JP2012247520A - Polarizing plate with retardation layer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polarizing plate with a retardation layer capable of reducing crosstalk in stereoscopic image display.SOLUTION: A polarizing plate 100 with a retardation layer includes: a polarizing plate 10 having a polarizer 11 and protective layers 21, 22 disposed on both sides of the polarizer 11, respectively; a retardation layer 30 disposed on one side of the polarizing plate 10; a first adhesion layer 41 disposed on the other side of the polarizing plate 10; and a second adhesion layer 42 disposed between the polarizing plate 10 and the retardation layer 30. The retardation layer 30 includes multiple regions which have slow axes in directions different from each other in a predetermined pattern. The creep shift amount (L2) of the second adhesion layer 42 is 200 μm or more. Here, in the adhesion layer having the thickness of 20 μm and an adhesion area of 100 mm, the creep shift amount represents the shift amount after one hour when a tensile shearing force of 4.9 N is applied at 23°C.

Description

  The present invention relates to a polarizing plate with a retardation layer. More specifically, the present invention relates to a retardation layer-attached polarizing plate having a patterned retardation layer.

  Conventionally, a lot of researches have been made and put into practical use regarding technologies related to stereoscopic (three-dimensional) image display. The basic principle of stereoscopic display is by providing different images to the left and right eyes of the observer. As a technique related to stereoscopic image display, typically, a spectacle method in which an observer wears special spectacles or the like, and a naked eye method in which spectacles or the like are not worn are cited. In the eyeglass system, there are a time division system that alternately outputs and outputs a left-eye image and a right-eye image, and a space-division system that outputs left and right images having different polarization directions for each line of a liquid crystal cell. In the space division method, in order to output left and right images having different polarization directions for each line of the liquid crystal cell, it is necessary to develop a pattern-like phase difference corresponding to each line of the liquid layer cell. As means for expressing a pattern-like phase difference, a phase difference plate (pattern retarder) having a pattern of regions having different slow axis directions is known (for example, Patent Document 1).

  The pattern retarder as described above is usually arranged further on the viewing side of the viewing-side polarizing plate in the liquid crystal display device for stereoscopic (three-dimensional) image display. However, there may be a problem that crosstalk occurs under conditions such as heating and humidification (particularly when the function of the pattern retarder is imparted to the viewing-side protective layer of the viewing-side polarizing plate). Crosstalk means that each of the left and right images is mixed into the other image.

Japanese Patent No. 3372016

  The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a polarizing plate with a retardation layer capable of reducing crosstalk in stereoscopic image display.

The polarizing plate with a retardation layer of the present invention includes a polarizing plate having a polarizer and protective layers disposed on both sides of the polarizer, a retardation layer disposed on one side of the polarizing plate, and the polarizing plate. And a second adhesive layer disposed between the polarizing plate and the retardation layer, wherein the retardation layers are in different directions. A plurality of regions having a slow axis are provided in a predetermined pattern, and the creep amount (L2) of the second adhesive layer is 200 μm or more.
In a preferred embodiment, the in-plane retardation Re (590) of the retardation layer is 90 nm to 190 nm.
In a preferred embodiment, the predetermined pattern of the retardation layer has a stripe shape in which two regions having slow axes in different directions are alternately arranged.
In a preferred embodiment, each of the two regions having the slow axis in the different directions corresponds to one line of the liquid crystal cell.
According to another aspect of the present invention, a liquid crystal panel is provided. This liquid crystal panel has the above polarizing plate with a retardation layer.
According to another aspect of the present invention, a liquid crystal display device is provided. The liquid crystal display device includes the liquid crystal panel.

  According to the present invention, a polarizing plate with a retardation layer capable of reducing crosstalk in stereoscopic image display can be obtained by providing an adhesive layer that satisfies a specific creep characteristic on one side of the polarizing plate.

It is a schematic sectional drawing of the polarizing plate with a phase difference layer by preferable embodiment of this invention. It is a schematic plan view which shows an example of the pattern of the phase difference layer in the polarizing plate with a phase difference layer by preferable embodiment of this invention.

  Hereinafter, although preferable embodiment of this invention is described, this invention is not limited to these embodiment.

