JP2001350020A - Pressure-sensitive adhesive polarizing plat with optical compensation film, and liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive polarizing plate with an optical compensation film manufactured by laminating an optical compensation film with a pressure-sensitive adhesive layer (A) on a polarizing plate and further laminating a pressure-sensitive adhesive layer (B) on the opposite face of the optical compensation film to the pressure-sensitive adhesive layer (A), and to provide a polarizing plate, in which the stress generating in the optical compensation film can be reduced, the pressure-sensitive adhesive gives satisfactory yield and the pressure-sensitive adhesive is protruded only slightly from the cut face. SOLUTION: The pressure-sensitive adhesive polarizing plate with an optical compensation film features that both of the pressure-sensitive adhesive layers (A) and (B) show <=50 μm creep at 23 deg.C in the following test and that the pressure-sensitive adhesive layer (A) shows >=0.04 slope of the is approximated by a linear expression obtained by plotting the temperature as abscissa and the values expressed by (creep of the pressure-sensitive adhesive at each temperature)/(creep of the pressure-sensitive adhesive at 23 deg.C) as the ordinate in the temperature range form 23 deg.C to 90 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an adhesive polarizing plate with an optical compensation film and a liquid crystal display. The adhesive polarizing plate forms a liquid crystal display device with less display unevenness.

[0002]

2. Description of the Related Art A liquid crystal display device (LCD) uses a liquid crystal panel in which a polarizing plate is bonded to a liquid crystal cell via an adhesive. Particularly, a TFT-LCD has a wide viewing angle. For this purpose, a polarizing plate provided with a stretched polymer film or an optical compensation film in which a liquid crystal polymer is oriented via an adhesive is used.

In using such a liquid crystal display device, the liquid crystal panel is lit by a backlight or the like, so that the polarizing plate with the optical compensation film is heated to 40 to 60 ° C. by heat generated from the backlight or the like. In such a heated state, the polarizing plate and the optical compensation film tend to undergo linear expansion and change in dimensions due to evaporation of moisture, but the polarizing plate with the optical compensation film is fixed to the liquid crystal cell with an adhesive, and the dimensional change occurs. Therefore, stress remains in the polarizing plate and the optical compensation film. Also, since the change in the dimensions of the polarizing plate and the optical compensation film is larger in the polarizing plate, the stress due to the difference in the change in the dimensions of the polarizing plate and the optical compensation film is applied to the optical compensation film, causing optical distortion. Display unevenness occurs.

In order to reduce the display unevenness of the LCD panel, there is a method of using an adhesive layer which has a large displacement (creep) and is easily deformed as an adhesive layer for bonding the polarizing plate and the optical compensation film. According to this pressure-sensitive adhesive layer, the dimensional change of the polarizing plate is easily caused, the difference in dimensional change between the polarizing plate and the optical compensation film can be reduced, and the stress applied to the optical compensation film is reduced. Unevenness can be reduced.

However, if the pressure-sensitive adhesive layer has a large displacement (creep) and is easily deformed even at room temperature, it may be cut off in the manufacturing process of the polarizing plate with an optical compensation film. The adhesive protrudes from the end face of the polarizing plate with the optical compensation film, and a portion having no adhesive layer is generated in a part between the optical compensation film and the polarizing plate, or the polarization with the optical compensation film is caused by the protruding adhesive. Problems such as soiling the board occur.

[0006]

According to the present invention, an optical compensation film is provided on a polarizing plate via an adhesive layer A, and an adhesive B layer is provided on the surface of the optical compensation film opposite to the adhesive layer A. Provided is a pressure-sensitive adhesive polarizing plate with an optical compensation film, which can reduce the stress that can occur in the optical compensation film, has a high yield of the adhesive, and has a small amount of the adhesive sticking out from the cut surface. The purpose is to do.

[0007]

Means for Solving the Problems The present inventors have made intensive studies to solve the above problems, and as a result, have found that the above object can be achieved by the following adhesive polarizing plate with an optical compensation film. It was completed.

