TW201243405A - Apparatus for manufacturing polarization plate, method for manufacturing polarization plate, polarization plate, and liquid crystal display device using polarization plate - Google Patents

Apparatus for manufacturing polarization plate, method for manufacturing polarization plate, polarization plate, and liquid crystal display device using polarization plate Download PDF

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TW201243405A
TW201243405A TW101106220A TW101106220A TW201243405A TW 201243405 A TW201243405 A TW 201243405A TW 101106220 A TW101106220 A TW 101106220A TW 101106220 A TW101106220 A TW 101106220A TW 201243405 A TW201243405 A TW 201243405A
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laminated film
film
polarizing plate
protective film
polarizing element
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TW101106220A
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Chinese (zh)
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TWI554792B (en
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Atsushi KORI
Nobuchika TAKASHIMA
Hiroshi Nakashima
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Sanritz Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/18—Handling of layers or the laminate
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • 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
    • 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
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • 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
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/42—Polarizing, birefringent, filtering
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
    • B32B37/203—One or more of the layers being plastic
    • B32B37/206—Laminating a continuous layer between two continuous plastic layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying

Abstract

To uniformly adhere protection films on both the surfaces of a polarization element using an adhesive, and to prevent the protection films from peeling and generating wrinkles, even if the direction is converted at the time of guiding the polarization element to a subsequent adhesive drying or hardening step. A strip-like film of a polarization element is moved downward from above in the vertical direction, and a laminated film is formed by adhering first and second protection films at the same time to the polarization element from both the sides in the horizontal direction using an adhesive. Then, the moving direction of the laminated film is converted from the vertical direction to the horizontal direction by two or more steps, and the laminated film is dried or hardened.

Description

201243405 六、發明說明： 【發明所屬之技術領域】 本發明係關於偏光板之製造裝置、偏光板之製造方法 . 。此外，本發明係關於藉由該製造方法所得到的偏光板及 使用該偏光板之液晶顯示裝置。 【先前技術】 液晶顯示裝置，因爲薄型且耗電量低，因此以電視爲 首，做爲電腦、行動電話、汽車導航系統等地顯示裝置， 使用於廣泛的用途。這樣的液晶顯示裝置，主要由背光系 統與液晶面板所構成。液晶面板，進而以液晶胞、及於其 前面（視覺確認側之面）以及背面（背光系統側之面）分 別中介著黏接劑層而設的偏光板來構成。 使用於這樣的液晶顯示裝置的偏光板，係由具有偏光 性能的偏光元件、及分別中介著黏接劑層而設於偏光元件 的兩面的保護偏光元件的保護膜所.構成。偏光元件，一般 係由以碘染色而被單軸延伸的聚乙烯醇（以下亦稱爲PVA )系樹脂形成的。保護膜，例如以三醋酸纖維素（以下， 亦稱爲TAC)系樹脂形成的。 這樣的偏光板之製造’是以帶狀之長尺寸膜狀連續形 • 成的。於此連續的製造，使黏接偏光元件與保護膜的步驟 ，例如揭示於專利文獻1 (日本特開2 0 〇 8 - 9 0 2 7 1 )那樣， 由水平方向移動的帶狀常尺寸膜狀偏光元件的上下，分別 供給帶狀長尺寸膜狀的保護膜使其接近，在曼合這些之前 -5- 201243405 在偏光元件與保護膜之間塗布黏接劑，於偏光元件的上下 中介著黏接劑層重疊保護膜，藉由使通過夾送輥（pinch roll )而施加壓力，進行貼合。接著，藉由對被貼合的層 積膜進行乾燥處理使黏接劑層乾燥，而結束黏接步驟。隨 著黏接劑的種類不同，也可改變乾燥處理，而採用藉由施 以UV處理等活性能量前處理而使黏接劑層硬化的方法。 此外，貼合這樣的偏光元件與保護膜的步驟，如揭示 於專利文獻2(日本特開平1 1 - 1 79 8 7 1 )那樣，亦有使帶 狀長尺寸膜狀的偏光元件導引於垂直方向，亦即鉛直方向 由上往下的方向，而由其左右塗布黏接劑同時使保護膜接 近而貼合。藉由如此進行，與專利文獻1所示的把雙面的 保護膜在偏光元件的上下進行貼合的場合相比，黏接劑的 塗布在左右對偏光元件爲對稱地施予，所以保護膜的黏接 之均勻性可提高。 如此，把偏光元件導引於鉛直方向而由其左右貼合保 護膜的場合，鉛直方向的作業空間有限，所以保護膜貼合 之後，在次一隻使黏接劑層乾燥或者硬化的步驟，有必要 使貼合的層積膜由鉛直方向的移動轉向爲水平方向的移動 〇 使用圖面說明該例。圖6爲從前之偏光板的製造裝置 之一例。如圖6所示，已經以碘染色而被單軸延伸的PVA 系樹脂所構成的帶狀之長尺寸膜狀偏光元件111，藉由導 引輥155於鉛直方向由上往下之方向上被導引，朝向該圖 由左側使第1保護膜114接近，同時由右側使第2保護膜 -6 - 201243405 115接近，在貼合之前的偏光元件Ml與第1保護膜114 之間，偏光元件11 1與第2保護膜11 5之間，分別藉由第 1噴嘴151、第2噴嘴152塗布第1接著劑112a、第2接 著劑 113a，藉由一對夾送輥（pinch roll) 158a、158b’ 對偏光元件111左右同時貼合第1保護膜Π4、第2保護 膜U5。 被貼合的層積膜ll〇a，藉由1個導引輥161，使移動 方向由鉛直方向上往下的方向，變成朝向圖由右往左的方 向亦即水平方向，1次就被方向變換90度（直角）。其後 ，在乾燥真空室171之中使層積膜110a通過水平方向而 對層積膜11 〇a施以乾燥處理，對藉由第1接著劑112a、 第2接著劑11 3 a形成的第1接著劑層、第2接著劑層施 以乾燥處理，結束偏光元件111與第1、第2保護膜114 、Π5之接著步驟，藉此，得到層積膜11 0a之膜構成的偏 光板。又，在圖6省略層積膜11 〇a的膜構成之圖示。 作爲這樣之例’例如在專利文獻3 (日本特開2008-276136)，揭示了使偏光元件被導引於鉛直方項而由其左 右貼合保護膜後’使被貼合的層積膜，藉由1個導引輥轉 向90度，導引於水平方向，送至使接著劑硬化的步驟。 〔先前技術文獻〕 〔專利文獻〕 〔專利文獻1〕日本特開2008-9027 1號公報 〔專利文獻2〕日本特開平n_179871號公報 201243405 〔專利文獻3〕日本特開2008-276136號公報 【發明內容】 〔發明所欲解決之課題〕 如此，於偏光元件貼合保護膜後，在使接著劑層乾燥 或者硬化的步驟之前，使此層積膜以1個導引輥進行90 度方向轉換的話’本案發明人發現保護膜會由偏光元件剝 離，或者產生皺紋的現象。特別是進行方向變換而彎曲方 向的內側的保護膜，在圖6之例容易在第1保護膜114引 起剝離。特別是爲了提高生產效率而增大膜的搬送速度的 話，進而更容易引起此現象。本案發明人等推測這是因爲 在偏光元件貼合保護膜之後，尙未被施以接著劑層的乾燥 或硬化所以接著性並不充分，在這樣的狀態，以1個導引 輥1次就以90度（直角）這樣的急遽的角度彎曲層積膜 的緣故。 由在偏光元件貼合保護膜的步驟起，直到使接著劑層 乾燥或硬化的步驟爲止，所有過程都被導引於水平方向而 實施的話，就不會產生這樣的問題。但是，如專利文獻1 那樣，於偏光元件貼合保護膜的步驟，使偏光元件被導引 於水平方向，而由上下使保護膜接近的方法來施行的話， 會使接著劑的塗布因對偏光元件在上下藉由重力的影響而 無法對稱地均等實施，所以偏光元件的兩面之保護膜的接 著之均勻性會惡化。因此，在偏光元件貼合保護膜的步驟 ，最好是使偏光元件於鉛直方向由上往下導引，由左右貼 -8- 201243405 合保護膜。 然而，如此使偏光元件於鉛直方向上由上往下導引而 由左右貼合保護膜，使此貼合了的層積膜以1個導引輥方 向轉換90度而導引至下一站之接著劑層的乾燥或者硬化 步驟的話，如前所述保護膜容易由偏光元件剝離或者產生 皺紋，而使偏光板變成不良品。 本發明係爲了解決這樣的課題而完成之發明，課題在 於使偏光元件與保護膜之接著在鉛直方向上由上往下導引 而由左右貼合保護膜，即使爲了把此貼合的層積膜，導引 至次一站之接著劑層的乾燥或者硬化步驟，而變換方向爲 水平方向，也以保護膜不剝離或不產生皺紋的方式進行方 向變換。 〔供解決課題之手段〕 本發明之偏光板之製造裝置，其特徵爲至少具有：使 由聚乙烯醇系樹脂所構成的偏光元件的帶狀膜在鉛直方向 由上往下移動，藉由接著劑將由其左右分別供給的第1保 護膜及第2保護膜同時貼合於前述偏光元件的貼合部，及 使前述第1保護膜、前述偏光元件、及前述第2保護膜被 貼合後之層積膜之移動，由前述鉛直方向上往下的移動， 方向變換爲水平方向的移動之方向變換部，以及對前述層 積膜施以往前述水平方向的移動之方向變換後，對前述層 積膜之前述接著劑施以乾燥或硬化之乾燥部；前述方向變 換部設有複數導引輥，以藉由前述複數導引輥使前述層積 -9- 201243405 膜之方向變換分爲2階段以上來實施的方式構成。 此外，本發明之偏光板之製造方法，其特徵爲至少具 有：使由聚乙烯醇系樹脂所構成的偏光元件的帶狀膜在鉛 直方向由上往下移動而供給，由其左右分別供給第1保護 膜及第2保護膜，藉由接著劑將前述第1保護膜及前述第 2保護膜同時貼合於前述偏光元件的貼合步驟，及使前述 第1保護膜、前述偏光元件、及前述第2保護膜被貼合後 之層積膜之移動，由前述鉛直方向上往下的移動，方向變 換爲水平方向的移動之方向變換步驟，以及對前述層積膜 施以往前述水平方向的移動之方向變換後，對前述層積膜 之前述接著劑施以乾燥或硬化之乾燥步驟；前述方向變換 步驟，把前述層積膜之方向變換分爲2階段以上來實施。 此外，本發明之偏光板，係藉由前述製造方法製造的 偏光板。 此外，本發明之液晶顯示裝置，係使用前述偏光板之 液晶顯示裝置。 〔發明之效果〕 根據本發明，在偏光元件貼合保護膜時，爲了使偏光 元件於鉛直方向上由上往下導引，由左右貼合保護膜，在 左右重力的影響爲均等所以可均勻地貼合，即使爲了將此 貼合的層積膜，導引往接下來的接著劑的乾燥或硬化步驟 而變更方向爲水平方向，也因爲藉由複數之導引輥分爲2 階段以上進行方向變換，所以防止保護膜的剝離或者皺紋 -10- 201243405 發生，即使爲了提高生產效率而增大膜的搬送速度，也可 以安定而製造偏光板。 【實施方式】 以下，使用圖面說明本發明之實施型態。圖1係藉由 本發明的偏光板之製造裝置、偏光板之製造方法製造的偏 光板之例之剖面圖。偏光板1 0，係由具有偏光性能的偏光 元件11、於偏光元件11之各面，分別中介著第1接著劑 層12、第2接著劑層13而設的保護偏光元件11的各面之 第1保護膜14、第2保護膜15所構成的。偏光元件11， 係以碘染色而被單軸延伸的PVA系樹脂形成的。第1、第 2保護膜14、15係以TAC系樹脂形成的。此外，供形成 第1接著劑層12、第2接著劑層13之用的第1接著劑' 第2接著劑使用PVA系接著劑。偏光元件1 1的膜厚，例 如爲10//m〜40/zm，第1、第2保護膜14、15的膜厚例 如分別爲20/Z m〜120/z m。 圖2係本發明的偏光板之製造裝置之一例之剖面槪略 圖。圖2係偏光板的製造裝置之一部分，係由供把偏光元 件1 1與第1保護膜14、第2保護膜15藉由第1接著劑 12a、第2接著劑13a貼合的步驟之用的貼合部50，與使 用於使在貼合部50被形成於偏光元件11與第1保護膜14 、第2保護膜1 5之間的第1接著劑層1 2、第2接著劑層 13乾燥的步驟之乾燥部70,以及設於貼合部50與乾燥部 70之間，導引偏光元件11與第1、第2保護膜14、15被 -11 - 201243405 貼合的偏光板10的構成之層積膜l〇a而變換層積膜l〇a 的移動方向的方向變換部60所構成的。此外，在以下的 說明，右、右側、左、左側，是面朝向圖之右、右側、左 、左側。 貼合偏光元件1 1、與第1、第2保護膜14、1 5之貼 合部50，如圖2所示，係由使偏光元件11於鉛直方向由 上往下供給的方式進行導引的第1導引輥55、及由偏光元 件1 1的左側供給第1保護膜14，由右側供給第2保護膜 15,以接近於偏光元件11的方式進行導引的第2導引輥 56、第3導引輥57，以及設於偏光元件11與左右之接近 的第1保護膜14、第2保護膜15之各個之間，供給第1 接著劑12a、第2接著劑13a的第1噴嘴51、第2噴嘴52 、以及使被塗布第1接著劑12a、第2接著劑13a的偏光 元件11與第1、第2保護膜14、15由左右施加壓力同時 貼合之1對夾送輥（pinch roll) 58a、58b所構成。第1、 第2噴嘴51、52，對由上往下導引的偏光元件11設於左 右分別對稱的位置，在偏光元件1 1與分別對其左右供給 的第1、第2保護膜14、15之間被塗布第1、第2接著劑 12a、13a的方式，使噴出口幾乎在鉛直方向朝向下地被配 置。進而，於貼合部50，在1對夾送輥（pinch roll) 58a 、5 8b與方向變換部60之間，最好設有預備乾燥裝置59 。預備乾燥裝置5 9，在圖2僅槪略顯示，例如例示根據溫 熱加熱器、遠紅外線加熱器、或者根據高溫空氣的送風之 乾燥裝置。 -12- 201243405 被供給至貼合部50的偏光元件1 1，由帶狀的PVA系 樹脂之膜所構成，在此貼合的前步驟，以碘等二色性染料 染色而被單軸延伸。此被延伸的PVA系樹脂膜的膜厚例 如爲ΙΟ/im〜40/zm，其寬度例如爲500mm〜2000mm。針 對此前步驟可以使用既知的裝置、製法來製作，雖省略圖 示或詳細的說明，但以下簡單說明該例。 由被捲爲卷狀的帶狀長尺寸的PVA系樹脂膜源拉出 PVA系樹脂膜，在純水中使其膨潤。接著，浸漬於碘的碘 化鉀水溶液中，使PVA系樹脂膜以碘染色。接著，把以 碘染色的PVA系樹脂膜浸漬於含有硼酸的水溶液施以架 橋處理。接著，把此PVA系樹脂膜以特定的倍率進行單 軸延伸。延伸倍率例如爲4倍〜7倍。延伸可以分爲2階 段以上來進行，亦可在染色前或與染色同時施行，亦可在 架橋處理步驟來實施。此時，架橋處理可以與染色同時進 行或者在染色後施行。此後使PVA系樹脂膜乾燥，得到 具有偏光性能的偏光元件11，被供給至貼合部50。 被供給至貼合部50的帶狀之長尺寸膜狀的偏光元件 11’藉由第1導引輥55’於鉛直方向被朝下導引。偏光元 件Π的移動速度，例如爲i〇m/分〜50m/分。由其左右 供給的第1、第2保護膜14、1 5，均係由TAC系樹脂所 構成，分別’作爲帶狀長尺寸膜來供給，其寬幅均對應於 偏光元件11的寬幅，其膜厚例如爲20# m〜120y m，此 外’其移動速度也配合偏光元件11的移動速度。分別的 TAC系樹脂之與PVA系樹脂之接著面，爲了提高接著性 £ -13- 201243405 ，而施以鹼化處理或電暈放電處理亦可。 在以貼合部50貼合偏光元件11與其左右的第1、第 2保護膜14、15的步驟，對於鉛直方向由上移動往下方向 的偏光元件11，由左斜上方有第1保護膜14，由右斜上 方有第2保護膜15,分別徐徐對稱地接近偏光元件11而 被移動、供給。