JP2021036567A - 半導体装置 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 178
- 230000007704 transition Effects 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 27
- 230000009977 dual effect Effects 0.000 claims description 7
- 150000002500 ions Chemical class 0.000 claims description 4
- 239000010409 thin film Substances 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 107
- 108091006146 Channels Proteins 0.000 description 63
- 238000004519 manufacturing process Methods 0.000 description 28
- 229910052751 metal Inorganic materials 0.000 description 20
- 239000002184 metal Substances 0.000 description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- 239000001301 oxygen Substances 0.000 description 14
- 239000000969 carrier Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000005530 etching Methods 0.000 description 7
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- 238000005468 ion implantation Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 102000004129 N-Type Calcium Channels Human genes 0.000 description 1
- 108090000699 N-Type Calcium Channels Proteins 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/7869—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising an oxide semiconductor material, e.g. zinc oxide, copper aluminium oxide, cadmium stannate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0684—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by the shape, relative sizes or dispositions of the semiconductor regions or junctions between the regions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66969—Multistep manufacturing processes of devices having semiconductor bodies not comprising group 14 or group 13/15 materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/78606—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device
- H01L29/78618—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device characterised by the drain or the source properties, e.g. the doping structure, the composition, the sectional shape or the contact structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/78645—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with multiple gate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/78696—Thin film transistors, i.e. transistors with a channel being at least partly a thin film characterised by the structure of the channel, e.g. multichannel, transverse or longitudinal shape, length or width, doping structure, or the overlap or alignment between the channel and the gate, the source or the drain, or the contacting structure of the channel
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
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- Manufacturing & Machinery (AREA)
- Thin Film Transistor (AREA)
Abstract
Description
Claims (17)
- 酸化物半導体によるTFTを有する半導体装置であって、
前記酸化物半導体は、チャネル領域、ソース領域、ドレイン領域と、前記チャネル領域と前記ソース領域、及び、前記チャネル領域と前記ドレイン領域の間に遷移領域を有し、
前記遷移領域の抵抗率は、前記チャネル領域の抵抗率よりも小さく、前記ソース領域あるいは前記ドレイン領域の抵抗率よりも大きく、
ソース電極は前記ソース領域と重複して形成され、ドレイン電極は前記ドレイン領域と重複して形成され、
前記酸化物半導体の前記遷移領域の厚さは、前記チャネル領域の厚さよりも大きいことを特徴とする半導体装置。 - 前記酸化物半導体の、前記ソース領域の厚さあるいは前記ドレイン領域の厚さは、前記遷移領域の厚さよりも大きいことを特徴とする請求項1に記載の半導体装置。
- 前記酸化物半導体において、前記チャネル領域の中央で測定した場合、前記チャネル領域の厚さは60nm以下であり、前記遷移領域の中央で測定した場合の前記遷移領域の厚さは85nm以上であることを特徴とする請求項1または2に記載の半導体装置。
- 前記酸化物半導体の、前記ソース領域の厚さあるいは前記ドレイン領域の厚さと、前記遷移領域の厚さの差は10nm以上であることを特徴とする請求項2に記載の半導体装置。
- 前記遷移領域の前記チャネル領域のチャネル長方法の長さは2μm以上であることを特徴とする請求項1乃至4に記載の半導体装置。
- 前記TFTはボトムゲートタイプであることを特徴とする請求項1に記載の半導体装置。
- 前記TFTはボトムゲートとトップゲートを有するデュアルゲートタイプであることを特徴とする請求項1に記載の半導体装置。
- 前記酸化物半導体を覆って第1のゲート絶縁膜が形成され、前記第1のゲート絶縁膜を覆って第2のゲート絶縁膜が形成され、
