JP2021536035A - 光学デバイス - Google Patents
光学デバイス Download PDFInfo
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- JP2021536035A JP2021536035A JP2021508295A JP2021508295A JP2021536035A JP 2021536035 A JP2021536035 A JP 2021536035A JP 2021508295 A JP2021508295 A JP 2021508295A JP 2021508295 A JP2021508295 A JP 2021508295A JP 2021536035 A JP2021536035 A JP 2021536035A
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- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
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- Spectroscopy & Molecular Physics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Computer Graphics (AREA)
- Mechanical Engineering (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
Description
本出願は、2018年9月4日に提出された大韓民国特許出願第10−2018−0105602号に基づく優先権の利益を主張し、該当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組み込まれる。
本出願は、光学デバイスに関する。
正面位相差(Rin) = d X (nx − ny)
厚さ方向の位相差(Rth) = d X (nz − ny)
本明細書で言及する収縮性フィルムの収縮率は、TA社のDMA装備(Q800)を用いて下記の方式で測定した。試片は、幅が約5.3mmであり、長さが約10mmになるように製作し、前記試片の長手方向の両末端を測定装備のクランプに固定した後に収縮率を測定した。上記で試片の長さ10mmは、クランプに固定される部位を除いた長さである。上記のように試片をクランプに固定した後にcontrolled force modeでpreload force0.01N、昇温速度3.00℃/minあるいは減温速度−3.00℃/minの条件で測定した。−40℃で30分維持された後の試片の長さ(L−40)及び初期長さ(L0=10mm)を通じて−40℃での収縮率(100X(L−40−L0)/L0)を測定し、90℃で30分維持された後の試片の長さ(L90)及び初期長さ(L0=100)の測定温度で−40℃での収縮率(100X(L90−L0)/L0)を求めた。
温度:25℃start → 90℃(30分維持) → 25℃(30分維持) → 40℃(30分維持) → 25℃(30分維持)
光学デバイスの製造には下記の構成を用いた。
偏光子:PVA(polyvinylalcohol)系線形吸収型偏光子、
第1外郭基板:厚さ3.85mm、曲率:2400Rであるglass基板
第2外郭基板:厚さ0.55mm、曲率2400Rであるglass基板
カプセル化剤(接着フィルム):TPU(thermoplastic polyurethane)接着フィルム(厚さ:約0.38mm、製造社:Argotec社、製品名:ArgoFlex)
カプセル化剤(OCA):3M社、8146−5
収縮性フィルム:延伸PVA系偏光フィルム(MD(Mechanical Direction)高温(90℃)収縮率:1.32%、MD(Mechanical Direction)低温(−40℃)収縮率:1.32%、TD(Transverse Direction)高温(90℃)収縮率:0.17%、TD(Transverse Direction)低温(−40℃)収縮率:0.31%)
実施例1の収縮性フィルム、実施例1のTPU接着フィルム、実施例1の第2外郭基板、実施例1のOCAカプセル化剤、実施例1の能動液晶フィルム、実施例1のOCAカプセル化剤、実施例1のPVA系線形吸収型偏光子;実施例1のTPU接着フィルム及び実施例1の第1外郭基板を順次積層して積層体を製造した。前記積層体の製作時には、第1及び第2外郭基板の凸部が全て上部に向けるようにした。また、前記構造で収縮性フィルム(延伸PVA系偏光フィルム)のMDが前記PVA系線形吸収型偏光子の光吸収軸方向と垂直方向になるように積層体を製造した。その後、前記積層体を約100℃の温度及び2気圧程度の圧力でオートクレーブ工程を行って光学デバイスを製造した。
収縮性フィルム、実施例1のTPU接着フィルム、実施例1の第2外郭基板、実施例1のOCAカプセル化剤、実施例1の能動液晶フィルム、実施例1のOCAカプセル化剤、実施例1のPVA系線形吸収型偏光子;実施例1のTPU接着フィルム及び実施例1の第1外郭基板を順次積層して積層体を製造した。前記積層体の製作時には、第1及び第2外郭基板の凸部が全て上部に向けるようにした。