接著，於該貼合之前，在偏光元件11與 第1保護膜14之間，偏光元件1 1與第2保護膜1 5之間 ，分別由第1、第2噴嘴51、52，供給、塗布第1、第2 接著劑12a、13a。第1、第2劑之接著劑12a、13a，由第 1、第2噴嘴51、52於鉛直方向幾乎朝向下方滴下，在偏 光元件11的表面，或者第1、第2保護膜14、15之分別 的表面，或者在接近而接觸的時間點之偏光元件11與第1 、第2保護膜14、15之分別之間被塗布。第1、第2接著 劑1 2a、1 3a的塗布，係在偏光元件1 1與左側的第1保護 膜14、偏光元件11與右側的第2保護膜15實質上對偏光 元件Π爲左右對稱地被施行，所以塗布之在左右之均勻 性爲良好。 第1、第2接著劑12a、13a，均使用PVA系樹脂之接 著劑。PVA系樹脂親水性高，所以溶媒主要使用水。總之 ，PV A系樹脂之水溶液所構成的接著劑，由第1、第2噴 嘴51、52滴下。藉由此第1、第2接著劑12a、13a，在 偏光元件1 1與第1保護膜1 4、第.2保護膜1 5之分別之間 ，被形成第1接著劑層12、第2接著劑層13。總之，藉 由此貼合步驟，被形成偏光元件Π，與分別在其各面中介 -14- 201243405 著第1接著劑層12'第2接著劑層13,使第1保護膜14 、第2保護膜15被貼合之偏光板1〇的膜構成之層積膜 10a。又，在圖2省略層積膜10a的膜構成之圖示。在貼 合步驟’以包含根據預備乾燥裝置59之預備乾燥步驟爲 佳。預備乾燥步驟，藉由一對之夾送輥（pinch roll ) 58a 、5 8b在層積膜l〇a被形成後，被施以根據方向變換部60 之方向變換之前，使第1接著劑層12、第2接著劑層13 之乾燥的一部分，先於乾燥部70的乾燥步驟，而預備性 地實施。預備乾燥步驟，係在預備乾燥裝置59內使層積 膜l〇a通過鉛直方向而實施者，作爲其乾燥方式，例示有 溫熱乾燥方式，根據遠紅外線之乾燥方式，或者根據高溫 空氣之乾燥方式。 在此貼合步驟後，使此層積膜l〇a中的第1接著劑層 12、第2接著劑層13乾燥而使溶媒揮發。其係在乾燥步 驟，藉由圖2的乾燥部70來實施的。在圖2僅有槪略顯 示，乾燥部70，係由供使第1接著劑層12、第2接著劑 層1 3中的溶媒氣化而使乾燥之用的乾燥室71所構成，例 如，於乾燥室之內部，雖在圖示予以省略，被配置著溫熱 加熱器、遠紅外線加熱器，或者送風出高溫的空氣之乾燥 裝置，以層積膜l〇a，於乾燥室71內於水平方向通過的方 式被構成的。作爲乾燥方式，例示有溫熱乾燥方式、根據 遠紅外線之乾燥方式，或者根據高溫空氣之乾燥方式。藉 由此乾燥部7〇，根據PVA系樹脂之第1接著劑層12、第 2接著劑層1 3中的溶媒之水分揮發而被除去被乾燥，完成 -15- 201243405 接著。亦即，藉由前述貼合步驟與此乾燥步驟，達成偏光 元件11與第1、第2保護膜14、15之接著步驟，得到偏 光板10之層積膜l〇a。此後，雖然省略圖示，但帶狀的層 積膜l〇a作爲偏光板10被切斷爲特定的形狀。又，在圖2 例示著在乾燥室71內層積膜10a移動於水平方向的場合 ，爲了提高乾燥效率，在乾燥室71內進行上下或斜向上 下等反覆移動等，使移動方向改變亦可。 如前所述，貼合部50，以使往偏光元件1 1的兩面之 第1、第2接著劑12a、13a的塗布被均勻地進行的方式， 使偏光元件11於鉛直方向由上往下移動爲較佳。此外， 藉由如此進行，可以節省偏光板製造裝置的水平方向的設 置面積。然而，可以在鉛直方向上設置的距離也有限制， 所以在下一站之乾燥部70，層積膜10a被移動於水平方向 。在乾燥部70，最好是防止根據重力導致溶媒成分之液的 不均勻.，此外，爲了防止皺紋等外觀不良的發生，以水平 方向的移動爲較佳。此外，通常在建築物的高度上也有限 制，所以在乾燥部70，層積膜1 0a以被移動於水平方向爲 佳。 因此，在貼合步驟之後，乾燥步驟之前，有必要藉由 方向變換部60，使層積膜10a的移動方向由鉛直方向改變 方向爲水平方向。將此作爲方向變換步驟。在根據本發明 的偏光板之製造裝置之方向變換部60,供使層積膜l〇a的 方向改變之用的方向變換導引輥至少被配置2根。 在圖2的方向變換部60，顯示本發明的方向變換導引 -16- 201243405 輥的配置之一例。在圖2，顯示乾燥部70，被配置於貼合 部50的左側的場合，所以本發明之方向變換部60，是以 在面對層積膜l〇a時被方向變換往左側之例來進行說明， 但朝向乾燥部70被配置於右側，朝向層積膜10a被方向 變換往右側的場合，也可以藉由左右對稱地進行解釋，而 以完全相同的方式來說明。 在圖2，顯示於方向變換部60配置2根方向變換導引 輥之例。稱此爲第1方向變換導引輥61、第2方向變換導 引輥62。第1方向變換導引輥61，沿著貼合部50的下方 ，層積膜l〇a的鉛直方向之移動方向配置於左面。第2方 向變換導引輥62，被配置於第1方向變換導引輥61的斜 向左側下方，被方向變換爲水平方向的層積膜l〇a的上面 。層積膜l〇a，藉由此2個方向變換導引輥，依序被方向 變換而被導引，但整體是由鉛直方向到水平方向，總之是 實質上被方向變換90度。但是，因爲這樣分爲2階段進 行方向變換，所以藉著分別的方向變換導引輥之層積膜 10a的彎曲角度可以是比90度（直角）更大的角度，總之 可以緩和在1個方向變換導引輥上之層積膜l〇a的彎曲程 度》因此，可以防止如從前技術那樣使層積膜1次就彎曲 90度時所發生的保護膜由偏光元件之剝離。此處，所謂彎 曲角度，是通過該當的方向變換導引輥之前的層積膜l〇a 的移動方向的直線，與通過後之層積膜l〇a的移動方向的 直線所夾的方向變換導引輥側之角度。 此處，第1方向變換導引輥61、第2方向變換導引輥 -17- 201243405 62，可以使用通常的導引輥，表面材質可以是樹脂製亦可 爲金屬製。其剖面爲圓形，直徑例如爲100mm〜450mm， 較佳者爲200mm〜300mm，其寬幅比層積膜10a的寬幅還 要大。此外，第1方向變換導引輥61、第2方向變換導引 輥62，以具有旋轉驅動機構者爲佳，此外以具有溫度控制 機構者爲佳。例如，第1方向變換導引輥61、第2方向變 換導引輥62的溫度，分別被控制在較佳的35°C〜45°C的 範圍之任一溫度，進而更佳者爲被控制在40 °C。第1方向 變換導引輥61、第2方向變換導引輥62，亦可使用相同 直徑、材質、機構之輥，亦可使用不同直徑、材質、機構 之輥。 本案發明人等進而硏究此2個方向變換導引輥之更佳 的配置。以圖3來說明此情況。圖3係僅選擇顯示圖2的 方向變換部60之圖式。本案發明人等，爲了防止保護膜 的剝離，發現第1方向變換導引輥61所彎曲的角度0特 別重要。爲了使該較佳的範圍更容易理解，而以彎曲角度 0的補角0’（ 0 + 0，=18(Γ)來表示。亦即，0，是表示 藉由第1方向變換導引輥61使層積膜10a被方向變換之 由鉛直方向起算的角度。運用第1方向變換導引輥61而 不使發生保護膜的剝離，必須使0 ’盡可能地接近於0°， 但是在該場合，在第2方向變換導引輥62之彎曲角度會 變得急劇而在該處發生保護膜的剝離。有鑑於這樣的因素 本案發明人等硏究調查的結果，發現不產生保護膜的剝離 的0 ’爲35° < 0 ’ < 70。，更佳者爲4(Γ < 0 ’ < 65° »例如在 -18- 201243405 0’=3(Γ時發生剝離，在0’=45°、0’=6(Γ時沒有剝離或 者皴紋發生。此外，第1方向變換導引輥61、第2方向變 換導引輥62之中心間的距離，以鉛直方向來表示的話， 以250mm〜1000mm的範圍爲佳，更佳者爲300mm〜500mm 〇 在前述實施型態，說明了在方向變換部60配置2根 方向變換導引輥的場合，但是在本發明，亦可配置3根以 上的方向變換導引輥。於前述圖3之例，進而加上第3方 向變換導引輥63而配置3根方向變換導引輥之方向變換 部60之一例顯示於圖4。圖4係僅選擇顯示圖2的方向變 換部60之圖示的其他例。與圖3之例同樣，第1方向變 換導引輥61沿著層積膜10a的鉛直方向之移動方向被配 置於左面，第2方向變換導引輥62被配置於第1方向變 換導引輥61的斜向左側下方，被方向變換爲水平方向的 層積膜l〇a的上面。接著，第3方向變換導引輥63，被配 置於第1方向變換導引輥61與第2方向變換導引輥62之 間。3個方向變換導引輥之分別的彎曲角度都比90度還要 大，比180度還要小。藉由第2方向變換導引輥62，使層 積膜l〇a的移動方向被變換爲水平方向。如此，藉由配置 3根方向變換導引輥，與圖3之配置2根方向變換導引輥 的場合相比，可以進而緩和分別之方向變換導引輥所彎曲 的層積膜1 〇a的彎曲程度，可以進而防止保護膜的剝離。 在本發明，亦可在方向變換部60進而配置4根以上 的方向變換導引輥。即使如此配置3根以上的場合’也同 -19- 201243405 樣以最初的方向變換導引輥亦即第1方向變換導引輥6 1 所彎曲的層積膜l〇a的彎曲角0爲重要，與前述同樣，以 彎曲角度0的補角0’（θ+0’=18〇°)來表示的話，較佳 者爲爲35。<0’<7〇°，更佳者爲4〇°<0，<65。。配置3 根以上方向變換導引輥的場合，也是任一方向變換導引輥 都可以使用與前述之第1、第2導引輥61、62相同的輥》 分別的導引輥的直徑、材質、機構可以是相同的，也可以 使其不同。又，在圖3、圖4省略層積膜i〇a的膜構成之 圖示。 稍早說明了第1保護膜14、第2保護膜15爲TAC樹 脂的場合，但本發明並不以此爲限，第1保護膜14、第2 保護膜15之一方或者雙方除了 TAC系樹脂以外，亦可使 用降冰片烯等環烯烴系樹脂、聚對苯二甲酸乙二酯（PET )系樹脂、丙烯酸系樹脂，亦可使用這些的層積膜。此外 ’第1保護膜14、第2保護膜15，亦可使用相同材質者 ，亦可使用不同材質者。此外，第1、第2保護膜14、15 之一方或者雙方亦可爲相位差膜。此外，第1、第2保護 膜14' 15之一方或者雙方，可以爲了防眩性、防反射機 能或緩和光學不均而於其表面設置AG(防眩，antigiare )層’亦可施以AG處理，此外於膜的內部具有霧度亦可 。此外’第1、第2保護膜14、15之一方或者雙方亦可被 施以防帶電處理。 此外，第1接著劑12a、第2接著劑1 3a，係針對親 水性PVA系樹脂的場合來說明，但並不以此爲限，因應 -20- 201243405 於第1保護膜14與第2保護膜15的材質可以爲任意材質 ，例如可以使用丙烯酸系接著劑，胺甲酸乙酯系接著劑等 ，可以因應分別的接著劑而是用有機溶媒等適切的溶媒。 此外，第1接著劑12a、第2接著劑13a可以使用相同者 ，亦可使用不同者。 進而，作爲第1接著劑12a、第2接著劑13a，可以 使用紫外線等活性能量線硬化型的接著劑。在此場合，雖 於圖示省略，但在圖2之偏光板的製造裝置，除了乾燥部 70的乾燥室7 1以外，配置藉由紫外線等活性能量線使接 著劑硬化的活性能量線硬化裝置，替代乾燥處理而對接著 劑施以硬化處理。亦即，乾燥部70亦可以使接著劑硬化 的硬化裝置來構成，此外，接著劑的乾燥步驟，可以是使 接著劑硬化的步驟。作爲活性能量線硬化行之接著劑之例 ，可以舉出紫外線（UV )硬化型環氧系接著劑，作爲活 性能量線硬化裝置之例，可以舉出紫外線硬化裝置。紫外 線（UV)硬化型接著劑接著進行地很快，原本在方向變 換導致保護膜的剝離就不容易發生，但藉由適用本發明可 以更爲抑制保護膜的剝離的發生。又，如此般使用活性能 量線硬化型的接著劑的場合，預備乾燥裝置5 9可以省略 其次，說明使用了本發明的偏光板製造裝置、偏光板 之製造方法製造的本發明之偏光板1 0之本發明的液晶顯 示裝置。圖5係顯示構成本發明的液晶顯示裝置之液晶面 板20。液晶顯示裝置，除此以外，係由被配置於液晶面板 -21 - 201243405 20的背面側的背光系統所構成，但因採用公知的構成，所 以省略圖示及說明。 液晶面板20，係以液晶胞2 1、於液晶胞2 1的前面側 (視覺確認側、亦即背光系統的相反側）之面上中介著第 1黏著劑層22f而貼合的第1偏光板10f，在液晶胞21的 背面側（亦即背光系統側）之面上中介著第2黏著劑層 2 2r而貼合的第2偏光板10r所構成。 第1偏光板l〇f、第2偏光板1 Or，其偏光軸被配置爲 正交尼科爾。液晶胞21可以是TN型、STN型、VA型、 IPS型之任一種，可以使用公知的液晶胞，省略其說明及 內部構造的圖示。在本發明之液晶顯示裝置之液晶面板20 ，只要在第1偏光板1 Of、第2偏光板1 Or之任一方或雙 方，使用根據本發明的偏光板1〇即可。又，在圖5,省略 第1偏光板l〇f、第2偏光板10r的膜構成。針對構成第1 黏著劑層22f、第2黏著劑層22r (以下不區別第1黏著劑 層22f、第2黏著劑層22r，而以黏著劑層來說明）之分別 的黏著劑，也可以使用公知的黏著劑。例如，可以舉出丙 烯酸系黏著劑、胺甲酸乙酯系黏著劑、聚矽氧系黏著劑等 。此外，亦可使用具有遮蔽紫外線（UV cut )機能的黏著 劑。 黏著劑層，在製造上一般多由偏光板製造商預先形成 。總之，結束偏光元件1 1與第1、第2保護膜14、15之 接著而得到偏光板1〇之膜構成的帶狀長尺寸的層積膜10a 後，進行切斷之前，藉由對此層積膜l〇a的應該貼合於液 -22- 201243405 晶胞21的面上塗布黏著劑層而形成，於黏著劑層的表面 貼合剝離膜（未圖示），其後，因應於應該被貼合的液晶 胞21的形狀，也配合切斷黏著劑層與剝離膜，得到在偏 光板10的一方之面形成黏著劑層與剝離膜的薄片狀偏光 板製品。將此收容於液晶面板生產線，於該處實施藉由被 形成於偏光板10的表面上的黏著劑層之偏光板10與液晶 胞21之貼合。此處，剝離膜是爲了保護黏著劑層的表面 而設置的，在貼合偏光板10於液晶胞21之前才被剝離除 去。此外，在應被貼合於帶狀長尺寸之層積膜10a之液晶 胞21的面上形成黏著劑層與剝離膜時，不完全切斷，例 如僅在剝離膜及黏著劑層的部分因應於應該貼合的液晶胞 21的形狀形成切斷面（半切），而作爲在帶狀的長尺寸膜 的狀態做成卷狀的偏光板製品供給至生產線，於該處在貼 合於液晶胞21之前才由卷拉出除去剝離膜，因應於液晶 胞21的形狀而完全切斷進行貼合亦可。 以上，說明了本發明之實施型態，但本發明並不以此 爲限，在不逸脫本發明之趣旨的範圍可以進行變更。 【圖式簡單說明】 圖1係藉由本發明的製造方法製造的偏光板之一例之 剖面圖。 圖2係本發明的偏光板之製造裝置之一例之剖面圖。 圖3係本發明的偏光板之製造裝置的方向變換部之一 例之剖面圖。 -23- 201243405 圖4係本發明的偏光板之製造裝置的方向變換部之其 他例之剖面圖。 圖5係使用本發明的偏光板之液晶顯示裝置之一例之 剖面圖。 圖6係從前之偏光板之製造裝置之一例之剖面圖。 【主要元件符號說明】 I 〇 :偏光板 l〇a :層積膜 i〇f :第1偏光板 l〇r :第2偏光板 II :偏光元件 12 :第1接著劑層 12a :第1接著劑 1 3 :第2接著劑層 1 3 a :第2接著劑 14 :第1保護膜 15 :第2保護膜 2〇 :液晶面板 21 :液晶胞（cell ) 22f :第1黏著劑層 22r :第2黏著劑層 5〇 :貼合部 5 1 :第1噴嘴 -24- 201243405 5 2 :第2噴嘴 55 :第1導引輥 56 :第2導引輥 57 :第3導引輥 58a:夾送輕（pinch roll) 58b:夾送輥（pinch roll) 59 :預備乾燥裝置 60 :方向變換部 61:第1方向變換導引輥 62 :第2方向變換導引輥 63 :第3方向變換導引輥 7 0 :乾燥部 7 1 :乾燥室 1 l〇a :層積膜 1 1 1 :偏光元件 1 1 2 a :第1接著劑 1 1 3 a :第2接著劑 1 14 :第1保護膜 1 1 5 :第2保護膜 1 5 1 :第1噴嘴 1 5 2 :第2噴嘴 155 :導引輥 158a:夾送輥（pinch roll) 158b :夾送輕（pinch roll) -25 201243405 161 :導引輥 171 :乾燥室 -26201243405 VI. Description of the Invention: [Technical Field] The present invention relates to a manufacturing apparatus of a polarizing plate and a method of manufacturing a polarizing plate. Further, the present invention relates to a polarizing plate obtained by the manufacturing method and a liquid crystal display device using the polarizing plate. [Prior Art] Since the liquid crystal display device is thin and has low power consumption, it is used as a display device such as a computer, a mobile phone, or a car navigation system, and is used for a wide range of applications. Such a liquid crystal display device is mainly composed of a backlight system and a liquid crystal panel. The liquid crystal panel is further constituted by a liquid crystal cell, and a polarizing plate provided with an adhesive layer interposed therebetween on the front surface (the surface on the visual confirmation side) and the back surface (the surface on the backlight system side). The polarizing plate used in such a liquid crystal display device is composed of a polarizing element having a polarizing property and a protective film which protects the polarizing element which is provided on both surfaces of the polarizing element via an adhesive layer. The polarizing element is generally formed of a