(Definition of terms and symbols)
The definitions of terms and symbols in this specification are as follows.
(1) Refractive index (nx, ny, nz)
“Nx” is the refractive index in the direction in which the in-plane refractive index is maximum (ie, the slow axis direction), and “ny” is the direction orthogonal to the slow axis in the plane (ie, the fast axis direction). “Nz” is the refractive index in the thickness direction.
(2) In-plane retardation (Re)
The in-plane retardation (Re) means an in-plane retardation value of a layer (film) at 23 ° C., and a wavelength of 590 nm unless otherwise specified. Re is obtained by Re = (nx−ny) × d, where d (nm) is the thickness of the layer (film).
(3) Thickness direction retardation (Rth)
Thickness direction retardation (Rth) is a retardation value in the thickness direction of a layer (film) at a wavelength of 590 nm unless otherwise specified. Rth is determined by Rth = (nx−nz) × d, where d (nm) is the thickness of the layer (film).
(4) Creep displacement (L)
The creep displacement amount (L) refers to a displacement amount after 1 hour when a tensile shear force of 4.9 N is applied at 23 ° C. in an adhesive layer having a thickness of 20 μm and an adhesion area of 100 mm ² .

A. FIG. 1 is a schematic sectional view of a polarizing plate with a retardation layer according to a preferred embodiment of the present invention. The polarizing plate with retardation layer 100 includes a polarizing plate 10, a retardation layer 30 disposed on one side (typically, a viewing side) of the polarizing plate 10, and a first disposed on the other side of the polarizing plate 10. Adhesive layer 41, and second adhesive layer 42 disposed between polarizing plate 10 and retardation layer 30. In the illustrated example, the polarizing plate 10 includes a polarizer 11 and protective layers 21 and 22 disposed on both sides of the polarizer 11, respectively. Typically, the polarizing plate 100 with a retardation layer is laminated on a liquid crystal cell (typically, the viewing side) with the first adhesive layer 41 bonded thereto.

B. Polarizing plate The polarizing plate has at least a polarizer. The polarizing plate may further have a protective layer for the polarizer. Specifically, the polarizing plate may have a configuration in which a protective layer is disposed on each side of the polarizer, or may have a configuration in which the protective layer is disposed only on one side of the polarizer.

B-1. Polarizer Any appropriate polarizer may be adopted as the polarizer according to the purpose. For example, dichroic substances such as iodine and dichroic dyes are adsorbed on hydrophilic polymer films such as polyvinyl alcohol films, partially formalized polyvinyl alcohol films, and ethylene / vinyl acetate copolymer partially saponified films. And polyene-based oriented films such as a uniaxially stretched product, a polyvinyl alcohol dehydrated product and a polyvinyl chloride dehydrochlorinated product. Among these, a polarizer obtained by adsorbing a dichroic substance such as iodine on a polyvinyl alcohol film and uniaxially stretching is particularly preferable because of its high polarization dichroic ratio.

  A polarizer uniaxially stretched by adsorbing iodine to a polyvinyl alcohol film can be produced by, for example, dyeing polyvinyl alcohol in an aqueous solution of iodine and stretching it 3 to 7 times the original length. . If necessary, it may contain boric acid, zinc sulfate, zinc chloride or the like, or may be immersed in an aqueous solution such as potassium iodide. Further, if necessary, the polyvinyl alcohol film may be immersed in water and washed before dyeing.

  By washing the polyvinyl alcohol film with water, not only can the surface of the polyvinyl alcohol film be cleaned and the anti-blocking agent can be washed, but also the effect of preventing unevenness such as uneven dyeing can be obtained by swelling the polyvinyl alcohol film. is there. Stretching may be performed after dyeing with iodine, may be performed while dyeing, or may be dyed with iodine after stretching. The film can be stretched in an aqueous solution of boric acid or potassium iodide or in a water bath.

  The thickness of the polarizer is generally about 1 μm to 80 μm, preferably 5 μm to 40 μm.

  The boron content of the polarizer is preferably 3% by weight to 5.5% by weight, and more preferably 3.4% by weight to 5.5% by weight. Such a polarizer has a small dimensional change (shrinkage) under conditions such as heating and humidification, and can contribute to the reduction of crosstalk. When the boron content is less than 3% by weight, the water resistance may be insufficient. On the other hand, when the boron content exceeds 3.9% by weight, the durability may be insufficient. For example, when a heat cycle test is performed with a polarizing plate, breakage tends to occur in the direction of stretching of the polarizer. The boron content of the polarizer can be calculated as, for example, a weight fraction (%) of boron with respect to the weight of the polarizer by high-frequency inductively coupled plasma (ICP) emission spectroscopy. Boron is typically considered to be present in a polarizer in a state in which boric acid or a polyvinyl alcohol unit forms a cross-linked structure in the polarizer. Value.

