JP2016025272A - 表示装置 - Google Patents
表示装置 Download PDFInfo
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- JP2016025272A JP2016025272A JP2014149668A JP2014149668A JP2016025272A JP 2016025272 A JP2016025272 A JP 2016025272A JP 2014149668 A JP2014149668 A JP 2014149668A JP 2014149668 A JP2014149668 A JP 2014149668A JP 2016025272 A JP2016025272 A JP 2016025272A
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- 239000010408 film Substances 0.000 claims abstract description 135
- 239000004065 semiconductor Substances 0.000 claims abstract description 134
- 239000010409 thin film Substances 0.000 claims abstract description 103
- 239000004973 liquid crystal related substance Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 12
- 230000005684 electric field Effects 0.000 claims description 5
- 229910052738 indium Inorganic materials 0.000 claims description 4
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 4
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
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- 235000019407 octafluorocyclobutane Nutrition 0.000 description 2
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- 229910052760 oxygen Inorganic materials 0.000 description 2
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- 238000005268 plasma chemical vapour deposition Methods 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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- 238000004544 sputter deposition Methods 0.000 description 2
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
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- 239000010937 tungsten Substances 0.000 description 2
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
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- 229910007717 ZnSnO Inorganic materials 0.000 description 1
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- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
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- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
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- 239000000356 contaminant Substances 0.000 description 1
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- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 229910001195 gallium oxide Inorganic materials 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
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- BCCOBQSFUDVTJQ-UHFFFAOYSA-N octafluorocyclobutane Chemical compound FC1(F)C(F)(F)C(F)(F)C1(F)F BCCOBQSFUDVTJQ-UHFFFAOYSA-N 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
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- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- KYKLWYKWCAYAJY-UHFFFAOYSA-N oxotin;zinc Chemical compound [Zn].[Sn]=O KYKLWYKWCAYAJY-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
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- 238000005549 size reduction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- 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
- H01L27/1218—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 or structure of the substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- 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
- 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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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/24—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only semiconductor materials not provided for in groups H01L29/16, H01L29/18, H01L29/20, H01L29/22
