JP6279093B2 - Polarizing plate, image display device, and manufacturing method of polarizing plate - Google Patents

Description

  The present invention relates to a polarizing plate, an image display device, and a method for manufacturing a polarizing plate.

  Conventionally, a polarizing plate is known as one of optical components constituting a liquid crystal display device or the like. In general, a polarizing plate has a protective film laminated on one side or both sides of a polarizer to compensate for the mechanical strength, thermal stability, water resistance, and the like of the polarizer. For example, in Patent Document 1, a transparent protective layer (protective film) is provided on one or both sides of a polarizer as a polymer coating layer or a film laminate layer.

JP 2002-303730 A

  However, although the intended protective effect is obtained for the main surface of the polarizer on which the protective film is laminated, the end portion (side surface side) of the polarizer is not sufficiently protected. In fact, scratches and cracks may occur at the ends of the polarizer when the polarizing plate is attached to the liquid crystal cell or during subsequent handling.

  Then, an object of this invention is to provide the polarizing plate with which the edge part of the polarizer was fully protected, and the manufacturing method of the polarizing plate. Moreover, it aims at providing an image display apparatus provided with the said polarizing plate.

  The present invention includes a polarizer and a protective film laminated on both sides thereof, and the protective films are all formed in a predetermined shape, and the protective films are respectively formed on the entire surface of one side of the polarizer. Provided is a polarizing plate that is laminated and at least a part of an end of a polarizer is located inside an end of at least one protective film.

  In this polarizing plate, since the edge part of a polarizer is located inside the edge part of at least one protective film, the edge part of a polarizer is physically protected. Therefore, when the side surface of the polarizing plate receives an impact during the handling of the polarizing plate, it is possible to prevent the end of the polarizer from being scratched or cracked.

  In this invention, the edge part of at least one part of a polarizer may be located inside the edge part of both protective films. In this case, since the edge part of a polarizer is protected from both surfaces of a polarizer, it is further prevented that a crack and a crack arise in the edge part of a polarizer.

  Moreover, all the edge parts of a polarizer may be located inside the edge part of at least one protective film. In this case, all ends of the polarizer are protected.

  The polarizing plate of the present invention may have a shape in plan view that matches the shape of the region to which the polarizing plate is attached, for example, a quadrangle in plan view. Such a shape is easy to apply to various articles such as a liquid crystal display device.

  In the polarizing plate of the present invention, a separator is laminated via an adhesive layer on the side where the polarizer of one of the protective films is not laminated, and the side where the polarizer of the other protective film is not laminated. A temporary protective film may be laminated. In this case, the protective film is prevented from being damaged and worn, and when the polarizing plate is used, the separator is peeled off to expose the pressure-sensitive adhesive layer, and the polarizing plate can be adhered to other articles by the adhesive force. it can.

  The present invention provides an image display device comprising the polarizing plate. For example, even when a liquid crystal display device in which the polarizing plate is attached to a liquid crystal cell or the like is configured, the end of the polarizer is physically protected.

  In the present invention, a polarizer is laminated on the first protective film formed into a predetermined shape so that the entire surface of one side is covered with the first protective film, and the other polarizer is attached to the polarizer. A method of manufacturing a polarizing plate, wherein a second protective film is laminated so as to cover the entire surface of one side, wherein the polarizer is at least a part of at least one of the first protective film and the second protective film. Provided is a method for producing a polarizing plate, in which a first protective film, a polarizer, and a second protective film are laminated so as to be located on the inner side of the end portion.

  With this manufacturing method, the polarizing plate can be manufactured.

  ADVANTAGE OF THE INVENTION According to this invention, the polarizing plate with which the edge part of the polarizer was fully protected and the manufacturing method of the polarizing plate can be provided. In addition, an image display device including the polarizing plate can be provided.

It is a perspective view of the polarizing plate of the 1st Embodiment of this invention. (A) is IIa-IIa sectional drawing of FIG. (B) is IIb-IIb sectional drawing of FIG. It is sectional drawing of the polarizing plate of the 2nd Embodiment of this invention. It is sectional drawing of a liquid crystal display device.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same part or an equivalent part, and the overlapping description is abbreviate | omitted. The dimensional ratios in the drawings do not necessarily match the actual ones, and in particular, the thickness is exaggerated.