That is, the present invention provides a pressure-sensitive adhesive layer A on a polarizing plate.
An optically compensatory film is provided through the optical compensatory film, and an optically compensatory polarizing plate with an optically compensatory film, further comprising an adhesive B layer provided on the surface of the optically compensatory film opposite to the adhesive layer A, wherein the adhesive layer A and the adhesive Each of the agent layers B is 2
The creep of the following test at 3 ° C. is 50 μm or less, and the pressure-sensitive adhesive layer A has a vertical axis (adhesion at each temperature) with respect to the temperature on the horizontal axis in the temperature range of 23 ° C. to 90 ° C. When a relationship plotting a value represented by (creep of the agent) / (creep of the adhesive at 23 ° C.) is approximated by a linear expression, a slope of the linear expression is 0.04 or more. The present invention relates to an adhesive polarizing plate with an optical compensation film.

Test: Adhesive area of adhesive tape to test plate is 10
The adhesive tape was applied at a size of 10 mm × 10 mm, and the amount of displacement (creep) of the pressure-sensitive adhesive tape when a load of 200 g was applied for 1 hour was measured.

As described above, both the pressure-sensitive adhesive layer A and the pressure-sensitive adhesive layer B of the pressure-sensitive adhesive polarizing plate with an optical compensation film of the present invention have a creep at room temperature, that is, at 23 ° C. of 5 mm.
Since it is as small as 0 μm or less, the yield of the pressure-sensitive adhesive at room temperature is good, and the protrusion of the pressure-sensitive adhesive can be prevented by cutting in the manufacturing process of the pressure-sensitive adhesive polarizing plate with an optical compensation film. From this viewpoint, the creep at 23 ° C. is 40 μm
The following is preferred.

On the other hand, the pressure-sensitive adhesive layer A of the pressure-sensitive adhesive polarizing plate of the present invention.
In the temperature range from 23 ° C. to 90 ° C., the temperature on the horizontal axis is plotted against the vertical axis (creep of the adhesive at each temperature).
When the relationship plotting the value represented by / (creep of the adhesive at 23 ° C.) is approximated by a linear expression, the gradient of the linear expression is 0.04 or more. That is, the pressure-sensitive adhesive layer A of the present invention has such a property that the creep increases at a high temperature, whereby the stress applied to the optical compensation film can be reduced, and the occurrence of display unevenness can be prevented. From such a viewpoint, it is preferable that the gradient of the linear expression be 0.045 or more. If the slope of the linear equation is too large, the slope becomes excessively sensitive to the temperature. Therefore, the slope is preferably 0.07 or less from the viewpoint of handleability during the manufacturing process.

The term "creep" as used in the present invention is a value measured by the above test. More specifically, as shown in FIG. 1, a pressure-sensitive adhesive layer (20 μm) is formed on a base material (polarizing plate, 190 μm).
Adhesive tape (30 mm x 10 m)
m) to the test plate (SUS304 plate)
The amount of displacement (μm) of the adhesive tape when applied at 10 mm and a load of 200 g is applied for 1 hour.

The gradient of the linear expression can be, for example, a gradient in a linear expression derived from applying the plot value to the least squares method.

In the pressure-sensitive adhesive polarizing plate provided with an optical compensation film, the pressure-sensitive adhesive layers A and B in the temperature range from 23 ° C. to 90 ° C. are plotted on the vertical axis with respect to the temperature on the horizontal axis (at each temperature). Creep of adhesive) / (23 ° C
Is approximated by a linear expression, it is preferable that the gradient of the linear expression is: adhesive layer A> adhesive layer B.

The pressure-sensitive adhesive layer B is also preferably one capable of preventing the dimensional change of the optical compensation film. However, since the dimensional change of the optical compensation film is smaller than the dimensional change of the polarizing plate,
It is effective to prevent the occurrence of display unevenness by making the gradient of the linear expression smaller in the pressure-sensitive adhesive layer B than in the pressure-sensitive adhesive layer A.

In the pressure-sensitive adhesive polarizing plate with an optical compensation film, a transparent protective layer can be provided on the polarizing plate.

As described above, the pressure-sensitive adhesive layer A in the pressure-sensitive adhesive polarizing plate with an optical compensation film of the present invention has a large creep at a high temperature and can reduce stress concentration on the transparent protective layer provided on the polarizing plate. , L due to optical distortion
The occurrence of display unevenness on the CD panel can be suppressed.

Further, the present invention relates to a liquid crystal display device using a liquid crystal panel in which the adhesive polarizing plate with an optical compensation film is attached to at least one side of a liquid crystal cell.

