JP5346044B2 - 積層半導体基板およびその製造方法並びに積層チップパッケージの製造方法 - Google Patents
積層半導体基板およびその製造方法並びに積層チップパッケージの製造方法 Download PDFInfo
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- JP5346044B2 JP5346044B2 JP2011011788A JP2011011788A JP5346044B2 JP 5346044 B2 JP5346044 B2 JP 5346044B2 JP 2011011788 A JP2011011788 A JP 2011011788A JP 2011011788 A JP2011011788 A JP 2011011788A JP 5346044 B2 JP5346044 B2 JP 5346044B2
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Description
このような積層半導体基板では、複数の半導体基板すべての第1の配線電極を直線状につなぐ貫通孔が形成される。貫通電極はその貫通孔を通っているから一本のまっすぐな棒状に形成される。
第1の実施の形態
(積層半導体ウェハ100の構造)
まず、図1〜図4を参照して積層半導体ウェハ100の構造について説明する。積層半導体ウェハ100は、半導体ウェハ1を用いて製造される。積層半導体ウェハ100は、本発明の第1の実施の形態に係る積層半導体基板であって、半導体ウェハ1が複数積層されている。図1に示されている積層半導体ウェハ100では、8枚の半導体ウェハ1が積層されている。本発明に係る積層半導体基板では、複数の半導体基板が積層されていればよいため、半導体ウェハ1の積層数は8枚には限定されない。
以上のように、積層半導体ウェハ100では、溝部21Aを挟んで互いに隣り合う2つのデバイス領域10A,10Bにそれぞれ配線電極15,16が形成されている。配線電極15,16は、デバイス領域10A、10Bから溝部21Aの内側に延出し、しかも、互いに接することなく所定間隔を隔てて離反して配置されている。また、デバイス領域10A、10Bは周囲全体が溝部内絶縁層22によって囲まれ互いに絶縁されている。そして、積層方向に沿って重なった8つのデバイス領域10A,10Bによって積層チップ領域40A,40Bが形成されている。積層チップ領域40A,40Bにおいて、それぞれに含まれる8つのデバイス領域10が配線電極15,16および貫通電極17,18によって接続されている。
続いて以上のような構成を有する積層半導体ウェハ100の製造方法について、前述した図1〜図4、図20〜図22に加えて、図10〜図19を参照して説明する。ここで、図10は製造途中の積層半導体ウェハを示す図2と同様の平面図である。図11は図10の後続の積層半導体ウェハを示す図2と同様の平面図である。図12は図10の12−12線断面図である。図13は図11の13−13線断面図である。また、図14は図13の後続の積層半導体ウェハを示す図12と同様の断面図である。さらに、図15〜図19はそれぞれ順次後続の積層半導体ウェハを示す図12と同様の断面図である。
以上のような構成を有する積層半導体ウェハ100を用いることによって、積層チップパッケージ200を製造することができる。積層チップパッケージ200の構造について図5〜図8を参照して説明すると、次のとおりである。ここで、図5は積層チップパッケージ200の表側からみた斜視図、図6は同じく裏側からみた斜視図である。図7は積層チップパッケージ200の要部を示す一部省略した斜視図、図8は図5の8−8線断面図である。
続いて、以上のような構成を備えた積層チップパッケージ200は、前述した積層半導体ウェハ100を用いて製造することができる。この場合、積層半導体ウェハ100をダイシングソーを用いてスクライブライン3A,3Bに沿って切断すると、積層チップ領域40A,40B等の各積層チップ領域がブロック状に分割される。分割されたブロック状の各部分が積層チップパッケージ200となる。
関係式:Wb≦W1+2Wd
