JP2002258269A - Adhesive optical film for liquid crystal display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive optical film for a liquid crystal display having a liquid crystal polymer layer between a base film and a pressure-sensitive adhesive layer. To provide an adhesive optical film for a liquid crystal display having excellent properties. SOLUTION: This is an adhesive optical film for a liquid crystal display in which a liquid crystal polymer layer, an anchor coat layer and an acrylic adhesive layer are laminated in this order on a base film, wherein the anchor coat layer is a primary amino acid. An adhesive optical film for a liquid crystal display, which is formed of a poly (meth) acrylate having a group.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-sensitive adhesive optical film for a liquid crystal display in which a pressure-sensitive adhesive layer for sticking to a glass substrate of a liquid crystal panel is provided on one side of an optical film. Further, the present invention relates to an adhesive polarizing film for a liquid crystal display, wherein the adhesive optical film is provided on at least one surface of a polarizer. Further, the present invention relates to a liquid crystal display device using the adhesive polarizing film.

[0002]

2. Description of the Related Art In a liquid crystal display (hereinafter abbreviated as LCD), it is indispensable to arrange polarizing elements on both sides of a liquid crystal cell (glass substrate) forming the outermost surface of a liquid crystal panel due to its image forming method. Generally, a polarizing film is attached to the outermost surface of the liquid crystal panel.

[0003] The polarizing film is bonded to the liquid crystal cell through an adhesive, but if the adhesiveness to the liquid crystal cell is poor, display failure may occur. High adhesiveness is required. In addition, after bonding to the liquid crystal cell, the polarizing film is not partially peeled off by heating or humidification.
Is required. On the other hand, the adhesive is capable of peeling off the polarizing film from the outermost surface of the liquid crystal panel even when the bonding position of the polarizing film is incorrect or a problem such as a foreign substance biting into the bonding surface occurs, and the adhesive can be replaced. Simplicity of peeling (reworkability) is required. Thus, LCD
The pressure-sensitive adhesive used for the polarizing film is required to have two characteristics of adhesive durability and reworkability. In order to improve the reworkability of such a pressure-sensitive adhesive, for example, Japanese Patent Application Laid-Open No. Hei 10-20118 discloses an anchor coat layer (1) on a polarizing plate (surface triacetyl cellulose film).
Pressure-sensitive adhesive polarizing plate in which a polyacrylester layer having a secondary amino group) and then an acrylic pressure-sensitive adhesive are sequentially laminated.

In addition, since the LCD performs display by changing the light transmittance by changing the geometrical arrangement of the liquid crystal molecules, the apparent arrangement of the liquid crystal molecules changes depending on the viewing direction of the LCD. There is a problem that required characteristics cannot be obtained. It is important to widen the viewing angle by improving the quality of such LCDs, and in order to improve the problem related to display quality, a liquid crystal polymer or the like is formed between the polarizing film and the liquid crystal layer on the surface of the liquid crystal panel. An optical compensation layer is often provided. The liquid crystal polymer layer is generally provided as an optical film laminated on a plastic film (substrate film) as a support, and the optical film can be attached alone to a liquid crystal cell, or a polarizing film. The laminate can be bonded to a liquid crystal cell.

[0005] In the pressure-sensitive adhesive optical film provided with the liquid crystal polymer layer, the laminating position of the liquid crystal polymer layer is not particularly limited, but it is easy to technically design and provide productivity between the base film and the pressure-sensitive adhesive layer. Good. However, when the liquid crystal polymer layer is provided on the pressure-sensitive adhesive optical film, the pressure-sensitive adhesive properties, particularly reworkability, tend to deteriorate. That is,
In the adhesive used for the adhesive optical film, the adhesive property between the adhesive layer and the liquid crystal polymer layer is poor, so the reworkability is lacking, and when the optical film is peeled off during rework,
There is a problem that a part of the pressure-sensitive adhesive layer remains on the outermost surface of the liquid crystal panel.

