JP2021524941A - 反射防止フィルム、偏光板およびディスプレイ装置 - Google Patents
反射防止フィルム、偏光板およびディスプレイ装置 Download PDFInfo
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- JP2021524941A JP2021524941A JP2020566248A JP2020566248A JP2021524941A JP 2021524941 A JP2021524941 A JP 2021524941A JP 2020566248 A JP2020566248 A JP 2020566248A JP 2020566248 A JP2020566248 A JP 2020566248A JP 2021524941 A JP2021524941 A JP 2021524941A
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- antireflection film
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- fluorine
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Abstract
Description
本出願は、2018年10月17日付の韓国特許出願第10−2018−0123703号、2018年10月17日付の韓国特許出願第10−2018−0123704号、2019年10月17日付の韓国特許出願第10−2019−0128927号および2019年10月17日付の韓国特許出願第10−2019−0128928号に基づく優先権の利益を主張し、当該韓国特許出願の文献に開示されたすべての内容は本明細書の一部として含まれる。
下記表1に記載の成分を混合してハードコート層形成用コーティング液(B1、B2およびB3)を製造した。
PETA:ペンタエリスリトールトリアクリレート
UA−306T:ウレタンアクリレートとしてトルエンジイソシアネートとペンタエリスリトールトリアクリレートとの反応物(Kyoeisha製品)
8BR−500:光硬化型ウレタンアクリレートポリマー(Mw200,000、Taisei Fine Chemical製品)
IRG−184:開始剤(Irgacure184、Ciba社)
Tego−270:Tego社のレベリング剤
BYK350:BYK社のレベリング剤
IPA:イソプロピルアルコール
XX−103BQ(2.0μm 屈折率1.515):ポリスチレンとポリメチルメタクリレートとの共重合粒子(Sekisui Plastic製品)
XX−113BQ(2.0μm 屈折率1.555):ポリスチレンとポリメチルメタクリレートとの共重合粒子(Sekisui Plastic製品)
MA−ST(30% in MeOH):大きさ10〜15nmのナノシリカ粒子がメチルアルコールに分散した分散液(Nissan Chemical製品)
トリメチロールプロパントリアクリレート(TMPTA)100g、中空状シリカナノ粒子(直径範囲:約42nm〜66nm、JSC catalyst and chemicals社製品)283g、ソリッド状シリカナノ粒子(直径範囲:約12nm〜19nm)59g、第1含フッ素化合物(X−71−1203M、ShinEtsu社)115g、第2含フッ素化合物(RS−537、DIC社)15.5gおよび開始剤(Irgacure127、Ciba社)10gを、MIBK(methyl isobutyl ketone)溶媒に固形分濃度3重量%となるように希釈して低屈折層形成用コーティング液(光硬化性コーティング組成物)を製造した。
ジペンタエリスリトールヘキサアクリレート(DPHA)100g、中空状シリカナノ粒子(直径範囲:約51nm〜72nm、JSC catalyst and chemicals社製品)143g、ソリッド状シリカナノ粒子(直径範囲:約12nm〜19nm)29g、含フッ素化合物(RS−537、DIC社)56gおよび開始剤(Irgacure127、Ciba社)3.1gを、MIBK(methyl isobutyl ketone)溶媒に固形分濃度3.5重量%となるように希釈して低屈折層形成用コーティング液(光硬化性コーティング組成物)を製造した。
下記表2に記載のそれぞれの低透湿性高分子フィルム(厚さ80μm)上に前記製造されたハードコート層形成用コーティング液(B1、B2、B3)それぞれを#12のmayer barでコーティングした後、60℃の温度で2分乾燥し、UV硬化してハードコート層(コーティング厚さは5μm)を形成した。UVランプはH bulbを用い、窒素雰囲気下で硬化反応を進行させた。硬化時に照射されたUV光量は100mJ/cm2である。
1.反射モードのX線回折(XRD)評価
実施例および比較例で得られた反射防止フィルムに対して2cm×2cm(横×縦)の大きさにサンプルを準備した後、1.54Åの波長のCu−Kα線を照射して反射モードのX線回折(XRD)パターンを測定した。
−Primary(incident beam)optics:motorized divergence slit、soller slit2.3°
−Secondary(diffracted beam)optics:soller slit2.3°
−LynxEye detector(1D detector)
測定モードはcoupled 2θ/θモードであり、FDS(Fixed Divergence Slit)0.3°を用いて、2θ値が6°から70°までの領域を、毎0.04°ごとに175秒ずつ測定した。
実施例および比較例で得られた反射防止フィルムの裏面(ハードコート層が形成されていない低透湿性高分子フィルムの一面)を暗色処理した後に、Solidspec3700(SHIMADZU)装置の反射率(Reflectance)モードを用いて380〜780nmの波長領域における平均反射率を測定し、その結果を下記表3に記載した。
