201030695 六、發明說明： 【發明所屬之技術領域】 • 本發明係有關於一種藉由將偏光板貼合於光學顯示單元 . @製造光學顯示裝置之光學顯示裝置製造方法及光學顯示 裝置製造用捲轴素材。 【先前技術】 作為一般之偏光板之一例，在包括薄膜狀之偏光元件之 Φ 偏光膜之兩面上，經由黏著劑層而貼合有偏光元件保護膜 之雙面保護型偏光板已為人所知。上述偏光膜係藉由乾燥 例如聚乙烯醇（PVA)薄膜而形成，作為上述偏光元件保護 膜’係使用TAC(三醋酸纖維素）薄膜等。 ' 近年來，於作為使用偏光板之裝置之一例的液晶顯示裝 置等中，要求薄壁化及輕量化，與此相伴地，期望一種較 偏光板更為薄壁化及輕量化之構成。因此，考慮省略偏光 膜之兩面所貼合之偏光元件保護膜之一方，製成單面保護 φ 型偏光板，藉此實現偏光板之薄壁化及輕量化。 圖4係表示單面保護型偏光板52之構成例之剖視圖。該 偏光板52中，在其一個面上經由黏著劑層M貼合有表面保 護膜51，並且，在另一個面上，經由黏著劑層55貼合有脫 模膜53。如該圖4所示，在單面保護型偏光板52中，至少 在具有偏光元件之偏光膜58之與脫模膜53為相反側之面上 貼合有偏光元件保護膜57。如此，單面保護型偏光板52僅 -在與脫模膜53為相反側之面上具有偏光元件保護膜57，因 此表责面之構成呈不對稱。因此，存在偏光板52會朝向 144625.doc 201030695 脫模膜53側翹曲，從而在向光學顯示單元等貼合對象貼合 時，導致貼合位置之精度變差之問題。因此，在下述專利 文獻1中提出有一種技術方案：將具有特定性質之合成樹 脂膜以附加特定張力之方式進行控制並貼合至偏光板上， 藉此消除至貼合時為止之偏光板之翹曲。 專利文獻1:日本專利第3368524號公報 【發明内容】 [發明所欲解決之問題] 然而，在上述專利文獻丨所揭示之技術中，必須使用具 有特疋性質之合成樹脂膜，而且，貼合該合成樹脂膜時， 必須進行複雜之控制。因此，有偏光板之製造成本較高之 問題。 又，在使用藉由上述專利文獻揭示之技術矯正了翹 曲之偏光板之情形時，由於合成樹脂膜之較高之張力，於 偏光媒上產生拉伸應力，從而有成為剝離之主要原因之應 力作用在與光學顯示單元之貼合面上。尤其，於偏光板在 朝偏光元件保護膜側（與圖4為相反側）翹曲之狀態下貼合於 光學顯示單元之情形時，易自其端部發生剝離。 本發明係鑒於上述實際情況而進行者，目的在於提供一 種旎夠以簡單之構成有效地防止偏光板相對於光學顯示單 几之剝離之光學顯示裝置製造方法及光學顯示裝置製造用 捲軸素材。 [解決問題之技術手段] 本發明之第1技術方案之光學顯示裝置製造方法，其特 144625.doc 201030695 • 徵在於：其係用於藉由將偏光板貼合在光學顯示單元而製 造光學顯示裝置者，該製造方法包括：搬送步驟，其係自 捲軸素材陸續放出偏光板以及脫模膜，該捲轴素材係將翠 面具有偏光元件保護膜之上述偏光板以上述脫模膜側作為 内側捲繞而形成者，上述脫模膜係對該偏光板在與上述偏 光元件保護膜為相反側之面上經由黏著劑層而貼合者；切 斷步驟’其係將自上述捲軸素材陸續放出之上述偏光板與 • 上述脫模膜一起、或者保留上述脫模膜，而切斷為特定尺 寸，以及貼合步驟’其係將上述偏光板貼合在上述光學顯 示單元上。 根據此種構成，將具有朝向脫模膜側翹曲之性質之單面 保護型偏光板以脫模膜側為内侧而捲繞，藉此可在捲回時 以朝向脫模膜側趣曲之狀態而良好地進行保持。藉此，在 將自捲轴素材陸續放出之偏光板切斷為特定尺寸並貼合在 光學顯示單元上之狀態下’可防止偏光板自光學顯示單元 _ 之貼合面剝離。因此，可利用以脫模膜侧作為内側而將偏 光板捲繞之簡單構成’有效地防止偏光板相對於光學顯示 單元之剝離。 又’由於偏光板係以黏著劑層一側為内側捲繞，因此， 可以防止黏著劑之劃痕（表面之劃傷）。藉此，可防止由於 黏著劑之劃痕引起之貼合時之氣泡之混入，並且，可省略 . 用於消除氣泡之高壓釜處理等步驟。進而，藉由在偏光板 - 之單面上設置偏光元件保護膜’與在雙面上皆設置偏光元 件保護膜之偏光板相比，可降低捲軸素材之製造成本。 144625.doc 201030695 本發明之第2技術方案之光學顯示裝置製造方法中，在 上述貼合步驟t ’一面對上述偏光板施加特定之張力，一 面貼合在上述光學顯示單元上。 根據該構;’藉由對偏光板施加特定之張力，可將面向 脫模膜-側勉曲之偏光板以筆直拉伸之狀態貼合在光學顯 示單元上。藉此，可提高偏光板對光學顯示單元之貼合位 置之精度。 本發明之第3技術方案之光學顯示裝置製造用捲軸素 材，其特徵在於，其係藉由將偏光板捲繞而形成，用於將 上述偏光板切斷為特定尺寸並對光學顯示單元貼合者，其 係藉由將單面具有偏光元件保護膜之偏光板以脫模膜側作 為内側捲繞而形成，上述脫模膜係對該偏光板在與上述偏 光元件保護膜為相反側之面上經由黏著劑層而貼合者。 根據該構成，可提供與本發明之第1技術方案之光學顯 示裝置製造方法發揮同樣效果之光學顯示裝置製造用捲轴 素材。 根據本發明’藉由以脫模膜側作為内側而將偏光板捲繞 之簡單構成，可將具有面向脫模膜側鍾曲之性質之單面保 護型之偏光板’在捲回時以向脫模膜側勉曲之狀態良好地 予以保持，因此’可有效地防止偏光板相對於光學顯示單 元之剝離。又，藉由將偏光板以脫模膜側作為内側捲繞， 可在捲回時以向脫模膜側翹曲之狀態良好地予以保持，因 此，即使在偏光板通過搬送輥等之情形時，亦可防止在搬 送中偏光板自脫模膜剝離。 144625.doc 201030695 【實施方式】 以τ對本發明之—實施形態進行一 明之一眘*4: π & _u 1糸表不本發 實施形態之光學顯示裝置製造 圖。圖9总* - 万去之一例之流程 .圖圖2係表示光學顯示裝置之製造李 圖。 、系統之一例之概略 (光學顯示單元） 、首先，作為藉由本發明所製造之光學顯示裝置中所用之 ❿t學顯示單元W ’可舉出例如液晶胞之破璃基板單元、有 機EL發光體單元等。光學顯示單元w形成為例如長方形。 (偏光板） 作為藉由本發明所製造之光學顯示裝置之光學顯示單元 W上所貼合之偏光板，可舉出偏光膜、相位差膜、亮度提 同膜、該等薄膜之2種以上之組合積層膜等，但至少包括 上述偏光膜。在偏光板之一個面上，以貼合於光學顯示單 疋W之方式而形成有黏著劑層，並設有保護該黏著劑層之 參 脫模媒。又，在偏光板之另一個面上，經由黏著劑層而設 置有表面保護膜。關於該等薄膜之具體構成將後述。以 下’有時將積層有表面保護膜以及脫模膜之偏光板稱為片 材製品。 (製造流程圖） (1) 第1捲軸素材準備步驟（圖1、S1)。準備藉由將帶狀之 第1薄片製品捲成捲軸狀而形成之第1捲轴素材。第1捲軸 素材之寬度取決於光學顯示單元w之貼合尺寸。 (2) 搬送步驟（圖1、S2:第1搬送步驟）。自所準備並設置 144625.doc 201030695 之第1捲轴素材陸續放出第1片材製品3〇，並搬送至下游 侧。 (3)第1檢查步驟（圖1、S3)。使用第1缺陷檢查裝置14檢 查第1片材製品30之缺陷。作為此處之缺陷檢查方法，可 舉出以下之方法：對第1片材製品3〇之兩面進行基於透射 光、反射光之圖像攝影、圖像處理之方法；將檢查用偏光 膜配置在CCD照相機與檢查對象物之間，以使其與作為檢 查對象之偏光板之偏光軸（光學軸）成為正交偏光（有時稱為 〇度相交）而進行圖像攝影、圖像處理之方法；將檢查用偏 光膜配置在CCD照相機與檢查對象物之間，以使其與作為 檢查對象之偏光板之偏光軸成為特定角度（例如，大於〇度 且在10度以内之範圍）（有時稱為χ度相交）而進行圖像攝 影、圖像處理之方法。又，圖像處理之算法可適用公知之 方法，例如可藉由基於二值化處理之濃淡判定來檢測缺 陷。 於基於透射光之圖像攝影、圖像處理方法中，可檢測出 第1片材製品30内部之異物。於基於反射光之圖像攝影、 圖像處理方法中，可檢測出第i片材製品3〇表面之附著異 物。於基於0度相交之圖像攝影、圖像處理方法中，主要 可作為亮點而檢測出表面異物、污垢、内部之異物等。於 基於X度相交之圖像攝影、圖像處理方法中，主要可檢測 出龜曲處。 由第1缺陷檢查裝置14獲得之缺陷之信息與其位置信息 (例如位置座標）一起被相關聯地發送至控制裝置，可有助 144625.doc 201030695 於第1切斷裝置16之切斷方法。 (物切斷步驟（圖卜以七切斷步•第^斷裝置 16不切斷W脫模膜，而將貼合有該第⑽模膜之幻偏光 板與貼合於第i偏光板上之表面保護媒切斷為特定尺寸。 此時’在第1脫模膜與第i偏光板之間形成之黏著劑層既可 被切斷’亦可不被切斷。作為切斷機構’可201030695 VI. Description of the Invention: [Technical Field] The present invention relates to an optical display device manufacturing method and an optical display device manufacturing roll by bonding a polarizing plate to an optical display unit. Axis material. [Prior Art] As an example of a general polarizing plate, a double-sided protective polarizing plate in which a protective film of a polarizing element is bonded via an adhesive layer on both surfaces of a Φ polarizing film including a film-shaped polarizing element has been used. know. The polarizing film is formed by drying, for example, a polyvinyl alcohol (PVA) film, and a TAC (triacetate cellulose) film or the like is used as the polarizing element protective film. In recent years, in a liquid crystal display device or the like which is an example of a device using a polarizing plate, thinning and weight reduction are required, and a configuration in which the polarizing plate is made thinner and lighter is desired. Therefore, it is conceivable to omit one of the polarizing element protective films bonded to both surfaces of the polarizing film to form a single-sided protective φ-type polarizing plate, thereby achieving thinning and weight reduction of the polarizing plate. 4 is a cross-sectional view showing a configuration example of the single-sided protection type polarizing plate 52. In the polarizing plate 52, the surface protective film 51 is bonded to one surface thereof via the adhesive layer M, and the release film 53 is bonded to the other surface via the adhesive layer 55. As shown in Fig. 4, in the single-sided protection type polarizing plate 52, a polarizing element protective film 57 is bonded to at least the surface of the polarizing film 58 having the polarizing element opposite to the release film 53. As described above, the one-side protection type polarizing plate 52 has the polarizing element protective film 57 only on the surface opposite to the release film 53, so that the surface of the surface is asymmetric. Therefore, the polarizing plate 52 is warped toward the release film 53 side of the 144625.doc 201030695, and when it is bonded to a bonding object such as an optical display unit, the accuracy of the bonding position is deteriorated. Therefore, in the following Patent Document 1, there is proposed a technical solution in which a synthetic resin film having a specific property is controlled by attaching a specific tension and attached to a polarizing plate, thereby eliminating the polarizing plate until the bonding. Warping. [Problem to be Solved by the Invention] However, in the technique disclosed in the above-mentioned patent document, it is necessary to use a synthetic resin film having a characteristic property, and