[0006]

The present invention relates to a pressure-sensitive adhesive optical film for a liquid crystal display having a liquid crystal polymer layer between a base film and a pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive has an adhesive property and an adhesion durability. An object of the present invention is to provide a pressure-sensitive adhesive optical film for a liquid crystal display, which is excellent in reworkability. Still another object of the present invention is to provide a pressure-sensitive adhesive polarizing film for a liquid crystal display in which the pressure-sensitive adhesive optical film and a polarizer are combined.

[0007]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above problems, and as a result, have found that the above object can be achieved by the following adhesive optical film for a liquid crystal display, thereby completing the present invention. Reached.

That is, the present invention relates to an adhesive optical film for a liquid crystal display in which a liquid crystal polymer layer, an anchor coat layer and an acrylic adhesive layer are laminated in this order on a base film, wherein the anchor coat layer is , 1
The present invention relates to a pressure-sensitive adhesive optical film for a liquid crystal display, which is formed of a poly (meth) acrylate having a secondary amino group.

In the present invention, an anchor coat layer is provided between the liquid crystal polymer layer and the acrylic pressure-sensitive adhesive layer, and the adhesion between the acrylic pressure-sensitive adhesive layer and the liquid crystal polymer layer is good. Therefore, peeling during rework is performed between the outermost surface of the liquid crystal panel and the acrylic pressure-sensitive adhesive layer, and reworkability is good. The acrylic pressure-sensitive adhesive layer of the pressure-sensitive adhesive optical film also has good adhesiveness and durability to the LCD surface.

In the pressure-sensitive adhesive optical film for a liquid crystal display, a poly (meth) acrylate having a primary amino group, which is a material for forming an anchor coat layer, comprises:
It is preferable because it has good compatibility with the acrylic pressure-sensitive adhesive, and the primary amino group in the poly (meth) acrylate reacts with the remaining reaction component in the pressure-sensitive adhesive to improve the anchoring force.

In the pressure-sensitive adhesive optical film for a liquid crystal display, the liquid crystal polymer layer is preferably a discotic liquid crystal layer obtained by curing a discotic liquid crystal monomer by irradiating ultraviolet rays. In the pressure-sensitive adhesive optical film for a liquid crystal display, the liquid crystal polymer layer preferably has an optical compensation function.

The discotic liquid crystal layer has an optical compensation function which is completely opposite to the anisotropy of light caused by the alignment of liquid crystal molecules in a TN type liquid crystal or the like, and the liquid crystal polymer layer has a discotic liquid crystal. The monomer can be easily formed by curing by ultraviolet irradiation. In particular, crosslinking and curing are durable (eg, heat resistance, moisture resistance,
It is preferable in terms of improving chemical resistance, mechanical strength, and the like. A liquid crystal polymer layer having an optical compensation function functions as an optical compensation film and is effective.

In the pressure-sensitive adhesive optical film for a liquid crystal display, the coating amount of the anchor coat layer is 0.1 cubic centimeter or more per square meter, and more preferably 0.1 cubic centimeter.
It is preferably at least 2 cubic centimeters, more preferably at least 0.4 cubic centimeters. The coating amount is 5
It is preferably not more than cubic centimeter, more preferably not more than 1 cubic centimeter, and further preferably not more than 0.5 cubic centimeter. Generally, it is preferably 0.1 to 5 cubic centimeters.

It is preferable that the optimum coating amount (solid content) of the poly (meth) acrylate having a primary amino group be within the above range. The amount of coating per square meter is 0.
If it is less than 1 cubic centimeter, sufficient adhesiveness is not produced between the anchor coat layer and the acrylic pressure-sensitive adhesive layer, and reworkability tends to be insufficient. On the other hand, if it exceeds 5 cubic centimeters, the polyacrylate ester, which is a material for forming the anchor coat layer, tends to undergo cohesive failure, which may adversely affect reworkability.

Further, the present invention provides a liquid crystal display characterized in that a base film surface of the pressure-sensitive adhesive optical film for a liquid crystal display on which an acrylic pressure-sensitive adhesive layer is not provided is provided on at least one surface of the polarizer. And a pressure-sensitive adhesive type polarizing film. Furthermore, the present invention relates to a liquid crystal display device using the pressure-sensitive adhesive polarizing film.

