CN101458357A - Polarizing paltes, liquid crystal panal and liquid crystal display device using the same - Google Patents

Abstract

The invention provides a polarization plate group for liquid crystal panel composed of a first polarization plate and a second polarization plate, wherein the first polarization plate comprises a first polarization optical thin-film constituted by polyvinyl alcohol resin and a transparent protection thin-film laminated on one surface of the first polarization optical thin-film, and the second polarization plate comprises a second polarization optical thin-film constituted by polyvinyl alcohol resin and an anti-dazzling thin-film laminated on one surface of the second polarization optical thin-film with turbidity (haze)value of more than 0.1% and less than 45% and the anti-dazzling thin-film comprises an acrylic resin thin-film and a hard coating layer laminated on surface of the acrylic resin thin-film opposite to the second polarization optical thin-film side with thickness of 2-30Mum. The invention also provides a liquid crystal panel using the polarization plate group and liquid crystal displaying device.

Description

Polarization plates group and the liquid crystal panel and the liquid crystal indicator that use it

Technical field

The present invention relates to a kind of liquid crystal panel with polarization plates group (set) and the liquid crystal panel and the liquid crystal indicator that use it.

Background technology

Polarization plates is the component parts as the liquid crystal panel of the main member of liquid crystal indicator; its formation is generally: the one or both sides of the polarized light film of the polyvinyl alcohol resin after comprising absorption orientation dichromatism pigment; by bond layer; the stacked guard film for example is the transparent resin film of the cellulose acetate of representative with the triacetyl cellulose.As required,, utilize bonding agent, it is fitted on the liquid crystal cells, thereby can obtain liquid crystal panel by other optical thin films.

Liquid crystal indicator is as LCD TV, LCD monitor (monitor), PC slim display frames such as (personal computer), and its purposes enlarges rapidly.The market expansion of LCD TV is especially remarkable, and is in addition, also very high to the requirement of cost degradation.Polarization plates as liquid crystal display television by using, what use in the past is to utilize the water system bonding agent, at the stacked triacetylcellulose film in the two sides of the polarized light film that constitutes by the polyvinyl alcohol resin film (TAC film), attach the polarization plates that phase-contrast film forms by bonding agent in the one side of this polarization plates.As the phase-contrast film that is laminated on the polarization plates, can use the stretch process product of polycarbonate resin film or the stretch process product of cyclic olefin resins film etc., but in liquid crystal display television by using, use the phase-contrast film that constitutes by the uneven considerably less cyclic olefin resins film of phase differential at high temperature mostly.

In the applying product of polarization plates and the phase-contrast film that constitutes by stretch ring olefin resin film,, attempted reducing the parts number of packages or the simplified manufacturing technique of formation in order to boost productivity and to lower the goods cost.For example open flat 8-No. 43812 communique (patent documentations 1 the spy, especially with reference to embodiment 4) in disclose: stacked TAC film on the one side of polarized light film, with its opposition side not by the TAC film, stacked structure with cycloolefin (norborene) resin film of phase difference function.

In big picture LCD TV purposes, for example as the wall hung television purposes etc., the needs (needs) of the further slimming of liquid crystal indicator and lightness are remarkable all the more.In this case, about liquid crystal panel and component parts thereof, below become problem.

(1) considers if liquid crystal panel is applicable to big picture wall hung television, the chance that then contacts staff becomes many, in addition, also become and adhere to dust easily, it is many that thereby the cleaning of picture (cleaning) becomes, in this case, must become and be subjected to the friction that this contact causes and also be difficult to damaged even the liquid crystal panel outmost surface is the polarization plates outmost surface.

(2) the slim big pictureization of corresponding liquid crystal panel, the essential intensity of strengthening liquid crystal panel.

(3) slimming of corresponding LCD TV must be carried out thin-walled property to the member that uses.

(4) must prevent owing to liquid crystal panel and the gap turn narrow of backlight (back light) system at the back side, liquid crystal panel contacts the toroidal that takes place with backlight system inequality or Newton ring (Newton Ring).

Summary of the invention

The inventor etc. concentrate on studies in order to solve described problem, found that combination by using 2 polarization plates as described below is as 2 polarization plates of the component parts of liquid crystal panel, even can obtain thin warpage and also outstanding liquid crystal panel and the liquid crystal indicator of identification that can realize that also physical strength, antisitic defect are outstanding, can prevent liquid crystal panel, so that finish the present invention.Wherein 2 polarization plates are respectively: be laminated with the polarization plates that transparent protective film forms on the one side of the polarized light film that is made of polyvinyl alcohol resin; Be laminated with turbidity (haze) value that possesses the acryl resin film on the one side of the polarized light film that is made of polyvinyl alcohol resin is the polarization plates that the anti-dazzle property film more than 0.1%, below 45% forms.

Promptly; if utilize the present invention; a kind of polarization plates group then can be provided; it is the liquid crystal panel polarization plates group that is made of the 1st polarization plates and the 2nd polarization plates; wherein; the 1st polarization plates has the 1st polarized light film that is made of polyvinyl alcohol resin and is laminated in transparent protective film on the one side of the 1st polarized light film, and the 2nd polarization plates has the 2nd polarized light film that is made of polyvinyl alcohol resin and is laminated in the anti-dazzle property film that turbidity (haze) value on the one side of the 2nd polarized light film is in the scope more than 0.1%, below 45%.In the present invention, described anti-dazzle property film possesses the 2nd acryl resin film at least.

At this; transparent protective film in the 1st polarization plates is stretching pet film or acryl resin film, also can and then have optical compensating film or protective film on the face of the opposition side that is laminated in the face that is laminated with transparent protective film.In addition, the 2nd polarization plates also can and then have optical compensating film or the protective film on the face of the opposition side that is laminated in the face that is laminated with anti-dazzle property film in the 2nd polarized light film.

In addition,, then can also provide a kind of liquid crystal panel, wherein, dispose described the 1st polarization plates, liquid crystal cells and described the 2nd polarization plates successively and form if utilize the present invention.In liquid crystal panel of the present invention, the face of opposition side that the 1st polarization plates is configured to the face that is laminated with transparent protective film in the 1st polarized light film is relative with liquid crystal cells.In addition, to be configured to the face of opposition side of the face that is laminated with anti-dazzle property film in the 2nd polarized light film relative with liquid crystal cells for the 2nd polarization plates.

And then, if utilize the present invention, then can also provide a kind of liquid crystal indicator, wherein, possess backlight, light diffusing sheet, liquid crystal panel successively, this liquid crystal panel is described liquid crystal panel of the present invention.In liquid crystal indicator of the present invention, it is relative with light diffusing sheet that this liquid crystal panel is configured to the 1st polarization plates.Liquid crystal indicator of the present invention also can have the brightness improving sheet between light diffusing sheet and liquid crystal panel, in this case, it is relative with the brightness improving sheet that liquid crystal panel is configured to the 1st polarization plates.

If utilize according to specific polarization plates group (set) of the present invention, then can utilize making of stretching polyethylene terephthalate or acryl resin film to be used for realizing impaired the preventing on raising, thin-walled property and the surface of the physical strength of liquid crystal panel, can utilize simultaneously liquid crystal panel warpage prevent avoid and the contacting of the backlight system that contains light diffusing sheet, can prevent the inequality or the Newton ring of toroidal, thereby realize the raising of identification.In addition, the acrylic resin film is the film that is difficult to show phase differential, even so under the sheet material that brightness improving sheet etc. is had the polarized light characteristic or film are disposed at situation between liquid crystal panel and the backlight, also can keep described characteristic and prevent the irregular colour bad situations such as (interfering uneven) that this sheet material or film cause simultaneously.But this type of polarization plates group and use its liquid crystal panel can suitably be applicable to the liquid crystal display television by using liquid crystal indicator of big picture liquid crystal display television by using liquid crystal indicator, especially wall hanging.

Description of drawings

Fig. 1 is the summary sectional view of an example of the basic layer structure of expression liquid crystal indicator of the present invention.

Fig. 2 is the summary sectional view of an example of the basic layer structure of expression liquid crystal indicator of the present invention.

Among the figure, 10-backlight, 20-the 1 polarization plates, 21-the 1 polarized light film, 23,33-optical compensating film, 25-stretching pet film, 25 '-acrylic resin, 30-the 2 polarization plates, 31-the 2 polarized light film, 34-anti-dazzle property film, 35-acrylic resin film, 36-hard conating, 40-liquid crystal cells, 50-light diffusing sheet.

Embodiment

＜polarization plates 〉

Polarization plates group of the present invention is made of the 1st polarization plates and these 2 polarization plates of the 2nd polarization plates, and they are used as the component parts of liquid crystal panel.Liquid crystal panel can be by stacked the 1st polarization plates on the one side of liquid crystal cells, and stacked the 2nd polarization plates is made on another side.The 1st polarization plates is used as the rear side polarization plates of liquid crystal panel, and the 2nd polarization plates is used as the front face side polarization plates of liquid crystal panel.At this, " rear side polarization plates " is positioned at the polarization plates of backlight side when being meant liquid crystal panel being equipped on liquid crystal indicator, and " front face side polarization plates " is positioned at the polarization plates of identification side when being meant liquid crystal panel being equipped on liquid crystal indicator.Below each polarization plates is elaborated.

(the 1st polarization plates)

The 1st polarization plates is used as the rear side polarization plates of liquid crystal panel, is made by stacked transparent protective film on the one side of the 1st polarized light film that is made of polyvinyl alcohol resin.Particularly, transparent protective film is stretching polyethylene terephthalate or acryl resin film.Particularly, the 1st polarized light film is the polarized light film that absorption orientation dichromatism pigment forms in the polyvinyl alcohol resin film after unilateral stretching.

As polyvinyl alcohol resin, the polyvinyl alcohol resin that can use the saponification vinylite to obtain.As vinylite, except polyvinyl acetate as the homopolymer of vinyl acetate, can also the illustration vinyl acetate and can with the multipolymer of other monomers of its copolymerization.As other monomers that can close with vinyl acetate copolymerization, for example can enumerate unsaturated carboxylic acid class, olefines, ethene ethers, unsaturated sulfonic acid class, have the acrylic amide of ammonium etc.

The saponification degree of polyvinyl alcohol resin is generally about 85～100 moles of %, is preferably 98 moles more than the %.These polyvinyl alcohol resins also can further be modified, and for example also can use and utilize polyvinyl formal that the aldehydes modification forms or tygon acetal etc.In addition, the degree of polymerization of polyvinyl alcohol resin is generally 1,000～10, and about 000, be preferably about 1,500～5,000.

Can be with the film that this type of polyvinyl alcohol resin system film forms as the reel film of the 1st polarized light film.Method with polyvinyl alcohol resin system film is not particularly limited, can utilizes over known method system film.Thickness to polyethenol series reel film is not particularly limited, and for example is about 10 μ m～150 μ m.

