JP4451488B2 - 半導体素子の転写方法及び半導体装置の製造方法 - Google Patents
半導体素子の転写方法及び半導体装置の製造方法 Download PDFInfo
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
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- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/26—Bombardment with radiation
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- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
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- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
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- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
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- H01L29/66409—Unipolar field-effect transistors
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- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
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Description
2 ソース領域
2a 低濃度不純物領域
3 ドレイン領域
3a 低濃度不純物領域
4 活性層
5 単結晶Siウェハ(半導体基板(A))
6 ゲート絶縁膜
7 ゲート電極
8 LOCOS膜
9 NSG膜
10 平坦化酸化膜
12 SiN膜
13 素子領域
14 サイドウォール
15 イオン注入層
20 デバイス基板
22 ソース電極
23 ドレイン電極
24 コンタクトホール
25 コンタクトホール
26 コンタクトホール
30 第1の仮の支持基板(仮の支持基板(C))
31 単結晶Siウェハ
32 熱酸化膜
40 トランジスタ基板
41 TEOS膜
50 第2の仮の支持基板(仮の支持基板(D))
51 単結晶Siウェハ
52 a−SiH層(層(a))
60 トランジスタ基板
60a トランジスタ基板
70 トランジスタ(半導体素子)
70a 単結晶Siトランジスタ(半導体素子)
80 TFT基板(基板(B))
81 絶縁基板(基板(B))
82 配線層
91 保護絶縁膜
92 金属配線層
100 半導体装置
Si−OH + Si−OH → Si−O−Si +H2O
が生じ、これら基板は、原子同士の結合により、より強固に接着(接合)する。
(1)トランジスタ70が転写された、第1の仮の支持基板である仮の支持基板(C)を、トランジスタ70を介して、本番基板である基板(B)と貼り合わせた後、転写元となる仮の支持基板(C)をエッチング除去する方法;
(2)トランジスタ70が転写された、第1の仮の支持基板である仮の支持基板(C)を、トランジスタ70を介して、第2の仮の支持基板である仮の支持基板(D)と貼り合わせた後、仮の支持基板(C)をエッチング除去することにより上記トランジスタ70を仮の支持基板(D)に転写し、その後、上記仮の支持基板(D)を、トランジスタ70を介して、本番基板である基板(B)と貼り合わせた後、仮の支持基板(D)をエッチング除去する方法;
(3)トランジスタ70が転写された、第1の仮の支持基板である仮の支持基板(C)を、トランジスタ70を介して、接着剤により、第2の仮の支持基板である仮の支持基板(D)と貼り合わせた後、仮の支持基板(C)をエッチング除去することにより上記トランジスタ70を仮の支持基板(D)に転写し、その後、上記仮の支持基板(D)を、トランジスタ70を介して、本番基板である基板(B)と貼り合わせた後、仮の支持基板(D)を、上記接着剤からなる層から剥離する方法;
(4)第1の仮の支持基板である仮の支持基板(C)を、a−SiH層や多孔質Si層等の、熱あるいはレーザ照射等の外力により組成が変化して結合力が低下する層(a)を設けた第2の仮の支持基板である仮の支持基板(D)と貼り合わせた後、仮の支持基板(C)をエッチング除去することにより上記トランジスタ70を上記仮の支持基板(D)に転写し、その後、仮の支持基板(D)を、本番基板である基板(B)と貼り合わせた後、上記仮の支持基板(D)を、上記a−SiH層や多孔質Si層等の層(a)から剥離する方法;
等が挙げられる。なお、上記トランジスタ70は、上記基板(B)に転写する前にチップ化する。
Claims (11)
- 半導体素子を形成した半導体基板(A)から、該半導体基板(A)における上記半導体素子を含む被転写層を、該半導体基板(A)に水素イオンまたは希ガスイオンを注入して熱処理することにより分離して、上記半導体素子をチップ化した後、該半導体素子を最終的に搭載する基板(B)に転写する半導体素子の転写方法であって、
上記半導体素子を形成した半導体基板(A)における上記被転写層の界面に、水素イオンまたは希ガスイオンを注入するイオン注入工程と、
