JP5205066B2 - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- JP5205066B2 JP5205066B2 JP2008009023A JP2008009023A JP5205066B2 JP 5205066 B2 JP5205066 B2 JP 5205066B2 JP 2008009023 A JP2008009023 A JP 2008009023A JP 2008009023 A JP2008009023 A JP 2008009023A JP 5205066 B2 JP5205066 B2 JP 5205066B2
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Description
図1は本実施の形態1の半導体装置の半導体チップの要部平面図、図2の左側は図1の半導体チップの内部領域のY1−Y1線の断面図、図2の右側は図1の半導体チップのパッド配置領域のX1−X1線の断面図、図3は図2の破線A内の配線層の拡大断面図、図4は図2の破線B内の配線層の拡大断面図である。なお、図1の符号Xは第1方向、符号Yは第1方向Xに直交する第2方向を示している。
図18の左側は本実施の形態2の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。また、図19および図20は本実施の形態2の半導体装置の半導体チップを示す要部平面図であり、それぞれ上記図5および図6に対応するものである。すなわち、図19には、パッドPD形成領域近傍での第5配線層M5の導体パターン(第5配線5Fおよびダミー配線DL)のレイアウトの例が示され、図20には、パッドPD形成領域近傍での第4配線層M4の導体パターン(第4配線5Eおよびダミー配線DL)のレイアウトの例が示されている。また、図19および図20には、パッドPD、開口部形成領域SA、プローブ接触領域PAおよびワイヤ接合領域WAの位置が点線で示され、ワイヤ内包領域PWAの位置が一点鎖線で示されている。
図24の左側は本実施の形態3の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。また、図25および図26は本実施の形態3の半導体装置の半導体チップを示す要部平面図であり、それぞれ上記図5および図6に対応するものである。すなわち、図25には、パッドPD形成領域近傍での第5配線層M5の導体パターン(第5配線5Fおよびダミー配線DL)のレイアウトの例が示され、図26には、パッドPD形成領域近傍での第4配線層M4の導体パターン(第4配線5Eおよびダミー配線DL)のレイアウトの例が示されている。また、図25および図26には、パッドPD、開口部形成領域SAおよびプローブ接触領域PAの位置が点線で示されている。
図27の左側は本実施の形態4の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図、図28は図27の半導体チップのパッド配置領域の最上の配線層の要部拡大断面図である。
図34の左側は本実施の形態5の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。
図35の左側は本実施の形態6の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。
図36の左側は本実施の形態7の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。また、図37および図38は本実施の形態7の半導体装置の半導体チップを示す要部平面図であり、それぞれ上記図5および図6に対応するものである。すなわち、図37には、パッドPD形成領域近傍での第5配線層M5の導体パターン(第5配線5Fおよびダミー配線DL)のレイアウトの例が示され、図38には、パッドPD形成領域近傍での第4配線層M4の導体パターン(第4配線5Eおよびダミー配線DL)のレイアウトの例が示されている。また、図37および図38には、パッドPD、開口部形成領域SAおよびプローブ接触領域PAの位置が点線で示されている。
図40の左側は本実施の形態8の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。また、図41は本実施の形態8の半導体装置の半導体チップを示す要部平面図であり、上記図38に対応するものである。すなわち、図41には、パッドPD形成領域近傍での第4配線層M4の導体パターン(第4配線5Eおよびダミー配線DL)のレイアウトの例が示されている。また、図41には、パッドPD、開口部形成領域SAおよびプローブ接触領域PAの位置が点線で示されている。