polyvinyl alcohol (hereinafter also referred to as PVA) resin which is uniaxially stretched by iodine dyeing. The protective film is formed, for example, of a cellulose triacetate (hereinafter, also referred to as TAC) resin. The manufacture of such a polarizing plate is formed in a continuous shape of a strip-shaped long film. In the continuous manufacturing process, the step of bonding the polarizing element and the protective film is disclosed, for example, in the tape-shaped normal-sized film which is moved in the horizontal direction as disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 20-108). The upper and lower sides of the polarizing element are respectively supplied with a strip-shaped long film-shaped protective film to be brought close to each other. Before the combination of these, the adhesive is applied between the polarizing element and the protective film, and the upper and lower sides of the polarizing element are interposed. The adhesive layer overlaps the protective film, and pressure is applied by a pinch roll to bond. Next, the adhesive layer is dried by drying the bonded laminated film to complete the bonding step. The drying treatment may be changed depending on the type of the adhesive, and a method of hardening the adhesive layer by applying an active energy pretreatment such as UV treatment may be employed. In addition, as for the step of bonding such a polarizing element and a protective film, as disclosed in Patent Document 2 (Japanese Patent Laid-Open Publication No. Hei No. Hei No. Hei No. Hei No. Hei. The vertical direction, that is, the direction from the top to the bottom in the vertical direction, is applied by applying the adhesive to the left and right while bringing the protective film close to each other. In the case where the double-sided protective film is bonded to the upper and lower sides of the polarizing element as shown in Patent Document 1, the application of the adhesive is symmetrically applied to the polarizing element on the right and left sides, so that the protective film is provided. The uniformity of the bonding can be improved. When the polarizing element is guided in the vertical direction and the protective film is bonded to the left and right, the working space in the vertical direction is limited, so that the adhesive layer is dried or hardened one time after the protective film is bonded. It is necessary to shift the laminated film to be horizontally moved in the vertical direction. This example will be described using a drawing. Fig. 6 is an example of a manufacturing apparatus of a polarizing plate of the prior art. As shown in Fig. 6, a strip-shaped long-length film-shaped polarizing element 111 composed of a PVA-based resin which has been uniaxially stretched by iodine dyeing is guided by the guide roller 155 in the vertical direction from the top to the bottom. In the figure, the first protective film 114 is brought close to the left side, and the second protective film -6 - 201243405 115 is brought close to the right side, and between the polarizing element M1 and the first protective film 114 before bonding, the polarizing element 11 Between 1 and the second protective film 11 5, the first adhesive 112a and the second adhesive 113a are applied by the first nozzle 151 and the second nozzle 152, respectively, and a pair of pinch rolls 158a and 158b are used. The first protective film Π4 and the second protective film U5 are bonded to the left and right sides of the polarizing element 111 at the same time. The laminated film 11a is bonded, and the direction of the movement direction is downward from the vertical direction by the one guide roller 161, and becomes the horizontal direction toward the right to the left, that is, the horizontal direction. The direction is changed by 90 degrees (right angle). Then, the laminated film 110a is dried in the horizontal direction by the laminated film 110a in the horizontal direction, and the first film 112a and the second adhesive 11 3a are formed. (1) The adhesive layer and the second adhesive layer are subjected to a drying process, and the subsequent steps of the polarizing element 111 and the first and second protective films 114 and Π5 are completed, whereby a polarizing plate having a film of the laminated film 110a is obtained. In addition, the film structure of the laminated film 11 〇a is abbreviate|omitted by FIG. In the case of the above-mentioned example, a laminated film in which the polarizing element is guided to the vertical direction and the protective film is bonded to the left and right is attached, and the laminated film is bonded, for example, in Japanese Patent Laid-Open No. 2008-276136, It is turned to 90 degrees by a guide roller, and guided to the horizontal direction, and sent to the step of hardening the adhesive. [PRIOR ART DOCUMENT] [Patent Document 1] [Patent Document 1] JP-A-2008-9027 (Patent Document 2) Japanese Laid-Open Patent Publication No. H07-179871 (Patent Document 3) JP-A-2008-276136 [Problems to be Solved by the Invention] After the protective film is bonded to the polarizing element, the laminated film is converted into a 90-degree direction by one guide roller before the step of drying or hardening the adhesive layer. The inventors of the present invention found that the protective film was peeled off by the polarizing element or wrinkles were generated. In particular, the protective film on the inner side in the direction in which the direction is changed in the direction of the drawing is easily peeled off in the first protective film 114 in the example of Fig. 6 . In particular, in order to increase the production efficiency and increase the transport speed of the film, this phenomenon is more likely to occur. The inventors of the present invention presume that this is because after the protective film is bonded to the polarizing element, the adhesive layer is not dried or hardened by the adhesive layer, so that the adhesiveness is not sufficient. In such a state, one guide roller is used once. The laminated film is bent at an acute angle of 90 degrees (right angle). Such a problem does not occur from the step of bonding the protective film to the polarizing element until all the processes are carried out in the horizontal direction until the step of drying or hardening the adhesive layer. However, as disclosed in Patent Document 1, the step of bonding the protective film to the polarizing element causes the polarizing element to be guided in the horizontal direction, and the coating is applied by the method of bringing the protective film up and down. Since the elements are not symmetrically uniformly performed by the influence of gravity on the upper and lower sides, the uniformity of the adhesion of the protective films on both sides of the polarizing element is deteriorated. Therefore, in the step of bonding the protective film to the polarizing element, it is preferable to guide the polarizing element from the top to the bottom in the vertical direction, and to protect the film by the left and right -8-201243405. However, the polarizing element is guided from the top to the bottom in the vertical direction, and the protective film is bonded to the right and left, so that the laminated film is converted to 90 degrees by one guide roller direction and guided to the next station. In the case of the drying or hardening step of the adhesive layer, as described above, the protective film is easily peeled off by the polarizing element or wrinkles are formed, and the polarizing plate becomes a defective product. The present invention has been made to solve such a problem, and it is an object of the present invention to provide a polarizing element and a protective film which are guided from the top to the bottom in the vertical direction to bond the protective film to the left and right, even if the laminated film is laminated. The film is guided to the drying or hardening step of the adhesive layer of the next station, and the direction of the transformation is horizontal, and the direction change is also