JP2007081362A - 透明薄膜トランジスタ及びその製造方法 - Google Patents
透明薄膜トランジスタ及びその製造方法 Download PDFInfo
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- 239000010409 thin film Substances 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 155
- 239000004065 semiconductor Substances 0.000 claims abstract description 106
- 239000000758 substrate Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 31
- 150000004767 nitrides Chemical class 0.000 claims abstract description 21
- 238000000059 patterning Methods 0.000 claims abstract description 19
- 239000011229 interlayer Substances 0.000 claims abstract description 18
- 229910002704 AlGaN Inorganic materials 0.000 claims description 7
- 229910007717 ZnSnO Inorganic materials 0.000 claims description 7
- 229910003460 diamond Inorganic materials 0.000 claims description 7
- 239000010432 diamond Substances 0.000 claims description 7
- 238000004544 sputter deposition Methods 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 14
- 239000012780 transparent material Substances 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 description 21
- 239000002184 metal Substances 0.000 description 21
- 239000010408 film Substances 0.000 description 8
- 239000011810 insulating material Substances 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 5
- 239000011787 zinc oxide Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000001747 exhibiting effect Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 229910021417 amorphous silicon Inorganic materials 0.000 description 3
- 238000000231 atomic layer deposition Methods 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 3
- 230000002040 relaxant effect Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000001451 molecular beam epitaxy Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- -1 ITO Chemical class 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- TYHJXGDMRRJCRY-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) tin(4+) Chemical compound [O-2].[Zn+2].[Sn+4].[In+3] TYHJXGDMRRJCRY-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/78681—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising AIIIBV or AIIBVI or AIVBVI semiconductor materials, or Se or Te
Abstract
【解決手段】基板と、基板上に酸化物、窒化物及び炭化物系列物質のいずれかを塗布してパタニングにより形成された透明半導体層と、透明半導体層上に形成されたゲート絶縁層と、ゲート絶縁層上に、透明半導体層と対応するように形成されたゲート電極と、ゲート電極上に形成された層間絶縁層と、層間絶縁層及びゲート絶縁層に形成されたコンタクトホールを介して透明半導体層と電気的に連結されるソース/ドレイン電極とを含む。
【選択図】図1
Description
100、200... 基板、
110、230... 透明半導体層、
120、220...ゲート絶縁層、
130、210...ゲート電極、
150a、150b、240a、240b...ソース/ドレイン電極、
Claims (16)
- 基板と、
前記基板上に酸化物、窒化物及び炭化物系列物質のいずれかを塗布してパタニングにより形成された透明半導体層と、
前記透明半導体層上に形成されたゲート絶縁層と、
前記ゲート絶縁層上に、前記透明半導体層と対応するように形成されたゲート電極と、
前記ゲート電極上に形成された層間絶縁層と、
前記層間絶縁層及び前記ゲート絶縁層に形成されたコンタクトホールを介して前記透明半導体層と電気的に連結されるソース/ドレイン電極
とを含むことを特徴とする透明薄膜トランジスタ。 - 前記透明半導体層は、バンドギャップが3.0eVより大きい広帯域半導体物質を利用することを特徴とする請求項1に記載の透明薄膜トランジスタ。
- 前記透明半導体層に利用される半導体物質は、酸化物系列のZnO、ZnSnO、CdSnO、GaSnO、TlSnO、 InGaZnO、CuAlO、SrCuO及びLaCuOSのいずれかで構成されることを特徴とする請求項2に記載の透明薄膜トランジスタ。
- 前記透明半導体層に利用される半導体物質は、窒化物系列のGaN、InGaN、AlGaN及びInGaAlNのいずれかで構成されることを特徴とする請求項2に記載の透明薄膜トランジスタ。
- 前記透明半導体層に利用される半導体物質は、炭化物系列のSiC及びダイヤモンドのいずれかで構成されることを特徴とする請求項2に記載の透明薄膜トランジスタ。
- 前記透明半導体層は、300Å〜700Åの厚さの範囲で形成されることを特徴とする請求項1に記載の透明薄膜トランジスタ。
- 基板と、
前記基板上にパタニングにより形成されたゲート電極と、
前記ゲート電極と前記基板上に形成されたゲート絶縁層と、
前記ゲート絶縁層上に酸化物、窒化物及び炭化物系列物質のいずれかを塗布してパタニングにより形成された透明半導体層と、
前記透明半導体層上に、前記透明半導体層の一領域が露出されるように形成されたソース/ドレイン電極
とを含むことを特徴とする透明薄膜トランジスタ。 - 前記透明半導体層は、バンドギャップが3.0eVより大きい広帯域半導体物質を利用することを特徴とする請求項7に記載の透明薄膜トランジスタ。
- 前記透明半導体層に利用される半導体物質は、酸化物系列のZnO、ZnSnO、CdSnO、GaSnO、TlSnO、 InGaZnO、CuAlO、SrCuO及びLaCuOSのいずれかで構成されることを特徴とする請求項8に記載の透明薄膜トランジスタ。
- 前記透明半導体層に利用される半導体物質は、窒化物系列のGaN、InGaN、AlGaN及びInGaAlNのいずれかで構成されることを特徴とする請求項8に記載の透明薄膜トランジスタ。
- 前記透明半導体層に利用される半導体物質は、炭化物系列のSiC及びダイヤモンドのいずれかで構成されることを特徴とする請求項8に記載の透明薄膜トランジスタ。
- 前記透明半導体層は、300Å〜700Åの厚さの範囲で形成されることを特徴とする請求項7に記載の透明薄膜トランジスタ。
- 基板上に酸化物、窒化物及び炭化物系列物質のいずれかを塗布した後、パタニングにより透明半導体層を形成する工程と、
前記透明半導体層上にゲート絶縁層を形成する工程と、
前記ゲート絶縁層上に、前記透明半導体層と対応するようにゲート電極をパタニングにより形成する工程と、
前記ゲート電極上に層間絶縁層を形成する工程と、
前記層間絶縁層と前記ゲート絶縁層を貫通するコンタクトホールを形成した後、透明電極を烝着してソース電極及びドレイン電極をパタニングにより形成する工程
とを含むことを特徴とする透明薄膜トランジスタの製造方法。 - 前記透明半導体層を塗布する工程で、PLD、ALD、CVD、スパッタ及びMBE法の中のいずれかを利用することを特徴とする請求項13に記載の透明薄膜トランジスタの製造方法。
- 基板上にパタニングによりゲート電極を形成する工程と、
前記ゲート電極上にゲート絶縁層を形成する工程と、
前記ゲート絶縁層上に酸化物、窒化物及び炭化物系列物質のいずれかを塗布した後、パタニングにより透明半導体層を形成する工程と、
前記透明半導体層上にソース/ドレイン電極をパタニングにより形成する工程
とを含むことを特徴とする透明薄膜トランジスタの製造方法。 - 前記透明半導体層を塗布する工程で、PLD、ALD、CVD、スパッタ及びMBE法の中のいずれかを利用することを特徴とする請求項15に記載の透明薄膜トランジスタの製造方法。
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EP (1) | EP1764839A2 (ja) |
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