CN101454699A - Elliptically polarizing plate, method of manufacturing elliptically polarizing plate and liquid crystal display device - Google Patents
Elliptically polarizing plate, method of manufacturing elliptically polarizing plate and liquid crystal display device Download PDFInfo
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- CN101454699A CN101454699A CN200780019909.XA CN200780019909A CN101454699A CN 101454699 A CN101454699 A CN 101454699A CN 200780019909 A CN200780019909 A CN 200780019909A CN 101454699 A CN101454699 A CN 101454699A
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- liquid crystal
- polarizing plate
- ellipsoidal polarizing
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- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
- CMWTZPSULFXXJA-VIFPVBQESA-N naproxen Chemical compound C1=C([C@H](C)C(O)=O)C=CC2=CC(OC)=CC=C21 CMWTZPSULFXXJA-VIFPVBQESA-N 0.000 description 1
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- 230000009022 nonlinear effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 125000003566 oxetanyl group Chemical group 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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- 239000000049 pigment Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 229920001643 poly(ether ketone) Polymers 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002480 polybenzimidazole Polymers 0.000 description 1
- 229920002577 polybenzoxazole Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001470 polyketone Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N propylene glycol Substances CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
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- 239000003381 stabilizer Substances 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 230000005469 synchrotron radiation Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
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- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 150000003639 trimesic acids Chemical class 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
- 125000005580 triphenylene group Chemical group 0.000 description 1
- 229940124543 ultraviolet light absorber Drugs 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3016—Polarising elements involving passive liquid crystal elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/56—Materials, e.g. epoxy or silicone resin
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
- G02F2413/10—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates with refractive index ellipsoid inclined, or tilted, relative to the LC-layer surface O plate
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
Disclosed is an elliptical polarizing plate wherein a light-transmitting protection film, a polarizing element and an optically anisotropic element are arranged in layers in this order. The elliptical polarizing plate is free from problems such as layer separation even under high temperature, high humidity conditions, since the layered structure thereof is simplified. This elliptical polarizing plate is characterized in that the optically anisotropic element contains a liquid crystal layer which is obtained by aligning a liquid crystalline composition exhibiting at least a positive uniaxiality in a twisted nematic mode or a hybrid nematic mode in a liquid crystal state, and then fixing the alignment.
Description
Technical field
The present invention relates to ellipsoidal polarizing plate and manufacture method thereof, described ellipsoidal polarizing plate is made of the optical anisotropic device that has twisted-nematic directive texture or the liquid crystal layer that mixed to the immobilization of row directive texture.The invention still further relates to the liquid crystal indicator and the el display device that have used above-mentioned ellipsoidal polarizing plate.
Background technology
Liquid crystal indicator roughly divide into can with transmission mode carry out transmission-type that image shows, can with reflective-mode carry out reflection-type that image shows, can be with transmission mode, reflective-mode both carry out these 3 kinds of the Transflectives that image shows, from features such as its slim light weights, extensively popularize as display device such as notebook computer, televisors.Especially transflective liquid crystal display device adopts and has both the display mode that reflection-type and transmission-type are arranged, and switch to any display mode according to lightness on every side, thus, can reduce consumption electric power, the dark place demonstration that can become clear simultaneously in the open,, therefore, be used for various mancarried electronic aids etc. more.
Liquid crystal indicator has slim light weight, the such advantage of low consumption electric power, but present situation is, for example can not realize white and black displays completely in the STN type liquid crystal indicator, in TN type liquid crystal indicator, especially in the transmission mode, because the refractive index anisotropy that liquid crystal molecule has, therefore, can not avoid and show that contrast reduces, Show Color changes when tilted direction is observed or the problem of field angle such as gray inversion, and expect that the liquid crystal indicator of display performance excellences such as its improvement can't fully realize.
