JP5129228B2 - アレイ基板及びこれの製造方法 - Google Patents
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- JP5129228B2 JP5129228B2 JP2009291887A JP2009291887A JP5129228B2 JP 5129228 B2 JP5129228 B2 JP 5129228B2 JP 2009291887 A JP2009291887 A JP 2009291887A JP 2009291887 A JP2009291887 A JP 2009291887A JP 5129228 B2 JP5129228 B2 JP 5129228B2
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- 239000000758 substrate Substances 0.000 title claims description 73
- 238000004519 manufacturing process Methods 0.000 title claims description 26
- 239000010410 layer Substances 0.000 claims description 184
- 239000004065 semiconductor Substances 0.000 claims description 90
- 239000000463 material Substances 0.000 claims description 55
- 238000000034 method Methods 0.000 claims description 48
- 229920002120 photoresistant polymer Polymers 0.000 claims description 37
- 239000010936 titanium Substances 0.000 claims description 27
- 229910052751 metal Inorganic materials 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 26
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 20
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 19
- 229910052719 titanium Inorganic materials 0.000 claims description 19
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000011241 protective layer Substances 0.000 claims description 16
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 238000004544 sputter deposition Methods 0.000 claims description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000000059 patterning Methods 0.000 claims description 7
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052733 gallium Inorganic materials 0.000 claims description 5
- 229910052738 indium Inorganic materials 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 5
- KYKLWYKWCAYAJY-UHFFFAOYSA-N oxotin;zinc Chemical compound [Zn].[Sn]=O KYKLWYKWCAYAJY-UHFFFAOYSA-N 0.000 claims description 5
- 239000011787 zinc oxide Substances 0.000 claims description 5
- 238000004380 ashing Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 238000009832 plasma treatment Methods 0.000 claims description 3
- 238000001039 wet etching Methods 0.000 claims description 3
- 239000010409 thin film Substances 0.000 description 49
- 239000010408 film Substances 0.000 description 47
- 229910021417 amorphous silicon Inorganic materials 0.000 description 15
- 238000005530 etching Methods 0.000 description 14
- 239000012535 impurity Substances 0.000 description 12
- 238000001312 dry etching Methods 0.000 description 9
- 238000012986 modification Methods 0.000 description 9
- 230000004048 modification Effects 0.000 description 9
- 239000011810 insulating material Substances 0.000 description 8
- 238000000151 deposition Methods 0.000 description 7
- 239000007769 metal material Substances 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 229910004205 SiNX Inorganic materials 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 229960001296 zinc oxide Drugs 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- UMIVXZPTRXBADB-UHFFFAOYSA-N benzocyclobutene Chemical compound C1=CC=C2CCC2=C1 UMIVXZPTRXBADB-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005401 electroluminescence Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000004148 unit process Methods 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
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- H01L27/02—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
- 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
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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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- 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
- H01L27/124—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 layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
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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
- H01L27/1259—Multistep manufacturing methods