further, to fit In the case of the synthetic resin film, complicated control must be performed. Therefore, there is a problem that the manufacturing cost of the polarizing plate is high. Moreover, when the polarizing plate is corrected by the technique disclosed in the above patent document, the tensile stress is generated in the polarizing medium due to the high tension of the synthetic resin film, and the main cause of the peeling is The stress acts on the bonding surface with the optical display unit. In particular, when the polarizing plate is attached to the optical display unit while being warped toward the polarizing element protective film side (opposite side to Fig. 4), peeling tends to occur from the end portion. The present invention has been made in view of the above circumstances, and it is an object of the invention to provide an optical display device manufacturing method and an optical display device manufacturing reel material which are capable of effectively preventing peeling of a polarizing plate from an optical display unit with a simple configuration. [Means for Solving the Problems] The optical display device manufacturing method according to the first aspect of the present invention is characterized in that it is used for manufacturing an optical display by bonding a polarizing plate to an optical display unit. In the apparatus, the manufacturing method includes a transfer step of sequentially releasing a polarizing plate and a release film from a reel material, wherein the polarizing plate having the polarizing element protective film on the green surface is the inner side of the release film side When the winding is formed, the release film is bonded to the polarizing plate via the adhesive layer on the surface opposite to the polarizing element protective film; and the cutting step is performed successively from the reel material. The polarizing plate is cut into a specific size together with the release film or the release film, and a bonding step of bonding the polarizing plate to the optical display unit. According to this configuration, the single-sided protective polarizing plate having the property of warping toward the release film side is wound on the side of the release film side, whereby it can be made to face the release film side at the time of winding back. The state is maintained well. As a result, the polarizing plate is prevented from being peeled off from the bonding surface of the optical display unit by cutting the polarizing plate successively discharged from the reel material into a specific size and bonding it to the optical display unit. Therefore, it is possible to effectively prevent peeling of the polarizing plate with respect to the optical display unit by using a simple configuration in which the polarizing plate is wound with the release film side as the inner side. Further, since the polarizing plate is wound around the side of the adhesive layer, it is possible to prevent scratches (scratches on the surface) of the adhesive. Thereby, the mixing of the bubbles at the time of bonding due to the scratch of the adhesive can be prevented, and the steps of the autoclave treatment for eliminating the bubbles can be omitted. Further, by providing the polarizing element protective film on one surface of the polarizing plate - as compared with the polarizing plate in which the polarizing element protective film is provided on both surfaces, the manufacturing cost of the reel material can be reduced. In the optical display device manufacturing method according to the second aspect of the present invention, in the bonding step t', a specific tension is applied to the polarizing plate, and one surface is bonded to the optical display unit. According to this configuration; by applying a specific tension to the polarizing plate, the polarizing plate facing the release film side can be attached to the optical display unit in a straight stretched state. Thereby, the precision of the bonding position of the polarizing plate to the optical display unit can be improved. A reel material for manufacturing an optical display device according to a third aspect of the present invention is characterized in that the polarizing plate is formed by winding a polarizing plate, and the polarizing plate is cut into a specific size and bonded to the optical display unit. The polarizing plate having the polarizing element protective film on one side is formed by winding the side of the release film as an inner side, and the release film is opposite to the polarizing element protective film. The upper part is attached via the adhesive layer. According to this configuration, it is possible to provide a reel material for manufacturing an optical display device which exhibits the same effects as the optical display device manufacturing method according to the first aspect of the present invention. According to the present invention, the simple configuration of winding the polarizing plate with the release film side as the inner side can make the single-sided protection type polarizing plate having the property of facing the release film side bell to be retracted. The state in which the release film side is distorted is well maintained, so that peeling of the polarizing plate with respect to the optical display unit can be effectively prevented. In addition, since the polarizing plate is wound on the side of the release film as the inside, it can be satisfactorily held in the state of being warped toward the release film side during the winding back. Therefore, even when the polarizing plate passes the conveyance roller or the like. It also prevents the polarizing plate from peeling off from the release film during transportation. 