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TW200931083A - A polarizer and a liquid crystal display apparatus - Google Patents

A polarizer and a liquid crystal display apparatus Download PDF

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Publication number
TW200931083A
TW200931083A TW097146560A TW97146560A TW200931083A TW 200931083 A TW200931083 A TW 200931083A TW 097146560 A TW097146560 A TW 097146560A TW 97146560 A TW97146560 A TW 97146560A TW 200931083 A TW200931083 A TW 200931083A
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TW
Taiwan
Prior art keywords
film
polarizing plate
liquid crystal
resin
polyethylene terephthalate
Prior art date
Application number
TW097146560A
Other languages
Chinese (zh)
Inventor
Narutoshi Hayashi
Hirohiko Yakabe
Atsushi Higo
Kiyoshi Muto
Original Assignee
Sumitomo Chemical Co
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Publication date
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Publication of TW200931083A publication Critical patent/TW200931083A/en

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Classifications

    • 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
    • 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
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • 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
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
    • C08L29/02—Homopolymers or copolymers of unsaturated alcohols
    • C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • 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
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/21—Anti-static
    • 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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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Medicinal Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Polymers & Plastics (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Mathematical Physics (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Polarising Elements (AREA)

Abstract

This invention provides a polarizer which contains a polarizing film formed of a polyvinyl alcohol resin and a stretched polyethylent terephthalate film laminated on one side of the polarizing film with an adhesive layer interposed therebetween.