実施例および比較例で得られた反射防止フィルムに対して任意のポイントを20個選定し、それぞれのポイントに対して、前記2.平均反射率評価方法で平均反射率を測定した。その後、測定された20個のポイントの平均反射率の算術平均値を求めた。その後、各ポイントにおける平均反射率と前記算術平均値間の差(絶対値)を平均反射率偏差として定義し、各20個のポイントにおけるそれぞれの平均反射率偏差を計算した。20個の平均反射率偏差のうち最も大きい値を有する平均反射率偏差を下記表3に記載した。
実施例および比較例で得られた反射防止フィルムに対して任意のポイントを20個選定し、それぞれのポイントに対して透光率を測定した。
実施例および比較例で得られた反射防止フィルムの透湿度は、38℃の温度および100%相対湿度下でMOCON test装置(PERMATRAN−W、MODEL3/61)を用いて測定した。
Claims (16)
- 低透湿性高分子フィルム;ハードコート層;および低屈折層を含み、
反射(Reflection)モードのX線回折(XRD)パターンにおいて、22〜24°の2θ値に第1ピークが現れ、24〜27°の2θ値に第2ピークが現れる、反射防止フィルム。 - 前記第2ピークの強度(P2)に対する前記第1ピークの強度(P1)の比率は0.4以上である、請求項1に記載の反射防止フィルム。
- 前記低屈折層は、バインダー樹脂と、前記バインダー樹脂に分散した無機微粒子とを含む、請求項1または2に記載の反射防止フィルム。
- 前記バインダー樹脂は、光重合性化合物の(共)重合体を含む、請求項3に記載の反射防止フィルム。
- 前記バインダー樹脂は、光重合性化合物、光反応性官能基を含む含フッ素化合物および反応性官能基が1以上置換されたポリシルセスキオキサン(polysilsesquioxane)間の架橋重合体をさらに含む、請求項4に記載の反射防止フィルム。
- 前記光反応性官能基を含む含フッ素化合物は、i)1つ以上の光反応性官能基が置換され、少なくとも1つの炭素に1以上のフッ素が置換された脂肪族化合物または脂肪族環化合物;ii)1以上の光反応性官能基で置換され、少なくとも1つの水素がフッ素に置換され、1つ以上の炭素がケイ素に置換されたヘテロ(hetero)脂肪族化合物またはヘテロ(hetero)脂肪族環化合物;iii)1つ以上の光反応性官能基が置換され、少なくとも1つのシリコンに1以上のフッ素が置換されたポリジアルキルシロキサン系高分子;およびiv)1以上の光反応性官能基で置換され、少なくとも1つの水素がフッ素に置換されたポリエーテル化合物;からなる群より選ばれた1種以上を含む、請求項5に記載の反射防止フィルム。
- 前記ポリシルセスキオキサンに置換される反応性官能基は、アルコール、アミン、カルボン酸、エポキシド、イミド、(メタ)アクリレート、ニトリル、ノルボルネン、オレフィン、ポリエチレングリコール、チオールおよびビニル基からなる群より選ばれた1種以上の官能基を含む、請求項5または6に記載の反射防止フィルム。
- 前記無機微粒子は、0.5〜100nmの平均直径を有するソリッド状無機ナノ粒子、および1〜200nmの平均直径を有する中空状無機ナノ粒子からなる群より選ばれた1種以上を含む、請求項3〜7のいずれか一項に記載の反射防止フィルム。
- 前記ハードコート層は、光硬化性樹脂を含むバインダー樹脂、および前記バインダー樹脂に分散した有機または無機微粒子;を含む、請求項1〜8のいずれか一項に記載の反射防止フィルム。
- 前記ハードコート層のバインダー樹脂は、数平均分子量10,000以上の高分子量(共)重合体をさらに含む、請求項9に記載の反射防止フィルム。
- 前記低透湿性高分子フィルムは、
波長400nm〜800nmで測定される厚さ方向のリタデーション(Rth)が5,000nm以上であり、
一方向の引張強度に対する、前記一方向と垂直な方向の引張強度の比率は2以上であり、
前記一方向の引張強度は、前記一方向と垂直な方向の引張強度より小さい値を有する、請求項1〜10のいずれか一項に記載の反射防止フィルム。 - 前記低透湿性高分子フィルムは、ポリエチレンテレフタレートフィルムである、請求項1〜11のいずれか一項に記載の反射防止フィルム。
- 前記反射防止フィルムは、380nm〜780nmの波長帯領域における平均反射率が2.0%以下である、請求項1〜12のいずれか一項に記載の反射防止フィルム。
- 前記反射防止フィルムは、
平均反射率偏差が0.2%p以下であり、
透光率偏差が0.2%p以下である、請求項1〜13のいずれか一項に記載の反射防止フィルム。 - 請求項1〜14のいずれか一項に記載の反射防止フィルムと、偏光子とを含む偏光板。
- 請求項1〜14のいずれか一項に記載の反射防止フィルムを含むディスプレイ装置。
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CN112219142A (zh) | 2021-01-12 |
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JP7486878B2 (ja) | 2024-05-20 |
EP3786673A1 (en) | 2021-03-03 |
CN112219142B (zh) | 2022-11-04 |
EP3786673B1 (en) | 2022-07-20 |
TW202030503A (zh) | 2020-08-16 |
TWI734223B (zh) | 2021-07-21 |
US20200348450A1 (en) | 2020-11-05 |
JP7321463B2 (ja) | 2023-08-07 |
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EP3715921A4 (en) | 2021-03-24 |
CN111566523A (zh) | 2020-08-21 |
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