JP2014042004A - 半導体装置及びその作製方法 - Google Patents
半導体装置及びその作製方法 Download PDFInfo
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- JP2014042004A JP2014042004A JP2013146057A JP2013146057A JP2014042004A JP 2014042004 A JP2014042004 A JP 2014042004A JP 2013146057 A JP2013146057 A JP 2013146057A JP 2013146057 A JP2013146057 A JP 2013146057A JP 2014042004 A JP2014042004 A JP 2014042004A
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- film
- insulating film
- oxide
- oxide semiconductor
- nitrogen
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 415
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 646
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 322
- 238000010438 heat treatment Methods 0.000 claims abstract description 110
- 238000001004 secondary ion mass spectrometry Methods 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 17
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims description 130
- 238000000034 method Methods 0.000 claims description 93
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- 238000012546 transfer Methods 0.000 abstract description 3
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- 230000001788 irregular Effects 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
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- 229910052697 platinum Inorganic materials 0.000 description 1
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- 238000005381 potential energy Methods 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- 238000002310 reflectometry Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005001 rutherford backscattering spectroscopy Methods 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
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- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】チャネル領域が形成される酸化物半導体膜を有するトランジスタ上に、窒素を有する酸化絶縁膜を形成した後、加熱処理を行って、窒素を有する酸化絶縁膜から窒素を放出させる。なお、加熱後の窒素を有する酸化絶縁膜において、二次イオン質量分析法により得られる窒素濃度が、二次イオン質量分析法の検出下限以上3×1020atoms/cm3未満である
【選択図】図1
Description
本実施の形態では、本発明の一態様である半導体装置、及びその作製方法について図面を参照して説明する。
本実施の形態では、酸化物半導体膜への窒素の移動を抑制すると共に、酸化物半導体膜の酸素欠損を低減することが可能なトランジスタ及び保護膜の構造について、図6を用いて説明する。なお、実施の形態1と重複する構成に関しては説明を省略する。
本実施の形態では、実施の形態1及び実施の形態4と異なる構造のトランジスタについて、図8を用いて説明する。本実施の形態に示すトランジスタ4は、酸化物半導体膜を介して対向する複数のゲート電極を有することを特徴とする。
本実施の形態では、実施の形態1及び実施の形態2と異なる構造のトランジスタについて、図9を用いて説明する。本実施の形態に示すトランジスタ5、6は、実施の形態1及び実施の形態2に示すトランジスタと比較して、トップゲート構造のトランジスタである点が異なる。
図11を用いて図9に示すトランジスタの変形例を説明する。
本実施の形態では、実施の形態4とは異なる窒素を有する酸化絶縁膜の構造について、図12を用いて説明する。
上記実施の形態で一例を示したトランジスタを用いて表示機能を有する半導体装置(表示装置ともいう。)を作製することができる。また、トランジスタを含む駆動回路の一部または全体を、画素部と同じ基板上に一体形成し、システムオンパネルを形成することができる。本実施の形態では、上記実施の形態で一例を示したトランジスタを用いた表示装置の例について、図13乃至図16を用いて説明する。なお、図14(A)、図14(B)及び図15は、図13(B)中でM−Nの一点鎖線で示した部位の断面構成を示す断面図である。なお、図14及び図15において、画素部の構造は一部のみ記載している。
実施の形態1乃至実施の形態6のいずれかに示したトランジスタを用いて、対象物の情報を読み取るイメージセンサ機能を有する半導体装置を作製することができる。
本明細書に開示する半導体装置は、さまざまな電子機器(遊技機も含む)に適用することができる。電子機器としては、テレビジョン装置(テレビ、またはテレビジョン受信機ともいう)、コンピュータ用などのモニタ、デジタルカメラ、デジタルビデオカメラ、デジタルフォトフレーム、携帯電話機、携帯型ゲーム機、携帯情報端末、音響再生装置、遊技機(パチンコ機、スロットマシン等)、ゲーム筐体が挙げられる。これらの電子機器の一例を図18に示す。
Claims (7)
- 基板上に設けられる酸化物半導体膜と、前記酸化物半導体膜とゲート絶縁膜を介して重なるゲート電極と、を有するトランジスタ上に、窒素を有する酸化絶縁膜を形成した後、加熱処理を行って、前記窒素を有する酸化絶縁膜から窒素を放出させることを特徴とする半導体装置の作製方法。
- 請求項1において、前記加熱処理温度が、150℃以上500℃以下であることを特徴とする半導体装置の作製方法。
- 請求項1または2において、前記加熱処理された窒素を有する酸化絶縁膜は、二次イオン質量分析法により得られる窒素濃度が、二次イオン質量分析法の検出下限以上3×1020atoms/cm3未満であることを特徴とする半導体装置の作製方法。
- 請求項1乃至3のいずれか一項において、前記窒素を有する酸化絶縁膜が、窒素を有する酸化シリコン膜であることを特徴とする半導体装置の作製方法。
- ゲート電極と、
前記ゲート電極の一部とゲート絶縁膜を介して重なる酸化物半導体膜と、
前記酸化物半導体膜に接する一対の電極と、
前記酸化物半導体膜上に設けられる窒素を有する酸化絶縁膜と、
を有し、
前記窒素を有する酸化絶縁膜は、二次イオン質量分析法により得られる窒素濃度が二次イオン質量分析法の検出下限以上3×1020atoms/cm3未満であることを特徴とする半導体装置。 - 請求項5において、前記酸化物半導体膜は、電子スピン共鳴測定によるg=1.93に現れる信号のスピン密度が1×1017spins/cm3以下であることを特徴とする半導体装置。
- 請求項5または6において、前記窒素を有する酸化絶縁膜は、窒素を有する酸化シリコン膜であることを特徴とする半導体装置。
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KR20140013952A (ko) | 2014-02-05 |
TWI600089B (zh) | 2017-09-21 |
KR102459661B1 (ko) | 2022-10-26 |
US9748355B2 (en) | 2017-08-29 |
US20140030845A1 (en) | 2014-01-30 |
KR20210032349A (ko) | 2021-03-24 |
KR102229585B1 (ko) | 2021-03-17 |
TW201409580A (zh) | 2014-03-01 |
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