JP2017092033A - 光透過性導電フィルムおよび調光フィルム - Google Patents
光透過性導電フィルムおよび調光フィルム Download PDFInfo
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Abstract
Description
(1)Xa≦Xc
(2)Ya≧Yc
(3)前記移動距離Lが1.0以上45.0以下である、
本発明[2]は、Xaに対するXcの比(Xc/Xa)が、1.05以上1.80以下である、[1]に記載の光透過性導電フィルムを含んでいる。
光透過性導電フィルム1の一実施形態は、図1に示すように、所定の厚みを有するフィルム形状(シート形状を含む)をなし、厚み方向と直交する所定方向(前後方向および左右方向、すなわち、面方向)に延び、平坦な上面および平坦な下面(2つの主面)を有する。光透過性導電フィルム1は、例えば、調光フィルム4(後述、図2参照)などの一部品であり、つまり、調光装置(後述)ではない。すなわち、光透過性導電フィルム1は、調光フィルム4などを作製するための部品であり、調光機能層5などを含まず、部品単独で流通し、産業上利用可能なデバイスである。
光透過性基材2は、光透過性導電フィルム1の最下層であって、光透過性導電フィルム1の機械強度を確保する支持材である。
非晶質光透過性導電層3は、非晶質の光透過性導電層であって、必要により後の工程でエッチングによりパターニングすることができる導電層である。
次に、光透過性導電フィルム1を製造する方法について説明する。
次に、上記した光透過性導電フィルム1を用いて調光フィルム4を製造する方法について図2を参照して説明する。
図1の実施形態では、光透過性基材2の表面に非晶質光透過性導電層3が直接配置されているが、例えば、図示しないが、光透過性基材2の上面および/または下面に、機能層を設けることができる。
厚み188μmのポリエチレンテレフタレート(PET)フィルム(三菱樹脂製、品名「ダイアホイル」)を準備し、光透過性基材とした。
Ar流量に対するO2流量の比(O2/Ar)を0.0333とした以外は、実施例1と同様にして光透過性導電フィルム(ITO厚み:65nm)を製造した。
Ar流量に対するO2流量の比(O2/Ar)を0.0327とした以外は、実施例1と同様にして光透過性導電フィルム(ITO厚み:65nm)を製造した。
Ar流量に対するO2流量の比(O2/Ar)を0.0296とした以外は、実施例1と同様にして光透過性導電フィルム(ITO厚み:65nm)を製造した。
Ar流量に対するO2流量の比(O2/Ar)を0.0289とした以外は、実施例1と同様にして光透過性導電フィルム(ITO厚み:65nm)を製造した。
Ar流量に対するO2流量の比(O2/Ar)を0.0280とした以外は、実施例1と同様にして光透過性導電フィルム(ITO厚み:65nm)を製造した。
Ar流量に対するO2流量の比(O2/Ar)を0.0264とした以外は、実施例1と同様にして光透過性導電フィルム(ITO厚み:65nm)を製造した。
Ar流量に対するO2流量の比(O2/Ar)を0.0358とした以外は、実施例1と同様にして光透過性導電フィルム(ITO厚み:65nm)を製造した。
厚み50μmのポリエチレンテレフタレート(PET)フィルム(三菱樹脂製、品名「ダイアホイル」)を光透過性基材とした。
Ar流量に対するO2流量の比(O2/Ar)を0.0338とした以外は、実施例1と同様にして光透過性導電フィルム(ITO厚み:65nm)を製造した。
Ar流量に対するO2流量の比(O2/Ar)を0.0373とした以外は、実施例1と同様にして光透過性導電フィルム(ITO厚み:65nm)を製造した。
気圧を0.4Paとし、Ar流量に対するO2流量の比(O2/Ar)を0.0114とした以外は、実施例9と同様にして、光透過性導電フィルム(ITO厚み:30nm)を製造した。
気圧を0.4Paとし、Ar流量に対するO2流量の比(O2/Ar)を0.0074とし、RF重畳DCマグネトロンスパッタリング法(RF周波数13.56MHz、DC電力に対するRF電力の比(RF電力/DC電力)は0.2)を実施した以外は、実施例9と同様にして光透過性導電フィルム(ITO厚み:30nm)を製造した。
厚み50μmのPETフィルムを用い、Ar流量に対するO2流量の比(O2/Ar)を0.0201とし、ITO層の厚みを30nmとした以外は、実施例1と同様にして光透過性導電フィルムを製造した。
(1)厚み
