WO2014185322A1 - Dispositif d'affichage à cristaux liquides, plaque de polarisation et film de protection de polariseur - Google Patents

Dispositif d'affichage à cristaux liquides, plaque de polarisation et film de protection de polariseur Download PDF

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Publication number
WO2014185322A1
WO2014185322A1 PCT/JP2014/062301 JP2014062301W WO2014185322A1 WO 2014185322 A1 WO2014185322 A1 WO 2014185322A1 JP 2014062301 W JP2014062301 W JP 2014062301W WO 2014185322 A1 WO2014185322 A1 WO 2014185322A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
polarizer protective
protective film
polarizing plate
polarizer
Prior art date
Application number
PCT/JP2014/062301
Other languages
English (en)
Japanese (ja)
Inventor
村田　浩一
佐々木　靖
Original Assignee
東洋紡株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 東洋紡株式会社 filed Critical 東洋紡株式会社
Priority to JP2014525243A priority Critical patent/JPWO2014185322A1/ja
Priority to KR1020157034445A priority patent/KR102385405B1/ko
Priority to CN201480027949.9A priority patent/CN105229501B/zh
Publication of WO2014185322A1 publication Critical patent/WO2014185322A1/fr

Links

Classifications

    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • 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
    • G02B5/305—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 including organic materials, e.g. polymeric layers
    • 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
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/202—LCD, i.e. liquid crystal displays

Definitions

  • a TAC film As the polarizer protective film, a TAC film has been conventionally used. However, as described in the background art, a polarizer protective film made of a polyester film has attracted attention as an alternative.
  • the polarizing plate has a structure in which a polarizer is sandwiched between two polarizer protective films.
  • two polarizing plates made of polyester film of at least one of the two polarizer protective films are prepared and arranged so that the two polarizing plates are in a crossed Nicols environment, there is a slight light leakage.
  • This invention makes it one subject to provide the polarizer protective film which consists of a polyester film which can suppress the above-mentioned slight light leakage.
  • the plane orientation degree is preferably 0.08 or more, and more preferably 0.1 or more. If the degree of plane orientation is less than 0.08, the film thickness varies, and the retardation value may be non-uniform in the film plane.
  • the present invention in order to improve the adhesiveness with the polarizer, it has an easy-adhesion layer mainly composed of at least one of a polyester resin, a polyurethane resin or a polyacrylic resin on at least one side of the oriented polyester film.
  • the “main component” refers to a component that is 50% by mass or more of the solid components constituting the easy-adhesion layer.
  • the coating solution used for forming the easy-adhesion layer is preferably an aqueous coating solution containing at least one of a water-soluble or water-dispersible copolymerized polyester resin, an acrylic resin, and a polyurethane resin.
  • the easy-adhesion layer can be obtained by applying the coating solution on one or both sides of an unstretched film or a uniaxially stretched film in the longitudinal direction, drying at 100 to 150 ° C., and stretching in the lateral direction.
  • the final coating amount of the easy adhesion layer is preferably controlled to 0.05 to 0.2 g / m 2 . If the coating amount is less than 0.05 g / m 2 , the adhesion with the resulting polarizer may be insufficient. On the other hand, when the coating amount exceeds 0.2 g / m 2 , blocking resistance may be lowered.
  • the application quantity of an easily bonding layer on both surfaces may be the same or different, and can be independently set within the above range.
  • the polyester film After the polyester film has been stretched in the longitudinal and transverse directions, it is possible to obtain a slit roll by cutting both edges into a mill roll through a heat treatment step and slitting as necessary.
  • the range of 33% at both ends of the mill roll (33% from the right end of the film and 33% from the left end of the film) tends to have a particularly high difference in thermal shrinkage in the oblique direction. Therefore, for example, in the case of off-line annealing, it is preferable to adjust the temperature and time of the annealing process to be sufficiently secured.
  • the two polarizing plates thus obtained were placed in a crossed Nicol state so that the polyester film was outside the two polarizers, and the maximum at a wavelength of 550 to 600 nm was measured using a spectrophotometer V7100 manufactured by JASCO Corporation. The light transmittance was measured. ⁇ : Maximum light transmittance is 0.02% or less ⁇ : Maximum light transmittance exceeds 0.02%
  • the biaxial refractive index anisotropy ( ⁇ Nxy) was determined by the following method.
  • the unstretched film on which this coating layer was formed was guided to a tenter stretching machine, guided to a hot air zone at a temperature of 125 ° C. while being gripped by a clip, and stretched 4.0 times in the width direction.
  • a mill roll made of a uniaxially oriented PET film having a film thickness of about 50 ⁇ m was obtained by processing at a temperature of 225 ° C. for 30 seconds while keeping the width stretched in the width direction, and cutting and removing both edges. .
  • This mill roll was divided into three equal parts to obtain three slit rolls (L, C, R). For each slit roll, two types were prepared: one that had been subjected to an offline annealing treatment at 90 ° C. for 5 minutes, and one that wanted to be subjected to the offline annealing treatment.
  • Table 3 shows the results of rainbow-eye observation and tear strength measurement of the liquid crystal display device manufactured as described above using the polarizer protective films 1 to 15 (samples processed by off-line annealing).