performed in such a manner that the protective film does not peel off or wrinkles. [Means for Solving the Problem] The apparatus for manufacturing a polarizing plate of the present invention is characterized in that at least a strip-shaped film of a polarizing element made of a polyvinyl alcohol-based resin is moved from the top to the bottom in the vertical direction, and The first protective film and the second protective film which are respectively supplied to the right and left sides are bonded to the bonding portion of the polarizing element, and the first protective film, the polarizing element, and the second protective film are bonded together. The movement of the laminated film is changed from the vertical direction downward, the direction is changed to the horizontal direction direction shifting portion, and the laminated film is changed in the horizontal direction. The above-mentioned adhesive agent of the film is applied with a drying portion which is dried or hardened; the direction changing portion is provided with a plurality of guide rolls for dividing the direction of the laminated -9-201243405 film into two stages by the plurality of guide rolls. The above configuration is implemented. Further, the method for producing a polarizing plate of the present invention is characterized in that at least a strip-shaped film of a polarizing element made of a polyvinyl alcohol-based resin is moved from the top to the bottom in the vertical direction, and is supplied to the left and right sides. a protective film and a second protective film, wherein the first protective film and the second protective film are simultaneously bonded to the polarizing element by an adhesive, and the first protective film, the polarizing element, and The movement of the laminated film after the bonding of the second protective film is shifted in the vertical direction, the direction is changed to the direction of the horizontal direction, and the laminated film is applied to the horizontal direction. After the direction of movement is changed, the above-mentioned adhesive agent of the laminated film is subjected to a drying step of drying or hardening, and the direction changing step is carried out by dividing the direction of the laminated film into two or more stages. Further, the polarizing plate of the present invention is a polarizing plate manufactured by the aforementioned manufacturing method. Further, the liquid crystal display device of the present invention is a liquid crystal display device using the above polarizing plate. [Effects of the Invention] According to the present invention, when the polarizing element is bonded to the protective film, the polarizing element is guided from the top to the bottom in the vertical direction, and the protective film is bonded to the right and left, so that the influence of gravity on the right and left is uniform, so that the polarizing element can be uniform. Even if the laminated film for bonding is guided to the drying or hardening step of the next adhesive and the direction is changed to the horizontal direction, it is divided into two or more stages by a plurality of guide rolls. Since the direction is changed, the peeling of the protective film or the wrinkles -10- 201243405 is prevented, and even if the film transport speed is increased in order to increase the production efficiency, the polarizing plate can be manufactured with stability. [Embodiment] Hereinafter, embodiments of the present invention will be described using the drawings. Fig. 1 is a cross-sectional view showing an example of a polarizing plate manufactured by the apparatus for manufacturing a polarizing plate and the method for producing a polarizing plate of the present invention. The polarizing plate 10 is made of a polarizing element 11 having polarizing performance, and each surface of the protective polarizing element 11 provided on the respective surfaces of the polarizing element 11 via the first adhesive layer 12 and the second adhesive layer 13 The first protective film 14 and the second protective film 15 are formed. The polarizing element 11 is formed of a PVA-based resin which is uniaxially stretched by iodine dyeing. The first and second protective films 14 and 15 are formed of a TAC resin. Further, a PVA-based adhesive is used as the first adhesive agent for forming the first adhesive layer 12 and the second adhesive layer 13 as the second adhesive. The film thickness of the polarizing element 1 1 is, for example, 10/m to 40/zm, and the film thicknesses of the first and second protective films 14 and 15 are, for example, 20/Z m to 120/z m, respectively. Fig. 2 is a schematic cross-sectional view showing an example of a manufacturing apparatus of a polarizing plate of the present invention. FIG. 2 is a part of the apparatus for manufacturing a polarizing plate, and is used for the step of bonding the polarizing element 11 to the first protective film 14 and the second protective film 15 by the first adhesive 12a and the second adhesive 13a. The bonding portion 50 and the first adhesive layer 1 2 and the second adhesive layer used to form the bonding portion 50 between the polarizing element 11 and the first protective film 14 and the second protective film 15 The drying unit 70 in the step of drying 13 and the polarizing plate 10 provided between the bonding unit 50 and the drying unit 70 and guiding the polarizing element 11 and the first and second protective films 14 and 15 to be bonded by -11 to 201243405 The laminated film l〇a of the configuration is formed by the direction changing unit 60 that changes the moving direction of the laminated film 10a. In addition, in the following description, the right, right, left, and left sides are the right, right, left, and left sides of the face. As shown in FIG. 2, the bonding portion 50 of the bonding polarizing element 1 1 and the first and second protective films 14 and 15 is guided so that the polarizing element 11 is supplied from the top to the bottom in the vertical direction. The first guide roller 55 and the second guide roller 56 that feeds the first protective film 14 from the left side of the polarizing element 1 1 and the second protective film 15 from the right side are guided so as to be close to the polarizing element 11 The first guide roller 57 and the first protective film 14 and the second protective film 15 which are provided between the polarizing element 11 and the right and left, and the first adhesive 12a and the second adhesive 13a are supplied first. The nozzle 51, the second nozzle 52, and the pair of pinching elements 11 and the first and second protective films 14 and 15 to which the first adhesive 12a and the second adhesive 13a are applied are pressure-bonded to the right and left. The pinch rolls 58a and 58b are formed. The first and second nozzles 51 and 52 are disposed at positions symmetrical to each other on the right and left sides, and the polarizing element 11 and the first and second protective films 14 respectively supplied to the left and right sides thereof. The first and second adhesives 12a and 13a are applied between 15 so that the discharge port is disposed almost downward in the vertical direction. Further, in the bonding unit 50, a preliminary drying device 59 is preferably provided between the pair of pinch rolls 58a and 58b and the direction changing unit 60. The preliminary drying device 5 9, which is only schematically shown in Fig. 2, for example, exemplifies a drying device according to a warm heater, a far-infrared heater, or a blowing air according to high-temperature air. -12-201243405 The polarizing element 1 1 supplied to the bonding unit 50 is composed of a film of a strip-shaped PVA-based resin, and is uniaxially stretched by dyeing with a dichroic dye such as iodine in the previous step of bonding. The film thickness of the stretched PVA-based resin film is, for example, ΙΟ/im to 40/zm, and the width thereof is, for example, 500 mm to 2000 mm. The previous step can be produced by using a known device or a manufacturing