TW201721250A - Peeling method - Google Patents

Abstract

A stripping method for stripping a polarizing plate from a laminate, including: stripping a surface protective film from the polarizing plate to bond an adhesive tape to the polarizing plate; bonding the adhesive tape to an outer surface on the opposite side of the polarizing plate from the substrate so as to place the adhesive tape at least along two edges constituting a corner out of the four edges of the polarizing plate; bonding the surface protective film over the adhesive tape; and stripping the polarizing plate with the surface protective film and the adhesive tape from the corner serving as a stripping starting point.

Description

剝離方法Peeling method

本發明是有關於一種從積層體剝離偏光板的剝離方法。The present invention relates to a peeling method for peeling a polarizing plate from a laminate.

以往，適用於稱為液晶顯示面板或有機EL顯示面板之圖像顯示裝置之圖像顯示部的面板，是使用具備由硬質玻璃板等形成之基板、及黏附於該基板之至少其中一面之偏光板（偏光膜）者。在流通階段中，前述面板是以具有該面板、及可剝離地黏附於偏光板上之表面保護薄膜的積層體之狀態流通。Conventionally, a panel applied to an image display unit of an image display device called a liquid crystal display panel or an organic EL display panel uses a substrate including a hard glass plate or the like and a polarized film adhered to at least one side of the substrate. Plate (polarizing film). In the circulation stage, the panel is in a state of being laminated with the laminate and the surface protective film which is peelably adhered to the polarizing plate.

此種積層體是藉由例如偏光板透過接著劑黏附於基板，並且表面保護薄膜透過接著力比前述接著劑小且可剝離的接著劑黏附於該偏光板上而製造，並在製造後檢査。該檢査中，有時候會發現已黏附之偏光板有髒汙或破損、空氣或異物混入該偏光板與基板之間等的問題。若如此發現有問題時，則將偏光板與表面保護薄膜一起從積層體剝離，並將藉由該剝離而得到的基板再利用於製造另外的積層體。如此剝離偏光板一般是稱為再製(rewok)。Such a laminate is produced by, for example, adhering a polarizing plate through an adhesive to a substrate, and the surface protective film is adhered to the polarizing plate by an adhesive having a smaller adhesive force than the adhesive, and is inspected after manufacture. In this inspection, sometimes the adhered polarizing plate is found to be dirty or damaged, and air or foreign matter is mixed between the polarizing plate and the substrate. When the problem is found in this way, the polarizing plate is peeled off from the laminated body together with the surface protective film, and the substrate obtained by the peeling is reused to produce another laminated body. Such stripping of the polarizing plate is generally referred to as rewok.

然而，如此從積層體剝離偏光板時，在剝離時，有時候偏光板會破裂（斷裂），其一部分殘留於基板上。However, when the polarizing plate is peeled off from the laminated body as described above, sometimes the polarizing plate is broken (broken) at the time of peeling, and a part thereof remains on the substrate.

因此，提出一種抑制膜的斷裂並從積層體剝離該膜的方法。 例如，提出一種方法，該方法是從具備有基板、及黏附於該基板且容易斷裂之膜的積層體將該膜剝離，將黏著片貼附於該容易斷裂之膜的整面，並將該膜與該黏著片一起剝離（參照專利文獻1）。 先行技術文獻 專利文獻Therefore, a method of suppressing breakage of a film and peeling the film from the laminate is proposed. For example, a method is proposed in which a film is peeled off from a laminate including a substrate and a film which is adhered to the substrate and is easily broken, and the adhesive sheet is attached to the entire surface of the film which is easily broken, and the film is attached thereto. The film is peeled off together with the adhesive sheet (see Patent Document 1). Advanced technical literature

專利文獻1：日本特開2014-88256號公報Patent Document 1: Japanese Patent Laid-Open Publication No. 2014-88256

發明欲解決之課題 在此，如上述從於基板積層偏光板與表面保護薄膜而成之積層體，將偏光板與表面保護薄膜一起剝離時，若應用專利文獻1所記載之剝離方法，則黏著片黏附於表面保護薄膜之整面，並且偏光板會與該黏著片及表面保護薄膜一起剝離。 可是，即使是像這樣黏著片黏附於表面保護薄膜之整面，在剝離偏光板時，有時候該偏光板會破裂。當像這樣偏光板破裂，且破裂的一部分殘留於基板時，剩下的偏光板必須另外剝離，因此其結果是剝離偏光板的作業變困難。In the laminated body in which the polarizing plate and the surface protective film are peeled off together with the surface protective film, the peeling method described in Patent Document 1 is applied. The sheet adheres to the entire surface of the surface protective film, and the polarizing plate is peeled off together with the adhesive sheet and the surface protective film. However, even if the adhesive sheet adheres to the entire surface of the surface protective film as described above, sometimes the polarizing plate may be broken when the polarizing plate is peeled off. When the polarizing plate is broken like this and a part of the crack remains on the substrate, the remaining polarizing plate must be separately peeled off, so that the work of peeling off the polarizing plate becomes difficult.

有鑑於上述情況，本發明之課題即在於提供一種可抑制偏光板破裂並可將該偏光板與表面保護薄膜一起從基板簡便地剝離的剝離方法。In view of the above circumstances, an object of the present invention is to provide a peeling method capable of suppressing cracking of a polarizing plate and easily peeling the polarizing plate together with a surface protective film from a substrate.

解決課題之手段 本發明人等精心研究之下，得到如下見解。 如一般廣為人所知，在液晶顯示面板等中，黏附於基板之偏光板並未預定應予剝離。即，相較於以應予剝離為前提而將一薄膜黏附於其他構件之情況，偏光板是以相當強的黏附力黏附於基板。 相對於此，黏附於偏光板之表面保護薄膜是預定應予剝離的。即，表面保護薄膜是以遠 小於偏光板對基板之黏附力的黏附力黏附於偏光板。 圖19是顯示將如此之偏光板33與表面保護薄膜37抓住並拉起以使兩者從積層體30一起剝離的狀態（圖19中，反白箭頭記號是表示拉起的方向）。如上述，由於表面保護薄膜37與偏光板33之間的黏附力遠小於偏光板33與基板31之間的黏附力，因此表面保護薄膜37自偏光板33的剝除會進行的比偏光板33從基板31進行剝除的速度快。其結果便如圖19所示，本發明人等發現了表面保護薄膜37從偏光板33之尚未剝除的部分剝離，即，發生表面保護薄膜37從偏光板33脫離的情形。 又，本發明人等發現當發生如此的脫離時，在該脫離的部分，偏光板會變得容易破裂。 進而，矩形之偏光板與表面保護薄膜一起被剝離時，通常其等是從1個角部朝向畫對角線的方向剝離。因此，本發明人等試著將表面保護薄膜局部剝離，以沿著構成該剝離起點之2個端緣（2邊）的方式將黏著膠帶黏附於偏光板，並將該表面保護薄膜覆蓋該黏著膠帶而與其黏附，然後將偏光板與表面保護薄膜及黏著膠帶一起拉起。結果本發明人等發現，藉由該試驗，可抑制表面保護薄膜對偏光板的脫離，從而可抑制偏光板的破裂，並可將偏光板與表面保護薄膜一起剝離。 又，藉由前述做法，就不需要將表面保護薄膜全部剝離使偏光板露出以於露出之偏光板的整面貼上黏著片，因此剝離作業更為簡便，本發明人等終至完成了本發明。Means for Solving the Problems The present inventors have earnestly studied and obtained the following findings. As is generally known, in a liquid crystal display panel or the like, a polarizing plate adhered to a substrate is not intended to be peeled off. That is, the polarizing plate is adhered to the substrate with a relatively strong adhesive force as compared with the case where a film is adhered to other members on the premise that the film is to be peeled off. On the other hand, the surface protective film adhered to the polarizing plate is intended to be peeled off. That is, the surface protective film is adhered to the polarizing plate with an adhesive force much smaller than the adhesion of the polarizing plate to the substrate. Fig. 19 is a view showing a state in which the polarizing plate 33 and the surface protective film 37 are grasped and pulled up to peel the both together from the laminated body 30 (in Fig. 19, the reverse arrow symbol indicates the direction in which the drawing is pulled). As described above, since the adhesion between the surface protective film 37 and the polarizing plate 33 is much smaller than the adhesion between the polarizing plate 33 and the substrate 31, the peeling of the surface protective film 37 from the polarizing plate 33 is performed by the polarizing plate 33. The stripping from the substrate 31 is fast. As a result, as shown in FIG. 19, the inventors have found that the surface protective film 37 is peeled off from the portion of the polarizing plate 33 that has not been peeled off, that is, the surface protective film 37 is detached from the polarizing plate 33. Moreover, the present inventors have found that when such detachment occurs, the polarizing plate is easily broken at the detached portion. Further, when the rectangular polarizing plate is peeled off together with the surface protective film, it is usually peeled off from one corner toward the diagonal direction. Therefore, the inventors of the present invention tried to partially peel off the surface protective film to adhere the adhesive tape to the polarizing plate along the two end edges (two sides) constituting the peeling starting point, and to cover the adhesive film with the surface protective film. Adhere to the tape and pull the polarizer together with the surface protection film and adhesive tape. As a result, the inventors of the present invention have found that the detachment of the surface protective film to the polarizing plate can be suppressed by the test, whereby the crack of the polarizing plate can be suppressed, and the polarizing plate can be peeled off together with the surface protective film. Further, by the above-described method, the inventors have not completed the peeling of the surface protective film to expose the polarizing plate to attach the adhesive sheet to the entire surface of the exposed polarizing plate, so that the peeling operation is simpler, and the inventors have completed the present invention. invention.

即，本發明之剝離方法，是從具有基板及黏附於該基板之其中一面上之偏光板的矩形積層體將前述偏光板剝離，前述積層體更具有表面保護薄膜，其係可剝離地黏附於前述偏光板之與前述基板為相反側之外表面；將前述表面保護薄膜局部剝離，以使黏著膠帶黏附於前述偏光板之外表面，並以令黏著膠帶沿著前述偏光板之4個端緣中至少構成一角部之2個端緣的方式，將前述黏著膠帶黏附於前述偏光板之外表面，且使前述表面保護薄膜被覆黏附於前述黏著膠帶，再以前述角部為剝離起點將前述偏光板與前述表面保護薄膜及前述黏著膠帶一起剝離。That is, in the peeling method of the present invention, the polarizing plate is peeled off from a rectangular laminated body having a substrate and a polarizing plate adhered to one surface of the substrate, and the laminated body further has a surface protective film which is peelably adhered to a surface of the polarizing plate opposite to the substrate; the surface protective film is partially peeled off to adhere the adhesive tape to the outer surface of the polarizing plate, and the adhesive tape is along the four edges of the polarizing plate The adhesive tape is adhered to the outer surface of the polarizing plate at least to form the two end edges of the corner portion, and the surface protective film is coated and adhered to the adhesive tape, and the polarized light is used as the peeling starting point to polarize the light. The plate is peeled off together with the aforementioned surface protective film and the aforementioned adhesive tape.

又，上述構成之剝離方法中，宜以下述方式將前述黏著膠帶黏附於前述偏光板之外表面：使前述偏光板之供前述黏著膠帶沿著黏附之各端緣與對應該各端緣之前述黏著膠帶之外側端緣齊平；或者，以前述偏光板之供前述黏著膠帶沿著黏附的各端緣為準，使對應該各端緣之前述黏著膠帶之外側端緣以小於前述偏光板厚度之長度自前述各端緣朝外側突出。Further, in the peeling method of the above configuration, it is preferable that the adhesive tape is adhered to the outer surface of the polarizing plate in such a manner that the adhesive tape of the polarizing plate is along the end edges of the adhesive and the respective edge portions corresponding to the respective edges The outer edge of the adhesive tape is flush with the edge of the adhesive tape; or the adhesive tape of the foregoing polarizing plate is along the edge of the adhesive, so that the outer edge of the adhesive tape corresponding to each edge is smaller than the thickness of the polarizing plate. The length protrudes outward from the respective end edges.

又，上述構成之剝離方法中，宜將前述黏著膠帶沿著前述偏光板之4個端緣黏附於前述偏光板之外表面。Further, in the peeling method of the above configuration, it is preferable that the adhesive tape is adhered to the outer surface of the polarizing plate along the four end edges of the polarizing plate.

又，上述構成之剝離方法中，宜進一步將黏著片以隔著前述表面保護薄膜與前述黏著膠帶重疊的方式黏附於前述表面保護薄膜之與前述偏光板為相反側之外表面，並且，將前述偏光板與前述表面保護薄膜、前述黏著膠帶及前述黏著片一起剝離。Further, in the peeling method of the above configuration, it is preferable that the adhesive sheet is adhered to the outer surface of the surface protective film opposite to the polarizing plate so as to overlap the surface protective film and the adhesive tape, and The polarizing plate is peeled off together with the surface protective film, the adhesive tape, and the adhesive sheet.

