JP5185447B2 - アクティブマトリクス基板、製造方法、及び表示装置 - Google Patents
アクティブマトリクス基板、製造方法、及び表示装置 Download PDFInfo
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- 239000000758 substrate Substances 0.000 title claims abstract description 119
- 239000011159 matrix material Substances 0.000 title claims abstract description 107
- 238000004519 manufacturing process Methods 0.000 title claims description 47
- 239000010408 film Substances 0.000 claims abstract description 194
- 239000010410 layer Substances 0.000 claims abstract description 188
- 229910052751 metal Inorganic materials 0.000 claims abstract description 137
- 239000002184 metal Substances 0.000 claims abstract description 137
- 239000011241 protective layer Substances 0.000 claims abstract description 63
- 239000010409 thin film Substances 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 58
- 239000010936 titanium Substances 0.000 claims description 58
- 229910052719 titanium Inorganic materials 0.000 claims description 58
- 239000010407 anodic oxide Substances 0.000 claims description 33
- 239000010955 niobium Substances 0.000 claims description 16
- 229910052758 niobium Inorganic materials 0.000 claims description 16
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 16
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 19
- 239000004065 semiconductor Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 10
- 238000007743 anodising Methods 0.000 description 7
- 229910021417 amorphous silicon Inorganic materials 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 5
- 238000004380 ashing Methods 0.000 description 4
- 239000002585 base Substances 0.000 description 3
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- 239000012535 impurity Substances 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 229910000484 niobium oxide Inorganic materials 0.000 description 3
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 3
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- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 2
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
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- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
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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
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- 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
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- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
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- 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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- 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
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- 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
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Description
前記基材上には、前記薄膜トランジスタのドレイン電極と、前記画素電極とを接続する金属膜と、前記金属膜を覆うように形成された保護層と、前記保護層上に形成された絶縁層とが設けられ、