The 1st polarized light film is usually through operation manufacturing as described below, that is: the operation of the such polyvinyl alcohol resin film of unilateral stretching; With dichromatism pigment dyeing polyvinyl alcohol resin film, make the operation of dichromatism pigment absorption; Handle the operation of the polyvinyl alcohol resin film that is adsorbed with the dichromatism pigment with boric acid aqueous solution; And the operation of after the processing that utilizes boric acid aqueous solution, washing.

The unilateral stretching of polyvinyl alcohol resin film can be carried out before the dyeing of dichromatism pigment, can carry out simultaneously with dyeing, perhaps also can carry out after dyeing.Carry out under the situation of unilateral stretching after dyeing, this unilateral stretching can be carried out before boric acid is handled, and also can carry out in boric acid is handled.Certainly, also can in these a plurality of stages, carry out unilateral stretching.Unilateral stretching can also can use hot-rolling to unilateral stretching to unilateral stretching between the different roller of circumferential speed.In addition, unilateral stretching can be the dry type stretching that stretches in atmosphere, also can be for stretching in the wet type of utilizing solvent to make to stretch under the state of polyvinyl alcohol resin films swell.Stretching ratio is generally about 3～8 times.

As the method for utilizing dichromatism pigment dyeing polyvinyl alcohol resin film, can enumerate by for example with the thin film dipped method in the aqueous solution that contains the dichromatism pigment of polyvinyl alcohol resin.As the dichromatism pigment, particularly, can use iodine or dichroic dye.In addition, the polyvinyl alcohol resin film preferably was implemented in the dip treating in the water before dyeing is handled.

With iodine as under the situation of dichromatism pigment, what adopt usually is the method for dipping and dyeing polyvinyl alcohol resin film in the aqueous solution that contains iodine and potassium iodide.The content of the iodine in this aqueous solution is generally in per 100 weight parts waters about 0.01～1 weight portion, and the content of potassium iodide is generally 0.5～20 weight portion in per 100 weight parts waters.The temperature of the aqueous solution of using in the dyeing is generally about 20～40 ℃, and in addition, the dip time in this aqueous solution (dyeing time) was generally about 20～1,800 seconds.

On the other hand, using under the situation of dichroic dye as the dichromatism pigment, what adopt usually is the method for dipping and dyeing polyvinyl alcohol resin film in containing the aqueous solution of water-soluble dichroic dye.The content of the dichroic dye in this aqueous solution is generally in per 100 weight parts waters 1 * 10 ^-4About～10 weight portions, be preferably 1 * 10 ^-3～1 weight portion in addition, for example also can be 1 * 10 ^-2Below about weight portion.This aqueous solution also can contain inorganic salts such as sodium sulphate as dyeing auxiliaries.The temperature of the dichroic dye aqueous solution of using in dyeing is generally about 20～80 ℃, and in addition, the dip time in this aqueous solution (dyeing time) was generally about 10～1,800 seconds.

The boric acid processing that utilizes the dichromatism pigment to dye afterwards can be carried out in the boronic acid containing aqueous solution by the polyvinyl alcohol resin after will being colored is thin film dipped.The amount of the boric acid in the boronic acid containing aqueous solution is about common 2～15 weight portions of per 100 weight parts waters, is preferably about 5～12 weight portions.Using under the situation of iodine as the dichromatism pigment, preferably in this boronic acid containing aqueous solution, contain potassium iodide.The amount of the potassium iodide in the boronic acid containing aqueous solution is about common 0.1～15 weight portion of per 100 weight portions, is preferably about 5～12 weight portions.Dip time in the boronic acid containing aqueous solution is generally 60～1, about 200 seconds, is preferably about 150～600 seconds, and then is preferably about 200～400 seconds.The temperature of boronic acid containing aqueous solution is generally more than 50 ℃, is preferably 50～85 ℃, more preferably 60～80 ℃.

Polyvinyl alcohol resin film after boric acid is handled is handled by washing usually.Washing is for example handled and can be undertaken by the polyvinyl alcohol resin film that dipping in water has been handled by boric acid.The temperature of the water during washing is handled is generally about 5～40 ℃, and dip time was generally about 1～120 second.After the washing, implement dried, thereby obtain the 1st polarized light film.Dried for example can use air drier, far infra-red heater (heater) to carry out.The temperature of dried is generally about 30～100 ℃, is preferably 50～80 ℃.The time of dried was generally about 60～600 seconds, was preferably 120～600 seconds.

Carry out implementing unilateral stretching, the dyeing that utilizes the dichromatism pigment and boric acid in this wise and handle, thereby obtain the 1st polarized light film to the polyvinyl alcohol resin film.The thickness of the 1st polarized light film for example can be for about 5～40 μ m.

The stacked transparent protective film on the one side of described the 1st polarized light film that is made of polyvinyl alcohol resin of the 1st polarization plates among the present invention is made.Outstanding as the engineering properties of the stretching polyethylene terephthalate of transparent protective film or acryl resin film, solvent resistance, scratch-resistant (scratch) property, photostability, the transparency, cost (cost) etc.; in addition, the acryl resin film is the film that is difficult to manifest phase differential.If utilize to use the polarization plates of such acryl resin film, the thin-walled property that then can obtain realizing the raising of physical strength or liquid crystal panel can suppress the outstanding liquid crystal panel and the liquid crystal indicator of identification of the irregular colour that phase differential causes etc. simultaneously.

The stretching pet film of Shi Yonging is engineering properties, solvent resistance, mar resistance, cost outstanding films such as (cost) in the present invention, use the physical strength etc. of polarization plates of the present invention of such stretching pet film outstanding, can also realize the attenuating of thickness simultaneously.In addition, whether the pet film that can utilize for example interior delay (retardation) the value affirmation of pellicular front to use in polarization plates is stretched.

At this, polyethylene terephthalate is meant the above resin for being made of ethylene glycol terephthalate of 80 moles of % of repetitive.As other copolymerization compositions, can enumerate m-phthalic acid, right-β-oxygen ethoxybenzoic acid, 4,4 '-dicarboxyl diphenyl, 4,4 '-benzophenonedicarboxylic acid, two (4-carboxyl phenyl) ethane, hexane diacid, decanedioic acid, m-phthalic acid-5-sodium sulfonate, 1, dicarboxylic acid compositions such as 4-dicarboxyl cyclohexane, for example diol components such as the ethylene oxide adduct of propylene glycol, butylene glycol, neopentyl glycol, diglycol, cyclohexanediol, bisphenol-A, polyglycol, polypropylene glycol, polytetramethylene glycol.Can be used in combination these dicarboxylic acid composition or diol components more than 2 kinds as required.In addition, also can be with described dicarboxylic acids composition or diol component, and with hydroxycarboxylic acids such as P-hydroxybenzoic acid.Other copolymerization compositions so also can comprise dicarboxylic acid composition and/or the diol component that contains a spot of amido link, urethane bond, ehter bond, carbonic acid ester bond etc.

As the autofrettage of polyethylene terephthalate, can be suitable for any autofrettages such as so-called ester interchange that so-called directly polymerization, the dimethyl ester that makes terephthalic acid (TPA) and the ethylene glycol (and dimethyl ester and/or other glycol of other dicarboxylic acids compositions that add as required) that make terephthalic acid (TPA) and the direct reaction of ethylene glycol (and other dicarboxylic acids and/or other glycol of adding as required) carry out ester interchange.

In addition, as required, also can in polyethylene terephthalate, contain known adjuvant.Wherein, in optical applications, owing to must be the transparency, so the addition of preferable additives is limited to Min..As known adjuvant, for example can enumerate lubricant, anti (blocking) agent, thermal stabilizer, antioxidant, antistatic agent, photostabilizer, resistance to impact modifying agent etc.As photostabilizer, also comprise ultraviolet light absorber, for example as the example of ultraviolet light absorber, can enumerate 2,2 '-di-2-ethylhexylphosphine oxide [4-(1,1,3,3-tetramethyl butyl)-6 phenol-(2H-benzotriazole-2-yl)], 2-(5-methyl-2-hydroxy phenyl)-2H-benzotriazole, 2-[2-hydroxyl-3,5-two (α, α-dimethyl benzyl) phenyl]-2H-benzotriazole, 2-(3,5-di-t-butyl-2-hydroxy phenyl)-2H-benzotriazole, 2-(3-tert-butyl group-5-methyl-2-hydroxy phenyl)-5-chlorine-2H-benzotriazole, 2-(3,5-di-t-butyl-2-hydroxy phenyl)-5-chlorine-2H-benzotriazole, 2-(3,5-two tertiary pentyl-2-hydroxy phenyls)-2H-benzotriazole, the benzotriazole of 2-(2 '-hydroxyl-5 '-uncle's octyl phenyl)-2H-benzotriazole and so on is a ultraviolet light absorber; 2-hydroxyl-4-methoxy benzophenone, 2-hydroxyl-4-octyl group oxygen benzophenone, 2,4-dihydroxy benaophenonel, 2-hydroxyl-4-methoxyl-4 '-chlorobenzophenone, 2,2 '-dihydroxy-4-methoxy benzophenone, 2,2 '-dihydroxy-4, the 2-dihydroxy benaophenonel of 4 '-dimethoxy-benzophenone and so on is a ultraviolet light absorber; The phenyl salicytate of p-t-butylphenyl salicylate, p-octylphenyl salicylate and so on is a ultraviolet light absorber etc., also can use as required they more than 2 kinds.Containing under the situation of ultraviolet light absorber, its amount is generally more than the 0.1 weight %, is preferably more than the 0.3 weight %, is preferably in addition below the 2 weight %.

The stretching pet film of Shi Yonging can be implemented stretch processing and make by aforesaid material resin is configured as film like in the present invention.By implementing such stretch processing, can improve the physical strength of pet film.The manufacture method of the pet film that has been stretched can be any means, be not particularly limited, can enumerate the described material resin of fusion, mechanical stretching has been extruded and has been the no oriented film of sheet under the temperature more than the glass temperature of polyethylene terephthalate, implements the method that heat fixation is handled then.Wherein, the stretch processing that polyethylene terephthalate is implemented can be any one of unilateral stretching, two-way stretch.

Temperature when stretching is preferably in 80～130 ℃ the scope, more preferably in 90～120 ℃ the scope so long as the above temperature of the glass temperature of polyethylene terephthalate then is not particularly limited.

In addition, the stretching ratio of the stretching pet film among the present invention vertically, laterally is preferably 1.1～6 times respectively film, more preferably 3～5.5 times.This be because, stretching ratio less than 1.1 times situation under, exist the stretching pet film not show the trend of the sufficient transparency.

