JP2018528449A - 偏光子保護フィルム、これを含む偏光板、および前記偏光板を含む液晶ディスプレイ装置 - Google Patents
偏光子保護フィルム、これを含む偏光板、および前記偏光板を含む液晶ディスプレイ装置 Download PDFInfo
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- JP2018528449A JP2018528449A JP2017566627A JP2017566627A JP2018528449A JP 2018528449 A JP2018528449 A JP 2018528449A JP 2017566627 A JP2017566627 A JP 2017566627A JP 2017566627 A JP2017566627 A JP 2017566627A JP 2018528449 A JP2018528449 A JP 2018528449A
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- protective film
- polarizer protective
- polarizer
- dye
- polarizing plate
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- G—PHYSICS
- G02—OPTICS
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Abstract
Description
多官能アクリレート系モノマー、5〜200%の伸び率を有するアクリレート系オリゴマー、および最大吸収波長が580nm〜610nmの染料または顔料を含む組成物を離型フィルム上にコーティングするステップと、
前記組成物を硬化させて偏光子保護フィルムを形成するステップと、
前記離型フィルムを前記偏光子保護フィルムから剥離するステップとを含む偏光子保護フィルムの製造方法を提供する。
10:バックライトユニット
20:プリズムシート
30:偏光子保護フィルム
31:表面層
40:接着剤層
50:偏光子
60:保護フィルム
70:下部ガラス基板
75:薄膜トランジスタ
80:液晶層
85:カラーフィルタ
90:上部ガラス基板
95:上部偏光板
100:偏光板
[式1]
トリメチロールプロパントリアクリレート(TMPTA)50g、DPCA120(Nippon Kayaku、カプロラクトン変性6官能基アクリレート、ASTM D638で測定した伸び率12%、Mw1,950)20g、PU3400(Miwon、エチレンオキシド変性3官能基アクリレート、ASTM D638で測定した伸び率20%、MW2,500)30g、最大吸収波長が593nmのポルフィリン系染料0.2g、光重合開始剤(商品名:Darocur TPO)2g、溶媒MEK(メチルエチルケトン)10gを混合してコーティング液を製造した。前記コーティング液をPET離型フィルムにバーコーティングした。これを60℃で2分間乾燥した後、窒素雰囲気下、ブラックUVで光量600mJ/cm2を照射して、厚さが25μmの保護フィルムを得た。
トリメチロールプロパントリアクリレート(TMPTA)50g、DPCA120 20g、TA604AU(日本油脂、エチレンオキシド変性3官能基アクリレート、ASTM D638で測定した伸び率49%、MW2,300)30g、最大吸収波長が593nmのポルフィリン系染料0.2g、光重合開始剤(商品名:Darocur TPO)2g、溶媒MEK(メチルエチルケトン)10gを混合してコーティング液を製造した。前記コーティング液をPET離型フィルムにバーコーティングした。これを60℃で2分間乾燥した後、窒素雰囲気下、ブラックUV光量600mJ/cm2を照射して、厚さが25μmの保護フィルムを得た。
C150(Nano resinのTMPTA(トリメチロールプロパントリアクリレート)に20nmのSiO2が50重量%分散している製品、SiO2 25g)50g、PU3400 20g、TA604AU30g、光重合開始剤(商品名:Darocur TPO)2g、染料PD−319(Mitsui)0.2g、溶媒MEK(メチルエチルケトン)10gを混合してコーティング液を製造した。前記コーティング液をPET離型フィルムにバーコーティングした。これを60℃で2分間乾燥した後、窒素雰囲気下、ブラックUV光量600mJ/cm2を照射して、厚さが25μmの保護フィルムを得た。
トリメチロールプロパントリアクリレート(TMPTA)50g、DPCA120(Nippon Kayaku、カプロラクトン変性6官能基アクリレート、ASTM D638で測定した伸び率12%、Mw1,950)20g、PU3400(Miwon、エチレンオキシド変性3官能基アクリレート、ASTM D638で測定した伸び率20%、MW2,500)30g、最大吸収波長が593nmのポルフィリン系染料0.2g、最大吸収波長が493nmの染料FDB−007(yamada chemical社)0.06g、光重合開始剤(商品名:Darocur TPO)2g、溶媒MEK(メチルエチルケトン)10gを混合してコーティング液を製造した。前記コーティング液をPET離型フィルムにバーコーティングした。これを60℃で2分間乾燥した後、窒素雰囲気下、ブラックUVで光量600mJ/cm2を照射して、厚さが25μmの保護フィルムを得た。
保護フィルム