以下，參考圖式並說明本發明之實施形態的剝離方法。Hereinafter, a peeling method according to an embodiment of the present invention will be described with reference to the drawings.

首先，說明以本實施形態之剝離方法剝離偏光板的積層體。 如圖1及圖2所示，積層體30具有：矩形之基板31；矩形之偏光板33，是黏附於該基板31之其中一面31a上；及表面保護薄膜37，是可剝離地黏附於該偏光板33之與基板31為相反側之外表面33a上。 基板31形成比偏光板33及表面保護薄膜37大，偏光板33與表面保護薄膜37形成為相同大小。First, a laminate in which the polarizing plate is peeled off by the peeling method of the present embodiment will be described. As shown in FIGS. 1 and 2, the laminated body 30 has a rectangular substrate 31, a rectangular polarizing plate 33 adhered to one surface 31a of the substrate 31, and a surface protective film 37 which is releasably adhered thereto. The polarizing plate 33 is on the opposite surface 33a from the substrate 31. The substrate 31 is formed larger than the polarizing plate 33 and the surface protective film 37, and the polarizing plate 33 and the surface protective film 37 are formed to have the same size.

基板31可舉例如硬質玻璃等。The substrate 31 can be, for example, hard glass or the like.

偏光板33藉由第1接著劑（不圖示）而黏附於基板31之上表面31a。偏光板33具有4個端緣34a、34b、34c、34d，且該等端緣之交點構成了4個角部35a、35b、35c、35d。The polarizing plate 33 is adhered to the upper surface 31a of the substrate 31 by a first adhesive (not shown). The polarizing plate 33 has four end edges 34a, 34b, 34c, and 34d, and the intersections of the end edges constitute four corner portions 35a, 35b, 35c, and 35d.

又，如圖3所示，本實施形態中，具體而言，偏光板33具備：偏光子41；分別形成於偏光子41之兩面且具有第2接著劑之2層接著劑層43；及分別積層於該等2層接著劑層43之2片保護膜45。 再者，像這樣本實施形態中，是顯示偏光板33具有偏光子41、及積層於其兩面之2片保護膜45的態樣，但除此之外，本發明中亦可採用偏光板33具有偏光子41、及僅積層於其中一面之保護膜45的態樣。Further, as shown in FIG. 3, in the present embodiment, specifically, the polarizing plate 33 includes a polarizer 41, and two adhesive layers 43 each having a second adhesive formed on both surfaces of the polarizer 41; Two protective films 45 laminated on the two adhesive layers 43 are laminated. In the present embodiment, the polarizing plate 33 has the polarizer 41 and the two protective films 45 laminated on both surfaces. However, in addition to the polarizing plate 33, the polarizing plate 33 may be used in the present invention. The aspect has the polarizer 41 and the protective film 45 laminated only on one side.

前述偏光板33之厚度並非特別限定者，可適當設定。但是例如偏光板33之厚度愈小則有其強度愈低而容易破裂的傾向，另一方面，其厚度愈大則有其強度增加而難以破裂的傾向。因此，例如偏光板33的厚度為200μm以下，宜為90μm以下，更宜為50μm以下時，宜適用本實施形態之剝離方法。其理由是因為即使像這樣厚度較小的情況下，由於偏光板33補強後，在剝離時偏光板33難以破裂，因此本實施形態之剝離方法更有用。The thickness of the polarizing plate 33 is not particularly limited and can be appropriately set. However, for example, the smaller the thickness of the polarizing plate 33, the lower the strength tends to be broken, and the larger the thickness, the more the strength tends to increase and the crack tends to be less likely to be broken. Therefore, for example, when the thickness of the polarizing plate 33 is 200 μm or less, preferably 90 μm or less, and more preferably 50 μm or less, the peeling method of the present embodiment is preferably applied. The reason for this is that the peeling method of the present embodiment is more useful because the polarizing plate 33 is hard to be broken at the time of peeling even when the thickness is small, because the polarizing plate 33 is reinforced.

又，偏光板33之材質並非特別限定者。但是，如後述，本實施形態之剝離方法宜適用於偏光板33，特別是當中具有容易破裂材質之保護膜45的偏光板33。Moreover, the material of the polarizing plate 33 is not particularly limited. However, as will be described later, the peeling method of the present embodiment is preferably applied to the polarizing plate 33, and particularly to the polarizing plate 33 having the protective film 45 which is easily broken.

偏光子41可舉聚乙烯醇系膜藉由染色、延伸而形成者。 偏光子41的厚度通常為2～30μm左右。The polarizer 41 can be formed by dyeing or stretching a polyvinyl alcohol film. The thickness of the polarizer 41 is usually about 2 to 30 μm.

第1及第2接著劑可舉習知公知的接著劑。The first and second adhesives are known as known adhesives.

保護膜45可舉三醋酸纖維素等之纖維素樹脂、聚酯樹脂、聚醚碸樹脂、聚碸樹脂、聚碳酸酯樹脂、聚醯胺樹脂、聚醯亞胺樹脂、聚烯烴樹脂、（甲基）丙烯酸酯樹脂、環狀聚烯烴樹脂（原冰片烯樹脂）、聚芳香酯樹脂、聚苯乙烯樹脂、聚乙烯醇樹脂、及選自於由該等混合物等構成之群之1或2以上所形成的膜。The protective film 45 may be a cellulose resin such as cellulose triacetate, a polyester resin, a polyether oxime resin, a polyfluorene resin, a polycarbonate resin, a polyamide resin, a polyimide resin, or a polyolefin resin. a acrylate resin, a cyclic polyolefin resin (formary borneol resin), a polyarylate resin, a polystyrene resin, a polyvinyl alcohol resin, and one or more selected from the group consisting of such a mixture or the like The film formed.

如上述之保護膜45的厚度通常為20～60μm左右。The thickness of the protective film 45 as described above is usually about 20 to 60 μm.

本實施形態之剝離方法所使用的積層體30中，是如上述，偏光板33藉由第1接著劑而黏附於基板31的上表面31a上。偏光板33對基板31之黏附力（即，第1接著劑之黏附力）通常為5～15N/25mm。若為前述黏附力，則偏光板33可比較堅固地黏附於基板31。又，即使是剝離如此堅固黏附之偏光板33時，也可抑制偏光板33之破裂。因此，本實施形態之剝離方法適合具有上述範圍之黏附力的積層體30。 前述黏附力是使用自動立體測圖儀（精密萬能試驗機，島津製作所製造），在偏光板33從基板31以拉伸速度300mm/min朝90°方向剝除時測定的値。In the laminated body 30 used in the peeling method of the present embodiment, as described above, the polarizing plate 33 is adhered to the upper surface 31a of the substrate 31 by the first adhesive. The adhesion force of the polarizing plate 33 to the substrate 31 (that is, the adhesion force of the first adhesive) is usually 5 to 15 N/25 mm. If it is the aforementioned adhesion force, the polarizing plate 33 can adhere to the substrate 31 relatively firmly. Further, even when the polarizing plate 33 thus strongly adhered is peeled off, the crack of the polarizing plate 33 can be suppressed. Therefore, the peeling method of this embodiment is suitable for the laminated body 30 which has the adhesive force of the said range. The adhesion was measured by using an autostereograph (precision universal testing machine, manufactured by Shimadzu Corporation), when the polarizing plate 33 was peeled off from the substrate 31 at a tensile speed of 300 mm/min toward the 90° direction.

表面保護薄膜37藉由具有比上述第1接著劑弱之黏附力的第3接著劑（不圖示）而可剝離地黏附於偏光板33之外表面33a，即保護膜45之外表面。 表面保護薄膜37分別對應於（重疊）偏光板33之4個端緣34a～34d，而具有4個端緣38a、38b、38c、38d，該等端緣之交點構成了角部39a、39b、39c、39d。 本實施形態中，表面保護薄膜37對偏光板33之黏附力（即，第3接著劑之黏附力）通常為0.3～2.0N/25mm。若為前述黏附力，則表面保護薄膜37可剝離地黏附於偏光板33。 前述黏附力是使用自動立體測圖儀（精密萬能試驗機，島津製作所製），當表面保護薄膜37從偏光板33以拉伸速度300mm/min朝90°方向剝除時測定之値。The surface protective film 37 is peelably adhered to the outer surface 33a of the polarizing plate 33, that is, the outer surface of the protective film 45, by a third adhesive (not shown) having a weak adhesion force to the first adhesive. The surface protection film 37 respectively corresponds to (overlaps) the four end edges 34a to 34d of the polarizing plate 33, and has four end edges 38a, 38b, 38c, 38d, and the intersections of the end edges constitute the corner portions 39a, 39b, 39c, 39d. In the present embodiment, the adhesion of the surface protective film 37 to the polarizing plate 33 (that is, the adhesion of the third adhesive) is usually 0.3 to 2.0 N/25 mm. In the case of the aforementioned adhesive force, the surface protective film 37 is peelably adhered to the polarizing plate 33. The adhesion force was measured by using an autostereoscopic measuring instrument (precision universal testing machine, manufactured by Shimadzu Corporation) when the surface protective film 37 was peeled off from the polarizing plate 33 at a stretching speed of 300 mm/min toward the 90° direction.

本實施形態之剝離方法是從矩形之積層體30剝離前述偏光板33的方法，前述積層體30具有基板31、及黏附於該基板31之其中一面（上表面）31a上的偏光板33，前述積層體30更具有表面保護薄膜37，前述表面保護薄膜是可剝離地黏附於前述偏光板33之與前述基板31為相反側之外表面33a，將前述表面保護薄膜37局部剝離以將黏著膠帶51黏附於前述偏光板33之外表面33a，且以前述黏著膠帶51沿著前述偏光板33之4個端緣34a、34b、34c、34d中至少構成一個角部35a之2個端緣34a、34b的方式，將前述黏著膠帶51黏附於前述偏光板33的外表面33a，並使前述表面保護薄膜37被覆黏附於前述黏著膠帶51，以前述角部35為剝離起點P而將前述偏光板33與前述表面保護薄膜37及前述黏著膠帶51一起剝離。 又，本實施形態中，採用以如下方式黏附前述黏著膠帶51的態樣：以使前述偏光板33之供前述黏著膠帶51沿著黏附的各端緣與對應該各端緣之前述黏著膠帶51之外側端緣齊平；或者，以前述偏光板33之供前述黏著膠帶51沿著黏附之各端緣34a～34d為準，使對應該各端緣34a～34d之前述黏著膠帶51之外側端緣以小於前述偏光板33厚度之長度自前述各端緣朝外側突出。 更具體而言，本實施形態中，是採用沿著前述偏光板33之4個端緣34a～34d將前述黏著膠帶51黏附於前述偏光板33的態樣。 又，本實施形態中，是採用如下態樣：更進一步使黏著片53以隔著前述表面保護薄膜37與前述黏著膠帶51重疊的方式，黏附於前述表面保護薄膜37之與前述偏光板33為相反側的外表面37a，並將前述偏光板33與前述表面保護薄膜37、前述黏著膠帶51及前述黏著片53一起剝離。The peeling method of the present embodiment is a method of peeling the polarizing plate 33 from the rectangular laminated body 30. The laminated body 30 has a substrate 31 and a polarizing plate 33 adhered to one surface (upper surface) 31a of the substrate 31. The laminated body 30 further has a surface protective film 37 which is releasably adhered to the outer surface 33a of the polarizing plate 33 opposite to the substrate 31, and partially peels off the surface protective film 37 to bond the adhesive tape 51. Adhering to the outer surface 33a of the polarizing plate 33, the adhesive tape 51 forms at least two end edges 34a, 34b of one corner portion 35a along the four end edges 34a, 34b, 34c, 34d of the polarizing plate 33. The adhesive tape 51 is adhered to the outer surface 33a of the polarizing plate 33, and the surface protective film 37 is adhered and adhered to the adhesive tape 51. The polarizing plate 33 is formed by using the corner portion 35 as a peeling starting point P. The surface protection film 37 and the adhesive tape 51 are peeled off together. Further, in the present embodiment, the adhesive tape 51 is adhered in such a manner that the adhesive tape 51 of the polarizing plate 33 is adhered to the end edge of the adhesive tape 51 and the adhesive tape 51 corresponding to each edge. The outer end edge of the adhesive tape 51 is flush with the outer edge of the adhesive tape 51, and the outer edge of the adhesive tape 51 corresponding to each of the end edges 34a to 34d is taken along the edge of the adhesive edge 34a to 34d. The edge protrudes outward from the respective end edges by a length smaller than the thickness of the polarizing plate 33. More specifically, in the present embodiment, the adhesive tape 51 is adhered to the polarizing plate 33 along the four end edges 34a to 34d of the polarizing plate 33. Further, in the present embodiment, the adhesive sheet 53 is adhered to the surface protective film 37 and the polarizing plate 33 so as to overlap the surface protective film 37 and the adhesive tape 51. The outer surface 37a on the opposite side is peeled off together with the surface protective film 37, the adhesive tape 51, and the adhesive sheet 53 described above.