続いて、図23、図24を参照して、本発明の第2の実施の形態に係る積層半導体ウェハ110について説明する。ここで、図23は積層半導体ウェハ110の2つのデバイス領域10の要部を示す平面図である。図24は製造途中の半導体ウェハ2の要部を示す斜視図である。
続いて、図25、図26を参照して、本発明の第3の実施の形態に係る積層半導体ウェハ120について説明する。ここで、図25は積層半導体ウェハ120の2つのデバイス領域10の要部を示す平面図である。図26は製造途中の半導体ウェハ3の要部を示す斜視図である。
図29を参照して、積層半導体ウェハ121について説明する。ここで、図29は、積層半導体ウェハ121を構成する半導体ウェハ4の2つのデバイス領域10の要部を示す平面図である。
Claims (14)
- スクライブラインに沿った複数のスクライブ溝部が形成されている複数の半導体基板が積層されている積層半導体基板であって、
前記複数の半導体基板は、それぞれ
前記複数のスクライブ溝部のいずれか少なくとも1つに接し、かつ半導体装置が形成され、それぞれ絶縁されている複数のデバイス領域と、
該複数のデバイス領域のうちの前記複数のスクライブ溝部のいずれか少なくとも1つの介在溝部を挟んで隣り合う第1のデバイス領域および第2のデバイス領域それぞれの前記半導体装置に接続され、かつ前記第1のデバイス領域および第2のデバイス領域からそれぞれ前記介在溝部の内側まで延びている端子部と、該端子部の前記介在溝部の内側に配置されている端部につなぎ目なく接続され、かつ該端部から前記介在溝部の幅方向の中央に向かって延び、さらに全体が前記介在溝部の内側に配置されている電極パッドとを備えた第1の配線電極および第2の配線電極とを有し、
前記積層半導体基板は、
前記複数の半導体基板が積層されている積層方向に重なった前記複数の半導体基板の前記介在溝部を貫通し、かつ前記第1の配線電極のうちの前記積層方向に重なった積層電極群を構成している複数の前記第1の配線電極が出現している貫通孔が形成され、
該貫通孔を通って前記複数の半導体基板をすべて貫通し、かつ前記貫通孔に出現しているすべての前記第1の配線電極の前記電極パッドに接し、さらに前記貫通孔を埋め尽くす棒状に形成されている貫通電極と、
前記複数の半導体基板すべてにおける前記積層方向に重なった前記デバイス領域から構成される複数の積層チップ領域と、
前記複数の半導体基板のうちの、前記第1の配線電極および第2の配線電極が露出している最上位基板の前記積層方向に沿った反対側に配置されている最下位基板の前記半導体装置が形成されていない裏面側の表面にだけ形成され、該表面において前記貫通電極に接続された裏面側電極パッドとを有し、
前記第1の配線電極および第2の配線電極の前記電極パッドは、前記積層方向に沿った孔部が形成され、かつ互いに離反し、
前記貫通孔は、前記積層電極群を構成している複数の前記第1の配線電極それぞれの前記電極パッドに形成されている前記孔部をすべてつなぐ直線状に形成され、
前記複数の半導体基板すべてについて、前記電極パッドの前記孔部に臨む内側面全体が前記貫通電極の周側面に直に接している積層半導体基板。 - 前記第1の配線電極および第2の配線電極の間隔をW1、前記積層半導体基板を前記スクライブラインに沿って切断するときに用いるダイシングソーのブレードの幅をWb、さらに、前記第1の配線電極および第2の配線電極それぞれにおける前記電極パッドの中で最も前記介在溝部の内側に延出している部分を延出端部とし、該延出端部の幅をWdとした場合において、関係式:Wb≦W1+2Wdを満たす請求項1記載の積層半導体基板。
- 前記複数の半導体基板それぞれの前記第1の配線電極の中で位置が共通している前記第1の配線電極を共通配線電極としたときに、前記複数の半導体基板すべてについて同じ前記共通配線電極によって前記積層電極群が構成されている請求項1または2記載の積層半導体基板。
- 前記第1の配線電極および第2の配線電極は、前記電極パッドのうちの前記介在溝部の内側に最も延出している最端部を対峙させて形成されている請求項1〜3のいずれか一項記載の積層半導体基板。
- 前記複数のスクライブ溝部が前記半導体基板の表面から裏面にまで達する貫通溝部として形成され、かつ該スクライブ溝部の内側に形成されている溝部内絶縁層を更に有し、