Several methods that are used to improve the display performance of STN type liquid crystal indicator have been proposed, the method for first configuration phase difference film between the polaroid of liquid crystal indicator and liquid crystal cells.This method has following advantage: applying phase-contrast film and make ellipsoidal polarizing plate on polaroid just, the manufacturing process of little amplitude change liquid crystal indicator can implement easily.But, the problem that exists is, phase-contrast film and the amount thickness increase that is used for the adhesive phase bond layer of its applying, when in the manufacturing process of ellipsoidal polarizing plate, being wound into roller, the coiling quantitative change of each roller is few, the problem that the thickness of the problem of throughput rate variation and the liquid crystal panel of final products increases.
In addition, owing to constitute by multilayer not of the same race, therefore, and the difference of the flexible behavior that produces according to the heat and the humidity of each layer, the interface peel etc. that produces polaroid and phase-contrast film sometimes in various fail-tests is bad.At present, as phase-contrast film, most of macromolecule membrane that polycarbonate etc. has been carried out the uniaxial tension orientation that uses, it is the MD direction that these orientation axes in the band-like film form are limited to draw direction usually.On the other hand, because polaroid also uses single axle drawn membranes such as polyvinyl alcohol (PVA), therefore, the absorption axes in the band-like film form is limited to the MD direction usually.Therefore, polaroid and phase-contrast film are fitted and the situation of manufacturing ellipsoidal polarizing plate continuously, be limited to the parallel special situation of orientation axes of the absorption axes and the phase-contrast film of polaroid by the band-like film form.In order to make parallel axle configuration in addition, need cut into sheet and it is fitted by band-like film, thereby also have the problem that operation is numerous and diverse, produce rate variance.And, in the phase-contrast film that has carried out stretch orientation, be difficult to freely control high molecular orientation, restricted to the degree of freedom of optical characteristics.As described above, the absorption axes of polaroid and the orientation axes of phase-contrast film have various axle configurations, and the requirement with respect to the ellipsoidal polarizing plate of excellent in optical properties can not fully adapt to.
Relative therewith, in the phase-contrast film that has used liquid-crystal compounds, tail off with the orientation axes relative restrictions, for example proposed to make the directed immobilized optical anisotropic device (patent documentation 1 and 2) of liquid crystal liquid crystal property macromolecule.And, proposed by 1/4 wavelength plate that the immobilized liquid crystal film of twisted-nematic directive texture is constituted (patent documentation 3 and 4).
Used under the high molecular situation of this liquid crystal liquid crystal property, the orientation axes angle can at random be set, and therefore, can and make various ellipsoidal polarizing plates by the continuous applying of band-like film form.But as mentioned above, the thickness of ellipsoidal polarizing plate increases sometimes, and the interface peel etc. that is created in polaroid and optical anisotropic device under high temperature or the super-humid conditions is bad.
In addition, as the method for the field angle characteristic that solves TN type liquid crystal display cells, at present, in the transmissive liquid crystal display device that has used TN pattern (twist angle 90 degree of liquid crystal), finished that optical compensating film is configured in liquid crystal cells and the motion between the polaroid up and down, and be practical.
For example have will make disc-like liquid crystal carried out mixing directed optical compensating film and be configured in liquid crystal cells and the formation between the polaroid up and down, will make the liquid crystal liquid crystal property macromolecule carry out mixing in addition and be configured in liquid crystal cells and (patent documentations 5～7) such as formations between the polaroid up and down to the directed optical compensating film of row.
In addition, in transflective liquid crystal display device, in transmission mode, the circular polarizing disk that needs on the displaying principle to constitute by 1 or many uniaxiality phase-contrast films and polaroid be configured in liquid crystal cells about.
For the field angle of the transmission mode that enlarges this transflective liquid crystal display device, proposed to make the circular polarizing disk that is configured between liquid crystal cells and the backlight to carry out mixing the method (patent documentation 8) of directed optical compensating film to row.