Description

200931083 . 六、發明說明： 【發明所屬之技術領域】 本發明是有關在由聚乙烯醇樹脂所成之偏光膜 * (polarizing fi lm)的單侧，隔介接合劑層（adhesive layer) 而積層（laminate)有延伸（stretched)聚對苯二甲酸乙二 酯薄膜之偏光板（polarizer)，及使用該偏光板之液晶顯示 裝置。 【先前技術】 〇 偏光板通常具備有在由經使二色性色素（dichroism dyestuff)吸附定向（adsorption orientation)之聚乙婦 醇系樹脂所成之偏光膜的單侧或兩側，隔著接合劑層而積 層有保護膜（例如，可以三乙醯基纖維素所代表之醋酸纖維 素系的保護膜）之結構。具備此種積層結構之偏光板，需要 時’隔著其他光學薄膜而以膠結劑貼合於液晶單元片 (liquid crystal cell)上，而作成液晶顯示裝置的構成部 二件。 口 液晶顯示裝置，可作成液晶電視、液晶監視器、個人 電腦等薄型的顯示裝置，而用途急速在擴大中。特別是液 晶電視的市場擴大極為顯著，同時，對低成本化之要求亦 很強烈。液晶電視用的偏光板，通常，係在由經使二色性 色素吸附疋向之聚乙烯醇系樹脂所成之偏光膜的兩側，以 水系接合劑積層有三乙醯基纖維素薄膜（TAC薄膜）所成 者，並於其偏光板的單側外面，經膠黏劑而積層有相位差 膜（phase difference film) 〇 320832 3 200931083 破酸板上Τ差媒者，-般雖使用聚 工品等，樹脂薄膜的延伸加 n w 時則多使用在高溫下之相位差 不㈡非常少之由環烯烴樹脂薄膜之 稀烴樹脂薄膜所成之相位差膜=合二 樣“ ηΪ㈣提升、製品成本的降低起見，設法減少所 構成件件數，或簡化製造過程等之方法，例如，曰本 Ο 專利特開平8~43812號公報（專利文獻1)中，揭示有一種 具有相位差功能（phase differenee funetiQn)之環婦煙系 (降冰片稀系）樹脂薄膜/偏光膜/TAC薄膜的積層結構。 又，日本專利特開2005-70140號公報（專利文獻2)、 曰本專利特開2005-181817號公報（專利文獻3)以及曰本 專利特開2005-208456號公報（專利文獻4)中，記載有將 由聚乙烯醇系樹脂所成偏光膜與環烯烴系保護膜，使用聚 胺基曱酸酯（urethane)系的水系接合劑加以接合之作法。 ❹ 【發明内容】 [發明所欲解決之課題] 在大晝面液晶電視用途方面，作成薄型化之牆壁掛式 電視的需求愈來愈顯著化，惟此時’作為於液晶面板 (liquid crystal panel)使用之組件時，啣存在有如下述 各項問題。 (1)對應於液晶面板的薄型大畫面化之需求，需要補強 面板的強度。 (2)對應於液晶電視的薄型化之需求，需要所使用之構 320832 4 200931083 件的薄壁化。 ⑶液日日面板與背面的m统（backlight system) 之間的間隙變窄，，、，t m； 的接觸所引起之圓：f有需要防止因液晶面板與背光系統 頓環(Ne_ng)狀的亮度色度不均句性^响 gJ。又’由於聚對苯二甲酸乙二酯薄胺交 贡電之故’在進行偏光板貼合於液晶面板之過程中容易 生液晶面板中的液晶的定向魏’並 Ο Ο 又結果不能顯示正常晝面等問題。 本發明係為了姑、^ 供-種能對應4^上述課題賴發者，其目的在於提 者，M p# t P之液晶面板的薄型化並能加以補強 b 使用該補強0口口之液晶面板與背光系銥Μ 觸之偏光板、更能左目,人 a 尤糸統的接 之產生、製品收率面板之過程中’防止靜電 顯示裝置，而該以及採用該偏光板之液晶 度不均句，且目視性優異的液晶顯示裝置，察時的色 [用以解決課題之手段] 本發明人等為了解決此種課題而專心研究之站 t如作成於聚乙鱗樹賴紅偏域 二果發 5劑層而積層有延伸聚對苯二甲酸乙二㈣1隔著接 J製得即使是薄型，仍_械性強度撕造，則 =視性❹的絲板之事實料成本㈣撕=優異， 明係如下所述者。 ，本發 士、1. 一種偏光板，其特徵為：具備有由聚酸 成偏光膜、及於偏光膜的單側隔著接合劑層而積層^腸所 200931083 聚對苯二曱酸乙二酯薄膜者。 2. 如上述1記載之偏光板’其中，於積層有延伸聚對 苯二甲酸乙二酯薄膜的偏光膜之侧的相反面，再具有已積 層之防炫光層（glare-reducing layer)。 3. 如上述1或2記栽之偏光板，其中，延伸聚對苯二 甲酸乙二酯薄膜的模糊度（haZe，有稱為霧度之情形），在 3至40%的範圍。 〇 〇 4·如上述第1至3記載之偏光板，其中，於偏光膜之 積層有延伸聚對苯二甲酸乙二酯薄膜之侧的相反側，再具 有已積層之保護膜或光學補償膜（。州⑶i _pensati〇n film) 〇 膜係纖維素二4::己载之偏光板，其中，該光學補償 6.如上述1 至4 .、 膜係7降冰片烯系裁之偏光板，其中，該光學補償 者。.、“至6所記載之偏光板 ，其係含有抗靜電劑 8 ·如上述1至7 積層有延伸聚對苯二::载之，光板 ’其中，於偏光膜之 面，再具有膠黏劑層。馱乙〜酯薄膜之一面的相反側外 又本發明，係提供 上述膠勘劑層之本發明種夜晶顯示裝置，其係具備：有 液晶片之液晶面板。、偏光板，隔著膠黏劑層而貼合於 [發明之致果] 320832 6 200931083 本發明之偏光板，係機械性強度，特別是撕裂性優異， 又可達成所適用之液晶面板的機械性強度提升、薄型化， 再者，可防止使用該偏光板之液晶面板與背光系統的接觸 者。又，採用此種本發明之偏光板之本發明之液晶顯示裝 置，可適合適用於大晝面液晶電視用液晶顯示裝置，特別 是能懸掛牆上之液晶電視用液晶顯示裝置。 [發明之最佳實施形態] 可用於本發明之偏光板的偏光膜，具體而言，係使在 〇 已單向延伸（uniaxial stretched)聚乙烯醇樹脂薄膜吸附 定向二色性色素者。聚乙烯醇樹脂，係藉由聚酯酸乙燐樹 脂（PVAC)之皂化而製得者。作為聚醋酸乙烯樹腊者，係除 了為醋酸乙婦醋的单獨聚合物（homo p〇 1 之聚醋酸乙 烯之外’醋酸乙烯酯及能與此進行共聚合之其他單體 (monomer)的共聚物，可例舉：乙烯-醋酸乙烯共聚物等。 能與醋酸乙烯酯進行共聚合之其他單體者，可例舉：不飽 ❹和羧酸鹽、烯烴類、乙烯基醚類、不飽和磺酸類，具有銨 基之丙烯醯胺類等。 聚乙烯醇樹脂的皂化度（犯1)011丨^(^1：1〇11(1坪1：洗），通 常為85至100莫耳％ ’較佳為98莫耳％以上。此等聚乙烯 醇樹脂亦可為經改質者，例如，經亦可使用以駿類改質之 聚乙婦醇縮甲駿、聚乙_縮乙酸、聚乙缚_丁酸等而 得。又聚乙烯醇系樹脂的聚合度，通常為至画〇的 範圍内，較佳為15〇〇至5〇〇〇的範圍内。 將此種聚乙烯醇樹脂加以製膜者，可作為偏光膜的原 320832 200931083 胚膜使用。進行聚乙埽醇樹脂之 可依從來周知的適當方法製膜。由聚 ^無特別限定， 胚膜的膜厚，並盔特为u 、 埽醇樹脂所成之原 程度。 例如，為^至150心 偏光膜，通常係經過：使 性奋 樹脂薄膜之染色而t色 =行聚乙烯醇 Ο =:=進行吸附有二色性色素之聚_系 Γ==(蝴酸處理過程)，以及在使_酸 去^彳〇以水洗之過程（水洗處理過程）所製造 嘗0 :：製造偏光膜之時，通常，聚乙婦醇樹脂薄膜會 被早向延伸，惟該單向延伸，可於染色處理過程之前實施， 亦可於染色處理過程中實施，亦可於染色處理過程之後實 施。如在染色處理過程後實施單向延伸時，則該單向延伸， 可於硼酸處理過程之前實施，亦可於硼酸處理過程中實 ❾施。當然，亦能於此等複數個階段實施單向延伸。單向延 伸，可作成在圓周速度相異的輥子（『〇11)間往單向延伸之 方式，亦可使用熱輥子作成往單向延伸之方式。又，可為 在大氣中實施延伸之乾式延伸，亦可為使用溶劑在使其膨 潤之狀態下實施延伸之混式延伸。延伸培率，通常為3炱 8倍程度。 染色處理過程中之使用二色性色素的聚乙烯醇樹脂薄 膜之染色，例如，係將聚乙烯醇樹脂薄膜，浸潰於含有二 色性色素之水溶液中實施者。作為二色性色素者，例如讦 8 320832 200931083 使用碘、二色性染料等。二色性染料，可包括：C. I. DIRECT RED 39(染料索引直接紅39號）等由雙偶氮化合物（bisazo compound)所成之二色性直接染料，由三偶氮、四偶氮等的 化合物所成之二色性直接染料。在此，聚乙烯醇樹脂薄膜， 較佳為在染色處理之前實施水中之浸潰處理。 如作為二色性色素而使用碘時，通常係採用於含有碘 及碘化鉀之水溶液中浸潰聚乙烯醇樹脂薄膜以染色之方 法。於該水溶液中之碘含量通常係對每100重量份水為 ❹ 0. 01至1重量份，碘化鉀之含量，通常是每100重量水為 0.5至20重量份。如作為二色性色素而使用蛾時，染色中 所用之水溶液的溫度，通常為20至40°C，又於此水溶液 中的浸潰時間（染色時間），通常為20至1800秒鐘。 另一方面，如作為二色性色素而使用二色性染料時， 則通常採用於含有水溶液二色性染料之水溶液中，使聚乙 烯醇樹脂薄膜浸潰而進行染色之方法。於該水溶液中之二 0 色性染料的含量，通常係對水每100重量份為1χ1(Γ4至10 重量份，較佳為1χ10_3至1重量份，特佳為1χ1(Γ3至lxio—2 重量份。該水溶液中，可作為染色助劑而含有硫酸納等的 無機鹽。如作為二色性色素而使用二色性染料時，則為染 色所用之染料水溶液的温度，通常為20至80°C，又，於 該水溶液中的浸潰時間（染色時間），通常為10至1800秒 鐘0 硼酸處理過程，係將經二色性色素染色之聚乙烯醇樹 脂薄膜，浸潰於含硼酸之水溶液中而實施者。於含硼酸之 9 320832 200931083 mm酸的量，係對水每⑽重量份 15重篁伤’較隹為5至12重量份。 〜至 時，處理過程中之二色性色素而使用碟 ㈣化^處理雜之含職之水溶液，較佳為含 水每水溶液中之•化鉀的量，對 η重量份。於含15重量份，較佳為5至 於各硼酸之水溶液中的浸潰時 Ο Ο ^,15〇,6〇〇^ Γ“Γ酸之水溶液的温度，通常為抓以上，較佳： 50至85C’更佳為6。至8吖。 較佳為 聚乙處係將上述之魏處理後的 ^^ ^薄膜，例如藉由浸潰於水中，以水洗處理。 通!理中之水的溫度，通常為5至4〇<t，浸潰時間， g二二至丨2〇秒鐘。水洗處理後，通常實施乾燥處理， ^ 光膜。乾燥處理，例如係適冷採用熱風乾燥機、 t夕線加熱器等來實施。乾燥處理的溫度通常為30至 至_秒鐘，較=Γ。乾燥處理的時間，通常為60 卑父佳為120至600秒鐘。 如此方式’對聚乙烯醇樹脂薄膜實施單向延伸，依二 色!·生色素之染色、硼酸處理以及水洗處理，即可得偏光膜。 該偏光膜的厚度’通常為在5至40/zm的範圍内。本發明 偏光板具備在此種偏光膜的單侧，隔著接合劑層而積 層有例如雙向延伸聚對苯二曱酸乙二酯薄膜般的延伸聚對 苯二甲酸乙二酯薄膜之結構。 10 320832 200931083 可用於本發明之延伸聚對苯二曱酸乙二酯薄膜，係機 械性質、耐溶劑性（solvent resistance)、耐刮性（scratch • resis_tance)、成本尊優異的薄膜，採用此種延伸聚對苯_ 曱酸乙二酯薄膜之本發明的偏光板，係機械性強度等優Z 之同時，能達成厚度的降低者。 、 在此，聚對苯二曱酸乙二酯，係指重複單元的莫耳 %以上為由對苯二甲酸乙二酯所構成之樹脂之意。作為其他 的共聚合成分者，可例舉：間苯二曱酸、對―沒―羥乙氣烏 ® 安息香酸、4, 4’-二羧基聯苯、4,4’-二羧基二苯曱鲷、雙 (4-羧苯基）乙烷、己二酸、癸二酸、5-續基間苯二甲酸鈉、 1’ 4-二叛基環己烧等的二竣酸成分，例如，丙二醇、丁 _ 醇、新戊二醇、二乙二醇、環己二醇、雙酚A的環氧乙貌 加成物，聚乙二醇、聚丙二醇、聚四甲基二醇等的二元醇 成分。此等二羧酸成分或甘醇成分，需要時可組合2種以 上來使用。又，亦能與上述二羧酸成分或甘醇成分一起， Q 併用對羥基安息香酸等的羥基羧酸。此種其他的共聚成 分，亦可含有少量的醯胺鍵、胺基曱酸酯鍵、醚鍵、含# 碳酸酯鍵等之二羧酸成分及/或二元醇成分。 聚對苯二曱酸乙二醋的製造方法而言，巧*適用：使對 苯二曱酸與乙二醇（以及因應需要時，其他的二羧酸及/或 其他二元醇）直接反應之所謂的直接聚合法、使對本二甲酸^ 的二曱基酯與乙二醇（以及因應需要時，其他的二綾酸的二 甲基酯及/或其他的二元醇）進行酯交換反應之所謂自旨交 換反應等的任意之製造方法。 11 320832 200931083 周二聚對苯二甲酸乙二醋中，因應需要時，亦可含有 二、+加劑。但，由於在光學用途上，需要有透明性之 =加劑的添加量’較佳為限制於最小限度。周知的添 劑者’可例舉：潤滑劑、防結塊劑（antiMocking agent)、熱穩定劑、抗氧劑、抗靜電劑、财光劑⑴邮 Ο200931083. VI. Description of the Invention: [Technical Field] The present invention relates to laminating an adhesive layer on one side of a polarizing film* made of a polyvinyl alcohol resin. A polarizer having a stretched polyethylene terephthalate film and a liquid crystal display device using the polarizing plate. [Prior Art] The iridium polarizing plate is usually provided with one side or both sides of a polarizing film made of a polyethylene glycol-based resin which is subjected to an adsorption orientation by a dichroism dyestuff, and is bonded via a joint. A layer of a protective film (for example, a cellulose acetate-based protective film represented by triethyl fluorenyl cellulose) is laminated on the layer. The polarizing plate having such a laminated structure is required to be bonded to a liquid crystal cell with a binder together with another optical film, and two components of the liquid crystal display device are formed. The liquid crystal display device can be used as a thin display device such as a liquid crystal television, a liquid crystal monitor, or a personal computer, and its use is rapidly expanding. In particular, the market expansion of liquid crystal TVs is extremely significant, and at the same time, the requirements for cost reduction are also strong. In the polarizing plate for a liquid crystal television, a triethyl fluorene-based cellulose film (TAC) is usually laminated on both sides of a polarizing film made of a polyvinyl alcohol-based resin which is adsorbed by a dichroic dye. The film is formed on the outside of one side of the polarizing plate, and a phase difference film is laminated on the adhesive layer by the adhesive. 832320832 3 200931083 破 Τ 破 破 , , , , , , , , For the extension of the resin film, when the nw is added, the phase difference at high temperature is not used. (2) The phase difference film formed by the thin hydrocarbon resin film of the cycloolefin resin film is very small = "n" (four) lifting, product cost For the sake of the reduction, it is possible to reduce the number of the components, or to simplify the manufacturing process, for example, in Japanese Patent Laid-Open Publication No. Hei 8-43812 (Patent Document 1), it is disclosed that there is a phase difference function (phase). Dimensional structure of a film of a smog of a smog, a film of a thin film, a film of a thin film, a film of a thin film, and a TAC film. 181817 Japanese Patent Publication No. 2005-208456 (Patent Document 4) discloses a polarizing film made of a polyvinyl alcohol-based resin and a cycloolefin-based protective film, and a polyamino phthalate is used. The method of joining the water-based adhesives of the urethane system ❹ [Summary of the invention] [The problem to be solved by the invention] In the use of large-screen LCD TVs, the demand for thin-walled wall-mounted televisions has become more and more significant. However, at this time, when it is used as a component for a liquid crystal panel, the following problems occur: (1) The strength of the panel needs to be reinforced in response to the demand for a thin large screen of the liquid crystal panel. 2) Corresponding to the demand for thinning of LCD TVs, the thinning of the structure of 320832 4 200931083 is required. (3) The gap between the liquid day and the back surface of the backlight system is narrowed, The circle caused by the contact of tm; f needs to prevent the unevenness of the chromaticity of the brightness of the liquid crystal panel and the backlight system (Ne_ng), and the g_. Contribute In the process of bonding the polarizing plate to the liquid crystal panel, it is easy to produce the orientation of the liquid crystal in the liquid crystal panel, and the result is that the normal kneading surface cannot be displayed. The present invention is for the purpose of It is possible to respond to 4^ the above-mentioned subject, and the purpose is to increase the thickness of the liquid crystal panel of the M p# t P and to reinforce it. b Use the reinforced 0-port LCD panel and the backlight system to touch the polarizing plate. It is more capable of the left eye, the liquid crystal display device which is excellent in visibility, and the liquid crystal display device which is in the process of the product yield panel and the product yield panel, and the liquid crystal unevenness sentence using the polarizing plate. The color of the time of the inspection [the means for solving the problem] The inventor of the present invention has been working on the station for the purpose of solving such a problem, for example, it is made into a layer of 5 layers of the poly-scale tree Ethylene terephthalate (IV) 1 is obtained by the connection of J, and even if it is thin, it is woven by mechanical strength, and the cost of the silk plate of the visual ❹ is (4) tearing = excellent, as described below. , The present invention, a polarizing plate characterized by having a polarizing film formed of a polyacid and a layer of a layer on the one side of the polarizing film via a bonding agent layer 200931083 Polyethylene terephthalate Ester film. 2. The polarizing plate as described in the above 1 which has an glare-reducing layer which is laminated on the opposite side of the side on which the polarizing film of the polyethylene terephthalate film is laminated. 3. The polarizing plate of the above-mentioned 1 or 2, wherein the blur of the polyethylene terephthalate film (haZe, which is called haze) is in the range of 3 to 40%. The polarizing plate according to the above-mentioned first to third aspect, wherein the polarizing film has a protective film or an optical compensation film laminated on the side opposite to the side on which the polyethylene terephthalate film is stretched. (State (3) i _pensati〇n film) 〇 film cellulose 2:: a polarizing plate, wherein the optical compensation 6. As described above 1 to 4, film system 7 norbornene-based polarizing plate, Among them, the optical compensator. The polarizing plate described in "6" contains an antistatic agent. 8. If the above 1 to 7 are laminated, there is an extended poly(p-phenylene):: the light plate, in which the surface of the polarizing film is further adhesive. The present invention is a night crystal display device of the present invention which provides the above-mentioned rubber coating layer, which is provided with a liquid crystal panel having a liquid crystal panel, a polarizing plate, and a spacer. The adhesive layer is bonded to [the fruit of the invention] 320832 6 200931083 The polarizing plate of the present invention is excellent in mechanical strength, particularly tearing property, and can achieve mechanical strength improvement of the liquid crystal panel to be applied, Further, it is possible to prevent contact between the liquid crystal panel using the polarizing plate and the backlight system. Further, the liquid crystal display device of the present invention using the polarizing plate of the present invention can be suitably used for a large-screen LCD TV. A liquid crystal display device, in particular, a liquid crystal display device for a liquid crystal television which can be hung on a wall. [Best Embodiment of the Invention] A polarizing film which can be used in the polarizing plate of the present invention, specifically, has been unidirectionally extended in the crucible ( Uniaxial Stretched) A polyvinyl alcohol resin film adsorbs a directional dichroic dye. The polyvinyl alcohol resin is obtained by saponification of polyester acetal resin (PVAC). A copolymer of ethyl vinegar acetate alone (other than polyvinyl acetate of homo p〇1), a copolymer of vinyl acetate and other monomers copolymerizable therewith, may be exemplified by ethylene-vinyl acetate. Copolymers, etc. Other monomers capable of copolymerizing with vinyl acetate may, for example, be unsaturated and carboxylate, olefin, vinyl ether, unsaturated sulfonic acid, acrylamide having ammonium group The degree of saponification of the polyvinyl alcohol resin (criminal 1) 011 丨 ^ (^ 1:1 〇 11 (1 ping 1: washing), usually 85 to 100 mol % ' is preferably 98 mol% or more. These polyvinyl alcohol resins may also be those which have been modified, for example, by using a polyethyl ethoxylate, a polyacetonitrile, a polybutyric acid, or the like which has been modified with a genus. Further, the degree of polymerization of the polyvinyl alcohol-based resin is usually in the range of from 〇 to 〇, preferably in the range of from 15 Å to 5 Å. The film made of such a polyvinyl alcohol resin can be used as a primary film of the polarizing film 320832 200931083. The polyethylene glycol resin can be formed by a suitable method which is known in the art. The film thickness of the film, and the helmet is specially made of u, sterol resin. For example, it is a tin-to-150-core polarizing film, usually by: dyeing the resin film and t color = row of polyvinyl alcohol =:=The poly-system 吸附== (the acid-acid treatment process) which adsorbs the dichroic pigment, and the process of washing the _acid to the water (washing process). At the time of the film, usually, the film of the polyethylene glycol resin is extended early, but the one-way extension can be carried out before the dyeing process, or during the dyeing process, or after the dyeing process. If one-way extension is carried out after the dyeing process, the one-way extension can be carried out before the boric acid treatment process or in the boric acid treatment process. Of course, one-way extension can also be implemented in these multiple stages. The one-way extension can be made into a one-way extension between rolls having different circumferential speeds ("〇11"), and a hot roll can be used to extend the direction in one direction. Further, it may be a dry stretching in which an extension is carried out in the atmosphere, or may be a mixed stretching in which a solvent is used to expand it in a state of being expanded. The extension rate is usually 3 to 8 times. The dyeing of the polyvinyl alcohol resin film using the dichroic dye in the dyeing process is carried out, for example, by impregnating a polyvinyl alcohol resin film with an aqueous solution containing a dichroic dye. As a dichroic dye, for example, 讦 8 320832 200931083 iodine, a dichroic dye, or the like is used. A dichroic dye may include a dichroic direct dye such as CI DIRECT RED 39 (Dye Index Direct Red No. 39) and a bisazo compound, and a compound such as trisazo or tetrazo A dichromatic direct dye. Here, the polyvinyl alcohol resin film is preferably subjected to an impregnation treatment in water before the dyeing treatment. When iodine is used as the dichroic dye, it is usually a method of impregnating a polyvinyl alcohol resin film in an aqueous solution containing iodine and potassium iodide for dyeing. The iodine content in the aqueous solution is usually from 0.01 to 1 part by weight per 100 parts by weight of water, and the potassium iodide content is usually from 0.5 to 20 parts by weight per 100 parts by weight of water. When a moth is used as the dichroic dye, the temperature of the aqueous solution used for dyeing is usually 20 to 40 ° C, and the impregnation time (dyeing time) in the aqueous solution is usually 20 to 1800 seconds. On the other hand, when a dichroic dye is used as the dichroic dye, it is usually used in an aqueous solution containing an aqueous dichroic dye to impregnate the polyvinyl alcohol resin film to perform dyeing. The content of the dichroic dye in the aqueous solution is usually 1χ1 (Γ4 to 10 parts by weight, preferably 1χ10_3 to 1 part by weight, particularly preferably 1χ1 (Γ3 to lxio-2 weight) per 100 parts by weight of water. In the aqueous solution, an inorganic salt such as sodium sulphate may be contained as a dyeing assistant. When a dichroic dye is used as the dichroic dye, the temperature of the dye aqueous solution used for dyeing is usually 20 to 80°. C, in addition, the impregnation time (dyeing time) in the aqueous solution is usually 10 to 1800 seconds. 0 Boric acid treatment process, the polyvinyl alcohol resin film dyed by the dichroic dye is impregnated with boric acid. In an aqueous solution, the amount of acid in the amount of 9 320832 200931083 mm of boric acid is 5 to 12 parts by weight per 15 parts by weight of water, and 5 to 12 parts by weight. For the pigment, use a dish (four) to treat the mixed aqueous solution, preferably the amount of potassium in water per aqueous solution, to η by weight, in an aqueous solution containing 15 parts by weight, preferably 5 to each boric acid. When immersed, Ο ^, 15 〇, 6 〇〇 ^ Γ "the water of citrate The temperature of the solution is usually above the gripping amount, preferably: 50 to 85 C' is more preferably 6 to 8 Torr. Preferably, the polyethylene is subjected to the above-mentioned Wei-treated film, for example, by dipping in In water, wash with water. The temperature of the water in the water is usually 5 to 4 〇 < t, the immersion time, g 2 to 2 〇 2 seconds. After washing, usually dry treatment, ^ light Membrane. Drying treatment, for example, suitable cooling is carried out by using a hot air dryer, a t-wire heater, etc. The drying treatment temperature is usually 30 to _ sec, compared with Γ. The drying treatment time is usually 60 pm. It is preferably 120 to 600 seconds. In this way, the unidirectional extension of the polyvinyl alcohol resin film is carried out according to the two colors! • Pigment dyeing, boric acid treatment and water washing treatment to obtain a polarizing film. The thickness of the polarizing film Usually, it is in the range of 5 to 40/zm. The polarizing plate of the present invention has an extension such as a biaxially-oriented polyethylene terephthalate film laminated on one side of such a polarizing film via an adhesive layer. Structure of polyethylene terephthalate film. 10 320832 200931083 Can be used in this The extended polyethylene terephthalate film is a film which is mechanical, solvent resistance, scratch • resis_tance, and cost-effective, and is used to extend the poly(p-phenylene phthalate). The polarizing plate of the present invention having an ethylene diester film is excellent in mechanical strength and the like, and can achieve a reduction in thickness. Here, polyethylene terephthalate refers to the molar % of the repeating unit. The above is the meaning of the resin composed of ethylene terephthalate. As other copolymerization components, it may be exemplified by isophthalic acid, p-non-hydroxyethane, benzoic acid, 4, 4 '-Dicarboxybiphenyl, 4,4'-dicarboxydiphenyl hydrazine, bis(4-carboxyphenyl)ethane, adipic acid, sebacic acid, sodium 5-hydroxyisophthalate, 1' 4 - a diterpene acid component such as propylene glycol, butanol, neopentyl glycol, diethylene glycol, cyclohexanediol, bisphenol A, and the like. A glycol component such as ethylene glycol, polypropylene glycol or polytetramethyl glycol. These dicarboxylic acid components or glycol components can be used in combination of two or more kinds as needed. Further, together with the above dicarboxylic acid component or glycol component, Q may be used in combination with a hydroxycarboxylic acid such as p-hydroxybenzoic acid. Such other copolymerization component may contain a small amount of a guanamine bond, an amino phthalate bond, an ether bond, a dicarboxylic acid component containing a #carbonate bond, and/or a diol component. For the production of polyethylene terephthalate, it is suitable for direct reaction of terephthalic acid with ethylene glycol (and other dicarboxylic acids and/or other glycols if necessary). The so-called direct polymerization method for transesterification of a dimercapto ester of the present dicarboxylic acid with ethylene glycol (and other dimethyl esters of dinonanoic acid and/or other glycols if necessary) Any method of manufacturing such as an exchange reaction. 11 320832 200931083 On Tuesday, polyethylene terephthalate, if necessary, may also contain two, + additives. However, since it is necessary to have transparency in optical use, the addition amount of the additive is preferably limited to a minimum. A well-known additive can be exemplified by a lubricant, an anti-mocking agent, a heat stabilizer, an antioxidant, an antistatic agent, and a light agent (1).