前記貫通孔は、前記積層電極群を構成している複数の前記第1の配線電極それぞれの前記電極パッドに形成されている前記孔部すべてと、すべての前記半導体基板の前記積層方向に重なった前記溝部内絶縁層とを貫通する直線状に形成されている請求項1〜4のいずれか一項記載の積層半導体基板。 - 前記電極パッドは、矩形状または両端部が前記介在溝部の内側に向かって開くように配置されたU字状に形成されている請求項1〜5のいずれか一項記載の積層半導体基板。
- 前記半導体基板を4枚積層したユニット積層基板を1または2以上積層することによって、前記積層半導体基板が構成されている請求項1〜6のいずれか一項記載の積層半導体基板。
- シリコン基板の表面に半導体装置が形成されている処理前基板について、スクライブラインに沿った複数のスクライブ溝部を形成することによって、前記複数のスクライブ溝部のいずれか少なくとも1つに接し、かつ半導体装置が形成されている複数のデバイス領域を形成するデバイス領域形成工程と、
前記複数のデバイス領域のうちの前記複数のスクライブ溝部のいずれか少なくとも1つの介在溝部を挟んで隣り合う第1のデバイス領域および第2のデバイス領域それぞれの前記半導体装置に接続され、かつ前記第1のデバイス領域および第2のデバイス領域からそれぞれ前記介在溝部の内側まで延びている端子部と、該端子部の前記介在溝部の内側に配置されている端部につなぎ目なく接続され、かつ該端部から前記介在溝部の幅方向の中央に向かって延び、さらに全体が前記介在溝部の内側に配置されている電極パッドとを備えた第1の配線電極および第2の配線電極を形成することによって、第1の電極付き基板および第2の電極付き基板を含む複数の電極付き基板を製造する基板製造工程と、
前記第1の電極付き基板における前記半導体装置が形成されていない前記シリコン基板の裏面側を前記スクライブ溝部が出現するまで研磨したのち、該裏面側に前記第2の電極付き基板の前記表面側を接着することによって、積層ウェハを製造する積層工程と、
前記積層ウェハについて、複数の前記電極付き基板が積層されている積層方向に重なった複数の前記電極付き基板の前記介在溝部を貫通し、かつ前記第1の配線電極のうちの前記積層方向に重なった積層電極群を構成している複数の前記第1の配線電極が出現するようにして貫通孔を形成する貫通孔形成工程と、
前記貫通孔に出現しているすべての前記第1の配線電極に接する貫通電極を前記貫通孔を通って複数の前記電極付き基板をすべて貫通し、かつ前記貫通孔を埋め尽くす棒状に形成する貫通電極形成工程と、
複数の前記電極付き基板のうちの、前記第1の配線電極および第2の配線電極が露出している最上位基板の前記積層方向に沿った反対側に配置されている最下位基板の前記半導体装置が形成されていない裏面側の表面にだけ形成され、該表面において前記貫通電極に接続された裏面側電極パッドを形成するパッド形成工程とを有し、
前記基板製造工程において、前記第1の配線電極および第2の配線電極の前記電極パッドを前記積層方向に沿った孔部が形成され、かつ互いに離反するように形成し、
前記貫通孔形成工程において、前記電極パッドの前記孔部に臨む内側面全体が出現するようにして前記貫通孔を形成する積層半導体基板の製造方法。 - 前記基板製造工程において、前記第1の配線電極および第2の配線電極の間隔をW1、前記積層半導体基板を前記スクライブラインに沿って切断するときに用いるダイシングソーのブレードの幅をWb、さらに、前記第1の配線電極および第2の配線電極それぞれにおける前記電極パッドの中で最も前記介在溝部の内側に延出している部分を延出端部とし、該延出端部の幅をWdとした場合において、関係式:Wb≦W1+2Wdを満たすようにして、前記第1の配線電極および第2の配線電極を形成する請求項8記載の積層半導体基板の製造方法。
- 前記基板製造工程において、前記電極パッドのうちの前記介在溝部の内側に最も延出している最端部が対峙するようにして前記第1の配線電極および第2の配線電極を形成する請求項8または9記載の積層半導体基板の製造方法。
- 前記貫通孔形成工程において、前記積層電極群を構成している複数の前記第1の配線電極それぞれの前記電極パッドに形成されている前記孔部をすべてつなぐ直線状に前記貫通孔を形成する請求項8〜10のいずれか一項記載の積層半導体基板の製造方法。