Aspect the high performance of optical characteristics, identical with sTN type liquid crystal indicator, as the mobile phone or portable information terminal equipment representative popularized significantly in recent years, the light-weighted expectation of slimming is also very surging.Accompany with it, with regard to the optical thin film that is used for display device, also urgently expect the slimming lightweight.Therefore, also carrying out the trial that unfertile land is more made macromolecule oriented film etc., but because the restriction in optical characteristics or the manufacturing process, therefore there are the following problems: boundary is arranged aspect the attenuation of macromolecule oriented film making, at laminated and thickness thickening under the situation about using.
In order to solve such problem, think and use that not adopt the optical element that is made of liquid crystal material of the such supporting substrate film of patent documentation 9 be effective, but, need further utilize bonding agent and polaroid to make its applying for above-mentioned optical element is applied to liquid crystal indicator.
When laminated above-mentioned optical element, there is not the situation of supporting substrate film worry to be arranged at aspects such as applicability, permanance.On the other hand, if have direct laminated optical element on 1 supporting substrate film of polarization element, then seek further slimming by omitting the adhesive phase bond layer, in addition, can obtain at aspects such as permanance also very excellent film, but since laminated this optical element, the manufacture method of therefore also not establishing industry.
(1) patent documentation 1: Japanese kokai publication hei 4-57017 communique
(2) patent documentation 2: Japanese kokai publication hei 6-242317 communique
(3) patent documentation 3: Japanese kokai publication hei 2002-48917 communique
(4) patent documentation 4: Japanese kokai publication hei 2004-309904 communique
(5) patent documentation 5: No. 2640083 communique of Jap.P.
(6) patent documentation 6: Japanese kokai publication hei 11-194325 communique
(7) patent documentation 7: Japanese kokai publication hei 11-194371 communique
(8) patent documentation 8: TOHKEMY 2002-31717 communique
(9) patent documentation 9: Japanese kokai publication hei 8-278491 communique
Summary of the invention
The objective of the invention is to, the liquid crystal indicator and the el display that ellipsoidal polarizing plate and manufacture method thereof are provided and use it, described ellipsoidal polarizing plate is by the layer designs simplification with ellipsoidal polarizing plate, suppress thickness, under high temperature, super-humid conditions, can not produce yet peel off etc. bad, and the absorption axes of polaroid is at random set the orientation axes angle of optical anisotropic device relatively, can be fitted continuously by the band-like film form.
Promptly; the present invention relates to a kind of ellipsoidal polarizing plate; its laminated successively light transmission protective film, polarization element and optical anisotropic device form; it is characterized in that, this optical anisotropic device contain make the liquid crystalline composition that shows positive uniaxiality at least under mesomorphic state, carry out twisted-nematic directed or mix to the directed back of row, should the immobilized liquid crystal layer of orientation.
In addition, the present invention relates to a kind of manufacture method of ellipsoidal polarizing plate, it is characterized in that, at least pass through following each operation: (1) the 1st operation, by bond layer 1 that light transmission protective film and polarization element is bonding, obtain the lamilated body (A) that constitutes by light transmission protective film/bond layer 1/ polarization element; (2) the 2nd operations, implementing to form the layer that comprises the liquid crystalline composition that shows positive uniaxiality at least on the directed substrate of friction treatment, it is directed or mix to row directed to make this layer carry out twisted-nematic, afterwards should the orientation immobilization, form optical anisotropic device, obtain comprising the lamilated body (B) of directed substrate/optical anisotropic device; (3) the 3rd operations; make the optical anisotropic device side of above-mentioned lamilated body (B) and the polarization element side bonds of above-mentioned lamilated body (A) by bond layer 2; peel off directed substrate afterwards; optical anisotropic device is transferred on the above-mentioned lamilated body (A), obtains comprising the ellipsoidal polarizing plate of light transmission protective film/bond layer 1/ polarization element/bond layer 2/ optical anisotropic device.