B-2. Protective layer The protective layer is formed of any suitable film that can be used as a protective layer for a polarizer. Specific examples of the material as the main component of the film include cellulose resins such as triacetyl cellulose (TAC), polyester-based, polyvinyl alcohol-based, polycarbonate-based, polyamide-based, polyimide-based, polyethersulfone-based, and polysulfone-based materials. And transparent resins such as polystyrene, polynorbornene, polyolefin, (meth) acryl, and acetate. Further, thermosetting resins such as (meth) acrylic, urethane-based, (meth) acrylurethane-based, epoxy-based, and silicone-based or ultraviolet curable resins are also included. In addition to this, for example, a glassy polymer such as a siloxane polymer is also included. Moreover, the polymer film as described in Unexamined-Japanese-Patent No. 2001-343529 (WO01 / 37007) can also be used. As a material for this film, for example, a resin composition containing a thermoplastic resin having a substituted or unsubstituted imide group in the side chain and a thermoplastic resin having a substituted or unsubstituted phenyl group and nitrile group in the side chain For example, a resin composition having an alternating copolymer composed of isobutene and N-methylmaleimide and an acrylonitrile / styrene copolymer can be mentioned. The polymer film can be, for example, an extruded product of the resin composition.

  The thickness of the protective layer is preferably 20 μm to 100 μm.

C. Retardation layer The retardation layer can typically function as a λ / 4 plate. The λ / 4 plate can convert linearly polarized light having a specific wavelength into circularly polarized light (or circularly polarized light into linearly polarized light). The in-plane retardation Re (590) of such a retardation layer is preferably 90 nm to 190 nm, more preferably 100 nm to 170 nm, and further preferably 110 nm to 150 nm. The retardation layer preferably has a refractive index ellipsoid of nx>ny> nz or nx> ny = nz. In the present specification, “ny = nz” includes not only the case where ny and nz are exactly equal, but also the case where ny and nz are substantially equal.

  The retardation layer has a plurality of regions each having a slow axis in a different direction in a predetermined pattern. Typical examples of patterns include stripes, checkers, and mosaics. By having such a configuration, different images can be provided to the left and right eyes of the observer, and as a result, a three-dimensional (stereoscopic) image can be provided. In the present specification, for example, “the in-plane phase difference Re (590) is 140 nm” preferably means that the in-plane phase differences of the plurality of regions are each 140 nm. Typically, the retardation layer has two regions each having a slow axis in different directions in a predetermined pattern. Typically, the slow axis directions of the two regions are substantially orthogonal to each other. With such a configuration, the two regions can provide images having different polarization directions, and as a result, a good three-dimensional image can be provided.

  The predetermined pattern of the retardation layer preferably has a stripe shape in which two regions 31 and 32 each having a slow axis in different directions are alternately arranged as shown in FIG. The stripe direction may be the horizontal direction (left-right direction) of the display screen or the vertical direction (up-down direction). Similarly to the above, the slow axis directions of the two striped regions are substantially orthogonal to each other. Preferably, each of the two regions having the slow axis in the different directions corresponds to one line of the liquid crystal cell. In other words, the stripe width in the stripe pattern corresponds to one line of the liquid crystal cell. In this specification, “one line of a liquid crystal cell” refers to a vertical or horizontal line of pixels arranged in a matrix. The stripe pattern preferably has black stripes between adjacent regions. The black stripe can be preferably formed at a position corresponding to the black matrix of the liquid crystal cell. By providing black stripes, crosstalk can be further reduced.

  The slow axis directions of the respective regions having different slow axis directions in the retardation layer preferably have a relationship of substantially ± 45 ° with the absorption axis direction of the polarizer. If the in-plane retardation of the retardation layer is within the above preferred range and the slow axis direction of each region and the absorption axis direction of the polarizer are in such a relationship, the left eye image and the right eye image Since both of the images for use are circularly polarized light, a good stereoscopic image display can be realized.

  In one embodiment, the retardation layer comprises a plurality of regions each having a slow axis in a different direction formed by fixing a photocurable liquid crystal polymer in different alignment states on a base film. Have. Such a retardation layer is formed, for example, as follows: First, a photo-alignment film is formed on a base film, and an alignment regulating force is applied in a predetermined direction using a polarization exposure method. For example, a photo-alignment film having regions to which alignment regulating forces of + 45 ° and −45 ° are alternately applied to the stripe direction for each line of the liquid crystal cell is formed. Next, a photocurable liquid crystal polymer layer is formed on the photo-alignment film, and the photo-curable liquid crystal polymer layer is irradiated with ultraviolet rays to fix the alignment state of the liquid crystal polymer. (For example, two regions having + 45 ° and −45 ° slow axis directions alternately with respect to the stripe direction for each line of the liquid crystal cell). The in-plane retardation of the region can be adjusted in consideration of the in-plane retardation of the base film so that the in-plane retardation of the entire retardation layer is in the preferred range.

