装置
240 ガス供給部
301 処理室
302 チャンバ
317 基板載置プレート
324 回転部
334 ガス排気部
410 ガス供給構造
420 ガス排気構造
Claims (9)
- 円周状に基板を複数配置可能な基板載置プレートと、
前記基板載置プレートを回転させる回転部と、
前記基板載置プレートの上方であって、前記基板載置プレートの中心から外周にかけて配されるガス供給構造と、
前記ガス供給構造を含み、前記ガス供給構造から供給されるガス供給量を制御するガス供給部と、
前記基板載置プレートの上方であって、前記ガス供給構造の回転方向下流に設けられるガス排気構造と、
前記ガス排気構造を含み、前記ガス排気構造から排気されるガス排気量を制御するガス排気部と、
前記ガス供給部と前記ガス排気部とを備え、前記基板へのガス主成分量を制御するガス主成分量制御部とを有し、
前記ガス主成分量制御部は、前記中心から前記外周にかけて前記基板に供給するガスの主成分の量を調整可能とし、
前記ガス供給部は、前記基板載置プレートの中心部から外周部にかけて一定の供給量でガスを供給し、
前記基板の中央領域が通過する箇所では、前記ガス供給構造と前記ガス排気構造との間を第1の距離とし、
前記基板の側方領域が通過する箇所では、前記ガス供給構造と前記ガス排気構造との間を、前記第1の距離よりも短い第2の距離となるよう構成される基板処理装置。 - 前記基板が、面内に複数の溝を構成するピラーが形成された状態である場合、
前記ガス主成分量制御部は、前記基板のうち、前記基板の中央領域に供給するガスの暴露量を、前記基板の側方領域に供給するガスの暴露量よりも大きくする請求項1に記載の基板処理装置。 - 前記第1の距離および第2の距離は、前記中央領域および前記側方領域に形成される溝の表面積に応じて設定される請求項1に記載の基板処理装置。
- 前記ガス主成分量制御部は、前記基板載置プレートの中心から外周にかけて、ガスの供給量を多くするよう構成される請求項1から請求項3のうち、いずれか一項に記載の基板処理装置。
- 前記ガス供給構造には前記基板載置プレートの中心から外周にかけてガス供給孔が設けられ、前記ガス供給孔は前記基板の表面に対して傾斜を有するよう構成される請求項1から請求項4のうち、いずれか一項に記載の基板処理装置。
- 前記ガス供給孔は複数設けられ、前記傾斜は、前記基板載置プレートの中心から外周にかけて、徐々に前記基板の表面に向かうよう構成される請求項5に記載の基板処理装置。
- 前記ガス供給孔は複数設けられ、それぞれの前記ガス供給孔は、前記基板載置プレートの中心から外周にかけて、徐々に基板表面に近づくよう構成される請求項5または請求項6に記載の基板処理装置。
- 複数の基板を基板載置プレートに円周状に配置する工程と、
前記基板載置プレートの回転開始と並行して、
前記基板載置プレートの上方であって、前記基板載置プレートの中心から外周にかけて配されるガス供給構造と、前記ガス供給構造を含み、前記ガス供給構造から供給されるガス供給量を制御するガス供給部と、前記基板載置プレートの上方であって、前記ガス供給構造の回転方向下流に設けられるガス排気構造と、前記ガス排気構造を含み、前記ガス排気構造から排気されるガス排気量を制御するガス排気部とを備え、前記基板の中央領域が通過する箇所では、前記ガス供給構造と前記ガス排気構造との間を第1の距離とし、前記基板の側方領域が通過する箇所では、前記ガス供給構造と前記ガス排気構造との間を、前記第1の距離よりも短い第2の距離となる構成で、前記基板へのガス主成分量を制御するガス主成分量制御部が、前記中心から前記外周にかけて前記基板に供給するガスの主成分の量を調整し、前記基板載置プレートに向けてのガス供給を開始する工程と、
前記ガス供給部が、前記基板載置プレートの中心部から外周部にかけて一定の供給量でガスを供給して前記基板を処理する工程と
を有する半導体装置の製造方法。 - 複数の基板を基板載置プレートに円周状に配置する手順と、
前記基板載置プレートの回転開始と並行して、
前記基板載置プレートの上方であって、前記基板載置プレートの中心から外周にかけて配されるガス供給構造と、前記ガス供給構造を含み、前記ガス供給構造から供給されるガス供給量を制御するガス供給部と、前記基板載置プレートの上方であって、前記ガス供給構造の回転方向下流に設けられるガス排気構造と、前記ガス排気構造を含み、前記ガス排気構造から排気されるガス排気量を制御するガス排気部とを備え、前記基板の中央領域が通過する箇所では、前記ガス供給構造と前記ガス排気構造との間を第1の距離とし、前記基板の側方領域が通過する箇所では、前記ガス供給構造と前記ガス排気構造との間を、前記第1の距離よりも短い第2の距離となる構成で、前記基板へのガス主成分量を制御するガス主成分量制御部が、前記中心から前記外周にかけて前記基板に供給するガスの主成分の量を調整した状態で前記基板載置プレートに向けてのガス供給を開始する手順と、
前記ガス供給部が前記基板載置プレートの中心部から外周部にかけて一定の供給量でガスを供給して前記基板を処理する手順と
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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