In addition, the viewpoint of the distortion of the orientation main shaft from lower the stretching pet film (skew of tensile axis relatively), preferably before described stretching back, heat fixation are handled, horizontal (direction vertical with the direct of travel of film) of vertical (direct of travel of film), film carried out relaxation handle.The temperature that relaxation is handled is 90～200 ℃, is preferably 120～180 ℃.The relaxation amount is different and different according to horizontal stretching condition, but the percent thermal shrinkage of stretching pet film under 150 ℃ of preferably relaxation amount and temperature being set for after relaxation is handled becomes below 2%.

The temperature that heat fixation is handled is generally 180～250 ℃, is preferably 200～245 ℃.Heat fixation is handled at first carry out the heat fixation processing with fixed length after, for distortion, the raising thermotolerance equal strength that lowers the orientation main shaft, preferably further carries out the horizontal relaxation of film vertical (film direct of travel) or film and handles.Relaxation amount in this case preferably is adjusted to the percent thermal shrinkage of stretching pet film under 150 ℃ after the relaxation processing becomes 1～10%, more preferably becomes 2～5%.

One of feature of the stretching pet film of Shi Yonging is in the present invention, and the deviation angle of the relative draw direction of orientation main shaft (maximal value of the distortion of orientation main shaft) is 30 degree following (be preferably below 10 degree, more preferably 5 degree are following).If the maximal value of the distortion of orientation main shaft greater than 30 degree, can not obtain sufficient irregular colour and suppress effect in the time of then on fitting in the picture of liquid crystal indicator.In addition, the peaked lower limit of the distortion of the orientation main shaft of stretching pet film is not particularly limited, is preferably more than 0 degree.Wherein, can be by using the system of the (Da of phase-contrast film testing fixture RETS system mound electronics (strain) for example), the maximal value of the distortion of the orientation main shaft of the described stretching pet film of microwave transmission type molecular orientation meter (MOA) (prince's instrumentation machine (strain) system) mensuration.

The thickness d PET of the stretching pet film of Shi Yonging is preferably in the scope of 20～60 μ m in the present invention, more preferably in the scope of 30～50 μ m.Under the situation of the thickness d PET of stretching pet film less than 20 μ m, there is the trend that is difficult to operate (handling) (operability is poor), in addition, under thickness d PET surpasses the situation of 60 μ m, the trend that exists the advantage (merit) of thin-walled property to weaken.

In addition, the MOR of the stretching pet film of Shi Yonging (maximum orientation is than (Maximum Oriented Ratio)) value is preferably more than 1.5 in the present invention, more preferably more than 2.0, and then be preferably more than 2.2, be preferably more than 3.0 especially.This be because, be applicable under the situation of liquid crystal indicator in the polarization plates that will use MOR value less than 1.5 stretching pet film, exist oblique direction to interfere the big trend of uneven change.In addition, the higher limit of the MOR value of stretching pet film being not particularly limited, is to get final product below 7.At this, the MOR value is to utilize the ratio (maximum/minimum) of maximal value with the minimum value of the fixed transmission microwave intensity of transmission-type molecular orientation instrumentation, becomes anisotropic index.The MOR value can use microwave transmission type molecular orientation meter (prince's instrumentation machine (strain) system) to measure.

In addition, phase difference value R PET is preferably more than the 1000nm in the face of the stretching pet film of Shi Yonging in the present invention, more preferably more than the 3000nm.If then there is the eye-catching trend of positive face colouring in phase difference value R PET less than 1000nm in the face.In addition, phase difference value R PET is represented by following formula (1) in the face of stretching pet film.

R?PET＝(na—nb)×d?PET (1)

(in described formula (1), na is the refractive index of the interior slow axis direction of face of stretching pet film, nb is the refractive index of the interior heading direction of principal axis (with the direction of slow axis quadrature in the face) of face of stretching pet film, and dPET is the thickness of stretching pet film.)

Also give easy adhesive linkage on the PET series resin film that can in manufacture method of the present invention, use, formation method to the PET series resin film that is endowed this easy adhesive linkage is not particularly limited, for example can adopt the method that forms on the film after all stretching process finishes, the method that in the operation of stretching PET series resin, forms between promptly vertical stretching and the horizontal stretching, and the method that forms before bonding with polarized light film or after bonding etc.Wherein, from the regulation of throughput rate, the preferred employing after the PET series resin being indulged stretching forms the method for then carrying out horizontal stretching.

Easily adhesive linkage can be to the two sides of PET series resin, perhaps by bonding agent make its with the bonding one side that forms of polarized light film that constitutes by polyvinyl alcohol resin on give.

The composition that constitutes easy adhesive linkage is not particularly limited, and for example can enumerate the polyester based resin, the carbamate that have polar group, lower molecular weight, low Tg in skeleton is resin or acrylic resin etc.In addition, as required, also can contain crosslinking chemical, organic or inorganic filling agent, surfactant and lubricant etc.

The acryl resin that is formed in the acryl resin film that uses in described the 1st polarization plates and the 2nd polarization plates is meant the mixed methyl acryl resin and the adjuvant that adds as required etc. and carry out the material that melting mixing obtains.

Described methacrylic resin is the polymkeric substance based on methacrylate.Methacrylic resin can be the homopolymer of a kind of methacrylate, also can be the multipolymer of methacrylate and other methacrylates or acrylate etc.As methacrylate, can enumerate alkyl methacrylates such as methyl methacrylate, Jia Jibingxisuanyizhi, butyl methacrylate, the carbon number of this alkyl is generally about 1～4.In addition, as can with the acrylate of methacrylate copolymerization, preferred alkyl acrylate for example can be enumerated methyl acrylate, ethyl acrylate, butyl acrylate, acrylic acid 2-ethylhexyl etc., and the carbon number of this alkyl is generally about 1～8.The vinyl cyanide compound etc. that also can in multipolymer, contain in addition to these, the aromatic ethenyl compound of styrene as the compound that in molecule, has the two keys of 1 polymerism carbon-carbon at least and so on or vinyl cyanide and so on.

From the resistance to impact of film or the point of system film, acryl resin preferably contains the acrylic rubber particle.The amount of the acrylic rubber particle that can contain in acryl resin is preferably more than the 5 weight %, more preferably more than the 10 weight %.Though it is critical that the upper limit of the amount of acrylic rubber particle does not have, if but the amount of acrylic rubber particle is too much, then the skin hardness of film is low, and is implementing under the surface-treated situation to film, low to the solvent resistance of the organic solvent in the surface conditioning agent in addition.Thereby the amount of the acrylic rubber particle that can contain in acryl resin is preferably below the 80 weight %, more preferably below the 60 weight %.

Described acrylic rubber particle be with based on the elastomeric polymer of acrylate as particle that must composition, can be the single layer structure that in fact only constitutes by this elastomeric polymer, also can be with the sandwich construction of this elastomeric polymer as 1 layer.As this elastomeric polymer, particularly, the preferred cross-linking elasticity multipolymer that uses the polymerization that utilizes the monomer that can constitute with cross-linkable monomer 0.1～10 weight % of other ethene base system monomers 0～49.9 weight % of its copolymerization and copolymerization to obtain by alkyl acrylate 50～99.9 weight %, at least a kind.

As described alkyl acrylate, for example can enumerate methyl acrylate, ethyl acrylate, butyl acrylate, acrylic acid 2-ethylhexyl etc., the carbon number of this alkyl is generally about 1～8.In addition, as other ethene base system monomers that can close with described alkyl acrylate copolymer, can enumerate the compound that in molecule, has the two keys of 1 polymerism carbon-carbon at least, more specifically, can enumerate the vinyl cyanide compound etc. of the aromatic ethenyl compound, vinyl cyanide and so on of the methacrylate, styrene and so on of methyl methacrylate and so on.In addition, cross-linkable monomer as described copolymerization, can enumerate the compound of the bridging property that in molecule, has the two keys of 2 polymerism carbon-carbon at least, more specifically, can enumerate (methyl) acrylate of the polyvalent alcohol of ethylene glycol bisthioglycolate (methyl) acrylate or butylene glycol two (methyl) acrylate and so on, (methyl) acrylic acid alkenyl esters of (methyl) allyl acrylate or (methyl) acrylic acid methylallyl ester and so on, divinylbenzene etc.In addition, in this manual, (methyl) acrylate is meant methacrylate or acrylate, and (methyl) acrylic acid is meant methacrylic acid or acrylic acid.

As required, except described acrylic rubber particle, also can in acryl resin, contain common adjuvant for example ultraviolet light absorber, organic system dyestuff, pigment, inorganic be pigment, antioxidant, antistatic agent, surfactant etc.Wherein, preferably use ultraviolet light absorber in order to improve against weather.Example as ultraviolet light absorber, can enumerate 2,2 '-di-2-ethylhexylphosphine oxide [4-(1,1,3,3-tetramethyl butyl)-6 phenol-(2H-benzotriazole-2-yl)], 2-(5-methyl-2-hydroxy phenyl)-2H-benzotriazole, 2-[2-hydroxyl-3,5-two (α, α-dimethyl benzyl) phenyl]-2H-benzotriazole, 2-(3,5-di-t-butyl-2-hydroxy phenyl)-2H-benzotriazole, 2-(3-tert-butyl group-5-methyl-2-hydroxy phenyl)-5-chlorine-2H-benzotriazole, 2-(3,5-di-t-butyl-2-hydroxy phenyl)-5-chlorine-2H-benzotriazole, 2-(3,5-two tertiary pentyl-2-hydroxy phenyls)-2H-benzotriazole, the benzotriazole of 2-(2 '-hydroxyl-5 '-uncle's octyl phenyl)-2H-benzotriazole and so on is a ultraviolet light absorber; 2-hydroxyl-4-methoxy benzophenone, 2-hydroxyl-4-octyl group oxygen benzophenone, 2,4-dihydroxy benaophenonel, 2-hydroxyl-4-methoxyl-4 '-chlorobenzophenone, 2,2 '-dihydroxy-4-methoxy benzophenone, 2,2 '-dihydroxy-4, the 2-dihydroxy benaophenonel of 4 '-dimethoxy-benzophenone and so on is a ultraviolet light absorber; Phenyl salicytate to tert-butyl-phenyl salicylate, OPS p octylphenyl salicylate and so on is a ultraviolet light absorber etc., also can use as required they more than 2 kinds.Contain in acrylic resin under the situation of ultraviolet light absorber, its amount is generally more than the 0.1 weight %, is preferably more than the 0.3 weight %, is preferably in addition below the 2 weight %.

As the method for the acryl resin film that is used for obtaining using, can use known the whole bag of tricks usually such as the method for utilizing feed block, the method for utilizing the branch manifold head in the 1st and the 2nd polarization plates.Wherein, from obtaining the point of surface texture good film, for example preferably stacked by feed block, (die) carries out the multilayered molten extrusion molding from the T die head, the one side at least that makes the membranaceous thing of laminated thin that obtains and roller or band (belt) thus contact the method for making film.Especially from the surface smoothing that improves the acryl resin film and the viewpoint of surface smoothness, thereby preferably make the two sides of the membranaceous thing of laminated thin that described multilayered molten extrusion molding obtains contact the method for filming with roller surface or belt surface.In roller of Shi Yonging or the band, in order to give flatness to the acryl resin film surface, the roller surface that preferably contacts with acryl resin or the surface of belt surface become minute surface at this moment.