図42の左側は本実施の形態9の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。また、図43は本実施の形態9の半導体装置の半導体チップを示す要部平面図であり、上記図37に対応するものである。すなわち、図43には、パッドPD形成領域近傍での第5配線層M5の導体パターン(第5配線5Fおよびダミー配線DL)のレイアウトの例が示されている。また、図43には、パッドPD、開口部形成領域SA、プローブ接触領域PAおよびワイヤ接合領域WAの位置が点線で示され、ワイヤ内包領域PWAの位置が一点鎖線で示されている。
図45の左側は本実施の形態10の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。また、図46は本実施の形態10の半導体装置の半導体チップを示す要部平面図であり、上記図38に対応するものである。すなわち、図46には、パッドPD形成領域近傍での第4配線層M4の導体パターン(第4配線5Eおよびダミー配線DL)のレイアウトの例が示されている。また、図46には、パッドPD、開口部形成領域SA、プローブ接触領域PAおよびワイヤ接合領域WAの位置が点線で示され、ワイヤ内包領域PWAの位置が一点鎖線で示されている。
図47の左側は本実施の形態11の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。また、図48は本実施の形態11の半導体装置の半導体チップを示す要部平面図であり、上記図37に対応するものである。すなわち、図48には、パッドPD形成領域近傍での第5配線層M5の導体パターン(第5配線5Fおよびダミー配線DL)のレイアウトの例が示されている。また、図48には、パッドPD、開口部形成領域SAおよびプローブ接触領域PAの位置が点線で示されている。
図49の左側は本実施の形態12の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。また、図50は本実施の形態12の半導体装置の半導体チップを示す要部平面図であり、上記図38に対応するものである。すなわち、図50には、パッドPD形成領域近傍での第4配線層M4の導体パターン(第4配線5Eおよびダミー配線DL)のレイアウトの例が示されている。また、図50には、パッドPD、開口部形成領域SAおよびプローブ接触領域PAの位置が点線で示されている。
図51の左側は本実施の形態13の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。
図52の左側は本実施の形態14の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。
図53の左側は本実施の形態15の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。
図54の左側は本実施の形態16の半導体装置の半導体チップの内部領域の図1のY1−Y1線に相当する箇所の断面図、右側は同じ半導体チップのパッド配置領域の図1のX1−X1線に相当する箇所の断面図である。また、図55および図56は本実施の形態16の半導体装置の半導体チップを示す要部平面図であり、それぞれ上記図5および図6に対応するものである。すなわち、図55には、パッドPD形成領域近傍での第5配線層M5の導体パターン(第5配線5Fおよびダミー配線DL)のレイアウトの例が示され、図56には、パッドPD形成領域近傍での第4配線層M4の導体パターン(第4配線5Eおよびダミー配線DL)のレイアウトの例が示されている。また、図55および図56には、パッドPD、開口部形成領域SA、プローブ接触領域PAおよびワイヤ接合領域WAの位置が点線で示されている。
2 分離部
3A,3B,3C,3D,3D1,3D2,3E,3F 絶縁膜
4A,4B,4D 絶縁膜
5 導体膜
5A 最下配線
5B 第1配線
5C 第2配線
5D 第3配線
5E 第4配線
5F 第5配線
5G 最上配線
6 導体膜
6A,6C プラグ(接続部)
7A,7B 開口部
6M 導体パターン(第2導体パターン)
Q MIS・FET
ML 最下の配線層
M1 第1配線層
M2 第2配線層
M3 第3配線層
M4 第4配線層
M5 第5配線層
MH 最上の配線層
MM0,MM1,MM2 主配線部材
BM0,BM1,BM2,BM3 バリアメタル膜
PD ボンディングパッド(外部端子)
S 開口部
PA プローブ接触領域(第1領域)
WA ワイヤ接合領域
PWA ワイヤ内包領域(第1領域)
SA 開口部形成領域(第1領域)
PRB プローブ
CLK クラック
LV 配線溝
TH スルーホール
THA 孔
DL ダミー配線
W1,L1 寸法
W2 幅
Claims (16)
- 厚さ方向に沿って互いに反対側に位置する第1主面および第2主面を有する半導体基板と、
前記半導体基板の第1主面に形成された複数の素子と、
前記半導体基板の第1主面上に形成された複数の配線層と、
前記複数の配線層間を電気的に接続する接続部とを備え、
前記複数の配線層の各々は、第1導体パターンと、前記第1導体パターン間を絶縁する絶縁膜とを有しており、