The liquid crystal display using the pressure-sensitive adhesive polarizing plate with an optical compensation film of the present invention has little display unevenness.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION A pressure-sensitive adhesive polarizing plate with an optical compensation film according to the present invention, as shown in FIG.
The optical compensatory film 2 is provided via the optical compensation film 2, and a pressure-sensitive adhesive B layer is provided on the surface of the optical compensatory film 2 opposite to the pressure-sensitive adhesive layer A.

The polarizer constituting the polarizing plate 1 is not particularly limited, and various types can be used. Examples of the polarizer include dichroic dyes such as iodine and dichroic dyes on hydrophilic polymer films such as polyvinyl alcohol-based films, partially formalized polyvinyl alcohol-based films, and ethylene / vinyl acetate copolymer-based partially saponified films. A polarizing film such as a film obtained by adsorbing a substance and stretched, or a polyene-based oriented film such as a dehydrated product of polyvinyl alcohol or a dehydrochlorinated product of polyvinyl chloride can be used. Although the thickness of the polarizer is not particularly limited, it is generally about 5 to 80 μm.

On one or both sides of the polarizer, a transparent protective layer may be provided as a coating layer of a polymer or a laminate layer of a film for the purpose of water resistance or the like (not shown). As the transparent polymer or film material for forming the transparent protective layer, an appropriate transparent material can be used, but a material having excellent transparency, mechanical strength, heat stability, moisture barrier property and the like is preferably used. Although the thickness of the transparent protective layer is not particularly limited, it is generally about 10 to 300 μm.

Materials for forming the transparent protective layer include:
For example, polyester polymers such as polyethylene terephthalate and polyethylene naphthalate, cellulosic polymers such as cellulose diacetate and cellulose triacetate, acrylic polymers such as polymethyl methacrylate, and styrene such as polystyrene and acrylonitrile-styrene copolymer (AS resin) Polymers, polycarbonate polymers and the like. In addition, polyethylene, polypropylene, polyolefin having a cyclo- or norbornene structure, polyolefin polymers such as ethylene-propylene copolymer, vinyl chloride polymers, amide polymers such as nylon and aromatic polyamide, imide polymers, and sulfone polymers , Polyether sulfone polymer, polyether ether ketone polymer, polyphenylene sulfide polymer, vinyl alcohol polymer, vinylidene chloride polymer, vinyl butyral polymer, arylate polymer, polyoxymethylene polymer, epoxy polymer, or the above Blends of polymers and the like are also examples of the polymer forming the transparent protective layer.

The optical compensation film 2 is not particularly limited, and various types can be used. Examples of the optical compensation film include a polymer material and a liquid crystal polymer alignment product. Although the thickness of the optical compensation film is not particularly limited, it is generally about 20 to 150 μm.

Examples of the polymer material include polyvinyl alcohol, polyvinyl butyral, polymethyl vinyl ether, polyhydroxyethyl acrylate, hydroxyethyl cellulose, hydroxypropyl cellulose, methyl cellulose, polycarbonate, polyarylate, polysulfone, polyethylene terephthalate, polyethylene naphthalate, and polyethylene naphthalate. Ether sulfone, polyphenylene sulfide, polyphenylene oxide,
Examples include polyallyl sulfone, polyvinyl alcohol, polyamide, polyimide, polyolefin, polyvinyl chloride, cellulose polymers, and various binary and ternary copolymers, graft copolymers, and blends thereof. These polymer materials become oriented products (stretched films) by stretching or the like.

Examples of the liquid crystalline polymer include various types of main chain and side chain in which a conjugated linear atomic group (mesogen) for imparting liquid crystal orientation is introduced into the main chain and side chain of the polymer. And so on. Specific examples of the main chain type liquid crystal polymer include a polyester liquid crystal polymer having a structure in which a mesogen group is bonded by a spacer portion imparting flexibility, such as a nematic alignment. Specific examples of the side chain type liquid crystal polymer include polysiloxane, polyacrylate, polymethacrylate, or polymalonate as a main chain skeleton, and a paraffin having a nematic alignment imparting property via a spacer portion including a conjugated atomic group as a side chain. And those having a mesogen moiety composed of a substituted cyclic compound unit. These liquid crystalline polymers are prepared, for example, by rubbing the surface of a thin film of polyimide or polyvinyl alcohol formed on a glass plate, or by applying a solution of the liquid crystalline polymer on an alignment-treated surface such as obliquely deposited silicon oxide. It is performed by developing and heat-treating.