The pressure-sensitive adhesive optical film for a liquid crystal display can be installed on at least one side of a polarizer and used as a pressure-sensitive adhesive type polarizing film. The adhesive polarizing film of the present invention is used by being bonded to a glass substrate on the outermost surface of a liquid crystal panel.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The adhesive optical film of the present invention comprises:
As shown in FIG. 1, a liquid crystal polymer layer 2, an anchor coat layer 3, and an acrylic pressure-sensitive adhesive layer 4
Are stacked in this order. Further, a release sheet 5 can be provided on the pressure-sensitive adhesive layer 4. In FIG. 1, the liquid crystal polymer layer 2 and the like are laminated on one side of the base film 1, but the liquid crystal polymer layer 2 and the like may be laminated on both sides of the base film 1.

Although an appropriate transparent material can be used for the base film 1, a transparent polymer excellent in transparency, mechanical strength, heat stability, moisture barrier property and the like is preferably used. Although the thickness of the base film 1 is not particularly limited, it is 25 to 50.
Generally, about 0 μm. Examples of the transparent polymer forming the base film 1 include polyester polymers such as polyethylene terephthalate and polyethylene naphthalate, cellulose polymers such as cellulose diacetate and cellulose triacetate, acrylic polymers such as polymethyl methacrylate, and polystyrene. Styrene-based polymers such as acrylonitrile-styrene copolymer (AS resin), polycarbonate-based polymers, and the like. Further, polyethylene, polypropylene, polyolefin having a cyclo- or norbornene structure, ethylene
Polyolefin-based polymers such as propylene copolymers,
Vinyl chloride polymer, amide polymer such as nylon or aromatic polyamide, imide polymer, sulfone polymer, polyether sulfone polymer, polyether ether ketone polymer, polyphenylene sulfide polymer, vinyl alcohol polymer, vinylidene chloride A polymer, a vinyl butyral-based polymer, an arylate-based polymer, a polyoxymethylene-based polymer, an epoxy-based polymer, or a blend of the above-mentioned polymers is also an example of the polymer forming the base film 1. Among these transparent polymers forming the base film 1, cellulose triacetate is preferred.

The liquid crystal polymer layer 2 is formed of a liquid crystalline material to be an optically anisotropic layer. As a liquid crystal material, a conjugated linear atomic group (mesogen) that imparts liquid crystal orientation
Are introduced into the main chain or side chain of the polymer. For example, a discotic liquid crystal polymer, a nematic liquid crystal polymer, and the like can be given. Particularly, a discotic liquid crystal polymer is preferable.
The liquid crystal polymer layer 2 may be formed by, for example, developing an ultraviolet-curable liquid crystal monomer on an alignment treatment surface on the base film 1, performing heat treatment to align the liquid crystal monomer, and then curing the liquid crystal monomer by irradiation with ultraviolet light. This is performed by a method in which a polymer solution is developed and heat-treated to align the liquid crystal polymer. The thickness of the liquid crystal polymer layer 2 is preferably about 0.5 to 3 μm.

The material for forming the anchor coat layer 3 is 1
The poly (meth) acrylate having a secondary amino group is obtained, for example, by copolymerizing (meth) acrylate and a monomer copolymerizable therewith, followed by amine modification. The poly (meth) acrylate preferably has a Tg of 10 to 150 ° C. in order to obtain an effective cohesive force for forming the anchor coat layer. In addition, (meth) acrylate means acrylate and / or methacrylate.

Examples of the above (meth) acrylate include methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate, hexyl (meth) acrylate,
Examples include 2-ethylhexyl (meth) acrylate, octyl (meth) acrylate, nonyl (meth) acrylate, and nonyl (meth) acrylate. Examples of the monomer copolymerizable therewith include monomers having a functional group such as (meth) acrylic acid, glycidyl (meth) acrylate, and 2-hydroxyethyl methacrylate (meth) acrylate. These monomers are combined so that the Tg of the poly (meth) acrylate is 10 to 150 ° C.