Q \eSlstanCeagent)、耐衝擊性改質劑等。耐光劑，亦包含 紫外線吸收劑，例如，作為紫外線吸收劑的例者，可列舉·· 2’ 2 ~亞甲基雙[4一（1，/，3, 3-四甲基丁基）-6-(2H-苯并三 2-基)酚]、2-(5-甲基-2-羥苯基)替苯并三唑、2_[2: 羥基-3,5-雙（α，二甲基节基)苯基]|苯并三口坐、2一 (3’5-二-第三丁基_2一羥苯基）-211_苯并三唑、2_(3_第三丁 基-5-甲基-2-經苯基氯代|苯并三唾、2_(3 5一二— 第三丁基_2_羥苯基）-5_氯代-2Η-苯并三唑、2-(3,5-二-第二戊基-2-羥苯基）-2H-苯并三唑、2-(2’-羥基-5，-第三 辛基苯基）-2H-苯并三啥般的苯并三唑系紫外線吸收劑；2一 羥基-4-甲氧基二苯曱酮、2_羥基_4_辛氧二苯甲酮、2, 4一 二羥基二苯曱酮、2-羥基—4-甲氧基-4，-氯代二苯甲酮、 2, 2’ -二羥基-4-曱氧基二苯甲酮、2, 2’ _二羥基_4, 4, _二甲 氧基二苯甲酮般的2-羥基二苯曱酮系紫外線吸收劑；對第 二丁基苯基水揚酸酯、對辛基苯基水揚酸酯般的水揚酸苯 酯系紫外線吸收劑等，因應需要時，亦可使用此等的2種 以上。如含有紫外線吸收劑時，其量，通常為〇. i重量％ 以上’較佳為〇. 3重量％以上’或較佳為2重量％以下。 可用於本發明之延伸聚對苯二曱酸乙二酯薄膜，如將 12 320832 200931083 上述之原料樹脂成形為薄膜狀，並實施延伸處理即可製 • 經延伸之聚對苯二甲酸乙二酯薄膜之製作方法可為任 ，意，並無制加以限定，惟可例舉：將上述原料樹赌炫二 並擠出成型片狀之無定向薄膜，於聚對苯二曱酸乙二酽、 玻璃移轉溫度以上的溫度中按機械性加以延伸後， 固+定（thermal fixati〇n)處理之方法。在此，施加於聚& 苯二甲酸乙二醋之延伸處理可為單向延伸、雙向延伸中之 任一種。 ❹ 又，本發明中之延伸聚對苯二曱酸乙二酯薄臈的狂仙 倍率，關於薄膜的長度方向、寬幅方向各個較佳為1 1至 6倍，更佳為3至5· 5倍。如延伸倍率在1. 1倍以下 則延伸聚對苯二甲酸乙二醋薄膜可能不會顯示足夠的 性。 再者，仗降低延伸聚對苯二甲酸乙二醇西旨薄膜中之定 向主軸（orientation principal shaft)的歪斜 O (dlstortlon)(對延伸轴之錯位）的觀點來看，較佳為在上 述之延伸後而進行熱固定處理前，實施往薄膜之長度方向 (薄膜的移動方向）、薄膜之寬幅方向（對薄膜的移動方向成 為垂直的方向）之鬆弛處理（relaxati〇n treatment)。進行 鬆弛處理之溫度為90至20(rc，較佳為12〇至18〇t：。鬆 弛1雖隨橫延伸條件不同而有異，惟較佳為按鬆弛處理後 的延伸聚對苯二曱酸乙二酯薄膜在15(rc下之熱收縮率 (thermal shrinkage rate)能成為2%以下之方式設定鬆弛 置及溫度。 13 320832 200931083 泛2^1理的溫度’通常為180至25G°C，較佳為200 後，為了1、、^處理，首先在定長之下進行熱固定處理 … 氏定向主軸的歪斜，並提升耐熱性等強度，較 佳:’、再實％薄膜長度方向（薄膜移動方向）或者薄膜寬幅方 1的^^處理°此時的鬆他量’較·佳為鬆弛處理後的延伸 Γ f 二酯㈣在15 G °c下之熱收料以能成為 /之方式調整，更佳調整為2至5%。Q \eSlstanCeagent), impact modifiers, etc. The light-resistant agent also contains an ultraviolet absorber. For example, as an example of the ultraviolet absorber, 2' 2 -methylenebis[4 -(1,/,3, 3-tetramethylbutyl)- 6-(2H-benzotris-2-yl)phenol], 2-(5-methyl-2-hydroxyphenyl)benzobenzotriazole, 2_[2:hydroxy-3,5-bis(α,二Methyl)phenyl]|benzotrienyl, 2(3'5-di-t-butyl-2-hydroxyphenyl)-211_benzotriazole, 2_(3_t-butyl 5-5-methyl-2-phenylphosphino|benzotrisole, 2-(3 51-2-t-butyl-2-hydroxyphenyl)-5-chloro-2-indole-benzotriazole, 2-(3,5-di-secondylpentyl-2-hydroxyphenyl)-2H-benzotriazole, 2-(2'-hydroxy-5,-third octylphenyl)-2H-benzene And triterpenoid benzotriazole-based UV absorber; 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-inoxodibenzophenone, 2,4-dihydroxydiphenylhydrazine Ketone, 2-hydroxy-4-methoxy-4,-chlorobenzophenone, 2, 2'-dihydroxy-4-decyloxybenzophenone, 2, 2'-dihydroxy- 4, 4, 2-dimethoxybenzophenone-like 2-hydroxybenzophenone-based ultraviolet absorber; for p-butylphenyl salicylate, p-octyl Phenyl salicylate-like phenyl salicylate-based ultraviolet absorber, etc., if necessary, two or more of these may be used. When the ultraviolet absorber is contained, the amount is usually 〇. The above 'preferably 〇. 3% by weight or more' or preferably 2% by weight or less. The extended polyethylene terephthalate film which can be used in the present invention, such as the raw material resin of 12 320832 200931083 formed into a film And can be processed by extension treatment. The method for producing the stretched polyethylene terephthalate film can be any, meaning, and not limited, but it can be exemplified by: Extrusion-formed sheet-like non-oriented film, which is mechanically extended at a temperature above the glass transition temperature of polyethylene terephthalate and at a temperature above the glass transition temperature, and is subjected to a thermal fix treatment. Therefore, the extension treatment applied to the poly<"&&&&&&&&&&&&&&&&&&&&&&&&& Fair rate, about the length direction and width of the film The direction is preferably from 1 to 6 times, more preferably from 3 to 6.5 times. If the stretching ratio is less than 1.1 times, the extended polyethylene terephthalate film may not exhibit sufficient properties. From the standpoint of reducing the skew O (dlstortlon) of the orientation principal axis in the extended polyethylene terephthalate film (displacement to the extension axis), it is preferred to extend the above Thereafter, before the heat setting treatment, a relaxation treatment (relaxati〇n treatment) in the longitudinal direction of the film (the moving direction of the film) and the wide direction of the film (the direction in which the moving direction of the film is perpendicular) is performed. The relaxation treatment is carried out at a temperature of 90 to 20 (rc, preferably 12 to 18 〇t: although the relaxation 1 varies depending on the lateral extension conditions, it is preferably an extended polyparaphenylene after relaxation treatment. The ethylene glycol ester film is set to have a relaxation temperature and a temperature of 15% or less at a thermal shrinkage rate of 15%. 13 320832 200931083 The temperature of the ubiquitination is usually 180 to 25 G ° C. Preferably, after 200, for the treatment of 1, and ^, first heat-fixing treatment under the fixed length... The skew of the oriented spindle is increased, and the strength such as heat resistance is improved, preferably: ', re-reality film length direction ( Film movement direction) or film width width 1 ^ ^ treatment ° at this time the amount of loose 'better than the relaxation treatment after stretching Γ f diester (four) at 15 G °c heat receipt can become / The way to adjust, better adjusted to 2 to 5%.

中疋向主軸的歪斜的最大值（對延伸軸之錯位 角度)在30度以下，較佳為1〇度以下，更佳為5度以下的 雙㈣伸聚對苯二甲酸乙二_膜很適合㈣。如將經採 用定向主軸的歪斜的最大值在30度以上之延伸聚對苯二 甲f乙^旨薄膜之偏光膜，貼合於液晶顯示裝置的液晶顯 7F旦^時’可能著色不良會有增大傾向。又，延伸聚對苯 二甲酸乙二§旨_的定向絲的歪斜的最大值的下限值並 無特：加以限制’惟較佳為〇度以上。再者，上述之延伸 聚對苯二甲酸乙二醋薄膜的定向主軸的歪斜的最大值，例 如採用純錢麟查裝置丨職线（大㈣子（股） 製）、微波穿透型分子定向計⑽A)(王子制機以股） 製）’則可測定。 可用於本發明之延伸聚對苯二曱酸乙二酯薄膜的厚度 dm·，較佳為在20至60# m的範圍内，更佳為 〇 ，的範圍内。如延伸聚對苯二曱酸乙二㈣膜的厚度dm 在20#m以下時，則可能有難於處理（操作處理性不佳）之 傾向’而厚度dm在60/zm以上時，則可能薄壁化之好處 320832 14 200931083 難於顯現。 又’可用於本發明之延伸聚對苯二曱酸乙二酯薄膜的 面内相位差值（in plane phase shift value)RpET較佳為在 lOOOnm以上，更佳為3〇〇〇而以上。如延伸聚對苯二曱酸 乙一知薄膜的面内相位差值Rpet為100Onm以下，則可能從 正面的變色會顯著。又，可用於本發明之聚對苯二甲酸乙 二酯薄膜的面内相位差值rpet的上限，至l〇〇〇〇nm程度即 足夠。 ❹ 在此’延伸聚對苯二甲酸乙二酯薄膜的面内相位差值The maximum value of the skew of the middle turn to the main axis (the misalignment angle to the extended axis) is 30 degrees or less, preferably 1 degree or less, more preferably 5 degrees or less, and the double (four) stretched polyethylene terephthalate film is very Suitable for (four). For example, if the maximum value of the skew of the oriented spindle is 30 degrees or more, the polarizing film of the poly(p-xylylene) film is bonded to the liquid crystal display device, and the liquid crystal may be poorly colored. Increase the tendency. Further, the lower limit of the maximum value of the skew of the oriented yarn extending the polyethylene terephthalate is not limited: it is preferably more than the twist. Furthermore, the maximum value of the skew of the oriented major axis of the above-mentioned extended polyethylene terephthalate film is, for example, a pure Qianlin device (a large (four) sub-unit), microwave-transmissive molecular orientation. It can be measured by (10) A) (the prince machine is made by shares). The thickness dm· of the extended polyethylene terephthalate film which can be used in the present invention is preferably in the range of 20 to 60 # m, more preferably in the range of 〇. For example, when the thickness dm of the extended polyethylene terephthalate film is less than 20#m, there may be a tendency to be difficult to handle (poor handling property), and when the thickness dm is 60/zm or more, it may be thin. The benefits of walling 320832 14 200931083 Difficult to appear. Further, the in-plane phase shift value RpET of the extended polyethylene terephthalate film which can be used in the present invention is preferably at least 100 nm, more preferably at most 3 Å. If the in-plane phase difference Rpet of the extended poly-terephthalic acid-based film is 100 nm or less, the discoloration from the front surface may be remarkable. Further, the upper limit of the in-plane retardation value rpet of the polyethylene terephthalate film which can be used in the present invention is sufficient to the extent of 10 nm.面In-plane retardation of the extended polyethylene terephthalate film

Rpet，可以下述式（1)表示。Rpet can be represented by the following formula (1).

