JP2014068014A - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- JP2014068014A JP2014068014A JP2013197964A JP2013197964A JP2014068014A JP 2014068014 A JP2014068014 A JP 2014068014A JP 2013197964 A JP2013197964 A JP 2013197964A JP 2013197964 A JP2013197964 A JP 2013197964A JP 2014068014 A JP2014068014 A JP 2014068014A
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- layer
- semiconductor device
- metal
- insulating film
- interlayer insulating
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Abstract
【解決手段】第1面及び前記第1面に対向する第2面を含む基板及び基板を貫通するビアホール内の貫通電極が提供される。貫通電極と隣接して前記第1面に提供された集積回路が提供される。貫通電極は前記ビアホールの一部を満たす金属層及び前記ビアホールの残りの部分を満たす合金層を含む。前記合金層は前記金属層に含まれた金属元素及び前記金属層に含まれた金属元素と異なる金属元素を含む。
【選択図】図1
Description
図1は本発明の実施形態による半導体装置10を示した断面図である。
図2乃至図7Bは本発明の一実施形態による半導体装置の製造方法を示した断面図及び平面図である。
図11Aは貫通電極の形成が集積回路の形成と金属配線の形成との間に遂行されるビアミドル構造の製造方法の工程フローチャートである。図11Bは図11Aによって形成された半導体装置の断面図である。説明を簡単にするために貫通電極は図7A及び図7Bを参照して説明された実施形態の形状に図示されたが、これに限定されなく、他の実施形態による貫通電極の形状また適用され得る。説明を簡単にするために同一の構成に対する説明は省略され得る。
図12Aは貫通電極が集積回路と配線の形成以前に形成されるビアファースト構造の製造方法の工程フローチャートである。図12Bは図12Aによって形成された半導体装置の断面図である。説明を簡単にするために同一の構成に対する説明は省略され得る。
図13Aは貫通電極が集積回路形成の以後、及び第1金属配線と第2金属配線の形成との間に形成されるビアラスト構造の製造方法の工程フローチャートである。図13Bは図13Aによって形成された半導体装置の断面図である。説明を簡単にするために同一の構成に対する説明は省略され得る。
図14乃至図16は本発明の実施形態による半導体パッケージの断面図である。
100・・・基板
108・・・金属層
107・・・合金層
110・・・上部配線
114・・・下部保護膜
116・・・下部配線
118・・・バンプ
120・・・導電性連結部
124・・・上部保護膜
131・・・バリアー層
133・・・ライナー絶縁膜
171・・・ビアホール
BD・・・ボディー部
EX・・・延長部
TS・・・貫通電極
Claims (43)
- 第1面及び前記第1面に対向する第2面を含む基板と、
前記基板を貫通するビアホール内の貫通電極と、
前記貫通電極と隣接して前記第1面に提供された集積回路と、を含み、
前記貫通電極は、
前記ビアホールの一部を満たす金属層と、
前記ビアホールの残りの部分を満たす合金層と、を含み、
前記合金層は、前記金属層に含まれた金属元素及び前記金属層に含まれた金属元素と異なる金属元素を含む半導体装置。 - 前記貫通電極は、前記第1面に隣接する上面及び前記第2面に隣接する下面を含み、
前記合金層は、前記貫通電極の上面で露出された請求項1に記載の半導体装置。 - 前記金属層は、前記合金層と前記ビアホールとの側壁間に延長された延長部を含む請求項1に記載の半導体装置。