Also can be to giving turbidity (haze) at the 2nd acryl resin film.Method as giving turbidity is not particularly limited, and for example can use the method for mixing inorganic particles or organic fine particles in described material resin (acryl resin); On the surface of the opposition side of the face that is pasting with the 1st polarized light film in the 1st acryl resin film, be coated in method that is mixed with the coating liquid that inorganic particles or organic fine particles form in the resin binder (binder) etc.As inorganic particles, can enumerate representative silicon dioxide, cataloid, aluminium oxide, alumina sol, alumina silicate, aluminium oxide-silica composite oxide, porcelain earth, talcum, mica, lime carbonate, calcium phosphate etc.In addition, as organic fine particles, can use resin particles such as crosslinked polypropylene acid particles, crosslinked polystyrene particle, crosslinked polymethylmethacrylaparticles particle, silicone resin particle, polyimide particle.

On the surface of the opposition side of the face that is pasting with the 1st polarized light film in the 2nd acryl resin film, except described non-glare treated (turbidity is given processing), also can implement to be coated with firmly surface treatments such as processing, electrostatic prevention processing.In addition, also can form the overlay that constitutes by liquid crystal compounds or its high-molecular weight compounds etc.

The thickness of the 1st and the 2nd acryl resin film is preferably about 20～120 μ m, more preferably about 30～80 μ m.If then there is unworkable trend in the thickness of film less than 20 μ m, if the trend that thickness above 120 μ m, then exists the advantage (merit) of thin-walled property to weaken.

In the 1st polarization plates, can also be on the face of the opposition side of the face of described the 1st transparent protective film of being fitted with of the 1st polarized light film, the bonding agent of liquid crystal cells and polarization plates or the layer of bonding agent are formed for fitting.In addition, also can be on the face of the opposition side of the face of described the 1st transparent protective film of being fitted with of the 1st polarized light film, for example stacked transparent membrane as protective film or optical compensating film etc. forms the layer of bonding agent or bonding agent on this transparent membrane.As transparent membrane, can enumerate triacetylcellulose film cellophanes such as (TAC films), alkene film, acrylate film, mylar etc.And then, also can fold optically functional film described later on described transparent membrane upper strata, on this optically functional film, form the layer of bonding agent or bonding agent.

Described cellophane is by cellulosic partial esterification thing or the complete film that constitutes of carboxylate, for example can enumerate the film that is made of cellulosic acetic acid esters, propionic ester, butyric ester, their mixed ester etc.More specifically, can enumerate triacetylcellulose film, diacetyl cellulose film, cellulose-acetate propionate film, cellulose acetate-butyrate film etc.As such cellulose esters is film, can enumerate suitable commercially available product, for example FujitachTD80 (Fujiphoto (strain) system), FujitachTD80UF (Fujiphoto (strain) system), FujitachTD80UZ (Fujiphoto (strain) system), KC8UX2M (Konica Minolta Opto (strain) system), KC8UY (Konica MinoltaOpto (strain) system) etc.

In addition, as the optical compensating film that constitutes by cellophane, for example can enumerate in cellophane, to contain and have that phase differential is adjusted the film of the compound of function, coating has phase differential and adjusts film that film, unilateral stretching or the two-way stretch cellophane of the compound of function obtain etc. on the cellophane surface.In addition, as commercially available cellulosic optical compensating film, for example can enumerate " KC4FR-1 " that " WV BZ438 " that Fujiphoto (strain) sells with " WV film " (Wide View Film) series reach " WV EA ", Konica Minolta Opto (strain) sale and reach " KC4HR-1 " etc.

As the described optical compensating film that constitutes by the alkene film, for example can enumerate the cyclic olefin resins film is carried out the optical compensating film that unilateral stretching or two-way stretch obtain.Polarization plates group of the present invention is being used for large-scale liquid crystal display television by using liquid crystal panel, especially possessing under the situation of liquid crystal panel of liquid crystal cells of vertical orientated (VA) pattern (mode), point from optical characteristics, permanance, as described optical compensating film, the stretching product of also preferred cyclic olefin resins film.At this, the cyclic olefin resins film is for for example by norborene or have a film that the thermoplastic resin of the monomeric unit that many ring norborneol alkene monomers etc. are made of cyclic olefin (cycloolefin) constitutes.The cycloolefin film can be the hydrogenation thing of the ring-opening polymerization polymer that uses single cycloolefin or the ring opening copolymer thing that uses cycloolefin more than 2 kinds, also can and/or have the addition copolymer of the aromatics etc. of vinyl for cycloolefin and chain alkene.In addition, chain linked to owner or side chain importing polar group also is effective.

Using cycloolefin and chain alkene and/or having under the situation of multipolymer of aromatics of vinyl, example as chain alkene, can enumerate ethene or propylene etc., in addition, as the example of aromatics, can enumerate styrene, α-methyl styrene, cycloalkyl substituted styrene etc. with vinyl.In such multipolymer, the monomeric unit that is made of cycloolefin can be 50 moles below the %, for example about 15～50 moles of %.Especially becoming under the situation of terpolymer of cycloolefin and chain alkene and the aromatics with vinyl, the monomeric unit that is made of cycloolefin can be less amount as described above.In this terpolymer, the monomeric unit that is made of chain alkene is generally about 5～80 moles of %, and the monomeric unit that is made of the aromatics with vinyl is generally about 5～80 moles of %.

As commercially available thermoplasticity cyclic olefin resins, comprise that " Topas " that the Ticona company of Germany sells, " Arton " that JSR (strain) sells, " ZEONOR " that Japanese ZEON (strain) sells reach " Apel " (being trade name) of " ZEONEX ", Mitsui Chemicals (strain) sale etc., can suitably be applicable to them described cyclic olefin resins film.Can be to such cyclic olefin resins system film, thus the cyclic olefin resins film obtained.As film-forming method, can suitably use known method such as solvent casting method, extrusion by melting.In addition, for example ponding chemical industry (strain) " the Ace west that (エ ス シ-Na) " of selling reach cyclic olefine resin film that " the ZEONOR film " that " SCA40 ", (strain) Ao Pudaisi (オ プ テ ス) sell, " Arton film " (being trade name) that JSR (strain) sells etc. have been made film also by commercially available, also can suitably use them.

Cyclic olefin resins film as optical compensating film preferably stretches to a direction at least.Like this, can give suitable optical compensation function, help the visual angle of liquid crystal indicator to enlarge.Phase difference value R in the face of the cyclic olefin resins film that has been stretched ₀Be preferably 40nm above, below the 100nm, more preferably 40nm above, below the 80nm.If phase difference value R in the face ₀Less than 40nm or above 100nm, then there is the low trend of viewing angle compensation energy of relative liquid crystal panel.The thickness direction phase difference value R of the cyclic olefin resins film that has been stretched in addition, _ThBe preferably 80nm above, below the 250nm, more preferably 100nm above, below the 250nm.If thickness direction phase difference value R _ThLess than 80nm or surpass 250nm, then with the viewing angle compensation of the relative liquid crystal panel of above-mentioned same existence can be low trend.Phase difference value R in the face of the cyclic olefine resin film that has been stretched in addition, ₀And thickness direction phase difference value R _ThRespectively by following formula (1) and (2) expression.

R ₀＝(n _x—n _y)×d (1)

R _th＝[(n _x+n _y)/2—n _z]×d (2)

At this, n _xBe the refractive index of slow axis direction in the face of the cyclic olefine resin film that has been stretched, n _yBe the refractive index of heading direction of principal axis in the face (with the direction of slow axis direction quadrature in the face), n _zBe the refractive index of the thickness direction of the cyclic olefine resin film that has been stretched, d is the thickness of the cyclic olefine resin film that has been stretched.

Aforesaid preferred index characteristic, except can be by suitably adjusting stretching ratio and the draw speed, can also be by suitably selecting and give all temps (comprising temperature graph) such as preheat temperature when stretching, draft temperature, heat setting (heat set) (distortion of the film after the stretching alleviates processing) temperature, chilling temperature.By under the condition that relaxes, stretching, can obtain aforesaid preferred index characteristic, for example stretching ratio is preferably the scope more than 1.05 times, below 1.6 times, so more preferably more than 1.1 times, below 1.5 times.Under the situation of two-way stretch, as long as make the stretching ratio of maximum tension direction become described scope.

If the thickness d of the cyclic olefine resin film that has been stretched is blocked up, workability deteriorates then takes place easily, in addition, transparency weight low or polarization plates becomes problem such as big.The thickness d of the cyclic olefine resin film that therefore, has been stretched is preferably about 40 μ m～80 μ m.

Also can on transparent membrane stacked on the face of the opposition side of the face that is fitted with the 1st acrylic resin film on the 1st acrylic resin film and/or in the 1st polarized light film, paste optically functional film by bonding agent as protective film or optical compensating film.As optically functional film, except the optical compensating film as base material with described cellulose-based film or cyclic olefine film, for example can also enumerate at substrate surface coated with liquid crystal compound and make the optical compensating film of its orientation, see through certain polarized light and reflection and demonstrate reflective polarizing optical thin film with the polarized light of its opposite nature, the phase-contrast film that constitutes by polycarbonate-based resin, the film that has concaveconvex shape on the surface with anti-dazzle function, the film that surface band antireflection is handled, the reflective film that has reflection function on the surface has reflection function concurrently and sees through the semi-penetration film etc. of function.As being equivalent at substrate surface coated with liquid crystal compound and making the commercially available product of the optical compensating film of its orientation, can enumerate " WV film " that Fujiphoto (strain) sells, " NH film " that Nippon Oil(Nippon Mitsubishi Oil) (strain) is sold and reach " NR film " (being trade name) etc.Demonstrate commercially available product with the reflective polarizing optical thin film of the polarized light of its opposite nature as being equivalent to see through certain polarized light and reflection, for example can enumerate " DBEF " (being trade name) that 3M Company (3M company) (can obtain from Sumitomo 3M (strain) in Japan) sells etc.

Then, describe to stacked the 1st acrylic resin film on the 1st polarized light film and/or as the method for the transparent membrane of above-mentioned protective film or optical compensating film etc.As the method for stacked these the 1st acrylic resin films and/or transparent membrane on the 1st polarized light film surface, the bonding agent that is to use that adopts carries out bonding method usually.Use under the situation of bonding agent on two sides at the 1st polarized light film, can use two sides bonding agent of the same race, also can use bonding agent not of the same race.

As bonding agent, from the viewpoint of attenuate bond layer, can enumerate the bonding agent of water system, be about to the bonding agent composition and in water, be dissolved or dispersed in the bonding agent that forms in the water.For example, as preferred bonding agent, can enumerate polyvinyl alcohol resin or carbamate resins composition as principal ingredient.