RpET=(na-nb)xdpET (i) (上述式（1)中，na為延伸聚對苯二曱酸乙二酯薄膜的面内 相位遲後軸（遲相軸；in plane phase iag axis)方向的折 射率’ nb為面内相位超前軸（進相轴；inplane phase iead axis)方向（與面内遲相軸方向垂直相交之方向）的折射 ❹率，dm為雙向延伸聚對苯二甲酸乙二酯薄膜的厚度。） 又，可用於本發明之雙向延伸聚對苯二甲酸乙二醋薄 膜之 MOR(maximum oriented ratio)值，較佳為丨· 5 以上， 更佳為2. 0以上’特佳為2. 2以上。如採用值為]5 以下之雙向延伸聚對苯二曱酸乙二s旨薄膜之偏絲適用於 液晶顯示裝置時，則可能斜向干擾不勻（interf erence unstatic)會有增大之傾向。再者，雙向延伸聚對苯二甲酸 乙二酯薄膜的M0R值的上限值並無特別加以限制，7以下 即足夠。寿此，M0R值，係指由穿透型分子定向計所測定 320832 15 200931083 之穿透微波強度（penetrating micro wave strength)的最 . 大值與最小值之比（最大值/最小值）之意，而可成為向異 性（anisotropic)之指標（index)。M0R值，如採用微波穿 透型分子定向計（王子製紙（股）製），則可測定。 可用於本發明之製造方法之聚對苯二甲酸乙二酯樹脂 薄膜上，可賦與有易接合層，而其賦與有易接合層之聚對 苯二甲酸乙二酯樹脂薄膜的形成方法，雖並無特別加以限 定，但可採用：於所有延伸過程全部終了後之薄膜上开#成 © 之方法’在進行聚對苯二曱酸乙二酯樹脂之延伸過程中， 亦即，在進行縱向延伸與橫向延伸過程之間形成之方法， 以及在與偏光膜進行接合之前或經接合後形成之方法等。 其中’從生產性的觀點來看，在經縱向延伸聚對苯二甲酸 乙二酯樹脂後形成，接著進行橫向延伸之方法較適合採用。 易接合層’可賦與在聚對苯二甲酸乙二酯樹脂之雙 面’或者’隔著接合劑而與由聚乙烯醇系樹脂所成偏光膜 ❹ 接合之單面。 構成易接合層之成分，並無特別加以限定，但可例舉： 於骨架上具有極性基（polar group)而較為低分子量且係 低玻璃移轉溫度之聚S旨樹脂、胺基甲酸g旨樹脂、或者丙稀 酸酯樹脂等。又’對應需要時，可含有交聯劑、有機或者 無機填充劑、界面活性劑，以及潤滑劑等。 又，在可用於本發明之延伸聚對笨二甲酸乙二酯薄膜 上，亦可賦與有防閃光性（模糊度）。作為賦與防閃光性之 方法，並無特別加以限制，但可例舉：於上述原料樹脂中 16 320832 200931083 混合無機微粒子或有機微粒子後加以薄膜化之方法，於積 層有延伸聚對苯二曱酸乙二酯薄膜的偏光膜之侧的相反面 上，塗佈經將無機微粒子或有機微粒子混合於樹脂接合劑 之塗佈液以形成防閃光層之方法等。其中，從降低源自聚 對苯二甲酸乙二酯薄膜的色度不均勻（干擾不勻）的觀點而 吕，較佳為作成於積層有延伸聚對苯二甲酸乙二酯薄臈的 偏光膜之側的相反面上，再具有經積層之防閃光層之結構 以實現本發明之偏光板。 作為為了賦與防閃光性的無機微粒子者，作為代表者 可使用·—氧化石夕、膠態二氡化石夕、氧化紹、氧化紹溶膠、 銘石夕酸鹽、氧德-氧切複合氧化物、高嶺土、滑石、雲 母、碳酸舞、磷酸斜。又，有機微粒子者，可使用：交 :聚：烯酸粒子、甲基丙稀酸甲酿，苯乙稀共聚物樹脂粒 备父聯聚苯乙_子、交聯聚甲基丙烯酸曱練子、聚 矽氧樹脂粒子、聚醯亞胺粒子等樹脂粒子。' ❹ 八4可作賴由於制有延伸料苯二f酸乙二 偏光膜之侧的相反側，介由接合劑層或者膠黏劑 =由三乙醯基纖維素⑽)等纖維素樹脂薄膜、稀烴樹 烯酸醋樹脂薄膜、聚自旨樹脂_所成之_光 伴方法，而賦與防閃光性之方式。該防閃光 係藉由於基材薄膜表面塗佈塗佈液之方法，於 =樹合有機微粒子或無材微粒子並成型樹 j薄膜之方法等而製作者很適合使用。 光性保護膜時，其厚聽料在5幻 320832 17 200931083 佳為在20至80以m的範圍内。又，此種防閃光性保， 模糊度值，較佳為在3至40%的範圍内。如防閃光性=的 膜的模糊度值為3%以下時，則防閃光效果可能會有受^幾 慮，又，如防閃光性保護膜的模糊度值為4〇%以上時焉之 晝面會發白而可能有會降低目視性之慮。 則 又，亦可以於積層延伸聚對笨二甲酸乙二酯薄膦的 光膜之侧的相反面上，施加有硬質覆膜處理（hard 、僞 Ο coating)、抗靜電處理等的表面處理。又，亦可形成有 液晶性化合物或由其高分子量化合物等所成之塗佈層由 (coated layer)。在此，如不用雙向延伸聚苯二甲酸乙 酯，而採用延伸聚萘二甲酸乙二醇薄膜時，仍可得 〜 樣之效果。 —又，本發明之偏光板，亦可於偏光臈之積層有延伸聚 對苯二甲酸乙二酯薄膜之侧的相反侧，積層有保護膜或者 光學補償膜。作為保護膜或者光學補償膜者，可例舉：= 〇乙=基纖維素薄膜（TAC薄膜）等的纖維素樹脂薄膜、烯= 樹脂薄膜、丙稀酸醋樹脂薄膜、㈣樹脂薄膜等的透明^ 膜。又，亦可在此種透明膜上，積層後述之光學功能 膜。 /纖維素樹脂薄膜，係一種纖維素的部分或完全醋化物 的薄膜，可例舉：纖維素的醋酸酯、丙酸酯、酪酸酯、由 此等之混合酯等所成之薄膜 。更具體而言，可例舉：三乙 酿基纖維素薄膜、二乙醯基纖維素薄膜、纖維素乙酸醋丙 酉文酉曰薄臈、纖維素乙酸酯丁酸酯薄膜等。 320832 18 200931083 作為此種纖維素酉旨薄 β 如富士達克TD80(富士膠蛊“、了例舉適當的市售品，例RpET=(na-nb)xdpET (i) (In the above formula (1), na is an in-plane phase retardation axis of the extended polyethylene terephthalate film (in phase phase iag axis) The refractive index 'nb of the direction is the refractive index of the in-plane phase inad axis (inplane phase iead axis) direction (the direction perpendicular to the in-plane phase axis direction), dm is bidirectionally extended polyterephthalic acid The MOR (maximum oriented ratio) value of the biaxially-oriented polyethylene terephthalate film of the present invention is preferably 丨·5 or more, more preferably 2.0 or more. 'Specially better than 2. 2 or more. If a biased wire of a biaxially oriented polyethylene terephthalate film having a value of 5 or less is used for a liquid crystal display device, the unevenness of the oblique interference may increase. Further, the upper limit of the M0R value of the biaxially-extending polyethylene terephthalate film is not particularly limited, and 7 or less is sufficient. In this case, the M0R value refers to the ratio of the maximum value to the minimum value (maximum value/minimum value) of the penetrating micro wave strength measured by the penetrating molecular directionality meter 320832 15 200931083. It can be an index of anisotropic. The M0R value can be measured by using a microwave penetrating molecular aligner (manufactured by Oji Paper Co., Ltd.). A polyethylene terephthalate resin film which can be used in the production method of the present invention can be provided with an easy-bonding layer, and a method of forming a polyethylene terephthalate resin film having an easy-bonding layer Although it is not particularly limited, it can be used in the process of extending the polyethylene terephthalate resin in the process of extending the film after all the extension processes are completed, that is, in the process of A method of forming between the longitudinal stretching and the lateral stretching process, and a method of forming the film before or after bonding with the polarizing film. Among them, from the viewpoint of productivity, a method of forming a polyethylene terephthalate resin in the longitudinal direction and then performing lateral stretching is preferred. The easy-bonding layer ' can be bonded to one side of the polyethylene terephthalate resin or a single side joined to the polarizing film 由 formed of a polyvinyl alcohol-based resin via a bonding agent. The component constituting the easy-bonding layer is not particularly limited, and may be a resin having a polar group and a low molecular weight and having a low glass transition temperature, and a urethane. Resin, or acrylate resin, etc. Further, when necessary, a crosslinking agent, an organic or inorganic filler, a surfactant, a lubricant, or the like may be contained. Further, in the extended polyethylene terephthalate film which can be used in the present invention, it is also possible to impart anti-glare property (fuzziness). The method for imparting the anti-glare property is not particularly limited, and may be exemplified by a method of thinning the inorganic fine particles or the organic fine particles by mixing the inorganic fine particles or the organic fine particles in the raw material resin, and having an extended polyparaphenylene fluorene in the laminated layer. On the opposite side of the side of the polarizing film of the ethylene glycol film, a method of mixing an inorganic fine particle or an organic fine particle in a coating liquid of a resin bonding agent to form an antiglare layer, or the like is applied. Among them, from the viewpoint of reducing the chromaticity unevenness (disturbance unevenness) derived from the polyethylene terephthalate film, it is preferable to form a polarized light having a laminated polyethylene terephthalate thin layer. On the opposite side of the side of the film, there is a structure of a laminated anti-glare layer to realize the polarizing plate of the present invention. As a representative of the inorganic fine particles for imparting anti-glare properties, it can be used as a representative - oxidized stone, colloidal bismuth fossil, oxidized sulphate, oxidized sol, sulphate, oxygen-oxygen-cut composite oxidation Matter, kaolin, talc, mica, carbonic acid dance, phosphoric acid oblique. In addition, organic microparticles can be used: cross: poly: olefinic acid particles, methyl acrylate acid brewing, styrene copolymer resin pellets, parent polyphenylene phenylene, cross-linked polymethacrylic acid hydrazine Resin particles such as polyoxynene resin particles and polyamidene particles. ' ❹ 八 4 can be used as the opposite side of the side of the benzene difluoride film which is made of the extended material, and the cellulose resin film such as the adhesive layer or the adhesive = triethyl fluorenyl cellulose (10) A method of imparting anti-glare properties to a thin hydrocarbon oleic acid resin film, a polyether resin, and a photo-assisted method. The anti-glare is suitably produced by a method of coating a surface of a base film with a coating liquid, a method of forming an organic thin particle or an uncoated fine particle, and molding a tree j film. When the photoprotective film is used, its thick hearing material is preferably in the range of 20 to 80 m in 5 magic 320832 17 200931083. Further, such an anti-glare property, the ambiguity value is preferably in the range of 3 to 40%. If the ambiguity value of the film with anti-glare = is 3% or less, the anti-glare effect may be affected, and if the ambiguity value of the anti-glare protective film is 4% or more, The surface will be whitish and may have reduced visual considerations. Further, a surface treatment such as hard coating, hard coating, or antistatic treatment may be applied to the opposite side of the side of the light film which is extended to the polyethylene bisphosphonate. Further, a liquid crystal compound or a coating layer made of a high molecular weight compound or the like may be formed. Here, if the polyethylene naphthalate film is stretched without biaxially extending polyethylene terephthalate, the effect can be obtained. Further, the polarizing plate of the present invention may be laminated with a protective film or an optical compensation film on the opposite side of the side of the polarizing enamel having the polyethylene terephthalate film extending. The protective film or the optical compensation film may, for example, be a cellulose resin film such as a cellulose film (TAC film), an alkene resin film, an acrylic acid resin film, or a (4) resin film. ^ Membrane. Further, an optical functional film to be described later may be laminated on such a transparent film. The cellulose resin film is a film of a partially or completely hydrated cellulose, and examples thereof include cellulose acetate, propionate, tyrosate, and a mixed ester of the like. More specifically, a triethyl cellulose-based cellulose film, a diethyl hydrazine-based cellulose film, a cellulose acetate vinegar, a cellulose acetate butyrate film, or the like can be exemplified. 320832 18 200931083 As an example of such a cellulose-based thin film, such as Fujidak TD80 (Fuji Rubber Co., Ltd.), an appropriate commercial product is exemplified.

士膠卷（股）製）、舍士、)製）、富士達克聰UF(富 2M(哥尼加+克TD8〇UZ(富士膠卷（股）製）、KC8UX 他先學(物)、瞧(哥尼加米漢他光學 夹.㈣音=脂薄膜所成之光學補償膜而言，可例 i : = 中含有具有相位差調整功能之化合物之薄 0 ml: 塗佈具有相位差調整功能之化合物之薄 L將纖維素_加以單岐伸或雙向延伸所得之薄膜 又，於本發明之偏光板中，賦與有相位差特性之醋酸 纖維素樹脂薄膜亦报適合使用，作為賦與有此種相位差特 性之醋酸纖維素系樹脂薄膜的市售品者，可例舉：肝泣438 (富士膠卷⑻製）、WVA(富士膠卷（股）製）、kc4fim(哥 尼加米濃他光學（股）製）、腿W(哥尼加米濃他光學（股） 製）等。 又’亦可將環埽煙樹脂薄膜加以單向延伸或雙轴延伸 而作成光學補償膜。環燁烴樹脂薄膜’係指例如具有由降 冰片烯、多環降冰片稀單體等的環狀烯烴（環烯烴）所成單 體的單元之由，塑性的樹脂所成之薄膜之意。環烯烴薄 膜，可為使用單一的環烯烴之開環聚合物或使用2種以上 的環婦煙之開環共聚物的加氬物、亦可為環稀烴與 狀烯烴及/或乙歸基之芳香族化合物等的加成共聚物。 又，於主鏈或側鏈導入有極性基者，亦有效。 如採用環烯烴與具有鏈狀烯烴及/或乙烯基之芳香族 320832 19 200931083 化合物的共聚物時，作為鏈狀稀煙者，可例舉：苯乙稀、 α-甲基苯乙烯、核烷基取代苯乙烯等。於此種共聚物中， 由環烯烴所成單體的單元，可為50莫耳％以下（較佳為15 至50莫耳％)。特別是，作成環烯烴與鏈狀烯烴與具有乙烯 基之芳香族化合物的三元共聚物時，則由環烯烴所成單體 的單元，係可作成如上述之較少的量。於此種三元共聚物 中，由鏈狀烯烴所成單體的單元，通常為5至8〇莫耳％、 由具有乙烯基之芳香族化合物所成單體的單元，通常為5 ❾至80莫耳％。 環烯烴樹脂’可採用適當的市售品，例如Topas (托Shijiao (share) system, Shoushi,)), Fujidak Cong UF (Fu 2M (Gonaga + TD8 〇 UZ (Fuji film (share) system), KC8UX He first learn (object), 瞧(Gonika Mihanta optical clip. (4) Sound = optical compensation film made of grease film, for example, i : = thin compound containing phase difference adjustment function 0 ml: coating with phase difference adjustment function The thin film of the compound L is a film obtained by stretching or biaxially extending the cellulose. Further, in the polarizing plate of the present invention, a cellulose acetate resin film having phase difference characteristics is also reported to be suitable for use. The commercially available product of the cellulose acetate-based resin film having such a phase difference property may, for example, be a liver 438 (made by Fuji Film Co., Ltd.), WVA (made by Fujifilm Co., Ltd.), or kc4fim (Konica Minolta). Optical (unit) system, leg W (Gonika rice concentrating optical system), etc. Also, the ring smoky resin film can be uniaxially stretched or biaxially stretched to form an optical compensation film. The hydrocarbon resin film 'is, for example, a cyclic olefin having a norbornene, a polycyclic norbornene-diluted monomer, or the like ( The cycloolefin is a unit of a monomer, and a film made of a plastic resin. The cycloolefin film may be a ring-opening polymer using a single cyclic olefin or an open ring using two or more kinds of ring-type smog. The argon-added product of the copolymer may be an addition copolymer of a cycloaliphatic hydrocarbon, an olefin, or an aromatic compound such as an ethyl group. Further, it is also effective to introduce a polar group into the main chain or the side chain. When a copolymer of a cyclic olefin and a compound having a chain olefin and/or a vinyl group 320832 19 200931083 is used, as the chain smoker, styrene, α-methyl styrene, and nucleus may be mentioned. a substituted styrene or the like. In such a copolymer, the unit derived from a cycloolefin may be 50 mol% or less (preferably 15 to 50 mol%). In particular, a cycloolefin and a chain are formed. When the olefin is a terpolymer of a vinyl compound having a vinyl group, the unit derived from the cyclic olefin may be formed in a smaller amount as described above. In the terpolymer, the chain is a unit of monomeric olefins, usually 5 to 8 mole %, having ethylene The unit of the monomer derived from the aromatic compound is usually from 5 Å to 80 mol%. The cyclic olefin resin ' can be suitably marketed, for example, Topas