本實施形態之剝離方法中，採用如下態樣：以偏光板33之角部35a為剝離起點P而將偏光板33從基板31剝離。In the peeling method of the present embodiment, the polarizing plate 33 is peeled off from the substrate 31 by using the corner portion 35a of the polarizing plate 33 as the peeling starting point P.

本實施形態中，採用如下態樣：將黏著膠帶51以沿著偏光板33之各端緣34a、34b、34c、34d的方式黏附於偏光板33之外表面33a。又，黏著膠帶51可使用兩面側具有黏著劑（第1黏著劑，不圖示）之膠帶，具體而言使用雙面膠帶。此種情況下，前述黏著膠帶51之一面側的黏著劑會露出，而於另一面側之黏著劑貼附有剝離襯墊（不圖示）。In the present embodiment, the adhesive tape 51 is adhered to the outer surface 33a of the polarizing plate 33 so as to extend along the respective end edges 34a, 34b, 34c, and 34d of the polarizing plate 33. Further, as the adhesive tape 51, a tape having an adhesive (first adhesive, not shown) on both sides may be used, and specifically, a double-sided tape is used. In this case, the adhesive on one surface side of the adhesive tape 51 is exposed, and a release liner (not shown) is attached to the adhesive on the other surface side.

黏著膠帶51之黏附力，即雙面膠帶之黏附力（上述第1黏著劑之黏附力）比表面保護薄膜37相對於偏光板33之外表面33a的黏附力（上述第3接著劑之黏附力）大。前述黏著膠帶51之黏附力宜為10.0N/25mm以上，更宜為15.0N/25mm以上。 藉由黏附力為10.0N/25mm以上，在偏光板33從基板31剝離之期間，可抑制黏著膠帶51從偏光板33脫離，因此，可更確實地在偏光板33不會斷裂之下將該偏光板33與表面保護薄膜37一起從基板31剝離。 再者，上述黏附力是藉由自動立體測圖儀（精密萬能試驗機，島津製作所製），在將表面保護薄膜37從偏光板33以拉伸速度300mm/min朝90°方向剝除時測定的値。The adhesive force of the adhesive tape 51, that is, the adhesion force of the double-sided tape (adhesion force of the first adhesive) is greater than the adhesion of the surface protective film 37 to the outer surface 33a of the polarizing plate 33 (adhesion of the third adhesive) )Big. The adhesive force of the adhesive tape 51 is preferably 10.0 N/25 mm or more, more preferably 15.0 N/25 mm or more. By the adhesion force being 10.0 N/25 mm or more, the adhesive tape 51 can be prevented from being detached from the polarizing plate 33 while the polarizing plate 33 is peeled off from the substrate 31, so that the polarizing plate 33 can be more reliably prevented from being broken. The polarizing plate 33 is peeled off from the substrate 31 together with the surface protective film 37. In addition, the adhesion force is measured by peeling off the surface protective film 37 from the polarizing plate 33 at a stretching speed of 300 mm/min toward the 90° direction by an autostereoscopic measuring instrument (precision universal testing machine, manufactured by Shimadzu Corporation). Hey.

本實施形態之剝離方法進行如下：在各端緣34a～34d，將表面保護薄膜37局部剝離，且在因剝離而露出的偏光板33的外表面33a黏附黏著膠帶51，並將黏附之黏著膠帶51的剝離襯墊剝離，在露出之黏著膠帶51的黏著劑被覆表面保護薄膜37。 具體而言，首先，如圖4所示，將表面保護薄膜37之端緣38a側局部剝離，以使黏著膠帶51沿著偏光板33之端緣34a黏附。 在藉由該剝離而露出之偏光板33之外表面33a的區域，如圖5所示，以沿著端緣34a的方式黏附黏著膠帶51。黏附後，貼附在黏著膠帶51之剝離襯墊（不圖示）剝離。剝離後，如圖6所示，令經局部剝離之表面保護薄膜37被覆黏附於露出之黏著膠帶51的黏著劑（不圖示）。再者，此處之後是以如下方式將黏著膠帶51黏附於偏光板33之端緣34a側：於偏光板33之端緣34b、34d側設置剝離用未黏附區域（未黏附有黏著膠帶51之區域），以可局部剝離該端緣34b、34d側之表面保護膜37來將黏著膠帶51黏附於該端緣34b、34d側。In the peeling method of the present embodiment, the surface protective film 37 is partially peeled off at each of the end edges 34a to 34d, and the adhesive tape 51 is adhered to the outer surface 33a of the polarizing plate 33 exposed by peeling, and the adhesive tape is adhered. The release liner of 51 is peeled off, and the surface protective film 37 is coated on the exposed adhesive tape 51. Specifically, first, as shown in FIG. 4, the edge 38a side of the surface protective film 37 is partially peeled off so that the adhesive tape 51 adheres along the edge 34a of the polarizing plate 33. In the region of the outer surface 33a of the polarizing plate 33 exposed by the peeling, as shown in Fig. 5, the adhesive tape 51 is adhered along the end edge 34a. After the adhesion, the release liner (not shown) attached to the adhesive tape 51 is peeled off. After the peeling, as shown in FIG. 6, the partially peeled surface protective film 37 is adhered to the adhesive (not shown) of the exposed adhesive tape 51. Further, here, the adhesive tape 51 is adhered to the end edge 34a side of the polarizing plate 33 in such a manner that an unadhered region for peeling is provided on the side edges 34b and 34d of the polarizing plate 33 (the adhesive tape 51 is not adhered thereto). In the region, the adhesive tape 51 is adhered to the side edges 34b and 34d side by partially peeling off the surface protective film 37 on the side of the end edges 34b and 34d.

其次，如圖7所示，將表面保護薄膜37之端緣38b側局部剝離，以使黏著膠帶51沿著偏光板33之端緣34b黏附。 如圖8所示，黏著膠帶51沿著端緣34b黏附於藉由該剝離而露出之偏光板33之外表面33a的區域。黏附後，貼附於黏著膠帶51之剝離襯墊（不圖示）被剝離。剝離後，如圖9所示，令經局部剝離之表面保護薄膜37被覆黏附於露出之黏著膠帶51的黏著劑（不圖示）。再者，此處是以埋設經於上述偏光板33之端緣34a側黏附黏著薄膜51而形成之剝離用未黏附區域的方式，且以設置剝離用未黏附區域以可局部剝離偏光板33之端緣34c側的表面保護薄膜37來將黏著膠帶51黏附於該端緣34c側的方式，在偏光板33之端緣34b側黏附黏著膠帶51。Next, as shown in Fig. 7, the end edge 38b side of the surface protective film 37 is partially peeled off so that the adhesive tape 51 adheres along the edge 34b of the polarizing plate 33. As shown in Fig. 8, the adhesive tape 51 is adhered to the region of the outer surface 33a of the polarizing plate 33 exposed by the peeling along the end edge 34b. After the adhesion, the release liner (not shown) attached to the adhesive tape 51 is peeled off. After the peeling, as shown in FIG. 9, the partially peeled surface protective film 37 is adhered to the adhesive (not shown) of the exposed adhesive tape 51. In this case, the peeling non-adhesion region formed by adhering the adhesive film 51 to the end edge 34a side of the polarizing plate 33 is embedded, and the non-adhering region for peeling is provided to partially peel off the polarizing plate 33. The surface protective film 37 on the side of the end edge 34c adheres the adhesive tape 51 to the side of the edge 34b of the polarizing plate 33 so that the adhesive tape 51 adheres to the edge 34c side.

與其等同樣地，將表面保護薄膜37之端緣38c側局部剝離，以使黏著膠帶51沿著偏光板33之端緣34c黏附，並且黏著膠帶51沿著端緣34c黏附於藉由該剝離而露出之偏光板33之外表面33a的區域。黏附後，貼附於黏著膠帶51之剝離襯墊被剝離，並將經局部剝離之表面保護薄膜37被覆黏附於露出之黏著膠帶51的黏著劑。再者，此處是以埋設經於上述偏光板33之端緣34b側黏附黏著薄膜51而形成之剝離用未黏附區域的方式，且以設置可局部剝離偏光板33之端緣34d側的表面保護薄膜37以於該端緣34d側黏附黏著膠帶51這種剝離用未黏附區域的方式，在偏光板33之端緣34c側黏附黏著膠帶51。 進而，為了沿著端緣34d黏附黏著膠帶51，將表面保護薄膜37之端緣38d側局部剝離，並且使黏著膠帶51沿著端緣34d黏附於藉由該剝離而露出之偏光板33之外表面33a之區域。黏附後，貼附於黏著膠帶51之剝離襯墊被剝離，並使經局部剝離之表面保護薄膜37被覆黏附於露出之黏著膠帶51的黏著劑。再者，此處是以埋設經於上述偏光板33之端緣34a，34c側黏附黏著薄膜51而形成之剝離用未黏附區域的方式，在偏光板33之端緣34d側黏附黏著膠帶51。Similarly to the same, the edge 38c side of the surface protective film 37 is partially peeled off so that the adhesive tape 51 adheres along the edge 34c of the polarizing plate 33, and the adhesive tape 51 is adhered along the edge 34c by the peeling. The area of the outer surface 33a of the polarizing plate 33 is exposed. After the adhesion, the release liner attached to the adhesive tape 51 is peeled off, and the partially peeled surface protection film 37 is adhered to the adhesive of the exposed adhesive tape 51. In this case, the peeling non-adhering region formed by adhering the adhesive film 51 to the end edge 34b side of the polarizing plate 33 is embedded, and the surface on the edge 34d side of the polarizing plate 33 can be partially peeled off. The protective film 37 adheres the adhesive tape 51 to the end edge 34c side of the polarizing plate 33 so that the adhesive tape 51 is adhered to the end portion 34d side. Further, in order to adhere the adhesive tape 51 along the end edge 34d, the edge 38d side of the surface protective film 37 is partially peeled off, and the adhesive tape 51 is adhered along the edge 34d to the polarizing plate 33 exposed by the peeling. The area of the surface 33a. After the adhesion, the release liner attached to the adhesive tape 51 is peeled off, and the partially peeled surface protection film 37 is adhered to the adhesive of the exposed adhesive tape 51. In this case, the adhesive tape 51 is adhered to the end edge 34d side of the polarizing plate 33 so as to embed the peeling non-adhesion region formed by adhering the adhesive film 51 to the end edges 34a, 34c of the polarizing plate 33.

如此，為使黏著膠帶51沿著偏光板33之4個端緣34a～34d黏附於偏光板33之外表面33a，而將表面保護薄膜37局部剝離，並使黏著膠帶51黏附於藉由剝離而露出之偏光板33之外表面33a後，將貼附各黏著膠帶51之剝離襯墊剝離，且如圖10所示，使經局部剝離之表面保護薄膜37被覆黏附於露出之黏著膠帶51的黏著劑。In this manner, in order to adhere the adhesive tape 51 to the outer surface 33a of the polarizing plate 33 along the four end edges 34a to 34d of the polarizing plate 33, the surface protective film 37 is partially peeled off, and the adhesive tape 51 is adhered by peeling. After the outer surface 33a of the polarizing plate 33 is exposed, the release liner to which the adhesive tape 51 is attached is peeled off, and as shown in FIG. 10, the partially peeled surface protective film 37 is adhered and adhered to the adhered adhesive tape 51. Agent.

本實施形態中，亦可以使偏光板33之供黏著膠帶51沿著黏附之各端緣（即4個各端緣34a～34d）與對應各端緣之黏著膠帶51之外側端緣齊平（即，偏光板33之各端緣與各黏著膠帶51之外側端緣一致）的方式，將黏著膠帶51黏附於偏光板33之外表面33a。或者，亦可以偏光板33之供黏著膠帶51沿著黏附之各端緣34a～34d為準，使對應該各端緣34a～34d之黏著膠帶51之外側端緣以小於偏光板33厚度之長度自各端緣朝外側突出，來將黏著膠帶51黏附於偏光板33之外表面33a。In this embodiment, the adhesive tape 51 of the polarizing plate 33 may be flush with the outer edge of the adhesive tape 51 corresponding to each end edge along the respective end edges of the adhesive (ie, the four end edges 34a to 34d). In other words, the adhesive tape 51 is adhered to the outer surface 33a of the polarizing plate 33 so that the edge of each of the polarizing plates 33 coincides with the outer edge of each of the adhesive tapes 51. Alternatively, the adhesive tape 51 of the polarizing plate 33 may be along the respective end edges 34a to 34d of the adhesive, so that the outer edge of the adhesive tape 51 corresponding to each of the end edges 34a to 34d is smaller than the thickness of the polarizing plate 33. The adhesive tape 51 is adhered to the outer surface 33a of the polarizing plate 33 by protruding from the respective end edges.

