JP2016133702A - 表示装置 - Google Patents
表示装置 Download PDFInfo
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- JP2016133702A JP2016133702A JP2015009212A JP2015009212A JP2016133702A JP 2016133702 A JP2016133702 A JP 2016133702A JP 2015009212 A JP2015009212 A JP 2015009212A JP 2015009212 A JP2015009212 A JP 2015009212A JP 2016133702 A JP2016133702 A JP 2016133702A
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- 239000004065 semiconductor Substances 0.000 claims abstract description 152
- 239000010409 thin film Substances 0.000 claims abstract description 77
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract 5
- 239000010408 film Substances 0.000 description 99
- 239000010410 layer Substances 0.000 description 72
- 239000003990 capacitor Substances 0.000 description 48
- 101100214488 Solanum lycopersicum TFT2 gene Proteins 0.000 description 40
- 239000000758 substrate Substances 0.000 description 13
- 101100489584 Solanum lycopersicum TFT1 gene Proteins 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 239000002784 hot electron Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009751 slip forming Methods 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
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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
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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
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- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
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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
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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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- 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
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
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- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
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- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
Description
の通りである。
本発明の第1の実施形態にかかる有機EL表示装置は、アレイ基板SUB(図3参照)と、アレイ基板SUBに対向する対向基板と、アレイ基板SUBに接続されるフレキシブル回路基板と、ドライバ集積回路とを含む。対向基板にカラーフィルタが設けられ、カラーフィルタと白色OLED(Organic Light Emitting Diode)との組合せによりフルカラー表示が実現される。白色OLEDの代わりにRGB等のそれぞれの色を発光する発光素子を用いる場合には、対向基板およびカラーフィルタは存在しなくてもよい。
次に本発明の第2の実施形態にかかる有機EL表示装置について説明する。以下では第2の実施形態にかかる有機EL表示装置のうち、第1の実施形態と異なる部分を中心に説明する。
次に本発明の第3の実施形態にかかる有機EL表示装置について説明する。本実施形態ではチャネル領域にホールアキュムレーション抑制のための構造が設けられている。以下では第3の実施形態にかかる有機EL表示装置のうち、第1の実施形態と異なる部分を中心に説明する。
Claims (21)
- マトリクス状に配置された複数の画素のそれぞれに設けられた、前記画素の輝度を調整する電流又は電圧を制御するための薄膜トランジスタを有し、