前記複数の配線層のうちの最上の配線層は、前記第1導体パターンにより形成される外部端子と、前記外部端子の一部が露出されるような開口部を有する前記絶縁膜とを有しており、
前記外部端子の第1領域の直下に、断面凹状の第2導体パターンが前記外部端子の下面に接触した状態で形成されており、
前記第2導体パターンは、高融点金属、高融点金属窒化物またはこれらの積層体により形成されており、
前記第2導体パターンは、前記外部端子の第1領域内において境界を有しないようにパターン形成されており、
前記最上の配線層の直下の配線層において、前記外部端子の第1領域および前記第2導体パターンの直下には、前記第1導体パターンが存在しないことを特徴とする半導体装置。 - 請求項1記載の半導体装置において、前記第1領域は、プローブの接触領域であることを特徴とする半導体装置。
- 請求項1記載の半導体装置において、前記第1領域は、プローブの接触領域およびボンディングワイヤの接合領域を含む領域であることを特徴とする半導体装置。
- 請求項1記載の半導体装置において、前記第1領域は、前記最上の配線層の前記絶縁膜に形成された前記開口部の形成領域であることを特徴とする半導体装置。
- 請求項1記載の半導体装置において、前記最上の配線層の直下の配線層よりも下層の配線層においては、前記外部端子の第1領域の直下に、前記第1導体パターンが形成されていることを特徴とする半導体装置。
- 請求項1記載の半導体装置において、
前記最上の配線層の直下の配線層のさらに直下の配線層において、前記外部端子の第1領域の直下には、前記第1導体パターンが形成されておらず、
前記最上の配線層の直下の配線層のさらに直下の配線層よりも下層の配線層においては、前記外部端子の第1領域の直下に、前記第1導体パターンが形成されていることを特徴とする半導体装置。 - 請求項1記載の半導体装置において、前記第1導体パターンは配線またはダミーパターンであることを特徴とする半導体装置。
- 請求項1記載の半導体装置において、前記複数の配線層のうちの所望の配線層の前記第1導体パターンは、前記絶縁膜に形成された配線開口部内に導体膜が埋め込まれることで形成されていることを特徴とする半導体装置。
- 請求項1記載の半導体装置において、前記第1導体パターンは銅を主材料として形成されていることを特徴とする半導体装置。
- 請求項1記載の半導体装置において、前記複数の配線層のうちの所望の配線層の前記絶縁膜は、酸化シリコンよりも誘電率が低い材料により形成されていることを特徴とする半導体装置。
- 請求項1記載の半導体装置において、前記外部端子の直下の前記半導体基板の前記第1主面には前記複数の素子が形成されていることを特徴とする半導体装置。
- 請求項1記載の半導体装置において、前記外部端子の直下の前記半導体基板の前記第1主面には前記複数の素子が形成されていないことを特徴とする半導体装置。
- 請求項1記載の半導体装置において、前記第2導体パターンは、タングステン、チタン、タンタル、窒化タングステン、窒化チタン、窒化タンタルまたはこれらのうち選択された2以上の材料の積層体により形成されていることを特徴とする半導体装置。
- (a)厚さ方向に沿って互いに反対側に位置する第1主面および第2主面を有する半導体基板を用意する工程と、
(b)前記半導体基板の第1主面に複数の素子を形成する工程と、
(c)前記半導体基板の第1主面上に複数の配線層を形成する工程とを有し、
前記(c)工程は、
(c1)前記複数の配線層の各々において絶縁膜および第1導体パターンを形成する工程と、
(c2)前記複数の配線層間を電気的に接続する接続部を形成する工程とを有しており、
前記(c1)工程は、
前記複数の配線層の最上の配線層に、前記第1導体パターンにより形成される外部端子を形成する工程と、
前記最上の配線層の直下の配線層を形成する工程において、前記外部端子の第1領域の直下には前記第1導体パターンを形成せず、それ以外の領域に前記第1導体パターンを形成する工程とを有しており、
前記(c2)工程は、
前記最上の配線層と、前記最上の配線層の直下の配線層との各々の前記第1導体パターン同士を電気的に接続する前記接続部を形成する工程において、前記外部端子の第1領域の直下に、前記外部端子の下面に接するように断面凹状の第2導体パターンを形成する工程を有しており、
前記第2導体パターンは、高融点金属、高融点金属窒化物またはこれらの積層体により形成され、前記第1領域内において境界を有しないように形成されていることを特徴とする半導体装置の製造方法。 - 請求項14記載の半導体装置の製造方法において、前記第1導体パターンを化学機械研磨法により形成することを特徴とする半導体装置の製造方法。
- 請求項14記載の半導体装置の製造方法において、前記接続部および前記第2導体パターンを化学機械研磨法により形成することを特徴とする半導体装置の製造方法。
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