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- 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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- 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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- G—PHYSICS
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- 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
- G02F1/1362—Active matrix addressed cells
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
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- G—PHYSICS
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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
- G02F1/1362—Active matrix addressed cells
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
- G02F1/13685—Top gates
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- 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
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- Thin Film Transistor (AREA)
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- Electrodes Of Semiconductors (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Abstract
Description
図1に示すように、表示装置1は、画像を表示するアクティブエリア(表示領域)ACTと、アクティブエリアACTの外側の額縁領域(非表示領域)と、を備えている。表示装置1は、液晶表示パネルPLNを備えている。液晶表示パネルPLNは、アレイ基板ARや、後述する対向基板及び液晶層を備えている。アクティブエリアACTにおいて、アレイ基板ARは、n本のゲート線G(G1〜Gn)、n本の補助容量線C(C1〜Cn)、m本のソース線S(S1〜Sm)、及びm×n個のマトリクス状の画素PXを備えている。各画素PXは、隣合う2本のゲート線Gと隣合う2本のソース線Sとによって区画されている。
図1に示した第1薄膜トランジスタTR1及び第2薄膜トランジスタTR2の少なくとも一方の薄膜トランジスタは、図2に示す薄膜トランジスタTRで形成されている。本実施形態において、上述した第1薄膜トランジスタTR1及び第2薄膜トランジスタTR2の両方とも薄膜トランジスタTRで形成されている。
ここでは、第1チャネル領域12Cは、第1絶縁膜14が重畳した重畳領域である。第1領域12A及び第2領域12Bは、第1絶縁膜14から外れた非重畳領域である。第1領域12A及び第2領域12Bの還元性元素濃度は、第1チャネル領域12Cの還元性元素濃度より高い。
図3に示すように、横軸x1は、ゲート電圧Vgを示している。左の縦軸y1は、ドレイン電流Id(対数表記)を示している。右の縦軸y2は、ドレイン電流Id(線形表記)を示している。グラフA1及びグラフA2は、本実施形態の薄膜トランジスタTRのドレイン電流Id−ゲート電圧Vgの特性を示している。これらのグラフは、第1チャネル領域12Cの第1チャネル長L1と第2チャネル領域18Cの第2チャネル長L2の比を5:3として、薄膜トランジスタTRの性能をシミュレーションした結果である。グラフB1及びグラフB2は、比較例の薄膜トランジスタのドレイン電流Id−ゲート電圧Vgの特性を示している。この比較例の薄膜トランジスタは、本実施形態の構成から第1半導体層12の構成するトップゲート型薄膜トランジスタ構造を除いた薄膜トランジスタである。グラフA1及びグラフB1は、ゲート電圧Vgに対するドレイン電流Id(対数表記)のプロットを示しており、値は縦軸y1に従う。また、グラフA2及びグラフB2はゲート電圧Vgに対するドレイン電流Id(線形表記)のプロットを示しており、値は縦軸y2に従う。
図4に示すように、薄膜トランジスタTRの製造が開始されると、まず、第1絶縁基板10の上に、スパッタリング法などを用いて、例えばIGZOなどの酸化物半導体膜を成膜する。その後、この酸化物半導体膜を島状にパターニングして、第1酸化物半導体層CO1が形成される。
図8に示すように、液晶表示パネルPLNは、FFS(Fringe Field Switching)方式を採っている。しかし、本発明における液晶表示パネルの駆動方式は、特に限定されるものではなく種々変形可能であり、FFS方式以外のIPS(In−Plane Switching)方式、TN(Twist Nematic)方式、VA(Vartical Alignment)方式等でもよい。このような液晶表示パネルPLNは、アレイ基板ARの他、対向基板CT及び液晶層LQを備えている。
第3絶縁膜22は、第2絶縁膜16、第2チャネル領域18C、低抵抗配線20A、及び低抵抗配線20Bの上に形成されている。第3絶縁膜22は、第2チャネル領域18Cを酸化・還元物質から保護するために形成される。従って、第3絶縁膜22は、例えば酸素や一酸化炭素などの、酸化性物質や還元性物質の透過率が低い材料が好適に用いられる。
共通電極CEは、第4絶縁膜24の上の、開口部APに対応する領域に形成されている。
第1配向膜AL1は、第5絶縁膜26及び画素電極PEの上に形成されている。
第2絶縁基板30は、ガラス、樹脂等の光透過性及び絶縁性を有する材料によって形成されている。
以上説明したように、本実施形態によれば、特性ばらつき及び占有面積の小さい薄膜トランジスタを備えた表示装置を得ることができる。
上述した薄膜トランジスタTRは、表示装置以外の半導体装置に適用可能であり、例えば、各種メモリ、又は各種センサに適用可能である。
Claims (9)
- 第1領域と、第2領域と、前記第1領域と前記第2領域との間に位置した第1チャネル領域と、を有する第1半導体層と、
前記第1半導体層の第1チャネル領域の上に形成された第1絶縁膜と、
前記第1絶縁膜の上に形成され前記第1チャネル領域と対向したゲート電極と、
前記ゲート電極の上に形成された第2絶縁膜と、
前記第2絶縁膜の上に形成され、前記第1半導体層に対向し、前記第1領域に電気的に接続された第3領域と、前記第2領域に電気的に接続された第4領域と、前記第3領域と前記第4領域との間に位置し前記ゲート電極と対向した第2チャネル領域と、を有する第2半導体層と、
前記第2半導体層の上方に位置し、前記第3領域に接した第1電極と、
前記第2半導体層の上方に位置し、前記第1電極に間隔を置き、前記第4領域に接した第2電極と、を具備した薄膜トランジスタを備え、
互いに対向する前記ゲート電極の底面と前記第1チャネル領域の天面との間隔は、互いに対向する前記ゲート電極の天面と前記第2チャネル領域の底面との間隔より大きい表示装置。 - 第1領域と、第2領域と、前記第1領域と前記第2領域との間に位置した第1チャネル領域と、を有する第1半導体層と、
前記第1半導体層の第1チャネル領域の上に形成された第1絶縁膜と、
前記第1絶縁膜の上に形成され前記第1チャネル領域と対向したゲート電極と、
前記ゲート電極の上に形成された第2絶縁膜と、
前記第2絶縁膜の上に形成され、前記第1半導体層に対向し、前記第1領域に電気的に接続された第3領域と、前記第2領域に電気的に接続された第4領域と、前記第3領域と前記第4領域との間に位置し前記ゲート電極と対向した第2チャネル領域と、を有する第2半導体層と、