The pressure-sensitive adhesive used for the pressure-sensitive adhesive layers A and B constituting the pressure-sensitive adhesive polarizing plate with an optical compensation film of the present invention has a creep at 23 ° C. of 50 μm or less as described above. . In addition, as the pressure-sensitive adhesive used for the pressure-sensitive adhesive layer A, those having a slope of the linear equation of 0.04 or more can be used without particular limitation. Further, the pressure-sensitive adhesive used for the pressure-sensitive adhesive layer B is preferably one in which the inclination of the linear expression is smaller than that of the pressure-sensitive adhesive layer A. In the present invention, those satisfying the above conditions are appropriately selected and used.

Examples of the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layers A and B include various pressure-sensitive adhesives such as rubber-based pressure-sensitive adhesives, acrylic pressure-sensitive adhesives, and silicone-based pressure-sensitive adhesives. An adhesive is preferred, and the weight average molecular weight of the base polymer is preferably about 300,000 to 2.5 million.

The monomers used for the acrylic polymer which is the base polymer of the acrylic pressure-sensitive adhesive include various (meth) acrylates ｛(meth) acrylates are acrylates and / or methacrylates. The term “ester” refers to the term “(meth)” hereinafter. You can use｝. Specific examples of such (meth) acrylates include, for example, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, and the like. Can be used alone or in combination. Further, a small amount of (meth) acrylic acid may be used in place of part of the (meth) acrylic acid ester in order to impart polarity to the obtained acrylic polymer. Further, glycidyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, N-methylol (meth) acrylamide, or the like may be used in combination as a crosslinkable monomer. Further, if desired, other copolymerizable monomers such as vinyl acetate and styrene can be used in combination to such an extent that the adhesive properties of the (meth) acrylate polymer are not impaired.

As the base polymer of the rubber-based pressure-sensitive adhesive,
For example, natural rubber, isoprene rubber, styrene-butadiene rubber, recycled rubber, polyisobutylene rubber,
Further, styrene-isoprene-styrene-based rubber, styrene-butadiene-styrene-based rubber and the like can be mentioned. Examples of the base polymer of the silicone-based pressure-sensitive adhesive include dimethylpolysiloxane and diphenylpolysiloxane.

The pressure-sensitive adhesive can be realized, for example, by blending a compound (b) having a molecular weight of 100,000 or less with the base polymer (a). The ratio (weight ratio) of (a) :( b) is more preferably 90:10 to 20:80.

The compound (b) having a molecular weight of 100,000 or less has good compatibility when blended with the base polymer (a), is optically transparent, and has a glass transition point (Tg) of 3
Those at 0 ° C. or higher are preferred. For example, a polymer similar to the base polymer having a weight-average molecular weight of 100,000 or less and using many components having a high Tg as a monomer component may be used.

The pressure-sensitive adhesive may contain a crosslinking agent. Examples of the crosslinking agent include a polyisocyanate compound, a polyamine compound, a melamine resin, a urea resin, and an epoxy resin. Further, the pressure-sensitive adhesive, if necessary, a tackifier, a plasticizer, a filler, an antioxidant, an ultraviolet absorber, and the like, and each may be appropriately used without departing from the object of the present invention. it can.

The method for forming the pressure-sensitive adhesive layer A and the pressure-sensitive adhesive layer B is not particularly limited, and a method of coating and drying a pressure-sensitive adhesive (solution) on a polarizing plate or an optical compensation film, and a method of forming a pressure-sensitive adhesive layer. A transfer method using a mold sheet can be used.

Pressure-sensitive adhesive layer A and pressure-sensitive adhesive layer B (dry film thickness)
Is not particularly limited, but is preferably about 10 to 40 μm.

[0036]

EXAMPLES The present invention will be described in detail with reference to examples and the like, but the present invention is not limited to these examples.

Production Example 1 (Preparation of Adhesive) 80 parts by weight of butyl acrylate, 20 parts by weight of methyl acrylate, 1 part by weight of acrylate, and 0.5 part by weight of benzoyl peroxide were adjusted to a monomer concentration of 40% by weight. After dissolving in ethyl acetate, polymerize at 60 ° C. for 8 hours to obtain polymer solution 1
(Weight average molecular weight 1.2 million) was obtained.