The linear expansion coefficient of the base film is preferably 5.0 × 10 ⁻⁴ (1 / ° C.) or less, more preferably 1.0 × 10 ⁻⁴ (1 / ° C.) or less. Examples of the material constituting the base film include a cyclic olefin resin, a polycarbonate resin, and a cellulose resin. The cyclic olefin-based resin is a general term for resins that are polymerized using a cyclic olefin as a polymerization unit, and is described in, for example, JP-A-1-240517, JP-A-3-14882, JP-A-3-122137, and the like. Resin. Specific examples include ring-opening (co) polymers of cyclic olefins, addition polymers of cyclic olefins, copolymers of cyclic olefins and α-olefins such as ethylene and propylene (typically random copolymers). And graft modified products in which these are modified with an unsaturated carboxylic acid or a derivative thereof, and hydrides thereof. Specific examples of the cyclic olefin include norbornene monomers. As said polycarbonate-type resin, arbitrary appropriate polycarbonate-type resins are used as long as the effect of this invention is acquired. For example, an aromatic polycarbonate composed of an aromatic dihydric phenol component and a carbonate component is preferably used.

  In another embodiment, the retardation layer may be formed from a polymer material containing a photoisomerization substance. Since the photoisomerized substance generates a structural isomer or a stereoisomer by light irradiation or the like, regions having different slow axis directions can be formed in a predetermined pattern by performing light irradiation in a predetermined pattern. The photoisomerizable material is typically any suitable photochromic compound having a photoisomerizable functional group. Specific examples include azobenzene compounds, benzaldoxime compounds, azomethine compounds, stilbene compounds, spiropyran compounds, spirooxazine compounds, fulgide compounds, diarylethene compounds, cinnamic acid compounds, retinal compounds, And hemithioindico compounds. Preferred are azobenzene compounds, spiropyran compounds, and cinnamic acid compounds, and particularly preferred are cinnamic acid compounds. Further, the photoisomerization substance may be a monomer or a polymer.

  Any appropriate polymer material can be adopted as the polymer material. Furthermore, the polymer material may preferably contain a polymerizable resin. By containing the polymerizable resin, the orientation of the photoisomerized substance can be fixed. In more detail, once the polymerizable resin is polymerized so as to fix the orientation of the photoisomerized substance by light irradiation or heating, the desired resin of the photoisomerization substance can be obtained even if further light irradiation or heating is performed. May not play a role in causing structural isomerization. That is, the polymerizable resin can always stably maintain the slow axis direction fixed in the retardation layer. Examples of such a polymerizable resin include a compound having an unsaturated double bond, a compound having an electrophilic group, a compound having a nucleophilic group, and a compound having a polymerizable liquid crystal structure.

  A method for forming a retardation layer using a polymer material containing a photoisomerization substance will be briefly described. First, a pretreatment sheet is formed from a composition containing the photoisomerization material, the polymer material, and, if necessary, a polysynthetic resin. Any appropriate method (for example, a solution casting method, a melt film forming method (melt extrusion method), a coating method) may be employed as a method for forming the pretreatment sheet. For example, when performing the melt film-forming method, the pretreatment sheet can be produced by melting the above composition at a predetermined temperature and casting it from a die to a cooling roll. The pretreatment sheet may be used in an unstretched state, but it can be preferably uniaxially stretched in a predetermined direction. By performing uniaxial stretching, the slow axis directions of the plurality of regions can be more evenly aligned by light irradiation described later. A method and conditions for uniaxial stretching (for example, a stretching ratio and a stretching temperature) can be appropriately selected by those skilled in the art.

  Next, the pretreatment sheet is irradiated with light having an irradiation intensity distribution to form a plurality of regions having different slow axis directions. As a method of irradiating light having an irradiation intensity distribution, a method of irradiating light through a mask having a predetermined pattern is typically mentioned. The irradiation light is preferably linearly polarized light. In this manner, it is possible to form a retardation layer having a plurality of regions each having a slow axis in a different direction in a predetermined pattern.