前記第2半導体層の上方に位置し、前記第3領域に接した第1電極と、
前記第2半導体層の上方に位置し、前記第1電極に間隔を置き、前記第4領域に接した第2電極と、を具備した薄膜トランジスタを備え、
前記ゲート電極は、前記第1チャネル領域と対向した底面と、前記第2チャネル領域と対向し前記底面の面積より小さい面積を有した天面と、を備え、順テーパ状に形成されている表示装置。 - 互いに対向する前記ゲート電極の底面と前記第1チャネル領域の天面との間隔は、互いに対向する前記ゲート電極の天面と前記第2チャネル領域の底面との間隔以上である請求項2に記載の表示装置。
- 前記第1半導体層及び第2半導体層は、インジウム、ガリウム、及び亜鉛の何れか一つを少なくとも含む酸化物材料で形成されている請求項1乃至3の何れか1項に記載の表示装置。
- 前記第1チャネル領域は前記第1絶縁膜が重畳した重畳領域であり、
前記第1領域及び第2領域は前記第1絶縁膜から外れた非重畳領域であり、
前記第1領域及び第2領域の還元性元素濃度は、前記第1チャネル領域の還元性元素濃度より高い請求項4に記載の表示装置。 - 前記第1電極及び第2電極の上に形成された第3絶縁膜と、
前記第3絶縁膜の上に形成された共通電極と、
前記共通電極の上に形成された第4絶縁膜と、
前記第4絶縁膜の上に形成され前記共通電極と対向し前記第2電極に電気的に接続された画素電極と、をさらに備える請求項1乃至5の何れか1項に記載の表示装置。 - 前記第2半導体層と同一レベルの層にて前記第2半導体層と同一材料で一体的に形成された画素電極と、
前記第1電極、第2電極及び画素電極の上に形成された第3絶縁膜と、
前記第3絶縁膜の上に形成され、前記画素電極と対向した共通電極と、をさらに備える請求項1乃至5の何れか1項に記載の表示装置。 - 前記第1半導体層と同一レベルの層にて前記第1半導体層と同一材料で形成され、前記第1半導体層に間隔を置いて位置した共通電極と、
前記第2絶縁膜を挟んで前記共通電極と対向し、前記第2半導体層と同一レベルの層にて前記第2半導体層と同一材料で一体的に形成された画素電極と、をさらに備える請求項1乃至5の何れか1項に記載の表示装置。 - 前記共通電極と前記画素電極との間に生じる電界が与えられる液晶層をさらに備える請求項6乃至8の何れか1項に記載の表示装置。
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0595116A (ja) * | 1991-10-01 | 1993-04-16 | Nec Corp | 半導体装置及びその製造方法 |
JP2007298976A (ja) * | 2006-04-06 | 2007-11-15 | Semiconductor Energy Lab Co Ltd | 液晶表示装置及び半導体装置、並びに電子機器 |
JP2012104566A (ja) * | 2010-11-08 | 2012-05-31 | Toshiba Mobile Display Co Ltd | 薄膜トランジスタ回路基板及びその製造方法 |
JP2012129307A (ja) * | 2010-12-14 | 2012-07-05 | Sharp Corp | 表示素子の製造方法 |
JP2013145878A (ja) * | 2011-12-14 | 2013-07-25 | Semiconductor Energy Lab Co Ltd | 半導体装置、及び当該半導体装置を用いた表示装置 |
JP2014103142A (ja) * | 2012-11-16 | 2014-06-05 | Semiconductor Energy Lab Co Ltd | 半導体装置及び表示装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070002933A (ko) * | 2005-06-30 | 2007-01-05 | 엘지.필립스 엘시디 주식회사 | 폴리 박막 트랜지스터 기판 및 그 제조 방법 |
EP2924498A1 (en) * | 2006-04-06 | 2015-09-30 | Semiconductor Energy Laboratory Co, Ltd. | Liquid crystal desplay device, semiconductor device, and electronic appliance |
KR20110037220A (ko) | 2009-10-06 | 2011-04-13 | 삼성모바일디스플레이주식회사 | 박막 트랜지스터, 그의 제조 방법 및 박막 트랜지스터를 구비하는 유기전계발광 표시 장치 |
KR101155903B1 (ko) * | 2010-03-09 | 2012-06-21 | 삼성모바일디스플레이주식회사 | 유기 발광 표시 장치 및 이의 제조 방법 |
JP5380387B2 (ja) * | 2010-07-22 | 2014-01-08 | 株式会社ジャパンディスプレイ | 液晶表示装置 |
CN103081108B (zh) * | 2010-09-09 | 2016-08-03 | 夏普株式会社 | 薄膜晶体管基板及其制造方法、显示装置 |
US8946066B2 (en) * | 2011-05-11 | 2015-02-03 | Semiconductor Energy Laboratory Co., Ltd. | Method of manufacturing semiconductor device |
KR102001056B1 (ko) * | 2012-07-26 | 2019-07-17 | 엘지디스플레이 주식회사 | 산화물 박막트랜지스터를 포함하는 어레이 기판 및 그 제조방법 |
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2014
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- 2015-07-20 KR KR1020150102446A patent/KR20160012082A/ko not_active Application Discontinuation
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0595116A (ja) * | 1991-10-01 | 1993-04-16 | Nec Corp | 半導体装置及びその製造方法 |
JP2007298976A (ja) * | 2006-04-06 | 2007-11-15 | Semiconductor Energy Lab Co Ltd | 液晶表示装置及び半導体装置、並びに電子機器 |
JP2012104566A (ja) * | 2010-11-08 | 2012-05-31 | Toshiba Mobile Display Co Ltd | 薄膜トランジスタ回路基板及びその製造方法 |
JP2012129307A (ja) * | 2010-12-14 | 2012-07-05 | Sharp Corp | 表示素子の製造方法 |
JP2013145878A (ja) * | 2011-12-14 | 2013-07-25 | Semiconductor Energy Lab Co Ltd | 半導体装置、及び当該半導体装置を用いた表示装置 |
JP2014103142A (ja) * | 2012-11-16 | 2014-06-05 | Semiconductor Energy Lab Co Ltd | 半導体装置及び表示装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024176386A1 (ja) * | 2023-02-22 | 2024-08-29 | シャープディスプレイテクノロジー株式会社 | 薄膜トランジスタ及び表示装置 |
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