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)
  • Chemical & Material Sciences (AREA)
  • Liquid Crystal (AREA)
  • Manufacturing & Machinery (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Mathematical Physics (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)

Abstract

L'invention concerne un film de protection de polariseur comprenant un film polyester pouvant supprimer les pertes de lumière même dans des cas où deux polariseurs sont disposés sous une forme de Nicols croisés. Un film de protection de polariseur comprend un film polyester et est caractérisé en ce que la valeur absolue de la différence entre la contraction thermique à une orientation de 45° à partir du sens d'écoulement du film et la contraction thermique à une orientation de -45° à partir du sens d'écoulement du film, n'est pas supérieure à 0,4 %.
PCT/JP2014/062301 2013-05-14 2014-05-08 Dispositif d'affichage à cristaux liquides, plaque de polarisation et film de protection de polariseur WO2014185322A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2014525243A JPWO2014185322A1 (ja) 2013-05-14 2014-05-08 液晶表示装置、偏光板及び偏光子保護フィルム
KR1020157034445A KR102385405B1 (ko) 2013-05-14 2014-05-08 액정표시장치, 편광판 및 편광자 보호 필름
CN201480027949.9A CN105229501B (zh) 2013-05-14 2014-05-08 液晶显示装置、偏光板和偏振片保护膜

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013102467 2013-05-14
JP2013-102467 2013-05-14

Publications (1)

Publication Number Publication Date
WO2014185322A1 true WO2014185322A1 (fr) 2014-11-20

Family

ID=51898300

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/062301 WO2014185322A1 (fr) 2013-05-14 2014-05-08 Dispositif d'affichage à cristaux liquides, plaque de polarisation et film de protection de polariseur

Country Status (5)

Country Link
JP (4) JPWO2014185322A1 (fr)
KR (1) KR102385405B1 (fr)
CN (1) CN105229501B (fr)
TW (1) TWI530395B (fr)
WO (1) WO2014185322A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016143026A (ja) * 2015-02-05 2016-08-08 住友化学株式会社 複合偏光板及び液晶表示装置
JP2019091059A (ja) * 2013-05-14 2019-06-13 東洋紡株式会社 液晶表示装置、偏光板及び偏光子保護フィルム
JP2020012087A (ja) * 2018-07-20 2020-01-23 東洋紡株式会社 フレキシブルディスプレイの表面保護フィルム用ポリエステルフィルム
JP2020115211A (ja) * 2013-09-10 2020-07-30 東洋紡株式会社 液晶表示装置、偏光板及び偏光子保護フィルム
JP7199584B1 (ja) 2022-03-31 2023-01-05 住友化学株式会社 偏光板

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2017170527A1 (ja) * 2016-03-29 2018-10-18 日東電工株式会社 フレキシブル偏光膜、その製造方法および画像表示装置
KR101955763B1 (ko) * 2016-07-29 2019-03-07 삼성에스디아이 주식회사 편광판 및 이를 포함하는 광학표시장치
KR102363874B1 (ko) * 2018-10-18 2022-02-15 주식회사 엘지화학 편광판, 액정 패널 및 디스플레이 장치
WO2020085308A1 (fr) * 2018-10-26 2020-04-30 東洋紡株式会社 Film d'alignement pour transfert de couche d'alignement de composé de cristaux liquides
JP2022163804A (ja) * 2021-04-15 2022-10-27 住友化学株式会社 偏光板、積層体、及び表示装置

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* Cited by examiner, † Cited by third party
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JPH0933722A (ja) * 1995-07-14 1997-02-07 Fuji Photo Film Co Ltd 偏光板及び液晶表示装置
JP2004226734A (ja) * 2003-01-23 2004-08-12 Toray Ind Inc 偏光膜用支持体フィルムおよび偏光板
WO2011162198A1 (fr) * 2010-06-22 2011-12-29 東洋紡績株式会社 Dispositif d'affichage à cristaux liquides, plaque de polaristion et film protecteur de polarisateur
JP2012003007A (ja) * 2010-06-16 2012-01-05 Toyobo Co Ltd 偏光板離型用二軸延伸ポリエチレンテレフタレートフィルム
JP2012220879A (ja) * 2011-04-13 2012-11-12 Toyobo Co Ltd 偏光子保護用二軸配向ポリエチレンテレフタレートフィルム