前記第2のゲート絶縁膜には、前記遷移領域に対応する部分にスルーホールが形成され、
前記第2のゲート絶縁膜と前記スルーホールを覆ってゲート電極が形成されていることを特徴とする請求項1に記載の半導体装置。 - 前記遷移領域には、導電率を上げるイオンがドープされていることを特徴とする請求項1に記載の半導体装置。
- 酸化物半導体によるTFTを有する半導体装置であって、
前記酸化物半導体は、チャネル領域、ソース領域、ドレイン領域と、前記チャネル領域と前記ソース領域、及び、前記チャネル領域と前記ドレイン領域の間に遷移領域を有し、
前記遷移領域の抵抗率は、前記チャネル領域の抵抗率よりも小さく、前記ソース領域あるいは前記ドレイン領域の抵抗率よりも大きく、
ソース電極は前記ソース領域と重複して形成され、ドレイン電極は前記ドレイン領域と重複して形成され、
前記酸化物半導体を覆って第1のゲート絶縁膜が形成され、前記第1のゲート絶縁膜を覆って第2のゲート絶縁膜が形成され、
前記第2のゲート絶縁膜には、前記遷移領域に対応する部分にスルーホールが形成され、
前記第2のゲート絶縁膜と前記スルーホールを覆って第1のゲート電極が形成されていることを特徴とする半導体装置。 - 前記チャネル領域の厚さは60nm以下であることを特徴とする請求項10に記載の半導体装置。
- 前記遷移領域のチャネル長方向の長さは2μm以上であることを特徴とする請求項10に記載の半導体装置。
- 前記酸化物半導体の下には、第3のゲート絶縁膜が存在し、前記第3のゲート絶縁膜の下には、第2のゲート電極が存在することを特徴とする請求項10に記載の半導体装置。
- 酸化物半導体によるTFTを有する半導体装置であって、
前記酸化物半導体は、チャネル領域、ソース領域、ドレイン領域と、前記チャネル領域と前記ソース領域、及び、前記チャネル領域と前記ドレイン領域の間に遷移領域を有し、
前記遷移領域の抵抗率は、前記チャネル領域の抵抗率よりも小さく、前記ソース領域あるいは前記ドレイン領域の抵抗率よりも大きく、
ソース電極は前記ソース領域と重複して形成され、ドレイン電極は前記ドレイン領域と重複して形成され、
前記チャネル領域の中央部分の厚さは60nm以下であり、前記遷移領域には、導電率を上げるためのイオンがドープされていることを特徴とする半導体装置。 - 前記遷移領域のチャネル長方向の長さは2μm以上であることを特徴とする請求項14に記載の半導体装置。
- 前記TFTはボトムゲートタイプであることを特徴とする請求項14に記載の半導体装置。
- 前記TFTはボトムゲートとトップゲートを有するデュアルゲートタイプであことを特徴とする請求項14に記載の半導体装置。
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JP2019158096A JP7201556B2 (ja) | 2019-08-30 | 2019-08-30 | 半導体装置 |
PCT/JP2020/029286 WO2021039268A1 (ja) | 2019-08-30 | 2020-07-30 | 半導体装置 |
CN202080056742.XA CN114258595A (zh) | 2019-08-30 | 2020-07-30 | 半导体器件 |
US17/579,740 US20220149203A1 (en) | 2019-08-30 | 2022-01-20 | Semiconductor device |
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JP2012178439A (ja) * | 2011-02-25 | 2012-09-13 | Nippon Hoso Kyokai <Nhk> | 半導体デバイス及びその製造方法 |
WO2015186602A1 (ja) * | 2014-06-03 | 2015-12-10 | シャープ株式会社 | 半導体装置およびその製造方法 |
WO2019025917A1 (ja) * | 2017-08-04 | 2019-02-07 | 株式会社半導体エネルギー研究所 | 半導体装置、及び表示装置 |
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US6337232B1 (en) * | 1995-06-07 | 2002-01-08 | Semiconductor Energy Laboratory Co., Ltd. | Method of fabrication of a crystalline silicon thin film semiconductor with a thin channel region |
JP3904512B2 (ja) * | 2002-12-24 | 2007-04-11 | シャープ株式会社 | 半導体装置およびその製造方法、並びに半導体装置を備えた電子機器 |
US7297977B2 (en) * | 2004-03-12 | 2007-11-20 | Hewlett-Packard Development Company, L.P. | Semiconductor device |
KR101014473B1 (ko) * | 2006-06-02 | 2011-02-14 | 가시오게산키 가부시키가이샤 | 산화아연의 산화물 반도체 박막층을 포함하는 반도체 장치및 그 제조방법 |
US8581260B2 (en) * | 2007-02-22 | 2013-11-12 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device including a memory |
JP5244364B2 (ja) * | 2007-10-16 | 2013-07-24 | 株式会社半導体エネルギー研究所 | 半導体装置及びその作製方法 |
JP5704790B2 (ja) * | 2008-05-07 | 2015-04-22 | キヤノン株式会社 | 薄膜トランジスタ、および、表示装置 |
US8541781B2 (en) * | 2011-03-10 | 2013-09-24 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and method for manufacturing the same |
JP2015023080A (ja) * | 2013-07-17 | 2015-02-02 | ソニー株式会社 | 放射線撮像装置および放射線撮像表示システム |
US9590109B2 (en) * | 2013-08-30 | 2017-03-07 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and method for manufacturing the same |
JP6851166B2 (ja) * | 2015-10-12 | 2021-03-31 | 株式会社半導体エネルギー研究所 | 半導体装置の作製方法 |
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JP2012178439A (ja) * | 2011-02-25 | 2012-09-13 | Nippon Hoso Kyokai <Nhk> | 半導体デバイス及びその製造方法 |
WO2015186602A1 (ja) * | 2014-06-03 | 2015-12-10 | シャープ株式会社 | 半導体装置およびその製造方法 |
US20170200827A1 (en) * | 2014-06-03 | 2017-07-13 | Sharp Kabushiki Kaisha | Semiconductor device and method for manufacturing same |
WO2019025917A1 (ja) * | 2017-08-04 | 2019-02-07 | 株式会社半導体エネルギー研究所 | 半導体装置、及び表示装置 |
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