トリメチロールプロパントリアクリレート(TMPTA)50g、DPCA120(Nippon Kayaku、カプロラクトン変性6官能基アクリレート、ASTM D638で測定した伸び率12%、Mw1,950)20g、PU3400(Miwon、エチレンオキシド変性3官能基アクリレート、ASTM D638で測定した伸び率20%、MW2,500)30g、最大吸収波長が593nmであるポルフィリン系染料0.2g、光重合開始剤(商品名:Darocur TPO)2g、溶媒MEK(メチルエチルケトン)10gを混合してコーティング液を製造した。前記コーティング液をPET離型フィルムにバーコーティングした。これを60℃で2分間乾燥した後、窒素雰囲気下、ブラックUVで光量200mJ/cm2を照射して、厚さが25μmの保護フィルムを得た。
ペンタエリスリトールトリ(テトラ)アクリレート(PETA)70g、TA604AU30g、光重合開始剤(商品名:Darocur TPO)2g、溶媒MEK(メチルエチルケトン)100gを混合してコーティング液を製造した。前記コーティング液を半硬化された偏光子保護フィルムに2μmの厚さにバーコーティングした。これを60℃で2分間乾燥した後、窒素雰囲気下、ブラックUVで光量600mJ/cm2を照射して、全体厚さが27μmの保護フィルムを得た。
トリメチロールプロパントリアクリレート(TMPTA)50g、EB1290(SK Cytec、6官能基ウレタンアクリレート、ASTM D638で測定した伸び率0%、mw1,000)50g、光重合開始剤(商品名:Darocur TPO)2g、染料PD−319(Mitsui)0.2g、溶媒MEK(メチルエチルケトン)10gを混合してコーティング液を製造した。前記コーティング液をPET離型フィルムにバーコーティングした。これを60℃で2分間乾燥した後、窒素雰囲気下、ブラックUVで光量200mJ/cm2を照射して、厚さが25μmの保護フィルムを得た。
熱可塑性樹脂のポリ(メチルメタクリレート)PMMA100g、最大吸収波長が593nmのポルフィリン系染料0.2g、溶媒MEK100gを混合して組成物を製造し、前記コーティング液をPET離型フィルムにバーコーティングした。これを90℃で5分間熱を加えて、厚さが25μmの保護フィルムを得た。
ペンタエリスリトールトリ(テトラ)アクリレート50g、6官能ウレタンアクリレート50g、光吸収剤PD−319(Mitsui)0.5g、光重合開始剤Irgacure184 5g、溶媒MEK(メチルエチルケトン)100gを混合してコーティング液を製造した。前記コーティング液を60μmの厚さのTACフィルムに3μmの厚さにコーティングした後、60℃で2分間乾燥した後、水銀ランプで約200mJ/cm2で硬化させた。
実験例1〜5
前記実施例1〜5で製造した保護フィルムを、それぞれアクリル系接着剤を用いて接着剤層の厚さが略1μmとなるようにPVAフィルムとラミネーションして接着し、PET離型フィルムを剥離した。PVAの他の一面には40μmの厚さのTACを同様の方法で接着させることにより、偏光板を製造した。
比較例1および2で製造した保護フィルムを、それぞれアクリル系接着剤を用いて接着剤層の厚さが約1μmとなるようにPVAフィルムとラミネーションして接着し、PET離型フィルムを剥離した。PVAの他の一面には40μmの厚さのTACを同様の方法で接着させることにより、偏光板を製造した。
製造した保護フィルムを、それぞれTACフィルムがPVAフィルム側に接着されるようにしたことを除けば、実験例1〜3と同様に偏光板を製造した。比較例で製造した保護フィルムは離型フィルムを含まないので、別の剥離工程を行わなかった。
デジタルマイクロメーター器を用いて測定した。
UV−VIS−NIRスペクトロメーター(Solidspec−3700、SHIMADZU社)を用いて、300〜800nmの波長における透過率を積分球タイプで測定した。
鉛筆硬度測定器を用いて、前記フィルムの表面に対して、測定標準JIS K5400によって、500g荷重で5回往復した後、キズのない硬度を確認した。
フィルムのコーティング層の表面に対して、Steel wool#0000に一定の荷重をかけて往復して10回擦った後、キズの生じない最大荷重を確認した。
各偏光板を10cmx10cmに切って24時間保管した後、平面に位置させた時、各角の一辺が平面から離隔する距離の平均値を測定した。
各偏光板を直径5mmの円筒形マンドレルに挟んで巻いた後、クラック発生の有無を判断して、クラックが発生しない場合をOK、クラックが発生した場合をNGと評価した。
Claims (23)
- 多官能アクリレート系モノマーおよび5〜200%の伸び率を有するアクリレート系オリゴマーを含む光硬化樹脂と、
最大吸収波長が580nm〜610nmの染料または顔料とを含む
偏光子保護フィルム。 - 前記偏光子保護フィルムの一面に備えられた接着剤層をさらに含む、
請求項1に記載の偏光子保護フィルム。 - 前記染料または顔料は、
ポルフィリン(porphyrin)誘導体化合物、シアニン(cyanine)誘導体化合物、またはスクアリリウム(squarylium)誘導体化合物である、
請求項1または2に記載の偏光子保護フィルム。 - 前記偏光子保護フィルムは、
最大吸収波長が480nm〜510nm内にある染料または顔料を追加的に含むものである、
請求項1から4のいずれか1項に記載の偏光子保護フィルム。 - 前記光硬化樹脂は、
光硬化性官能基を含む化合物であり、
