JP6946615B2 - 粒子の塗布方法 - Google Patents
粒子の塗布方法 Download PDFInfo
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Description
(a)基材上にナノ粒子、硬化性樹脂および溶媒を含む組成物をコーティングした後、乾燥および硬化する工程と;
(b)基材をモールドに押し付ける工程と;
(c)平坦な基材を部分侵食可能な溶媒を利用して侵食させる工程と;
(d)平坦な基材に物理的な力を加える工程。
ボールスペーサー組成物がコーティングされる前に、基材に対して、AFM(NX10、Park systems社)装備を利用して、10μm×10μm領域においての表面粗さRa値を測定した。
ボールスペーサーが固着した基材に対して、Optical microscopy(BX51、OLYMPUS社)を利用して、×40倍率で基準面積(1mm2)においてのボールスペーサー個数を測定した後、結合していないボールスペーサー個数をボールスペーサーの総個数で分けた値を分散度として評価した。
基材の製造
シクロヘキサノン(cyclohexanone)溶媒(Cyclohexanone 99%、大井化金)に粒径が370nmのポリメチルメタクリレート(PMMA)粒子(XX−52BQ、SEKISUI社)および自社配光膜(5−ノルボルネン−2−メチル−(4−メトキシシンナメート))を混合し、ナノ粒子組成物を製造した(溶媒:PMMA粒子:自社配光膜の重量比率=100:0.1:4)。前記ナノ粒子組成物をポリエチレンテレフタレート(PET、COSMOSHINE(登録商標)A4300 125μm、TOYOBO社)基材フィルム(横×縦=100mm×100mm)上にmayer bar(#4)を利用して約10μm厚さにコーティングした。前記コーティングされた組成物を約80℃のオーブンで約2分間乾燥した。前記乾燥した組成物に約200 mW/cm2強さの紫外線を10秒間照射し、硬化させて、基材を製造した。
密度が0.948g/cm3のシクロヘキサノン(cyclohexanone)溶媒(Cyclohexanone 99%、大井化金)に、密度が1.19g/cm3であり、粒径が12μmのボールスペーサー(KBN−512、SEKISUI社)および自社配光膜(5−ノルボルネン−2−メチル−(4−メトキシシンナメート))を添加した後、混合し、ボールスペーサー組成物を製造した(溶媒:ボールスペーサー:自社配光膜の重量比率=100:1:2)。前記ボールスペーサー組成物を前記製造された基材上にmayer bar (#10)を利用して約25μm厚さにコーティングした。前記コーティングされた組成物を約100℃のオーブンで約2分間乾燥した。前記乾燥した組成物に強さ約200mW/cm2の紫外線を10秒間照射し、硬化させることによって、基材上にボールスペーサーを塗布した。前記ボールスペーサーは、前記基材に固着して分散した状態に塗布された。
基材フィルムをポリエチレンテレフタレート(PET、TH46H、SKC社、横×縦=100mm×100mm)に変更したことを除いて、実施例1と同じ方式で、ボールスペーサーを塗布した。
基材フィルムをポリエチレンテレフタレート(PET、U48、Toray社、横×縦=100mm×100mm)に変更したことを除いて、実施例1と同じ方式で、ボールスペーサーを塗布した。
ポリエチレンテレフタレート(PET、COSMOSHINE(登録商標)A4300、TOYOBO社)基材フィルム上にすぐにボールスペーサー組成物をコーティングし、乾燥および硬化したことを除いて、実施例1と同じ方式でボールスペーサーを塗布した。
ポリエチレンテレフタレート(PET、U48、Toray社)基材フィルム上にすぐにスペーサー組成物をコーティングし、乾燥および硬化したことを除いては、実施例3と同じ方式でボールスペーサーを塗布した。
基材の製造時にポリメチルメタクリレート(PMMA)粒子を混合しないことを除いて、実施例1と同じ方式で、ボールスペーサーを塗布した。
ポリエチレンテレフタレート(PET、TH46H、SKC社)基材フィルム上にすぐにボールスペーサー組成物をコーティングし、乾燥および硬化したことを除いて、実施例2と同じ方式でボールスペーサーを塗布した。
110 基材フィルム
120 コーティング層
121 ナノ粒子
122 光硬化性樹脂
200 コーティング組成物
Claims (15)
- 表面粗さRaが3nm〜100nmの基材上に、1μm〜1,000μm未満の平均粒径を有するボールスペーサー、硬化性樹脂および溶媒を含むコーティング組成物をコーティングした後、乾燥および硬化する工程を含み、前記ボールスペーサーは、密度が0.61g/cm3〜2.1g/cm3であり、前記ボールスペーサーの密度は、溶媒の密度より大きい、粒子の塗布方法。
- 前記表面粗さRaが3nm〜100nmの基材は、下記の(a)〜(d)のうちいずれか一つの工程で製造される、請求項1に記載の粒子の塗布方法:
(a)基材上にナノ粒子、硬化性樹脂および溶媒を含む組成物をコーティングした後、乾燥および硬化する工程と、
(b)基材をモールドに押し付ける工程と、
(c)平坦な基材を部分侵食可能な溶媒を利用して侵食させる工程と、