method. Although the illustration or the detailed description is omitted, the example will be briefly described below. The PVA-based resin film was pulled out from a strip-shaped long PVA-based resin film source wound in a roll shape, and swelled in pure water. Subsequently, it was immersed in an aqueous solution of iodine in potassium iodide to dye the PVA-based resin film with iodine. Next, the PVA-based resin film dyed with iodine was immersed in an aqueous solution containing boric acid and subjected to a bridge treatment. Next, this PVA-based resin film was uniaxially stretched at a specific magnification. The stretching ratio is, for example, 4 to 7 times. The extension can be carried out in two or more stages, either before dyeing or simultaneously with dyeing, or in a bridging step. At this time, the bridging treatment can be performed simultaneously with the dyeing or after the dyeing. Thereafter, the PVA-based resin film is dried to obtain a polarizing element 11 having polarizing performance, and is supplied to the bonding portion 50. The strip-shaped long-length film-shaped polarizing element 11' supplied to the bonding portion 50 is guided downward in the vertical direction by the first guiding roller 55'. The moving speed of the polarizing element , is, for example, i 〇 m / min to 50 m / min. Each of the first and second protective films 14 and 15 supplied from the left and right sides is made of a TAC resin, and is supplied as a strip-shaped long film, and the width thereof corresponds to the width of the polarizing element 11 . The film thickness is, for example, 20#m to 120ym, and the moving speed thereof also matches the moving speed of the polarizing element 11. The adhesion surface of the TAC-based resin and the PVA-based resin may be alkalized or corona-discharged in order to improve the adhesion of £13-201243405. In the step of bonding the polarizing element 11 and the left and right first and second protective films 14 and 15 to the bonding unit 50, the polarizing element 11 is moved upward from the upper side in the vertical direction, and the first protective film is provided from the left obliquely upward side. 14. The second protective film 15 is provided obliquely upward from the right side, and is gradually moved symmetrically toward the polarizing element 11 to be moved and supplied. Then, before the bonding, between the polarizing element 11 and the first protective film 14, the first and second nozzles 51 and 52 are supplied and coated between the polarizing element 11 and the second protective film 15 respectively. First and second subsequent agents 12a and 13a. The first and second adhesives 12a and 13a are dropped from the first and second nozzles 51 and 52 in the vertical direction, and are on the surface of the polarizing element 11 or the first and second protective films 14 and 15 The respective surfaces are applied between the polarizing element 11 and the first and second protective films 14 and 15 at a time point close to the contact. The application of the first and second adhesives 1 2a and 1 3a is such that the polarizing element 1 1 and the first protective film 14 on the left side, the polarizing element 11 and the second protective film 15 on the right side are substantially bilaterally symmetric with respect to the polarizing element. Since the ground is applied, the uniformity of the coating on the left and right is good. The first and second adhesives 12a and 13a are each an adhesive of a PVA resin. Since the PVA-based resin has high hydrophilicity, water is mainly used as a solvent. In short, the adhesive composed of the aqueous solution of the PV A-based resin is dropped from the first and second nozzles 51 and 52. By the first and second adhesives 12a and 13a, the first adhesive layer 12 and the second layer are formed between the polarizing element 1 1 and the first protective film 14 and the second protective film 15 respectively. Next to the agent layer 13. In other words, by the bonding step, the polarizing element 形成 is formed, and the first adhesive layer 14' the second adhesive layer 13 is interposed on each of the surfaces 14-201243405, and the first protective film 14 and the second layer are formed. The laminated film 10a which consists of the film of the polarizing plate 1 of the protective film 15 adhered. In addition, the film structure of the laminated film 10a is abbreviate|omitted by FIG. It is preferred in the bonding step to include a preliminary drying step according to the preliminary drying device 59. In the preliminary drying step, after the laminated film 10a is formed by a pair of pinch rolls 58a and 58b, the first adhesive layer is applied before being converted in accordance with the direction of the direction changing portion 60. 12. A part of the drying of the second adhesive layer 13 is preliminarily carried out prior to the drying step of the drying unit 70. In the preliminary drying step, the laminated film 10a is passed through the vertical direction in the preliminary drying device 59. The drying method is exemplified by a warm drying method, drying according to far infrared rays, or drying according to high temperature air. the way. After the bonding step, the first adhesive layer 12 and the second adhesive layer 13 in the laminated film 10a are dried to volatilize the solvent. This is carried out in the drying step by the drying section 70 of Fig. 2 . As shown in FIG. 2, the drying unit 70 is composed of a drying chamber 71 for vaporizing the solvent in the first adhesive layer 12 and the second adhesive layer 13 to dry, for example, The inside of the drying chamber is omitted from the drawing, and a warming heater, a far-infrared heater, or a drying device that sends air at a high temperature is disposed to laminate the film 10a in the drying chamber 71. The way the horizontal direction passes is constructed. The drying method is exemplified by a warm drying method, a drying method according to far infrared rays, or a drying method according to high temperature air. In the drying unit 7 , the water in the first adhesive layer 12 and the second adhesive layer 13 of the PVA resin is volatilized and evaporated to be dried, and -15-201243405 is completed. In other words, by the bonding step and the drying step, the subsequent steps of the polarizing element 11 and the first and second protective films 14 and 15 are carried out to obtain a laminated film 10a of the polarizing plate 10. Thereafter, although not shown, the strip-shaped laminated film 10a is cut into a specific shape as the polarizing plate 10. In addition, in the case where the laminated film 10a is moved in the horizontal direction in the drying chamber 71, in order to improve the drying efficiency, the drying chamber 71 may be moved up and down, obliquely up and down, etc., and the moving direction may be changed. . As described above, the bonding unit 50 causes the polarizing element 11 to be vertically turned up so that the application of the first and second adhesives 12a and 13a on both surfaces of the polarizing element 11 is uniformly performed. Movement is preferred. Further, by doing so, it is possible to save the installation area in the horizontal direction of the polarizing plate manufacturing apparatus. However, the distance which can be set in the vertical direction is also limited, so in the drying section 70 of the next station, the laminated film 10a is moved in the horizontal direction. In the drying section 70, it is preferable to prevent the unevenness of the liquid of the solvent component by gravity, and to prevent the occurrence of appearance defects such as wrinkles, it is preferable to move in the horizontal direction. Further, since the height of the building is usually limited, it is preferable that the laminated film 10a is moved in the horizontal direction in the drying portion 70. Therefore, it is necessary to change the moving direction of the laminated film 10a from the vertical direction to the horizontal direction by the direction changing portion 60 after the bonding step and