巴斯）（Ticona 社製）、ARTON(亞頓）（JSR(股）製）、ZEONOR (哲諾亞）（曰本Zeon(股）製）、APEL(亞培爾）（三井化學（股） 製）等。如將此種環烯烴樹脂加以製膜而作成薄膜時，則可 適當採用溶劑澆鱗（solvent casting)法、熔融擠出法等周 知的方法。又’亦可例如將埃淅西拿（積水化學工業（股） Ο 製）、SCA40(積水化學工業（股）製）、ZE0N0R薄膜（歐布德 斯（股）製）、ART0N薄膜（jSR(股）製）等預先製膜之環烯烴 树脂製薄膜的市售品作為透明保護膜使用。 作為光學補償膜的環烯烴樹脂薄膜，係至少經單向延 伸者為宜。藉此’可賦與有適當的光學補償功能，而對液 日曰_示裝置的視角擴大（v£sual angle magnificat ion)有 所貝獻。經延伸之環烯烴樹脂薄膜的面内相位差值Rg，較 佳為40至l〇〇nm ’更佳為4〇至80mn。如面内相位差值R〇 在4〇nm以下或i〇0nm以上時，則對液晶面板之視角補償能 20 320832 200931083 力（visual angle compensati〇n abni1：y)可能會降低。 又，經延伸之環烯烴樹脂薄膜的厚度方向相位差值Rt/較 佳為80至，更佳為100至250nm。如厚度方向相位 差值Rth在80nm以下或在3〇〇nm以上時，則與上述同樣， 可能對面板之視角補償能力會有降低之傾向。同時，經延 伸之環烯烴系樹脂薄膜的面内相位差值R。及厚度方向相位 差值Rth，分別可以下述式（2)及（3)表示，例如，可利用 KOBRA 21ADH(王子計測機器（股）製）來測定。 ❹ Rfl=(nx-ny)xd ⑵Bass) (Ticona), ARTON (JSR), ZEONOR (Sakamoto Zeon), APEL (Ampei) (Mitsui Chemicals Co., Ltd.) System) and so on. When the cycloolefin resin is formed into a film to form a film, a known method such as a solvent casting method or a melt extrusion method can be suitably employed. In addition, it is also possible to use, for example, Essence (Shuishui Chemical Industry Co., Ltd.), SCA40 (made by Sekisui Chemical Industry Co., Ltd.), ZE0N0R film (made by Obudes Co., Ltd.), and ART0N film (jSR ( A commercially available product of a film made of a cycloolefin resin which has been previously formed into a film, etc., is used as a transparent protective film. The cycloolefin resin film as the optical compensation film is preferably at least one-wayly stretched. In this way, an appropriate optical compensation function can be imparted, and the v*sual angle magnification of the liquid crystal display device is provided. The in-plane retardation value Rg of the stretched cycloolefin resin film is preferably from 40 to 10 nm, more preferably from 4 to 80 nm. If the in-plane phase difference R 〇 is below 4 〇 nm or i 〇 0 nm or more, the viewing angle compensation energy of the liquid crystal panel may be lowered by 20 320832 200931083 (visual angle compensati〇n abni1: y). Further, the thickness direction phase difference Rt/ of the stretched cycloolefin resin film is preferably from 80 to more preferably from 100 to 250 nm. If the thickness direction phase difference Rth is 80 nm or less or 3 〇〇 nm or more, the viewing angle compensation ability of the panel may be lowered as described above. At the same time, the in-plane retardation value R of the stretched cycloolefin-based resin film. The thickness direction phase difference value Rth can be expressed by the following formulas (2) and (3), and can be measured, for example, by KOBRA 21ADH (manufactured by Oji Scientific Instruments Co., Ltd.). ❹ Rfl=(nx-ny)xd (2)

Rth= [ (nx+ny)/2-nz]xd (3) (上述式（2)、（3)中，nx為經延伸之環烯烴系樹脂薄膜的面 内遲相軸方向的折射率、ny為面内前相軸方向（與面遲相軸 方向垂直相父之方向）的折射率、ns為經延伸之環烯烴系樹 脂薄膜的厚度方向的折射率、d為經延伸之環烯烴系樹脂 薄膜的厚度。） ❾如上述之較佳折射率特性，除了適當調整延伸倍率及 延伸速度之外，可藉由適當選擇延仲時的預熱溫度、延伸 溫度、熱固（heat: setting)(於延伸後之薄膜的歪斜減輕處 理（distortion reducing treatment))溫度、冷卻溫度等 的各種溫度（包括溫度特性曲線（temperat;ure pattern)) 而賦與。如依比較緩和的條件實施延伸，可得如上述之較 佳折射率特性，例如，延伸倍率較佳為作成1〇5至丨.6倍， 更佳為1. 1至1. 5倍。在雙向延伸的情形，則作成最大延 伸方向的延伸倍率能成為上述範圍即可。 320832 21 200931083 經延伸之環烯烴樹脂薄膜的厚度，如過厚時則容易發 生加工性不佳，或透明性低落、偏光板重量過重等問題。 於是，經延伸之環烯烴樹脂薄膜的厚度，較佳為在4〇至 80 的範圍。 〇 本發明之偏光板，係如上述方式於偏先骐的單側，隔 介接合劑層而積層有延伸聚對苯二甲酸乙二酯薄膜，又因 應需要，於積層有偏光膜的延伸聚對苯二甲酸乙二酯薄膜 之側的相反面上積層保護膜或光學補償膜。作為在此等膜 互相間的貼合所用之接合劑者，從使接合劑層更薄的觀點 而。了例舉.水系者，亦即使接合劑成分溶解於水中者 或=散於水中者，較佳的接合劑，可例舉：使用聚乙稀醇 樹月曰或聚胺基甲酸酯樹脂作為主成分之組成物者。再者， ;偏光膜兩面分別進行薄膜之貼合時，則可採用同種接 合劑，亦可採用分別不同種接合劑。 ^作為接合義主成分喊錄乙料樹脂時，則 醇除了部分息化聚乙烯醇、完全息化聚乙輝 ^ ^ ’、°為.綾基改質聚乙烯醇、乙醯乙醯基改質驾 曾m基f聚乙稀醇、胺基改質聚乙烯醇等經故 作為接合=他二時’聚乙稀醇樹脂的水溶液’㈣ 水100重量[，、,劑中的聚乙稀醇樹脂的濃度，係擎 份。 刀 常為1至10重量份，較佳為1至5重i Μ Μ_腊的水溶液所成接合 合性起見，較佳為添 劑中，為了提升接 加乙二醛、水溶性環氧樹脂等硬化性 320832 22 200931083 成分、交聯劑。作為水溶性環氧樹脂者，例如，在由二 乙基二胺、二伸乙基四胺等的聚伸烧基多胺、與已二酸: . 的二羧酸的反應所得之聚醯胺基胺中，使表氣醇一 (epichlorohydrin)反應所得之聚醯胺聚胺環氧樹脂报、商 合使用。此種聚醯胺聚胺環氧樹脂的市售品，可例 SUMIREZ(須美雷斯）樹脂650(住化化學科技（股）製）、· SUMIREZ樹脂675(住化化學科技（股）製）、ws_525(日本娵c 〇 (股）製）等。此等硬化性成分、交聯劑的添加量（如一起添 加時則為其合計量），係相對於聚乙烯醇樹脂1〇〇重量份*， 通常為1至100重量份，較佳為U5〇重量份。因上』硬 化性成分、交聯劑的添加量係相對於聚乙稀醇樹脂⑽重 量份，為1重量纽下時，則可能接合性提升的效果變小， ^，如上述硬化性部分、交聯劑的添加量係相對於聚乙烯 醇系樹脂100重量份，為100重量份以上時， 劑層會變脆之故。 ' i 〇 如作為接合咖主成分而使用聚胺基甲酸g旨樹脂時， 則作為適當的接合劑組成物的例，可例舉：聚酯離子聚合 物（ionoroer)型聚胺基甲酸酯樹脂與具有縮水甘油氧基之 化合物的混合物。在此所謂聚酯離子聚合物型聚胺基曱酸 酯樹脂，係指具有聚酯骨架之聚胺基甲酸酯樹脂之意，而 =其中導人少量離子性成分（親水成分）者。由於此^離子 聚合物型聚胺基甲酸酯樹脂，因係不使用乳化劑之下能直 接在水中乳化而成為乳液（emulsi〇n),故作為水系的接合 劑报適合。 、口 320832 23 200931083 聚酯離子聚合物型聚胺基甲酸酯樹脂本身係周知者， 例如’日本專利特開平7_97504號公報中，作為例子而記 載有使紛樹脂分散於水性媒體中之高分子分散劑，又，上 述之日本專利特開2005-70140號公報（專利文獻2)、曰本 專利特開2005-208456號公報（專利文獻4)中，揭示有將 〇 Ο 聚酯離子聚合物型聚胺基甲酸酯樹脂與具有縮水甘油氧基 之化合物的混合物作為接合劑，而於由聚乙烯醇樹脂所成 之偏光膜上黏接環烯烴樹脂薄膜之形態。 於偏光膜上，作為貼合上述延伸聚對苯二曱酸乙二醋 薄膜（及因應需要時，保護膜或光學補償膜）之方法，通常 採用-般所周知者即可，可例舉：藉由流延法、邁耶式镶 條塗佈法、凹版塗佈機、逗號塗佈法（c〇mmac〇ating)、塗 膠刀法（doctor’s biade⑽㈣）、壓模塗佈法(die =atlng)、浸塗法、喷霧法等而於偏光膜及/或此處所貼 :之薄膜的黏接面塗佈接合劑、並重疊兩者之方法。流滅 =指將作為被塗佈物之薄膜’ 一面往大約垂直方向，大 面=平方向，或者兩者之_斜向方向移動，—面於其表 机涎接合劑以使擴散塗佈之方法之意。 在依上述方法塗佈接合劑之後， 偏光骐與貼合於此之上的薄膜之間滴下接人:。又，於 子笪Λ『 凋下接合劑後，使用釵 時:=物以均勻舖開之方法亦很適合使用。此 吁輥子的材質，能採用金屬或橡膠此 勝與貼合於此上之薄膜之間滴下接合劑後:此 320832 24 200931083 過輥子與輥子之間，並加壓以舖開之方法亦彳艮適合採用。 . 此時此等輥子可為同樣材質者，亦可為相異材質者。再者， . 於乾燥或硬化前，使用上述夾軸等所貼合後的接合劑層的 厚度，較佳為5 # m以下，0. 01 # m以上。 又，於接合劑層表面’為了提升接合性起見，可適當 實施電漿（plasma)處理、電暈（corona)處理、紫外線時射 處理、火焰處理（flame curing)、皂化處理等表面處理。 〇 4化處理可例舉：浸潰於氫氧化鈉或氫氧化鉀般的驗性水 溶液中之方法。 、士”由上述水糸接合劑而接合之積層物，通常實施車 燥處理，以進行接合劑的乾燥、硬化。乾燥處理，例如3 藉由熱風之喷吹來進行。乾燥溫度，係從4〇至1〇〇它程度 =佳為從60至10(TC的範圍適當選擇。乾燥時間，例如% 至1200秒鐘程度。乾燥後的接合劑層的厚Rth=[ (nx+ny)/2-nz]xd (3) (In the above formulas (2) and (3), nx is a refractive index in the in-plane slow axis direction of the extended cycloolefin-based resin film, Ny is the refractive index in the in-plane front-axis direction (the direction perpendicular to the surface of the surface retardation axis direction), ns is the refractive index in the thickness direction of the extended cycloolefin-based resin film, and d is the extended cycloolefin system. The thickness of the resin film.) For the preferred refractive index characteristics as described above, in addition to appropriately adjusting the stretching ratio and the stretching speed, the preheating temperature, the stretching temperature, and the heat setting can be appropriately selected by the delay. (Differential reducing treatment of the film after stretching) Various temperatures (including a temp pattern) such as temperature and cooling temperature are applied. 1-5. The ratio is preferably from 1. 1 to 1.5 times, more preferably from 1. 1 to 1.5 times, as a result of the above-mentioned. In the case of bidirectional stretching, the stretching ratio in the maximum extension direction can be in the above range. 320832 21 200931083 The thickness of the stretched cycloolefin resin film, if it is too thick, is liable to cause poor workability, low transparency, and excessive weight of the polarizing plate. Thus, the thickness of the stretched cycloolefin resin film is preferably in the range of 4 Å to 80 Å. The polarizing plate of the present invention is formed by laminating a polyethylene terephthalate film with a layer of a bonding agent as described above, and a stretching film having a polarizing film laminated thereon as needed. A protective film or an optical compensation film is laminated on the opposite side of the side of the ethylene terephthalate film. The bonding agent used for bonding these films to each other is from the viewpoint of making the bonding layer thinner. For example, if the binder component is dissolved in water or if it is dispersed in water, a preferred binder may be exemplified by using a polyvinyl sulphate or a polyurethane resin as the binder. The composition of the main component. Further, when the film is bonded to both sides of the polarizing film, the same kind of bonding agent may be used, or different kinds of bonding agents may be used. ^ As the main component of the joint meaning of the B resin, the alcohol in addition to the partial poly-polyvinyl alcohol, fully acetylated Hui ^ ^ ^, ° 绫 改 modified polyvinyl alcohol, acetonitrile modified Driving a m-f-polyethylene glycol, an amine-modified polyvinyl alcohol, etc. as a joint = the second aqueous solution of 'polyethylene glycol resin' (4) water 100 weight [,,, the polyethylene glycol in the agent The concentration of the resin is the engine part. The knives are usually from 1 to 10 parts by weight, preferably from 1 to 5 parts by weight, based on the bonding properties of the aqueous solution, preferably in the addition, in order to enhance the addition of glyoxal, water-soluble epoxy Hardening property such as resin 320832 22 200931083 Component, crosslinking agent. As the water-soluble epoxy resin, for example, a polydecylamine obtained by reacting a polyalkylene polyamine such as diethyldiamine or diethylenetetramine with a dicarboxylic acid of adipic acid: In the base amine, the polyamidamine polyamine epoxy resin obtained by the epichlorohydrin reaction is reported to be used in combination. A commercially available product of such a polyamine polyamine epoxy resin is exemplified by SUMIREZ resin 650 (manufactured by Susei Chemical Technology Co., Ltd.), SUMIREZ resin 675 (manufactured by Susei Chemical Technology Co., Ltd.) , ws_525 (Japanese 娵c 〇 (share) system) and so on. The amount of the curable component and the crosslinking agent added (total amount when added together) is usually 1 to 100 parts by weight, preferably U5, per 1 part by weight of the polyvinyl alcohol resin. 〇 by weight. When the amount of the hardening component and the crosslinking agent added is 1 part by weight or less based on the weight of the polyvinyl alcohol resin (10), the effect of improving the bondability may be small, ^, as in the above-mentioned hardenability portion, When the amount of the crosslinking agent added is 100 parts by weight or more based on 100 parts by weight of the polyvinyl alcohol-based resin, the layer of the agent becomes brittle. For example, when a polyurethane resin is used as the main component of the coffee, an example of a suitable binder composition is exemplified by a polyester ionomer (ionoroer) type polyurethane. A mixture of a resin and a compound having a glycidoxy group. The term "polyester ionomer type polyamine phthalate resin" as used herein means a polyurethane resin having a polyester skeleton, and = a small amount of an ionic component (hydrophilic component). Since this ionic polymer type polyurethane resin is an emulsion which can be directly emulsified in water without using an emulsifier, it is suitable as a water-based bonding agent. </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> <RTIgt; In the above-mentioned Japanese Patent Laid-Open Publication No. Hei. No. 2005-70140 (Patent Document 2), Japanese Patent Laid-Open Publication No. Hei No. 2005-208456 (Patent Document 4) discloses a ruthenium polyester ionic polymer type. A mixture of a polyurethane resin and a compound having a glycidoxy group is used as a binder, and a cycloolefin resin film is adhered to a polarizing film made of a polyvinyl alcohol resin. The method of bonding the above-mentioned extended polyethylene terephthalate film (and, if necessary, a protective film or an optical compensation film) to the polarizing film is generally known as a general-purpose film, and may be exemplified by: By casting method, Meyer type strip coating method, gravure coater, comma coating method (c〇mmac〇ating), glue knife method (doctor's biade (10) (four)), die coating method (die = atlng ), a dip coating method, a spray method, or the like, in which a bonding agent is applied to the polarizing film and/or the bonding surface of the film attached thereto, and the two are superposed. Flow out = means that the film as the object to be coated is moved to the direction of the vertical direction, the large surface = the flat direction, or the direction of the both directions, and the surface is bonded to the surface of the coating to spread the coating. The meaning of the method. After the bonding agent is applied as described above, the polarizing enthalpy is dropped between the film and the film bonded thereto. In addition, after using the 钗 后 = 接合 接合 接合 = = = = = = = = = = = = = = = = = = = = = The material of the roller can be made of metal or rubber. After the bonding agent is dropped between the film and the film attached thereto: this 320832 24 200931083 is between the roller and the roller, and is pressed to spread. Suitable for use. At this time, these rollers can be of the same material or different materials. Further, the thickness of the adhesive layer to be bonded using the above-mentioned nip or the like is preferably 5 # m or less, and 0.011 m or more. Further, in order to improve the bonding property, the surface of the bonding agent layer may be subjected to surface treatment such as plasma treatment, corona treatment, ultraviolet radiation treatment, flame curing, or saponification treatment. The 〇 4 treatment can be exemplified by a method of immersing in an aqueous solution of sodium hydroxide or potassium hydroxide. The laminate which is joined by the above-described hydrazine cement is usually subjected to a drying process to dry and harden the bonding agent. The drying treatment is performed, for example, by hot air blowing. The drying temperature is from 4 〇 to 1 〇〇 degree = preferably from 60 to 10 (the range of TC is appropriately selected. Drying time, for example, % to 1200 seconds. Thickness of the bonding layer after drying