- 前記合金層上面の直径は、前記延長部の厚さより大きい請求項3に記載の半導体装置。
- 前記貫通電極と前記集積回路とを電気的に連結する上部配線をさらに含み、
前記金属層と前記合金層とは、前記上部配線と共通的に接している請求項3に記載の半導体装置。 - 前記貫通電極は、前記ビアホールの側壁に沿って提供されるバリアー層をさらに含み、
前記合金層は、前記バリアー層と接している請求項1に記載の半導体装置。 - 前記貫通電極は、前記金属層と前記合金層との間の分離導電層をさらに含み、
前記金属層と前記合金層とは、前記分離導電層によって分離されている請求項1に記載の半導体装置。 - 前記合金層の厚さは、前記貫通電極の総長さの約2%乃至約15%である請求項1に記載の半導体装置。
- 前記合金層の結晶粒の大きさは、前記金属層の結晶粒の大きさより小さい請求項1に記載の半導体装置。
- 前記金属層の平均結晶粒の大きさは、前記合金層の平均結晶粒の大きさの約2倍以上である請求項1に記載の半導体装置。
- 前記合金層は、銅合金又はタングステン合金を含む請求項1に記載の半導体装置。
- 前記金属層は、銅(Cu)を含み、前記合金層は、Cu−Mn合金(Mnは5atm%乃至8atm%)、Cu−Au合金(Auは10atm%以上)、又はCu−Ni合金(Niは2atm%以上)の中の少なくとも1つを含む請求項1に記載の半導体装置。
- 前記金属層は、タングステン(W)を含み、前記合金層は、W−Mn合金(Mnは5atm%乃至8atm%)、W−Au合金(Auは10atm%以上)、又はW−Ni合金(Niは2atm%以上)の中の少なくとも1つを含む請求項1に記載の半導体装置。
- 前記集積回路を覆う第1層間絶縁膜をさらに含み、
前記貫通電極は、前記第1面に対向する、前記第1層間絶縁膜の上面まで延長された請求項1に記載の半導体装置。 - 前記合金層の下面は、前記第1面より高い請求項14に記載の半導体装置。
- 前記集積回路を覆う第1層間絶縁膜をさらに含み、
前記第1層間絶縁膜は、前記貫通電極の上面を覆っている請求項1に記載の半導体装置。 - 前記集積回路を覆う第1層間絶縁膜と、
前記第1層間絶縁膜上の金属配線と、
前記金属配線上の第2層間絶縁膜と、をさらに含み、
前記貫通電極は、前記第1層間絶縁膜に対向する、前記第2層間絶縁膜の上面まで延長された請求項1に記載の半導体装置。 - 活性面、前記活性面と対向する非活性面、及び前記活性面と前記非活性面とを貫通するビアホールを含む基板と、
前記ビアホール内の貫通電極と、を含み、
前記貫通電極は、前記ビアホールの一部を満たす金属層、及び前記金属層上に提供され、前記金属層に含まれた金属元素と異なる金属元素を含む合金層を含み、
前記金属層は、前記合金層と前記ビアホールの側壁との間に延長された延長部を含む半導体装置。 - 前記金属層は、前記合金層下のボディー部をさらに含み、
前記延長部の結晶粒の大きさは、前記ボディー部の結晶粒大きさより小さい請求項18に記載の半導体装置。 - 前記貫通電極と隣接して前記基板の活性面上に提供された集積回路と、
前記貫通電極と前記集積回路とを電気的に連結する上部配線と、をさらに含み、
前記金属層と前記合金層とは、前記上部配線と共通的に接している請求項18に記載の半導体装置。 - 前記集積回路を覆う層間絶縁膜をさらに含み、
前記貫通電極は、前記層間絶縁膜を貫通して前記上部配線と連結される請求項20に記載の半導体装置。 - 前記合金層の下面は、前記活性面より高い請求項21に記載の半導体装置。
- 前記延長部の内側壁は、垂直ではない傾斜を有する請求項18に記載の半導体装置。
- 前記合金層は、前記金属層に含まれた金属元素をさらに含む請求項18に記載の半導体装置。
- 基板の第1面を貫通するビアホールを形成することと、
前記ビアホール内に金属層を形成することと、
前記金属層上に前記ビアホールを満たし、前記金属層に含まれた金属元素と異なる金属元素を含む合金層を形成することと、を含む半導体装置の製造方法。 - 前記基板の第1面と対向する前記基板の第2面を研磨して前記金属層を露出させることをさらに含む請求項25に記載の半導体装置の製造方法。