上記半導体素子を形成した半導体基板(A)を、上記半導体素子を挟むように、上記分離によって上記半導体素子のトランジスタチャネル中に生じる結晶欠陥の回復温度以上の耐熱温度を有する仮の支持基板(C)と貼り合わせて熱処理して上記半導体基板(A)から上記被転写層を分離することにより、上記半導体素子を上記仮の支持基板(C)に転写する第1転写工程と、
上記半導体素子を転写した仮の支持基板(C)を、上記半導体素子のトランジスタチャネル中に生じた結晶欠陥の回復温度以上の温度で熱処理して、上記結晶欠陥を回復させる結晶欠陥回復工程と、
上記半導体素子を、チップ化して、上記第1転写工程とは異なる方法により、上記基板(B)に転写する最終転写工程と、を含むことを特徴とする半導体素子の転写方法。 - 上記結晶欠陥回復工程と最終転写工程との間に、
上記仮の支持基板(C)を、上記半導体素子を挟むように、水素化アモルファスシリコンまたは多孔質シリコンからなる層(a)を有する仮の支持基板(D)と貼り合わせ、上記仮の支持基板(C)をエッチング除去することにより、上記半導体素子を、少なくとも1回、仮の支持基板(D)に転写する再転写工程を含み、かつ、
上記最終転写工程では、
上記半導体素子を、上記仮の支持基板(D)に転写された状態でチップ化した後、このチップ化した仮の支持基板(D)を、上記半導体素子を挟むように、上記基板(B)と貼り合わせ、その後、上記仮の支持基板(D)を、上記層(a)を熱処理またはレーザ照射により除去して、チップ化した上記半導体素子を、上記基板(B)に転写することを特徴とする請求項1記載の半導体素子の転写方法。 - 上記結晶欠陥回復工程と最終転写工程との間に、
上記仮の支持基板(C)を、上記半導体素子を挟むように、表面に接着剤層を有する仮の支持基板(D)と貼り合わせ、上記仮の支持基板(C)をエッチング除去することにより、上記半導体素子を、少なくとも1回、上記仮の支持基板(D)に転写する再転写工程を含み、かつ、
上記最終転写工程では、
上記半導体素子を、上記仮の支持基板(D)に転写された状態でチップ化した後、このチップ化した仮の支持基板(D)を、上記半導体素子を挟むように、上記基板(B)と貼り合わせ、その後、上記仮の支持基板(D)を、上記接着剤層から剥離することで除去して、チップ化した上記半導体素子を、上記基板(B)に転写することを特徴とする請求項1記載の半導体素子の転写方法。 - 上記結晶欠陥回復工程と最終転写工程との間に、
上記仮の支持基板(C)を、上記半導体素子を挟むように、上記仮の支持基板(C)とは別の仮の支持基板(D)と貼り合わせ、上記仮の支持基板(C)をエッチング除去することにより、上記半導体素子を、少なくとも1回、上記仮の支持基板(D)に転写する再転写工程を含み、かつ、
上記最終転写工程では、
上記半導体素子を、上記仮の支持基板(D)に転写された状態でチップ化した後、このチップ化した仮の支持基板(D)を、上記半導体素子を挟むように、上記基板(B)と貼り合わせ、その後、上記仮の支持基板(D)をエッチング除去して、チップ化した上記半導体素子を、上記基板(B)に転写することを特徴とする請求項1記載の半導体素子の転写方法。 - 上記最終転写工程では、
上記半導体素子を、上記仮の支持基板(C)に転写された状態でチップ化した後、このチップ化した仮の支持基板(C)を、上記半導体素子を挟むように上記基板(B)と貼り合わせ、その後、上記仮の支持基板(C)をエッチング除去して、チップ化した上記半導体素子を、上記基板(B)に転写することを特徴とする請求項1記載の半導体素子の転写方法。 - 上記第1転写工程の前に、
上記半導体素子上に、シリコン酸化膜を成膜する工程を含むことを特徴とする請求項1記載の半導体素子の転写方法。 - 上記被転写層の転写面並びに上記転写によって該被転写層が貼り合わされる各基板の転写面の平坦度Rmsが0.5nm以下であり、かつ、うねりが30μm以下であることを特徴とする請求項1記載の半導体素子の転写方法。
- 上記結晶欠陥回復工程における熱処理温度が700℃以上、900℃以下であることを特徴とする請求項1記載の半導体素子の転写方法。
- 上記基板(B)の耐熱温度が、上記半導体素子のトランジスタチャネル中に生じる結晶欠陥の回復温度よりよりも低いことを特徴とする請求項1記載の半導体素子の転写方法。
- 上記半導体素子が、半導体トランジスタであることを特徴とする請求項1記載の半導体素子の転写方法。
- 半導体素子を形成した半導体基板(A)から、該半導体基板(A)における上記半導体素子を含む被転写層を、該半導体基板(A)に水素イオンまたは希ガスイオンを注入して熱処理することにより分離して、上記半導体素子をチップ化した後、該半導体素子を最終的に搭載する基板(B)に転写する半導体素子の転写方法によって、半導体素子を、半導体装置に使用される基板(B)に転写する工程を含み、
上記半導体素子の転写方法が、
上記半導体素子を形成した半導体基板(A)における上記被転写層の界面に、水素イオンまたは希ガスイオンを注入するイオン注入工程と、
上記半導体素子を形成した半導体基板(A)を、上記半導体素子を挟むように、上記分離によって上記半導体素子のトランジスタチャネル中に生じる結晶欠陥の回復温度以上の耐熱温度を有する仮の支持基板(C)と貼り合わせて熱処理して上記半導体基板(A)から上記被転写層を分離することにより、上記半導体素子を上記仮の支持基板(C)に転写する第1転写工程と、
上記半導体素子を転写した仮の支持基板(C)を、上記半導体素子のトランジスタチャネル中に生じた結晶欠陥の回復温度以上の温度で熱処理して、上記結晶欠陥を回復させる結晶欠陥回復工程と、
上記半導体素子を、チップ化して、上記第1転写工程とは異なる方法により、上記基板(B)に転写する最終転写工程と、を含むことを特徴とする半導体装置の製造方法。
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