  The details of the retardation layer (retardation film) using a polymer material containing a photoisomerization substance are described in Japanese Patent No. 3372016, which description is incorporated herein by reference.

  The retardation layer is not limited to the above form, and any suitable form can be adopted as long as the effects of the present invention can be obtained. For example, a predetermined position in which a polyvinyl alcohol film is selectively amorphized in a plane to form a predetermined pattern (for example, a stripe pattern in which different regions in the slow axis direction are alternately arranged for each line). A pattern retarder film corresponding to a phase difference (for example, a half wavelength phase difference); on a layer in which a region of a predetermined wavelength (for example, a half wavelength) is formed in a predetermined pattern (for example, a stripe pattern), A pattern retarder film provided with a retardation layer having a predetermined wavelength (for example, ¼ wavelength) that is not patterned can be used as the retardation layer.

D. Adhesive layer In the present specification, an “adhesive layer” refers to a layer that joins surfaces of adjacent optical members and integrates them with practically sufficient adhesive force and adhesion time. Examples of the material forming the adhesive layer include a pressure-sensitive adhesive, an adhesive, and an anchor coat agent. The adhesive layer may have a multilayer structure in which an anchor coat layer is formed on the surface of an adherend and an adhesive layer is formed thereon. Further, it may be a thin layer (also referred to as a hairline) that cannot be visually recognized.

  The creep amount (L2) of the second adhesive layer is preferably 200 μm or more, more preferably 500 μm or more. Since the second adhesive layer has such characteristics, crosstalk can be reduced well. Specifically, stress due to dimensional change (shrinkage) of the polarizer under conditions such as heating and humidification is alleviated to reduce the influence of the dimensional change on the retardation layer (for example, dimensional change of the retardation layer). can do. As a result, it is possible to improve the problem that the pattern of the patterned retardation layer (pattern retarder) does not correspond to the line of the liquid crystal cell and crosstalk occurs.

  The thickness of the adhesive layer can be appropriately set according to the purpose. The thickness is preferably 2 μm to 50 μm, more preferably 2 μm to 40 μm, and particularly preferably 5 μm to 35 μm. By setting the thickness within such a range, an adhesive layer having appropriate adhesiveness can be obtained.

  The transmittance of the adhesive layer measured with light having a wavelength of 590 nm at 23 ° C. is preferably 90% or more. The theoretical upper limit of transmittance is 100%, and the practical upper limit is 96%.

  The gel fraction of the adhesive layer is preferably 75% or more, more preferably 75% to 90%, and particularly preferably 80% to 85%. By setting the gel fraction within such a range, an adhesive layer having good adhesive properties can be obtained. The gel fraction can be adjusted depending on the type and content of the crosslinking agent used.

  The glass transition temperature (Tg) of the adhesive layer is preferably −70 ° C. to −10 ° C., more preferably −60 ° C. to −15 ° C., and particularly preferably −50 ° C. to −20 ° C. By setting the glass transition temperature in such a range, an adhesive layer having strong adhesion to the retardation layer can be obtained.

  The moisture content of the adhesive layer is preferably 1.0% or less, more preferably 0.8% or less, particularly preferably 0.6% or less, and most preferably 0.4% or less. The theoretical lower limit of moisture content is zero. By setting the moisture content in such a range, it is possible to obtain an adhesive layer in which foaming does not easily occur even in a high temperature environment.

  The adhesive layer is preferably composed of an acrylic pressure-sensitive adhesive. The acrylic pressure-sensitive adhesive preferably contains a (meth) acrylic polymer and a peroxide. The (meth) acrylic polymer refers to a polymer or copolymer synthesized from an acrylate monomer and / or a methacrylate monomer. When the (meth) acrylic polymer is a copolymer, the arrangement state of the molecules is not particularly limited, and may be a random copolymer, a block copolymer, or a graft copolymer. It may be a coalescence. A preferable molecular arrangement state of the (meth) acrylic polymer is a random copolymer.

  Any appropriate peroxide can be used as the peroxide as long as radicals can be generated by heating to achieve crosslinking of the (meth) acrylic polymer. Examples of the peroxide include hydroperoxides, dialkyl peroxides, peroxyesters, diacyl peroxides, peroxydicarbonates, peroxyketals, and ketone peroxides. The amount of the peroxide is preferably 0.01 parts by weight to 1 part by weight, and more preferably 0.05 parts by weight to 0.8 parts by weight with respect to 100 parts by weight of the (meth) acrylic polymer. Particularly preferred is 0.1 to 0.5 parts by weight, and most preferred is 0.15 to 0.45 parts by weight. By setting the amount of the peroxide in such a range, an adhesive layer having appropriate stress relaxation properties and excellent thermal stability can be obtained.