在此，如圖1所示，通常，由於基板31形成比偏光板33大，因此當黏著膠帶51之外側端緣自偏光板33之端緣朝外側超出時，則可能會發生該黏著膠帶51與基板31黏附，妨礙偏光板33自基板31的剝離的狀況。又，通常，偏光板33會被切斷而形成預定的形狀，由於以微觀來看，在其端緣存在未成一直線之部分（例如成毛邊的部分），因此當黏著膠帶51之外側端緣自偏光板33的端緣往内側退入時，恐怕會發生以該未成一直線之部分為起點而破裂的情況。Here, as shown in FIG. 1, in general, since the substrate 31 is formed larger than the polarizing plate 33, the adhesive tape 51 may occur when the outer edge of the adhesive tape 51 is extended outward from the edge of the polarizing plate 33. Adhesion to the substrate 31 prevents the peeling of the polarizing plate 33 from the substrate 31. Further, in general, the polarizing plate 33 is cut to form a predetermined shape, and since there is a portion which is not in line at the end edge thereof (for example, a portion which becomes a burr), the outer edge of the adhesive tape 51 is self-contained. When the edge of the polarizing plate 33 is retracted toward the inside, there is a fear that the portion which is not in the straight line is broken as a starting point.

可是，如上述，以使偏光板33之供黏著膠帶51沿著黏附的各端緣與對應各端緣之黏著膠帶51之外側端緣齊平的方式；或者是採取以前述偏光板33之供前述黏著膠帶51沿著黏附之各端緣34a～34d為準，使對應該各端緣34a～34d之前述黏著膠帶51之外側端緣以小於前述偏光板33厚度之長度自各端緣朝外側突出的方式，將黏著膠帶51黏附於偏光板33之外表面33a，藉此可抑制如上述之黏著膠帶51之超出造成的問題，或因為內退造成的問題。因此，可更確實地抑制偏光板33破裂，並且可以使前述偏光板33與表面保護薄膜37一起從基板31剝離。 再者，若黏著膠帶51之外側端緣以小於該偏光板33厚度之長度自偏光板33之端緣34a～34d朝外側突出，則在黏著膠帶51不會黏附於基材31之下，可與上述同樣地更確實地抑制偏光板33破裂，並且前述偏光板33可與表面保護薄膜37一起從基板31剝離。However, as described above, the adhesive tape 51 of the polarizing plate 33 may be flush with the outer edge of the adhesive tape 51 corresponding to each end edge along the respective end edges of the adhesive tape 51; or the polarizing plate 33 may be used. The adhesive tape 51 is along the respective end edges 34a to 34d of the adhesion, so that the outer edge of the adhesive tape 51 corresponding to each of the end edges 34a to 34d protrudes outward from each end edge by a length smaller than the thickness of the polarizing plate 33. In a manner, the adhesive tape 51 is adhered to the outer surface 33a of the polarizing plate 33, whereby the problem caused by the excess of the adhesive tape 51 as described above or the problem caused by the retreat can be suppressed. Therefore, the polarizing plate 33 can be more reliably suppressed from being broken, and the polarizing plate 33 can be peeled off from the substrate 31 together with the surface protective film 37. Further, if the outer edge of the adhesive tape 51 protrudes outward from the end edges 34a to 34d of the polarizing plate 33 by a length smaller than the thickness of the polarizing plate 33, the adhesive tape 51 does not adhere to the substrate 31. The polarizing plate 33 is more reliably suppressed from being broken as described above, and the polarizing plate 33 can be peeled off from the substrate 31 together with the surface protective film 37.

黏著膠帶51的寬度沒有特別限定，但可適當設定。例如，若黏著膠帶51的寬度加大，則有可更為抑制表面保護薄膜37與偏光板33之脫離的傾向，另一方面則有成本變高的傾向。因此，例如，考慮到前述觀點，而黏著膠帶51的寬度宜為10～50mm。The width of the adhesive tape 51 is not particularly limited, but can be appropriately set. For example, when the width of the adhesive tape 51 is increased, the tendency of the surface protection film 37 and the polarizing plate 33 to be detached is further suppressed, and on the other hand, the cost tends to be high. Therefore, for example, in consideration of the foregoing point of view, the width of the adhesive tape 51 is preferably 10 to 50 mm.

其次，進一步使黏著片53以隔著表面保護薄膜37而與沿著偏光板33之端緣34a、34b、34c、34d黏附之黏著膠帶51重疊的方式，黏附於該表面保護薄膜37之外表面37a。Next, the adhesive sheet 53 is further adhered to the outer surface of the surface protective film 37 so as to overlap the adhesive tape 51 adhered along the edge edges 34a, 34b, 34c, and 34d of the polarizing plate 33 via the surface protective film 37. 37a.

本實施形態中，使用僅一面側露出黏著劑的黏著片53。該黏著片53是使用例如與黏著膠帶51同樣在雙面膠帶之一面側貼附有剝離襯墊者（不用剝離剝離襯墊）。 該黏著片53之表面（與黏附於表面保護薄膜37之側相反之側的面，在此為剝離襯墊的表面）的滑動性宜比表面保護薄膜37高。具體而言，黏著片53之表面的摩擦係數宜比表面保護薄膜37之外表面37a的摩擦係數小。In the present embodiment, the adhesive sheet 53 in which the adhesive is exposed on only one side is used. In the adhesive sheet 53, for example, a release liner is attached to one side of the double-sided tape in the same manner as the adhesive tape 51 (without peeling the release liner). The surface of the adhesive sheet 53 (the surface opposite to the side adhered to the surface protective film 37, here the surface of the release liner) is preferably more slidable than the surface protective film 37. Specifically, the friction coefficient of the surface of the adhesive sheet 53 is preferably smaller than the friction coefficient of the outer surface 37a of the surface protective film 37.

本實施形態中，具體而言，如圖11所示，進一步使黏著片53以隔著表面保護薄膜37而與沿著偏光板33之端緣34a黏附的黏著膠帶51重疊的方式，即以沿著該表面保護薄膜37之端緣38a的方式，黏附於該表面保護薄膜37的外表面37a。In the present embodiment, as shown in FIG. 11, the adhesive sheet 53 is further overlapped with the adhesive tape 51 adhered along the edge 34a of the polarizing plate 33 via the surface protective film 37, that is, along the edge. The outer edge 37a of the surface protective film 37 is adhered in such a manner as to end the edge 38a of the surface protective film 37.

又，如圖12所示，進一步使黏著片53以隔著表面保護薄膜37而與沿著偏光板33之端緣34b黏附的黏著膠帶51重疊的方式，即，以沿著該表面保護薄膜37之端緣38b的方式，黏附於該表面保護薄膜37的外表面37a。Further, as shown in FIG. 12, the adhesive sheet 53 is further overlapped with the adhesive tape 51 adhered along the edge 34b of the polarizing plate 33 via the surface protective film 37, that is, along the surface protective film 37. The end edge 38b is adhered to the outer surface 37a of the surface protection film 37.

進而，與其等同樣地，進一步使黏著片53以隔著表面保護薄膜37而與沿著偏光板33之端緣34c黏附之黏著膠帶51重疊的方式，即，以沿著該表面保護薄膜37之端緣38c的方式，黏附於該表面保護薄膜37之外表面37a。 又，進一步黏著片53以隔著表面保護薄膜37而與沿著偏光板33之端緣34d黏附的黏著膠帶51重疊的方式，即，以沿著該表面保護薄膜37之端緣38d的方式，黏附於該表面保護薄膜37之外表面37a。Further, in the same manner as the above, the adhesive sheet 53 is further overlapped with the adhesive tape 51 adhered along the edge 34c of the polarizing plate 33 via the surface protective film 37, that is, along the surface protective film 37. The end edge 38c is adhered to the outer surface 37a of the surface protective film 37. Further, the adhesive sheet 53 is overlapped with the adhesive tape 51 adhered along the edge 34d of the polarizing plate 33 via the surface protective film 37, that is, along the edge 38d of the surface protective film 37. Adhered to the outer surface 37a of the surface protection film 37.

如此，如圖13所示，黏著片53以隔著表面保護薄膜37而與黏著膠帶51重疊的方式，沿著其4個端緣38a～38d，黏附於表面保護薄膜37的外表面37a。As described above, as shown in FIG. 13, the adhesive sheet 53 is adhered to the outer surface 37a of the surface protective film 37 along the four end edges 38a to 38d so as to overlap the adhesive tape 51 with the surface protective film 37 interposed therebetween.

黏附，使用剝離裝置1，偏光板33與表面保護薄膜37、黏著膠帶51及黏著片53一起以偏光板33之角部35a為剝離起點P而依序剝離。The peeling device 1 is used, and the polarizing plate 33 is peeled off in order from the surface protective film 37, the adhesive tape 51, and the adhesive sheet 53 with the corner portion 35a of the polarizing plate 33 as the peeling starting point P.

就使用於本實施形態之剝離方法之較佳剝離裝置1進行說明。A preferred peeling device 1 used in the peeling method of the present embodiment will be described.

如圖14、圖15所示，本實施形態之剝離裝置1包含有：載置積層體30之工作台構件3；輥子狀之剝離輔助構件7；及剝離構件5，該剝離構件5是將從積層體30剝離且由剝離輔助構件7剝離之偏光板33的角部35a和與其重疊之表面保護薄膜39的角部39a、黏著膠帶51及黏著片53予以固持，來將偏光板33進一步順序剝離。 更具體而言，本實施形態之剝離裝置1具有捲繞構件5作為剝離構件5。該捲繞構件5構造成：從積層體30剝離且藉由剝離輔助構件7而彎曲之偏光板33的角部35a與和其重疊之黏著膠帶51、黏著片53及表面保護薄膜之角部39a一起捲掛於該捲繞構件5，且藉由該捲繞構件5旋轉，更進一步剝離偏光板33且依序捲繞。As shown in Fig. 14 and Fig. 15, the peeling device 1 of the present embodiment includes a table member 3 on which the laminated body 30 is placed, a roll-shaped peeling auxiliary member 7 and a peeling member 5 which is a peeling member 5 The corner portion 35a of the polarizing plate 33, which is peeled off by the peeling auxiliary member 7, and the corner portion 39a of the surface protective film 39, the adhesive tape 51, and the adhesive sheet 53 which are overlapped with each other are held, and the polarizing plate 33 is further peeled off in order. . More specifically, the peeling device 1 of the present embodiment has the winding member 5 as the peeling member 5. The winding member 5 is configured such that the corner portion 35a of the polarizing plate 33 which is peeled off from the laminated body 30 and is bent by the peeling auxiliary member 7 and the adhesive tape 51, the adhesive sheet 53, and the corner portion 39a of the surface protective film which are overlapped therewith The winding member 5 is wound together, and by rotating the winding member 5, the polarizing plate 33 is further peeled off and wound in order.

工作台構件3是從積層體30到將全部的偏光板33剝離之期間，用以載置積層體30之台。The table member 3 is a stage on which the laminated body 30 is placed from the laminated body 30 to the time when all of the polarizing plates 33 are peeled off.

剝離輔助構件7是使偏光板33自基板31剝離，並且使剝離之偏光板33與表面保護薄膜37、黏著膠帶51及黏著片53一起彎曲並且往後端側導引。該剝離輔助構件7可舉例輥體。The peeling auxiliary member 7 peels the polarizing plate 33 from the substrate 31, and bends the peeled polarizing plate 33 together with the surface protective film 37, the adhesive tape 51, and the adhesive sheet 53, and guides it toward the rear end side. The peeling auxiliary member 7 can be exemplified by a roller body.

捲繞構件5是將剝離之偏光板33的角部35a和與其重疊之黏著膠帶51、黏著片53及表面保護薄膜37之角部39a一起捲掛，並在此狀態下旋轉，藉此使偏光板33與黏著膠帶51、黏著片53及表面保護薄膜37一起進一步剝離並且依序捲繞。 如此之捲繞構件5可舉例如受到馬達等驅動裝置17的驅動而旋轉之輥子等。 又，捲繞構件5中，上述剝離之偏光板33的角部35a和與其重疊之黏著膠帶51、黏著片53及表面保護薄膜37的角部39a一起藉由接著膠帶（不圖示）等而固定。 再者，圖14中，偏光板33與上述第1接著劑（不圖示）一起從基板31剝離。The winding member 5 winds the corner portion 35a of the peeled polarizing plate 33 together with the adhesive tape 51, the adhesive sheet 53, and the corner portion 39a of the surface protective film 37, and rotates in this state, thereby causing polarization. The plate 33 is further peeled off together with the adhesive tape 51, the adhesive sheet 53, and the surface protective film 37 and sequentially wound. The winding member 5 may be, for example, a roller that is rotated by a driving device 17 such as a motor. Further, in the winding member 5, the corner portion 35a of the peeled polarizing plate 33 and the adhesive tape 51, the adhesive sheet 53 and the corner portion 39a of the surface protective film 37 which are overlapped thereon are brought together by a tape (not shown) or the like. fixed. Further, in FIG. 14, the polarizing plate 33 is peeled off from the substrate 31 together with the first adhesive (not shown).