Q =至‘程度，以_^上為佳，又較佳為T 更佳為l#m以下。如接合劑層的厚度過厚時， 勿成為偏光板的外觀不良。 常實t處理之後，可在室溫以上的溫度下至少半天，^ 此種心日以上的熟成（euHng)以獲得充分的黏接強度。 較佳型上’係在經卷取為輥錄的狀態下實施。 成溫度為30至抓的範圍，更佳為机以上， 下，容熟成溫度在啊以上時，則在卷成輥筒狀薄 別限定，惟較H的「卷緊」。再者，熟成時的濕度並不半 争佳為選擇相對濕度能成為0%RH至7〇%RH之寿 320832 25 200931083 度。熟成時間通常為1曰至10曰程度，較佳為2曰至7曰 ，程度。 .， 又’在本發明之偏光板中之接合劑，亦可採用光硬化 性接合劑。光硬化性接合劑’可例舉：光硬化性環氧樹脂 與光陽離子聚合起始劑等的混合物。在此情形，藉由照射 活性能量射線（active energy ray)，使光硬化性接合劑硬 化。活性能量射線的光源並不特別加以限定，惟較佳為在 &amp; 波長400nm以下時具有發光分佈之活性能量射線，具體而 言，較佳為低壓水銀燈、中壓水銀燈、高壓水銀燈、超高 壓水銀燈、化學燈（chemicai 1卿）、黑光燈（black lamp)、微波激勵水銀燈（micr〇wave⑽…心1卿） 等。. 〇 對光硬化性接合劑的光照射強度，係視該光硬化性接 合劑的組成而適當決定，故並不特別加以限定，惟較佳為 聚合起始劑的活性化上有效的波長區域的照射強度在 至6000mW/cm2.者。如該照射強度為〇. lmW/cm2以上則反 應時間不致於過長，如為_mW/em2以下，則陳光源所 輕射之熱及光硬化性接合義硬化時的發熱利起之 樹脂的黃㈣偏光朗劣化發生之可能性低。對光硬化性 接合劑的光照射時間，只要是使其硬化時能與光硬化性接 合劑一起控制者則並不特別加以限制，惟較佳為以上述昭 射強度與照射時間的乘積表示之計算光量能成為ι〇 ^ i〇〇〇〇m^^)/m^ 0 =、光1為HW/cm以上時，則能使源自聚合起始劑的活 32〇832 26 200931083 性核種（active nucl ide)產生屈金α θ . .應，同時，軸二=定能進行硬化反 維射#± &amp; 幻“、、射時間不會變太長而能 層的厚ν·ϋ*ι。在此’活性能量射線照射後的接合劑 為_至5——…為 較佳為以下，更佳為1//m以下。 較井2ft活性能量射線而使光硬化轉合劑硬化時， ο 延述偏細的偏光度、穿透度及色彩（㈣，以及 明性2=甲酸乙二酯薄膜、保護臈、光學補償膜的透 專偏光板的諸功能不致於降低的條件下進行硬化。 —本發明之偏光板，較佳為於積層有偏光膜的延伸聚對 =甲酸乙二S旨之侧之相反側的外面(如積層有保護薄膜 5先學補償膜時’則積層於該保護膜或光學補償膜的偏光 膜上之側的相反侧之面），形成有將該偏光板貼合於液晶片 之膠黏劑層。可使用於此種膠黏劑層之膠黏劑者，可採用 乂在周知的適當膠黏劑，可例舉：丙烯酸酯膠黏劑、聚胺 基甲酸酯膠黏劑、聚矽氧膠黏劑等。其中，從透明性、黏 接力、可靠性、再加工（reworking)性等的觀點來看，丙烯 ^酉曰膠黏劑很適合使用。膠黏劑層’係將此種膠黏劑，例 如以有機溶劑溶液的形態使用，除了可設置藉由使用壓模 塗佈機或凹版塗佈機等而塗佈於基材膜上，再使其乾燥之 方法之外’尚可設置藉由將經形成於實施有脫模處理之塑 膠薄膜（亦稱為分離膜（separating film))上之片材狀膠 黏劑轉寫（transfer)到基材膜之方法。膠黏劑層的厚度並 不特別加以限制，惟一般在2至40#m的範圍内為宜。 27 320832 200931083 亦可於偏光板外面’隔介該膠黏層而膠接有光學功能 . 性膜。作為光學功能性膜者，例如，除了以上述纖維素膜 . 或環烯烴薄膜作為基材之光學補償膜之外，尚可舉：於基 材表面塗佈有液晶性化合物，並定向之光學補償膜、穿透 某種偏光光（polarized light) ’而反射顯示與此相反的性 質之偏光光之反射型偏光膜、由聚碳酸酯樹脂所成之相位 差膜、於表面具有凹凸形狀之附防閃光功能之薄膜、附防 止表面反射處理之薄膜、於表面具有反射功能之反射膜、 ® 具有合併反射功能與穿透功能之半穿透反射膜等。相當於 基材表面塗佈有液晶性化合物並經定向之光學補償膜之$ 售品，可例舉：WV薄膜（富士膠卷(股）製）、NH薄膜（新日 本石油（股）製）、NR薄膜（新曰本石油（股）製）等。穿透某 種偏光光，而反射顯示與此相反性質之偏光光之反射型偏 光膜之市售品可例舉：DBEF(3M社製，在日本則可從住友 3M(股）取得）等。又，由環狀聚烯烴系樹脂所成之相當於相 ❹位差膜之市售品可例舉：ART0N(亞頓）薄膜（JSR(股)製）、 埃斯西拿（積水化學工業（股）製）、ZE0N0R(哲諾亞）薄膜 (0PUTESU(股）製）等。 本發明，亦提供一種具備有使上述本發明之偏光板， 介由膠黏劑層而貼合於液晶片之液晶面板的液晶顯示裝 置。此時，本發明之偏光板即貼合於液晶片的背面侧或前 面侧，或者背面側和前面侧。此種本發明之液晶顯示裝置， 係由於具備有本發明之偏光板經貼合於液晶片的背面之)夜 晶面板，故可對應薄壁化且仍具有足夠的機械性強度，再 320832 28 200931083 者’由於液晶面板的背面侧配置有本發明之偏光板的延伸 聚對苯二曱酸乙二薄膜，故可提供能防止液晶面板與背光 系統的接觸之液晶顯示裝置。於本發明之液晶顯示裝置 中，就上述之特徵以外的部分而言，可採用以往周知的液 晶顯示裝置的適當結構，故液晶顯示裝置，除了液晶面板 以外，其餘通常具備之構成要件（光擴散板、背光板等）方 面，則並無特別有所限制。 再者’光擴散板（light diffusion plate)，係指具有 ® 使來自背光板的光擴散之功能之光學構件，例如可採用： 使光擴散劑之粒子分散於熱塑性樹脂中以賦與光擴散性 者、於熱塑性樹脂板表面形成凹凸以賦與光擴散性者、於 熱塑性树知板表面設置分散有粒子之樹脂組成物的塗佈層 以賦與光擴散性者等。光擴散板的厚度，並不特別加以限 制，較佳為0. 1至5匪的範圍。又，於光擴散板與液晶面 板之間，亦可配置稜鏡片材（prism sheet)(亦稱為聚光片 ❹材（focusing sheet)，例如，相當於bef(3M社製）等）、亮 度提升片材（與上述之反射型偏光膜相同者（上述之⑽EF 等））、光擴散片材等，顯示其他光學功能性之片材。顯示 其他光學功能性之片材，因應需要時，亦可配置複數種。 再者，作為光擴散板，亦能採用例如，在表面具有圓筒形 的形狀之稜鏡片材與光擴散板的積層一體品（例如，日本專 利特開2006-284697號公報中所記載者）般，於光擴散功能 中複合其他功能之光學片材。 本發明之偏光板，可在背光板/光擴散板/光擴散片 320832 29 200931083 材/冗度&amp;·升片材/液晶片的結構成中適合使用。再者， 上述之液晶片、液晶面板的「背面側」，係指將液晶面板裝 . 載於液晶顯示裝置中時的背光板側之意’而液晶片、液晶 面板的「前面侧」’係指將液晶面板裝載於液晶顯示裝置中 時的目視侧之意。 【實施方式】 [實施例] 以下，將列舉出實施例，藉以更詳細說明本發明内容， 惟本發明並不因此等實施例而有所限定。再者，例中，表 示含量及使用量之％及份，除非特別備註，均為重量基準。 以下的例中，延伸聚對苯二甲酸乙二酯薄膜的面内相位差 值Rm、由延伸降冰片烯系樹脂所成光學補償膜的面内相位 差值R。及厚度方向相位差值Rth，係（使用21 ADH(王 子計測機器（股）製）所測定之值。又，延伸聚對苯二甲酸乙 二酯薄膜的定向主軸的歪斜最大值及M〇R係使用微波透過 〇 型分子配向計（王子製紙（股）製）測定之值。又，表示抗靜 電性能之表面電阻值，係指使用表面固有電阻測定裝置 H1 rest-up MCP-HT45 0 (三菱化學（股）製）所測定之值。 〈實施例1&gt; 將平均聚合度約2400、皂化度99. 9莫耳％以上而厚度 75/zm的聚乙烯醇薄膜，浸潰於3〇£&gt;(：：的純水後，在3〇。〇下 改潰於蛾/換化鉀/水的重量比為0.02/2/100的水溶液 中。然後’在56. 5。(：下浸潰於峨化鉀/硼酸/水的重量比 為12/5/100的水溶液中。接著，使用8。〇的純水洗滌後， 30 320832 200931083 在阶下乾燥，製得碘已吸附定向於聚乙料之偏光膜。 延伸作業，主要在碘染色及硼酸處理的過程中進 婢叶 延伸倍率為5.3倍。 〜 壬=如上述方式所得偏光膜的單側，將厚度dm37#m的 延伸，對笨二甲酸乙二醋薄膜（面内相位差值Rm: 1900 nm，定向主軸的歪斜最大值：4度、M〇R : 2 〇)，經於其貼 合面施加電暈處理後，隔著光硬化型接合劑加以黏接貼合。 接著’於偏光膜之積層有延伸聚對苯二曱酸乙二酯薄 、、Ή的相反側，將厚度73 # m的延伸降冰片婦系樹脂所 成光學補償膜（面内相位差值匕：63nm、厚度方向相位差值 心：225nm)，於其貼合面施加電暈處理後，隔著光硬化型 接合劑而加以接合，製得偏光板 所彳于偏光板為不易撕裂者，又，與通常的偏光板比較 時，發現已輕量化。於此偏光板的光學補償膜外面設置厚 度25ym的丙烯酸酯系膠黏劑之層，將形成有該膠黏劑層 ❹之光學補償膜的外面側配置在液晶片的背面，而於液晶片 的前面配置市售的偏光板（須美卡蘭SRW 842E-GL5,住友 化學（股）製）以組裝液晶面板，並採用此面板，製作按市售 的月光板/光擴散板/光擴散片材/光擴散片材/液晶面 板的順序所構成之液晶顯示裝置：就所得液晶顯示裝置， 依目視觀察顯示之結果，並未確認因與背光板的接觸所引 起之不均勻情況。又，從斜向方向觀看時亦未蜂認有源自 聚對笨一曱酸乙二酯薄膜之干擾不均勻，目視性係良好者。 〈實施例2&gt; 320832 31 200931083 又，於上述偏光膜的單侧，將厚度·“ 聚對苯二甲酸乙二醋薄膜，於其貼合面施加電暈處t伸 隔著接合劑而加以貼合。 哎俊’ 接著’於偏光膜之積層有延伸聚對苯二甲酸乙 膜之側的相反侧，將厚度…m之由雙向延伸降冰 樹脂所成之光學補償膜（面内相位差心。：63咖，厚度方向 相位差值R‘ 225nm)，於其貼合面施加電暈處理後，隔著 Ο Ο 接合劑而加以接合，製得偏光板。再者，單向延伸聚 ，甲酸乙二醋薄膜及由雙向延伸降冰片婦系樹脂所成光學 ，償膜麟其等的遲相_與該偏域的延伸軸垂直相 父之方式加以貼合。 於背面侧偏光板之由雙向延伸降冰片烯樹脂所成光學 補償膜表面’設置含有抗靜電劑之踢黏劑（25_厚）的層。 :膠黏劑層’係相對於丙烯酸酯膠_ 1〇〇份，作為抗靜 =劑而使用含有離子導電性組成物（N—己基+甲基錢錄 = 醯基）酿亞胺）3份之含抗靜電劑之膠黏劑加 ^成纟所得偏光板測定當剝離膠黏劑表面的隔板時的 2劑的表面電阻值之結果，為6· _%/□，而顯示有 ν的抗靜電能。 &lt;實施例3&gt; 除了不形成含有抗靜電劑之膠黏劑層，而於由延伸聚 板：一：酸乙：S:薄膜/偏光膜〆光學補償膜所成之偏光 之=伸聚對苯二甲酸乙二㈣膜表面，形成含有抗靜電 &quot;佈層（厚度：3㈣以外，其餘按與實施例1同樣方 320832 32 200931083 式製作偏光板。塗佈層的形成’職用季戊四醇三丙稀酸 酯與多官能胺基甲酸酯化丙烯酸酯（六亞甲基二里 ，與季戊_三_酸_反應生絲）按重量比⑼/4〇，而曰 按固形成分濃度60%溶解於醋酸酯中，且含有調平劑 (leveling agent)之紫外線硬化性樹脂組成物。作為光聚 合起始劑而將lrgacure 184(汽巴•特殊化學品社製）對該 樹脂組成物按重量比成為5份之方式，作為抗靜電劑而將 五氧化銻對該樹脂組成物按重量比成為75份之方式添 加，以調製塗佈液。按乾燥後的塗膜厚度能成為3em之方 式進行該塗佈膜之塗佈，於設定為6代之乾燥機中乾燥3 分鐘後，從光硬化性樹脂組成物層侧，以h射線換算光量 計，按能成為20〇mJ/cm2之方式照射強度2〇mW/咖2之來自 高壓水銀燈之光，以使紫外線硬化性樹脂組成物層硬化而 形成含有抗靜電劑之塗佈層。 按與《施例2同樣方式測定表面電阻值之結果，盆為 〇 ΐχΐ〇10Ω/Π &gt; 而顯不南度的抗靜電能β Μ 〈實施例4&gt; 準備厚度40/zm之延伸纖維素樹脂薄膜（1[(：4叩_1 (KonicaMinolta光學社製）、面内相位差值Rd: 45nm、厚 度方向相位差值Rth:125nm)，並於其接合祕加電暈處理。 另外，準備厚度37em、模糊度17%之單向延伸聚對苯二甲 酸乙二酯薄膜（定向主軸的歪斜（對延伸軸之錯位角度）的 最大值.2度、面内相位差值Rm : 3g〇〇nm)，並於其接合 面施加電暈處理。 320832 33 200931083 於如上述方式所得偏光膜的單侧，隔著光硬化型接合 劑而貼合•接合延伸纖維素樹脂薄膜的電暈處理面，另一 侧則同樣貼合•接合單向延伸聚對苯二曱酸乙二酯薄膜的 ▼ 電暈處理面，製得偏光板。該偏光板，係較通常的偏光板 為輕量化。於該偏光板之延伸纖維素樹脂薄膜外面，設置 厚度25/ζιη的丙烯酸酯膠黏劑之層。將偏光板配置於已形 成該膠黏劑層之延伸纖維素樹脂薄膜外面側之液晶片的背 面，於液晶片的前面配置市售的偏光板以組裝液晶面板， ® 並將此與市售的光擴散板、背光板組合以製作液晶顯示裝 置。以目視觀察液晶顯示裝置的顯示之結果，並未看到因 與背光板的接觸所引起之不均勻情況。 〈比較例1&gt; 除了於實施例4中不用單向延伸聚對苯二曱酸乙二酯 薄膜而採用已表面皂化處理之三乙醯基纖維素薄膜以外， 其餘則按與實施例1同樣方式，製得偏光板。與實施例1 0 同樣，在形成膠黏劑層後，配置於液晶片之背面並組裝液 晶面板，以製作液晶顯示裝置，再觀察顯示之結果，看到 因與背光板的接觸所引起之不均勻情況。 【圖式簡單說明】 無。 .【主要元件符號說明】 無0 34 320832Q = to ‘degree, preferably _^, and preferably T is better than l#m. If the thickness of the bonding agent layer is too thick, the appearance of the polarizing plate is not good. After the usual t treatment, the ripening (euHng) above the heart can be obtained at a temperature above room temperature for at least half a day to obtain sufficient bonding strength. The preferred type is carried out in a state where it is taken up as a roll. The temperature is 30 to the gripping range, more preferably the machine is above, and when the temperature is above the capacity, the roll is rolled into a thin shape, but it is "rolled up". Furthermore, the humidity at the time of ripening is not half-best. The relative humidity can be chosen to be 0% RH to 7〇% RH. Lifetime 320832 25 200931083 degrees. The ripening time is usually from 1 曰 to 10 ,, preferably from 2 曰 to 7 曰, to the extent. Further, the bonding agent in the polarizing plate of the present invention may be a photocurable bonding agent. The photocurable bonding agent' may, for example, be a mixture of a photocurable epoxy resin and a photocationic polymerization initiator. In this case, the photocurable bonding agent is hardened by irradiation with an active energy ray. The light source of the active energy ray is not particularly limited, but is preferably an active energy ray having a light-emitting distribution at a wavelength of 400 nm or less. Specifically, a low-pressure mercury lamp, a medium-pressure mercury lamp, a high-pressure mercury lamp, and an ultra-high pressure mercury lamp are preferable. , chemical lamps (chemicai 1 Qing), black light (black lamp), microwave-activated mercury lamps (micr〇wave (10) ... Xin 1 Qing) and so on. The light-irradiating strength of the photocurable bonding agent is appropriately determined depending on the composition of the photocurable bonding agent, and is not particularly limited, but is preferably a wavelength region effective for activation of the polymerization initiator. The irradiation intensity is up to 6000 mW/cm2. If the irradiation intensity is 〇. lmW/cm2 or more, the reaction time is not too long, and if it is _mW/em2 or less, the heat of the light source of the Chen light source and the heat of the photohardenable joint hardening resin are increased. The possibility of yellow (4) partial polarization degradation is low. The light irradiation time of the photocurable bonding agent is not particularly limited as long as it can be controlled together with the photocurable bonding agent when it is cured, but it is preferably expressed by the product of the above-mentioned incident intensity and irradiation time. When the calculated light quantity becomes ι〇^ i〇〇〇〇m^^)/m^ 0 = and the light 1 is HW/cm or more, the living nucleus derived from the polymerization initiator can be made 32(832 26 200931083 ( Active nucl ide) produces a nucleus α θ . . , at the same time, the axis 2 = can be hardened anti-dimension # ± & 幻 ",, the shooting time does not become too long and the thickness of the layer ν · ϋ * ι Here, the binder after the irradiation of the active energy ray is preferably _ to 5, more preferably 1/m or less. When the photohardening converter is hardened by 2 ft of active energy ray, ο The hardening of the partial polarizing degree, the transparency and the color ((4), and the function of the transparent polarizing plate of the ethylene glycol film, the protective ruthenium, and the optical compensation film are not reduced. - the polarizing plate of the present invention, preferably opposite to the side of the extended poly-pair = formic acid E-S layer having a polarizing film laminated The outer surface (on the side opposite to the side on the side of the protective film or the polarizing film of the optical compensation film when the protective film 5 is laminated with the compensation film) is formed, and the polarizing plate is bonded to the liquid crystal sheet. Adhesive layer. For the adhesive used in the adhesive layer, a suitable adhesive known in the art can be used, and an acrylate adhesive or a polyurethane adhesive can be exemplified. , polyoxylized adhesives, etc. Among them, from the viewpoints of transparency, adhesion, reliability, reworking, etc., propylene adhesives are very suitable for use. Adhesive layer 'system Such an adhesive is used, for example, in the form of an organic solvent solution, and may be provided by being applied to a substrate film by a die coater or a gravure coater, and then dried. 'A method of transferring a sheet-like adhesive formed on a plastic film (also referred to as a separating film) subjected to release treatment to a substrate film can be provided. The thickness of the adhesive layer is not particularly limited, but is generally in the range of 2 to 40 #m. 27 320832 200931083 It is also possible to bond the adhesive layer on the outside of the polarizing plate to bond the optical function. The film is used as an optical functional film, for example, in addition to the above cellulose film or a cycloolefin film as a substrate. In addition to the optical compensation film, a liquid crystal compound is coated on the surface of the substrate, and an optical compensation film oriented, which penetrates a certain polarized light, and reflects a polarized light having the opposite property Light-reflective polarizing film, retardation film made of polycarbonate resin, film with anti-glare function with uneven shape on the surface, film with anti-reflection treatment, reflective film with reflective function on the surface, ® A semi-transmissive reflective film having a combined reflection function and a penetrating function. A commercially available product of an optical compensation film coated with a liquid crystal compound and having an oriented optical compensation film may be, for example, a WV film (made by Fujifilm Co., Ltd.) or an NH film (manufactured by Nippon Oil Co., Ltd.). NR film (manufactured by Shin Sakamoto Oil Co., Ltd.). A commercially available product of a reflective polarizing film that reflects a polarized light of the opposite nature and which reflects the polarized light of the opposite nature can be exemplified by DBEF (manufactured by 3M Corporation, available from Sumitomo 3M (share) in Japan). Further, a commercial product equivalent to a phase difference film formed of a cyclic polyolefin resin can be exemplified by ART0N (Aden) film (manufactured by JSR), and Essina (Shuishui Chemical Industry Co., Ltd.) () system), ZE0N0R (Zenoa) film (0PUTESU (share) system) and so on. Further, the present invention provides a liquid crystal display device comprising a liquid crystal panel in which the polarizing plate of the present invention is bonded to a liquid crystal panel via an adhesive layer. In this case, the polarizing plate of the present invention is bonded to the back side or the front side of the liquid