Also, 40 parts by weight of butyl acrylate, 60 parts by weight of methyl methacrylate, 1 part by weight of acrylic acid, and 0.5 parts by weight of benzoyl peroxide were dissolved in toluene so as to have a monomer concentration of 20% by weight. Polymerization was performed at 8 ° C. for 8 hours to obtain a polymer solution 2 (weight average molecular weight: 50,000).

70 parts by weight of the solid content of the polymer solution 1, 30 parts by weight of the solid content of the polymer solution 2 and 1 part by weight of an epoxy-based cross-linking agent (trade name: Tetrad C, manufactured by Mitsubishi Chemical Corporation) were mixed, and an adhesive syrup (hereinafter referred to as "syrup") This was referred to as adhesive 1).

Production Example 2 100 parts by weight of butyl acrylate, 5 parts by weight of acrylate, and 0.5 parts by weight of benzoyl peroxide were prepared at a monomer concentration of 60.
% By weight, and polymerized at 60 ° C. for 8 hours to obtain a polymer solution 3 (weight average molecular weight: 180%).
10,000). 1 part by weight of an isocyanate-based cross-linking agent (trade name: Coronate L, manufactured by Nippon Polyurethane Industry Co., Ltd.) was added to 100 parts by weight of the solid content of polymer 3 to obtain an adhesive syrup (hereinafter referred to as adhesive 2). .

Production Example 3 100 parts by weight of isononyl acrylate, 0.1 part by weight of 2-hydroxyethyl acrylate and 0.5 part by weight of azobisisobutyronitrile were dissolved in ethyl acetate so that the monomer concentration became 60%. Thereafter, polymerization was performed at 60 ° C. for 8 hours to obtain a polymer solution 4 (weight average molecular weight: 1.6 million). 1 part by weight of an isocyanate-based cross-linking agent (trade name: Coronate L, manufactured by Nippon Polyurethane Industry Co., Ltd.) was added to 100 parts by weight of the solid content of the polymer 4 to obtain an adhesive syrup (hereinafter referred to as adhesive 3). .

Table 1 shows the results of the following evaluation of the pressure-sensitive adhesives 1 to 3 obtained in the above Production Examples.

(Measurement of Creep) Creep of each of the pressure-sensitive adhesives 1 to 3 was measured at 23 ° C., 50 ° C., 70 ° C. and 90 ° C. The measurement of creep is as described above.

(Slope of linear equation) The relationship where each temperature is plotted on the horizontal axis and the value (α) of (creep of adhesive at each temperature) / (creep of adhesive at 23 ° C.) is plotted on the vertical axis. Was derived into a linear expression (least square method), and the slope of the linear expression was obtained. FIG. 3 shows the plot values and straight lines represented by linear expressions in each example.

[0045]

[Table 1] Examples 1 and 2, Comparative Examples 1 to 3 An 80 μm-thick triacetyl cellulose film (a polarizer) was stretched 5 times in an aqueous iodine solution after drying a 80 μm-thick polyvinyl alcohol film (polarizer). A polarizing plate having a transparent protective layer was obtained by adhering a transparent protective film) via an adhesive. Separately, an optical compensation film (Fuji Photo Film Co., Ltd., trade name: WV
A02B) was prepared. Using the polarizing plate, the optical compensation film and the pressure-sensitive adhesive shown in Table 2, the polarizing plate / pressure-sensitive adhesive layer A / optical compensation film / pressure-sensitive adhesive layer B / peeling paper are laminated in this order to form a pressure-sensitive adhesive polarizing plate with an optical compensation film. Obtained. The thickness of the pressure-sensitive adhesive layers A and B after drying is 25.
It was applied and formed to a thickness of μm.

Table 2 shows the results of the following evaluation of the pressure-sensitive adhesive polarizing plate with an optical compensation film obtained in the above Examples and Comparative Examples.

(Display Unevenness) As shown in FIG. 4, the adhesive polarizing plate with the optical compensation film obtained in each of Examples and Comparative Examples was provided on both sides of an 18-inch TFT-LCD panel. The sheet was cut at 45 ° to the flow direction and bonded. This is lit to display black and 1
Liquid color distribution measurement device C manufactured by Minolta Co., Ltd.
In-plane luminance was measured using A-1000, and the standard deviation of in-plane luminance was determined. The smaller the standard deviation, the less display unevenness.