Under with the situation of polyvinyl alcohol resin as the principal ingredient of bonding agent; this polyvinyl alcohol resin is except can be for partly-hydrolysed polyvinyl alcohol (PVA) or the fully saponified polyvinyl alcohol (PVA), the polyvinyl alcohol resin that can also be modified for carboxy-modified polyvinyl alcohol (PVA), acetoacetyl modified polyvinylalcohol, methylol modified polyvinylalcohol, amino modified polyvinyl alcohol (PVA) etc.Using under the situation of polyvinyl alcohol resin as the bonding agent composition, this bonding agent is formulated into the aqueous solution of polyvinyl alcohol resin mostly.Relative 100 weight parts waters of the concentration of the polyvinyl alcohol resin in the bonding agent are generally about 1～10 weight portion, are preferably 1～5 weight portion.

In order to improve cementability, preferably in containing the bonding agent of polyvinyl alcohol resin as principal ingredient, add glyoxal, curable composition or crosslinking chemical such as water-soluble epoxy resin.As water-soluble epoxy resin, for example can enumerate the polyamide polyamine epoxy resin that obtains as described below, that is: make the dicarboxylic acid reaction of the polyalkylene polyamine of diethylene triamine, trien and so on and hexane diacid and so on obtain the polyamide polyamine, chloropropylene oxide and its reaction are obtained.As the commercially available product of this type of polyamide polyamine epoxy resin, comprise that " the Sumirez Resin 650 " that firmly change CHEMTEX (strain) sale reaches " WS-525 " of " Sumirez Resin 675 ", Japanese PMC (strain) sale etc., can suitably use them.Relative polyvinyl alcohol resin 100 weight portions of the addition of these curable compositions or crosslinking chemical are generally 1～100 weight portion, are preferably 1～50 weight portion.If its addition is few, then the raising effect of cementability diminishes, if opposite its addition is many, and the trend that then exists bond layer to become fragile.

Using under the situation of carbamate resins as the principal ingredient of bonding agent, as the example of suitable adhesive composite, can enumerate polyester is ionomer type carbamate resins and the potpourri with compound of glycidyl oxygen base (glycidyloxy).Polyester described herein is that ionomer type carbamate resins is to import the product that a spot of ionic composition (hydrophilic component) forms in the carbamate resins with polyester backbone.This type of ionomer type carbamate resins since do not use emulsifying agent and directly in water emulsification become emulsion (emulsion), so be suitable as the bonding agent of water system.Polyester ionomer type carbamate resins himself is known.For example open and put down in writing in flat 7-No. 97504 communiques that to be used for phenol be the example of resin dispersion in the macromolecule dispersing agent of aqueous medium the spy, in addition, open 2005-No. 070140 communique and spy the spy and open the potpourri that illustrated in 2005-No. 181817 communiques polyester ionomer type carbamate resins and compound as bonding agent, the mode of adapter ring olefin resin film on the polarized light film that constitutes by polyvinyl alcohol resin with glycidyl oxygen base (glycidyloxy).

As bonding agent, also can use Photocurable adhesive agent.As Photocurable adhesive agent, for example can enumerate the potpourri of photo-curable epoxy resin and light cationic polymerization initiators etc. etc.As photo-curable epoxy resin, for example can enumerate alicyclic epoxy resin, not have the epoxy resin of ester ring type structure and their potpourri etc.In addition, as Photocurable adhesive agent, can also use in epoxy resin, acryl resin, oxetanes (オ キ セ Application) resin, carbamate resins, polyvinyl alcohol resin etc. to add the Photocurable adhesive agent that radical polymerization mould assembly initiating agent and/or cationic polymerization type initiating agent form.

As the method for using bonding agent applying transparent protective film and/or transparent membrane on the 1st polarized light film surface; can use over known method; for example can enumerate and utilize The tape casting; wire bar coating (wire bar coat) method; intaglio coating (gravure coat) method; comma coating (カ Application マ コ--) method; drawout application (doctor blade) method; metal mold coating (diecoat) method; dip-coating (dip coat) method; spray-on process etc.; coating adhesive at the 1st polarized light film and/or on the bonding plane of the film of fitting thereon, thus overlap the two method.The tape casting is to make film as applied thing to approximate vertical direction, general horizontal direction, the oblique direction between the two moves in addition, and wanders bonding agent on its surface simultaneously and make the method for bonding agent expansion.

Utilize aforesaid method coating adhesive, utilize the film of niproll clamping the 1st polarized light films such as (niproll) and applying thereon to make its their applying then, thereby engage the two.In addition, also can suitably use at the 1st polarized light film and the bonding agent that instils between the film of fitting thereon, thus the method for utilizing this duplexer of pressurization such as roller to expand equably then.In this case, can use the material as roller such as metal or rubber.And then the also preferred bonding agent that instils between the film of the 1st polarized light film and applying thereon that adopts makes this duplexer by also pressurization between roller and the roller then, thus the method for expansion.In this case, these rollers can be identical material, also can be unlike material.

In addition, the described niproll of use before dry or curing etc. is preferably below the 5 μ m its thickness of fitting bond layer afterwards, also is preferably more than the 0.01 μ m.

In addition, in order to improve cementability, also can suitably implement surface treatments such as plasma treatment, corona treatment, ultraviolet treatment with irradiation, flame (flame) processing, saponification processing thereon at the gluing of surfaces of the 1st polarized light film and/or the film of fitting.Handle as saponification, can enumerate the method for the aqueous solution of the alkali that impregnated in NaOH or potassium hydroxide and so on.

Engage the duplexer that forms by described water system bonding agent and implement dried usually, carry out drying, the curing of bond layer.Dried for example can be undertaken by spraying hot blast.Baking temperature can suitably be selected from about 40～100 ℃, preferred 60～100 ℃ scope, and for example be about 20～1,200 seconds drying time.The thickness of dried bond layer is generally about 0.001～5 μ m, is preferably more than the 0.01 μ m, also is preferably in addition below the 2 μ m, and then is preferably below the 1 μ m.If it is excessive that the thickness of bond layer becomes, then become the bad order of polarization plates easily.

After the dried, also can be carried out up to not a half day, common maintenance more than 1 day under the temperature more than the room temperature, thereby obtain sufficient adhesion strength.This type of maintenance is typically carried out under the state that is wound into the roller shape.Preferred curing temperature is 30～50 ℃ a scope, so be preferably more than 35 ℃, below 45 ℃.If curing temperature surpasses 50 ℃, then under the state that roller is reeled, become take place easily so-called " flanging (

I Parties ま り) ".In addition, the humidity during to maintenance is not particularly limited, and is preferably selected to the scope about relative humidity 0%RH～70%RH.Curing time is generally 1～about 10 days, is preferably 2～about 7 days.

On the other hand, use the light-cured type bonding agent engage polarized light film and with the situation of the film of its applying under, by irradiation activation evergy line behind joint Photocurable adhesive agent is solidified.Light source to the activation evergy line, be not particularly limited, the activation evergy line that preferably below wavelength 400nm, has luminescence distribution, particularly, preferred lower pressure mercury vapor lamp, middle medium pressure mercury lamp, high-pressure mercury-vapor lamp, extra-high-pressure mercury vapour lamp, chemical lamp (chemical lamp), black lamp (black light lamp), microwave-excitation mercury vapor lamp, metal halide lamp (metal halide lamp) etc.Suitably determine to be not particularly limited rayed intensity to Photocurable adhesive agent according to the composition of this Photocurable adhesive agent, effectively the exposure intensity of wavelength region may is preferably 0.1～6000mW/cm in the activation of polymerization initiator ²This exposure intensity is 0.1mW/cm ²Under the above situation, the reaction time can not become long, is being 6000mW/cm ²Under the following situation, the heating during from the curing of the heat of radiation of light source and Photocurable adhesive agent causes that the possibility of deterioration of the xanthochromia of initial ring epoxy resins or polarized light film is few.Be subjected to each Photocurable adhesive agent that will solidify control to the rayed time of Photocurable adhesive agent, be not particularly limited, preferably will become 10～10000mJ/m with the accumulative total light quantity setting of the product representation of irradiation time with described exposure intensity ²Making the accumulative total light quantity to Photocurable adhesive agent is 10mJ/m ²Under the above situation, can produce the spike in q.s polymerization initiator source, thereby curing reaction is carried out more reliably, in addition, be 10000mJ/m ²Under the following situation, it is long that irradiation time can not become, and can keep good throughput rate.In addition, the thickness of the postradiation bond layer of activation evergy line is generally about 0.001～5 μ m, is preferably more than the 0.01 μ m, is preferably in addition below the 2 μ m, and then is preferably below the 1 μ m.

Make in the irradiation that utilizes the activation evergy line under the situation of Photocurable adhesive agent curing; preferably, be cured under the condition that the various functions of the polarization plates such as the transparency of transparent membranes such as transmitance and form and aspect and the 1st acrylic resin film and optical compensating film, protective film do not reduce at the degree of polarization of the 1st polarized light film.

(the 2nd polarization plates)

The 2nd polarization plates is used as front face side (identification side) polarization plates of liquid crystal panel, can be on the one side of the 2nd polarized light film that constitutes by polyvinyl alcohol resin the stacked turbidity value anti-dazzle property film that is in the scope more than 0.1%, below 45% make.Particularly, the 2nd polarized light film is the polarized light film that absorption orientation dichromatism pigment forms in the polyvinyl alcohol resin film after unilateral stretching, can similarly use the polarized light film to the explanation of the 1st polarized light film.The 1st polarized light film and the 2nd polarized light film are identical or different at aspects such as profile (thickness etc.), material and manufacture methods.

Described anti-dazzle property film can by with the acrylic resin film as base material, the stacked in its surface hard conating with fine concaveconvex shape is made.The acrylic resin film that becomes base material can similarly use the acrylic resin film that illustrates in described acrylic resin film.The acrylic resin film that uses in the 1st polarization plates and the 2nd polarization plates is identical or different at aspects such as profile (thickness etc.), material, composition and manufacture methods.By using this type of acrylic resin film, can further improve the physical strength of liquid crystal panel, the further thin-walled property of the liquid crystal panel that can also realize simultaneously as base material.

The turbidity value of anti-dazzle property film is in the scope more than 0.1%, below 45%.Turbidity value be 0.1% in fact with the hard conating synonym of transparent (clear).If turbidity value is higher than 45%, then picture fade so that identification low.The turbidity value of anti-dazzle property film can be less than 5%, but from lowering the viewpoint that mirrors of fluorescent light, is preferably more than 5%.At this, turbidity value can utilize according to the method for JIS K7136 and measure.

The thickness of acryl resin film is preferably about 20～120 μ m, more preferably about 30～80 μ m.If then there is unworkable trend in the thickness of film less than 20 μ m, if the trend that thickness above 120 μ m, then exists the advantage of thin-walled property to weaken.