PETフィルム(透明基材)の厚みは、膜厚計(尾崎製作所社製、装置名「デジタルダイアルゲージ DG−205」)を用いて測定した。ITO層(光透過性導電層)の厚みは、透過型電子顕微鏡(日立製作所製、装置名「HF−2000」)を用いた断面観察により測定した。
ラザフォード後方散乱分光法を測定原理とする測定装置(National Electrostatics Corporation製、「Pelletron 3SDH」)を用いて、各光透過性導電フィルムのITO層中のArの存在原子量を分析した。具体的には、In、Sn、O、Arの4元素を検出対象とし、4元素の総存在原子量に対するArの存在原子量の比率(atomic%)を測定した。
ホール効果測定システム(バイオラッド製、商品名「HL5500PC」)を用いて測定を実施した。キャリア密度は、上記(1)で求めたITO層の厚みを用いて算出した。
各光透過性導電フィルムを、80℃、500時間加熱して、PETフィルム(透明基材)と被加熱ITO層(被加熱光透過性導電層)とを備える被加熱光透過性導電フィルムを得た。
上記(4)および上記(5)で得られたキャリア密度およびホール移動度、下記式を用いて、移動距離Lを算出した。
なお、非晶質光透過性導電層のキャリア密度をXa×1019(/cm3)、ホール移動度をYa(cm2/V・s)とした。被加熱光透過性導電層のキャリア密度をXc×1019(/cm3)、ホール移動度をYc(cm2/V・s)とした。
各光透過性導電フィルムおよび各被加熱光透過性導電フィルムを、塩酸(濃度:5質量%)に15分間浸漬した後、水洗・乾燥し、各導電層の15mm程度の間の二端子間抵抗を測定した。15mm間の二端子間抵抗が10kΩを超過した場合を、非晶質と判断し、10kΩを超過しなかった場合を、結晶質と判断した。
各光透過性導電フィルムのITO層の表面抵抗値はJIS K7194(1994年)に準じて四端子法により求めた。すなわち、まず、各光透過性導電フィルムのITO層の表面抵抗値(Ra)を測定した。次いで、80℃、500時間加熱後の光透過性導電フィルムの光透過性導電層の表面抵抗値(Rc)を測定した。加熱前の表面抵抗値に対する加熱後の表面抵抗値の抵抗変化率(100x(Rc/Ra))を求め、下記基準にて評価を実施した。
○:抵抗変化率が±30%未満
△:抵抗変化率が±(30%〜49%)
×:抵抗変化率が±50%以上
2 光透過性基材
3 非晶質光透過性導電層
Claims (5)
- 光透過性基材と、非晶質光透過性導電層とを備える光透過性導電フィルムであって、
前記非晶質光透過性導電層のキャリア密度をXa×1019(/cm3)、ホール移動度をYa(cm2/V・s)とし、
前記非晶質光透過性導電層を加熱処理した後の被加熱光透過性導電層のキャリア密度をXc×1019(/cm3)、ホール移動度をYc(cm2/V・s)とし、
移動距離Lを、{(Xc−Xa)2+(Yc−Ya)2}1/2としたときに、
下記(1)〜(3)の条件を満たすことを特徴とする、光透過性導電フィルム。
(1)Xa≦Xc、
(2)Ya≧Yc、
(3)前記移動距離Lが1.0以上45.0以下である。 - Xaに対するXcの比(Xc/Xa)が、1.05以上1.80以下であることを特徴とする、請求項1に記載の光透過性導電フィルム。
- 前記被加熱光透過性導電層が、非晶質であることを特徴とする、請求項1または2に記載の光透過性導電フィルム。
- 前記非晶質光透過性導電層は、インジウム系導電性酸化物を含有することを特徴とする、請求項1〜3のいずれか一項に記載の光透過性導電フィルム。
- 第1の光透過性導電フィルムと、調光機能層と、第2の光透過性導電フィルムとを順に備え、
前記第1の光透過性導電フィルムおよび/または前記第2の光透過性導電フィルムは、請求項1〜4のいずれか一項に記載の光透過性導電フィルムであることを特徴とする、調光フィルム。
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CN108352217A (zh) | 2018-07-31 |
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JP6530118B2 (ja) | 2019-06-12 |
EP3376508A1 (en) | 2018-09-19 |
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JP6412539B2 (ja) | 2018-10-24 |
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