Examples of the amine modification method include a method of adding ethyleneimine to a carboxyl group in a poly (meth) acrylate, a method in which a carboxyl group or a hydroxyl group in a polyacrylate is reacted with an excess of diisocyanate, and A method in which a primary amino group is introduced into a terminal by reacting with an excess of a diamine, or the like, may be used.

Also, poly (meth) having a primary amino group
The acrylate is obtained by copolymerizing the (meth) acrylate with a monomer having a primary amino group at a terminal. Examples of the monomer having a terminal primary amino group include aminoethyl (meth) acrylate and aminopropyl (meth) acrylate.

Commercially available poly (meth) acrylates having a primary amino group include, for example, “Polyment NK350” and “Polyment N” manufactured by Nippon Shokubai Kogyo Co., Ltd.
K380 ".

The formation of the anchor coat layer 3 is obtained by applying a solution obtained by dissolving the material for forming the anchor coat layer in an organic solvent such as toluene on the liquid crystal polymer layer 2 and drying. The coating amount of the anchor coat layer is as described above, and the thickness is appropriately adjusted according to the coating amount.

As the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer 4, a general acrylic pressure-sensitive adhesive is used. As an acrylic pressure-sensitive adhesive, the weight average molecular weight of its base polymer is
Preferably, it is about 300,000 to 2.5 million.

As the monomer used for the acrylic polymer as the base polymer of the acrylic pressure-sensitive adhesive, various alkyl (meth) acrylates can be used. Specific examples of the alkyl (meth) acrylate include, for example,
Methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, (meth) acrylic acid 2
-Ethylhexyl and the like, which can be used alone or in combination. Among them, those in which butyl acrylate is used as a monomer unit of the base polymer in an amount of 30% by weight or more are preferable because the base polymer can be set so as to exhibit tackiness by adjusting the relaxation modulus of the base polymer.

It is preferable to use a small amount of (meth) acrylic acid instead of a part of the alkyl (meth) acrylate 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 together to the extent that the adhesive properties of the acrylic polymer are not impaired.

The acrylic polymer can be produced by various known methods. For example, a radical polymerization method such as a bulk polymerization method, a solution polymerization method, or a suspension polymerization method can be appropriately selected. As the radical polymerization initiator, various known azo-based and peroxide-based initiators can be used. Among the above production methods, a solution polymerization method is preferable, and a polar solvent such as ethyl acetate or toluene is generally used as a solvent for the acrylic polymer.

The pressure-sensitive adhesive preferably contains 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, a silane coupling agent, etc., as appropriate within a range not departing from the object of the present invention. Can also be used.

The formation of the pressure-sensitive adhesive layer 4 is not particularly limited, and a method of applying a pressure-sensitive adhesive (solution) to the anchor coat layer 3 and drying the same, and a method of anchoring an optical film with a release sheet 5 provided with the pressure-sensitive adhesive layer 4. A method of transferring to the coat layer 3 is exemplified. The thickness of the pressure-sensitive adhesive layer 4 (dry film thickness) is not particularly limited, but is preferably about 10 to 40 μm.

The material of the release sheet 5 is as follows.
Examples thereof include paper, synthetic resin films such as polyethylene, polypropylene, and polyethylene terephthalate. The surface of the release sheet 5 may be subjected to a release treatment such as a silicone treatment, a long-chain alkyl treatment, or a fluorine treatment, as necessary, in order to enhance the releasability from the pressure-sensitive adhesive layer 4.

As shown in FIG. 2, the pressure-sensitive adhesive optical film for a liquid crystal display has a surface on which the acrylic pressure-sensitive adhesive layer 4 of the base film 1 is not provided on at least one surface of the polarizer 6. It can be a polarizing film. Usually, the polarizer 6 and the base film 1 are in close contact with each other via an adhesive or the like.

