JP6872483B2 - 薄膜トランジスタとその製造方法、及びアレイ基板 - Google Patents
薄膜トランジスタとその製造方法、及びアレイ基板 Download PDFInfo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 59
- 239000002041 carbon nanotube Substances 0.000 claims description 58
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 58
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- 150000004706 metal oxides Chemical class 0.000 claims description 33
- 229910052751 metal Inorganic materials 0.000 claims description 30
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- 229910052727 yttrium Inorganic materials 0.000 claims description 12
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
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- 230000001590 oxidative effect Effects 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- OFIYHXOOOISSDN-UHFFFAOYSA-N tellanylidenegallium Chemical compound [Te]=[Ga] OFIYHXOOOISSDN-UHFFFAOYSA-N 0.000 description 18
- 230000007704 transition Effects 0.000 description 12
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- 239000003960 organic solvent Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
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- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000000432 density-gradient centrifugation Methods 0.000 description 1
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Description
本出願は、2016年3月1日に提出した中国特許出願No.201610115020.2の優先権を主張し、その内容が全て本出願に援用される。
上記実施形態のいくつかにおいて、金属層の厚みは、5nm〜1000nmに範囲にあってよく、20nm〜100nmの範囲にあることが好ましい。
第3の方面において、本開示は上記の任意の実施形態による薄膜トランジスタを少なくともひとつ含むアレイ基板をさらに提供する。
以下の説明及び添付の図面から他の実施形態も明らかとなろう。
S102:複数のカーボンナノチューブを含む活性層のパターンを形成する。
S104:少なくとも薄膜トランジスタのソース電極とドレイン電極の間の活性層の領域を覆うように構成された金属酸化物層のパターンを形成する。
この方法の第一の実施形態では、蒸着プロセスにより金属酸化物層のパターンを形成することができ、この際、薄膜トランジスタのソース電極とドレイン電極の間の活性層の全部領域に対して蒸着プロセスを行い金属酸化物層のパターンを形成する。
方法(2)については、形成される金属層の厚みを5nm〜1000nmの範囲に制御することができ、より優れた薄膜トランジスタの特性と性能を得るために20nm〜100nmの範囲に制御するのが好ましい。
なお、開示する実施形態において、トランジスタの性能を改善し、よりよく保護するために工程(4)と工程(5)を3度繰り返してもよい。工程を繰り返すか否かについて制限はなく、実際の必要に応じて行えばよい。
上記の方法は、カーボンナノチューブ薄膜トランジスタの通常の製造に影響せず、製造工程の難度を増加するものではない。さらに、チャネルの酸素からの分離に起因する二極性を防止し、カーボンナノチューブボトムゲートトランジスタのキャリア移動度をさらに改善する。
Claims (7)
- 活性層内に複数のカーボンナノチューブを備える薄膜トランジスタの製造方法であって、
少なくとも薄膜トランジスタのソース電極とドレイン電極の間の活性層のチャネル領域を実質的に覆う絶縁層を形成する工程を含み、前記絶縁層は、環境から実質的に絶縁され、前記活性層内の前記複数のカーボンナノチューブへの影響が十分に小さくなるように構成され、
前記絶縁層が金属酸化物を含み、
少なくとも前記薄膜トランジスタのソース電極とドレイン電極の間の前記活性層のチャネル領域を実質的に覆う絶縁層を形成する工程が、少なくとも前記ソース電極と前記ドレイン電極の間の前記活性層の前記チャネル領域を実質的に覆う金属層を形成する工程と、前記金属層を酸化させて金属酸化物層を形成する工程と、を少なくとも1ラウンド含み、
前記金属層を酸化させて金属酸化物層を形成する工程が紫外線酸化(UVO)プロセスにより行われ、
前記金属層の厚みが5nm〜1000nmの範囲にあり、
前記金属層を酸化させて金属酸化物層を形成する工程が酸素中で行われる、薄膜トランジスタの製造方法。 - 前記金属酸化物はイットリウム酸化物又はアルミナの少なくともひとつを含む、請求項1に記載の薄膜トランジスタの製造方法。
- 少なくとも前記ソース電極と前記ドレイン電極の間の前記活性層の前記チャネル領域を実質的に覆う金属層を形成する工程が電子ビームコーティングプロセスにより行われる、請求項1に記載の薄膜トランジスタの製造方法。
- 前記金属層がイットリウムを含む、請求項1に記載の薄膜トランジスタの製造方法。
- 前記金属層の厚みが20nm〜100nmの範囲にある、請求項1に記載の薄膜トランジスタの製造方法。
- 少なくとも前記薄膜トランジスタの前記ソース電極と前記ドレイン電極の間の前記活性層のチャネル領域を実質的に覆う金属酸化物層を形成する工程を3ラウンド含む、請求項1に記載の薄膜トランジスタの製造方法。
- 前記複数のカーボンナノチューブは単層カーボンナノチューブ、二層カーボンナノチューブ又はカーボンナノチューブバンドルの少なくとも一つを含む、請求項1に記載の薄膜トランジスタの製造方法。
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CN201610115020.2A CN105679676A (zh) | 2016-03-01 | 2016-03-01 | 薄膜晶体管及其制备方法、阵列基板 |
CN201610115020.2 | 2016-03-01 | ||
PCT/CN2016/104884 WO2017148176A1 (en) | 2016-03-01 | 2016-11-07 | Thin-film transistor, manufacturing method, and array substrate |
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CN109427976B (zh) | 2017-08-31 | 2021-04-23 | 京东方科技集团股份有限公司 | 薄膜晶体管及其制备方法、阵列基板和显示装置 |
CN107993981B (zh) * | 2017-11-22 | 2020-11-06 | 深圳市华星光电半导体显示技术有限公司 | Tft基板及其制造方法 |
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KR100988081B1 (ko) * | 2003-04-23 | 2010-10-18 | 삼성전자주식회사 | 이종방식으로 형성된 중간 산화막을 구비하는 자기 램 및그 제조 방법 |
JP2006049459A (ja) * | 2004-08-03 | 2006-02-16 | Fujitsu Ltd | カーボンナノチューブトランジスタの製造方法 |
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CN105679676A (zh) * | 2016-03-01 | 2016-06-15 | 京东方科技集团股份有限公司 | 薄膜晶体管及其制备方法、阵列基板 |
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- 2016-11-07 US US15/542,408 patent/US10490760B2/en active Active
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JP2019507489A (ja) | 2019-03-14 |
EP3424071A4 (en) | 2019-12-04 |
US20180375045A1 (en) | 2018-12-27 |
US10490760B2 (en) | 2019-11-26 |
WO2017148176A1 (en) | 2017-09-08 |
CN105679676A (zh) | 2016-06-15 |
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