E. Others In the polarizing plate with a retardation layer of the present invention, any appropriate surface treatment layer may be formed on the viewing side of the retardation layer depending on the purpose. Representative examples of the surface treatment layer include an antiglare layer, an antireflection layer, and a hard coat layer.

  The antiglare layer is provided for the purpose of, for example, preventing a reduction in the visibility of transmitted light due to reflection of external light on the surface of the image display device. The antiglare layer can be formed by imparting a fine concavo-convex structure to the film surface to be formed. A typical example of a material for forming the antiglare layer is a transparent resin. Specific examples include ultraviolet curable resins containing acrylic resins such as isocyanuric acid triacrylate, pentaerythritol triacrylate, dipentaerythritol hexaacrylate, and urethane resins such as isophorone diisocyanate polyurethane. The provision of the fine concavo-convex structure is performed by any appropriate method. Typical examples include roughening (for example, sand blasting and embossing) and blending of fine particles. When fine particles are used, any appropriate fine particles can be adopted as the fine particles depending on the purpose. Preferably, it is a transparent fine particle. Specifically, the fine particles may be inorganic fine particles (for example, silica, alumina, titania, zirconia, tin oxide, indium oxide, cadmium oxide, or antimony oxide fine particles that may be conductive), and organic fine particles ( For example, it may be a crosslinked or uncrosslinked polymer fine particle). The average particle diameter of the fine particles is preferably 0.5 μm to 20 μm. The blending amount of the fine particles is preferably 2 parts by weight to 70 parts by weight, and more preferably 5 parts by weight to 50 parts by weight with respect to 100 parts by weight of the transparent resin.

  The hard coat layer is provided for the purpose of preventing scratches on the surface of a polarizing plate or the like disposed on the surface of the image display device. The hard coat layer is composed of a cured film having appropriate hardness and slipperiness. Examples of the material for forming the hard coat layer include a silicone resin in addition to the acrylic resin and the urethane resin that form the antiglare layer.

  The antireflection layer is provided for the purpose of preventing reflection of external light on the surface of the image display device. As the antireflection layer, an antireflection layer usually used in the art may be employed.

F. Liquid crystal panel The liquid crystal panel of this invention has the said polarizing plate with retardation layer. Preferably, the liquid crystal panel of the present invention includes a liquid crystal cell and the polarizing plate with a retardation layer disposed on the viewing side of the liquid crystal cell.

  The polarizing plate with a retardation layer of the present invention can be suitably used for a liquid crystal display device. In particular, it can be suitably used as a viewing side polarizing plate of a three-dimensional liquid crystal display device.

DESCRIPTION OF SYMBOLS 10 Polarizing plate 11 Polarizer 21 Protective layer 22 Protective layer 30 Phase difference layer 41 First adhesive layer 42 Second adhesive layer 100 Polarizing plate with phase difference layer

Claims (6)

A polarizing plate having a polarizer and protective layers respectively disposed on both sides of the polarizer;
A retardation layer disposed on one side of the polarizing plate;
A first adhesive layer disposed on the other side of the polarizing plate;
A second adhesive layer disposed between the polarizing plate and the retardation layer,
The retardation layer has a plurality of regions each having a slow axis in a different direction in a predetermined pattern,
A polarizing plate with a retardation layer, wherein the creep amount (L2) of the second adhesive layer is 200 μm or more:
Here, the creep displacement amount indicates a displacement amount after 1 hour when a tensile shear force of 4.9 N is applied at 23 ° C. in an adhesive layer having a thickness of 20 μm and an adhesion area of 100 mm ² .   The in-plane retardation Re (590) of the said retardation layer is a polarizing plate with a retardation layer of Claim 1 which is 90 nm-190 nm.   The polarizing plate with a retardation layer according to claim 1 or 2, wherein the predetermined pattern of the retardation layer has a stripe shape in which two regions having slow axes in different directions are alternately arranged.   The polarizing plate with a retardation layer according to any one of claims 1 to 3, wherein each of the two regions having a slow axis in the different direction corresponds to one line of the liquid crystal cell.   A liquid crystal panel comprising the polarizing plate with a retardation layer according to claim 1.   A liquid crystal display device comprising the liquid crystal panel according to claim 5.

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