JP5690061B2 - マイクロ電子構造体、マルチチップモジュール及びそれを含むメモリカードとシステム並びに集積回路素子の製造方法 - Google Patents
マイクロ電子構造体、マルチチップモジュール及びそれを含むメモリカードとシステム並びに集積回路素子の製造方法 Download PDFInfo
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- JP5690061B2 JP5690061B2 JP2009238665A JP2009238665A JP5690061B2 JP 5690061 B2 JP5690061 B2 JP 5690061B2 JP 2009238665 A JP2009238665 A JP 2009238665A JP 2009238665 A JP2009238665 A JP 2009238665A JP 5690061 B2 JP5690061 B2 JP 5690061B2
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Description
一方、マルチチップモジュールは、半導体チップを積層させることによって、その容量を増大させうる。例えば、マルチチップモジュールは、同種の半導体チップ、または異種の半導体チップを一つのパッケージに形成することにより利用されうる。
また、本発明の他の目的は、同種または異種のマイクロ電子構造体を高密度に積層しうるマルチチップモジュール、及びそれを用いたメモリカードとシステムを提供することである。
また、本発明の他の目的は、前記マイクロ電子構造体を有する半導体素子の経済的な製造方法を提供することである。
本発明の実施形態で使われる用語は、当業者に通常的に知られた意味として理解されうる。例えば、低誘電率層は、酸化物及び窒化物より低い誘電定数を有する絶縁層を指し、高誘電率層は、酸化物及び窒化物より高い誘電定数を有する絶縁層を指すことができる。
図1を参照すると、マイクロ電子構造体、例えば、半導体チップ100は、半導体基板110と半導体基板110上に提供された複数の導電性パッド130とを備えうる。
導電性パッド130は、半導体チップ100の中心付近に配されるように図に示したが、本実施形態の範囲は、これに制限されない。例えば、導電性パッド130は、半導体チップ100のエッジ付近に配されることも可である。また、導電性パッド130の数は、例示的に図示され、実施形態の範囲を制限しない。
例えば、図2及び図3は、図1の導電性パッド130のうちいずれか一つを図示しうる。
これら実施形態で、第1導電性ビア電極150の数及び配置は、例示的に提供された。したがって、一つの導電性パッド130内に三つ以上の第1導電性ビア電極150が配置することも可能である。
第1半導体チップ100a、100b、100cは、図1〜図16の半導体チップを参照しうる。例示的に、図17〜図19に示したように、第1半導体チップ100aの上面は、図2の半導体チップに対応し、第1半導体チップ100bの上面は、図10の半導体チップに対応し、第1半導体チップ100cの上面は、図11の半導体チップに対応し、第1半導体チップ100a、100b、100cの断面は、図14の半導体チップに対応する。
選択的に、モジュール基板210の底面上に少なくとも一つ以上の導電性バンプ220がさらに提供される。導電性バンプ220は、モジュール基板210からの信号を外部装置に伝達させる役割を行う。
図21を参照すると、モジュール基板210上に第1半導体チップ100d、100e、100f及び第2半導体チップ200aが積層される。第2半導体チップ200aは、第1半導体チップ100d、100e、100fの最上部に配置される。選択的に、モールディング部材230は、第1半導体チップ100d、100e、100f、及び第2半導体チップ200aを覆うようにモジュール基板210上に提供されうる。第1半導体チップの数は、例示的に示しており、本実施形態の範囲を制限しない。
図22を参照すると、モジュール基板210上に第1半導体チップ100g、100h、及び第2半導体チップ200bが積層される。第2半導体チップ200bは、第1半導体チップ100g、100h上に配置される。第1半導体チップの数は、例示的に示したもので、本実施形態の範囲を制限しない。さらに、第2半導体チップ200b上に少なくとも一つの第1半導体チップ及び/または少なくとも一つの第2半導体チップ(図示せず)をさらに配置することもできる。