Hard conating with described fine concave-convex surface shape can utilize at the 2nd acryl resin film surface and form the method for filming that contains organic fine particles or inorganic particles; or the method (for example embossing (emboss) method etc.) of pushing the roller of giving concaveconvex shape after formation contains organic fine particles or inorganic particles or do not contain the filming of organic fine particles or inorganic particles waits and makes, but is not limited to these.As forming described method of filming, for example can be illustrated in the method etc. that the coating of acryl resin film surface contains the coating fluid of the adhesive ingredients that is made of hardening resin composition and organic fine particles or inorganic particles.

As inorganic particles, can use representative silicon dioxide, cataloid, aluminium oxide, alumina sol, alumina silicate, aluminium oxide-silica composite oxide, porcelain earth, talcum, mica, lime carbonate, calcium phosphate etc.In addition, as organic fine particles, can use resin particles such as crosslinked polypropylene acid particles, methyl methacrylate/styrene copolymer resin particle, crosslinked polystyrene particle, crosslinked polymethylmethacrylaparticles particle, silicone resin particle, polyimide particle.

Be used for disperseing the adhesive ingredients of inorganic particles or organic fine particles preferably selected from the material that becomes high rigidity (being coated with firmly).As adhesive ingredients, can use uv curing resin, heat-curing resin, electron ray curing resin.As uv curing resin, can use commercially available uv curing resin.For example can with polyfunctional acrylic esters such as trimethylolpropane triacrylate, tetramethylol methane tetraacrylate separately or more than 2 kinds with the potpourri of " Irgacure 907 ", " Irgacure184 " (above is the different chemicals corporate system of vapour Bart), " Lucirin TPO " Photoepolymerizationinitiater initiaters such as (BASF AG's systems) as uv curing resin.For example under the situation of using uv curing resin; in uv curing resin, disperse after inorganic particles or the organic fine particles; this resin combination of coating on the acryl resin film; and irradiation ultraviolet radiation, thereby can be formed on the middle hard conating that disperses inorganic particles or organic fine particles to form of resinizing firmly that constitutes by adhesive resin.

Example as uv curing resin, particularly, can enumerate the potpourri that constitutes by urethane acrylate, polyvalent alcohol (methyl) acrylate, (methyl) acrylate copolymer that contains 2 above hydroxyls and Photoepolymerizationinitiater initiater with alkyl.

Preferred (methyl) acrylic acid and/or (methyl) acrylate, polyvalent alcohol and the diisocyanate of using prepared described urethane acrylate.(methyl) crylic acid hydroxy ester that for example can have 1 hydroxyl from (methyl) acrylic acid and/or (methyl) acrylate and polyvalent alcohol preparation at least makes itself and di-isocyanate reaction, makes urethane acrylate thus.These (methyl) acrylic acid and/or (methyl) acrylate, polyvalent alcohol and diisocyanate can use a kind respectively, or are used in combination respectively more than 2 kinds.In addition, also can add various adjuvants as required.

As described (methyl) acrylate, for example can enumerate (methyl) alkyl acrylates such as (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) propyl acrylate, (methyl) isopropyl acrylate, (methyl) butyl acrylate; (methyl) acrylic acid cycloalkyl esters such as (methyl) cyclohexyl acrylate.

Described polyvalent alcohol is the compound that has 2 hydroxyls at least, for example can enumerate ethylene glycol, 1,3-propylene glycol, 1,2-propylene glycol, diglycol, dipropylene glycol, neopentyl glycol, 1,3-butylene glycol, 1,4-butylene glycol, 1,6-hexanediol, 1,9-nonanediol, 1,10-decanediol, 2,2,4-trimethyl-1,3-pentanediol, 3-methyl-1,5-pentanediol, the hydroxy new pentane acid DOPCP, the cyclohexane dihydroxymethyl, 1,4-cyclohexane diol, the spiroglycol (spiroglycol), the tristane methylol, the hydrogenation bisphenol-A, oxirane addition bisphenol-A, epoxypropane addition bisphenol-A, trimethylolethane, three dihydroxy methylpropanes, glycerine, 3-methylpentane-1,3,5-triol, pentaerythrite, dipentaerythritol, tripentaerythritol, the grape carbohydrate.

As described diisocyanate, for example can use aromatic series, aliphatics or alicyclic various diisocyanates.As concrete example, can enumerate tetramethylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, 2,4-benzal diisocyanate, 4,4-diphenyl diisocyanate, 1,5-naphthalene diisocyanate, 3,3-dimethyl-4,4-diphenyl diisocyanate, Xylene Diisocyanate, trimethyl hexamethylene diisocyanate, 4,4-methyl diphenylene diisocyanate and their hydrogenation thing etc.

Concrete example as described polyvalent alcohol (methyl) acrylate, can enumerate pentaerythrite two (methyl) acrylate, pentaerythrite three (methyl) acrylate, pentaerythrite four (methyl) acrylate, dipentaerythritol six (methyl) acrylate, 1,6-hexanediol (methyl) acrylate.These compositions may be used alone, can also be used in combination.And then, also can add various adjuvants as required.Polyvalent alcohol (methyl) acrylate preferably includes pentaerythritol triacrylate and tetramethylol methane tetraacrylate.They can be multipolymer, also can be potpourri.

As described (methyl) acrylate copolymer that contains 2 above hydroxyls with alkyl, for example can enumerate and have 2, (methyl) acrylate copolymer of 3-dihydroxypropyl, or have (methyl) acrylate copolymer of 2-hydroxyethyl and 2,3-dihydroxypropyl.

As Photoepolymerizationinitiater initiater, can enumerate 2,2-dimethoxy-2-phenyl acetophenone, acetophenone, benzophenone, xanthene, 3-methyl acetophenone, 4-chlorobenzophenone, 4,4 '-dimethoxy-benzophenone, benzoin propyl ether, benzyl dimethyl ketal, N, N, N ', N '-tetramethyl-4,4 '-diaminobenzophenone, 1-(4-isopropyl phenyl)-2-hydroxyl-2-methylpropane-1-ketone, other thioxanthones based compounds.

As required, in described potpourri, add solvent.As solvent, be not particularly limited, for example can enumerate ethyl acetate, butyl acetate and their mixed solvent.

In addition, described potpourri can contain levelling agent, for example can enumerate the levelling agent of fluorine system or silicone-based.As the levelling agent of silicone-based, can enumerate reactive silicone, dimethyl silicone polymer, polyether-modified dimethyl silicone polymer, poly-methyl alkyl siloxane.Preferred reactive silicone and siloxane-based levelling agent.By using the levelling agent of reactive silicone, can give sliding to hard coating surface, can continue outstanding mar resistance for a long time.In addition, if use siloxane-based levelling agent, then can improve the film formability.

As the levelling agent of reactive silicone, for example can enumerate reactive silicone with siloxane bond and acrylate-based and hydroxyl.As concrete example, can enumerate

(a) (dimethyl siloxane): (3-acryloyl group-2-hydroxyl propoxyl group propyl-siloxane): the multipolymer of (2-acryloyl group-3-hydroxyl propoxyl group propyl-siloxane)=0.8:0.16:0.04 (mol ratio),

(b) (dimethyl siloxane): (hydroxypropyl siloxane): (6-isocyanates hexyl cyamelide): the multipolymer of (aliphatic polyester)=6.3:1.0:2.2:1.0 (mol ratio),

(c) (dimethyl siloxane): (end is the methyl polyglycol propyl ether siloxane of acrylate): the multipolymer of (end is the methyl polyglycol propyl ether siloxane of hydroxyl)=0.88:0.07:0.05 (mol ratio) etc.

More than, can be improved and acryl resin adhesion of thin film and the further simultaneously anti-dazzle property film that can more effectively prevent surface damage that improves physical strength by using the adhesive ingredients (adhesive resin) of the acrylic that as the example shows.

Under the situation of the hard conating that is utilizing the embossing method to form to have fine concave-convex surface shape, as long as use the mould that is formed with the micro concavo-convex shape, with the shape transferred thereon of mould on the hard conating that forms on the acrylic resin film, getting final product.Preferably utilize embossing to carry out the transfer printing of the mold shape on hard conating.As embossing, preferably use the UV embossing method of uv curing resin.Wherein, utilizing the embossing method to form under the situation of fine concave-convex surface shape, hard conating can contain inorganic or organic fine particles, also can not contain.

In UV embossing method, by forming the uv curing resin layer on the surface of acryl resin film, this uv curing resin layer limit is pushed to the male and fomale(M﹠F) of mould in the limit solidifies it, and the male and fomale(M﹠F) of mould is transferred on the uv curing resin layer.Particularly, on the acryl resin film, apply uv curing resin, be attached at the uv curing resin that makes coating under the state of male and fomale(M﹠F) of mould, from acryl resin film side irradiation ultraviolet radiation, uv curing resin is solidified, then, peel off the acryl resin film that is formed with the uv curing resin layer after the curing from mould, thus with the shape transferred thereon of mould to uv curing resin.Kind to uv curing resin is not particularly limited, and for example can use above-mentioned uv curing resin.In addition, also can replace uv curing resin, by suitably selecting light trigger, use can utilize wavelength to be longer than the visible-light curing resin that ultraviolet visible light is cured.

Thickness to hard conating is not particularly limited, be preferably 2 μ m above, below the 30 μ m, more preferably 3 μ m above, below the 30 μ m.If the thickness of hard conating is less than 2 μ m, then can not obtain sufficient hardness, have the trend of the surperficial easy damaged that becomes, in addition, if be thicker than 30 μ m, then exist and break easily or the cure shrinkage of hard conating causes anti-dazzle property film curl (curl) and then the low trend of throughput rate.

As mentioned above, anti-dazzle property film preferably utilizes hard conating to give turbidity, but also can be with the formation of hard conating, by disperseing inorganic in as the acryl resin film of base material or organic fine particles is given turbidity.In addition, as anti-dazzle property film, can use the acryl resin film that does not have hard conating and be dispersed with inorganic or organic fine particles.Under these situations,, can use described inorganic or organic fine particles as inorganic or organic fine particles.In addition, be dispersed with the thickness and above-mentioned similarly being preferably about 20～120 μ m of the acryl resin film of inorganic or organic fine particles, more preferably about 30～80 μ m.

(on the acrylic resin film or on the hard conating) implements surface treatments such as electrostatic prevention processing on the surface of the opposition side of the face that is pasting with the 2nd polarized light film that also can be in anti-dazzle property film.In addition, also can form the overlay that constitutes by liquid crystal compounds or its high-molecular weight compounds etc.