In addition, the present invention relates to a kind of manufacture method of ellipsoidal polarizing plate, it is characterized in that, at least pass through following each operation: (1) the 1st operation, by bond layer 1 that light transmission protective film and polarization element is bonding, obtain comprising the lamilated body (A) of light transmission protective film/bond layer 1/ polarization element; (2) the 2nd operations; friction treatment is implemented on polarization element surface at above-mentioned lamilated body (A); formation comprises the layer of the liquid crystalline composition that shows positive uniaxiality at least; it is directed or mix to row directed to make this layer carry out twisted-nematic; afterwards should the orientation immobilization; form optical anisotropic device, obtain comprising the ellipsoidal polarizing plate of light transmission protective film/bond layer 1/ polarization element/optical anisotropic device.
In addition, the present invention relates to a kind of liquid crystal indicator, it is characterized in that, on the face of at least one side of liquid crystal cells, dispose above-mentioned described ellipsoidal polarizing plate.
In addition, the present invention relates to a kind of el display device, it is characterized in that, possess above-mentioned described ellipsoidal polarizing plate.
Ellipsoidal polarizing plate of the present invention is difficult to damage in the bonding process of optical anisotropic device and polarization element on the optical anisotropic device layer, optical anisotropic device excellent in adhesion.And, because it is few to constitute laminated layer number of ellipsoidal polarizing plate, therefore, the generation of in endurancing, not peeling off or steeping at the interface.Since with the bonding process of polarization element in also can fit with the band-like film form, therefore, compare with existing method, have the advantage that bonding process can rationalize.
Description of drawings
Fig. 1 is used to illustrate the pitch angle of liquid crystal molecule and the concept map of twist angle.
Fig. 2 is the concept map of directive texture that constitutes the liquid crystal liquid crystal property film of optical anisotropic device.
Fig. 3 is the concept map of the pre-tilt direction of explanation liquid crystal cells.
Fig. 4 is the sectional axonometric drawing that schematically shows the configuration example of ellipsoidal polarizing plate of the present invention.
Fig. 5 is the sectional axonometric drawing that schematically shows other configuration example of ellipsoidal polarizing plate of the present invention.
Fig. 6 is the sectional axonometric drawing that schematically shows other configuration example of ellipsoidal polarizing plate of the present invention.
Fig. 7 is the concept map of the LCD of use among the embodiment 5.
Fig. 8 is the planimetric map of the shaft angle degree relation of the absorption axes of polaroid in the liquid crystal indicator of explanation embodiment 5 or liquid crystal cells, optical anisotropic layer.
Fig. 9 is the concept map of the OLED display of use among the embodiment 6.
Figure 10 is the concept map of the LCD of use among the embodiment 11.
Figure 11 is the planimetric map of the shaft angle degree relation of the absorption axes of polaroid in the liquid crystal indicator of explanation embodiment 11 or liquid crystal cells, optical anisotropic layer.
Symbol description
1: ellipsoidal polarizing plate; 2: the light transmission protective film; 3: bond layer 1; 4: polarization element; 5: bond layer 2; 6: optical anisotropic device; 7: orientation film; 8: liquid crystal cells; 9: polaroid; 10: backlight; 11: organic EL; 12: transparent glass substrate; 13: anode; 14: luminescent layer; 15: negative electrode; 16: the phase difference compensation plate; 41: the absorption axes of the polarization element 4 of observer's side; 61: the orientation axes of polarization element 4 sides of optical anisotropic device 6; 62: the orientation axes of liquid crystal cells 8 sides of optical anisotropic layer 6; 81: the orientation direction in the liquid crystal cells 8 on the face of polarization element 4 sides of liquid crystal layer; 82: the orientation direction in the liquid crystal layer 8 on the face of backlight 10 sides of liquid crystal layer; 91: the absorption axes of polaroid 9
Embodiment
Below, the present invention is described in detail.