The polarizer 6 is not particularly limited, and various types can be used. Examples of the polarizer include dichroic dyes such as iodine and dichroic dyes on a hydrophilic polymer film such as a polyvinyl alcohol-based film, a partially formalized polyvinyl alcohol-based film, and an ethylene-vinyl acetate copolymer-based partially saponified film. Examples thereof include a film obtained by adsorbing a substance and stretched, and a polyene-based oriented film such as a dehydrated product of polyvinyl alcohol and a dehydrochlorinated product of polyvinyl chloride. Although the thickness of the polarizer is not particularly limited,
The thickness is generally about 5 to 80 μm. Among these, those obtained by stretching a polyvinyl alcohol-based film and adsorbing and orienting a dichroic material (iodine, dye) are preferably used.

The liquid crystal display device can be formed according to a conventional method. The adhesive polarizing film can be installed on one side or both sides of the crystal panel. Further, in the liquid crystal display device, an illumination system using a backlight or a reflection plate or the like can be appropriately formed.

[0036]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments and the like specifically showing the configuration and effects of the present invention will be described below.

Example 1 (1) Preparation of Base Polymer of Acrylic Adhesive In a separable flask equipped with a thermometer, an entrainer, a reflux condenser and a nitrogen gas inlet, 100 parts by weight of butyl acrylate and acrylic 5 Parts by weight, 0.4 parts by weight of benzoyl peroxide and ethyl acetate were added so that the active ingredient was 70% by weight. Nitrogen gas was supplied, and nitrogen replacement was performed for about 1 hour while stirring. Next, the separable flask was heated to 60 ° C. to start the reaction. After reacting for 6 hours, a base polymer was obtained. The molecular weight of the base polymer was 1.6 million.

(2) Preparation of Acrylic Adhesive With respect to 100 parts by weight (solid content) of the above base polymer,
An acrylic pressure-sensitive adhesive was prepared by adding 0.8 parts by weight of a crosslinking agent (polyfunctional isocyanate compound, manufactured by Nippon Polyurethane Co., Ltd.) and 0.02 part of a silane coupling agent (KBM403, manufactured by Shin-Etsu Chemical Co., Ltd.). This acrylic pressure-sensitive adhesive was applied on a release-treated polyethylene terephthalate film having a thickness of 38 μm, and dried at 150 ° C. for 3 minutes.
A μm pressure-sensitive adhesive sheet was obtained.

(3) Formation of Anchor Coat Layer An 80 μm-thick triacetylcellulose film is adhered to one side of a 20 μm-thick polarizer, and a disc is The triacetyl cellulose film surface of the film on which the tick liquid crystal layer was formed was adhered to produce a polarizing film with an optical compensation layer. A coating solution prepared by diluting Polyment NK380 manufactured by Nippon Shokubai Chemical Co., Ltd. to a solid content of 0.5% by weight with toluene was applied to the discotic liquid crystal layer surface of the polarizing film with an optical compensation layer. Using a coater (# 3), apply and dry
An anchor coat layer having an application amount of 0.2 cubic centimeter (per square meter) was formed.

(4) Preparation of pressure-sensitive adhesive polarizing film The pressure-sensitive adhesive sheet obtained in (2) is bonded to the anchor coat layer of the polarizing film with an optical compensation layer formed in (3) above. It was created.

(5) Rework test A sample (adhesive polarizing film) obtained by removing the polyethylene terephthalate film from the adhesive polarizing film obtained in (4) above was bonded to a glass cell for testing by a roller. The test glass cell contains a non-alkali glass plate (thickness 0.7 mm, size 300 mm x 220 m
m) was bonded via a 2 μm spacer. Before bonding, thoroughly wipe the surface of the test glass cell with a soft cloth impregnated with methyl alcohol, etc.
Thereafter, it was wiped empty and washed well. After bonding, the sample was put into an autoclave (50 ° C., 5 atm × 15 minutes). Thereafter, a rework test was performed. At the time of reworking, a cutter was formed at the corner of the sample, and the sample was slowly peeled from the glass cell while being careful not to break the glass cell. Thereafter, the degree of adhesion of the adhesive on the surface of the glass cell was visually observed. The case where no adhesion of the adhesive was recognized was evaluated as “Evaluation 1”.
0 ", and the case where the adhesion of the pressure-sensitive adhesive was observed on the entire surface was evaluated as" Evaluation 0 ". No adhesion of the adhesive was observed on the surface of the glass cell, and the reworkability was good. In addition, the pressure-sensitive adhesive polarizing film had good adhesiveness and adhesive durability.