収縮性フィルム、実施例1のTPU接着フィルム、実施例1の第2外郭基板、実施例1のOCAカプセル化剤、実施例1の能動液晶フィルム、実施例1のOCAカプセル化剤、実施例1のPVA系線形吸収型偏光子;実施例1のTPU接着フィルム及び実施例1の第1外郭基板を順次積層して積層体を製造した。前記積層体の製作時には、第1及び第2外郭基板の凸部が全て上部に向けるようにした。
収縮性フィルムを適用しないこと以外は、実施例1と同一に光学デバイスを製造した。
収縮性フィルムを適用しないこと以外は、実施例2と同一に光学デバイスを製造した。
収縮性フィルムを適用しないこと以外は、実施例3と同一に光学デバイスを製造した。
実施例又は比較例で製造された光学デバイスの凹部位の中心部を図11に示したように支持(support)した後、ヒートテスト(Heat Test)に引き続きサイクリングテスト(Cylcing Test)を進行した後、常温で35日程度保管して気泡によるWhite spotの発生有無を確認した。
1サイクル=25℃ → 90℃(4時間維持) → −40℃(4時間維持) → 25℃
温度変化速度:昇温1℃/分、減温−1℃/分
測定湿度(相対湿度):90%
繰り返し回数:前記1サイクルを10回繰り返し(10cycle)
Claims (16)
- 第1外郭基板;前記第1外郭基板と対向配置されている第2外郭基板;前記第1及び第2外郭基板の間でカプセル化剤によりカプセル化された能動液晶フィルム又は偏光子を含み、
前記第1及び第2外郭基板のうちいずれか一つの基板と隣接して存在する収縮性フィルムをさらに含む、光学デバイス。 - 前記第1及び第2外郭基板の間で前記カプセル化剤によりカプセル化された能動液晶フィルム及び偏光子を含む、請求項1に記載の光学デバイス。
- 前記収縮性フィルムは、前記第1又は第2外郭基板の内側又は外側に存在する、請求項1または2に記載の光学デバイス。
- 前記収縮性フィルムと外郭基板の間に接着フィルムをさらに含む、請求項3に記載の光学デバイス。
- 前記接着フィルムは、ポリウレタン接着フィルム(TPU:ThermoplasticPolyurethane)、TPS(Thermoplastic Starch)フィルム、ポリアミド接着フィルム、アクリル系接着フィルム、ポリエステル接着フィルム、EVA(Ethylene Vinyl Acetate)接着フィルム、ポリエチレン又はポリプロピレンなどのポリオレフィン接着フィルム又はポリオレフィンエラストマーフィルムである、請求項4に記載の光学デバイス。
- 前記収縮性フィルムは、−40℃での収縮率が0.001%〜10%の範囲内である、請求項1から5の何れか一項に記載の光学デバイス。
- 前記収縮性フィルムは、90℃での収縮率が0.001%〜10%の範囲内である、請求項1から6の何れか一項に記載の光学デバイス。
- 前記収縮性フィルムは、延伸高分子フィルムである、請求項1から7の何れか一項に記載の光学デバイス。
- 前記収縮性フィルムは、セルロース高分子フィルム;ポリオレフィンフィルム;アクリル高分子フィルム;ポリエステルフィルム;ポリビニルアルコール系列のフィルム;PES(poly(ether sulfone))フィルム;PEEK(polyetheretherketon)フィルム;PPS(polyphenylsulfone)フィルム;PEI(polyetherimide)フィルム;PEN(polyethylenenaphthalate)フィルム;PI(polyimide)フィルム;PSF(polysulfone)フィルム;PAR(polyarylate)フィルム又はフッ素樹脂フィルムである、請求項1から8の何れか一項に記載の光学デバイス。
- 前記第1及び第2外郭基板のうち少なくとも一つの基板は曲面基板である、請求項1から9の何れか一項に記載の光学デバイス。
- 前記第1及び第2外郭基板は、全て曲面基板である、請求項1から10の何れか一項に記載の光学デバイス。
- 前記第1及び第2外郭基板の曲率の差が10%以内である、請求項11に記載の光学デバイス。
- 前記第1及び第2外郭基板は、同一の方向に屈曲されている、請求項11または12に記載の光学デバイス。
- 前記第1及び第2外郭基板の曲率半径は、それぞれ100R以上である、請求項11から13の何れか一項に記載の光学デバイス。
- 前記カプセル化剤は、前記能動液晶フィルム又は偏光子のそれぞれの上部及び下部と全ての側面に存在する、請求項1から14の何れか一項に記載の光学デバイス。
- 前記カプセル化剤は、ポリウレタン接着フィルム(TPU:ThermoplasticPolyurethane)、TPS(Thermoplastic Starch)フィルム、ポリアミド接着フィルム、アクリル系接着フィルム、ポリエステル接着フィルム、EVA(Ethylene Vinyl Acetate)接着フィルム、ポリエチレン又はポリプロピレンなどのポリオレフィン接着フィルム又はポリオレフィンエラストマーフィルムである、請求項1から15の何れか一項に記載の光学デバイス。
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