<First Embodiment>
As shown in FIGS. 1 and 2, the polarizing plate 1 </ b> A of the present embodiment is formed by laminating protective films 3 and 3 on both surfaces of a polarizer 2 formed in a thin film shape. The protective films 3 and 3 are both formed in the same rectangular shape in plan view, and this shape is also the appearance of the polarizing plate 1A. That is, the polarizing plate 1A has a rectangular shape in plan view.

  The size of the main surface of the polarizing plate 1A, that is, the size of the protective films 3 and 3 can be arbitrarily set according to the application target of the polarizing plate 1A. For example, the length of the diagonal line is 5 to 250 cm, 10 to 150 cm, and 12 to 100 cm. Further, the ratio of the lengths of adjacent sides, that is, the aspect ratio of the polarizing plate 1A is preferably 1: 9 to 5: 5, more preferably 2: 8 to 5: 5, and 3: 7. More preferably, it is ˜5: 5.

  The end portion 2a of the polarizer 2 is positioned so as to be recessed inwardly of the end portions 3a and 3a of the protective films 3 and 3 over the entire circumference. That is, in the cross-sectional view shown in FIG. 2, the side surface of the polarizing plate 1 </ b> A has a concave shape in which the side surface of the polarizer 2 is recessed with respect to the side surfaces of the protective films 3 and 3. Here, it is preferable that the edge part 2a of the polarizer 2 is located inside 1-500 micrometers from the edge part 3a, 3a of the protective films 3 and 3, and it is located more inside 1-300 micrometers. Preferably, it is more preferably located inside 1 to 50 μm. When the end 2a of the polarizer 2 is located within these ranges, the effect of physically protecting the end 2a of the polarizer 2 is particularly high, and a wide display surface is ensured even when an image display device is configured. can do.

  As for the polarizer 2, it is preferable that the edge part 2a of the polarizer 2 is located in the inner side with the same length with respect to the edge part 3a of the protective film 3 over the perimeter. If the length is not the same over the entire circumference, the polarizing plate 1A has a different lamination state depending on the location, and it is expected that when the curling occurs in the polarizing plate 1A, the curling becomes complicated. Therefore, it is preferable that the side surface of the polarizing plate 1 </ b> A is recessed with the same length as the side surface of the protective films 3 and 3 on the entire side of the polarizer 2.

  Further, the polarizer 2 may be a stretched film, in which case the end 2a of the polarizer 2 on the side surface perpendicular to the direction of the optical axis (absorption axis) is the end 3a of the protective film 3, 3. It is preferable that it is located inside 3a. In general, a side surface parallel to the optical axis has high impact resistance, but a side surface perpendicular to the optical axis or a side surface having an inclination (for example, 40 ° to 140 °) has low impact resistance. Therefore, when the end 2a of the polarizer 2 is positioned on the inner side of the ends 3a and 3a of the protective films 3 and 3 on the side surface perpendicular to the optical axis, the end 2a of the polarizer 2 is protected. The effect is particularly achieved.

  In the side surface of the polarizing plate 1A, it is preferable that the portion where the side surface of the polarizer 2 is recessed with respect to the side surfaces of the protective films 3 and 3 is not filled with other members. That is, it is preferable that the side surface of the polarizer 2 is open and is in contact with the outside air. If an adhesive or the like, which will be described later, protrudes from the portion, there is a possibility that other portions of the polarizing plate 1A and peripheral equipment to which the polarizing plate 1A is applied are contaminated. Moreover, the protective film 3 by the heat | fever at the time of a processing process (laser cutting, heat cutting, etc.), the melt | dissolution of the polarizer 2, etc., the recessed part in the edge part of polarizing plate 1A by the protruding protective films 3 and 3 itself (the said If the (part) is filled, the degree of freedom at the end portion of the polarizing plate 1A is reduced, and it is considered that the end portion may cause a defect such as a wavy curl. Moreover, since the said part which is an interference part with respect to an impact lose | disappears, there exists a possibility that an impact may be transmitted to the side surface of the polarizer 2 directly. Further, when a melt such as the protective film 3 or the polarizer 2 protrudes from the portion due to heat, the polarization performance at the end of the polarizing plate 1A may be deteriorated.