- H01L27/1288—Multistep manufacturing methods employing particular masking sequences or specially adapted masks, e.g. half-tone mask
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- 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
- H01L29/40—Electrodes ; 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
- 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
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- Condensed Matter Physics & Semiconductors (AREA)
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- Thin Film Transistor (AREA)
Description
108:ゲート電極
112:ゲート絶縁膜
119:酸化物半導体層
120:第2ダミーパターン
124:第1ダミーパターン
125:オーミックコンタクト層
126:(チタン)酸化膜
132:データ配線
135:ソース電極
138:ドレイン電極
P:画素領域
Tr:薄膜トランジスタ
TrA:スイッチング領域
Claims (9)
- 基板上に一方向に延長して形成されたゲート配線と前記ゲート配線と連結されて形成されたゲート電極と;
前記ゲート配線及びゲート電極上に形成されたゲート絶縁膜と;
前記ゲート絶縁膜上に前記ゲート電極に対応して形成された第1の厚さの酸化物半導体層と;
前記酸化物半導体層上に第2の厚さを有して形成された補助パターンと;
前記補助パターン上に前記補助パターンの中央部を露出させて互いに離隔して形成されたソース及びドレイン電極と;
前記ゲート絶縁膜上に前記ソース電極と連結されて前記ゲート配線と交差して形成されたデータ配線と;
前記ソース及びドレイン電極とデータ配線上に前記ドレイン電極を露出させるドレインコンタクトホールを具備して形成された保護層と;
前記保護層上に前記ドレインコンタクトホールを介して前記ドレイン電極と接触して形成された画素電極とを含み、
前記補助パターンは前記ソース及びドレイン電極と接触する第1領域と、前記ソース及びドレイン電極間に露出される中央部の第2領域に分けられて、前記第1領域はチタンまたはチタン合金で構成されてオーミックコンタクト層を形成して、前記第2領域は前記チタンまたはチタン合金が完全酸化されて絶縁特性を有するチタン酸化膜を形成していることを特徴とするアレイ基板。 - 前記酸化物半導体層はa−IGZO(amorphous-Indium Gallium Zinc Oxide)またはZTO(Zinc Tin Oxide)であることを特徴とする請求項1に記載のアレイ基板。
- 前記第1の厚さは500Åないし1000Åであって、前記第2の厚さは50Åないし500Åであることを特徴とする請求項1に記載のアレイ基板。
- 画素領域と前記画素領域内にスイッチング領域を有する基板上に、一方向に延長するゲート配線を形成して、前記スイッチング領域に前記ゲート配線と連結されたゲート電極を形成する段階と;
前記ゲート配線とゲート電極上に全面にゲート絶縁膜を形成する段階と;
前記ゲート絶縁膜上に前記画素領域の境界に前記ゲート配線と交差するデータ配線を形成して、前記スイッチング領域に前記ゲート絶縁膜上に順次積層された形態で第1厚さの酸化物半導体層と第2厚さを有してチタンまたはチタン合金で構成された補助パターンを形成して同時に前記補助パターン上に互いに離隔するソース及びドレイン電極を形成する段階と;
前記ソース及びドレイン電極間に露出された前記補助パターン部分を完全酸化させて絶縁特性を有するチタン酸化膜を形成する段階と;
前記チタン酸化膜とソース及びドレイン電極とデータ配線上に前記ドレイン電極を露出させるドレインコンタクトホールを有する保護層を形成する段階と;
前記保護層上に各画素領域に前記ドレインコンタクトホールを介して前記ドレイン電極と接触する画素電極を形成する段階
を含むことを特徴とするアレイ基板の製造方法。 - 前記データ配線と、順次積層された前記酸化物半導体層と補助パターンとソース及びドレイン電極を形成する段階は、
前記ゲート絶縁膜上に全面にスパッタリングを介して順次に酸化物半導体物質層と、チタンまたはチタン合金で構成された補助物質層と、金属層を形成する段階と;
前記第1金属層上に第3の厚さを有する第1フォトレジストパターンと、前記第3の厚さより薄い第4の厚さを有する第2フォトレジストパターンを形成する段階と;
前記第1及び第2フォトレジストパターンの外部に露出された前記金属層と、その下部の前記補助物質層と前記酸化物半導体物質層除去することによって前記ゲート絶縁膜上に前記データ配線を形成して、前記スイッチング領域に連結された状態のソースドレインパターンと、その下部に順次に前記補助パターンと前記酸化物半導体層を形成する段階と;
前記第2フォトレジストパターンを灰化を介して除去することによって前記ソースドレインパターンの中央部を露出させる段階と;
前記第2フォトレジストパターンが除去されることによって露出された前記ソースドレインパターンの中央部を湿式エッチングを行なって除去することによって互いに離隔するソース及びドレイン電極を形成し、前記補助パターンの中央部を露出させる段階と;
前記第1フォトレジストパターンを除去する段階
を含むことを特徴とする請求項4に記載のアレイ基板の製造方法。 - 前記データ配線と、順次積層された前記酸化物半導体層と補助パターンとソース及びドレイン電極を形成する段階は、
前記ゲート絶縁膜上に全面にスパッタリングを介して順次に酸化物半導体物質層と、チタンまたはチタン合金で構成された補助物質層を形成する段階と;
前記補助物質層とその下部の前記酸化物半導体物質層をパターニングして前記スイッチング領域に前記ゲート絶縁膜上に島状で順次積層された前記酸化物半導体層と補助パターンを形成する段階と;
前記補助パターン上に基板全面に金属層を形成する段階と;
前記金属層をパターニングして前記ゲート絶縁膜上に前記データ配線を形成して、前記スイッチング領域に前記補助パターン上に互いに離隔するソース及びドレイン電極を形成して前記補助パターンの中央部を露出させる段階
を含むことを特徴とする請求項4に記載のアレイ基板の製造方法。 - 前記補助パターン部分を完全酸化させて絶縁特性を有するチタン酸化膜を形成する段階は、
前記ソース及びドレイン電極間に前記補助パターンが露出された基板を酸素(O2)ガス雰囲気を有する真空のチャンバー内でプラズマ処理を実施する、または300℃ないし400℃温度雰囲気を有するオーブンまたは炉内で数十秒ないし数十分間熱処理を実施することを特徴とする請求項4に記載のアレイ基板の製造方法。 - 前記酸化物半導体層はa−IGZO(amorphous-Indium Gallium Zinc Oxide)またはZTO(Zinc Tin Oxide)で形成することを特徴とする請求項4に記載のアレイ基板の製造方法。
- 前記第1厚さは500Åないし1000Åであって、前記第2厚さは50Åないし500Åであることを特徴とする請求項4に記載のアレイ基板の製造方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020090049214A KR101213708B1 (ko) | 2009-06-03 | 2009-06-03 | 어레이 기판 및 이의 제조방법 |
KR10-2009-0049214 | 2009-06-03 |
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JP2010283326A JP2010283326A (ja) | 2010-12-16 |
JP5129228B2 true JP5129228B2 (ja) | 2013-01-30 |
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US9530896B2 (en) | 2014-03-17 | 2016-12-27 | Japan Display Inc. | Display device using an oxide semiconductor |
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KR20100130490A (ko) | 2010-12-13 |
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US20100308324A1 (en) | 2010-12-09 |
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