before the drying step. Use this as a direction change step. In the direction changing unit 60 of the apparatus for manufacturing a polarizing plate according to the present invention, at least two direction changing guide rollers for changing the direction of the laminated film 10a are disposed. An example of the arrangement of the direction change guide-16-201243405 roller of the present invention is shown in the direction changing unit 60 of Fig. 2 . In FIG. 2, the drying unit 70 is disposed on the left side of the bonding unit 50. Therefore, the direction changing unit 60 of the present invention is configured to be shifted to the left side when facing the laminated film 10a. In the case where the drying unit 70 is disposed on the right side and is directed to the right side toward the laminated film 10a, it may be explained in the same manner by explaining the left and right symmetry. In Fig. 2, an example in which two direction changing guide rollers are disposed in the direction changing portion 60 is shown. This is referred to as a first direction change guide roller 61 and a second direction change guide roller 62. The first direction change guide roller 61 is disposed on the left side along the lower direction of the bonding unit 50 in the direction in which the laminated film 10a is moved in the vertical direction. The second direction change guide roller 62 is disposed on the lower left side of the oblique direction of the first direction change guide roller 61, and is converted into the upper surface of the laminated film 10a in the horizontal direction. The laminated film 10a is guided by the two directions to be guided by the direction change, but the whole direction is from the vertical direction to the horizontal direction, and is substantially substantially 90 degrees by the direction. However, since the direction change is performed in two stages, the bending angle of the laminated film 10a of the guide roller by the respective directions can be larger than 90 degrees (right angle), and can be alleviated in one direction. By changing the degree of bending of the laminated film 10a on the guide roller, it is possible to prevent the protective film from being peeled off by the polarizing element when the laminated film is bent by 90 degrees once as in the prior art. Here, the bending angle is a direction in which the straight line in the moving direction of the laminated film 10a before the guide roller is changed in the direction and the direction in which the laminated film 10a in the moving direction passes. The angle of the guide roller side. Here, the first direction change guide roller 61 and the second direction change guide roller -17-201243405 62 may be formed by a normal guide roller, and the surface material may be made of resin or metal. The cross section is circular, and the diameter is, for example, 100 mm to 450 mm, preferably 200 mm to 300 mm, and the width thereof is larger than the width of the laminated film 10a. Further, it is preferable that the first direction change guide roller 61 and the second direction change guide roller 62 have a rotation drive mechanism, and it is preferable to have a temperature control mechanism. For example, the temperatures of the first direction change guide roller 61 and the second direction change guide roller 62 are controlled to any one of a range of preferably 35 ° C to 45 ° C, and more preferably controlled. At 40 °C. The first direction change guide roller 61 and the second direction change guide roller 62 may be rolls of the same diameter, material, or mechanism, or rolls of different diameters, materials, and mechanisms may be used. The inventors of the present invention further studied the better arrangement of the two direction changing guide rolls. This is illustrated in Figure 3. Fig. 3 is a view showing only the direction changing unit 60 of Fig. 2 is selected. The inventors of the present invention have found that the angle 0 at which the first direction change guide roller 61 is bent is particularly important in order to prevent peeling of the protective film. In order to make the preferred range easier to understand, it is represented by a complementary angle 0' (0 + 0, = 18 (Γ) of the bending angle 0. That is, 0 means that the guide roller is changed by the first direction. 61. The angle at which the laminated film 10a is changed in the direction of the vertical direction by the direction change. The first direction change guide roller 61 is used so that the peeling of the protective film does not occur, and it is necessary to make 0' as close as possible to 0°, but In this case, the bending angle of the second direction change guide roller 62 is sharp, and peeling of the protective film occurs there. In view of such factors, the inventors of the present invention have found that peeling of the protective film does not occur. 0' is 35° < 0 ’ < 70. The better is 4 (Γ < 0 ’ < 65° » For example, at -18-201243405 0'=3 (peeling occurs at Γ, at 0'=45°, 0'=6 (no peeling or crepe occurs). In addition, the first direction change guide The distance between the center of the roller 61 and the second direction changing guide roller 62 is preferably in the range of 250 mm to 1000 mm, more preferably 300 mm to 500 mm, in the vertical direction. In the case where the direction changing unit 60 is provided with two direction changing guide rollers, in the present invention, three or more direction changing guide rollers may be disposed. In the example of Fig. 3, a third direction changing guide roller is further added. An example of the direction changing unit 60 in which three direction changing guide rollers are disposed is shown in Fig. 4. Fig. 4 shows another example in which only the illustration of the direction converting unit 60 of Fig. 2 is selected. Similarly to the example of Fig. 3, The first direction change guide roller 61 is disposed on the left side along the moving direction of the laminated film 10a in the vertical direction, and the second direction change guide roller 62 is disposed on the lower left side of the first direction change guide roller 61. The direction is changed to the upper surface of the laminated film 10a in the horizontal direction. Then, the third direction change guide 63 is disposed between the first direction changing guide roller 61 and the second direction changing guide roller 62. The respective bending angles of the three direction changing guide rollers are larger than 90 degrees, more than 180 degrees. By moving the guide roller 62 in the second direction, the moving direction of the laminated film 10a is converted into the horizontal direction. Thus, by arranging three direction changing guide rollers, the two directions are arranged in FIG. When the guide roller is changed, the degree of bending of the laminated film 1 〇a bent by the direction changing guide rolls can be further relaxed, and the peeling of the protective film can be further prevented. In the present invention, the direction changing portion can also be used. Further, four or more direction change guide rollers are disposed. Even when three or more of the guide rolls are disposed, the first direction change guide roller 6 1 is bent by the first direction change guide roller as in the case of -19-201243405. The bending angle 0 of the laminated film 10a is important, and is preferably 35 as the complementary angle 0' (θ + 0' = 18 〇 °) of the bending angle 0 as described above. <0’ <7〇°, more preferably 4〇° <0, <65. . When three or more direction change guide rollers are disposed, the same roller as the first and second guide rolls 61 and 62 can be used for any of the direction change guide rolls. The institutions can be the same or different. Further, the film configuration of the laminated film i〇a is omitted in Figs. 3 and 4 . Although the first protective film 14 and the second protective film 15 are TAC resin, the present invention is not limited thereto, and one or both of the first protective film 14 and the second protective film 15 except for the TAC resin. In addition, a