  Lamination | stacking with the polarizer 2 and the protective film 3 may be comprised by bonding the polarizer 2 and the protective film 3 which were shape | molded in the film form through the adhesive agent. 1 and 2 do not show the adhesive layer.

  As the material of the polarizer 2, a known material that has been conventionally used in the production of polarizing plates can be used. For example, polyvinyl alcohol resin, polyvinyl acetate resin, ethylene / vinyl acetate (EVA) resin, polyamide Examples thereof include resins and polyester resins. Of these, polyvinyl alcohol resins are preferred. When forming into a film shape for bonding with the protective film 3, it is preferable that the uniaxially stretched film is dyed with iodine or a dichroic dye and then treated with boric acid. As will be described later, the film-like polarizer can be cut into an arbitrary size and used at the time of producing the polarizing plate. The film-like polarizer 2 produced from these materials has low mechanical strength, thermal stability, and water resistance, and is particularly low at the end of the film. For this reason, the end of the polarizer 2 is likely to be cracked or scratched by handling during the production of the polarizing plate.

  The thickness of the polarizer 2 is preferably 2 to 75 μm, more preferably 2 to 50 μm, and still more preferably 2 to 30 μm.

  The protective film 3 is a film that prevents the main surface and end of the polarizer 2 from cracking and scratching. Here, the “protective film” refers to a film physically laminated at a position closest to the polarizer 2 among various films that can be laminated on the polarizer 2.

  The protective film 3 can be composed of various transparent resin films known in the field of polarizing plates. For example, cellulose resin whose typical example is triacetyl cellulose, polyolefin resin whose typical example is polypropylene resin, cyclic olefin resin whose typical example is norbornene resin, acrylic whose typical example is polymethyl methacrylate resin Examples thereof include polyester resins and polyester resins having polyethylene terephthalate resins as representative examples. Among these, cellulose resin is representative.

  The protective film 3 may be a film having no optical function, or may be a film having an optical function such as a retardation film or a brightness enhancement film.

  The thickness of the protective film 3 is preferably 5 to 90 μm, more preferably 5 to 80 μm, and still more preferably 5 to 50 μm.

  When an adhesive is used in the lamination of the polarizer 2 and the protective film 3, various adhesives conventionally used for manufacturing polarizing plates can be used as the adhesive. For example, an epoxy resin that does not contain an aromatic ring in the molecule is preferable from the viewpoint of weather resistance, refractive index, cationic polymerizability, and the like. Moreover, what hardens | cures by irradiation of active energy ray (an ultraviolet ray or a heat ray) is preferable.

  As an epoxy resin, a hydrogenated epoxy resin, an alicyclic epoxy resin, an aliphatic epoxy resin, etc. are preferable, for example. For epoxy resins, polymerization initiators (for example, photocationic polymerization initiators for polymerization by UV irradiation, thermal cationic polymerization initiators for polymerization by heat ray irradiation), and other additives (sensitizers, etc.) Can be added to prepare an epoxy resin composition for coating.

  As the adhesive, acrylic resins such as acrylamide, acrylate, urethane acrylate, and epoxy acrylate, and polyvinyl alcohol-based water-based adhesives can also be used.

  The polarizing plate 1A is bonded to one side or both sides of a display cell (image display element) such as a liquid crystal cell. The polarizing plate 1 </ b> A can further include another optical layer laminated on the protective film 3. As another optical layer, a reflective polarizing film that transmits a certain kind of polarized light and reflects polarized light having the opposite properties; a film with an antiglare function having an uneven surface; a film with a surface antireflection function; surface A reflective film having a reflective function; a transflective film having both a reflective function and a transmissive function; and a viewing angle compensation film.

  The thickness of the polarizing plate 1A comprising three layers of the polarizer 2 and the protective films 3 and 3 is preferably 10 to 500 μm, more preferably 10 to 300 μm, and further preferably 10 to 200 μm. preferable.

  The polarizing plate 1A can be manufactured, for example, as follows. First, two protective films 3 and 3 are cut out into a rectangle from a long film roll made of a material constituting the protective film 3. The size and aspect ratio of the rectangle to be cut out are determined according to the application target of the polarizing plate 1A. An adhesive is applied to one side of one protective film (first protective film) 3. The region where the adhesive is applied is not the entire surface of the protective film 3, but the region where the film-like polarizer 2 is laminated.