144625.doc 201030695 [Embodiment] The embodiment of the present invention is described in terms of τ. *4: π & _u 1 糸 不 不 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 Fig. 9 is a flow chart of an example of the total * - 10,000. Fig. 2 is a diagram showing the manufacture of an optical display device. Outline of an example of the system (optical display unit) First, as the optical display device W' used in the optical display device manufactured by the present invention, for example, a liquid crystal cell substrate unit and an organic EL illuminator unit are exemplified. Wait. The optical display unit w is formed, for example, as a rectangle. (Polarizing Plate) The polarizing plate to be bonded to the optical display unit W of the optical display device manufactured by the present invention may be a polarizing film, a retardation film, a brightness enhancement film, or two or more of the films. A laminated film or the like is combined, but at least the above polarizing film is included. An adhesive layer is formed on one surface of the polarizing plate so as to be bonded to the optical display unit W, and a release medium for protecting the adhesive layer is provided. Further, on the other surface of the polarizing plate, a surface protective film is provided via an adhesive layer. The specific structure of these films will be described later. Hereinafter, a polarizing plate in which a surface protective film and a release film are laminated may be referred to as a sheet product. (Manufacturing Flowchart) (1) The first reel material preparation step (Fig. 1, S1). A first reel material formed by winding a strip-shaped first sheet product into a reel shape is prepared. The width of the first reel material depends on the fit size of the optical display unit w. (2) Transfer step (Fig. 1, S2: first transfer step). The first sheet material of the 144625.doc 201030695 is prepared and set to release the first sheet product 3〇 and transported to the downstream side. (3) The first inspection step (Fig. 1, S3). The defect of the first sheet product 30 is inspected using the first defect inspection device 14. As a method of inspecting the defect herein, there is a method of performing image capturing and image processing based on transmitted light and reflected light on both sides of the first sheet product, and arranging the polarizing film for inspection in A method of performing image capturing and image processing between a CCD camera and an inspection object such that a polarization axis (optical axis) of a polarizing plate to be inspected is orthogonally polarized (sometimes referred to as a twist) The inspection polarizing film is disposed between the CCD camera and the inspection object so as to have a specific angle with respect to the polarization axis of the polarizing plate to be inspected (for example, a range larger than the twist and within 10 degrees) (sometimes) A method of image capturing and image processing, which is called the intersection of twists. Further, the image processing algorithm can be applied to a known method, for example, the defect can be detected by the shading determination based on the binarization processing. In the image capturing and image processing method based on transmitted light, foreign matter inside the first sheet product 30 can be detected. In the image capturing and image processing method based on reflected light, the adhesion of the surface of the third sheet of the i-th sheet product can be detected. In the image capturing and image processing method based on the 0 degree intersection, surface foreign matter, dirt, internal foreign matter, and the like can be detected mainly as bright spots. In the image photography and image processing methods based on X-degree intersection, the tortoise is mainly detected. The information of the defect obtained by the first defect inspection device 14 is transmitted to the control device in association with its position information (e.g., position coordinates), which can assist the cutting method of the first cutting device 16 by 144625.doc 201030695. (The object cutting step (the drawing is performed by the seventh cutting step), the first breaking device 16 does not cut the W release film, and the magic polarizing plate to which the (10) film is bonded is bonded to the i-th polarizing plate. The surface protective medium is cut to a specific size. At this time, the adhesive layer formed between the first release film and the i-th polarizing plate may be cut off or cut off.
:置'切割機、其他之公知之切斷機構。較佳係構成:： 據第1缺陷檢查裝置14所獲得之缺陷之信息，以避開缺陷 之方式進行切斷。藉此，可大幅提高第】片材製品3〇之良 率。包含缺陷之第Μ材製品3G藉由第旧除裝置（未圖示） 被排除，而不會被黏貼在光學顯示單元w上。 較佳為，上述第！捲軸素材準備步驟、第丨檢查步驟、第 1切斷步驟係設為連續之製造線。在上述一系列之製造步 驟中，形成用於在光學顯示單元w之一個面上貼合之、被 切斷之第1偏光板.以下，對形成用於在光學顯示單元w 之另一個面上貼合之、被切斷之第2偏光板之步驟進行說 明。再者，分別形成該等被切斷之第丨偏光板以及第2偏光 板之步驟係平行地進行者。 (5) 第2捲軸素材準備步驟（圖i、su)。準備藉由將帶狀 之第2薄片製品捲成捲軸狀而形成之第2捲轴素材。第2捲 軸素材之寬度取決於光學顯示單元w之貼合尺寸，且例如 以與第1捲軸素材不同之寬度形成。 (6) 搬送步驟（圖1、S12:第2搬送步驟）。自所準備、設 置之第2捲軸素材陸續放出第2片材製品4〇，並搬送至下游[s ] 144625.doc -9- 201030695 侧0 (7) 第2檢查步驟（圖！、S13)。使用第2缺陷檢查裝置24檢 查第2片材製品40之缺陷。作為此處之缺陷檢查方法，與 上述第1缺陷檢查裝置14之方法同樣。然而，亦可以省略 第1檢查步驟（S3)以及第2檢查步驟（S13)。於此情形時，亦 可採用如下之構成，即，在製造第丨捲轴素材以及第2捲軸 素材之階段，進行第1片材製品3〇以及第2片材製品4〇之缺 陷檢查，使用事先進行了缺陷檢查之第丨捲軸素材以及第2 捲軸素材製造光學顯示裝置。 (8) 第2切斷步驟（圖1、S14:第2切斷步驟）。第1切斷裝 置26不切斷第2脫模膜，而將貼合有該第2脫模膜之第2偏 光板與貼合於第2偏光板上之表面保護膜切斷為特定尺 寸。此時，在第2脫模膜與第2偏光板之間形成之黏著劑層 既可被切斷，亦可不被切斷，作為切斷單元，可舉出例如 錯射裝置、切韻、其他之公知之切斷單元m係構成 為根據第2缺陷檢查裝置24所獲得之缺陷之信息，以避開 缺陷之方式進行切斷。藉此，可大幅提高第2片材製品40 之良率。包含缺陷之第2片材製品4〇藉由第2排除裝置（未 圖示）被排除，不會被黏貼在光學顯示單元诹上。 與分別形成上述被切斷之第丨偏光板以及第2偏光板之步 驟平行地進行搬送光學顯示單元w之㈣。在光學顯示單 元w之搬送中進行如下之處理。 (9)清洗步驟（圖〗、S6)。光學顯示單元w藉由研磨清 洗、水清洗而使其表面被清洗乾淨。 144625*doc •10· 201030695 • (10)第1偏光板貼合步驟（圖1、S5 :第1貼合步驟）。被切 斷之第1偏光板在除去第1脫模膜之後，使用第1貼合裝置 18經由黏著劑層而貼合在光學顯示單元W之一個面上。於 貼合時，將第1偏光板與光學顯示單元W用輥對夾住進行 壓接。再者，在該第1偏光板贴合步驟以及後述之第2偏光 板貼合步驟中，對第1偏光板及第2偏光板進行對位，以分 別搬送至預定之位置，然後貼合在光學顯示單元W上。然 ^ 而，偏光板之對位不僅限於在第1切斷步驟以及第2切斷步 驟之後進行之構成，亦可採用在第1切斷步驟以及第2切斷 步驟之前或者平行地進行之構成。 (11) 第2偏光板貼合步驟（圖1、S15 :第2貼合步驟）。被 切斷之第2偏光板在除去第2脫模膜之後，使用第2貼合裝 置28經由黏著劑層而貼合在光學顯示單元界之另一個面 上。於貼合時’將第2偏光板與光學顧示單元w用輥對夾 住進行壓接。再者，在將第2偏光板貼合在光學顯示單元 φ W上之前，利用旋轉機構20使貼合第1偏光板之後之光學 顯示單元W旋轉90度，以使第丨偏光板與第2偏光板成為正 交偏光關係。然而，不僅限於使光學顯示單元w旋轉9〇度 之構成’即使採用將第i片材製品3〇和第2片材4〇在互相正 父之方向上予以搬送之構成，亦可使第丨偏光板與第2偏光 板成為正交偏光關係。 (12) 光學顯不單元之檢查步驟（圖i、S16)。檢查裝置檢 查在兩面上貼合有偏光板之光學顯示單元w。作為檢查方 法已例不對光學顯示單元W之兩面進行基於透射光以及 144625.doc 201030695 反射光之圖像攝影、圖像處理之方法。又，作為其他之方 法，亦例示將檢查用偏光膜設置在CCD照相機與檢查對象 物之間之方法。再者，圖像處理之算法可適用公知之方 法，例如可藉由基於二值化處理之濃淡判定來檢測出缺 陷。 ' (13)根據檢查裝置所獲得之缺陷之信息，進行光學顯示 單元W之良品判定。被判定為良品之光學顯示單元;被: 送至接下來之安裝步驟。於被判定為不良品之情形時，實 施再加工處理，重新貼合偏光板，然後進行檢查，於被判 定為良品之情形時，進入安裝步驟，於被判定為不良品之 情形時’再次進行再加工處理或進行廢棄處理。 在上述一系列之製造步驟中，藉由使第丨偏光板之貼合 步驟與第2偏光板之貼合步驟成為連續之製造線，可較佳 地製造出光學顯示裝置。 在上述第1以及第2切斷步驟中，對不切斷脫模膜而切斷 片材製品之其他構件之方式（半切方式）進行了說明。根據 此種構成，可不切斷經由黏著劑層而貼合在偏光板上之脫 模膜，而切斷該偏光板以及黏著劑層，從而在對光學顯示 單元W之貼合處理之前才將脫模膜自偏光板剝離。亦即， 可没為作為偏光板之貼合面之黏著劑層直至快要貼合時才 露出之構成，因此，可防止異物混入偏光板之貼合面中。 尤其’藉由不切斷脫模膜而切斷偏光板以及黏著劑層， 從而可將脫模膜作為載體而搬送被切斷之偏光板以及黏著 劑層。因此，可使偏光板之搬送裝置之構成更加簡易，因 144625.doc 12 201030695 ' 此’可進—步降低光學顯示裝置之製造成本。然而，本發 月不僅限於將自捲轴素材陸續放出之片材製品留下脫模膜 而切斷之半切式之態樣’將脫模膜一起切斷之全切式之態 樣亦可適用於本發明中。 (片材製品之構成） 圖3係表示第1片材製品30以及第2片材製品40之構成例 之剖視圖。在本實施形態中，第【片材製品3〇以及第2片材 φ 製品40係藉由以同樣之態樣積層膜而形成，且分別藉由積 層保護膜31、偏光板32以及脫模膜33而形成。表面保護膜 31係在偏光板32之一個面上經由黏著劑層34而貼合，脫模 膜33係在偏光板32之另一個面上經由黏著劑層35而貼合。 然而，亦可省略表面保護膜3 i以及黏著劑層34。又，第i 片材製品30以及第2片材製品40不僅限於以同樣之態樣積 層膜者，亦可以不同之態樣積層膜者。例如，亦可為僅在 第1片材製品3 0以及第2片材製品4〇之任一者上形成有相位 ^ 差層之組合等。 圖3之例中’偏光板3 2包含偏光膜3 6、偏光元件保護膜 37以及塗層38，在偏光膜36之一個面上，經由接著劑層39 而接著偏光元件保護膜37，並且在偏光膜36之另一個面 上’形成有塗層38。又，有時亦省略上述塗層38。在偏光 元件保護膜37之與接著劑層39為相反側之面上，經由黏著 劑層34而貼合有表面保護膜31。又，在塗層38之與偏光膜 36為相反側之面上，經由黏著劑層35而貼合有脫模膜33。 在對光學顯示單元W之貼合時，藉由將脫模膜33剝離，形 144625.doc 13 201030695 成在脫模膜33上之黏著劑層35被轉印至偏光板32側，並經 由該黏著劑層35將偏光板32貼合至光學顯示單元w上。 偏光膜36包含薄膜狀之偏光元件（聚乙烯醇系薄膜），例 如係藉由將實施有染色.交聯以及拉伸處理之聚乙稀醇 (PVA)薄膜乾燥而獲得。偏光膜36之厚度較佳為2〇〜3〇〇 μπι ’ 更佳為 3 〇〜1 5 0 μηι。 就與黏著劑層35之密著以及偏光元件保護之觀點而言， 塗層38係在偏光膜36之與偏光元件保護膜37為相反側之面 j塗布而形成。塗層38雖無特別限定，但就密著之觀點而 舌，較佳為以聚乙稀醇、異氰酸酯、氰基丙烯酸酯、環乙 亞胺等為主要成分之接著劑。此時之塗層3 8之厚度較佳為 0.01=0 μηι，更佳為o.m卿。又，就偏光元件保護之觀 點：言，優選以環氧樹脂、環氧丙烧樹脂、聚氨基甲酸醋 樹月曰為主要成分之材料4時之塗㈣之厚度較佳為㈣ ’更佳為1 〇〜20 μπι。 偏光元件保護膜37例如包含TAC(三醋酸 ρ/τ(聚對苯二甲酸乙二偏光元件㈣==厚 定，但—般就強度或操作性等之作業性、薄 專之觀點而言’較佳為1〇〜25〇㈣， μηι 〇 υυ 表面保護膜3〗之目 作為表面保護膜3 i， 料’例如將塑料膜、 泡片材或金屬箔、該 的係防止偏光板32之劃傷、污染等。 例如可使用符合先前標準之適當之材 ，膠片材、紙、布、不織布、網、發 等之積層體等合適之薄片體根據需要 144625.doc 201030695 而用二氧化矽系或長鏈烷基系、氟系或硫化鉬等合適之剌 離劑進行塗層處理者。 與表面保護膜31同樣地，脫模膜33可使用符合先前標準 之適當之材料’例如將塑料膜、橡膠片材、紙、布、不織 布、網、發泡片材或金屬箔、該等之積層體等合適之薄片 體根據需要用二氧化矽系或長鏈烷基系、氟系或硫化鉬等 合適之剝離劑進行塗層處理者。在脫模膜33上，形成有包: Set 'cutting machine, other well-known cutting mechanism. Preferably, the cutting is performed so as to avoid the defect based on the information of the defect obtained by the first defect inspection device 14. Thereby, the yield of the third sheet product can be greatly improved. The third coffin article 3G containing the defect is removed by the first removing device (not shown) without being attached to the optical display unit w. Preferably, the above! The reel material preparation step, the second inspection step, and the first cutting step are set as continuous manufacturing lines. In the above-described series of manufacturing steps, a first polarizing plate for being bonded to one surface of the optical display unit w is formed. Hereinafter, the pair is formed on the other surface of the optical display unit w. The step of bonding the cut second polarizing plate will be described. Further, the steps of forming the cut second polarizing plate and the second polarizing plate, respectively, are performed in parallel. (5) The second reel material preparation step (Fig. i, su). A second reel material formed by winding a strip-shaped second sheet product into a reel shape is prepared. Volume 2 The width of the shaft material depends on the bonding size of the optical display unit w, and is formed, for example, by a width different from that of the first reel material. (6) Transfer step (Fig. 1, S12: second transfer step). The second sheet material is continuously discharged from the second reel material prepared and set, and conveyed to the downstream [s] 144625.doc -9- 201030695 side 0 (7) Second inspection step (Fig.!, S13). The defect of the second sheet product 40 is inspected using the second defect inspection device 24. The defect inspection method herein is the same as the method of the first defect inspection device 14 described above. However, the first inspection step (S3) and the second inspection step (S13) may be omitted. In this case, a defect inspection of the first sheet product 3〇 and the second sheet product 4〇 may be performed at the stage of manufacturing the second reel material and the second reel material. The second scroll material and the second scroll material manufacturing optical display device which have been subjected to defect inspection in advance. (8) Second cutting step (Fig. 1, S14: second cutting step). The first cutting device 26 cuts the second polarizing film to which the second release film is bonded and the surface protective film bonded to the second polarizing plate to a specific size without cutting the second release film. In this case, the adhesive layer formed between the second release film and the second polarizing plate may be cut or not cut, and examples of the cutting unit include a misalignment device, a rhyme, and the like. The known cutting unit m is configured to cut off in accordance with the defect information obtained by the second defect inspection device 24 so as to avoid the defect. Thereby, the yield of the second sheet product 40 can be greatly improved. The second sheet product 4 including the defect is removed by the second removing means (not shown) and is not adhered to the optical display unit. (4) The optical display unit w is transported in parallel with the steps of forming the cut second polarizing plate and the second polarizing plate, respectively. The following processing is performed in the conveyance of the optical display unit w. (9) Cleaning steps (Fig., S6). The optical display unit w is cleaned by polishing, water washing. 144625*doc •10· 201030695 • (10) First polarizing plate bonding step (Fig. 1, S5: first bonding step). After the first polarizing film is removed, the first polarizing film is bonded to one surface of the optical display unit W via the adhesive layer using the first bonding apparatus 18. At the time of bonding, the first polarizing plate and the optical display unit W are sandwiched by a pair of rollers and pressure-bonded. In the first polarizing plate bonding step and the second polarizing plate bonding step to be described later, the first polarizing plate and the second polarizing plate are aligned, respectively, and transported to a predetermined position, and then bonded to each other. On the optical display unit W. However, the alignment of the polarizing plate is not limited to the configuration performed after the first cutting step and the second cutting step, and may be performed before or after the first cutting step and the second cutting step. . (11) Second polarizing plate bonding step (Fig. 1, S15: second bonding step). The second polarizing plate that has been cut is attached to the other surface of the optical display unit boundary via the adhesive layer by the second bonding device 28 after the second release film is removed. At the time of bonding, the second polarizing plate and the optical sensor unit w are sandwiched by a pair of rollers to be pressure-bonded. Further, before the second polarizing plate is bonded to