本實施形態中，是使用上述剝離裝置1，將偏光板33之角部35a與表面保護薄膜37之角部39a、黏著膠帶51及黏著片53一起自積層體30剝離，該剝離之部分捲掛於剝離輔助構件7，並且進一步捲掛於剝離構件5。在此狀態下，藉由以剝離構件51捲繞，剝離之偏光板33與表面保護薄膜37、黏著膠帶51及黏著片53一起藉由剝離輔助構件7而彎曲並且往剝離構件5導引，且以剝離構件5捲繞。藉此，偏光板33與表面保護薄膜37、黏著膠帶51及黏著片53一起進一步由基板31依序剝離、捲繞。In the present embodiment, the peeling device 1 is used to peel the corner portion 35a of the polarizing plate 33 from the corner portion 39a of the surface protective film 37, the adhesive tape 51, and the adhesive sheet 53 from the laminated body 30, and the peeling portion is wound. The auxiliary member 7 is peeled off and further wound around the peeling member 5. In this state, the peeling member 33 is wound by the peeling member 51, and the peeling polarizing plate 33 is bent together with the surface protective film 37, the adhesive tape 51, and the adhesive sheet 53 by the peeling auxiliary member 7, and guided to the peeling member 5, and It is wound by the peeling member 5. Thereby, the polarizing plate 33 is further peeled off and wound by the substrate 31 in this order together with the surface protective film 37, the adhesive tape 51, and the adhesive sheet 53.

偏光板33之角部35a從積層體30剝離是如以下所進行。即，作業者之手指抓住前端具有刃部之剝離用刀片（不圖示）等，上述剝離用刀片***積層體30之基板31與偏光板33的角部35a之間，藉此剝離偏光板33之角部35a。更具體而言，上述剝離用刀片***黏附於偏光板33之基板31側之面33b的上述第1接著劑（不圖示）與基板31之間，並且偏光板33與上述第1接著劑一起剝離。The peeling of the corner portion 35a of the polarizing plate 33 from the laminated body 30 is performed as follows. In other words, the blade of the operator grasps a peeling blade (not shown) having a blade at the tip end, and the peeling blade is inserted between the substrate 31 of the laminated body 30 and the corner portion 35a of the polarizing plate 33, thereby peeling off the polarizing plate. 33 corner portion 35a. More specifically, the peeling blade is inserted between the first adhesive (not shown) adhered to the surface 33b on the substrate 31 side of the polarizing plate 33 and the substrate 31, and the polarizing plate 33 is together with the first adhesive. Stripped.

又，剝離之偏光板33的角部35a與表面保護薄膜37之角部39a、黏著膠帶51、黏著片53一起捲掛於捲繞構件5是如以下所進行。即，剝離之偏光板33的角部35a捲掛於捲繞構件5之周面而以接著膠帶（不圖示）等固定於該周面，藉此進行上述捲掛。Further, the corner portion 35a of the peeled polarizing plate 33 is wound around the winding member 5 together with the corner portion 39a of the surface protective film 37, the adhesive tape 51, and the adhesive sheet 53, as follows. In other words, the corner portion 35a of the peeling polarizing plate 33 is wound around the circumferential surface of the winding member 5, and is fixed to the circumferential surface by a tape (not shown) or the like, thereby performing the above-described winding.

接著，從圖15所示之狀態，偏光板33藉由捲繞構件5進而剝離並且依序捲繞時，隨著偏光板33持續剝離，如圖16、圖17所示，積層體30朝與剝離方向Ｘ相反之側（參考圖16、圖17之反白箭頭記號）依序移動。即，積層體30對工作台構件3相對地移動。更具體而言，積層體30在工作台構件3上滑動。如圖17所示，最後全部的偏光板33剝離而基板31完全露出時，積層體30停止移動。 如此，偏光板33與表面保護薄膜37、黏著膠帶51及黏著片53一起從積層體30剝離。Next, from the state shown in FIG. 15, when the polarizing plate 33 is further peeled off by the winding member 5 and sequentially wound, as the polarizing plate 33 continues to peel off, as shown in FIGS. 16 and 17, the laminated body 30 faces The side opposite to the peeling direction X (refer to the reverse white arrow marks in FIGS. 16 and 17) is sequentially moved. That is, the laminated body 30 relatively moves to the table member 3. More specifically, the laminated body 30 slides on the table member 3. As shown in FIG. 17, when all of the last polarizing plates 33 are peeled off and the substrate 31 is completely exposed, the laminated body 30 stops moving. In this manner, the polarizing plate 33 is peeled off from the laminated body 30 together with the surface protective film 37, the adhesive tape 51, and the adhesive sheet 53.

如上述，本實施形態之剝離方法是從矩形之積層體30剝離偏光板33的剝離方法，前述矩形之積層體30具有：基板31；及黏附於該基板31之其中一面31a上之偏光板33，前述積層體30更具有表面保護薄膜37，前述表面保護薄膜37是可剝離地黏附於前述偏光板33之與前述基板31為相反側之外表面33a，將前述表面保護薄膜37局部剝離，以將黏著膠帶51黏附於前述偏光板33之外表面33a，並以令黏著膠帶51沿著前述偏光板33之4個端緣34a、34b、34c、34d中至少構成一角部35a之2個端緣34a、34b的方式，將前述黏著膠帶51黏附於前述偏光板33之外表面33a，且使前述表面保護薄膜37被覆黏附於前述黏著膠帶51，再以前述角部35為剝離起點P將前述偏光板33與前述表面保護薄膜37及前述黏著膠帶51一起剝離。As described above, the peeling method of the present embodiment is a peeling method of peeling the polarizing plate 33 from the rectangular laminated body 30, and the rectangular laminated body 30 has the substrate 31 and a polarizing plate 33 adhered to one surface 31a of the substrate 31. The laminated body 30 further includes a surface protective film 37 which is peelably adhered to the outer surface 33a of the polarizing plate 33 opposite to the substrate 31, and partially peels off the surface protective film 37. Adhesive tape 51 is adhered to the outer surface 33a of the polarizing plate 33, and at least two end edges of a corner portion 35a are formed along the four end edges 34a, 34b, 34c, and 34d of the polarizing plate 33. In the method of 34a and 34b, the adhesive tape 51 is adhered to the outer surface 33a of the polarizing plate 33, and the surface protective film 37 is adhered and adhered to the adhesive tape 51, and the polarized light is used as the peeling starting point P. The plate 33 is peeled off together with the surface protection film 37 and the above-mentioned adhesive tape 51.

根據該構成，是將表面保護薄膜37局部剝離，再以令黏著膠帶51沿著偏光板33之4個端緣34a～34d中至少構成一角部35a之2個端緣34a、34b的方式，將黏著膠帶51黏附於偏光板33之外表面33a，且以該角部35a為剝離起點P將偏光板33與表面保護薄膜37及黏著膠帶51一起剝離。藉由如此剝離，在偏光板33剝離時，可抑制表面保護薄膜37從偏光板33脫離。藉此，如圖18所示，在剝離期間，會維持表面保護薄膜37與偏光板33黏附的狀態。其結果，由於維持偏光板33已由表面保護薄膜37補強的狀態且由基板31剝離，因此可抑制偏光板33破裂。 在此，為了使記載於專利文獻1之黏著片黏附於偏光板33之外表面33a的整面，必須在表面保護薄膜37全部剝離使偏光板33露出後，再於露出之偏光板33之外表面33a整面黏附黏著片。因此，僅處理在偏光板33之外表面33a整面黏附黏著片，又，使用另外的黏著片而補強偏光板33，因此僅處理該部分。 可是，根據上述構成，由於在偏光板33之外表面33a之端緣側的部分黏附黏著膠帶51，因此可省去該部分的處理。又，由於可以表面保護薄膜37補強偏光板33，有效利用表面保護薄膜37，也省去以另外的構件補強偏光板33。 如此，可抑制偏光板33破裂，並且該偏光板33可與表面保護薄膜37一起從基板31簡便地剝離。According to this configuration, the surface protective film 37 is partially peeled off, and the adhesive tape 51 is formed so as to form at least two end edges 34a and 34b of one corner portion 35a along the four end edges 34a to 34d of the polarizing plate 33. The adhesive tape 51 is adhered to the outer surface 33a of the polarizing plate 33, and the polarizing plate 33 is peeled off together with the surface protective film 37 and the adhesive tape 51 with the corner portion 35a as the peeling starting point P. By peeling off as described above, when the polarizing plate 33 is peeled off, the surface protective film 37 can be prevented from being detached from the polarizing plate 33. Thereby, as shown in FIG. 18, the state which adhered the surface protection film 37 and the polarizing plate 33 is maintained during peeling. As a result, since the polarizing plate 33 is maintained in a state of being reinforced by the surface protective film 37 and peeled off from the substrate 31, the polarizing plate 33 can be prevented from being broken. Here, in order to adhere the adhesive sheet described in Patent Document 1 to the entire surface of the outer surface 33a of the polarizing plate 33, it is necessary to peel the entire surface protective film 37 to expose the polarizing plate 33, and then to expose the polarizing plate 33. The surface 33a adheres to the entire surface of the adhesive sheet. Therefore, only the adhesive sheet is adhered to the entire surface 33a of the polarizing plate 33, and the polarizing plate 33 is reinforced by using another adhesive sheet, so that only the portion is processed. However, according to the above configuration, since the adhesive tape 51 is adhered to the portion on the edge side of the outer surface 33a of the polarizing plate 33, the processing of the portion can be omitted. Further, since the surface protective film 37 can be used to reinforce the polarizing plate 33, the surface protective film 37 can be effectively utilized, and the polarizing plate 33 can be reinforced by another member. Thus, the polarizing plate 33 can be suppressed from being broken, and the polarizing plate 33 can be easily peeled off from the substrate 31 together with the surface protective film 37.

又，本實施形態之剝離方法中，是以下述方式黏附前述黏著膠帶51：使前述偏光板33之供前述黏著膠帶51沿著黏附之各端緣34～34d與對應該各端緣34a～34d之前述黏著膠帶51之外側端緣齊平；或者，以前述偏光板33之供前述黏著膠帶51沿著黏附之各端緣34a～34d為準，使對應該各端緣34a～34d之前述黏著膠帶51之外側端緣以小於前述偏光板33厚度之長度自前述各端緣朝外側突出。Further, in the peeling method of the present embodiment, the adhesive tape 51 is adhered in such a manner that the adhesive tape 51 of the polarizing plate 33 is adhered to the respective end edges 34 to 34d and the respective end edges 34a to 34d. The outer edge of the adhesive tape 51 is flush with the outer edge; or the adhesive tape 51 of the polarizing plate 33 is adjacent to the end edges 34a to 34d of the adhesive, so that the adhesion of the respective end edges 34a to 34d is made. The outer end edge of the tape 51 protrudes outward from the respective end edges with a length smaller than the thickness of the polarizing plate 33.

在此，通常，由於基板31形成比偏光板33大，因此當黏著膠帶51之外側端緣以偏光板33厚度以上的長度自偏光板33之端緣34a～34d朝外側超出時，恐怕會發生該黏著膠帶51與基板31黏附，並且妨礙偏光板33自基板31的剝離的問題。又，通常，偏光板33會被切斷形成為預定形狀，以微觀來看於其端緣存在未成一直線的部分（例如成毛邊的部分）。因此，當黏著膠帶51之外側端緣自偏光板33之端緣34a～34d往内側退入時，恐怕會發生以該未成為一直線之部分為起點而產生破裂的情況。 可是，根據該構成，可抑制發生如上述之黏著膠帶51之超出造成的問題、或內退造成的問題，故可更確實地抑制偏光板33破裂，並且偏光板33可與表面保護薄膜37一起從基板31剝離。Here, in general, since the substrate 31 is formed larger than the polarizing plate 33, when the outer edge of the adhesive tape 51 is longer than the thickness of the polarizing plate 33 from the edge 34a to 34d of the polarizing plate 33, it may occur. The adhesive tape 51 adheres to the substrate 31 and hinders the problem of peeling of the polarizing plate 33 from the substrate 31. Further, in general, the polarizing plate 33 is cut into a predetermined shape, and microscopically, there are portions which are not in line (for example, a portion which becomes a burr) at the end edges thereof. Therefore, when the outer edge of the adhesive tape 51 is retracted from the end edges 34a to 34d of the polarizing plate 33, there is a fear that cracks may occur due to the portion which is not a straight line. However, according to this configuration, it is possible to suppress the problem caused by the excess of the adhesive tape 51 as described above or the problem caused by the retreat, so that the crack of the polarizing plate 33 can be more surely suppressed, and the polarizing plate 33 can be together with the surface protective film 37. The substrate 31 is peeled off.

又，本實施形態之剝離方法中，以沿著前述偏光板33之4個端緣34a～34d的方式，將前述黏著膠帶51黏附於前述偏光板33之外表面33a。Further, in the peeling method of the present embodiment, the adhesive tape 51 is adhered to the outer surface 33a of the polarizing plate 33 so as to extend along the four end edges 34a to 34d of the polarizing plate 33.