図23を参照すると、メモリカード400の制御器410とメモリ420とは、電気的な信号を交換しうる。例えば、制御器410の命令によって、メモリ420と制御器410とは、データを交換しうる。これにより、メモリカード400は、メモリ420にデータを保存、又はメモリ420からデータを出力しうる。
他の例として、メモリ420は、図1〜図16の半導体チップのうちいずれか一つを含むように提供される。メモリ420と制御器410とは、互いに積層されるか、またはモジュール基板210(図21)の同じ平面上に離隔配置されることもある。
図24を参照すると、プロセッサ510、入/出力装置530、及びメモリ520は、バス540を利用して互いにデータを通信する。プロセッサ510は、プログラムを実行し、システム505を制御する役割を行う。入/出力装置530は、システム505のデータの入力または出力に利用される。システム505は、入/出力装置530を利用して外部装置、例えば、パソコンまたはネットワークと接続され、外部装置とデータを相互交換しうる。
例えば、このようなシステム505は、メモリ520を必要とする多様な電子制御装置を構成でき、例えば、携帯電話、MP3プレイヤ、ナビゲーション、固相ディスク(Solid state Disk:SSD)、または電化製品に利用されうる。
図25を参照すると、半導体基板110上に絶縁層120を形成する。絶縁層120は、適切な絶縁層の蒸着方法、例えば、化学気相蒸着(CVD:Chemical Vapor Deposition)法を利用して形成する。選択的に、絶縁層120は、蒸着工程後に平坦化しうる。平坦化は、化学的機械的研磨(CMP:Chemical Mechanical Polishing)法、またはエッチバックを利用して行える。
例えば、ビアホール135の形成は、レーザドリリング及び/またはドライエッチングを利用しうる。
(100a、100b、100c)、100d、100e、100f、100g、100h 第1半導体チップ
110 半導体基板
120 絶縁層
130、130a、130b、130c、130d、130e、130f、130g、130h 導電性パッド
135、135a、135b、135c ビアホール
140 分離絶縁層
145、145a、145b 連結ホール
150、150a、150a’、150b、150b’、150b”、150c、150c’、150c”、150d、150e、150f、150g、150h 第1導電性ビア電極
155 第1再配線ライン
160、160a、160b、160c、160d、160e、160f、160g、160h 第2導電性ビア電極
165 第2再配線ライン
166、166a、167 連結部
170 導電性バンプ
200a、200b 第2半導体チップ
210 モジュール基板
220 導電性バンプ
230 モールディング部材
240 導電性パッド
400 メモリカード
410 制御器
420、520 メモリ
505 システム
510 プロセッサ
530 入/出力装置
540 バス
1000、1100、1200 マルチチップモジュール
Claims (29)
- 基板と、
前記基板上に提供され、貫通して延長される第1及び第2開口を含む導電性パッドと、
前記導電性パッド上に提供され、前記導電性パッド内の前記第1開口を貫通して前記基板内に延長される第1導電性ビア電極と、
前記導電性パッド上に前記第1導電性ビア電極に隣接するように提供され、前記導電性パッド内の前記第2開口を貫通して前記基板内に延長される第2導電性ビア電極と、
前記第1及び第2開口に対応する夫々の側壁上と前記導電性パッドの表面上とに形成された絶縁層と、を有し、
前記第1導電性ビア電極は、前記絶縁層によって前記導電性パッドから電気的に絶縁されていることを特徴とするマイクロ電子構造体。 - 前記絶縁層は、前記第2開口に隣接した前記導電性パッドの一部分を露出させ、
前記第2導電性ビア電極は、前記導電性パッドの前記露出された部分と電気的に接続されることを特徴とする請求項1に記載のマイクロ電子構造体。 - 前記導電性パッドの前記露出した部分は、平面的に見て正四角形、円形、六角形、又はリング状の形状を有することを特徴とする請求項2に記載のマイクロ電子構造体。
- 前記第2導電性ビア電極は、前記絶縁層によって前記導電性パッドから電気的に絶縁されることを特徴とする請求項1に記載のマイクロ電子構造体。
- 前記導電性パッド上に前記第1及び第2導電性ビア電極に隣接し、前記導電性パッド内の第3開口を貫通して前記基板内に延長される第3導電性ビア電極をさらに有し、
