JP5429160B2 - 半導体光配線装置及び半導体光配線方法 - Google Patents
半導体光配線装置及び半導体光配線方法 Download PDFInfo
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Description
2、2a、2b、2−1、2−2、21 光配線チップ
3 伝送部
4 接続部
5 実装基板
6 スペーサ
7 接続用バンプ
8 コイル
9 外部接続ワイヤ
10 光導波路
11 光分岐構造
12 クロック信号光
13 受光素子
14 受光素子接続用バンプ
15 発光素子
16 光変調器
17−1〜17−4 プロセッサコア
18 発光素子接続用バンプ
19 光変調器接続用バンプ
22 外部I/O用チップ
図2は、図1に示す半導体光配線装置を積層した構成例を示す断面図である。図2に示す半導体光配線装置は、LSIチップ1と光配線チップ2との組み合わせが複数積層された構造を示す。LSIチップ(第1LSIチップ)1−1、光配線チップ(第1光配線チップ)2−1、スペーサ6、LSIチップ(第2LSIチップ)1−2、及び、光配線チップ(第2光配線チップ)2−2が積層されている。LSIチップ1−1と光配線チップ2−1は、接続用バンプ7を介して電気的に接続されることによって、チップ表面同士が貼り合わされている。同様に、LSIチップ1−2と光配線チップ2−2も接続用バンプ7を介して電気的に接続されることによって、表面同士が貼り合わされている。
実施例2ではLSIチップ1が複数のマルチプロセッサを有し、光配線チップ2が複数のマルチプロセッサ間の信号を伝送する場合を説明する。本実施例において、図1及び図2に示す構成は同様である。
図7は実施例3の半導体光配線装置の構成例を示す断面図である。表面同士が貼り合わされたLSIチップ20と光配線チップ21上に、外部I/O(Input Output)用チップ(入出力用チップ)22が積層されている。LSIチップ20は、図1,2のLSIチップ1と同様であり、光配線チップ21は、図1,2の光配線チップ2と同様である。外部I/O用チップ22は、コイル8と、外部との信号入出力を行う電極パッドとを有している。電極パッドは、例えば、実装基板上の電気回路と信号入出力を行うための電極が形成されたチップなどである。LSIチップ20は、外部I/O用チップ22とコイル8を介して誘導結合により信号伝送が可能であり、さらに外部接続ワイヤ9を通じて実装基板5上の電気回路と信号の入出力ができる。また、コイル8は一例であり、インダクタなどその他の伝送部3を有していてもよい。
また、図7では、一対のLSIチップ20と光配線チップ21に外部I/O用チップ22が積層されている例を示した。これに限らず、LSIチップ20と光配線チップ21の組み合わせが複数積層された上に、外部I/O用チップ22またはメモリチップが積層される場合であってもよい。
本発明に係る半導体光配線装置は、LSIチップ1と光配線チップ2との貼り合わせ構造において、誘導結合(インダクティブカップリング)を利用し、LSIチップ間に光配線層を挟んで非接触で積層LSIチップ間の信号伝送を行う。このような構成を備える装置であれば、上記各実施例に限られることなくその他の構成であってもよい。
Claims (18)
- 光と電気との信号変換に関わる機能を有する光学素子が形成された光配線チップと、
非接触で信号を伝送する伝送部と、前記光学素子と電気的に接続する接続部とを有する半導体チップと、を備え、
前記半導体チップと前記光配線チップとの組み合わせが複数積層され、
前記光配線チップを挟んで配置された二つの前記半導体チップそれぞれに搭載された二つの前記伝送部を用いて信号を伝送する半導体光配線装置。 - 前記接続部は、前記伝送部と干渉しない領域に配置されることを特徴とする請求項1記載の半導体光配線装置。
- 前記光学素子は、前記伝送部と干渉しない領域に配置されることを特徴とする請求項1または2記載の半導体光配線装置。
- 前記接続部は、バンプが使用され、
前記光配線チップは、前記光学素子が前記接続部と電気的に接続することによって、前記半導体チップと貼り合わされることを特徴とする請求項1乃至3のいずれか一項に記載の半導体光配線装置。 - 前記光学素子は、前記二つの伝送部間の信号伝送による干渉を受けない領域に配置されることを特徴とする請求項1記載の半導体光配線装置。
- 前記光学素子は、前記二つの伝送部に挟まれる領域に配置されないことを特徴とする請求項1または6記載の半導体光配線装置。
- 前記光配線チップは、光導波路と、前記光学素子として少なくとも一つの受光素子とを有し、
前記光導波路は、クロック信号光を入力し、
前記少なくとも一つの受光素子は、前記クロック信号光に基づくクロック信号を前記半導体チップに伝送することを特徴とする請求項1乃至4、6、7のいずれか一項に記載の半導体光配線装置。 - 前記光導波路は、複数の末端を形成する光分岐構造を有し、
前記少なくとも一つの受光素子は、前記光導波路の複数の末端に配置される複数の受光素子から構成されることを特徴とする請求項8記載の半導体光配線装置。 - 前記複数の末端は、光学的に等距離に形成されることを特徴とする請求項9記載の半導体光配線装置。
- 前記半導体チップは、複数のプロセッサコアを有し、
前記光配線チップは、前記光学素子として、発光素子及び受光素子を少なくとも含む複数の素子組み合わせと、光導波路とを有し、
前記素子組み合わせは、前記複数のプロセッサコアそれぞれに少なくとも一つが配置され、配置されたプロセッサコアと電気的に接続されることを特徴とする請求項1乃至4、6乃至10のいずれか一項に記載の半導体光配線装置。 - 前記光導波路は、一つのプロセッサコアに配置された発光素子と他のプロセッサコアに配置された受光素子とを接続することを特徴とする請求項11記載の半導体光配線装置。
- 前記伝送部と、実装基板上の電気回路と信号を入出力する電極とを有する入出力チップが、さらに積層されていることを特徴とする請求項1乃至4、6乃至12のいずれか一項に記載の半導体光配線装置。
- 前記伝送部を有するメモリチップが、さらに積層されていることを特徴とする請求項1乃至4、6乃至12のいずれか一項に記載の半導体光配線装置。
- 前記伝送部は、コイル、インダクタ、及び容量結合手段との少なくともいずれかであることを特徴とする請求項1乃至4、6乃至14のいずれか一項に記載の半導体光配線装置。
- 前記光配線チップは、前記半導体チップより小さいサイズであることを特徴とする請求項1乃至4、6乃至15のいずれか一項に記載の半導体光配線装置。
- 前記光配線チップは、100μm以下の厚さであることを特徴とする請求項1乃至4、6乃至16のいずれか一項に記載の半導体光配線装置。
- 前記光配線チップは、Si、SiON、SiNのいずれかをコア材料とする光導波路を有することを特徴とする請求項1乃至4、6乃至17のいずれか一項に記載の半導体光配線装置。
- 光と電気との信号変換に関わる機能を有する光学素子を形成した光配線チップを作成し、
非接触で信号を伝送する伝送部を有する半導体チップを作成し、
前記半導体チップに、前記光学素子と電気的に接続する接続部を形成し、
前記光学素子と前記接続部とが電気的に接続するように前記光配線チップと前記半導体チップとを積層し、
前記半導体チップと前記光配線チップとの組み合わせを複数積層し、
前記複数積層は、前記光配線チップを挟んで配置された二つの前記半導体チップそれぞれに搭載された二つの前記伝送部を用いて信号を伝送するように積層する半導体光配線装置の製造方法。
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