根據該構成，在剝離偏光板33時，可更確實地抑制表面保護薄膜37從偏光板33脫離，因此可更確實地抑制偏光板33破裂，並且偏光板33與表面保護薄膜37一起從基板31剝離。According to this configuration, when the polarizing plate 33 is peeled off, the surface protective film 37 can be more reliably prevented from being detached from the polarizing plate 33, so that the polarizing plate 33 can be more reliably suppressed from being broken, and the polarizing plate 33 and the surface protective film 37 are together from the substrate 31. Stripped.

又，本實施形態之剝離方法中，進一步使黏著片53以隔著前述表面保護薄膜37與前述黏著膠帶51重疊的方式，黏附於前述表面保護薄膜37之與前述偏光板33為相反側的外表面37a，將前述偏光板33與前述表面保護薄膜37、前述黏著膠帶51及前述黏著片53一起剝離。Further, in the peeling method of the present embodiment, the adhesive sheet 53 is further adhered to the surface of the surface protective film 37 opposite to the polarizing plate 33 so as to overlap the surface protective film 37 and the adhesive tape 51. The surface 37a peels off the polarizing plate 33 together with the surface protection film 37, the adhesive tape 51, and the adhesive sheet 53.

根據該構成，進一步在表面保護薄膜37之外表面37a黏附黏著片53，藉此剝離偏光板33時，更為補強該偏光板33。藉此，可更確實地抑制偏光板33破裂，並且偏光板33可與表面保護薄膜37一起從基板31剝離。According to this configuration, the adhesive sheet 53 is further adhered to the outer surface 37a of the surface protective film 37, whereby the polarizing plate 33 is further reinforced when the polarizing plate 33 is peeled off. Thereby, the rupture of the polarizing plate 33 can be more surely suppressed, and the polarizing plate 33 can be peeled off from the substrate 31 together with the surface protective film 37.

如以上，根據本實施形態，可抑制偏光板33破裂，可簡便地將該偏光板33與表面保護薄膜37一起從基板31剝離。As described above, according to the present embodiment, the polarizing plate 33 can be prevented from being broken, and the polarizing plate 33 can be easily peeled off from the substrate 31 together with the surface protective film 37.

本實施形態之剝離方法雖如上述，但本發明之剝離方法並非限定於上述實施形態者。Although the peeling method of this embodiment is as described above, the peeling method of the present invention is not limited to the above embodiment.

例如，上述實施形態中，是顯示在偏光板33上黏附黏著膠帶51、在表面保護薄膜37上黏附黏著片53的態樣。可是，另外也可採用不黏附黏著片53，而偏光板33與表面保護薄膜37及黏著膠帶51一起剝離的態樣。For example, in the above embodiment, the adhesive tape 51 is adhered to the polarizing plate 33, and the adhesive sheet 53 is adhered to the surface protective film 37. However, it is also possible to use a pattern in which the adhesive sheet 53 is not adhered and the polarizing plate 33 is peeled off together with the surface protective film 37 and the adhesive tape 51.

又，上述實施形態中，是顯示黏著膠帶51沿著偏光板33之4個端緣34a～34d黏附的態樣。可是，只要黏著膠帶51是沿著至少構成角部35a之2個端緣34a、34b黏附即可，在偏光板33上，該黏著膠帶51黏附之區域的數量沒有特別限定。Further, in the above embodiment, the adhesive tape 51 is adhered along the four end edges 34a to 34d of the polarizing plate 33. However, as long as the adhesive tape 51 is adhered along at least two end edges 34a and 34b constituting the corner portion 35a, the number of the regions where the adhesive tape 51 is adhered to the polarizing plate 33 is not particularly limited.

又，上述實施形態中，是顯示4個黏著片53以隔著表面保護薄膜37與4個黏著膠帶51重疊的方式黏附的態樣。可是，若是以與黏著片51重疊的方式黏附黏著片53，黏著片53之形狀、大小、數量沒有特別限定，只要可因應於黏著片51之數量而適當地設定即可。 例如，黏著片53可使用形成為與表面保護薄膜37相同大小之物，可採用該黏著片黏附於表面保護薄膜37之外表面37a整面的態樣。Further, in the above embodiment, the four adhesive sheets 53 are attached so as to be adhered to the four adhesive tapes 51 via the surface protective film 37. However, if the adhesive sheet 53 is adhered so as to overlap the adhesive sheet 51, the shape, size, and number of the adhesive sheet 53 are not particularly limited, and may be appropriately set in accordance with the number of the adhesive sheets 51. For example, the adhesive sheet 53 may be formed to have the same size as the surface protective film 37, and the adhesive sheet may be adhered to the entire surface 37a of the surface protective film 37.

又，上述實施形態中，雖是採用基板31形成比偏光板33及表面保護薄膜37大，且形成為比偏光板33與表面保護薄膜37相同大小的態樣，但本發明中，該等大小未必限定於上述實施形態。Further, in the above-described embodiment, the substrate 31 is formed larger than the polarizing plate 33 and the surface protective film 37, and is formed to have the same size as the polarizing plate 33 and the surface protective film 37. However, in the present invention, the size is the same. It is not necessarily limited to the above embodiment.

又，黏著膠帶51之間的黏附順序及黏著片53之間的黏附順序也並非特別限定者。Further, the order of adhesion between the adhesive tapes 51 and the order of adhesion between the adhesive sheets 53 are not particularly limited.

又，上述實施形態中，關於偏光板33之端緣34a～34d，是一個一個進行表面保護薄膜37之局部剝離、黏著薄膜51之黏附、表面保護薄膜37往該黏著薄膜51之被蓋及黏附，並且重複。可是，除此之外，亦可使對應偏光板33之端緣34a～34d的表面保護薄膜37之端緣38a～38d側同時局部剝離而固定，藉此露出偏光板33之全部的端緣34a～34d側，並暫時固定在該狀態下剝離之端緣38a～38d側，並且在黏著膠帶51沿著偏光板33之端緣34a～34d黏附後，解除暫時固定，使經局部剝離之表面保護薄膜37之端緣38a～38d側被覆黏附於黏著膠帶51。Further, in the above-described embodiment, the edge edges 34a to 34d of the polarizing plate 33 are partially peeled off by the surface protective film 37, adhered to the adhesive film 51, and the surface protective film 37 is covered and adhered to the adhesive film 51. And repeat. However, in addition to this, the side edges 38a to 38d of the surface protective film 37 corresponding to the edge edges 34a to 34d of the polarizing plate 33 may be partially peeled and fixed at the same time, thereby exposing all the edge 34a of the polarizing plate 33. ～34d side, temporarily fixed to the side edges 38a to 38d of the peeling state in this state, and after the adhesive tape 51 is adhered along the edge edges 34a to 34d of the polarizing plate 33, the temporary fixing is released, and the surface protection by partial peeling is performed. The side edges 38a to 38d of the film 37 are coated and adhered to the adhesive tape 51.

又，上述實施形態中，雖是使用複數個黏著膠帶51，並且依偏光板33之端緣黏附各黏著膠帶51，但除此之外，亦可預先使用沿著複數個端緣形成之1個黏著膠帶，並且其沿著偏光板33之各端緣黏附。又，就黏著片53，亦可同樣地預先使用沿著複數個端緣形成之1個黏著片。Further, in the above-described embodiment, a plurality of adhesive tapes 51 are used, and the adhesive tapes 51 are adhered to the edge of the polarizing plate 33. Alternatively, one of the plurality of edge edges may be used in advance. Adhesive tape is adhered and adhered along each edge of the polarizing plate 33. Further, as for the adhesive sheet 53, one adhesive sheet formed along a plurality of end edges can be used in advance.

其次，一面例示實施例，一面更詳細說明本發明。 〔實施例〕Next, the present invention will be described in more detail while exemplifying the embodiments. [Examples]

使用圖1～3所示之積層板30。 具體而言，偏光板33是使用保護膜45分別隔著具有第2接著劑之接著劑層43而積層形成於偏光子41之兩面的偏光板33（厚度：約100μm）。積層體30是使用基板31隔著第1接著劑積層於前述偏光板33之其中一保護膜45，並且2片表面保護薄膜37隔著第3接著劑積層而形成於另一保護膜45的積層體30。 更具體而言，由保護膜45隔著具有第2接著劑之2個接著劑層43積層於偏光子41之兩面，並且隔片（不圖示）隔著第1接著劑而積層於該保護膜45之其中一保護膜45，表面保護薄膜37隔著第3接著劑而積層形成於另一保護膜45的市售品（TEG1465DU，日東電工公司製），剝離隔片後積層於基材31，藉此形成積層體30。The laminate 30 shown in Figs. 1 to 3 is used. Specifically, the polarizing plate 33 is a polarizing plate 33 (thickness: about 100 μm) which is laminated on both surfaces of the polarizer 41 via the protective film 45 via the adhesive layer 43 having the second adhesive. The laminated body 30 is formed by laminating one of the protective films 45 of the polarizing plate 33 via the first adhesive layer via the substrate 31, and the two protective film layers 37 are laminated on the other protective film 45 via the third adhesive layer. Body 30. More specifically, the protective film 45 is laminated on both surfaces of the polarizer 41 via the two adhesive layers 43 having the second adhesive, and a spacer (not shown) is laminated on the protective layer via the first adhesive. One of the protective films 45 of the film 45 and the surface protective film 37 are laminated on the other protective film 45 (TEG1465DU, manufactured by Nitto Denko Corporation), and the laminated film is laminated on the substrate 31. Thereby, the laminated body 30 is formed.

黏著膠帶51使用於其中一面側貼附有剝離襯墊之雙面膠帶（No.500，日東電工公司製造）。The adhesive tape 51 is used for a double-sided tape (No. 500, manufactured by Nitto Denko Corporation) to which a release liner is attached to one side.

黏著片53使用了與黏著膠帶51同樣的貼附有剝離襯墊之雙面膠帶、及形成為與表面保護薄膜37相同大小（即與偏光板33相同大小）的黏著片53。具體而言，黏著片53使用了在上述市售品（TEG1465DU，日東電工公司製造）之品質檢査（黏附力除外）中被排除的規格外品。 作為黏著片53之上述雙面膠帶之外表面（剝離襯墊之外表面）的摩擦係數比表面保護薄膜37之外表面37a的摩擦係數小。As the adhesive sheet 53, a double-sided tape to which a release liner is attached similarly to the adhesive tape 51, and an adhesive sheet 53 formed to have the same size as the surface protection film 37 (that is, the same size as the polarizing plate 33) are used. Specifically, the adhesive sheet 53 is a specification product that is excluded from the quality inspection (except for adhesion) of the above-mentioned commercial product (TEG1465DU, manufactured by Nitto Denko Corporation). The outer surface of the double-sided tape (the outer surface of the release liner) as the adhesive sheet 53 has a smaller coefficient of friction than the outer surface 37a of the surface protective film 37.

（實施例1） 將表面保護薄膜37局部剝離，以使黏著膠帶51沿著偏光板33之4個端緣34a～34d進行黏附。剝離後，以沿著該端緣34a～34d的方式，且以使各端緣34a～34d與黏著膠帶51之外側端緣齊平的方式，將貼附有剝離襯墊之作為黏著膠帶51的雙面膠帶黏附於偏光板33之外表面33a。黏附後，將該剝離襯墊剝離，使表面保護薄膜37被覆黏附於黏著膠帶51之黏著劑（不圖示）。 進而，以隔著表面保護薄膜37與黏著膠帶51重疊的方式，且以使黏著片53沿著表面保護薄膜37之4個端緣38a～38d的方式，而且以使各端緣38a～38d與黏著片53之外側端緣齊平的方式，將作為黏著片53之貼附有剝離襯墊之雙面膠帶黏附於表面保護薄膜37之外表面37a。再者，該剝離襯墊沒有剝離。 而且，使用如圖14、圖15所示之剝離裝置1，以偏光板33之角部35a為剝離起點P，將偏光板33與表面保護薄膜37、黏著膠帶51及黏著片53一起剝離。以目視觀察此時之表面保護薄膜37從偏光板33的脫離狀況、偏光板33之破裂狀況。 將此重複50次，成功率為90％以上的情況則判斷為良好，以「〇」表示，若成功率在50％以上且寫於90％的情況則判斷為略佳，以「△」表示，小於50％的情況則為不良，以「×」表示，如此來評價。將結果表示於表1。(Example 1) The surface protective film 37 was partially peeled off so that the adhesive tape 51 adhered along the four edge edges 34a to 34d of the polarizing plate 33. After the peeling, the peeling liner is attached as the adhesive tape 51 so as to be along the end edges 34a to 34d and the end edges 34a to 34d are flush with the outer edge of the adhesive tape 51. The double-sided tape is adhered to the outer surface 33a of the polarizing plate 33. After the adhesion, the release liner is peeled off, and the surface protective film 37 is coated and adhered to the adhesive (not shown) of the adhesive tape 51. Further, the surface of the surface protective film 37 is overlapped with the adhesive tape 51 so that the adhesive sheet 53 is along the four end edges 38a to 38d of the surface protective film 37, and the respective end edges 38a to 38d are The double-sided tape to which the release liner 53 is attached as the adhesive sheet 53 is adhered to the outer surface 37a of the surface protective film 37 in such a manner that the outer edge of the adhesive sheet 53 is flush. Furthermore, the release liner was not peeled off. Further, the peeling device 1 shown in Figs. 14 and 15 is used, and the polarizing plate 33 is peeled off together with the surface protective film 37, the adhesive tape 51, and the adhesive sheet 53 with the corner portion 35a of the polarizing plate 33 as the peeling starting point P. The state of detachment of the surface protective film 37 from the polarizing plate 33 and the state of rupture of the polarizing plate 33 at this time were visually observed. This is repeated 50 times. If the success rate is 90% or more, it is judged to be good. It is indicated by "〇". If the success rate is 50% or more and written at 90%, it is judged to be slightly better, and it is indicated by "△". If it is less than 50%, it is bad, and it is represented by "X". The results are shown in Table 1.