In the present invention, optical anisotropic device and polarization element is direct or bonding by bonding agent, make ellipsoidal polarizing plate thus.Thus, compare, the number of plies is reduced with the existing ellipsoidal polarizing plate that on the polaroid of the both sides of protecting polarization element with film for optical use such as cellulose triacetate films, is fitted with optical anisotropic device.Consequently, can make the gross thickness attenuation of ellipsoidal polarizing plate, simultaneously, the influence of the drawdown deformation that the difference of the flexible behavior of each layer that heat or humidity cause causes diminishes, can eliminate in the interface of applying peel off etc. bad.
The layer of the ellipsoidal polarizing plate that obtains among the present invention constitutes by following (I) or any formation (II), can further append members such as light transmission outer coating as required, wherein, except that making the liquid crystalline composition that shows positive uniaxiality in the present invention under mesomorphic state, carry out the twisted-nematic orientation or mixing to row directed, and outside the optical anisotropic device this point that constitutes of should orientation immobilized liquid crystal layer, be not particularly limited.Obtaining to use (I) or any formation (II) on the ellipsoidal polarizing plate this point of thin thickness.
(I) light transmission protective film/bond layer 1/ polarization element/bond layer 2/ optical anisotropic device
(II) light transmission protective film/bond layer 1/ polarization element/optical anisotropic device
Below, describe successively being used for member of formation of the present invention.
At first, describe being used for liquid crystalline composition of the present invention.
The optical anisotropic device that is used for ellipsoidal polarizing plate of the present invention contain make the liquid crystalline composition that shows positive uniaxiality on the optics at least under mesomorphic state, carry out twisted-nematic directed or mix to the directed back of row, should the immobilized liquid crystal layer of orientation.Particularly, can obtain by the following method, that is, and will be to be cooled to below the glass transition temperature (Tg), with directed immobilization at the liquid crystalline composition that has carried out directed liquid crystal liquid crystal property macromolecule on the directed substrate.This liquid crystalline composition comprises as the liquid crystal liquid crystal property macromolecule, can use the TLCP that shows liquid crystal liquid crystal property when fusion to show the liquid crystal liquid crystal property polymeric composition of the liquid crystal liquid crystal property macromolecule of positive uniaxiality on the optics.Even employed TLCP needs to be cooled to the molecules align state that also can keep liquid crystal phase below the Tg from molten condition (mesomorphic state).
Liquid crystal phase during the fusion of liquid crystal liquid crystal property macromolecule can be smectic type, to any molecule arranging structures such as row, twisted-nematic, cholesterics, in addition, be respectively even orientation and vertical orientation state near the directed substrate and near the air interface, the high molecular average guide shaft of liquid crystal liquid crystal property can be tilt, the so-called mixing orientation of normal direction from film.
As the liquid crystal liquid crystal property macromolecule, can use various backbone chain type liquid crystal macromolecules, side chain type liquid crystal macromolecule or their potpourri.As the backbone chain type liquid crystal macromolecule, can enumerate: polyesters, polyamide-based, polycarbonate-based, polyimide, polyurethanes, polybenzimidazoles class, polybenzoxazole class, polybenzothiozole class, poly methylene imine class, polyesteramide class, polyestercarbonate class, the liquid crystal liquid crystal property macromolecule of polyester-imide class or their potpourri etc.Wherein, preferably giving the semi-aromatic kind polyester that crooked chain Alt keys such as middle health ester (the メ ソ ゲ Application) base of liquid crystal liquid crystal property and polymethine, polyethylene oxide, polysiloxane synthesize in the present invention is that liquid crystal liquid crystal property macromolecule or all aromatic kind polyester that does not have crooked chain are the liquid crystal liquid crystal property macromolecule.In addition, as the side chain type liquid crystal macromolecule, can be set forth on the material of skeletal chain that polyacrylate, polymethacrylate, polyethylene kind, polysiloxane-based, polyethers, poly-malonate class etc. have straight chain shape or ring texture has the liquid crystal liquid crystal property macromolecule of middle health ester group or their potpourri etc. as the side chain bonding.Wherein, in the present invention preferably on the skeletal chain across the interval bonding that comprises crooked chain give liquid crystal liquid crystal property middle health ester group the side chain type liquid crystal macromolecule and on main chain and side chain, have in the liquid crystal liquid crystal property macromolecule of molecular structure of health ester.