In the 2nd polarization plates, on the face of also can be in the 2nd polarized light film and the opposition side film adhered face of described anti-dazzle property, the bonding agent of liquid crystal cells and polarization plates or the layer of bonding agent are formed for fitting.In addition, stacked on the face of also can be in the 2nd polarized light film and the opposition side film adhered face of described anti-dazzle property for example as the transparent membrane of protective film or optical compensating film etc., on this transparent membrane, form the layer of bonding agent or bonding agent.As transparent membrane, can enumerate triacetylcellulose film cellophanes such as (TAC films), alkene film, acrylate film, mylar etc.And then, also can be on described transparent membrane stacked optically functional film, on this optically functional film, form the layer of bonding agent or bonding agent.As protective film, optical compensating film and optically functional film, can similarly use protective film, optical compensating film and the optically functional film in the 1st polarization plates, recorded and narrated.

For stacked anti-dazzle property film on the 2nd polarized light film and/or as for the method for the transparent membrane of protective film or optical compensating film etc., can similarly adopt the method for in the 1st polarization plates, recording and narrating.Using under the situation of bonding agent on the two sides of the 2nd polarized light film, can use two sides bonding agent of the same race, also can use bonding agent not of the same race in addition.In addition, the bonding agent that uses in the making of the 1st polarization plates is identical or different with the bonding agent that uses in the making of the 2nd polarization plates.

＜liquid crystal panel and liquid crystal indicator 〉

Liquid crystal panel of the present invention particularly, disposes described the 1st polarization plates, liquid crystal cells and described the 2nd polarization plates successively and forms for using the liquid crystal panel of described polarization plates group.At this, the face of opposition side that the 1st polarization plates is configured to the face that is laminated with the 1st acryl resin film in the 1st polarized light film is relative with liquid crystal cells, and the face of opposition side that the 2nd polarization plates is configured to the face that is laminated with anti-dazzle property film in the 2nd polarized light film is relative with liquid crystal cells.Promptly; with the face of the opposition side of the face that is laminated with the 1st acryl resin film in the 1st polarized light film as bonding plane; use bonding agent or bonding agent; the 1st polarization plates is attached on the liquid crystal cells; perhaps on the face by the opposition side of the face that is laminated with the 1st acryl resin film in the 1st polarized light film stacked as protective film or optical compensating film etc. transparent membrane or and then stacked thereon optically functional film, the 1st polarization plates is attached on the liquid crystal cells.Equally; with the face of the opposition side of the face that is laminated with anti-dazzle property film in the 2nd polarized light film as bonding plane; use bonding agent or bonding agent; the 2nd polarization plates is attached on the liquid crystal cells; perhaps; by stacked transparent membrane or further stacked thereon optically functional film on the face of the opposition side of the face that is laminated with anti-dazzle property film in the 2nd polarized light film, the 2nd polarization plates is attached on the liquid crystal cells as protective film or optical compensating film etc.

As liquid crystal cells, can adopt over known formation, for example can use (TN) liquid crystal cells of variety of way such as pattern, vertical orientated (VA) pattern of twisted-nematic (Twisted Nematic).

The liquid crystal panel that uses this type of polarization plates group of the present invention is because with the protective film of transparent protective film as the 1st polarization plates; to be that the anti-dazzle property film of base material is as the protective film of the 2nd polarization plates, so can realize the preventing of the raising of physical strength and thin-walled property, surperficial damaged, the raising of identification and then preventing of warpage with the acryl resin film.

Fig. 1 is the summary sectional view of an example of the basic layer structure of expression liquid crystal indicator of the present invention.Liquid crystal indicator shown in Figure 1 dispose successively backlight 10, light diffusing sheet 50 and by liquid crystal cells 40 and be attached on the one side of liquid crystal cells 40 as the 1st polarization plates 20 of rear side polarization plates and be attached at the liquid crystal panel that the 2nd polarization plates 30 as the front face side polarization plates on the another side of liquid crystal cells 40 constitutes and form.The 1st polarization plates 20 has the structure of utilizing optical compensating film 23 and the 1st acrylic resin film 25 clampings the 1st polarized light film 21, and it is relative with liquid crystal cells 40 to be configured to optical compensating film 23.In addition, the 2nd polarization plates 30 has the structure of utilizing optical compensating film 33 and anti-dazzle property film 34 clampings the 2nd polarized light film 31, and it is relative with liquid crystal cells 40 to be configured to optical compensating film 33.In this embodiment, anti-dazzle property film 34 is made of the hard conating 36 that has the micro concavo-convex shape thereon on the 2nd acryl resin film 35 and the stacked surface.In liquid crystal indicator of the present invention shown in Figure 1, liquid crystal panel is configured to the 1st polarization plates 20 as the rear side polarization plates to be become the backlight side promptly the 1st acryl resin film 25 is relative with light diffusing sheet 50.

At this, light diffusing sheet 50 is to have the optical component that makes from the function of the light of backlight 10 diffusion, thereby can comprise and for example make the light diffusing sheet that in thermoplastic resin, disperses to give light diffusing as the particle of light diffusing agent, thereby form the concavo-convex light diffusing sheet of giving light diffusing on the surface of thermoplastic resin board, thereby the coating layer that the resin combination be dispersed with particle is set is given the light diffusing sheet of light diffusing etc. on the surface of thermoplastic resin board.Its thickness can be for about 0.1～5mm.In addition, also can between light diffusing sheet 50 and liquid crystal panel, dispose the sheet material that prismatic lens (prism sheet) (being also referred to as concentration piece, for example the prismatic lenses for being fit to such as " BEF " of 3M corporate system), brightness improving sheet (identical with the reflective polarizing optical thin film that illustrates previously (DBEF)), light diffusing sheet etc. demonstrate other optical functionals.As required, can dispose also that several demonstrate the sheet material of other optical functionals more than 1.And then, as light diffusing sheet 50, the optical sheet that for example can also use other functions that have the prismatic lens of cylinder (cylindrical) shape and stacked one product of light diffusing sheet (for example light diffusing sheet of in the spy opens 2006-No. 284697 communiques, being put down in writing) and so on the surface and compoundization of light diffusion function to form.

This type of liquid crystal indicator of the present invention uses liquid crystal panel of the present invention, and is same with liquid crystal panel, can realize the raising of physical strength, can improve the warpage of panel simultaneously.In addition, liquid crystal indicator of the present invention is not limited by structure shown in Figure 1, can carry out various distortion.For example, as mentioned above, optical compensating film 23 and/or optical compensating film 33 are optional, can omit.In addition, also can replace optical compensating film 23 and/or optical compensating film 33 to use protective film.

[embodiment]

Below enumerate embodiment, illustrate in greater detail the present invention, but the present invention is not limited by these embodiment.In the example, unless otherwise specified, the % of expression content or use amount and part are weight standard.

The making of [Production Example 1] polarized light film

Average degree of polymerization is about 2,400,99.9 moles of % of saponification degree above, the polyvinyl alcohol film of thickness 75 μ m impregnated in 30 ℃ the pure water, the weight ratio that impregnated in iodine/potassium iodide/water then under 30 ℃ is in 0.02/2/100 the aqueous solution.Then, the weight ratio that impregnated in potassium iodide/boric acid/water under 56.5 ℃ is in 12/5/100 the aqueous solution.Then, utilize after 8 ℃ the pure water washing, 65 ℃ dry down, thereby obtain the polarized light film of absorption orientation iodine in polyvinyl alcohol (PVA).Stretch and mainly carry out in the operation of iodine staining and boric acid processing, total (total) stretching ratio is 5.3 times.

The making of [Production Example 2] acryl resin film

(ground floor: the copolymer of methyl methacrylate and allyl methacrylate (weight ratio the 99.8/0.2)/second layer: the copolymer of butyl acrylate and styrene and allyl methacrylate (weight ratio 79/19/2)/the 3rd layer: it is the acrylic resin film of 80 μ m that the copolymer of methyl acrylate and ethyl acrylate (weight ratio 96/4)) 30 parts mixture, utilization melt extrude making thickness by the acrylic rubber particle as the acrylic acid series multiple layer polymer of 70 parts of the copolymers of methyl methacrylate/acrylic acid methyl esters=96/4 (weight ratio) and 3-tier architecture.

The making of [Production Example 3] anti-dazzle property film (A)

Use: pentaerythritol triacrylate and polyfunctional carbamate acrylate (resultant of reaction of hexamethylene diisocyanate and pentaerythritol triacrylate) are dissolved in the ethyl acetate with weight ratio 60/40, so that solid component concentration is 60%, and contain the ultra-violet solidified resin composition of levelling agent.This ultra-violet solidified resin composition demonstrates 1.53 refractive index after curing.

100 parts of described relatively uv curing resins (adhesive ingredients), adding weight average particle diameter in described ultra-violet solidified resin composition is that 2.7 μ m, refractive index are methyl methacrylate/5 parts on styrene copolymer resin particle of 1.57 and make its dispersion, add ethyl acetate then and become 30%, the preparation coating fluid until solid constituent (comprising resin particle) concentration.

On the acryl resin film of Production Example 2, be coated with described coating fluid, so that dried coating thickness becomes 3.4 μ m, in setting 60 ℃ dryer for, make its dry 3 minutes.From the ultra-violet solidified resin composition layer side of dried film, irradiation is from intensity 20mW/cm ²The light of high-pressure mercury-vapor lamp, become 200mJ/cm until h ray conversion light quantity ², the ultra-violet solidified resin composition layer is solidified, thus obtain the having surperficial irregular hard conating anti-dazzle property film (A) that constitutes by the acryl resin film of (thickness is 3.4 μ m).

Use is measured the turbidity value of anti-dazzle property film (A) according to mist shadow instrument (hazemeter) " HM-150 " type of color technical institute system in (strain) village of JIS K 7136, and the result is 20.1%.In addition, in the mensuration of turbidity,, use transparent adhesives on the optics in order to prevent the warpage of anti-dazzle property film (A), the acryl resin of anti-dazzle property film (A) is film adhered on glass substrate, and make male and fomale(M﹠F) become the surface, be provided to mensuration then.

＜embodiment 1 〉

(a) making of rear side polarization plates

The binding face of the acryl resin film that obtains in to Production Example 2 (thickness is 80 μ m) is implemented by bonding agent it to be fitted on the one side of the polarized light film that obtains in the Production Example 1 after the corona treatment.At optical compensating film (thick 68 μ m to constituting by the two-way stretch norbornene resin, phase difference value 63nm in the face, thickness direction phase difference value 225nm) binding face is implemented after the corona treatment, by bonding agent it is fitted on the opposing face of polarized light film, thereby obtains the rear side polarization plates.Wherein, the optical compensating film that is made of the two-way stretch norbornene resin is fitted into the tensile axis difference quadrature of its slow axis and polarized light film.The layer of bonding agent (thickness is 25 μ m) then, is set on the two-way stretch norborene optical compensating film face of this rear side polarization plates.

