JP2005181450A - 複屈折フィルムの製造方法、およびそれを用いた光学フィルムおよび画像表示装置 - Google Patents
複屈折フィルムの製造方法、およびそれを用いた光学フィルムおよび画像表示装置 Download PDFInfo
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- JP2005181450A JP2005181450A JP2003418558A JP2003418558A JP2005181450A JP 2005181450 A JP2005181450 A JP 2005181450A JP 2003418558 A JP2003418558 A JP 2003418558A JP 2003418558 A JP2003418558 A JP 2003418558A JP 2005181450 A JP2005181450 A JP 2005181450A
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/42—Polarizing, birefringent, filtering
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
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Abstract
【解決手段】 ポリマーフィルムを延伸する工程において、前記ポリマーフィルムを幅方向に延伸すると同時に、その長手方向に収縮させ、延伸前のポリマーフィルムの幅方向の長さおよび長手方向の長さをそれぞれ1とした場合における、前記延伸による幅方向の長さの変化倍率(STD)と、前記収縮による長手方向の長さの変化倍率(SMD)とが下記式(1)を満たすことによって複屈折フィルムを製造する。
(1/STD)1/2 ≦ SMD <1 ・・・(1)
【選択図】 なし
Description
T.Yamada et al. Intn. Polym. Process., Vo.X, Issue 4, 334-340 (1995)
長手方向の変形 幅方向の変形 厚み方向の変形
従来 :幅方向延伸 1 STD 1/STD
従来 :長手方向延伸 SMD STD=(1/SMD) 1/2 (1/SMD) 1/2
本発明:延伸+収縮 (1/STD) 1/2 ≦SMD STD (1/STD) 1/2
「SMD=1」、すなわち長手方向の寸法が変化しない場合、ボーイング現象が発生する問題が解決できず、「(1/STD)1/2 > SMD」となると、幅方向にシワが発生するという外観上の問題がある。
自動複屈折計(商品名KOBRA-21ADH;王子計測機器社製)を用いて、波長590nmにおける値を測定した。
瞬間マルチ測光システム(商品名MCPD-2000;大塚電子社製製)を用いて、複屈折層の膜厚を測定した。
幅方向のSTDを1.2倍として一軸延伸を行い、長手方向を収縮させない以外は、前記実施例1と同様にして複屈折フィルムを製造し、その特性を同様にして調べた。これらの結果を下記表2に示す。なお、SMD=1であった。
幅方向のSTDを1.2倍、長手方向のSMDを0.9倍として、(1/STD)1/2を0.913とした以外は、前記実施例1と同様にして複屈折フィルムを製造し、その特性を同様にして調べた。これらの結果を下記表2に示す。なお、(1/STD)1/2>SMDであった。
幅方向のSTDを1.1倍として一軸延伸を行い、長手方向を収縮させない以外は、前記実施例2と同様にして複屈折フィルムを製造し、その特性を同様にして調べた。これらの結果を下記表2に示す。なお、SMD=1であった。
幅方向のSTDを1.1倍、長手方向のSMDを0.9倍として、(1/STD)1/2を0.913とした以外は、前記実施例2と同様にして複屈折フィルムを製造し、その特性を同様にして調べた。これらの結果を下記表2に示す。なお、(1/STD)1/2>SMDであった。
配向軸角バラツキ Δnd Δndバラツキ Rth Rthバラツキ 外観
(°) (nm) (%) (nm) (%)
実施例1 3.6 218.6 ±10.5 284.8 ±12.1 異常なし
比較例1 20.6 173.7 ±18.2 394.1 ±22.5 異常なし
比較例2 8.1 235.1 ±15.3 301.4 ±17.2 シワ発生
実施例2 2.3 49.7 ± 3.2 250.7 ± 3.0 異常なし
比較例3 11.3 50.9 ±10.4 309.2 ±25.5 異常なし
比較例4 4.3 63.0 ±10.1 261.4 ± 8.5 シワ発生
Claims (10)
- ポリマーフィルムを延伸する工程を含む複屈折フィルムの製造方法であって、
前記延伸工程において、ポリマーフィルムを幅方向に延伸すると同時に、その長手方向に収縮させ、延伸前のポリマーフィルムの幅方向の長さおよび長手方向の長さをそれぞれ1とした場合における、前記延伸による幅方向の長さの変化倍率(STD)と、前記収縮による長手方向の長さの変化倍率(SMD)とが下記式(1)を満たすことを特徴とする複屈折フィルムの製造方法。
(1/STD)1/2 ≦ SMD <1 ・・・(1) - 基材上にポリマーフィルムを直接形成した後、前記ポリマーフィルムに延伸および収縮処理を同時に施す請求項1記載の製造方法。