  Next, the polarizer 2 is cut out into a rectangle from a long film roll made of a material constituting the polarizer 2. The size of the rectangle to be cut out is smaller than the size of the protective film 3. As an amount to be reduced, it is assumed that the end 2a of the polarizer 2 is to be recessed inwardly of the end 3a of the protective film 3. The cut-out film-like polarizer 2 is laminated on the surface of the protective film 3 coated with an adhesive. The lamination here is performed so that the entire surface of one side of the polarizer 2 enters the inside of the surface of the protective film 3. Here, when viewed from the protective film 3 side, the polarizer 2 is covered with the protective film. When an active energy ray-curable resin is used as the adhesive, the adhesive is cured by irradiating active energy rays here.

  Next, an adhesive is applied to the entire surface of the other side of the polarizer, and the remaining protective film (second protective film) 3 is laminated. Lamination | stacking of the protective film 3 here is performed so that the whole surface of the single side | surface of the polarizer 2 may be covered with the surface of the protective film 3. FIG. When the active energy ray-curable resin is used as the adhesive, the active energy ray is irradiated here to cure the adhesive.

  The polarizing plate 1A is manufactured by the above procedure.

  In the polarizing plate 1 </ b> A described above, the end 2 a of the polarizer 2 is positioned inside the end 3 a of the protective film 3, so that the end of the polarizer 2 is physically protected. Accordingly, in handling such as when the polarizing plate 1A is attached to a liquid crystal cell, for example, when the side surface of the polarizing plate 1A receives an impact, only the end portion 3a of the protective film 3 receives the impact, and the polarizer 2 Scratches and cracks are prevented from occurring at the ends of the. This effect is also exhibited in further handling after the polarizing plate 1A is attached to a liquid crystal cell or the like. Moreover, it contributes to the durability improvement of the heat shock test of the polarizing plate 1A.

  Further, the polarizing plate 1 </ b> A has an end portion 2 a of the polarizer 2 protected by the end portions 3 a and 3 a of the protective films 3 and 3 laminated on both surfaces of the polarizer 2. The effect is favorably exhibited in the tendency to change. That is, when the frame of the liquid crystal cell to which the polarizing plate 1A is attached has a normal width, the liquid crystal cell itself has a function of protecting the polarizer 2 from physical shock, but the liquid crystal cell has a narrow frame. If it exists, the effect of the protection becomes small. In this case, the ratio that the end 3a of the protective film 3 on the liquid crystal cell side contributes to the protection of the end 2a of the polarizer 2 is increased. In addition, when the length of the end 2a of the polarizer 2 located on the inner side of the ends 3a and 3a of the protective films 3 and 3 is 500 μm or less, the TV screen or mobile terminal (cell phone, smartphone, etc.) When applied to a screen, it is easy to secure a wide display surface.

  Since the end 2a of the polarizer 2 is located on the inner side of the end 3a of the protective film 3 over the entire circumference, the above effect is exhibited over the entire circumference of the polarizing plate 1A.

  Moreover, since the polarizing plate 1A has a rectangular shape in plan view, it can be easily applied to various articles such as a liquid crystal display device.

<Second Embodiment>
In the polarizing plate of the present invention, as shown in FIG. 3, a separator 4 and a temporary protective film 6 may be further laminated on a laminate of the polarizer 2 and the protective film 3.

  The polarizing plate 1 </ b> B of the second embodiment is disposed on one side of the polarizing plate 1 </ b> A of the first embodiment (that is, on the surface of the one protective film 3 on which the polarizer 2 is not laminated) via the pressure-sensitive adhesive layer 5. The separator 4 is laminated. A temporary protective film 6 is laminated on the other surface of the polarizing plate 1A (that is, on the surface of the other protective film 3 on which the polarizer 2 is not laminated).

  The pressure-sensitive adhesive layer 5 is a layer that functions when the polarizing plate 1B is attached to another article (for example, a liquid crystal cell). The pressure-sensitive adhesive layer 5 can be composed of acrylic resin, silicone resin, polyester, polyurethane, polyether, or the like.

  The thickness of the pressure-sensitive adhesive layer 5 is preferably 2 to 500 μm, more preferably 2 to 200 μm, and still more preferably 2 to 50 μm.