the optical display unit φ W, the optical display unit W after the first polarizing plate is bonded is rotated by 90 degrees by the rotating mechanism 20 to make the second polarizing plate and the second polarizing plate The polarizing plate becomes an orthogonal polarization relationship. However, it is not limited to the configuration in which the optical display unit w is rotated by 9 degrees. Even if the ith sheet product 3 〇 and the second sheet 4 are transported in the direction of the parent to the parent, the third 亦可 can be made. The polarizing plate and the second polarizing plate have an orthogonal polarization relationship. (12) Inspection procedure for optical display unit (Fig. i, S16). The inspection device inspects the optical display unit w to which the polarizing plate is attached on both sides. As an inspection method, there has been no method of performing image capturing and image processing based on transmitted light and 144625.doc 201030695 reflected light on both sides of the optical display unit W. Further, as another method, a method of providing a polarizing film for inspection between a CCD camera and an inspection object is also exemplified. Further, the image processing algorithm can be applied to a known method, and for example, the defect can be detected by the shading determination based on the binarization processing. (13) The quality judgment of the optical display unit W is performed based on the information of the defect obtained by the inspection device. The optical display unit judged to be a good product; is: sent to the next installation step. When it is determined to be a defective product, the reworking process is performed, the polarizing plate is reattached, and then the inspection is performed. When it is judged to be a good product, the mounting step is entered, and when it is determined to be a defective product, 're-run Reprocessing or disposal. In the above-described series of manufacturing steps, the optical display device can be preferably manufactured by forming the bonding step of the second polarizing plate and the bonding step of the second polarizing plate into a continuous manufacturing line. In the first and second cutting steps, the method of cutting the other members of the sheet product without cutting the release film (half-cut method) has been described. According to this configuration, the release film and the adhesive layer which are bonded to the polarizing plate via the adhesive layer can be cut, and the polarizing plate and the adhesive layer can be cut off before being attached to the optical display unit W. The film was peeled off from the polarizing plate. In other words, the adhesive layer which is the bonding surface of the polarizing plate is not exposed until it is bonded, so that foreign matter can be prevented from entering the bonding surface of the polarizing plate. In particular, the polarizing plate and the adhesive layer are cut by not cutting the release film, whereby the release film and the adhesive layer can be conveyed by using the release film as a carrier. Therefore, the configuration of the transfer device of the polarizing plate can be made simpler, and the manufacturing cost of the optical display device can be further reduced by the method of 144625.doc 12 201030695 'this. However, this month is not limited to the half-cut type in which the sheet material discharged from the reel material is left to be released from the release film, and the full-cut type in which the release film is cut together may also be applied. In the present invention. (Structure of Sheet Product) Fig. 3 is a cross-sectional view showing a configuration example of the first sheet product 30 and the second sheet product 40. In the present embodiment, the "sheet product 3" and the second sheet φ product 40 are formed by laminating the film in the same manner, and are respectively provided by the laminated protective film 31, the polarizing plate 32, and the release film. Formed by 33. The surface protective film 31 is bonded to one surface of the polarizing plate 32 via the adhesive layer 34, and the release film 33 is bonded to the other surface of the polarizing plate 32 via the adhesive layer 35. However, the surface protective film 3 i and the adhesive layer 34 may also be omitted. Further, the i-th sheet product 30 and the second sheet product 40 are not limited to those laminated in the same manner, and may be laminated in different manners. For example, a combination of phase difference layers or the like may be formed only on either of the first sheet product 30 and the second sheet product 4A. In the example of FIG. 3, the polarizing plate 3 2 includes a polarizing film 36, a polarizing element protective film 37, and a coating layer 38, and on one surface of the polarizing film 36, the polarizing element protective film 37 is followed by the adhesive layer 39, and The other side of the polarizing film 36 is formed with a coating 38. Further, the above-described coating layer 38 may be omitted. The surface protective film 31 is bonded to the surface of the polarizing element protective film 37 on the side opposite to the adhesive layer 39 via the adhesive layer 34. Further, on the surface of the coating layer 38 opposite to the polarizing film 36, the release film 33 is bonded via the adhesive layer 35. When the optical display unit W is bonded, the adhesive layer 35 on the release film 33 is transferred to the side of the polarizing plate 32 by peeling off the release film 33, and is passed through the 144625.doc 13 201030695 The adhesive layer 35 bonds the polarizing plate 32 to the optical display unit w. The polarizing film 36 includes a film-shaped polarizing element (polyvinyl alcohol-based film), and is obtained, for example, by drying a polyethylene glycol (PVA) film subjected to dyeing, crosslinking, and stretching treatment. The thickness of the polarizing film 36 is preferably 2 〇 to 3 〇〇 μπι ‘ more preferably 3 〇 to 1 50 μm. The coating layer 38 is formed by coating the surface of the polarizing film 36 opposite to the polarizing element protective film 37 from the viewpoint of adhesion to the adhesive layer 35 and protection of the polarizing element. Although the coating layer 38 is not particularly limited, it is preferably an adhesive containing polyethylene