前記第3導電性ビア電極は、前記絶縁層によって前記導電性パッドから電気的に絶縁されることを特徴とする請求項1に記載のマイクロ電子構造体。 - 前記第1導電性ビア電極又は第2導電性ビア電極の少なくともいずれか1つは、前記導電性パッドを貫通して前記基板内に延長される垂直伸張部分と、
前記第1開口又は第2開口の少なくともいずれか1つの外側の前記導電性パッドの表面に沿って延長される側面伸張部分とを備えることを特徴とする請求項1に記載のマイクロ電子構造体。 - 前記第1及び第2導電性ビア電極の少なくとも一つ上の導電性バンプをさらに有し、
前記導電性バンプは、前記第1及び第2導電性ビア電極より大きい柔軟性を有することを特徴とする請求項6に記載のマイクロ電子構造体。 - 前記第1導電性ビア電極又は第2導電性ビア電極の少なくともいずれか1つは、前記基板を完全に貫通して延長されないことを特徴とする請求項1に記載のマイクロ電子構造体。
- 前記第1導電性ビア電極又は第2導電性ビア電極の少なくともいずれか1つは、前記基板を完全に貫通して延長されることを特徴とする請求項1に記載のマイクロ電子構造体。
- 前記第1導電性ビア電極又は第2導電性ビア電極の少なくともいずれか1つの露出した部分は、前記導電性パッドの反対側の前記基板の表面から突出することを特徴とする請求項9に記載のマイクロ電子構造体。
- 前記導電性パッド内の前記第1開口又は第2開口の少なくともいずれか1つは、前記基板内に延長されるテーパード(tapered)開口を備えることを特徴とする請求項1に記載のマイクロ電子構造体。
- マルチチップモジュールであって、
モジュール基板と、
前記モジュール基板上に提供され、第1基板上に第1導電性パッドを有し、前記第1導電性パッド及び前記第1基板を貫通して延長される第1及び第2開口を含む第1半導体チップと、
前記第1導電性パッド上に提供され、前記モジュール基板への電気的な接続を提供するように前記第1開口を貫通して延長される第1導電性ビア電極と、
前記第1導電性ビア電極に隣接して前記第1導電性パッド上に提供され、前記モジュール基板への電気的な接続を提供するように前記第2開口を貫通して延長される第2導電性ビア電極と、
前記第1及び第2開口に対応する夫々の側壁上と前記第1導電性パッドの表面上とに形成された絶縁層と、を有し、
前記第1導電性ビア電極は、前記絶縁層によって前記第1導電性パッドから電気的に絶縁されていることを特徴とするマルチチップモジュール。 - 前記絶縁層は、前記第2開口に隣接した前記第1導電性パッドの一部分を露出させ、前記第1導電性ビア電極は、前記第1導電性パッドから電気的に絶縁され、前記第2導電性ビア電極は、前記第1導電性パッドと電気的に接続されることを特徴とする請求項12に記載のマルチチップモジュール。
- 前記第1半導体チップ上に提供される第2半導体チップをさらに有し、
前記第2半導体チップは、第2基板上に第2導電性パッドを有し、前記第2導電性パッド及び前記第2基板を貫通して延長される第3開口を含み、
前記第1導電性ビア電極は、前記第3開口を貫通してさらに延長され、前記第2導電性パッドに電気的に接続されることを特徴とする請求項12に記載のマルチチップモジュール。 - 前記第1半導体チップは、前記第1導電性パッド及び前記第1基板を貫通して延長される第4開口をさらに含み、
前記第2半導体チップは、前記第2導電性パッド及び前記第2基板を貫通して延長される第5開口をさらに含み、
前記マルチチップモジュールは、前記第2半導体チップ上に提供され、第3基板上に第3導電性パッドを有し、前記第3導電性パッド及び前記第3基板を貫通して延長される第6開口を含む第3半導体チップと、
前記モジュール基板から電気的な接続を提供するように前記第1、第2、及び第3基板内の前記第4、第5、及び第6開口を貫通して延長される第3導電性ビア電極とをさらに有することを特徴とする請求項14に記載のマルチチップモジュール。 - 前記モジュール基板上の前記第1、第2、及び第3半導体チップ上にモールディング層をさらに有することを特徴とする請求項15に記載のマルチチップモジュール。
- 前記マルチチップモジュールは、システムインパッケージ(SIP)モジュールを含み、前記第1、第2及び第3半導体チップのうち一つは、メモリ素子を含み、他のものは、メモリ制御器を含むことを特徴とする請求項15に記載のマルチチップモジュール。
- 請求項17に記載の前記メモリ制御器及び前記メモリ素子を含む前記マルチチップモジュールからなることを特徴とするメモリカード。