  As a method of laminating the pressure-sensitive adhesive layer 5 on the protective film 3, for example, a method of applying a solution containing the resin or any additive component to the protective film 3 may be used. After forming, the method of laminating | stacking on the protective film 3 may be used. The end 5a of the pressure-sensitive adhesive layer 5 is preferably aligned with the end 3a of the protective film 3 over the entire circumference.

  The separator 4 is a peelable film that is stuck for the purpose of protecting the pressure-sensitive adhesive layer 5 and preventing adhesion of foreign matters, and is peeled off when the polarizing plate 1B is used to expose the pressure-sensitive adhesive layer 5. The separator 4 can be made of, for example, a polyethylene resin such as polyethylene, a polypropylene resin such as polypropylene, a polyester resin such as polyethylene terephthalate, or the like. Among these, a stretched film of polyethylene terephthalate is preferable.

  The end 4a of the separator 4 is preferably aligned with the end 5a of the pressure-sensitive adhesive layer 5 over the entire circumference. Further, the separator 4 may be subjected to a release treatment with a silicone resin or the like on the surface in contact with the pressure-sensitive adhesive layer 5 so that the separator 4 can be easily peeled off when the polarizing plate 1B is used.

  The thickness of the separator 4 is preferably 5 to 200 μm, more preferably 5 to 150 μm, and still more preferably 5 to 100 μm.

  The temporary protective film 6 is a peelable film, and is a film for protecting the surface of the protective film 3 on which the temporary protective film 6 is laminated from being damaged or worn. As the material of the temporary protective film 6, the same material as that of the protective film 3 can be used, and polyester resins such as polyethylene terephthalate, polyethylene naphthalate, polyethylene isophthalate, and polybutylene terephthalate are particularly preferable.

  The temporary protective film 6 may have a pressure-sensitive adhesive layer having weak adhesion laminated on the surface of the film in addition to the film serving as the base material. The temporary protective film 6 is laminated on the protective film 3 and then bonded to the protective film 3 until the polarizing plate 1B is used. The temporary protective film 6 is peeled off from the protective film 3 when used. The end 6a of the temporary protective film 6 is preferably aligned with the end 3a of the protective film 3 over the entire circumference.

  The thickness of the temporary protective film 6 is preferably 5 to 200 μm, more preferably 5 to 150 μm, and still more preferably 5 to 100 μm.

  According to the polarizing plate 1B, the protective film 3 is prevented from being damaged or worn, and when the polarizing plate 1B is used, the separator 4 is peeled off to expose the adhesive layer 5, and the polarizing plate 1B is removed by the adhesive force. An image display device can be configured by sticking to an article such as a liquid crystal cell or an organic EL device.

  Taking a liquid crystal cell as an example, as shown in FIG. 4, for example, a polarizing plate 1 </ b> B with a separator 4 peeled off is adhered to both surfaces of a liquid crystal cell 8 to form a liquid crystal panel 9. Device; not shown) The liquid crystal display device 10 can be manufactured by combining other members. On the other hand, a touch panel or the like can be provided on the surface exposed by peeling off the temporary protective film 6.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment. For example, although the end part 2a of the polarizer 2 showed the aspect located inside the edge part 3a, 3a of both the protective films 3 and 3 over the perimeter in the said embodiment, it is located inside. The part to perform does not need to cover the whole periphery of the polarizer 2. In this case, the end 2a of the polarizer 2 is protected only at the portion located on the inner side of the ends 3a and 3a of the protective films 3 and 3. As an example, only the end 2a of the polarizer 2 (two opposite sides of the polarizer 2) on the side surface perpendicular to the direction of the optical axis of the polarizer 2 is inside the ends 3a and 3a of the protective films 3 and 3. May be located.

  In the above embodiment, the entire length of the polarizer 2 is shown to be located on the inner side with the same length. However, the degree of the depression of the polarizer 2 may be changed depending on the location. For example, if a part that is susceptible to impact during handling of the polarizing plate is known in advance, the above-described complicated curl may occur, but the width of the dent at the end of the polarizer may be increased. preferable.

  One protective film 3 may have the same shape as the polarizer 2. That is, the end 3 a of one protective film 3 may be aligned with the end 2 a of the polarizer 2.