（實施例2） 除了黏著片53未黏附於表面保護薄膜37之外，其他與實施例1同樣，使用剝離裝置1，將偏光板33與表面保護薄膜37及黏著膠帶51一起剝離，進行與實施例1同樣的評價。將結果顯示於表1。(Example 2) Except that the adhesive sheet 53 was not adhered to the surface protective film 37, the peeling device 1 was used, and the polarizing plate 33 was peeled off together with the surface protective film 37 and the adhesive tape 51, and was carried out in the same manner as in Example 1. Example 1 was evaluated in the same manner. The results are shown in Table 1.

（實施例3） 以沿著偏光板33之2個端緣34a、34b的方式、且以各端緣34a、34b與黏著膠帶51之外側之端緣齊平的方式，將黏著膠帶51黏附於偏光板33之外表面33a。在黏附後，以隔著表面保護薄膜37與黏著膠帶51重疊的方式，且以黏著片53沿著表面保護薄膜37之端緣38a，38b的方式，而且以黏著片53之外側之端緣與各端緣38a，38b齊平的方式，黏附貼附有剝離襯墊之雙面膠帶作為黏著片53。除該等之外都與實施例1同樣，使用剝離裝置1，將偏光板33與表面保護薄膜37、黏著膠帶51及黏著片53一起剝離，進行與實施例1同樣的評價。將結果顯示於表1。(Example 3) Adhesive tape 51 was adhered to the end edges 34a and 34b of the polarizing plate 33 so that the end edges 34a and 34b were flush with the edge of the outer side of the adhesive tape 51. The outer surface 33a of the polarizing plate 33. After the adhesion, the surface protective film 37 is overlapped with the adhesive tape 51, and the adhesive sheet 53 is along the edge edges 38a, 38b of the surface protective film 37, and the edge of the outer side of the adhesive sheet 53 is used. The double-sided tape to which the release liner is attached is adhered as the adhesive sheet 53 in such a manner that the end edges 38a, 38b are flush. In the same manner as in the first embodiment, the polarizing plate 33 was peeled off together with the surface protective film 37, the adhesive tape 51, and the adhesive sheet 53 in the same manner as in the first embodiment, and the same evaluation as in the first embodiment was carried out. The results are shown in Table 1.

（實施例4） 於表面保護薄膜37之外表面37a整面皆黏附形成為與表面保護薄膜37（即偏光板33）相同大小的黏著片53。除此之外與實施例1同樣，使用剝離裝置1，將偏光板33與表面保護薄膜37、黏著膠帶51及黏著片53一起剝離，進行與實施例1同樣的評價。將結果顯示於表1。(Example 4) An adhesive sheet 53 having the same size as the surface protective film 37 (i.e., the polarizing plate 33) was adhered to the entire surface 37a of the surface protective film 37. In the same manner as in the first embodiment, the polarizing plate 33 was peeled off together with the surface protective film 37, the adhesive tape 51, and the adhesive sheet 53 in the same manner as in the first embodiment, and the same evaluation as in the first embodiment was carried out. The results are shown in Table 1.

（實施例5） 以沿著偏光板33之外表面33a之4個端緣34a～34d的方式，且以該各黏著膠帶51之外側之端緣位於距離各端緣34a～34d 往内側2mm的位置而黏附黏著膠帶51。除此之外則與實施例1同樣，使用剝離裝置1，將偏光板33與表面保護薄膜37、黏著膠帶51及黏著片53一起剝離，進行與實施例1同樣的評價。將結果顯示於表1。(Embodiment 5) The edge of the outer side of the outer surface 33a of the polarizing plate 33 is located along the four end edges 34a to 34d of the polarizing plate 33, and the edge of the outer side of each of the adhesive tapes 51 is located 2 mm inside from the end edges 34a to 34d. Adhesive tape 51 is adhered to the position. In the same manner as in the first embodiment, the polarizing plate 33 was peeled off together with the surface protective film 37, the adhesive tape 51, and the adhesive sheet 53 in the same manner as in the first embodiment, and the same evaluation as in the first embodiment was carried out. The results are shown in Table 1.

（實施例6） 以沿著偏光板33之外表面33a之4個端緣34a～34d的方式，且以該各黏著膠帶51之外側之端緣從各端緣34a～34d朝外側突出50μm的方式黏附黏著膠帶51。除此之外與實施例1同樣，使用剝離裝置1，將偏光板33與表面保護薄膜37、黏著膠帶51及黏著片53一起剝離，進行與實施例1同樣的評價。將結果顯示於表1。(Example 6) The outer edge 33a to 34d of the outer surface 33a of the polarizing plate 33 and the outer edge of each of the adhesive tapes 51 protrude outward by 50 μm from the respective end edges 34a to 34d. The way sticks the adhesive tape 51. In the same manner as in the first embodiment, the polarizing plate 33 was peeled off together with the surface protective film 37, the adhesive tape 51, and the adhesive sheet 53 in the same manner as in the first embodiment, and the same evaluation as in the first embodiment was carried out. The results are shown in Table 1.

（比較例1） 除了在偏光板33之外表面33a未黏附黏著膠帶51之外，其他與實施例1同樣，而使用剝離裝置1，將偏光板33與表面保護薄膜37及黏著片53一起剝離，並進行與實施例1同樣的評價。將結果顯示於表1。(Comparative Example 1) The polarizing plate 33 was peeled off together with the surface protective film 37 and the adhesive sheet 53 by using the peeling device 1 except that the adhesive tape 51 was not adhered to the surface 33a other than the polarizing plate 33. The same evaluation as in Example 1 was carried out. The results are shown in Table 1.

（比較例2） 除了在偏光板33之外表面33a未黏附黏著膠帶51之外，其他皆與實施例4同樣，而使用剝離裝置1，將偏光板33與表面保護薄膜37及黏著片53一起剝離，並進行與實施例1同樣的評價。將結果顯示於表1。(Comparative Example 2) The polarizing plate 33 was used together with the surface protective film 37 and the adhesive sheet 53 except that the adhesive tape 51 was not adhered to the surface 33a other than the polarizing plate 33, and the peeling device 1 was used. The same evaluation as in Example 1 was carried out. The results are shown in Table 1.

（比較例3） 除了在偏光板33之外表面33a未黏附黏著膠帶51之外皆與實施例2同樣，使用剝離裝置1，將偏光板33與表面保護薄膜37一起剝離，進行與實施例1同樣的評價。將結果顯示於表1。                   【表1】 (Comparative Example 3) The polarizing plate 33 was peeled off together with the surface protective film 37 using the peeling device 1 except that the adhesive tape 51 was not adhered to the surface 33a of the polarizing plate 33, and the polarizing plate 33 was peeled off together with the surface protective film 37. The same evaluation. The results are shown in Table 1. 【Table 1】

如表1所示可知，藉由將黏著膠帶51以沿著偏光板33之至少2個端緣34a、34b的方式黏附於偏光板33之外表面33a，可抑制偏光板33之破裂，並且良好地從基板31剝離偏光板33。 可知藉由將黏著膠帶51以沿著偏光板33之4個端緣34a～34d的方式黏附於偏光板33之外表面33a，可更良好地自基板31剝離偏光板33。 可知藉由使偏光板33之供黏著膠帶51沿著黏附之各端緣與對應各端緣之黏著膠帶51之外側端緣齊平，可更良好地自基板31剝離偏光板33。 又，可知藉由以偏光板33之供黏著膠帶51沿著黏附之各端緣34a～34d為準，使對應該各端緣34a～34d之黏著膠帶51之外側端緣以小於偏光板33厚度之長度自各端緣朝外側突出，也可更良好地自基板31剝離偏光板33。 可知藉由在表面保護薄膜37之外表面37a整面黏附黏著片53，可更良好地自基板31剝離偏光板33。As shown in Table 1, it is possible to suppress cracking of the polarizing plate 33 by adhering the adhesive tape 51 to the outer surface 33a of the polarizing plate 33 along at least two end edges 34a, 34b of the polarizing plate 33, and it is good. The polarizing plate 33 is peeled off from the substrate 31. It is understood that the polarizing plate 33 can be more easily peeled off from the substrate 31 by adhering the adhesive tape 51 to the outer surface 33a of the polarizing plate 33 along the four end edges 34a to 34d of the polarizing plate 33. It is understood that the polarizing plate 33 can be peeled off from the substrate 31 more favorably by making the adhesive tape 51 of the polarizing plate 33 flush with the outer edge of the adhesive tape 51 corresponding to each edge along the respective end edges of the adhesive. Moreover, it can be seen that the outer edge of the adhesive tape 51 corresponding to each of the end edges 34a to 34d is smaller than the thickness of the polarizing plate 33 by the adhesive tape 51 of the polarizing plate 33 along the respective edge 34a to 34d of the adhesion. The length protrudes outward from the respective end edges, and the polarizing plate 33 can be peeled off from the substrate 31 more favorably. It is understood that the polarizing plate 33 can be peeled off from the substrate 31 more favorably by adhering the adhesive sheet 53 to the entire surface 37a of the surface protective film 37.

如實施例2，相較於在表面保護薄膜37之外表面37a未黏附有黏著片53的情況，以沿著2個端緣38a，38b的方式在表面保護薄膜37之外表面37a黏附有黏著片53的情況對剝離輔助構件7的滑動性良好。又，相較於以沿著2個端緣38a，38b的方式在表面保護薄膜37之外表面37a黏附有黏著片53的情況，以沿著4個端緣38a～38d的方式在表面保護薄膜37之外表面37a黏附有黏著片53的情況及在表面保護薄膜37之外表面37a整面黏附有黏著片53的情況對剝離輔助構件7的滑動性良好。As in the case of the embodiment 2, in the case where the adhesive sheet 53 is not adhered to the surface 37a other than the surface protective film 37, adhesion is adhered to the outer surface 37a of the surface protective film 37 along the two end edges 38a, 38b. In the case of the sheet 53, the slidability of the peeling auxiliary member 7 is good. Further, in the case where the adhesive sheet 53 is adhered to the outer surface 37a of the surface protective film 37 along the two end edges 38a, 38b, the surface protective film is formed along the four end edges 38a to 38d. When the adhesive sheet 53 is adhered to the outer surface 37a of the outer surface 37a, and the adhesive sheet 53 is adhered to the entire outer surface 37a of the surface protective film 37, the slidability of the peeling auxiliary member 7 is good.

如實施例4，相較於在表面保護薄膜37之外表面37a整面黏附黏著片53的情況，以沿著表面保護薄膜37之端緣的方式在表面保護薄膜37之外表面37a黏附黏著片53的情況在設備面、作業面簡便。As in the case of the embodiment 4, the adhesive sheet 53 is adhered to the outer surface 37a of the surface protective film 37 along the edge of the surface protective film 37 as compared with the case where the adhesive sheet 53 is adhered to the entire surface 37a of the surface protective film 37. The case of 53 is simple on the equipment surface and work surface.

