JP7237171B2 - 透明導電性フィルム - Google Patents
透明導電性フィルム Download PDFInfo
- Publication number
- JP7237171B2 JP7237171B2 JP2021545485A JP2021545485A JP7237171B2 JP 7237171 B2 JP7237171 B2 JP 7237171B2 JP 2021545485 A JP2021545485 A JP 2021545485A JP 2021545485 A JP2021545485 A JP 2021545485A JP 7237171 B2 JP7237171 B2 JP 7237171B2
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- light
- conductive layer
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- film
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Images
Classifications
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
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- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
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- C23C14/0021—Reactive sputtering or evaporation
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/58—After-treatment
- C23C14/5873—Removal of material
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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
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
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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
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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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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Description
透明な樹脂フィルムとしての長尺のシクロオレフィンポリマー(COP)フィルム(商品名「ゼオノア」,厚さ40μm,ゼオン社製)の一方の面に、アクリル樹脂を含有する紫外線硬化性樹脂組成物を塗布して塗膜を形成した。次に、紫外線照射によって当該塗膜を硬化させてハードコート層(厚さ1μm)を形成した。次に、ハードコート層上に、屈折率調整層形成用の紫外線硬化性樹脂組成物(ジルコニア粒子含有の複合樹脂組成物)を塗布して塗膜を形成した。次に、紫外線照射によって当該塗膜を硬化させて、ハードコート層上に屈折率調整層(厚さ90nm,屈折率1.62)を形成した。このようにして、樹脂フィルムと、ハードコート層と、屈折率調整層とをこの順で備える透明基材を作製した。
以下のこと以外は、実施例1の透明導電性フィルムと同様にして、実施例2,3および比較例1の各透明導電性フィルムを作製した。
以下のこと以外は、実施例1の透明導電性フィルムと同様にして、比較例2の透明導電性フィルムを作製した。
以下のこと以外は、実施例1の透明導電性フィルムと同様にして、比較例3の透明導電性フィルムを作製した。
以下のこと以外は、実施例1の透明導電性フィルムと同様にして、比較例4の透明導電性フィルムを作製した。
実施例1~3および比較例1~4の各透明導電性フィルムにおける光透過性導電層の厚さを、FE-TEM観察により測定した。具体的には、まず、FIBマイクロサンプリング法により、実施例1~3および比較例1~4における各光透過性導電層の断面観察用サンプルを作製した。FIBマイクロサンプリング法では、FIB装置(商品名「FB2200」,Hitachi製)を使用し、加速電圧を10kVとした。次に、断面観察用サンプルにおける光透過性導電層の厚さを、FE-TEM観察によって測定した。FE-TEM観察では、FE-TEM装置(商品名「JEM-2800」,JEOL製)を使用し、加速電圧を200kVとした。
実施例1~3および比較例1~4の各透明導電性フィルムについて、光透過性導電層の比抵抗を調べた。具体的には、JIS K 7194(1994年)に準拠した四端子法により、光透過性導電層の表面抵抗を測定した後、表面抵抗値と光透過性導電層の厚さとを乗じることにより、比抵抗(Ω・cm)を求めた。その結果を表1に示す。
実施例1~3および比較例1~4の各透明導電性フィルムについて、光透過性導電層のホール移動度およびキャリア密度を測定した。本測定には、ホール効果測定システム(商品名「HL5500PC」,バイオラッド社製)を使用した。本測定により得られたホール移動度μ(cm2/V・s)およびキャリア密度n×1019(cm-3)の値を表1に示す。また、表1には、μに対するnの比率(n/μ)も示す。
実施例1~3および比較例1~4の各透明導電性フィルムについて、光透過性導電層のエッチング速度を調べた。具体的には、透明導電性フィルムについて、次のような第1ステップ、第2ステップ、および第3ステップがこの順で実施される1サイクルを繰り返した(第3ステップにおいて、後記の基準に基づきエッチングが完了したと判定されるまで、1サイクルを繰り返した)。
実施例1~3および比較例1における各光透過性導電層がKr原子を含有することは、次のようにして確認した。まず、走査型蛍光X線分析装置(商品名「ZSX PrimusIV」,リガク社製)を使用して、下記の測定条件にて蛍光X線分析測定を5回繰り返し、各走査角度の平均値を算出し、X線スペクトルを作成した。作成されたX線スペクトルにおいて、走査角度28.2°近傍にピークが出ていることを確認することにより、光透過性導電層にKr原子が含有されることを確認した。
スペクトル;Kr-KA
測定径:30mm
雰囲気:真空
ターゲット:Rh
管電圧:50kV
管電流:60mA
1次フィルタ:Ni40
走査角度(deg):27.0~29.5
ステップ(deg):0.020
速度(deg/分):0.75
アッテネータ:1/1
スリット:S2
分光結晶:LiF(200)
検出器:SC
PHA:100-300
実施例1~3の各透明導電性フィルムでは、光透過性導電層がKrを含有し、且つ、光透過性導電層における上述のn/μの値が4以上である。このような実施例1~3の各透明導電性フィルムでは、比較例1の透明導電性フィルム(n/μの値が4未満である)および比較例2~4の各透明導電性フィルム(光透過性導電層がKrを含有しない)よりも、光透過性導電層において高いエッチング速度が実現されている。
D 厚さ方向
10 透明基材
11 樹脂フィルム
12 機能層
20 光透過性導電層
Claims (5)
- 透明基材と光透過性導電層とを厚さ方向にこの順で備え、
前記光透過性導電層が、結晶質膜であり、クリプトンを含有し、2.2×10-4Ω・cm以下の比抵抗を有し、
前記光透過性導電層がホール移動度μ(cm2/V・s)およびキャリア密度n×1019(cm-3)を有し、μに対するnの比率が4.4以上20以下である、透明導電性フィルム。 - 前記光透過性導電層が、インジウム含有導電性酸化物を含有する、請求項1に記載の透明導電性フィルム。
- 前記ホール移動度が、5cm2/V・s以上40cm2/V・s以下である、請求項1または2に記載の透明導電性フィルム。
- 前記キャリア密度が、100×1019cm-3以上170×1019cm-3以下である、請求項1から3のいずれか一つに記載の透明導電性フィルム。
- 前記光透過性導電層がパターニングされている、請求項1から4のいずれか一つに記載の透明導電性フィルム。
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