glycol, isocyanate, cyanoacrylate or ethyleneimine as a main component from the viewpoint of adhesion. The thickness of the coating 38 at this time is preferably 0.01 = 0 μηι, more preferably o.m. Further, in view of the protection of the polarizing element, it is preferable that the thickness of the coating (4) of the material 4 which is mainly composed of an epoxy resin, a propylene-acrylic resin, and a polyurethane sulfonate is preferably (4) 'better 1 〇~20 μπι. The polarizing element protective film 37 includes, for example, TAC (triacetic acid ρ/τ (polyethylene terephthalate polarizing element (4) == thick, but generally, in terms of workability and thinness of strength, workability, etc.' Preferably, the surface of the surface protective film 3 is used as the surface protective film 3 i, for example, a plastic film, a foam sheet or a metal foil, and the like prevents the polarizing plate 32 from being scratched. Injury, pollution, etc. For example, suitable materials conforming to the previous standards may be used, and suitable sheets such as film, paper, cloth, non-woven fabric, mesh, hair, etc. may be used with cerium oxide according to the need of 144625.doc 201030695 or A suitable deioning agent such as a long-chain alkyl group, a fluorine-based or a molybdenum sulfide is subjected to a coating treatment. Similarly to the surface protective film 31, the release film 33 may be made of a suitable material conforming to the previous standard 'for example, a plastic film, A suitable sheet such as a rubber sheet, paper, cloth, non-woven fabric, net, foamed sheet or metal foil, or the like, or the like, such as a cerium oxide or a long-chain alkyl group, a fluorine-based or a molybdenum sulfide, etc., if necessary Suitable stripper for coating treatment. a release film 33 is formed with a package
含比在表面保護膜31上形成之黏著劑層34之黏著力更強之 強黏著劑之黏著劑層3 5。 偏光板32之構成不僅限於偏光膜36、偏光元件保護膜37 以及塗層38，亦可採用積層可賦予相位差膜或亮度提高薄 膜等之光學功能之其他層（薄膜）之構成。 在圖3所示之例中，偏光板32係僅在單面具有偏光元件 保”蒦膜3 7，且在與偏光元件保護膜3 7為相反側之面上經由 黏著劑層35而貼合有脫模膜33之單㈣護型，表背面之構 成呈非對稱，因此，如圖3所示，具有朝向脫模膜33側魅 曲之性質。 本實施形中’藉由將如上所述之片材製品以脫 模膜33側為_捲繞’從而形成第ι捲轴素材和第2捲轴素 材(捲轴素材製造步驟)。更具體而言，藉由以具有特定直 禮之捲怒為中心將片奸制 月材製口〇 30 ' 40用特定之張力捲繞，從 而製造第1捲轴素材和第2捲軸素材。 更佳為150 mm以上。若 ’因此有可能會產生脫 上述捲芯之外徑為70 mm以上， 該捲芯、之外徑過小，則曲率會變大 144625.doc 201030695 向脫模膜3 3側麵曲過大而 。另一方面’捲繞後之捲 模膜3 3浮起等外觀上之問題，或 使貼合變得困難之作業上之問題 軸素材之外徑存在上限，因此，若捲&之外徑過大，則可 捲繞至捲芯上之片材製品3〇、4〇之長度會變短。因此，捲 芯之外徑較佳為如上所述之值。 將片材製品30、40捲繞後之捲軸素材之外徑（捲徑）為 1500 mm以下，更佳為1〇〇〇 mm以下。若捲徑過大則片 材製品30、40之最外周部分之曲率會變小，捲回時無法以 向脫模膜33側翹曲之狀態而良好地予以保持，因此，捲徑 較佳為如上所述之值。 捲繞至捲芯時施加至片材製品3〇、4〇之張力（纏繞張力： 為50 N/m以上，更佳為1〇〇 N/m以上。若張力過小，則無 法對捲芯良好地捲回，而且，將片材製品3〇、4〇捲回時， 無法以向脫模膜33側翹曲之狀態而良好地予以保持，因 此，張力較佳為如上所述之值。 本貫施形態中，藉由將具有朝向脫模膜33側翹曲之性質 之單面保護型偏光板32以脫模膜33側作為内側捲繞，從而 在捲回時可以向脫模膜33側翹曲之狀態而良好地予以保 持。藉此’在將自捲軸素材陸續放出之偏光板32切斷為特 定尺寸並貼合於光學顯示單元W之狀態下，可防止偏光板 32自光學顯示單元W之貼合面剝離。因此，藉由以脫模膜 33側作為内側將偏光板32捲繞之簡單構成，便可有效地防 止偏光板32相對於光學顯示單元W之剝離。 又’由於偏光板3 2係以黏著劑層3 5側為内側而捲繞，因 144625.doc •16- 201030695 ' 此，可防止黏著劑之劃痕（表面之劃傷）。藉此，可防止因 黏著劑之劃痕導致貼合時有氣泡混入，並且，可省略用於 消除氣泡之尚壓爸（aut〇ciave)處理等步驟。 在自上述捲軸素材陸續放出偏光板32而貼合在光學顯示 單凡w上時’較佳為一面對偏光板32施加特定張力一面進 行貼合，但不僅限於此種構成，本發明亦可適用於不施加 張力地進行貼合之構成。在對偏光板32施加特定之張力之 φ 情形時，可將朝向脫模膜33側翹曲之偏光板32以筆直地延 長之狀態而貼合在光學顯示單元W上。藉此，可提高偏光 板32對光學顯示單元w之貼合位置之精度。 又’本實施形態中，採用了半切方式，即，不切斷經由 黏著劑層35而貼合在偏光板32上之脫模膜33，而將該偏光 板32以及黏著劑層35切斷，從而在對光學顯示單元w之貼 合處理之前才自偏光板32剝離脫模膜33，但藉由如上所述 般將偏光板32以脫模膜33側作為内側而捲繞，可防止搬送 • 中偏光板32自脫模膜33剝離。亦即，在偏光板32捲回時可 以向脫模膜33側翹曲之狀態良好地予以保持，因此，即使 在偏光板32通過搬送輥等時，亦可防止被半切之偏光板32 之端部自脫模膜33剝離。 以下’對藉由將多種偏光板分別貼合在玻璃板上，並確 認此時之貼合位置之偏差以及端面剝離之有無而進行之測 試結果進行說明。該測試中，將A4大小之偏光板之樣品貼 合在比其更大之玻璃板上之後，確認貼合位置之偏差以及 端面剝離之有無。關於貼合位置之偏差，係藉由計算N = 144625.doc 201030695 1 0中之3σ(σ為測量值之標準偏差）而測出。另一方面，關 於端面剝離之有無，係藉由下述步驟而進行，即：在高溫 標準濕度氣體環境（60°C )以及高溫高濕度氣體環境 (60°C/95% RH)之各環境下放置1000小時後取出，觀察端 面之剝離，僅在有超過0.5 mm之剝離之情形時判斷為有剝 離。測試結果如下述表1以及表2所示。 [表1] 偏光板 構成 捲 麵曲量 (mm) 貼合張力 (N/m) 端面剝離 60°C 60〇C/95%RH 實施例1 單面保護 内 -80 50 無剝離 無剝離 實施例2 單面保護 内 -80 350 無剝離 無剝離 實施例3 單面保護 内 -80 500 無剝離 無剝離 實施例4 單面保護 内 -80 30 無剝離 無剝離 比較例1 單面保護 外 -20 350 有剝離 有剝離 比較例2 雙面保護 内 -10 350 有剝離 有剝離 [表2] 偏光板 構成 捲 勉曲量 (mm) 貼合張力 (N/m) 貼合位置 偏差 實施例1 單面保護 内 -80 50 士1 實施例2 單面保護 内 -80 350 ±1 實施例3 單面保護 内 -80 500 ±1 實施例4 單面保護 内 -80 30 ±2 (實施例1) 在實施例1中，自藉由將脫模膜側作為内側捲繞而形成 之捲軸素材中，切出僅在偏光膜之單面貼合有偏光元件保 護膜之單面保護型偏光板，一面對該偏光板施加50 N/m之 張力，一面貼合在光學顯示單元上。被切出時之偏光板向 脫模膜側之翹曲量為8 0 mm。在該實施例1中，貼合位置之 偏差非常小，為士1 mm左右。又，關於端面剝離，確認在 144625.doc -18 - 201030695 任何環境下均無剝離。 (實施例2)The adhesive layer 35 of a strong adhesive having a stronger adhesive force than the adhesive layer 34 formed on the surface protective film 31. The configuration of the polarizing plate 32 is not limited to the polarizing film 36, the polarizing element protective film 37, and the coating layer 38, and may be formed by laminating another layer (film) capable of imparting an optical function such as a retardation film or a brightness enhancement film. In the example shown in FIG. 3, the polarizing plate 32 has a polarizing element-protecting film only on one surface, and is bonded via the adhesive layer 35 on the surface opposite to the polarizing element protective film 37. There is a single (four) protection type of the release film 33, and the front and back sides are asymmetric in configuration, and therefore, as shown in FIG. 3, it has a property of facing the release film 33 side. In the present embodiment, The sheet product is _wound on the release film 33 side to form the first yoke material and the second reel material (reel material manufacturing step). More specifically, by having a specific ritual roll The anger is centered on the squid, and the squid 30' 40 is wound with a specific tension to make the first reel material and the second reel material. More preferably 150 mm or more. The outer diameter of the core is 70 mm or more, and if the outer diameter of the core is too small, the curvature becomes large 144625.doc 201030695 is bent to the side of the release film 33. On the other hand, the volume after winding The problem of appearance such as floating of the film 3 3 or the problem of the work which makes the bonding difficult is the outer diameter of the shaft material. Therefore, if the outer diameter of the roll & is too large, the length of the sheet product 3〇, 4〇 which can be wound onto the core will be shortened. Therefore, the outer diameter of the core is preferably as described above. The outer diameter (winding diameter) of the reel material after winding the sheet products 30 and 40 is 1500 mm or less, more preferably 1 mm