(b) making of front face side polarization plates

The anti-dazzle property film (A) that will obtain in Production Example 3 by bonding agent fits on the one side of the polarized light film that obtains in Production Example 1, to triacetylcellulose film (the thick 80 μ m that handled by saponification by bonding agent, phase difference value 3nm in the face, thickness direction phase difference value 50nm) fits on the opposing face of polarized light film, thereby obtain the front face side polarization plates.The layer of bonding agent (thick 25 μ m) is set on the triacetylcellulose film face of this front face side polarization plates.

(c) making of liquid crystal panel and liquid crystal indicator

Peel off the polarization plates on two sides from the liquid crystal cells of the commercially available LCD TV (" LC-42GX1W " of Sharp's (strain) system) of the liquid crystal display cells that is equipped with vertical alignment mode, by the adhesive phase that on optical compensating film, forms, go up the described rear side polarization plates of fitting at the back side of liquid crystal cells (backlight side), the described front face side polarization plates of front face side (identification side) applying at liquid crystal cells, and make the absorption axes of polarization plates all consistent, thereby make liquid crystal panel with the absorption axes direction that was attached at the polarization plates on the LCD TV originally.Then, assemble this liquid crystal panel, make liquid crystal indicator with the formation of backlight/light diffusing sheet/diffusion sheet/diffusion sheet/brightness improving sheet (" DBEF " of 3M corporate system)/liquid crystal panel.In this liquid crystal indicator, owing to prevented the warpage of liquid crystal panel, with the contacting of brightness improving sheet, can prevent irregular colour so can avoid therefore.In addition, the front face side polarization plates surface (hard coating surface) of liquid crystal panel also is difficult to damaged.

＜comparative example 1 〉

In the making of lateral deviation vibration plate, use the acryl resin film of the Production Example 2 that does not have hard conating in front, make the front face side polarization plates similarly to Example 1, the assembling liquid crystal indicator except replacing anti-dazzle property film (A).When using cloth to wipe with the front face side polarization plates surface (acryl resin film surface) of wiping away liquid crystal panel, easy damaged.

The making of [Production Example 4] anti-dazzle property film (B)

Use is dissolved in pentaerythritol triacrylate and polyfunctional carbamate acrylate (resultant of reaction of hexamethylene diisocyanate and pentaerythritol triacrylate) in the ethyl acetate with weight ratio 60/40, solid component concentration 60% and contains the ultra-violet solidified resin composition of levelling agent.This ultra-violet solidified resin composition demonstrates 1.53 refractive index after curing.

100 parts of described relatively uv curing resins (adhesive ingredients), adding weight average particle diameter in described ultra-violet solidified resin composition is that 2.7 μ m, refractive index are methyl methacrylate/5 parts on styrene copolymer resin particle of 1.57 and make its dispersion, add ethyl acetate then and become 30%, the preparation coating fluid until solid constituent (comprising resin particle) concentration.

(ground floor: the copolymer of methyl methacrylate and allyl methacrylate (weight ratio the 99.8/0.2)/second layer: the copolymer of butyl acrylate and styrene and allyl methacrylate (weight ratio 79/19/2)/the 3rd layer: it is the acrylic resin film of 80 μ m that the copolymer of methyl acrylate and ethyl acrylate (weight ratio 96/4)) 30 parts mixture, utilization melt extrude making thickness by the acrylic rubber particle as the acrylic acid series multiple layer polymer of 70 parts of the copolymers of methyl methacrylate/acrylic acid methyl esters=96/4 (weight ratio) and 3-tier architecture. On this acrylic resin film, be coated with described coating fluid, make dried coating thickness become 3.4 μ m, 60 ℃ of of of dryer for of in setting, make its dry 3 minutes.From the ultra-violet solidified resin composition layer side of dried film, irradiation is from intensity 20mW/cm²The light of high-pressure mercury-vapor lamp, become 200mJ/cm until h ray conversion light quantity ², the ultra-violet solidified resin composition layer is solidified, thus obtain the having surperficial irregular hard conating anti-dazzle property film (B) that constitutes by the acrylic resin film of (thickness is 3.4 μ m).

Use is measured the turbidity value of anti-dazzle property film (B) according to mist shadow instrument (hazemeter) " HM-150 " type of color technical institute system in (strain) village of JIS K 7136, and the result is 20.1%.In addition, in the mensuration of turbidity,, use transparent adhesives on the optics in order to prevent the warpage of anti-dazzle property film (B), the acrylic resin of anti-dazzle property film (B) is film adhered on glass substrate, and make male and fomale(M﹠F) become the surface, be provided to mensuration then.

The making of [Production Example 5] anti-dazzle property film (C)

With the thickness of hard conating is that the mode of 30 μ m is coated above-mentioned coating fluid (ultra-violet solidified resin composition of resinous particle) on the acrylic resin film, in addition, similarly makes anti-dazzle property film (C) with Production Example 4.Measure the turbidity value of anti-dazzle property film (C) according to the said determination method, the result is 20%.

＜embodiment 2 〉

(a) making of rear side polarization plates

After the binding face of unilateral stretching pet film (thickness is 40 μ m) is implemented corona treatment, it is fitted on the one side of the polarized light film that obtains in the Production Example 1 by bonding agent.At optical compensating film (thick 68 μ m to constituting by the two-way stretch norbornene resin, phase difference value 63nm in the face, thickness direction phase difference value 225nm) binding face is implemented after the corona treatment, by bonding agent it is fitted on the opposing face of polarized light film, thereby obtains the rear side polarization plates.Wherein, the optical compensating film that is made of unilateral stretching pet film and two-way stretch norbornene resin is distinguished quadrature by the tensile axis of slow axis of fitting into them and polarized light film.Then, the two-way stretch norborene in this rear side polarization plates is the layer that bonding agent (thickness is 25 μ m) is set on the optical compensating film face.

(b) making of front face side polarization plates

The anti-dazzle property film (B) that will obtain in Production Example 4 by bonding agent fits on the one side of the polarized light film that obtains in Production Example 1, to triacetylcellulose film (the thick 80 μ m that handled by saponification by bonding agent, phase difference value 3nm in the face, thickness direction phase difference value 50nm) fits on the opposing face of polarized light film, thereby obtain the front face side polarization plates.The layer of bonding agent (thick 25 μ m) is set on the triacetylcellulose film face of this front face side polarization plates.

(c) making of liquid crystal panel and liquid crystal indicator

Peel off the polarization plates on two sides from the liquid crystal cells of the commercially available LCD TV (" LC-42GX1W " of Sharp's (strain) system) of the liquid crystal display cells that is equipped with vertical alignment mode, by the adhesive phase that on optical compensating film, forms, go up the described rear side polarization plates of fitting at the back side of liquid crystal cells (backlight side), the described front face side polarization plates of front face side (identification side) applying at liquid crystal cells, and make the absorption axes of polarization plates all consistent, thereby make liquid crystal panel with the absorption axes direction that was attached at the polarization plates on the LCD TV originally.Then, assemble this liquid crystal panel, make liquid crystal indicator with the formation of backlight/light diffusing sheet/prismatic lens (" BEF " of 3M corporate system)/brightness improving sheet (" DBEF " of 3M corporate system)/liquid crystal panel.For this liquid crystal indicator, the irregular colour (interfering uneven) when positive and oblique direction is observed is little.In addition, when using cloth to wipe with the front face side polarization plates surface (hard coating surface) of wiping away liquid crystal panel, be difficult to damaged.

＜embodiment 3 〉

As the anti-dazzle property film of front face side polarization plates, use the anti-dazzle property film (C) that in Production Example 5, obtains, in addition, carry out similarly to Example 1, make the front face side polarization plates, the assembling liquid crystal indicator.For this liquid crystal indicator, the irregular colour (interfering uneven) when positive and oblique direction is observed is little.In addition, when using cloth to wipe with the front face side polarization plates surface (hard coating surface) of wiping away liquid crystal panel, be difficult to damaged.

＜comparative example 2 〉

In front in the making of lateral deviation vibration plate, use except replacing anti-dazzle property film (B) not form the acrylic resin film (thick 80 μ m) of hard conating, make the front face side polarization plates similarly to Example 1, the assembling liquid crystal indicator.For this liquid crystal indicator, the irregular colour (interfering uneven) when positive and oblique direction is observed is big, and identification is poor.In addition, when using cloth to wipe with the front face side polarization plates surface (acrylic resin film surface) of wiping away liquid crystal panel, easy damaged.

From in all senses, this time disclosed embodiment and embodiment are illustration, do not have restriction.Scope of the present invention is not above-mentioned explanation but with the content shown in the scope of claim, comprises and the meaning of the scope equalization of claim and the whole changes in the scope.

Claims (7)

1. polarization plates group, it is the liquid crystal panel polarization plates group that is made of the 1st polarization plates and the 2nd polarization plates, wherein,

Described the 1st polarization plates has the 1st polarized light film that is made of polyvinyl alcohol resin and is laminated in the transparent protective film of the one side of described the 1st polarized light film,

Described the 2nd polarization plates has the anti-dazzle property film of the turbidity value of the 2nd polarized light film that is made of polyvinyl alcohol resin and the one side that is laminated in described the 2nd polarized light film in the scope more than 0.1%, below 45%,

Described anti-dazzle property film has the acryl resin film and the thickness that is laminated on the face of the side opposite with described the 2nd polarized light film side in the described acryl resin film is the hard conating of 2～30 μ m.

2. polarization plates group according to claim 1, wherein,

Transparent protective film in described the 1st polarization plates is stretching pet film or acryl resin film.

3. polarization plates group according to claim 2, wherein,

Described the 1st polarization plates also has: stacked optical compensating film or protective film on the face of the opposition side of the face that is laminated with described stretching pet film or acryl resin film in described the 1st polarized light film.

4. according to claim 2 or 3 described polarization plates groups, wherein,

Described the 2nd polarization plates also has: stacked optical compensating film or protective film on the face of the opposition side of the face that is laminated with described anti-dazzle property film in described the 2nd polarized light film.

5. liquid crystal panel, it has been to use the liquid crystal panel of the described polarization plates group of claim 1, wherein,

Dispose described the 1st polarization plates, liquid crystal cells and described the 2nd polarization plates successively,

The face of opposition side that described the 1st polarization plates is configured to the face that is laminated with described stretching pet film in described the 1st polarized light film is relative with described liquid crystal cells, and described the 2nd polarization plates to be configured to the face of opposition side of the face that is laminated with described anti-dazzle property film in described the 2nd polarized light film relative with described liquid crystal cells.

6. liquid crystal indicator, wherein,

Have the described liquid crystal panel of backlight, light diffusing sheet and claim 5 successively,

It is relative with described light diffusing sheet that described liquid crystal panel is configured to described the 1st polarization plates.

7. liquid crystal indicator, wherein,

Have backlight, light diffusing sheet, brightness improving sheet and the described liquid crystal panel of claim 5 successively,

It is relative with described light diffusing sheet that described liquid crystal panel is configured to described the 1st polarization plates.

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