前記薄膜トランジスタは、半導体層と、前記半導体層の下に設けられた第1絶縁層と、前記半導体層の上に設けられた第2絶縁層と、前記半導体層に間隔をあけて対向するゲート電極と、を有し、
前記半導体層は、ソース領域及びドレイン領域と、前記ソース領域と前記ドレイン領域の間にあるチャネル領域と、を含み、
前記ゲート電極は、前記第1絶縁層を介して前記半導体層に下方で対向する第1ゲート電極部と、前記第2絶縁層を介して前記半導体層に上方で対向する第2ゲート電極部と、前記ソース領域と前記ドレイン領域との間の方向に直交する方向で前記半導体層に側方で対向して前記第1ゲート電極部及び前記第2ゲート電極部に接続する第3ゲート電極部と、を含み、
前記第1絶縁層及び前記第2絶縁層は、前記半導体層の周囲に相互に積層する積層部を有し、
前記第1絶縁層及び前記第2絶縁層の前記積層部の一部が、前記半導体層と前記第3ゲート電極部との間に介在する、
ことを特徴とする表示装置。 - 前記半導体層は、前記ソース領域と前記ドレイン領域との間の方向に、前記第1ゲート電極部及び前記第2ゲート電極部から突出し、
前記半導体層が前記第1ゲート電極部から突出する第1位置と、前記半導体層が前記第2ゲート電極部から突出する第2位置とは、ずれている、
ことを特徴とする請求項1に記載の表示装置。 - 前記第1ゲート電極部は、前記第2ゲート電極部の全体に対向する形状を超える大きさを有し、
前記第1位置は、前記第2位置よりも、前記ソース領域と前記ドレイン領域との間の方向で外側にある、
ことを特徴とする請求項2に記載の表示装置。 - 前記第2ゲート電極部は、前記第1ゲート電極部の全体に対向する形状を超える大きさを有し、
前記第2位置は、前記第1位置よりも、前記ソース領域と前記ドレイン領域との間の方向で外側にある、
ことを特徴とする請求項2に記載の表示装置。 - 前記半導体層の前記チャネル領域は、前記第1ゲート電極部及び前記第2ゲート電極部の両方が対向する重畳対向領域と、前記第1ゲート電極部及び前記第2ゲート電極部の一方のみが対向する片側対向領域と、を含み、
前記片側対向領域は、前記重畳対向領域の、前記ソース領域と前記ドレイン領域との間の方向の両側にある、
ことを特徴とする請求項1に記載の表示装置。 - 前記第1ゲート電極部及び前記第2ゲート電極部の一方は、前記ソース領域と前記ドレイン領域との間の方向に、前記半導体層と対向する領域が途切れるように、切り欠きを有する、
ことを特徴とする請求項1から5のいずれかに記載の表示装置。 - 前記切り欠きに入る配線をさらに有し、
前記配線は、前記半導体層の上面又は下面のうち、前記切り欠きを有する前記第1ゲート電極部又は前記第2ゲート電極部に対向する側で、前記半導体層に電気的に接続する、
ことを特徴とする請求項6に記載の表示装置。 - 前記配線は、前記ソース領域及び前記ドレイン領域の一方にさらに電気的に接続する、
ことを特徴とする請求項7に記載の表示装置。 - 前記第1絶縁層及び前記第2絶縁層は、前記ソース領域と前記ドレイン領域との間の方向に、前記半導体層に沿って長く延びる形状で前記積層部を貫通するコンタクトホールを有し、
前記第3ゲート電極部は、コンタクトホール内に設けられる、
ことを特徴とする請求項1から8のいずれかに記載の表示装置。 - 前記第1ゲート電極部は、前記第1絶縁層及び前記第2絶縁層から露出するように突出する突出領域を有するように設けられ、
前記第3ゲート電極部は、前記突出領域で前記第1ゲート電極部に接続する、
ことを特徴とする請求項1から8のいずれかに記載の表示装置。 - 前記第1絶縁層及び前記第2絶縁層は、前記第3ゲート電極部の前記半導体層とは反対側を避けて設けられる、
ことを特徴とする請求項1から8のいずれかに記載の表示装置。 - 前記ソース領域と前記ドレイン領域との間の方向で、前記3ゲート電極部の両端が、前記第1ゲート電極部及び前記第2ゲート電極部の両端の内側にある、
ことを特徴とする請求項1から11のいずれかに記載の表示装置。 - 前記第1ゲート電極部は、前記半導体層と対向する第1領域を有し、
前記第2ゲート電極部は、前記半導体層と対向する第2領域を有し、
前記第3ゲート電極部は、前記半導体層と対向する第3領域を有し、
前記ソース領域と前記ドレイン領域との間の方向で、前記第3領域の両端が、前記第1領域及び前記第2領域の両端の内側にある、
ことを特徴とする請求項12に記載の表示装置。 - 前記第1ゲート電極部は、前記半導体層と対向する第1領域を有し、
前記第2ゲート電極部は、前記半導体層と対向する第2領域を有し、
前記ソース領域と前記ドレイン領域との間の方向で、前記コンタクトホールの両端が、前記第1領域及び前記第2領域の一方の両端の外側にあって、他方の両端の内側にある、
ことを特徴とする請求項9に記載の表示装置。 - 前記第3ゲート電極部は、前記半導体層の両側に対向する、
ことを特徴とする請求項1から14のいずれかに記載の表示装置。 - 前記第3ゲート電極部は、前記半導体層の片側のみに対向する、
ことを特徴とする請求項1から14のいずれかに記載の表示装置。 - 前記第3ゲート電極部は、前記ソース領域と前記ドレイン領域との間の方向に、断続的に設けられる、
ことを特徴とする請求項1から16のいずれかに記載の表示装置。 - 前記第3ゲート電極部は、前記ソース領域と前記ドレイン領域との間の方向に、連続的に設けられる、
ことを特徴とする請求項1から16のいずれかに記載の表示装置。 - 前記半導体層は、前記ソース領域と前記ドレイン領域との間の前記方向に交差する方向に分岐する分岐半導体層を有し、
前記分岐半導体層は、前記チャネル領域から分岐する分岐チャネル領域を含む、
ことを特徴とする請求項1から18のいずれかに記載の表示装置。 - 前記第1ゲート電極部及び前記第2ゲート電極部の少なくとも一方は、前記分岐半導体層に対向するように分岐する分岐ゲート電極部を有する、
ことを特徴とする請求項19に記載の表示装置。 - 前記分岐チャネル領域の端部は、前記ソース領域と前記ドレイン領域のうち一方と電気的に接続される、
ことを特徴とする請求項19または20に記載の表示装置。
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