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JP2004205773A (ja) 2002-12-25 2004-07-22 Konica Minolta Holdings Inc 偏光板、その製造方法及びこれを用いた液晶表示装置
JP4352705B2 (ja) 2003-01-14 2009-10-28 コニカミノルタホールディングス株式会社 偏光板保護フィルムとそれを用いた偏光板及び液晶表示装置
EP1602683A4 (fr) * 2003-03-11 2006-04-19 Mitsubishi Polyester Film Corp Film polyester a orientation biaxiale et film de demoulage
JP2005174974A (ja) * 2003-12-08 2005-06-30 Matsushita Electric Ind Co Ltd 積層圧電体部品の製造方法
JP5376773B2 (ja) * 2007-04-12 2013-12-25 ユニチカ株式会社 ポリアミド樹脂フィルム
JP2009145450A (ja) * 2007-12-12 2009-07-02 Toyobo Co Ltd 表面光拡散性ポリエステルフィルム
JP4785944B2 (ja) * 2008-04-16 2011-10-05 日東電工株式会社 光学表示装置の製造方法
JP5262330B2 (ja) * 2008-06-13 2013-08-14 コニカミノルタアドバンストレイヤー株式会社 光学フィルムの製造方法、光学フィルム及び光学フィルムの製造装置
KR20100078564A (ko) * 2008-12-30 2010-07-08 동우 화인켐 주식회사 박막형 편광판 및 이것이 구비된 액정표시장치
JP5522164B2 (ja) * 2009-02-26 2014-06-18 コニカミノルタ株式会社 光学フィルムの製造方法
JP5451186B2 (ja) 2009-06-01 2014-03-26 帝人デュポンフィルム株式会社 偏光子支持基材用一軸配向芳香族ポリエステルフィルム
JP5451215B2 (ja) * 2009-06-29 2014-03-26 帝人デュポンフィルム株式会社 偏光子支持基材用フィルム
JP5844027B2 (ja) * 2009-11-18 2016-01-13 東洋紡株式会社 偏光板または位相差板の表面に貼り合わせて保護するためのポリエチレンテレフタレートフィルム
KR20140080421A (ko) * 2012-12-20 2014-06-30 제일모직주식회사 편광판 및 이를 포함하는 액정표시장치
CN105229501B (zh) * 2013-05-14 2019-08-06 东洋纺株式会社 液晶显示装置、偏光板和偏振片保护膜

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0933722A (ja) * 1995-07-14 1997-02-07 Fuji Photo Film Co Ltd 偏光板及び液晶表示装置
JP2004226734A (ja) * 2003-01-23 2004-08-12 Toray Ind Inc 偏光膜用支持体フィルムおよび偏光板
JP2012003007A (ja) * 2010-06-16 2012-01-05 Toyobo Co Ltd 偏光板離型用二軸延伸ポリエチレンテレフタレートフィルム
WO2011162198A1 (fr) * 2010-06-22 2011-12-29 東洋紡績株式会社 Dispositif d'affichage à cristaux liquides, plaque de polaristion et film protecteur de polarisateur
JP2012220879A (ja) * 2011-04-13 2012-11-12 Toyobo Co Ltd 偏光子保護用二軸配向ポリエチレンテレフタレートフィルム

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019091059A (ja) * 2013-05-14 2019-06-13 東洋紡株式会社 液晶表示装置、偏光板及び偏光子保護フィルム
JP2021002070A (ja) * 2013-05-14 2021-01-07 東洋紡株式会社 液晶表示装置、偏光板及び偏光子保護フィルム
JP7154138B2 (ja) 2013-05-14 2022-10-17 東洋紡株式会社 液晶表示装置、偏光板及び偏光子保護フィルム
JP2020115211A (ja) * 2013-09-10 2020-07-30 東洋紡株式会社 液晶表示装置、偏光板及び偏光子保護フィルム
JP2016143026A (ja) * 2015-02-05 2016-08-08 住友化学株式会社 複合偏光板及び液晶表示装置
JP2020012087A (ja) * 2018-07-20 2020-01-23 東洋紡株式会社 フレキシブルディスプレイの表面保護フィルム用ポリエステルフィルム
JP7314484B2 (ja) 2018-07-20 2023-07-26 東洋紡株式会社 フレキシブルディスプレイの表面保護フィルム用ポリエステルフィルム
JP7199584B1 (ja) 2022-03-31 2023-01-05 住友化学株式会社 偏光板
JP2023150317A (ja) * 2022-03-31 2023-10-16 住友化学株式会社 偏光板

Also Published As

Publication number Publication date
CN105229501B (zh) 2019-08-06
JPWO2014185322A1 (ja) 2017-02-23
TWI530395B (zh) 2016-04-21
JP2021002070A (ja) 2021-01-07
JP2021192101A (ja) 2021-12-16
JP7264191B2 (ja) 2023-04-25
JP7154138B2 (ja) 2022-10-17
KR102385405B1 (ko) 2022-04-08
JP2019091059A (ja) 2019-06-13
CN105229501A (zh) 2016-01-06
KR20160007548A (ko) 2016-01-20
TW201446521A (zh) 2014-12-16

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