(d)平坦な基材に物理的な力を加える工程。 - 前記基材は、ポリエチレンテレフタレート(polyethylene terephthalate)、ポリテトラフルオロエチレン(polytetrafluoroethylene)、ポリエチレン(polyethylene)、ポリプロピレン(polypropylene)、ポリブテン(polybutene)、ポリブタジエン(polybutadiene)、塩化ビニル共重合体(vinyl chloride copolymer)、ポリウレタン(polyurethane)、エチレン−ビニルアセテート(ethylene−vinyl acetate)、エチレン−プロピレン共重合体(ethylene−propylene copolymer)、エチレン−アクリル酸エチル共重合体(ethylene−ethyl acrylic acid copolymer)、エチレン−アクリル酸メチル共重合体(ethylene−methyl acrylic acid copolymer)およびポリイミド(polyimide)よりなる群から選ばれた一つの基材フィルムを含む、請求項2に記載の粒子の塗布方法。
- 前記基材は、前記基材フィルム上に形成された導電性層をさらに含み、前記基材は、前記基材フィルムの表面粗さを前記(a)〜(d)のうちいずれか一つの工程で3nm〜100nmに調節した後、前記基材フィルム上に導電性層を形成することによって製造される、請求項3に記載の粒子の塗布方法。
- 前記ボールスペーサーは、前記基材に固着した状態に分散する、請求項1から4のいずれか一項に記載の粒子の塗布方法。
- 前記ボールスペーサーは、粒径が1μm〜100μm未満である、請求項1から5のいずれか一項に記載の粒子の塗布方法。
- 前記溶媒は、n−ヘキサン(normal hexane)、ヘプタン(heptane)およびオクタン(octane)を含む脂肪族系;ベンゼン(benzene)、トルエン(toluene)およびキシレン(xylene)を含む芳香族系;ジクロロメタン(dichloro methane)、トリクロロメタン(trichloro methane)およびテトラクロロメタン(tetrachloro methane)を含む塩素系;エタノール(ethanol)、イソプロパノール(isopropanol)およびブタノール(butanol)を含むアルコール系;エチルアセテート(ethyl acetate)、プロピルアセテート(propyl acetate)およびプロピレングリコールメチルエーテルアセテート(PGMEA、propylene glycol methyl ether acetate)を含むエステル系;メチルエチルケトン(MEK、methyl ethyl ketone)、メチルイソブチルケトン(MIBK、methyl iso−butyl ketone)、シクロヘキサノン(cyclohexanone)およびシクロペンタノン(cyclopentanone)を含むケトン系;およびテトラヒドロフラン(tetrahydrofuran)、石油エーテル(petroleum ether)、1、2−ジメトキシエタン(DME、1、2−dimethoxy ethane)およびジエチレングリコールジメチルエーテル(diglyme、diethylene glycol dimethyl ether)を含むエーテル系よりなる群から選ばれた一つ以上の溶媒を含む、請求項1から6のいずれか一項に記載の粒子の塗布方法。
- 前記コーティング組成物のコーティング厚さは、10nm〜1000nmである、請求項1から7のいずれか一項に記載の粒子の塗布方法。
- 前記コーティング組成物は、溶媒100重量部に対して0.1重量部〜10重量部で前記ボールスペーサーを含む、請求項1から8のいずれか一項に記載の粒子の塗布方法。
- 表面粗さRaが3nm〜100nmの基材と、
前記基材上に分散した1μm〜1,000μm未満の平均粒径を有するボールスペーサーと、を含み、前記ボールスペーサーの分散度が0.5〜2であり、
前記ボールスペーサーは、前記基材に固着した状態で分散している、光学フィルム。 - 前記ボールスペーサーの粒径は8μm〜30μmである、請求項10に記載の光学フィルム。
- 前記ボールスペーサーは炭素系の材料からなる、請求項10に記載の光学フィルム。
- 表面粗さRaが3nm〜100nmの下部基材上に1μm〜1,000μm未満の平均粒径を有するボールスペーサー、光配向性樹脂および溶媒を含むコーティング組成物をコーティングした後、乾燥および硬化し、光配向膜を形成する工程と、前記光配向膜上に液晶層を形成する工程と、を含み、前記ボールスペーサーは、密度が0.61g/cm3〜2.1g/cm3であり、前記ボールスペーサーの密度は、溶媒の密度より大きい、能動型液晶デバイスの製造方法。
- 前記液晶層上に上部基材を積層する工程をさらに含み、前記ボールスペーサーは、前記下部基材と上部基材との間に間隔を維持するスペーサーとして機能する、請求項13に記載の能動型液晶デバイスの製造方法。
- 前記下部基材または上部基材は、基材フィルムおよび前記基材フィルム上に電極層を含む、請求項14に記載の能動型液晶デバイスの製造方法。
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