or less. If the winding diameter is too large, the sheet products 30 and 40 are the most. The curvature of the outer peripheral portion is small, and it cannot be satisfactorily held in a state of being warped toward the release film 33 side during winding. Therefore, the winding diameter is preferably a value as described above. The tension of the sheet product 3〇, 4〇 (winding tension: 50 N/m or more, more preferably 1〇〇N/m or more. If the tension is too small, the winding core cannot be wound well, and the sheet is not When the material is wound up at 3 〇 and 4 ,, it cannot be satisfactorily held in a state of being warped toward the release film 33 side. Therefore, the tension is preferably a value as described above. The one-side protection type polarizing plate 32 having the property of being warped toward the release film 33 side is wound as the inner side of the release film 33 side, so that it can be wound back The state in which the release film 33 is warped is favorably held. This prevents the polarizing plate from being cut in a state in which the polarizing plate 32 which is successively discharged from the reel material is cut into a specific size and bonded to the optical display unit W. 32 is peeled off from the bonding surface of the optical display unit W. Therefore, by the simple configuration of winding the polarizing plate 32 with the release film 33 side as the inner side, the peeling of the polarizing plate 32 with respect to the optical display unit W can be effectively prevented. 'Because the polarizing plate 3 2 is wound with the adhesive layer 3 5 side inside, because 144625.doc •16- 201030695 ', it can prevent the scratch of the adhesive (scratch of the surface). It is possible to prevent air bubbles from being mixed during the bonding due to scratches of the adhesive, and the steps of aut〇ciave treatment for eliminating the bubbles can be omitted. When the polarizing plate 32 is successively discharged from the above-mentioned reel material and attached to the optical display unit w, it is preferable to apply a specific tension to the polarizing plate 32, but the present invention is not limited to this configuration. It is suitable for the constitution of bonding without applying tension. When a specific tension φ is applied to the polarizing plate 32, the polarizing plate 32 which is warped toward the release film 33 side can be attached to the optical display unit W in a straight state. Thereby, the accuracy of the bonding position of the polarizing plate 32 to the optical display unit w can be improved. In the present embodiment, the half-cut method is employed, that is, the release film 33 bonded to the polarizing plate 32 via the adhesive layer 35 is not cut, and the polarizing plate 32 and the adhesive layer 35 are cut. Therefore, the release film 33 is peeled off from the polarizing plate 32 before the bonding process of the optical display unit w, but the polarizing plate 32 is wound around the side of the release film 33 as described above, thereby preventing the conveyance. The medium polarizing plate 32 is peeled off from the release film 33. In other words, when the polarizing plate 32 is wound up, it can be favorably held in a state of being warped toward the release film 33. Therefore, even when the polarizing plate 32 passes through a conveying roller or the like, the end of the half-cut polarizing plate 32 can be prevented. The portion is peeled off from the release film 33. The following is a description of the test results obtained by laminating a plurality of kinds of polarizing plates on a glass plate and confirming the difference in the bonding position at this time and the presence or absence of the end face peeling. In this test, after the sample of the A4 size polarizing plate was attached to a larger glass plate, the deviation of the bonding position and the presence or absence of the end face peeling were confirmed. The deviation of the bonding position is measured by calculating 3σ (σ is the standard deviation of the measured value) in N = 144625.doc 201030695 1 0. On the other hand, the presence or absence of the end face peeling is performed by the following steps: in a high temperature standard humidity gas environment (60 ° C) and a high temperature and high humidity gas environment (60 ° C / 95% RH). After being left for 1000 hours, it was taken out, and the peeling of the end surface was observed, and it was judged that peeling was performed only in the case of peeling of more than 0.5 mm. The test results are shown in Table 1 and Table 2 below. [Table 1] Polarizing plate constitutes curl curvature (mm) Bonding tension (N/m) End peeling 60 ° C 60 〇 C / 95% RH Example 1 Single-sided protection - 80 50 No peeling and no peeling Example 2 Single-sided protection inside -80 350 No peeling and no peeling Example 3 Single-sided protection inside -80 500 No peeling and no peeling Example 4 Single-sided protection inside -80 30 No peeling and no peeling Comparative example 1 Single-sided protection outside-20 350 Peeling and peeling Comparative example 2 Double-sided protection -10 350 Peeling and peeling [Table 2] Polarizing plate to form the curl amount (mm) Lamination tension (N/m) Bonding position deviation Example 1 Single-sided protection Inner-80 50 ± 1 Example 2 Single-sided protection - 80 350 ± 1 Example 3 Single-sided protection - 80 500 ± 1 Example 4 Single-sided protection - 80 30 ± 2 (Example 1) In the example In the first embodiment, the single-sided protective polarizing plate in which the polarizing element protective film is bonded to one surface of the polarizing film is cut out from the reel material formed by winding the release film side as the inner side. The polarizing plate was applied with a tension of 50 N/m and attached to the optical display unit. The amount of warpage of the polarizing plate toward the release film side when cut out was 80 mm. In the first embodiment, the deviation of the bonding position is very small, and is about 1 mm. Further, regarding the end face peeling, it was confirmed that there was no peeling in any environment of 144625.doc -18 - 201030695. (Example 2)
