JP2015501549A - 薄膜トランジスターアレイ基板 - Google Patents
薄膜トランジスターアレイ基板 Download PDFInfo
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- 239000000758 substrate Substances 0.000 title claims abstract description 90
- 239000010409 thin film Substances 0.000 title claims abstract description 44
- 239000010410 layer Substances 0.000 claims abstract description 234
- 239000004065 semiconductor Substances 0.000 claims abstract description 139
- 239000011241 protective layer Substances 0.000 claims abstract description 91
- 239000002131 composite material Substances 0.000 claims abstract description 36
- 239000011810 insulating material Substances 0.000 claims abstract description 30
- 239000001301 oxygen Substances 0.000 claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000005530 etching Methods 0.000 claims description 96
- 230000004888 barrier function Effects 0.000 claims description 75
- 239000000463 material Substances 0.000 claims description 15
- 229910044991 metal oxide Inorganic materials 0.000 claims description 15
- 150000004706 metal oxides Chemical class 0.000 claims description 15
- 238000002161 passivation Methods 0.000 claims description 11
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 6
- 150000004767 nitrides Chemical class 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims 3
- 238000000034 method Methods 0.000 description 39
- 230000008569 process Effects 0.000 description 34
- 238000001259 photo etching Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 11
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- 239000002184 metal Substances 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000001312 dry etching Methods 0.000 description 5
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 5
- 238000004544 sputter deposition Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- -1 oxygen ions Chemical class 0.000 description 4
- 239000010408 film Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 229910007541 Zn O Inorganic materials 0.000 description 2
- 239000002894 chemical waste Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- 229910004205 SiNX Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000002165 photosensitisation Effects 0.000 description 1
- 239000003504 photosensitizing agent Substances 0.000 description 1
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- 239000012495 reaction gas Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
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- 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
- H01L29/78693—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 the semiconducting oxide being amorphous
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/4908—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET for thin film semiconductor, e.g. gate of TFT
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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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- H01L27/12—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
- 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
- H01L27/1222—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 with a particular composition, shape or crystalline structure of the active layer
- H01L27/1225—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 with a particular composition, shape or crystalline structure of the active layer with semiconductor materials not belonging to the group IV of the periodic table, e.g. InGaZnO
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- 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
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- 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
