JP2016525160A - 光学用粘着フィルム、光学用粘着フィルムの製造方法およびこれを含むタッチスクリーンパネル - Google Patents
光学用粘着フィルム、光学用粘着フィルムの製造方法およびこれを含むタッチスクリーンパネル Download PDFInfo
- Publication number
- JP2016525160A JP2016525160A JP2016523654A JP2016523654A JP2016525160A JP 2016525160 A JP2016525160 A JP 2016525160A JP 2016523654 A JP2016523654 A JP 2016523654A JP 2016523654 A JP2016523654 A JP 2016523654A JP 2016525160 A JP2016525160 A JP 2016525160A
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- JP
- Japan
- Prior art keywords
- adhesive film
- sensitive adhesive
- optical
- plate
- layered clay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 8
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- PSGCQDPCAWOCSH-UHFFFAOYSA-N (4,7,7-trimethyl-3-bicyclo[2.2.1]heptanyl) prop-2-enoate Chemical compound C1CC2(C)C(OC(=O)C=C)CC1C2(C)C PSGCQDPCAWOCSH-UHFFFAOYSA-N 0.000 claims description 7
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 claims description 7
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Images
Classifications
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
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Abstract
Description
2‐EHA(エチルヘキシルアクリレート)を100重量部、IBOA(イソボルニルアクリレート)を50重量部およびHEA(ヒドロキシエチルアクリレート)を40重量部の含有量比で混合し、これに、光開始剤として1‐ヒドロキシシクロヘキシルフェニルケトン(Irgacure184、HCPK)およびその他の添加剤としてカップリング剤を含む粘着剤組成物を製造した後、前記粘着剤組成物に有機置換されたオルガノクレイ(organoclay、Southern Clay(USA)社製、Cloisite10A、厚さが1nm、厚さに対する板状の長径の割合が1:100)1重量部を混合し、CAT社製のHomogenizer X360ミキサーを用いて10,000rpmで30分間十分に混合し、粘着剤組成物のコーティング液を準備した。離型処理されたポリエチレンテレフタレートフィルム(厚さ:75μm)に粘着剤層の厚さが100μmになるようにバーコーターを用いてコーティングした後、UVランプを用いて紫外線を10分間照射して硬化させることで粘着フィルムを製造した。
前記実施例1でオルガノクレイを3重量部の含有量でを挿入した以外は、実施例1と同じ方法で粘着フィルムを製造した。
前記実施例1でオルガノクレイを5重量部の含有量で挿入した以外は、実施例1と同じ方法で粘着フィルムを製造した。
実施例1と同様にコーティング液を製造した後、CAT社製のHomogenizer X360ミキサーを用いて10,000rpmで5分間混合した以外は、実施例2と同じ方法で粘着フィルムを製造した。
実施例1と同様にコーティング液を製造した後、CAT社製のHomogenizer X360ミキサーを用いて1,000rpmで30分間混合した以外は、実施例3と同じ方法で粘着フィルムを製造した。
比較例1は、実施例1で板状型無機ナノ粒子であるオルガノクレイを含んでいない以外は、実施例1と同じ方法で粘着フィルムを製造した。
(実験例1)
前記実施例1で製造された光学用粘着フィルムに対してTEM写真を撮影した。図3は実施例1で製造された光学用粘着フィルムのTEM写真である。光学用粘着フィルム内に板状型無機ナノ粒子が配向性を有して整列されていることを確認することができる。
実施例1〜5および比較例1の光学用粘着フィルムに対して全光線透過率(Total Transmittance)およびヘイズをASTM D 1003 Modified法でCM‐5(Konica Minolt社製)を用いて測定し、その結果を下記表2に記載した。
(ガラス/OCAの積層体の透過率)/空気の透過率*100
‐GlassおよびOCA界面での反射率は補正しない
水蒸気透過度は、ASTM E96法で測定し、測定機器としてはMOCON社製のModel:PERMATRAN_W3/33MAを使用した。