- 前記基材に延伸および収縮処理を同時に施すことによって、前記基材上のポリマーフィルムを延伸および収縮させる請求項2記載の製造方法。
- 請求項1〜3のいずれか一項に記載の製造方法により得られた複屈折フィルム。
- 請求項4記載の複屈折フィルムを含む光学フィルム。
- さらに、偏光子を含む請求項5記載の光学フィルム。
- さらに透明保護フィルムを含み、前記偏光子の少なくとも一方の表面に前記透明保護フィルムが配置されている請求項6記載の光学フィルム。
- 液晶セルの少なくとも一方の表面に請求項5〜7のいずれか一項に記載の光学フィルムが配置された液晶パネル。
- 請求項8記載の液晶パネルを含む液晶表示装置。
- 請求項5〜7のいずれか一項に記載の光学フィルムを含む画像表示装置。
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JP2003418558A JP2005181450A (ja) | 2003-12-16 | 2003-12-16 | 複屈折フィルムの製造方法、およびそれを用いた光学フィルムおよび画像表示装置 |
PCT/JP2004/014479 WO2005059609A1 (ja) | 2003-12-16 | 2004-10-01 | 複屈折フィルムの製造方法、それを用いた光学フィルムおよび画像表示装置 |
CNB2004800137136A CN100419474C (zh) | 2003-12-16 | 2004-10-01 | 双折射薄膜的制备方法以及使用该双折射薄膜的光学膜和图像显示装置 |
KR1020057019368A KR100718860B1 (ko) | 2003-12-16 | 2004-10-01 | 복굴절 필름의 제조 방법, 그것을 사용한 광학 필름 및화상 표시 장치 |
US10/554,224 US7833457B2 (en) | 2003-12-16 | 2004-10-01 | Method for producing birefringent film, optical film and image display device using the same |
TW093130061A TW200523646A (en) | 2003-12-16 | 2004-10-05 | Method for producing a birefringent film, optical film and imagine display device |
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2003
- 2003-12-16 JP JP2003418558A patent/JP2005181450A/ja active Pending
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2004
- 2004-10-01 US US10/554,224 patent/US7833457B2/en not_active Expired - Fee Related
- 2004-10-01 WO PCT/JP2004/014479 patent/WO2005059609A1/ja active IP Right Grant
- 2004-10-01 CN CNB2004800137136A patent/CN100419474C/zh not_active Expired - Fee Related
- 2004-10-01 KR KR1020057019368A patent/KR100718860B1/ko not_active Expired - Fee Related
- 2004-10-05 TW TW093130061A patent/TW200523646A/zh not_active IP Right Cessation
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JP2015111206A (ja) * | 2013-12-06 | 2015-06-18 | 東洋紡株式会社 | 偏光子保護フィルム、偏光板及び液晶表示装置 |
JP2020003781A (ja) * | 2018-06-22 | 2020-01-09 | 住友化学株式会社 | 樹脂フィルム及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US7833457B2 (en) | 2010-11-16 |
KR100718860B1 (ko) | 2007-05-16 |
US20060275559A1 (en) | 2006-12-07 |
TW200523646A (en) | 2005-07-16 |
WO2005059609A1 (ja) | 2005-06-30 |
CN1791817A (zh) | 2006-06-21 |
CN100419474C (zh) | 2008-09-17 |
TWI355543B (ja) | 2012-01-01 |
KR20060004666A (ko) | 2006-01-12 |
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