cycloolefin resin such as norbornene, a polyethylene terephthalate (PET) resin, or an acrylic resin may be used, and a laminated film of these may be used. Further, the first protective film 14 and the second protective film 15 may be made of the same material or may be made of different materials. Further, one or both of the first and second protective films 14 and 15 may be a retardation film. Further, one or both of the first and second protective films 14' 15 may be provided with an AG (anti-glare, anti-parate layer) on the surface thereof for anti-glare property, anti-reflection function, or optical unevenness. The treatment may also have a haze inside the film. Further, either or both of the first and second protective films 14, 15 may be subjected to antistatic treatment. In addition, the first adhesive agent 12a and the second adhesive agent 13a are described as being in the case of a hydrophilic PVA-based resin, but the present invention is not limited thereto, and the first protective film 14 and the second protective layer are used in response to -20-201243405. The material of the film 15 may be any material. For example, an acrylic adhesive, an urethane-based adhesive, or the like may be used, and an appropriate solvent such as an organic solvent may be used depending on the respective adhesives. Further, the first adhesive 12a and the second adhesive 13a may be the same or different ones. Further, as the first adhesive 12a and the second adhesive 13a, an active energy ray-curable adhesive such as ultraviolet rays can be used. In this case, although the illustration is omitted, in the apparatus for manufacturing a polarizing plate of FIG. 2, in addition to the drying chamber 71 of the drying unit 70, an active energy ray curing device for curing the adhesive by an active energy ray such as ultraviolet rays is disposed. The adhesive is subjected to a hardening treatment instead of the drying treatment. That is, the drying unit 70 may be configured by a curing device that cures the adhesive, and the drying step of the adhesive may be a step of curing the adhesive. An example of the adhesive agent for the active energy ray hardening is an ultraviolet (UV) curable epoxy-based adhesive. Examples of the active-strength wire curing device include an ultraviolet curing device. The ultraviolet (UV) hardening type adhesive is then rapidly performed, and the peeling of the protective film is not likely to occur in the original direction, but the occurrence of peeling of the protective film can be further suppressed by the application of the present invention. When the active energy ray-curable adhesive is used in this way, the preliminary drying device 5 can be omitted, and the polarizing plate 10 of the present invention produced by using the polarizing plate manufacturing apparatus and the polarizing plate manufacturing method of the present invention will be described. The liquid crystal display device of the present invention. Fig. 5 is a view showing a liquid crystal panel 20 constituting the liquid crystal display device of the present invention. In addition, the liquid crystal display device is constituted by a backlight system disposed on the back side of the liquid crystal panel - 21 - 201243405 20, but a known configuration is omitted, and illustration and description thereof are omitted. The liquid crystal panel 20 is a first polarized light that is bonded to the front surface of the liquid crystal cell 2 1 on the front side of the liquid crystal cell 2 (the opposite side of the visual recognition side, that is, the opposite side of the backlight system) by interposing the first adhesive layer 22f. The plate 10f is formed by a second polarizing plate 10r that is bonded to the surface of the liquid crystal cell 21 on the back side (that is, on the backlight system side) via the second adhesive layer 2 2r. The first polarizing plate 10f and the second polarizing plate 1 Or have their polarization axes arranged as crossed Nicols. The liquid crystal cell 21 may be any of a TN type, an STN type, a VA type, and an IPS type, and a known liquid crystal cell may be used, and the description thereof and the internal structure are omitted. In the liquid crystal panel 20 of the liquid crystal display device of the present invention, the polarizing plate 1 according to the present invention may be used in either or both of the first polarizing plate 1 Of and the second polarizing plate 1 Or. Further, in Fig. 5, the film configuration of the first polarizing plate 10f and the second polarizing plate 10r is omitted. It is also possible to use a separate adhesive for the first adhesive layer 22f and the second adhesive layer 22r (hereinafter, the first adhesive layer 22f and the second adhesive layer 22r are not distinguished from each other by the adhesive layer). A known adhesive. For example, an acrylic acid-based adhesive, an urethane-based adhesive, a polyoxyn-based adhesive, or the like can be given. In addition, an adhesive having a UV cut function can also be used. The adhesive layer is generally pre-formed by the manufacturer of the polarizing plate in manufacturing. In short, after the polarizing element 1 1 and the first and second protective films 14 and 15 are completed, a strip-shaped long laminated film 10a composed of a film of the polarizing plate 1 is obtained, and then the film is cut off. The laminated film 10a is formed by applying an adhesive layer to the surface of the liquid-22-201243405 unit cell 21, and a release film (not shown) is bonded to the surface of the adhesive layer, and thereafter, The shape of the liquid crystal cell 21 to be bonded together with the adhesive layer and the release film is also obtained, and a sheet-shaped polarizing plate product in which an adhesive layer and a release film are formed on one surface of the polarizing plate 10 is obtained. This is housed in a liquid crystal panel production line where the polarizing plate 10 of the adhesive layer formed on the surface of the polarizing plate 10 is bonded to the liquid crystal cells 21. Here, the release film is provided to protect the surface of the adhesive layer, and is peeled off before the polarizing plate 10 is attached to the liquid crystal cell 21. Further, when the adhesive layer and the release film are formed on the surface of the liquid crystal cell 21 to be bonded to the strip-shaped laminated film 10a, the film is not completely cut, for example, only in the part of the release film and the adhesive layer. The cut surface (half cut) is formed in the shape of the liquid crystal cell 21 to be bonded, and the polarizing plate product which is wound in the form of a strip-shaped long film is supplied to the production line where it is bonded to the liquid crystal cell. The peeling film is removed by the roll before 21, and it may be completely cut and bonded in accordance with the shape of the liquid crystal cell 21. The embodiments of the present invention have been described above, but the present invention is not limited thereto, and may be modified without departing from the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing an example of a polarizing plate manufactured by the manufacturing method of the present invention. Fig. 2 is a cross-sectional view showing an example of a manufacturing apparatus of a polarizing plate of the present invention. Fig. 3 is a cross-sectional view showing an example of a direction changing portion of the apparatus for manufacturing a polarizing plate of the present invention. -23- 201243405 Fig. 4 is a cross-sectional view showing another example of the direction changing portion of the apparatus for manufacturing a polarizing plate of the present invention. Fig. 5 is a cross-sectional view showing an example of a liquid crystal display device using a polarizing plate of the present invention. Fig. 6 is a cross-sectional view showing an example of a manufacturing apparatus of a polarizing plate of the prior art. [Description of main component symbols] I 〇: polarizing plate l〇a: laminated film i〇f: first polarizing plate l〇r: second polarizing plate II: polarizing element 12: first adhesive layer 12a: first Agent 1 3 : second adhesive layer 1 3 a : second adhesive 14 : first protective film 15 : second protective film 2 : liquid crystal panel 21 : liquid crystal cell 22f : first adhesive layer 22r : Second adhesive layer 5: Bonding portion 5 1 : First nozzle - 24 - 201243405 5 2 : Second nozzle 55 : First guide roller 56 : Second guide roller 57 : Third guide roller 58a: Pinch roll 58b: pinch roll 59: preliminary drying device 60: direction changing unit 61: first direction changing guide roller 62: second direction changing guide roller 63: third direction change Guide roller 70: drying section 7 1 : drying chamber 1 l〇a : laminated film 1 1 1 : polarizing element 1 1 2 a : first adhesive 1 1 3 a : second adhesive 1 14 : first Protective film 1 15 5: second protective film 1 5 1 : first nozzle 1 5 2 : second nozzle 155 : guide roller 158a: pinch roll 158b : pinch roll -25 201243405 161: guide roller 171: drying chamber-26