- 請求項17に記載の前記マルチチップモジュールを含むシステムであって、
プロセッサと、
入出力装置と、
前記マルチチップモジュール、前記プロセッサ、及び前記入出力装置の間の通信を提供するように配されたバスとを有することを特徴とするマルチチップモジュールを含むシステム。 - 基板上に導電性パッドを形成する工程と、
前記導電性パッドを貫通して延長される第1及び第2開口を形成する工程と、
前記第1及び第2開口に対応する夫々の側壁上と前記導電性パッドの表面上とに絶縁層を形成する工程と、
前記導電性パッド内の前記第1開口を貫通して前記基板内に延長される第1導電性ビア電極を前記導電性パッド上に形成する工程と、
前記第1導電性ビア電極に隣接するように形成され、前記導電性パッド内の前記第2開口を貫通して前記基板内に延長される第2導電性ビア電極を前記導電性パッド上に形成する工程とを有し、
前記第1導電性ビア電極を形成する工程は、前記絶縁層が前記第1導電性ビア電極を前記導電性パッドから電気的に絶縁させるように、前記絶縁層上に前記第1導電性ビア電極を形成する工程を含むことを特徴とする集積回路素子の製造方法。 - 前記第2導電性ビア電極を形成する工程の前に、
前記導電性パッド内の前記第2開口に隣接した前記導電性パッドの表面を露出させるように前記絶縁層をパターニングする工程をさらに有し、
前記第2導電性ビア電極を形成する工程は、前記導電性パッドの前記露出した表面上に電気的に接続されるように前記第2導電性ビア電極を形成する工程を含むことを特徴とする請求項20に記載の集積回路素子の製造方法。 - 前記第2導電性ビア電極を形成する工程は、前記絶縁層が前記第2導電性ビア電極を前記導電性パッドから電気的に絶縁させるように、前記絶縁層上に前記第2導電性ビア電極を形成する工程を含むことを特徴とする請求項20に記載の集積回路素子の製造方法。
- 前記第1及び第2導電性ビア電極を形成する工程は、前記導電性パッド内の前記第1及び第2開口内と、前記絶縁層上とに導電層を形成する工程と、
前記第1及び第2導電性ビア電極を規定するように前記導電層をパターニングする工程とを含むことを特徴とする請求項20に記載の集積回路素子の製造方法。 - 前記第1及び第2導電性ビア電極を形成する工程は、前記第1及び第2開口内と、前記基板上とにシード層を形成する工程と、
前記基板上にその一部分を露出させるマスクパターンを形成する工程と、
前記第1及び第2開口内と、前記基板の前記露出した部分上とに、前記第1及び第2導電性ビア電極を規定するように前記シード層上に金属メッキする工程とを含むことを特徴とする請求項20に記載の集積回路素子の製造方法。 - 前記導電性パッド内に前記基板内に延長される第3開口を形成する工程と、
前記第1及び第2導電性ビア電極に隣接した前記絶縁層上に、前記第3開口を貫通して前記基板内に延長される第3導電性ビア電極を形成する工程とをさらに有し、
前記第3導電性ビア電極は、前記絶縁層によって前記導電性パッドから電気的に絶縁されることを特徴とする請求項20に記載の集積回路素子の製造方法。 - 前記第1及び第2導電性ビア電極を形成する工程は、前記導電性パッドを貫通して前記基板内に延長される垂直伸張部分と、前記導電性パッドの表面に沿って延長される側面伸張部分とを含む前記第1導電性ビア電極を形成する工程と、
前記導電性パッドを貫通して前記基板内に延長される垂直伸張部分と、前記導電性パッドの表面に沿って延長される側面伸張部分とを含む前記第2導電性ビア電極を形成する工程とをさらに含むことを特徴とする請求項20に記載の集積回路素子の製造方法。 - 前記第1導電性ビア電極又は第2導電性ビア電極の少なくともいずれか1つが前記基板を完全に貫通するように、前記導電性パッドの反対側の前記基板の表面の一部分を除去する工程をさらに有することを特徴とする請求項20に記載の集積回路素子の製造方法。
- 前記導電性パッド内に前記第1及び第2開口を形成する工程は、前記基板内に延長される第1及び第2テーパード(tapered)開口を形成する工程を含むことを特徴とする請求項20に記載の集積回路素子の製造方法。
- 前記第1及び第2テーパード開口を形成する工程は、前記第1及び第2開口を形成するように、前記導電性パッド及び前記基板を異方性エッチングする工程を含むことを特徴とする請求項28に記載の集積回路素子の製造方法。
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