多官能アクリレート系モノマー、多官能アクリレート系オリゴマー、および多官能アクリレート系弾性高分子からなる群より選択される1種以上を含むものである、
請求項1から5のいずれか1項に記載の偏光子保護フィルム。 - 500g荷重における鉛筆硬度がH以上である、
請求項1から6のいずれか1項に記載の偏光子保護フィルム。 - 前記多官能アクリレート系モノマーは、
ヘキサンジオールジアクリレート(HDDA)、トリプロピレングリコールジアクリレート(TPGDA)、エチレングリコールジアクリレート(EGDA)、トリメチロールプロパントリアクリレート(TMPTA)、トリメチロールプロパンエトキシトリアクリレート(TMPEOTA)、グリセリンプロポキシル化トリアクリレート(GPTA)、ペンタエリスリトールテトラアクリレート(PETA)、およびジペンタエリスリトールヘキサアクリレート(DPHA)のうちの1以上を含むものである、
請求項1から7のいずれか1項に記載の偏光子保護フィルム。 - 前記アクリレート系オリゴマーの重量平均分子量は、
1,000〜10,000g/molである、
請求項1から8のいずれか1項に記載の偏光子保護フィルム。 - 前記アクリレート系オリゴマーは、エチレンオキシド(ethylene oxide)、プロピレンオキシド(propylene oxide)、またはカプロラクトン(caprolactone)のうちの1種以上で変性したアクリレート系オリゴマーである、
請求項1から9のいずれか1項に記載の偏光子保護フィルム。 - 前記光硬化樹脂は、
多官能アクリレート系モノマーおよび5〜200%の伸び率を有するアクリレート系オリゴマーが2:8〜8:2の重量比で硬化されているものである、
請求項1から10のいずれか1項に記載の偏光子保護フィルム。 - 前記偏光子保護フィルムは、
光重合開始剤を追加的に含むものである、
請求項1から11のいずれか1項に記載の偏光子保護フィルム。 - 前記偏光子保護フィルムは、
有機粒子および無機粒子のうちの少なくとも1種または無機微粒子をさらに含むものである、
請求項1から12のいずれか1項に記載の偏光子保護フィルム。 - 580nm〜610nmの波長領域における平均光透過率が30%以下である、
請求項1から13のいずれか1項に記載の偏光子保護フィルム。 - 400〜550nmの波長領域における平均光透過率が35%以上である、
請求項1から14のいずれか1項に記載の偏光子保護フィルム。 - 480nm〜510nmの波長領域における平均光透過率が70%未満である、
請求項1から15のいずれか1項に記載の偏光子保護フィルム。 - 最大吸収波長が590〜600nmの範囲内である、
請求項1から16のいずれか1項に記載の偏光子保護フィルム。 - 前記偏光子保護フィルムの一面に備えられた表面層をさらに含む、
請求項1から17のいずれか1項に記載の偏光子保護フィルム。 - 前記表面層の厚さは、
前記偏光子保護フィルムの厚さ対比0.01〜1である、
請求項18に記載の偏光子保護フィルム。 - 前記表面層は、
有機粒子および無機粒子のうちの少なくとも1種または無機微粒子をさらに含むものである、
請求項18または19に記載の偏光子保護フィルム。 - 偏光子と、
前記偏光子の少なくとも一面に保護フィルムとして備えられた、
請求項1〜20のいずれか1項に記載の偏光子保護フィルムと
を含む
偏光板。 - バックライトユニットと、
前記バックライトユニットの一側に備えられた液晶パネルと、
前記バックライトユニットと前記液晶パネルとの間に備えられた、
請求項21に記載の偏光板とを含む
液晶ディスプレイ装置。 - 多官能アクリレート系モノマー、5〜200%の伸び率を有するアクリレート系オリゴマー、および最大吸収波長が580nm〜610nmの染料または顔料を含む組成物を離型フィルム上にコーティングするステップと、
前記組成物を硬化させて偏光子保護フィルムを形成するステップと、
前記離型フィルムを前記偏光子保護フィルムから剥離するステップと
を含む、
請求項1〜20のいずれか1項に記載の偏光子保護フィルムの
製造方法。
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WO2019066043A1 (ja) * | 2017-09-29 | 2019-04-04 | 富士フイルム株式会社 | 偏光板保護膜、偏光板、及び液晶表示装置 |
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WO2020199086A1 (zh) | 2019-04-01 | 2020-10-08 | 律胜科技股份有限公司 | 柔性显示覆盖基板 |
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CN107850712A (zh) | 2018-03-27 |
CN107850712B (zh) | 2021-03-12 |
KR20170032869A (ko) | 2017-03-23 |
US11003017B2 (en) | 2021-05-11 |
WO2017048077A1 (ko) | 2017-03-23 |
KR101987265B1 (ko) | 2019-06-11 |
JP6687184B2 (ja) | 2020-04-22 |
US20180210288A1 (en) | 2018-07-26 |
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