Comparative Example 1 An adhesive polarizing film was prepared in the same manner as in Example 1 except that the polarizing film with an optical compensation layer was used in the same manner as in Example 1 (3), without forming an anchor coat layer and without treatment. .
The obtained sample (adhesive polarizing film) was subjected to the rework test (5) in the same manner as in Example 1. As a result, there was adhesion of the adhesive on the glass cell surface, and the rework property was judged to be "Evaluation 3."

Reference Example 1 In Example 1 (3), the solid content of the coating solution was 5% by weight.
An adhesive polarizing film was prepared in the same manner as in Example 1 except that the coating amount of the anchor coat layer was changed to 7 cubic centimeters (per square meter). The obtained sample (adhesive polarizing film) was subjected to a rework test (5) in the same manner as in Example 1. As a result, the anchor coat layer caused cohesive failure, and the anchor coat layer and the adhesive were coated on the entire surface of the glass cell surface. Adhesion was observed, and the reworkability was determined to be "evaluation 0".

Reference Example 2 Example 1 was repeated except that the solid content of the coating solution was set to 0.1% by weight and the coating amount of the anchor coat layer was set to 0.05 cubic centimeter (per square meter). In the same manner as described above, an adhesive polarizing film was prepared. The obtained sample (adhesive polarizing film) was subjected to (5) rework test in the same manner as in Example 1. As a result, the adhesive was adhered to the glass cell surface, and the rework property was judged to be "evaluation 9".

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an adhesive optical film.

FIG. 2 is a cross-sectional view of an adhesive polarizing film.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base film 2 Liquid crystal polymer layer 3 Anchor coat layer 4 Acrylic adhesive layer 5 Release sheet 6 Polarizer

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Ning Takahashi 1-1-2 Shimohozumi, Ibaraki-shi, Osaka Nitto Denko Corporation (72) Inventor Atsushi Kitagawa 1-1-2 Shimohozumi, Ibaraki-shi, Osaka Nitto Denko Co., Ltd. (72) Inventor Mamoru Masada 1-1-2 Shimohozumi, Ibaraki-shi, Osaka Nitto Denko Corporation F-term (reference) 2H049 BA02 BA06 BA42 BB03 BB46 BB51 BB54 BC22 2H091 FA08X FA08Z FD06 FD14 FD15 GA01 HA07 LA30 4F100 AH03C AJ06 AK01A AK25C AK25D AK25G AK25K AK42 AK80B AL06C AS00B AT00A AT00E BA04 BA05 BA07 CB05D EJ08B EJ54B GB41 JL00B JL13D

Claims (6)

[Claims] 1. An adhesive optical film for a liquid crystal display comprising a substrate film on which a liquid crystal polymer layer, an anchor coat layer and an acrylic adhesive layer are laminated in this order, wherein the anchor coat layer is a primary An adhesive optical film for a liquid crystal display, which is formed of a poly (meth) acrylate having an amino group. 2. The adhesive optical film for a liquid crystal display according to claim 1, wherein the liquid crystal polymer layer is a discotic liquid crystal layer obtained by curing a discotic liquid crystal monomer by irradiation with ultraviolet rays. 3. The adhesive optical film for a liquid crystal display according to claim 1, wherein the liquid crystal polymer layer has an optical compensation function. 4. The adhesive optical film for a liquid crystal display according to claim 1, wherein the coating amount of the anchor coat layer is 0.1 to 5 cubic centimeters per square meter. 5. The method according to claim 1, wherein at least one surface of the polarizer is provided.
4. A pressure-sensitive adhesive polarizing film for a liquid crystal display, wherein a base film surface of the pressure-sensitive adhesive optical film for a liquid crystal display according to any one of the items 4 is not provided with an acrylic pressure-sensitive adhesive layer. 6. A liquid crystal display device using the adhesive polarizing film for a liquid crystal display according to claim 5.