Claims (1)

201243405 七、申請專利範圍： 1. 一種偏光板之製造裝匱，其特徵爲至少具有： 使由聚乙烯醇系樹脂所構成的偏光元件的帶狀膜在鉛 直方向由上往下移動，藉由接著劑將由其左右分別供給的 第1保護膜及第2保護膜同時貼合於前述偏光元件的貼合 部，及 使前述第1保護膜、前述偏光元件、及前述第2保護 膜被貼合後之層積膜之移動，由前述鉛直方向上往下的移 動，方向變換爲水平方向的移動之方向變換部，以及 對前述層積膜施以往前述水平方向的移動之方向變換 後，對前述層積膜之前述接著劑施以乾燥或硬化之乾燥部； 前述方向變換部設有複數導引輥，以藉由前述複數導 引輥使前述層積膜之方向變換分爲2階段以上來實施的方 式構成。 2. 如申請專利範圍第1項之偏光板之製造裝置，其中 前述複數導引輥之各個，具備旋轉驅動機構。 3. 如申請專利範圍第1或2項之偏光板之製造裝置， 其中 前述複數導引輥之各個，具備溫度控制機構。 4. 如申請專利範圍第1至3項之任一項之偏光板之製 造裝置，其中 前述複數導引輥，係由使由前述鉛直方向上往下移動 的前述層積膜方向變換爲斜向方向的第1導引輥，以及使 藉由前述第1導引輥方向變換爲斜向方向的前述層積膜方 -27- 201243405 向變換爲前述水平方向的第2導引輥所構成，前述層積膜 的方向變換係以分爲2階段實施的方式構成的。 5. 如申請專利範圍第1至3項之任一項之偏光板之製 造裝置，其中 前述複數導引輥，係由使由前述鉛直方向上往下移動 的前述層積膜方向變換爲斜向方向的第1導引輥，及使前 述層積膜方向變換爲前述水平方向的第2導引輥，以及被 設於前述第1導引輥與前述第2導引輥間的進而另外之1 個或複數個導引輥所構成，前述層積膜的方向變換係以分 爲3階段以上來實施的方式構成的。 6. 如申請專利範圍第4或5項之偏光板之製造裝置， 其中 根據前述第1導引輥之前述層積膜之被方向變換的由 前述鉛直方向起算之角度，爲35度至70度。 7. —種偏光板之製造方法，其特徵爲至少具有： 使由聚乙烯醇系樹脂所構成的偏光元件的帶狀膜在鉛 直方向由上往下移動而供給，由其左右分別供給第1保護 膜及第2保護膜，藉由接著劑將前述第1保護膜及前述第 2保護膜同時貼合於前述偏光元件的貼合步驟，及 使前述第1保護膜、前述偏光元件、及前述第2保護 膜被貼合後之層積膜之移動，由前述鉛直方向上往下的移 動，方向變換爲水平方向的移動之方向變換步驟，以及 對前述層積膜施以往前述水平方向的移動之方向變換 後，對前述層積膜之前述接著劑施以乾燥或硬化之乾燥步 -28- 201243405 驟； 前述方向變換步驟，把前述層積膜之方向變換分爲2 階段以上來實施· 8. 如申請專利範圍第7項之偏光板之製造方法，其中 前述方向變換步驟，係將前述層積膜的方向變換分爲 2階段實施的步驟，由使由前述鉛直方向上往下移動的前 述層積膜方向變換爲斜向方向的第1方向變換，以及使藉 由前述第1方向變換而方向變換爲斜向方向的前述層積膜 方向變換爲前述水平方向的第2方向變換所構成》 9. 如申請專利範圍第7項之偏光板之製造方法，其中 前述方向變換步驟，係將前述層積膜的方向變換分爲 3階段以上實施的步驟，由使從前述鉛直方向上往下移動 的前述層積膜方向變換爲斜向方向的第1方向變換，以及 使前述層積膜方向變換爲前述水平方向的第2方向變換， 以及在前述第1方向變換與前述第2方向變換之間對前述 層積膜施加的進而其他之1回或複數回方向變換所構成。 10. 如申請專利範圍第8或9項之偏光板之製造方法 ，其中 根據前述第1方向變換之前述層積膜之被方向變換的 由前述鉛直方向起算之角度’爲35度至70度。 Π.—種偏光板，其特徵爲係以申請專利範圍第7至 10項之任一項之偏光板之製造方法所製造的° 12.—種液晶顯示裝置，其特徵爲使用申請專利範圍 第11項之偏光板。 -29-201243405 VII. Patent application scope: 1. A manufacturing device for a polarizing plate, characterized in that it has at least: a belt-shaped film of a polarizing element composed of a polyvinyl alcohol-based resin is moved from top to bottom in a vertical direction by The first protective film and the second protective film which are respectively supplied to the right and left sides are bonded to the bonding portion of the polarizing element, and the first protective film, the polarizing element, and the second protective film are bonded together. The movement of the laminated film after the movement in the vertical direction is shifted in the direction of the horizontal direction, and the direction of the movement of the laminated film in the horizontal direction is changed. The above-mentioned adhesive agent of the laminated film is applied to a drying portion that is dried or hardened; and the direction changing portion is provided with a plurality of guide rolls, and the direction of the laminated film is divided into two or more stages by the plurality of guide rolls. The way it is composed. 2. The apparatus for manufacturing a polarizing plate according to claim 1, wherein each of the plurality of guide rolls has a rotation drive mechanism. 3. The apparatus for manufacturing a polarizing plate according to claim 1 or 2, wherein each of the plurality of guide rolls has a temperature control mechanism. 4. The apparatus for manufacturing a polarizing plate according to any one of claims 1 to 3, wherein the plurality of guide rolls are changed in a direction of the laminated film which is moved downward in the vertical direction. The first guide roller in the direction and the second guide roller which is converted into the horizontal direction by the laminated film -27-201243405 which is converted into the oblique direction by the direction of the first guide roller, The direction change of the laminated film is configured in a two-stage manner. 5. The apparatus for manufacturing a polarizing plate according to any one of claims 1 to 3, wherein the plurality of guide rolls are changed in a direction of the laminated film which is moved downward in the vertical direction. a first guide roller in the direction, a second guide roller that converts the laminated film direction into the horizontal direction, and another one that is provided between the first guide roller and the second guide roller One or a plurality of guide rolls are formed, and the direction change of the laminated film is configured to be divided into three or more stages. 6. The apparatus for manufacturing a polarizing plate according to claim 4, wherein the angle of the laminated film according to the first guiding roller is 35 degrees to 70 degrees from the vertical direction. . 7. A method of producing a polarizing plate, characterized in that at least a strip-shaped film of a polarizing element made of a polyvinyl alcohol-based resin is supplied from the top to the bottom in a vertical direction, and is supplied to the left and right sides. a protective film and a second protective film, wherein the first protective film and the second protective film are simultaneously bonded to the polarizing element by a bonding agent, and the first protective film, the polarizing element, and the The movement of the laminated film after the second protective film is bonded, the direction of the movement in the vertical direction, the direction change to the horizontal direction, and the horizontal movement of the laminated film After the direction change, the drying agent of the laminated film is dried or cured by drying step -28-201243405. The direction changing step is performed by dividing the direction of the laminated film into two or more stages. The method of manufacturing a polarizing plate according to claim 7, wherein the direction changing step is to divide the direction of the laminated film into two-stage steps, The direction of the laminated film that moves downward in the vertical direction is converted into the first direction in the oblique direction, and the direction of the laminated film that is converted into the oblique direction by the first direction conversion is converted to the above-described level. The method of manufacturing a polarizing plate according to the seventh aspect of the invention, wherein the direction changing step is a step of converting the direction of the laminated film into three or more stages, The direction of the laminated film that moves downward in the vertical direction is converted into a first direction conversion in the oblique direction, and the second direction conversion in which the laminated film direction is converted into the horizontal direction, and the first direction The conversion and the second direction conversion are performed by performing another one-time or complex-back direction conversion on the laminated film. 10. The method of producing a polarizing plate according to claim 8 or claim 9, wherein the angle "from the vertical direction of the laminated film converted by the first direction is 35 degrees to 70 degrees. A polarizing plate characterized by being a method for producing a polarizing plate according to any one of claims 7 to 10, which is characterized in that the patent application scope is used. 11 items of polarizing plates. -29-
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