In addition, in order to cause the twisted-nematic orientation, the liquid crystalline composition that forms the twisted-nematic orientation is preferably especially and adds the chirality agent or be combined with the various liquid crystal materials of the structural unit with at least a kind of chirality or the liquid crystalline composition of non-liquid crystal material in said composition.
Structural unit as chirality, can utilize methyl isophthalic acid by 2-, the 4-butylene glycol, 2, the 4-pentanediol, 1, the 2-propylene glycol, 2-chloro-1, the 4-butylene glycol, 2-fluoro-1, the 4-butylene glycol, 2-bromo-1, the 4-butylene glycol, 2-ethyl-1, the 4-butylene glycol, 2-propyl group-1, the 4-butylene glycol, 3-methyl-hexanediol, 3-methyl hexane diacid, naproxen (Na Off ロ キ セ Application) derivant, camphoric acid, dinaphthol (PVC Na Off ト-Le), the structural unit that menthol etc. are derived, perhaps contain the structural unit of cholest or the unit that their derivant (for example derivant such as diacetoxyl (ジ ア セ ト キ シ) compound) is derived.The said structure unit can be any of R body, S body, can also be the potpourri of R body and S body.Need to prove that these structural units are illustration after all, the present invention is not subjected to its any restriction.
In addition, even in the liquid crystal liquid crystal property macromolecule, also comprise oligomer or low molecular weight liquid crystal, the mixing of importing by crosslinkable groups or suitable crosslinking chemical, at mesomorphic state or be cooled to below the liquid crystal transition temperature and carried out utilizing methods such as heat cross-linking or photo-crosslinking can carry out the material of producing high-molecular under the directed immobilized state.In addition, even the disc-like liquid crystal compound also can use no problemly.The liquid crystal liquid crystal property macromolecule uses the liquid crystal liquid crystal property macromolecule that shows the plus or minus uniaxiality on the optics usually.These optical characteristics can suitably be selected according to desired performance in the optical anisotropic device, but have carried out under the situation of high molecule liquid crystal layer of twisted-nematic orientation, the preferred liquid crystal liquid crystal property macromolecule that shows positive uniaxiality that uses.
As low molecular weight liquid crystal, can enumerate have Schiff bases, biphenyl class, terphenyl class, ester class, monothioester class, Stilbene class, diphenyl acetylene class, azoxy class, azo class, cyclohexylbenzene class, miazines, cyclohexyl cyclohexanes, trimesic acid class, triphenylene class, three polyindenes (ト Le Network セ Application) class, phthalocyanines, the low molecular weight liquid crystal compound of porphines quasi-molecule skeleton or potpourri of these compounds etc.Need to prove; the liquid crystalline composition that comprises above-mentioned various liquid-crystal compoundss contains under the situation of polymerizable groups such as vinyl, (methyl) acryloyl group, epoxy radicals, oxetanyl, and preferred the interpolation is suitable for polymerizable group separately and do not hinder the such various reaction initiators of purpose of the present invention, for example various radical initiators or kation propellant.
Because the Tg of liquid crystalline composition brings influence for the directed stability after the directed immobilization, therefore, is preferably more than the room temperature, more preferably more than 50 ℃.Tg can or adjust by all cpds etc. as required according to the liquid crystal liquid crystal property macromolecule that is used to liquid crystalline composition or low molecular weight liquid crystal, chirality agent, but also can utilize aforesaid cross-linking method.