ASTM D3759の基準を適用して、Texture Analyzer社製のTA Plusを用いて引張強度を測定した。
実施例1〜3の光学用粘着フィルムに対してインチ(inch)幅に対する約300mm/minの速度で剥離強度を測定した。
2 板状型無機ナノ粒子
10、20 光学用粘着フィルム
Claims (19)
- 板状型無機ナノ粒子と、硬化性樹脂と、を含む、光学用粘着フィルム。
- 前記板状型無機ナノ粒子は、厚さ1nm〜100nmの板状形態である、請求項1に記載の光学用粘着フィルム。
- 前記板状型無機ナノ粒子は、厚さに対する板状の長径の割合が1:50〜1:200である、請求項1に記載の光学用粘着フィルム。
- 前記板状型無機ナノ粒子は、層状粘土化合物を構成する少なくとも一つの層を含む、請求項1に記載の光学用粘着フィルム。
- 前記層状粘土化合物は、マイカ(Mica)、スメクタイト(Smectite)、バーミキュライト(Vermiculite)、クロライト(Chlorite)、モンモリロナイト(Montmorillonite、MMT)、ノントロナイト(Nontronite)、サポナイト(saponite)、ヘクトライト(Hectorite)、ベントナイト(Bentonite)およびこれらの組み合わせからなる群から選択されるいずれか一つを含む、請求項1に記載の光学用粘着フィルム。
- 前記層状粘土化合物は、親水性官能基がC12‐C18アルキル基で置換されている、請求項5に記載の光学用粘着フィルム。
- 前記硬化性樹脂は、2‐エチルヘキシルアクリレート(2‐EHA、ethyl hexyl acylate)、イソボルニルアクリレート(IBOA、isobonyl acrylate)、ヒドロキシエチルアクリレート(HEA、hydroxy ethyl acrylate)、ヒドロキシブチルアクリレート(HBA、hydroxyl butyl acrylate)、ヒドロキシプロピルアクリレート(HPA、hydroxyl propyl acrylate)、ヘキシルメタクリレート(HMA、Hexyl methacrylate)およびこれらの組み合わせからなる群から選択されるいずれか一つを含むモノマーが重合されたアクリル系光硬化性樹脂である、請求項1に記載の光学用粘着フィルム。
- 前記硬化性樹脂100重量部と、前記層状粘土化合物1〜20重量部と、を含む、請求項1に記載の光学用粘着フィルム。
- 前記硬化性樹脂のマトリックス内に、前記層状粘土化合物が前記光学用粘着フィルムの面と平行な方向に配置される配向性を有するように分散されている、請求項1に記載の光学用粘着フィルム。
- CuKα線を用いたX線回折(XRD)パターンを測定した結果、2〜10度の2θ値でピークが存在していない、請求項1に記載の光学用粘着フィルム。
- 透過率が91〜93%であり、水蒸気透過度(WVTR)値が50℃で24時間放置した後に測定したときに10gmm/m2〜80gmm/m2である、請求項1に記載の光学用粘着フィルム。
- 靭性が2.0Kg/mm2〜5.0Kg/mm2、常温測定モジュラスが0.5×105Pa〜1.3×105Pa、および剥離強度が2.0kg/in〜3.5kg/inである、請求項1に記載の光学用粘着フィルム。
- 有機置換された疎水性の層状粘土化合物と光学用粘着フィルム形成用硬化性モノマーを混合して、前記層状粘土化合物の層間に前記硬化性モノマーが介在されるように混合した粘着剤組成物を準備する段階と、
前記粘着剤組成物を硬化させて、前記層状粘土化合物の層間に介在された前記硬化性モノマーが硬化性樹脂に重合されるに伴い、前記層状粘土化合物の各層を形成する板状型無機ナノ粒子を剥離して、前記硬化性樹脂のマトリックス内に前記板状型無機ナノ粒子が分散された光学用粘着フィルムを得る段階と、を含む、光学用粘着フィルムの製造方法。 - 前記層状粘土化合物と前記硬化性モノマーを500〜10,000rpmで5〜60分間攪拌して混合させる、請求項13に記載の光学用粘着フィルムの製造方法。
- 前記板状型無機ナノ粒子は、厚さ1nm〜100nmの板状形態である、請求項13に記載の光学用粘着フィルムの製造方法。
- 前記板状型無機ナノ粒子は、厚さに対する板状の長径の割合が1:50〜1:200である、請求項13に記載の光学用粘着フィルムの製造方法。
- 前記有機置換された疎水性の層状粘土化合物は、マイカ(Mica)、スメクタイト(Smectite)、バーミキュライト(Vermiculite)、クロライト(Chlorite)、モンモリロナイト(Montmorillonite、MMT)、ノントロナイト(Nontronite)、サポナイト(saponite)、ヘクトライト(Hectorite)、ベントナイト(Bentonite)およびこれらの組み合わせからなる群から選択されるいずれか一つを含み、前記層状粘土化合物の親水性官能基がC12‐C18アルキル基で置換されている、請求項13に記載の光学用粘着フィルムの製造方法。
- 片面に導電層が形成された伝導性プラスチックフィルムと、
前記伝導性プラスチックフィルムに積層されている請求項1から12のいずれか1項に記載の光学用粘着フィルムと、を含む、タッチスクリーンパネル。 - 前記伝導性プラスチックフィルムが、ITO(導電性金属酸化物)層が片面に形成されたポリエチレンテレフタレートフィルムである、請求項18に記載のタッチスクリーンパネル。
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