JP7341100B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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Description
図1は、本開示の一実施形態における製造システム10の一例を示すシステム構成図である。製造システム10は、積層装置200、加熱装置300-1、プラズマ処理装置400、および加熱装置300-2を備える。製造システム10は、マルチチャンバータイプの真空処理システムである。製造システム10は、積層装置200、加熱装置300-1、プラズマ処理装置400、および加熱装置300-2を用いて、半導体装置に用いられる素子が形成される基板Wにエアギャップを形成する。加熱装置300-1および加熱装置300-2は、同様の構成である。なお、以下では、加熱装置300-1および加熱装置300-2のそれぞれを区別することなく総称する場合に加熱装置300と記載する。
図2は、本開示の一実施形態における積層装置200の一例を示す概略図である。積層装置200は、容器201、排気装置202、シャワーヘッド206、および載置台207を有する。本実施形態において、積層装置200は、例えばCVD(Chemical Vapor Deposition)装置である。
図3は、本開示の一実施形態における加熱装置300の一例を示す概略図である。加熱装置300は、容器301、排気管302、供給管303、載置台304、ランプハウス305、および赤外線ランプ306を有する。
図4は、本開示の一実施形態におけるプラズマ処理装置400の一例を示す概略図である。プラズマ処理装置400は、処理容器401およびマイクロ波出力装置404を備える。
図5は、半導体装置の製造方法の一例を示すフローチャートである。搬送機構106によって、例えば図6に示されるような、異なる幅の凹部61および凹部62が形成された基板Wが積層装置200内に搬入されることにより、図5に例示された処理が開始される。図6の例では、凹部62の幅W2は、凹部61の幅W1よりも広い。凹部61は、第1の凹部の一例であり、凹部62は、第2の凹部の一例である。
図12は、有機材料63を基板Wに積層させる際の温度、圧力、およびD/R(デポジションレート)の関係の一例を示す図である。有機材料63を基板W上に積層させる場合、例えば図12に示されるように、基板Wの温度が高くなると、有機材料63のD/Rは小さくなる傾向がある。1[nm]未満のD/Rでは、測定誤差も含めると、ほとんど成膜されていないとみなせる。そのため、基板Wが収容された容器301内の圧力が0.5[Torr]の場合では、例えば60[℃]~100[℃]の範囲内の温度に基板Wが加熱された状態で有機材料63を積層させることが好ましい。
図13は、基板Wの温度、圧力、およびリセスレートの関係の一例を示す図である。有機材料63が積層された基板Wの温度が高くなると、例えば図13に示されるように、有機材料63の熱分解が進み、有機材料63のリセスレートが大きくなる傾向がある。1[nm]未満のリセスレートでは、測定誤差も含めると、ほとんどリセスされていないとみなせる。そのため、基板Wが収容された容器301内の圧力が10[Torr]の場合では、例えば240[℃]~300[℃]の範囲内の温度に基板Wが加熱された状態で有機材料63をリセスさせることが好ましい。
なお、本願に開示された技術は、上記した実施形態に限定されるものではなく、その要旨の範囲内で数々の変形が可能である。
W2 幅
D 厚さ
W 基板
10 製造システム
100 制御装置
101 真空搬送室
102 ロードロック室
103 大気搬送室
106 搬送機構
108 搬送機構
200 積層装置
300 加熱装置
400 プラズマ処理装置
500 成膜装置
61 凹部
62 凹部
63 有機材料
64 封止膜
65 エアギャップ
Claims (6)
- 第1の凹部と前記第1の凹部よりも幅が広い第2の凹部とが形成された基板が収容された容器内に材料ガスを供給することにより、前記基板上に熱分解可能な有機材料を積層する第1の積層工程と、
前記基板を第1の温度に加熱することにより、前記基板上に積層された前記有機材料を流動化させるリフロー工程と、
前記第2の凹部に積層された前記有機材料を除去するリセス工程と
を含む半導体装置の製造方法。 - 前記第1の凹部に積層された前記有機材料上に封止膜を積層する第2の積層工程と、
前記基板を前記第1の温度よりも高い第2の温度に加熱することにより、前記封止膜の下層の前記有機材料を熱分解させ、前記封止膜の下層の前記有機材料を、前記封止膜を介して脱離させることにより、前記封止膜と前記第1の凹部との間にエアギャップを形成する脱離工程と
をさらに含む請求項1に記載の半導体装置の製造方法。 - 前記第1の積層工程では、前記基板の温度が前記第1の温度よりも低い第3の温度に加熱された状態で、前記基板上に熱分解可能な有機材料が積層される請求項1または2に記載の半導体装置の製造方法。