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- H01L29/772—Field effect transistors
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
- H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
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Abstract
Description
図2(a)−(f)は本発明の実施例2に係るTFTアレイ基板の構造概略図である。
図1(f)に示すように、本実施例において、TFTアレイ基板は、基底基板1と、基底基板1に形成されるゲート電極2と、ゲート電極2を覆い、且つ前記基底基板1上までに延長されるゲート絶縁層3と、ゲート絶縁層3を覆うゲート絶縁保護層4と、ゲート絶縁保護層4上に形成される半導体層5と、半導体層5上に形成され、それらの間にチャネル15が形成されるソース電極8及びドレイン電極9と、前記チャネル15に形成され、エッチングバリア保護層6とエッチングバリア絶縁層7を有する複合層構造と(前記エッチングバリア保護層6がエッチングバリア絶縁層7の下方に配され且つ半導体層5に接触される)、ソース電極8、エッチングバリア絶縁層7、ドレイン電極9及びゲート絶縁保護層4を覆い、ドレイン電極9を覆う部分に通孔12が開かれる不動態化層10と、不動態化層10に形成され、通孔12を介してドレイン電極9と接続される透明画素電極11と、を備える。
図2(f)に示すように、本実施例において、TFTアレイ基板は、基底基板1と、基底基板1上を覆う修飾絶縁層14と、修飾絶縁層14上を覆う修飾絶縁保護層13と、修飾絶縁保護層13上に形成される半導体層5と、半導体層5上に形成され、それらの間にチャネル15が設けられるソース電極8及びドレイン電極9と、チャネル15に形成され、エッチングバリア絶縁層7の下方に配され、且つ半導体層5に接触されるエッチングバリア保護層6、及びエッチングバリア絶縁層7を有する複合層構造と、ソース電極8、エッチングバリア絶縁層7、ドレイン電極9及び修飾絶縁保護層13を完全に覆い、ドレイン電極9を覆う部分に通孔12が開かされるゲート絶縁層3と、ゲート絶縁層3に形成され、通孔12を介してドレイン電極9に接続される透明画素電極11と、を備える。
2 ゲート電極
3 ゲート絶縁層
4 ゲート絶縁保護層
5 半導体層
6 エッチングバリア保護層
7 エッチングバリア絶縁層
8 ソース電極
9 ドレイン電極
10 不動態化層
11 透明画素電極
12 通孔
13 修飾絶縁保護層
14 修飾絶縁層
15 チャネル
Claims (15)
- 基底基板(1)、並びにスイッチ素子としてのゲート電極(2)、半導体層(5)、半導体保護層、ソース電極(8)及びドレイン電極(9)を有する薄膜トランジスター、を備える薄膜トランジスター(TFT)アレイ基板であって、
前記半導体保護層は前記半導体層(5)と隣り合い、前記半導体保護層は複合層構造を備え、前記複合層構造は前記半導体層(5)の酸素ロスを避ける絶縁材料により製作される前記半導体層(5)に接触する保護層、及びエッチングし易い絶縁材料により製作される絶縁層を備える、薄膜トランジスターアレイ基板。 - 前記ゲート電極(2)が前記基底基板(1)上に配され、前記半導体層(5)が前記ゲート電極(2)上に配されることを特徴とする請求項1に記載のTFTアレイ基板。
- 前記半導体保護層は前記ゲート電極(2)と前記半導体層(5)との間に配され、且つ前記半導体層(5)の下側に隣り合うゲート絶縁複合層構造を備え、前記ゲート絶縁複合層構造は前記半導体層(5)の酸素ロスを避ける絶縁材料により製作され、前記半導体層(5)に接触するゲート絶縁保護層(4)と、エッチングし易い絶縁材料により製作されるゲート絶縁層(3)と、を備えることを特徴とする請求項2に記載のTFTアレイ基板。
- 前記ソース電極(8)と前記ドレイン電極(9)とは前記半導体層(5)上に配され、それらの間にチャネル(15)が設けられることを特徴とする請求項2又は3に記載のTFTアレイ基板。
- 前記半導体保護層は前記チャネル(15)に配され、且つ半導体層(5)の上側に隣り合うエッチングバリア複合層構造を備え、前記エッチングバリア複合層構造は前記半導体層(5)の酸素ロスを避ける絶縁材料により製作され、前記半導体層(5)に接触するエッチングバリア保護層(6)と、エッチングし易い絶縁材料により製作されるエッチングバリア絶縁層(7)と、を備えることを特徴とする請求項2〜4のいずれか一項に記載のTFTアレイ基板。
- 前記半導体層(5)は前記基底基板(1)上に配され、前記ゲート電極(2)が前記半導体層(5)上に配されることを特徴とする請求項1に記載のTFTアレイ基板。
- 前記半導体保護層(5)は前記基底基板(1)と前記半導体層(5)との間に配され、且つ前記半導体層(5)の下側に隣り合う修飾絶縁複合層構造を備え、前記修飾絶縁複合構造は前記半導体層(5)の酸素ロスを避ける絶縁材料により製作され、前記半導体層(5)に接触する修飾絶縁保護層(13)と、エッチングし易い絶縁材料により製作される修飾絶縁層(14)と、を備えることを特徴とする請求項6に記載のTFTアレイ基板。
- 前記ソース電極(8)と前記ドレイン電極(9)が前記半導体層(5)上に配され、且つそれらの間にチャネル(15)が設けられることを特徴とする請求項6又は7に記載のTFTアレイ基板。
- 前記半導体保護層は前記チャネル(15)に配され、且つ半導体層(5)の上側に隣り合うエッチングバリア複合層構造を備え、前記エッチングバリア複合層構造は前記半導体層(5)の酸素ロスを避ける絶縁材料により製作され、前記半導体層(5)に接触するエッチングバリア保護層(6)と、エッチングし易い絶縁材料により製作されるエッチングバリア絶縁層(7)と、を備えることを特徴とする請求項6〜8のいずれか一項に記載のTFTアレイ基板。
- 前記半導体層(5)が金属酸化物半導体材料により形成されることを特徴とする請求項1〜9のいずれか一項に記載のTFTアレイ基板。
- 前記保護層と前記絶縁層との厚さ比は1/10〜3/5であることを特徴とする請求項1〜10のいずれか一項に記載のTFTアレイ基板。
- 前記保護層の厚さ範囲は300Å〜1500Åであり、前記絶縁層の厚さ範囲は1000Å〜20000Åであることを特徴とする請求項11に記載のTFTアレイ基板。
- 前記エッチングバリア保護層(6)は窒素酸化物又は金属酸化物により製作され、前記エッチングバリア絶縁層(7)は窒化物又は有機絶縁材料により製作されることを特徴とする請求項1〜12のいずれか一項に記載のTFTアレイ基板。
- 前記保護層はSiOx又はAl2O3により製作され、前記絶縁層はSiNx又は有機樹脂により製作されることを特徴とする請求項1〜13のいずれか一項に記載のTFTアレイ基板。
- 不動態化層(10)と透明画素電極(11)とを備えることを特徴とする請求項1〜14のいずれか一項に記載のTFTアレイ基板。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201110344454.7A CN102646676B (zh) | 2011-11-03 | 2011-11-03 | 一种tft阵列基板 |
CN201110344454.7 | 2011-11-03 | ||
PCT/CN2012/080382 WO2013063971A1 (zh) | 2011-11-03 | 2012-08-20 | 薄膜晶体管阵列基板 |
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JP2015501549A true JP2015501549A (ja) | 2015-01-15 |
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US (1) | US9263594B2 (ja) |
EP (1) | EP2779249B1 (ja) |
JP (1) | JP2015501549A (ja) |
KR (1) | KR101456354B1 (ja) |
CN (1) | CN102646676B (ja) |
WO (1) | WO2013063971A1 (ja) |
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