  Moreover, although the polarizing plate 1A, 1B showed the example which is planar view rectangle in the said embodiment, other squares, for example, a trapezoid, a parallelogram, a square, etc. may be sufficient, and it may be circular or elliptical. Also good. That is, the polarizing plates 1A and 1B can have any shape according to the shape of the article to which the polarizing plates 1A and 1B are attached. In particular, the shape in plan view is the region where the polarizing plates 1A and 1B are attached. The shape may match the shape.

  DESCRIPTION OF SYMBOLS 1A, 1B ... Polarizing plate, 2 ... Polarizer, 2a ... End of polarizer, 3 ... Protective film, 3a ... End of protective film, 4 ... Separator, 4a ... End of separator, 5 ... Adhesive layer, 5a ... end of pressure-sensitive adhesive layer, 6 ... temporary protective film, 6a ... end of temporary protective film, 8 ... liquid crystal cell, 9 ... liquid crystal panel, 10 ... liquid crystal display device (image display device).

Claims (14)

A polarizer and a protective film laminated on both sides of the polarizer via an adhesive ;
Each of the protective films is formed into a predetermined shape,
Each of the protective films is laminated on the entire surface of one side of the polarizer,
The polarizing plate in which the edge part of at least one part of the said polarizer is located inside 1-500 micrometers inside the edge part of at least one said protective film.   The polarizing plate according to claim 1, wherein at least a part of the end portions of the polarizer is located inside the end portions of both of the protective films.   The polarizing plate of Claim 1 or 2 with which all the edge parts of the said polarizer are located inside the edge part of at least one said protective film.   The polarizing plate as described in any one of Claims 1-3 whose planar view shape is a shape which corresponds to the shape of the area | region which sticks the said polarizing plate.   The polarizing plate as described in any one of Claims 1-4 which is a planar view square shape.   The part which the edge part is located inside the edge part of the said protective film among the said polarizers is in the state which the side surface of the said polarizer was open | released and it was in contact with the open air. The polarizing plate according to any one of 5. The polarizer is a stretched film,
The end portion of the polarizer on the side surface extending in the circumferential direction with an inclination of 40 ° or more and 140 ° or less with respect to the direction of the optical axis of the polarizer is located on the inner side than the end portion of the protective film. The polarizing plate as described in any one of Claims 1-6.   The end of the polarizer on the side surface extending in the direction perpendicular to the direction of the optical axis of the polarizer and in the circumferential direction is located inside the end of the protective film. 7. The polarizing plate according to 7. A separator is laminated via an adhesive layer on the side of the protective film where the polarizer is not laminated,
The polarizing plate as described in any one of Claims 1-8 by which the temporary protective film is laminated | stacked on the side by which the said polarizer of the other said protective film is not laminated | stacked.   An image display apparatus provided with the polarizing plate as described in any one of Claims 1-8. Laminating a polarizer via an adhesive so that the entire surface of one side is covered with the first protective film, the first protective film molded in a predetermined shape,
A method of manufacturing a polarizing plate, comprising: laminating a second protective film on the polarizer so as to cover the entire surface of the other side of the polarizer through an adhesive ,
The first protective film, the first protective film, and the polarizer so as to be positioned 1 to 500 μm inside from at least a part of the protective film of at least one of the first protective film and the second protective film. A method for producing a polarizing plate, comprising laminating a polarizer and the second protective film.   Among the polarizers, the first protection is performed such that a side surface of the polarizer is open and in contact with the outside air at a portion where the end portion is located inside the end portion of the protective film. The manufacturing method of the polarizing plate of Claim 11 which laminates | stacks a film, the said polarizer, and a said 2nd protective film. The polarizer is a stretched film,
The end portion of the polarizer on the side surface extending in the circumferential direction with an inclination of 40 ° or more and 140 ° or less with respect to the direction of the optical axis of the polarizer is located inside the end portion of the protective film. Thus, the manufacturing method of the polarizing plate of Claim 11 or 12 which laminates | stacks the said 1st protective film, the said polarizer, and the said 2nd protective film.   The first end so that the end of the polarizer on the side surface extending in the direction perpendicular to the direction of the optical axis of the polarizer and in the circumferential direction is located inside the end of the protective film. The manufacturing method of the polarizing plate of Claim 13 which laminates | stacks the protective film, the said polarizer, and the said 2nd protective film.

Images