- 絶縁性の樹脂からなる溝部内絶縁層を前記複数のスクライブ溝部の内側に形成する絶縁層形成工程を更に有し、
前記貫通孔形成工程において、前記積層電極群を構成している複数の前記第1の配線電極それぞれの前記電極パッドに形成されている前記孔部すべてと、すべての前記半導体基板の前記積層方向に重なった前記溝部内絶縁層とを貫通する直線状に前記貫通孔を形成する請求項8〜10のいずれか一項記載の積層半導体基板の製造方法。
- 請求項8記載の製造方法によって製造された積層半導体基板をそれぞれの前記スクライブ溝部に沿って切断し、その切断面に絶縁性の樹脂からなる樹脂絶縁層を出現させて積層チップパッケージを製造する積層チップパッケージの製造方法。
- 前記積層半導体基板を切断するときに、前記積層半導体基板における前記第1の配線電極と前記第2の配線電極との間を切断する請求項13記載の積層チップパッケージの製造方法。
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KR102421816B1 (ko) * | 2020-06-26 | 2022-07-20 | 주식회사 심텍 | 캐비티 내에 실장된 칩을 구비하는 적층 패키지 및 이의 제조 방법 |
CN114695141A (zh) * | 2020-12-31 | 2022-07-01 | 浙江驰拓科技有限公司 | 一种芯片叠封方法、层叠封装芯片及电子存储设备 |
KR20220122891A (ko) | 2021-02-26 | 2022-09-05 | 삼성전자주식회사 | 반도체 소자 |
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JPS6453440A (en) * | 1987-08-25 | 1989-03-01 | Hitachi Ltd | Three-dimensional semiconductor integrated circuit device |
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JP4113679B2 (ja) | 2001-02-14 | 2008-07-09 | イビデン株式会社 | 三次元実装パッケージの製造方法 |
JP4020367B2 (ja) | 2001-04-17 | 2007-12-12 | 株式会社ルネサステクノロジ | 半導体装置の製造方法 |
JP2003163324A (ja) | 2001-11-27 | 2003-06-06 | Nec Corp | ユニット半導体装置及びその製造方法並びに3次元積層型半導体装置 |
JP2005026582A (ja) | 2003-07-04 | 2005-01-27 | Olympus Corp | 半導体装置及びその半導体装置の製造方法 |
FR2895568B1 (fr) | 2005-12-23 | 2008-02-08 | 3D Plus Sa Sa | Procede de fabrication collective de modules electroniques 3d |
JP2007234881A (ja) | 2006-03-01 | 2007-09-13 | Oki Electric Ind Co Ltd | 半導体チップを積層した半導体装置及びその製造方法 |
JP2008187061A (ja) | 2007-01-31 | 2008-08-14 | Elpida Memory Inc | 積層メモリ |
FR2923081B1 (fr) | 2007-10-26 | 2009-12-11 | 3D Plus | Procede d'interconnexion verticale de modules electroniques 3d par des vias. |
US7745259B2 (en) | 2008-06-30 | 2010-06-29 | Headway Technologies, Inc. | Layered chip package and method of manufacturing same |
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