- 前記金属層を形成することは、前記ビアホールの側壁上にバリアー層及びシード層を順に形成することを含む請求項25に記載の半導体装置の製造方法。
- 前記金属層は、ビアホールの下面より前記ビアホールの上面の側壁上で相対的に薄く形成される請求項27に記載の半導体装置の製造方法。
- 前記金属層は、前記シード層を利用する電解鍍金で形成され、
前記金属層を形成することは、前記シード層に印加される電流を中止して前記ビアホールの側壁上に形成された前記金属層の一部を溶解させることをさらに含む請求項27に記載の半導体装置の製造方法。 - 前記金属層の溶解によって前記シード層の一部が露出され、
前記合金層は、前記露出されたシード層を利用する電解鍍金で形成される請求項29に記載の半導体装置の製造方法。 - 前記ビアホールの側壁上に形成された前記金属層の溶解の時、前記シード層の一部が共に溶解されて前記バリアー層が露出される請求項29に記載の半導体装置の製造方法。
- 前記合金層は、前記金属層と異なる方法によって形成され、
前記合金層を形成する前に、前記金属層の表面に分離導電層を形成することをさらに含む請求項25に記載の半導体装置の製造方法。 - 前記基板の第1面上に集積回路を形成することと、
前記集積回路を覆う第1層間絶縁膜を形成することと、
前記第1層間絶縁膜上に金属配線を形成することと、をさらに含み、
前記金属層及び前記合金層を形成することは、前記集積回路及び前記第1層間絶縁膜を形成した後及び前記金属配線を形成する前に遂行される請求項25に記載の半導体装置の製造方法。 - 前記基板の第1面上に集積回路を形成することをさらに含み、
前記金属層及び前記合金層を形成することは、前記集積回路の形成する前に遂行される請求項25に記載の半導体装置の製造方法。 - 前記基板の第1面上に集積回路を形成することと、
前記集積回路を覆う第1層間絶縁膜を形成することと、
前記第1層間絶縁膜上に金属配線を形成することと、
前記金属配線上に第2層間絶縁膜を形成することと、をさらに含み、
前記金属層及び前記合金層を形成することは、前記第2層間絶縁膜を形成した後に遂行される請求項25に記載の半導体装置の製造方法。 - 半導体基板及び前記半導体基板上の層間絶縁膜を含む半導体チップを含み、
前記半導体チップは、前記半導体チップの少なくとも一部を貫通するように垂直延長する貫通電極を含み、
前記貫通電極は、金属層及び前記金属層に隣接する合金層を含み、
前記合金層は、少なくとも2つの金属元素を含み、前記少なくとも2つの金属元素は、前記金属層に含まれた金属元素及び前記金属層に含まれた金属元素と異なる金属元素を含む半導体装置。 - 前記層間絶縁膜は、順に積層された第1層間絶縁膜及び第2層間絶縁膜を含み、前記貫通電極は、前記基板及び前記第1層間絶縁膜を貫通する請求項36に記載の半導体装置。
- 前記貫通電極は、前記第2層間絶縁膜を貫通しない請求項37に記載の半導体装置。
- 前記層間絶縁膜は、順に積層された第1層間絶縁膜及び第2層間絶縁膜を含み、前記貫通電極は、前記基板を貫通する請求項36に記載の半導体装置。
- 前記貫通電極は、前記第1及び第2層間絶縁膜を貫通しない請求項39に記載の半導体装置。
- 前記層間絶縁膜は、順に積層された第1層間絶縁膜及び第2層間絶縁膜を含み、前記貫通電極は、前記基板、前記第1層間絶縁膜、及び前記第2層間絶縁膜を貫通する請求項36に記載の半導体装置。
- 半導体基板及び前記半導体基板上の層間絶縁膜を含む半導体チップを含み、
前記半導体チップは、前記半導体チップの少なくとも一部を貫通するように垂直延長する貫通電極を含み、
前記貫通電極は、金属層及び前記金属層に隣接する合金層を含み、
前記合金層は、少なくとも2つの金属元素を含み、前記2つの金属元素の中で少なくとも1つは、前記金属層に含まれたものと異なる半導体装置。 - 前記合金層に含まれた金属元素の全てが、前記金属層に含まれた元素と異なる請求項42に記載の半導体装置。
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