crystal cell, or the back side and the front side. Since the liquid crystal display device of the present invention has the night crystal panel in which the polarizing plate of the present invention is bonded to the back surface of the liquid crystal cell, it can be made thinner and has sufficient mechanical strength, and then 320832 28 In the case of the back side of the liquid crystal panel, the extended polyethylene terephthalate film of the polarizing plate of the present invention is disposed, so that a liquid crystal display device capable of preventing contact between the liquid crystal panel and the backlight system can be provided. In the liquid crystal display device of the present invention, a portion other than the above-described features can be suitably configured as a conventional liquid crystal display device. Therefore, the liquid crystal display device generally has a constituent element (light diffusion) in addition to the liquid crystal panel. There are no special restrictions on the board, backlight board, etc. Further, 'light diffusion plate' means an optical member having a function of diffusing light from a backlight, for example, by dispersing particles of a light diffusing agent in a thermoplastic resin to impart light diffusibility. A coating layer in which irregularities are formed on the surface of the thermoplastic resin sheet to impart light diffusibility, and a resin composition in which particles are dispersed is provided on the surface of the thermoplastic resin board to impart light diffusibility. The thickness of the light-diffusing sheet is not particularly limited, and is preferably in the range of 0.1 to 5 inches. Further, a prism sheet (also referred to as a focusing sheet, for example, bef (manufactured by 3M)), and brightness may be disposed between the light diffusing plate and the liquid crystal panel. The sheet is lifted (the same as the above-described reflective polarizing film (the above (10) EF, etc.)), a light-diffusing sheet, or the like, and other optically functional sheets are displayed. Other optical functional sheets are displayed, and a plurality of sheets may be configured as needed. In addition, as the light-diffusing sheet, for example, a laminated product of a sheet material having a cylindrical shape on the surface and a light-diffusing sheet can be used (for example, as described in Japanese Laid-Open Patent Publication No. 2006-284697) In general, optical sheets of other functions are combined in the light diffusion function. The polarizing plate of the present invention can be suitably used in the structure of a backlight/light diffusing plate/light diffusing plate 320832 29 200931083 material/redundancy & liter sheet/liquid crystal sheet. In addition, the "back side" of the liquid crystal panel and the liquid crystal panel refers to the meaning of the backlight panel side when the liquid crystal panel is mounted on the liquid crystal display device, and the "front side" of the liquid crystal panel or the liquid crystal panel is It means the visual side when the liquid crystal panel is mounted in the liquid crystal display device. [Embodiment] [Examples] Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited thereto. Further, in the examples, the % and the parts of the content and the amount used are based on weight unless otherwise noted. In the following examples, the in-plane phase difference value Rm of the polyethylene terephthalate film was extended, and the in-plane phase difference R of the optical compensation film formed by the extended norbornene-based resin. And the thickness direction phase difference Rth is the value measured by 21 ADH (manufactured by Oji Scientific Instruments Co., Ltd.). Further, the skew maximum value of the oriented main axis of the polyethylene terephthalate film and M〇R It is a value measured by a microwave through a 〇-type molecular alignment meter (manufactured by Oji Paper Co., Ltd.), and a surface resistance value indicating an antistatic property is a surface-specific resistance measuring device H1 rest-up MCP-HT45 0 (Mitsubishi <Measurement Example> <Example 1> A polyvinyl alcohol film having an average degree of polymerization of about 2400, a degree of saponification of 99.9 mol% or more and a thickness of 75/zm was impregnated at 3 &gt; (:: after pure water, at 3 〇. Under the armor, the weight ratio of moth/potassium/water is 0.02/2/100. Then ' at 56.5. In the aqueous solution of potassium bromide/boric acid/water in a weight ratio of 12/5/100. Then, after washing with pure water of 8. 〇, 30 320832 200931083, drying under the order, the iodine has been adsorbed and directed to the polyethylene. Polarized film of the material. Extended operation, mainly in the process of iodine dyeing and boric acid treatment 5.3 times 〜 壬 = one side of the polarizing film obtained as described above, the extension of the thickness dm37#m, the film of the ethylene diacetate film (in-plane phase difference Rm: 1900 nm, the skew maximum of the orientation main axis: 4 degrees, M〇R: 2 〇), after applying corona treatment on the bonding surface, bonding is performed through a photo-curing bonding agent. Then, there is an extended poly-p-benzoquinone in the laminate of the polarizing film. The opposite side of the acid ethylene diester and the opposite side of the crucible, the optical compensation film (in-plane phase difference 匕: 63 nm, thickness direction phase difference: 225 nm) of the extended norbornene resin of thickness 73 # m After the corona treatment is applied to the bonding surface, the bonding is performed via a photocurable bonding agent, and the polarizing plate is made to be less likely to be torn on the polarizing plate, and is found to be lighter when compared with a normal polarizing plate. A layer of an acrylate-based adhesive having a thickness of 25 μm is disposed on the outer surface of the optical compensation film of the polarizing plate, and an outer surface side of the optical compensation film on which the adhesive layer is formed is disposed on the back surface of the liquid crystal film, and the liquid crystal film is disposed on the liquid crystal film. The front is equipped with a commercially available polarizer (Sukalan Karan SRW 842E-GL5, In order to assemble a liquid crystal panel, and to use the panel, a liquid crystal display device comprising a commercially available moonlight panel/light diffusing panel/light diffusing sheet/light diffusing sheet/liquid crystal panel is prepared: As for the obtained liquid crystal display device, the unevenness caused by the contact with the backlight plate was not confirmed according to the result of visual observation. Moreover, when viewed from the oblique direction, it was not recognized that the polypyramidic acid was derived from The diester film has uneven interference and is excellent in visual properties. <Example 2> 320832 31 200931083 Further, a thickness of "polyethylene terephthalate film is attached to one side of the polarizing film. The surface is applied with a corona, and the bonding agent is stretched and bonded.哎俊' Next, on the opposite side of the side of the polarizing film with the polyethylene terephthalate film extending, the optical compensation film (in-plane phase difference) of the thickness...m is formed by biaxially extending the ice-reducing resin. 63 coffee, thickness direction retardation value R' 225 nm), after corona treatment was applied to the bonding surface, and then joined by a 接合 接合 bonding agent to obtain a polarizing plate. Furthermore, the one-way extension polymerization, the ethylene glycol diacetate film and the optical fiber formed by the two-way extension of the borneol resin, the late phase of the film and the like, and the vertical axis of the deviation axis are matched to each other. . A layer of an optical compensation film surface formed by biaxially extending a norbornene resin on the back side polarizing plate is provided with a layer of a kicking agent (25 mm thick) containing an antistatic agent. The adhesive layer is used as an antistatic agent, and an ion conductive composition (N-hexyl + methyl ketone = decyl) is used as an antistatic agent. The polarizing plate obtained by adding an antistatic agent to the polarizing plate obtained by measuring the surface resistivity of the two agents when peeling off the separator on the surface of the adhesive is 6·%/□, and ν is shown. Antistatic energy. &lt;Example 3&gt; In addition to the formation of an adhesive layer containing an antistatic agent, the polarized light = stretched pair formed by an extended polyplate: an acid B: S: film / polarizing film 〆 optical compensation film The surface of the film of ethylene phthalate (4) is formed into a polarizing plate containing an antistatic fabric layer (thickness: 3 (four), and the same formula as in the first embodiment, 320832 32 200931083. The formation of the coating layer is used for the purpose of pentaerythritol tripropyl acetate. The dilute ester and the polyfunctional urethane acrylate (hexamethylene di ali, and the penta _ tri-acid _ reaction raw silk) are dissolved in a weight ratio of (9) / 4 〇, and 曰 is dissolved at a solid concentration of 60% An ultraviolet curable resin composition containing a leveling agent in an acetate, and a weight ratio of lrgacure 184 (manufactured by Ciba Specialty Chemicals Co., Ltd.) to the resin composition as a photopolymerization initiator In the form of 5 parts, the antimony pentoxide is added to the resin composition in an amount of 75 parts by weight to prepare a coating liquid. The coating film thickness after drying can be 3 em. Coating film coating, set to 6 generations After drying in a dryer for 3 minutes, the light from the high-pressure mercury lamp is irradiated with an intensity of 2 〇mW/coffee 2 from the side of the photocurable resin composition layer by an x-ray conversion light meter so as to be 20 〇mJ/cm 2 . The coating layer containing the antistatic agent was formed by curing the ultraviolet curable resin composition layer. The surface resistance value was measured in the same manner as in Example 2, and the pot was 〇ΐχΐ〇10 Ω/Π &gt; Antistatic energy β Μ <Example 4> An extended cellulose resin film having a thickness of 40/zm was prepared (1 [(: 4叩_1 (manufactured by Konica Minolta Optics Co., Ltd.), in-plane retardation value Rd: 45 nm, thickness direction) Phase difference Rth: 125 nm), and corona treatment is applied to it. In addition, a unidirectionally stretched polyethylene terephthalate film with a thickness of 37 em and a haze of 17% is prepared (the skew of the oriented spindle (for the extension axis) The maximum value of the dislocation angle) is 2 degrees, the in-plane phase difference value Rm is 3 g 〇〇 nm), and a corona treatment is applied to the joint surface thereof. 320832 33 200931083 On one side of the polarizing film obtained as described above, Photohardenable bonding agent to fit and join extended cellulose The corona-treated surface of the lipid film is bonded to the other side. The polarizing plate is prepared by bonding a galvanically treated surface of a unidirectionally stretched polyethylene terephthalate film. The polarizing plate is more common. The polarizing plate is lightweight. A layer of acrylate adhesive having a thickness of 25/ζη is disposed outside the extended cellulose resin film of the polarizing plate. The polarizing plate is disposed on the extended cellulose resin film on which the adhesive layer has been formed. On the back side of the liquid crystal panel on the outer side, a commercially available polarizing plate was placed on the front surface of the liquid crystal panel to assemble a liquid crystal panel, and this was combined with a commercially available light diffusing plate and a backlight to produce a liquid crystal display device. As a result of visually observing the display of the liquid crystal display device, unevenness due to contact with the backlight panel was not observed. <Comparative Example 1> The same procedure as in Example 1 was carried out except that the surface-saponified triethylenesulfonated cellulose film was used without using the unidirectionally extending polyethylene terephthalate film in Example 4. , made of polarizing plate. In the same manner as in the embodiment 10, after the adhesive layer was formed, the liquid crystal panel was assembled on the back surface of the liquid crystal panel to fabricate a liquid crystal display device, and the result of the display was observed, and the contact with the backlight was observed. Evenly. [Simple description of the diagram] None. [Main component symbol description] No 0 34 320832

