JP2019220681A - 基板処理方法および基板処理装置 - Google Patents
基板処理方法および基板処理装置 Download PDFInfo
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- JP2019220681A JP2019220681A JP2019090801A JP2019090801A JP2019220681A JP 2019220681 A JP2019220681 A JP 2019220681A JP 2019090801 A JP2019090801 A JP 2019090801A JP 2019090801 A JP2019090801 A JP 2019090801A JP 2019220681 A JP2019220681 A JP 2019220681A
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Abstract
Description
図1は、一実施形態に係る処理装置10の概略構成を示す図である。処理装置10は、一実施形態に係る基板処理装置の一例である。図1に示す処理装置10は、一実施形態に係る方法を実現するために使用できる。図1に示す処理装置10は、いわゆる誘導結合型プラズマ(Inductively-coupled plasma:ICP)装置であり、誘導結合型プラズマを生成するためのプラズマ源を有する。ただし、一実施形態に係る基板処理装置は、他の手法で生成されるプラズマを利用してもよい。たとえば、一実施形態に係る基板処理装置は、容量結合型プラズマ(CCP)、ECRプラズマ(electron-cyclotron-resonance plasma)、ヘリコン波励起プラズマ(HWP)、または、表面波プラズマ(SWP)等を利用する装置であってもよい。
図2は、一実施形態に係る処理方法の一例を示すフローチャートである。一実施形態に係る処理装置10は、半導体基板等のワークピースWを処理する。
ステップ102およびステップ103は、基板をチャンバ12から取り出すことなく実行する。つまり、第1処理および第2処理はチャンバ12内の真空状態を壊すことなく、in situで実行する。一実施形態に係る装置たとえば処理装置10は、気体供給部44を備え、気体供給部44はチャンバ12内に種々のガスを供給できる。また、一実施形態に係る装置は、第1処理および第2処理をチャンバ12内の真空状態を壊すことなく実行できる。また、一実施形態に係る装置は、排気路、排気口12e、排気装置3等の排気機構を備え、異なる種類のガスがチャンバ12内で混ざりあわないよう、パージ処理を実行できる。このため、一実施形態の装置は、ステップ102およびステップ103をin situで、または真空状態を壊すことなく実行できる。
また、一実施形態に係る装置は、プロセスごとにプラズマ生成の態様を変更してもよい。たとえば、コントローラ80は、アンテナ50と下部電極18とを制御して、第1処理の間は下部電極18のみに電圧が印加され、第2処理の間はアンテナ50のみに電圧が印加されるようにしてもよい。
一実施形態に係る装置においては、第1処理および第2処理に加えて、他の処理を第3処理としてin situで実行してもよい。たとえば、一実施形態に係る装置はさらにエッチング処理を実行することで、スループットをさらに向上させることができる。エッチング処理は原子層エッチング(ALE)処理であってもよい。
12 チャンバ
12c 空間
12e 排気口
12i 吸気口
12p 開口
13 支持機構
14 ステージ
16 静電チャック
18 下部電極
18a 第1プレート
18b 第2プレート
22 直流電源
23 スイッチ
24 流路
26a,26b パイプ
28 気体供給ライン
30 RF電源
32 整合器
34 シールド
36 パイプ
38 排気装置
40 バッフル板
42 ウィンドウ
44 気体供給部
44a ガス源
44b フローコントローラ
44c バルブ
46 パイプ
48 ゲートバルブ
50 アンテナ
52A 内側アンテナ素子
52B 外側アンテナ素子
54 クランプ
60 シールド
62A 内側シールド壁
62B 外側シールド壁
64A 内側シールド板
64B 外側シールド板
68A,68B アクチュエータ
70A,70B RF電源
80 コントローラ
FR フォーカスリング
HT ヒータ
HP ヒータ電源
W ワークピース
Claims (16)
- チャンバを備える処理装置と、
メモリと、当該メモリに接続されたプロセッサとを備えるコントローラと、
を備える基板処理装置であって、
前記メモリは前記プロセッサを制御して前記処理装置による処理を制御するための、コンピュータによって実行可能な命令を記憶し、当該処理は、