使用之偏光板33之端緣較粗的狀態（以微觀來看成毛邊之狀態）。因此，如實施例5，相較於在偏光板33之端緣較内側黏附有黏著膠帶51的情況，如實施例1～4、6，以使偏光板33之供黏著膠帶51沿著黏附之各端緣與對應各端緣之黏著膠帶51之外側端緣齊平的方式黏附黏著膠帶51的情況，能以黏著膠帶51補強該較粗的部分，因此可更為抑制破裂。 又，如實施例6，以偏光板33之供黏著膠帶51沿著黏附之各端緣34a～34d為準，使對應該各端緣34a～34d之黏著膠帶51之外側端緣以小於偏光板33厚度之長度自各端緣朝外側突出時，也與實施例1～4同樣，偏光板33之端緣較粗的部分可以黏著膠帶51補強。藉此，相較於實施例5，實施例6可更為抑制破裂。The edge of the polarizing plate 33 used is in a relatively thick state (a state of being burred by microscopic view). Therefore, as in the case of the embodiment 5, as in the case where the adhesive tape 51 is adhered to the inner side of the edge of the polarizing plate 33, as in the first to fourth embodiments, the adhesive tape 51 of the polarizing plate 33 is adhered along the adhesive tape 51. When the end edges are adhered to the outer edge of the adhesive tape 51 corresponding to each end edge, the adhesive tape 51 is adhered, and the thick portion can be reinforced by the adhesive tape 51, so that the crack can be more suppressed. Further, as in the sixth embodiment, the adhesive tape 51 of the polarizing plate 33 is along the respective end edges 34a to 34d of the adhesive, so that the outer edge of the adhesive tape 51 corresponding to each of the end edges 34a to 34d is smaller than the polarizing plate. When the length of the thickness of 33 is protruded outward from the respective end edges, as in the first to fourth embodiments, the thicker end portion of the polarizing plate 33 can be reinforced by the adhesive tape 51. Thereby, Example 6 can suppress cracking more than in Example 5.

1‧‧‧剝離裝置
3‧‧‧工作台構件
5‧‧‧剝離構件
7‧‧‧剝離輔助構件
30‧‧‧積層體
31‧‧‧基板
31a‧‧‧其中一面
33‧‧‧偏光板
33a‧‧‧外表面
34a～34d‧‧‧端緣
35a～35d‧‧‧角部
37‧‧‧表面保護薄膜
37a‧‧‧外表面
38a～38d‧‧‧端緣
39a～39d‧‧‧角部
51‧‧‧黏著膠帶
53‧‧‧黏著片
P‧‧‧剝離起點1‧‧‧ peeling device
3‧‧‧Workbench components
5‧‧‧ peeling members
7‧‧‧ peeling auxiliary members
30‧‧‧Layered body
31‧‧‧Substrate
31a‧‧‧ one side
33‧‧‧Polar plate
33a‧‧‧Outer surface
34a~34d‧‧‧ edge
35a～35d‧‧‧ corner
37‧‧‧Surface protection film
37a‧‧‧Outer surface
38a～38d‧‧‧end edge
39a～39d‧‧‧ corner
51‧‧‧Adhesive tape
53‧‧‧Adhesive tablets
P‧‧‧ peeling starting point

圖1是顯示使用本實施形態之剝離裝置及剝離方法之積層體的概略俯視圖。 圖2是顯示圖1之積層體之層構成一例的概略側視圖。 圖3是顯示圖1之積層體中偏光板之層構成一例的概略側視圖。 圖4是一概略俯視圖，其顯示表面保護薄膜之端緣部已從偏光板剝離，使得偏光板中構成剝離起點之2個端緣之其中一端緣露出之狀態。 圖5是顯示黏著膠帶沿著露出之偏光板的端緣黏附之狀態的概略俯視圖。 圖6是顯示繼圖5之狀態後使表面保護薄膜被覆黏著膠帶並且黏附於該黏著膠帶之狀態的概略俯視圖。 圖7是一概略俯視圖，其顯示表面保護薄膜之端緣部已從偏光板剝離，而使偏光板中構成作為剝離起點之角部之2個端緣中的另一端緣露出之狀態。 圖8是顯示黏著膠帶沿著露出之偏光板的端緣黏附之狀態的概略俯視圖。 圖9是顯示繼圖8之狀態後使表面保護薄膜被覆黏著膠帶並且黏附於該黏著膠帶之狀態的概略俯視圖。 圖10是一概略俯視圖，其顯示黏著膠帶沿著偏光板之4個端緣黏附後，使表面保護薄膜被覆黏著膠帶並且黏附於該黏著膠帶之狀態。 圖11是一概略俯視圖，其顯示黏著片以隔著表面保護薄膜與圖5所黏附之黏著膠帶重疊的方式黏附於表面保護薄膜之狀態。 圖12是一概略俯視圖，其顯示黏著片以隔著表面保護薄膜與圖8所黏附之黏著膠帶重疊的方式黏附於表面保護薄膜之狀態。 圖13是一概略俯視圖，其顯示4個黏著片以隔著表面保護薄膜與圖10所示之4個黏著膠帶重疊的方式黏附於表面保護薄膜之狀態。 圖14是一概略俯視圖，其顯示已從剝離起點剝離之偏光板捲掛於使用於本實施形態之剝離方法的剝離裝置之狀態。 圖15是一概略側視圖，其顯示已從剝離起點剝離之偏光板與表面保護薄膜、黏著膠帶及黏著片一起捲掛於使用於本實施形態之剝離方法的剝離裝置之狀態。 圖16是一概略側視圖，其顯示藉由捲繞構件之旋轉讓偏光板與表面保護薄膜、黏著膠帶及黏著片一起進一步剝離，並且使已剝離之偏光板與表面保護薄膜、黏著膠帶及黏著片一起依序捲繞之狀態。 圖17是顯示藉由捲繞構件之旋轉使偏光板與表面保護薄膜、黏著膠帶及黏著片一起全部剝離之狀態的概略側視圖。 圖18是一概略側視圖，其放大顯示藉由本實施形態之剝離方法將偏光板與表面保護薄膜、黏著膠帶及黏著片一起剝離之狀態。 圖19是放大顯示藉由習知剝離方法將偏光板與表面保護薄膜一起剝離之狀態的概略側視圖。Fig. 1 is a schematic plan view showing a laminate using the peeling device and the peeling method of the embodiment. Fig. 2 is a schematic side view showing an example of a layer configuration of the laminated body of Fig. 1; Fig. 3 is a schematic side view showing an example of a layer configuration of a polarizing plate in the laminated body of Fig. 1; 4 is a schematic plan view showing that the edge portion of the surface protective film has been peeled off from the polarizing plate, so that one end edge of the two edge edges constituting the peeling starting point of the polarizing plate is exposed. Fig. 5 is a schematic plan view showing a state in which an adhesive tape is adhered along an edge of an exposed polarizing plate. Fig. 6 is a schematic plan view showing a state in which a surface protective film is coated with an adhesive tape and adhered to the adhesive tape in the state of Fig. 5; FIG. 7 is a schematic plan view showing that the edge portion of the surface protective film has been peeled off from the polarizing plate, and the other end edge of the two edge portions constituting the corner portion as the peeling starting point in the polarizing plate is exposed. Fig. 8 is a schematic plan view showing a state in which an adhesive tape is adhered along an edge of an exposed polarizing plate. Fig. 9 is a schematic plan view showing a state in which a surface protective film is coated with an adhesive tape and adhered to the adhesive tape, following the state of Fig. 8. Fig. 10 is a schematic plan view showing the state in which the adhesive tape is adhered to the adhesive tape and adhered to the adhesive tape after the adhesive tape is adhered along the four end edges of the polarizing plate. Fig. 11 is a schematic plan view showing the state in which the adhesive sheet is adhered to the surface protective film in such a manner that the surface protective film overlaps the adhesive tape adhered to Fig. 5. Fig. 12 is a schematic plan view showing the state in which the adhesive sheet is adhered to the surface protective film in such a manner that the surface protective film overlaps the adhesive tape adhered to Fig. 8. Fig. 13 is a schematic plan view showing the state in which four adhesive sheets are adhered to the surface protective film in such a manner that the surface protective film overlaps with the four adhesive tapes shown in Fig. 10. Fig. 14 is a schematic plan view showing a state in which a polarizing plate which has been peeled off from a peeling starting point is wound around a peeling device used in the peeling method of the embodiment. Fig. 15 is a schematic side view showing a state in which a polarizing plate which has been peeled off from a peeling starting point is wound around a surface protective film, an adhesive tape, and an adhesive sheet together with a peeling device used in the peeling method of the present embodiment. Figure 16 is a schematic side view showing that the polarizing plate is further peeled off together with the surface protective film, the adhesive tape and the adhesive sheet by the rotation of the winding member, and the peeled polarizing plate and the surface protective film, the adhesive tape and the adhesive are adhered. The sheets are wound together in sequence. Fig. 17 is a schematic side view showing a state in which the polarizing plate is completely peeled off together with the surface protective film, the adhesive tape, and the adhesive sheet by the rotation of the winding member. Fig. 18 is a schematic side view showing, in an enlarged manner, a state in which the polarizing plate is peeled off together with the surface protective film, the adhesive tape, and the adhesive sheet by the peeling method of the embodiment. Fig. 19 is a schematic side view showing, in an enlarged manner, a state in which a polarizing plate and a surface protective film are peeled off together by a conventional peeling method.

30‧‧‧積層體 30‧‧‧Layered body

33‧‧‧偏光板 33‧‧‧Polar plate

33a‧‧‧外表面 33a‧‧‧Outer surface

34a~34c‧‧‧端緣 34a~34c‧‧‧ edge

37‧‧‧表面保護薄膜 37‧‧‧Surface protection film

37a‧‧‧外表面 37a‧‧‧Outer surface

38a、38b‧‧‧端緣 38a, 38b‧‧‧ edge

51‧‧‧黏著膠帶 51‧‧‧Adhesive tape

P‧‧‧剝離起點 P‧‧‧ peeling starting point

Claims (5)

一種剝離方法，是從具有基板及黏附於該基板之其中一面上之偏光板的矩形積層體將前述偏光板剝離； 前述積層體更具有表面保護薄膜，其係可剝離地黏附於前述偏光板之與前述基板為相反側之外表面； 將前述表面保護薄膜局部剝離，以使黏著膠帶黏附於前述偏光板之外表面， 以令黏著膠帶沿著前述偏光板之4個端緣中至少構成一角部之2個端緣的方式，將前述黏著膠帶黏附於前述偏光板之外表面， 使前述表面保護薄膜被覆黏附於前述黏著膠帶， 以前述角部為剝離起點將前述偏光板與前述表面保護薄膜及前述黏著膠帶一起剝離。A peeling method for peeling off the polarizing plate from a rectangular laminated body having a substrate and a polarizing plate adhered to one surface of the substrate; the laminated body further having a surface protective film which is releasably adhered to the polarizing plate a surface opposite to the substrate; the surface protective film is partially peeled off, so that the adhesive tape is adhered to the outer surface of the polarizing plate, so that the adhesive tape forms at least one corner along the four end edges of the polarizing plate. Adhesive tape is adhered to the outer surface of the polarizing plate, and the surface protective film is coated and adhered to the adhesive tape, and the polarizing plate and the surface protective film are The aforementioned adhesive tape is peeled off together. 如請求項1之剝離方法，其以下述方式將前述黏著膠帶黏附於前述偏光板之外表面：使前述偏光板之供前述黏著膠帶沿著黏附之各端緣與對應該各端緣之前述黏著膠帶之外側端緣齊平；或者，以前述偏光板之供前述黏著膠帶沿著黏附的各端緣為準，使對應該各端緣之前述黏著膠帶之外側端緣以小於前述偏光板厚度之長度自前述各端緣朝外側突出。The peeling method of claim 1, wherein the adhesive tape is adhered to the outer surface of the polarizing plate in such a manner that the adhesive tape of the polarizing plate is adhered to the edge of each of the adhesive edges along the respective end edges of the polarizing plate. The outer edge of the adhesive tape is flush with the outer edge of the adhesive tape; or the outer edge of the adhesive tape corresponding to each end edge is smaller than the thickness of the polarizing plate. The length protrudes outward from the aforementioned end edges. 如請求項1或2之剝離方法，其是將前述黏著膠帶沿著前述偏光板之4個端緣黏附於前述偏光板之外表面。The peeling method of claim 1 or 2, wherein the adhesive tape is adhered to the outer surface of the polarizing plate along the four end edges of the polarizing plate. 如請求項1或2之剝離方法，其進一步將黏著片以隔著前述表面保護薄膜與前述黏著膠帶重疊的方式黏附於前述表面保護薄膜之與前述偏光板為相反側之外表面；並且， 將前述偏光板與前述表面保護薄膜、前述黏著膠帶及前述黏著片一起剝離。The peeling method of claim 1 or 2, which further adheres the adhesive sheet to the outer surface of the surface protective film opposite to the polarizing plate so as to overlap the surface protective film and the adhesive tape; and The polarizing plate is peeled off together with the surface protective film, the adhesive tape, and the adhesive sheet. 如請求項3之剝離方法，其進一步將黏著片以隔著前述表面保護薄膜與前述黏著膠帶重疊的方式黏附於前述表面保護薄膜之與前述偏光板為相反側之外表面；並且， 將前述偏光板與前述表面保護薄膜、前述黏著膠帶及前述黏著片一起剝離。According to the peeling method of claim 3, the adhesive sheet is further adhered to the outer surface of the surface protective film opposite to the polarizing plate so as to overlap the surface protective film and the adhesive tape; and the polarized light is used. The plate is peeled off together with the surface protective film, the adhesive tape, and the adhesive sheet.