Claims (1)

200931083 七、申請專利範圍： 1. 一種偏光板，其特徵為：具備有由聚乙烯醇樹脂所成偏 光膜、及於偏光膜的單側，經接合劑層而積層^延 對本一甲酸乙二g旨薄膜。 2. ^申=專利範圍第！項之偏光板’其中，於積層有延伸 聚對苯二甲酸乙二醋薄膜之側的相反面，再具有經積層 之防閃光層。 、、 〇 3.如申請專利範圍第1項或第2項之偏光板，其中，延伸 聚對苯二曱酸乙二酯薄膜的模糊度，係在3至40%的範 圍。 4. 如申請專利範圍第1項或第2項之偏光板，其中，於偏 光膜之積層有延伸聚對苯二曱酸乙二酯薄膜之側的相 反側’再具有經積層之保護膜或光學補償骐。 5. 如申請專利範圍第4項之偏光板，其中，該光學補償膜 係纖維素系樹脂薄膜。 ❹6.如申請專利範圍第4項之偏光板，其中，該光學補償膜 係降冰片烯系樹脂薄膜。 7·如申請專利範圍第1項或第2項之偏光板，其中，含有 抗靜電劑者。 8·如申請專利範圍第1項或第2項之偏光板，其中，於偏 光膜之積層有延伸聚對苯二甲酸乙二酯薄膜之一面的 相反側外面’再昇有膠黏劑層。 9. 一種液晶顯示裝置’其特徵為：具備有申請專利範圍第 8項之偏光板經膠黏劑層而貼合於液晶片之液晶面板者。 35 320832 200931083 、 四、指定代表圖：本案無圖式。 (一)本案指定代表圖為：第（ ）圖。 - (二)本代表圖之元件符號簡單說明： ❹ 五、本案若有化學式時，請揭示最能顯示發明特徵的化學式： 本案無化學式。 2 320832200931083 VII. Patent application scope: 1. A polarizing plate, which is characterized in that it has a polarizing film made of polyvinyl alcohol resin and a single side of the polarizing film, and is laminated on the bonding layer by a bonding agent layer. g is a film. 2. ^ Shen = patent scope! The polarizing plate of the item has a laminated anti-glare layer on the opposite side of the side on which the polyethylene terephthalate film is stretched. , 〇 3. For the polarizing plate of claim 1 or 2, the ambiguity of the extended polyethylene terephthalate film is in the range of 3 to 40%. 4. The polarizing plate of claim 1 or 2, wherein the opposite side of the side of the film of the polarizing film having the extended polyethylene terephthalate film has a laminated protective film or Optical compensation 骐. 5. The polarizing plate of claim 4, wherein the optical compensation film is a cellulose resin film. The polarizing plate of claim 4, wherein the optical compensation film is a norbornene-based resin film. 7. If you apply for a polarizing plate in item 1 or 2 of the patent scope, which contains an antistatic agent. 8. The polarizing plate of claim 1 or 2, wherein the outer side of the opposite side of the surface of the stretched polyethylene terephthalate film is laminated with an adhesive layer. A liquid crystal display device which is characterized in that it is provided with a liquid crystal panel in which a polarizing plate of the eighth application of the patent application is bonded to a liquid crystal panel via an adhesive layer. 35 320832 200931083 、 IV. Designated representative map: There is no schema in this case. (1) The representative representative of the case is: ( ). - (b) A brief description of the symbol of the representative figure: ❹ 5. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention: There is no chemical formula in this case. 2 320832
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US10054816B2 (en) 2009-11-12 2018-08-21 Toyo Boseki Kabushiki Kaisha Method for improving visibility of liquid crystal display device, and liquid crystal display device using same
US10175494B2 (en) 2011-05-18 2019-01-08 Toyobo Co., Ltd. Polarizing plate suitable for liquid crystal display device capable of displaying three-dimensional images, and liquid crystal display device
US10180597B2 (en) 2011-05-18 2019-01-15 Toyobo Co., Ltd. Liquid crystal display device, polarizing plate, and polarizer protection film

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US10054816B2 (en) 2009-11-12 2018-08-21 Toyo Boseki Kabushiki Kaisha Method for improving visibility of liquid crystal display device, and liquid crystal display device using same
US10948764B2 (en) 2009-11-12 2021-03-16 Keio University Method for improving visibility of liquid crystal display device, and liquid crystal display device using the same
TWI480639B (en) * 2010-06-22 2015-04-11 東洋紡績股份有限公司 Display device, polarizing plate and polarizer protection film for use in the display device comprising a white light source haveing a continuous emission spectrum
US9798189B2 (en) 2010-06-22 2017-10-24 Toyobo Co., Ltd. Liquid crystal display device, polarizer and protective film
US9897857B2 (en) 2010-06-22 2018-02-20 Toyobo Co., Ltd. Liquid crystal display device, polarizer and protective film
US10503016B2 (en) 2010-06-22 2019-12-10 Toyobo Co., Ltd. Liquid crystal display device, polarizer and protective film
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