化学蒸着(CVD)により、前記チャンバ内の基板の第1領域内に第1膜を形成する第1処理と、
原子層堆積(ALD)により、前記チャンバ内の前記基板の第2領域内に第2膜を形成する第2処理と、
を含み、
前記第1処理および前記第2処理を、前記基板を前記チャンバから外に移動させることなく実行する、基板処理装置。 - 前記コントローラにより制御されるアンテナと、
前記アンテナに対向して配置され、前記基板を上に保持するよう構成され、前記コントローラにより制御される下部電極と、
をさらに備え、前記処理はさらに、
前記化学蒸着中に前記下部電極に電圧印加し、
前記原子層堆積の改質ステップ中に前記アンテナに電圧印加することを含む、請求項1に記載の基板処理装置。 - 前記チャンバ上に配置され、前記コントローラにより制御されるアンテナと、
前記アンテナに対向して配置され、前記基板を上に保持するよう構成され、前記コントローラにより制御される下部電極と、
をさらに備え、前記処理はさらに、
前記化学蒸着中に前記アンテナに電圧印加せずに、前記下部電極に電圧印加し、
前記原子層堆積の改質ステップ中に前記下部電極に電圧印加せず、前記アンテナに電圧印加することを含む、請求項1に記載の基板処理装置。 - 前記第1処理は、前記基板の親水性表面の第1領域上に疎水性表面として前記第1膜を形成し、
前記第2処理は、前記基板の前記疎水性表面の前記第2領域上に、ヒドロキシ基と反応する前駆体を吸着させることにより前記第2膜を形成する、請求項1〜3のいずれか1項に記載の基板処理装置。 - 前記第2処理は、前記基板から前記第1膜の少なくとも一部を除去する、請求項1〜4のいずれか1項に記載の基板処理装置。
- 前記第1処理は、フルオロカーボンプラズマにより前記第1膜を堆積する、請求項1〜5のいずれか1項に記載の基板処理装置。
- 前記第1処理は、前記下部電極に印加される電圧を制御することにより、異方性CVDおよび等方性CVDのいずれか一方を実行する、請求項2に記載の基板処理装置。
- 前記第1処理は、前記基板の凹凸の頂部および底部に前記第1膜を形成し、
前記第2処理は、前記基板の凹凸の側壁に前記第2膜を形成する、請求項1〜7のいずれか1項に記載の基板処理装置。 - 前記基板は、SiO2、SiN、SiおよびGeのうち少なくともいずれか一つを含有し、
前記第2処理は、前記第2膜としてシリコン含有膜を形成する、請求項1〜8のいずれか1項に記載の基板処理装置。 - 前記第1処理および前記第2処理は順に繰り返し実行される、請求項1〜9のいずれか1項に記載の基板処理装置。
- 前記第1処理および前記第2処理は、誘導結合型プラズマまたは容量結合型プラズマを使用して実行される、請求項1〜10のいずれか1項に記載の基板処理装置。
- チャンバを有する処理装置と、
メモリと、当該メモリに接続されるプロセッサと、を有するコントローラと、を備え、前記メモリは前記プロセッサを制御して処理を制御させるためのコンピュータにより実行可能な命令を記憶し、当該処理は、
化学蒸着により、前記チャンバ内の基板の第1領域内に第1膜を形成する第1処理と、
原子層堆積により、前記チャンバ内の前記基板の第2領域内に第2膜を形成する第2処理と、
前記基板をエッチングする第3処理と、
を含み、
前記第1処理、前記第2処理および前記第3処理を、前記チャンバの外に前記基板を移動させずに実行する、基板処理装置。 - 前記第3処理は、原子層エッチングを含み、
前記第3処理はさらに、
NプラズマおよびHプラズマの一方により前記基板の表面を改質し、
前記チャンバをパージし、
前記NプラズマおよびHプラズマの一方により改質された前記表面を、ハロゲンガスにより除去する、ことを含む、請求項12に記載の基板処理装置。 - 化学蒸着により、処理装置のチャンバ内の基板の第1領域内に第1膜を形成する第1処理と、
原子層堆積により、前記チャンバ内の前記基板の第2領域内に第2膜を形成する第2処理と、
を含み、
前記第1処理および前記第2処理は、前記チャンバの外に前記基板を移動させずに実行する、基板処理方法。 - 前記基板をエッチングする第3処理をさらに含み、
前記第1処理、前記第2処理および前記第3処理は、前記チャンバの外に前記基板を移動させずに実行する、請求項14に記載の基板処理方法。 - 前記第3処理は、原子層エッチングを含み、
前記第3処理はさらに、
NプラズマおよびHプラズマの一方により、前記基板の表面を改質し、
前記チャンバをパージし、
前記NプラズマおよびHプラズマの一方により改質された前記表面を、ハロゲンガスにより除去することを含む、請求項15に記載の基板処理方法。
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