在實施例2中，自藉由將脫模膜側作為内側捲繞而形成 之捲轴素材中’切出僅在偏光膜之單面貼合有偏光元件保 護膜之單面保護型偏光板，一面對該偏光板施加350 N/m 之張力’ 一面貼合在光學顯示單元上。被切出時之偏光板 向脫模膜側之翹曲量為8〇 mm。在該實施例2中，貼合位置 之偏差非常小，為士1 mm左右。又，關於端面剝離，確認 在任何環境下均無剝離。 (實施例3) 在實施例3中，自藉由將脫模膜側作為内側捲繞而形成 之捲轴素材中’切出僅在偏光膜之單面貼合有偏光元件保 護膜之單面保護型偏光板，一面對該偏光板施加500 N/m 之張力’一面貼合在光學顯示單元上。被切出時之偏光板 向脫模膜側之魅曲量為80 mm。在該實施例3中，貼合位置 之偏差非常小，為±1 mm左右。又，關於端面剝離，確認 在任何環境下均無剝離。 (實施例4) 在實施例4中，自藉由將脫模膜侧作為内側捲繞而形成 之捲軸素材中，切出僅在偏光膜之單面貼合有偏光元件保 護膜之單面保護型偏光板，一面對該偏光板施加30 N/m之 張力’ 一面貼合在光學顯示單元上。被切出時之偏光板向 脫模膜側之翹曲量為8〇 mm。在該實施例4中，貼合位置之 偏差非常小’為±2 mm左右。又，關於端面剝離，確認在i S 1 144625.doc -19- 201030695 任何環境下均無剝離。 (比較例1) 在比較例1中，自藉由將脫模膜側作為外侧捲繞而形成 之捲轴素材中’切出僅在偏光膜之單面貼合有偏光元件保 護膜之單面保護型偏光板，一面對該偏光板施加350 N/m 之張力’ 一面貼合在光學顯示單元上。被切出時之偏光板 向脫模膜側之翹曲量為2〇 mm。在該比較例1中，關於端面 剝離，確認在任何環境下均有剝離。 (比較例2) 在比較例2中’自藉由將脫模膜侧作為内側捲繞而形成 之捲轴素材中’切出在偏光膜之兩面貼合有偏光元件保護 膜之雙面保護型偏光板，一面對該偏光板施加35〇 N/m之 張力，一面貼合在光學顯示單元上。被切出時之偏光板向 脫模膜側之翹曲量為10 mm。在該比較例2中，關於端面剝 離’確認在任何環境下均有剝離。 再者，作為參考例’自藉由將脫模膜側作為内側捲繞而 形成之捲轴素材中，切出僅在偏光膜之單面貼合有偏光元 件保護膜之單面保護型偏光板，一面對該偏光板施加6〇〇 N/m之張力，一面貼合在光學顯示單元上。於此情形時， 結果導致偏光板發生斷裂。 根據如上所述之測試結果，就端面剝離之觀點而言，與 /雙面保護型相比，更佳為使用單面保護型之偏光板，與將 脫模膜側作為外侧捲繞之情形相比，較佳為將單面保護型 之偏光板以脫模膜侧作為内側捲繞。又，對光學顯示單元 144625.doc •20· 201030695 之貼合時施加至偏光板之張力若為3〇〜5〇〇 N/m，則可提高 偏光板對光學顯示單元之貼合位置之精度，若上述張力為 5〇〜500 N/m，則可進一步提高偏光板對光學顯示單元之 合位置之精度。 ' 【圖式簡單說明】 圖1係表示本發明 法之一例之流程圖； 之一實施形態之光學顯示裝置製造方In the second embodiment, a single-sided protective polarizing plate in which a polarizing element protective film is bonded to only one surface of a polarizing film is cut out from a reel material formed by winding the release film side as an inner side. A polarizing plate of 350 N/m was applied to the polarizing plate while being attached to the optical display unit. The amount of warpage of the polarizing plate to the release film side when the film was cut out was 8 mm. In the second embodiment, the deviation of the bonding position is very small, which is about 1 mm. Further, regarding the end face peeling, it was confirmed that there was no peeling under any circumstances. (Example 3) In Example 3, one side of the reel material formed by winding the release film side as the inside was cut out, and only one side of the polarizing film was bonded to one side of the polarizing film. The protective polarizing plate is attached to the optical display unit while applying a tension of 500 N/m to the polarizing plate. When the polarizing plate was cut out, the amount of fascination to the release film side was 80 mm. In the third embodiment, the deviation of the bonding position is very small, being about ±1 mm. Further, regarding the end face peeling, it was confirmed that there was no peeling under any circumstances. (Example 4) In Example 4, the one-side protection in which the polarizing element protective film was bonded to only one side of the polarizing film was cut out from the reel material formed by winding the release film side as the inside. The polarizing plate is applied to the optical display unit while applying a tension of 30 N/m to the polarizing plate. The amount of warpage of the polarizing plate to the release film side when the film was cut out was 8 mm. In this embodiment 4, the deviation of the bonding position is very small 'about ± 2 mm. Further, regarding the end face peeling, it was confirmed that there was no peeling in any environment of i S 1 144625.doc -19- 201030695. (Comparative Example 1) In the comparative example 1, the one side of the reel material formed by winding the release film side as the outer side is cut out, and only one side of the polarizing film is bonded to one side of the polarizing film. The protective polarizing plate is attached to the optical display unit while applying a tension of 350 N/m to the polarizing plate. The amount of warpage of the polarizing plate to the release film side when the film was cut out was 2 mm. In Comparative Example 1, it was confirmed that peeling was observed in any environment with respect to the end surface peeling. (Comparative Example 2) In Comparative Example 2, the double-sided protective type in which the polarizing element protective film was bonded to both surfaces of the polarizing film was cut out from the reel material formed by winding the release film side as the inside. The polarizing plate was applied to the optical display unit while applying a tension of 35 〇N/m to the polarizing plate. The amount of warpage of the polarizing plate toward the release film side when the film was cut out was 10 mm. In Comparative Example 2, it was confirmed that the end surface peeling was peeled off in any environment. In addition, as a reference example, a single-sided protective polarizing plate in which a polarizing element protective film is bonded to only one surface of a polarizing film is cut out from a reel material formed by winding a release film side as an inner side. While applying a tension of 6 〇〇N/m to the polarizing plate, it is attached to the optical display unit. In this case, the result is that the polarizing plate is broken. According to the test results as described above, in terms of the end face peeling, it is more preferable to use the one-side protection type polarizing plate as compared with the double-sided protection type, and the case where the release film side is wound as the outer side. Preferably, the one-side protection type polarizing plate is wound around the release film side as the inner side. Moreover, if the tension applied to the polarizing plate at the time of bonding the optical display unit 144625.doc •20·201030695 is 3〇~5〇〇N/m, the precision of the bonding position of the polarizing plate to the optical display unit can be improved. If the tension is 5 〇 to 500 N/m, the accuracy of the position of the polarizing plate to the optical display unit can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flow chart showing an example of the method of the present invention;
圖2係表 圖3係表 視圖；及 示光學顯示裝置之製造系統之一例之概略圖； 示第1片材製品以及第2片材製品之構成例之 剖 圖4係表示單面保護型之偏光板之構成例 【主要元件符號說明】 之剖視圖 31 32 33 表面保護膜 偏光板 脫模膜2 is a schematic view showing an example of a manufacturing system of the optical display device; and FIG. 4 showing a configuration example of the first sheet product and the second sheet product, which is a single-sided protection type. Configuration example of polarizing plate [Description of main component symbols] Cross-sectional view 31 32 33 Surface protective film polarizing plate release film
34 35 36 37 38 39 黏著劑層 黏著劑層 偏光膜 偏光元件保護膜 塗層 接著劑層 144625.doc •21 ·34 35 36 37 38 39 Adhesive layer Adhesive layer Polarizing film Polarizing element protective film Coating Adhesive layer 144625.doc •21 ·