前記保護層及び前記絶縁層には、前記画素電極と前記金属膜とを接続するコンタクトホール部の接触孔が設けられ、
前記コンタクトホール部では、前記金属膜に対して、陽極酸化を行うことにより、前記保護層の接触孔を充填するように、かつ、端部が前記絶縁層の下方に設けられるように、陽極酸化膜が当該金属膜上に形成され、
前記コンタクトホール部では、前記陽極酸化膜を介在させて前記画素電極と前記金属膜とが接続されていることを特徴とするものである。
前記補助容量用電極として、前記金属膜の端部が用いられていることが好ましい。
前記陽極酸化膜には、チタンまたはニオブの陽極酸化膜が含まれていることが好ましい。
前記基材上に、前記薄膜トランジスタのドレイン電極と、前記画素電極とを接続する金属膜を形成する金属膜形成工程と、
前記金属膜を覆うように、保護層を形成する保護層形成工程と、
前記画素電極と前記金属膜とを接続するコンタクトホール部の接触孔が設けられるように、前記保護層上に絶縁層を形成する絶縁層形成工程と、
前記絶縁層をマスクとして、前記保護層に対し、前記コンタクトホール部の接触孔を形成する接触孔形成工程と、
前記保護層に形成された前記接触孔の内部に露出した前記金属膜に対して、陽極酸化を行うことにより、前記保護層の接触孔を充填するように、かつ、端部が前記絶縁層の下方に設けられるように、当該金属膜上に陽極酸化膜を形成する陽極酸化膜形成工程と、
前記コンタクトホール部において、前記陽極酸化膜を介在させて前記画素電極と前記金属膜とを接続する接続工程とを具備していることを特徴とするものである。
前記陽極酸化膜には、チタンまたはニオブの陽極酸化膜が含まれていることが好ましい。
5 アクティブマトリクス基板
5a 基材
18 薄膜トランジスタ
18d ドレイン電極
19 画素電極
21 3層構造金属膜(金属膜)
25a チタン層
25b アルミニウム層
25c チタン層
22 補助容量用電極
27 保護層
28 絶縁層
Claims (9)
- 薄膜トランジスタ及び前記薄膜トランジスタに接続された画素電極を有する画素がマトリクス状に設けられるとともに、マトリクス状の前記画素が形成される基材を備えたアクティブマトリクス基板であって、
前記基材上には、前記薄膜トランジスタのドレイン電極と、前記画素電極とを接続する金属膜と、前記金属膜を覆うように形成された保護層と、前記保護層上に形成された絶縁層とが設けられ、
前記保護層及び前記絶縁層には、前記画素電極と前記金属膜とを接続するコンタクトホール部の接触孔が設けられ、
前記コンタクトホール部では、前記金属膜に対して、陽極酸化を行うことにより、前記保護層の接触孔を充填するように、かつ、端部が前記絶縁層の下方に設けられるように、陽極酸化膜が当該金属膜上に形成され、
前記コンタクトホール部では、前記陽極酸化膜を介在させて前記画素電極と前記金属膜とが接続されている、
ことを特徴とするアクティブマトリクス基板。 - 前記ドレイン電極として、前記金属膜の端部が用いられている請求項1に記載のアクティブマトリクス基板。
- 前記基材上には、前記画素毎に設けられるとともに、補助容量を発生させるための補助容量用電極が設けられ、
前記補助容量用電極として、前記金属膜の端部が用いられている請求項1に記載のアクティブマトリクス基板。 - 前記金属膜には、チタンまたはニオブが含まれるとともに、
前記陽極酸化膜には、チタンまたはニオブの陽極酸化膜が含まれている請求項1〜3のいずれか1項に記載のアクティブマトリクス基板。 - 請求項1〜4のいずれか1項に記載のアクティブマトリクス基板を用いたことを特徴とする表示装置。
- 薄膜トランジスタ及び前記薄膜トランジスタに接続された画素電極を有する画素がマトリクス状に設けられるとともに、マトリクス状の前記画素が形成される基材を備えたアクティブマトリクス基板の製造方法であって、
前記基材上に、前記薄膜トランジスタのドレイン電極と、前記画素電極とを接続する金属膜を形成する金属膜形成工程と、
前記金属膜を覆うように、保護層を形成する保護層形成工程と、
前記画素電極と前記金属膜とを接続するコンタクトホール部の接触孔が設けられるように、前記保護層上に絶縁層を形成する絶縁層形成工程と、
前記絶縁層をマスクとして、前記保護層に対し、前記コンタクトホール部の接触孔を形成する接触孔形成工程と、
前記保護層に形成された前記接触孔の内部に露出した前記金属膜に対して、陽極酸化を行うことにより、前記保護層の接触孔を充填するように、かつ、端部が前記絶縁層の下方に設けられるように、当該金属膜上に陽極酸化膜を形成する陽極酸化膜形成工程と、
前記コンタクトホール部において、前記陽極酸化膜を介在させて前記画素電極と前記金属膜とを接続する接続工程と
を具備していることを特徴とするアクティブマトリクス基板の製造方法。 - 前記金属膜形成工程では、前記金属膜の端部が前記ドレイン電極として形成されている請求項6に記載のアクティブマトリクス基板の製造方法。
- 前記金属膜形成工程では、前記金属膜の端部が前記画素毎に設けられて、補助容量を発生させるための補助容量用電極として形成されている請求項6に記載のアクティブマトリクス基板の製造方法。
- 前記金属膜には、チタンまたはニオブが含まれるとともに、
前記陽極酸化膜には、チタンまたはニオブの陽極酸化膜が含まれている請求項6〜8のいずれか1項に記載のアクティブマトリクス基板の製造方法。
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JP6402914B2 (ja) * | 2013-11-29 | 2018-10-10 | 日亜化学工業株式会社 | 発光装置の製造方法 |
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KR100796756B1 (ko) | 2001-11-12 | 2008-01-22 | 삼성전자주식회사 | 반도체 소자의 접촉부 및 그 제조 방법과 이를 포함하는표시 장치용 박막 트랜지스터 어레이 기판 및 그 제조 방법 |
WO2005086180A1 (ja) * | 2004-03-09 | 2005-09-15 | Idemitsu Kosan Co., Ltd. | 薄膜トランジスタ及び薄膜トランジスタ基板及びこれらの製造方法及びこれらを用いた液晶表示装置及び関連する装置及び方法、並びに、スパッタリングターゲット及びこれを用いて成膜した透明導電膜及び透明電極及び関連する装置及び方法 |
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US20120235149A1 (en) | 2012-09-20 |
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