- 前記リセス工程では、前記基板が第1の温度と同じ温度かそれより高い温度である第4の温度に加熱されることにより、前記第2の凹部に積層された前記有機材料が除去される請求項1から3のいずれか一項に記載の半導体装置の製造方法。
- 前記第1の積層工程において、前記有機材料は、前記第2の凹部の幅の1/4以下の厚さで前記基板上に積層される請求項1から4のいずれか一項に記載の半導体装置の製造方法。
- 前記第1の積層工程、前記リフロー工程、および前記リセス工程は、この順番で複数回繰り返される請求項1から5のいずれか一項に記載の半導体装置の製造方法。
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JP2007035955A (ja) | 2005-07-27 | 2007-02-08 | Toshiba Corp | 半導体装置およびその製造方法 |
JP2009542011A (ja) | 2006-06-22 | 2009-11-26 | アプライド マテリアルズ インコーポレイテッド | ボトムアップギャップ充填のための誘電堆積プロセスとエッチバックプロセス |
JP2015111610A (ja) | 2013-12-06 | 2015-06-18 | メルクパフォーマンスマテリアルズマニュファクチャリング合同会社 | 熱分解可能な充填用組成物、ならびにその組成物を用いて形成された空隙を具備した半導体装置、およびその組成物を用いた半導体装置の製造方法 |
JP2015204389A (ja) | 2014-04-15 | 2015-11-16 | マイクロン テクノロジー, インク. | 半導体装置及びその製造方法 |
JP2019079889A (ja) | 2017-10-23 | 2019-05-23 | 東京エレクトロン株式会社 | 半導体装置の製造方法 |
JP2019207909A (ja) | 2018-05-28 | 2019-12-05 | 東京エレクトロン株式会社 | 半導体装置の製造方法および基板処理装置 |
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US10978300B2 (en) * | 2018-07-11 | 2021-04-13 | Tokyo Electron Limited | Methods to reduce gouging for core removal processes using thermal decomposition materials |
US11264350B2 (en) * | 2020-03-19 | 2022-03-01 | Nanya Technology Corporation | Semiconductor device with composite dielectric structure and method for forming the same |
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007035955A (ja) | 2005-07-27 | 2007-02-08 | Toshiba Corp | 半導体装置およびその製造方法 |
JP2009542011A (ja) | 2006-06-22 | 2009-11-26 | アプライド マテリアルズ インコーポレイテッド | ボトムアップギャップ充填のための誘電堆積プロセスとエッチバックプロセス |
JP2015111610A (ja) | 2013-12-06 | 2015-06-18 | メルクパフォーマンスマテリアルズマニュファクチャリング合同会社 | 熱分解可能な充填用組成物、ならびにその組成物を用いて形成された空隙を具備した半導体装置、およびその組成物を用いた半導体装置の製造方法 |
JP2015204389A (ja) | 2014-04-15 | 2015-11-16 | マイクロン テクノロジー, インク. | 半導体装置及びその製造方法 |
JP2019079889A (ja) | 2017-10-23 | 2019-05-23 | 東京エレクトロン株式会社 | 半導体装置の製造方法 |
JP2019207909A (ja) | 2018-05-28 | 2019-12-05 | 東京エレクトロン株式会社 | 半導体装置の製造方法および基板処理装置 |
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US11843027B2 (en) | 2023-12-12 |
JP2021174915A (ja) | 2021-11-01 |
US20210336000A1 (en) | 2021-10-28 |
KR20210133145A (ko) | 2021-11-05 |
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