(Extrusion of Adhesive) The adhesive polarizing plate with an optical compensation film obtained in each of the examples and comparative examples was punched out with a Thompson, and the end was observed with a microscope to confirm whether the adhesive had extruded. .

[0049]

[Table 2] In Examples, the pressure-sensitive adhesive of the pressure-sensitive adhesive layer A and the pressure-sensitive adhesive layer B is:
The creep at room temperature is 50 μm or less in each case, and the pressure-sensitive adhesive of the pressure-sensitive adhesive layer A has a gradient of 0.04 or more in the above-mentioned linear equation, has less display unevenness, and has less protrusion of the pressure-sensitive adhesive. In particular, in Example 2, it is recognized that the inclination in the first-order equation has a relationship of pressure-sensitive adhesive layer A> pressure-sensitive adhesive layer B, and that display unevenness is further reduced.

On the other hand, in Comparative Examples 1 and 2, the pressure-sensitive adhesives of the pressure-sensitive adhesive layers A and B had a creep at room temperature of 50 μm or less, and the pressure-sensitive adhesive did not protrude much. The agent has a slope of less than 0.04 in the above-mentioned linear expression, and there are many display irregularities. In Comparative Example 3, the creep at 23 ° C. exceeded 50 μm and the display unevenness was good, but the slope in the above-mentioned linear equation was smaller than 0.04, and the protrusion of the adhesive was increased.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a polarizing plate with an optical compensation film.

FIG. 2 is a front view and a side view showing a creep measurement test of the pressure-sensitive adhesive.

FIG. 3 is a diagram in which pressure-sensitive adhesives of Examples and Comparative Examples are approximated by a linear expression of the present invention.

FIG. 4 shows liquid crystal panels prepared in Examples and Comparative Examples.

[Explanation of symbols]

 Reference Signs List 1 polarizing plate 2 optical compensation film 3 liquid crystal cell A adhesive layer A B adhesive layer B

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ning Takahashi 1-1-2 Shimohozumi, Ibaraki-shi, Osaka Nitto Denko Co., Ltd. No. Nitto Denko F-term (reference) 2H049 BA02 BA06 BA27 BA42 BB03 BB33 BB51 BC03 BC04 BC14 BC22 2H091 FA08X FA08Z FA11X FA11Z FB02 FB13 FC07 FC29 FC30 FD06 FD14 FD21 GA13 HA07 LA02 LA04 LA11 LA12

Claims (4)

[Claims] 1. An optical compensation film comprising an optical compensation film provided on a polarizing plate via an adhesive layer A, and an adhesive B layer provided on a surface of the optical compensation film opposite to the adhesive layer A. In the pressure-sensitive adhesive polarizing plate, each of the pressure-sensitive adhesive layers A and B has a creep of 50 μm or less in the following test at 23 ° C., and the pressure-sensitive adhesive layer A has a temperature of 23 ° C. to 90 ° C. In the range, the relationship between the temperature on the horizontal axis and the value expressed by (creep of the adhesive at each temperature) / (creep of the adhesive at 23 ° C.) on the vertical axis was approximated by a linear equation. Wherein the gradient of the linear equation is 0.04 or more. Test: Adhesive tape adhered to test plate 10mm x 10m
m, and the amount of displacement (creep) of the adhesive tape when a load of 200 g was applied for 1 hour was measured. 2. The pressure-sensitive adhesive layer A and the pressure-sensitive adhesive layer B,
In the temperature range from 23 ° C. to 90 ° C., the temperature on the horizontal axis is plotted on the vertical axis (creep of the adhesive at each temperature) /
When the relationship plotting the value represented by (creep of the adhesive at 23 ° C.) is approximated by a linear equation, the gradient of the linear equation is that the adhesive layer A> the adhesive layer B. The pressure-sensitive adhesive polarizing plate with an optical compensation film according to claim 1. 3. The pressure-sensitive adhesive polarizing plate with an optical compensation film according to claim 1, wherein a transparent protective layer is provided on the polarizing plate. 4. A liquid crystal display device using a liquid crystal panel wherein the adhesive polarizing plate according to claim 1, 2 or 3 is attached to at least one side of a liquid crystal cell.