As the above-mentioned all cpds that adds as required, so long as the compound that does not hinder the directed of employed liquid crystalline composition among the present invention and do not break away from purpose of the present invention get final product, can enumerate be used to make liquid crystalline composition layer form uniform levelling agent, surfactant, stabilizing agent.
Below, the para-directing group plate describes.
As directed substrate, can use for example heat-curing resin, polyamide such as polyimide, epoxy resin, phenolics; Polyetherimide; Polyetherketone; Polyetheretherketone (PEEK); Polyketone; Polyethersulfone; Polyphenylene sulfide; Polyphenylene oxide; Polyester such as polyethylene terephthalate, PEN, polybutylene terephthalate; Polyoxymethylene; Polycarbonate; Poly-(methyl) acrylate; Illustrated macromolecule membrane in the thermoplastic resins such as polyvinyl alcohol (PVA).In addition, for orientation, can form the organic film of resins such as comprising polyvinyl alcohol (PVA) or polyimide derivant at the surface of macromolecule membrane control liquid crystalline composition.Above-mentioned macromolecule membrane is implemented directional process such as friction treatment and is supplied with directed substrate.
As mentioned above, oriented liquid crystallinity composition is implemented friction treatment usually on directed substrate.The friction treatment MD direction of banded directed substrate is relatively carried out with the angle arbitrarily of regulation.The angle of the frictional direction of MD direction can suitably be set according to the performance of optical anisotropic device relatively, but requires the situation as the performance of colorimetric compensation plate, and preferred usually MD direction relatively rubs at tilted direction.As the angle of tilted direction, the scope of preferred-45 degree～+ 45 degree.
Friction treatment can be carried out with arbitrary method, for example, band-like film is being transported on the objective table of MD direction, the MD direction of relative band-like film, with angle configurations friction roller arbitrarily, this film is transported to the MD direction on one side,, this film surface is carried out friction treatment Yi Bian make this friction roller rotation.The angle that the moving direction of friction roller and objective table constituted is pasted suitable friction cloth material for can freely regulated structure on the surface of friction roller.
For example make the method that liquid crystalline composition is dissolved in the appropriate solvent and coating is dry or utilize method that T shape mould etc. directly melt extrudes liquid crystalline composition etc. as liquid crystalline composition being launched and form the method for the layer of liquid crystalline composition at the friction treatment face of directed substrate, can enumerating.Consider that from the aspects such as homogeneity that film is thick the method for carrying out solution coating and drying is fit to.Coating method as the solution of liquid crystalline composition is not particularly limited, and for example can adopt: mould cladding process, seam die head coating (slot die coat) method, sliding die coating process, rolling method, rod are coated with method, dipping lift method etc.
After having carried out coating, utilize suitable drying means except that after desolvating, under the temperature of regulation, heat official hour, it is directed or mix after the row orientation to make liquid crystalline composition carry out twisted-nematic, be cooled to below the Tg, or the method for the liquid crystalline composition that is suitable for using, for example react (curing) with optical processing and/or heat treated, thus should the orientation immobilization, can form and make the immobilized liquid crystalline composition layer of directive texture.
Need to prove that what is called makes the directive texture immobilization, be meant and under service condition, do not upset directive texture but maintenance.Same directed state also can be made in liquid crystal cells, by with the directive texture immobilization, does not need the substrates such as glass in the liquid crystal cells, can realize the raising of lightweight, slimming, applicability etc.
As light-struck method, has the light of light sources such as the such metal halide lamp of spectrum, high-pressure mercury-vapor lamp, Cooper-Hewitt lamp, xenon lamp, arc lamp, laser in the absorbing wavelength territory of the next comfortable reaction initiator that uses of irradiation.As per 1 square centimeter exposure, as cumulative exposure usually at 1～2000mJ, preferably in the scope of 10～1000mJ.But, the situation that the absorption region of reaction initiator and the spectrum of light source are significantly different or in all cpds that constitutes liquid crystalline composition etc., have optical source wavelength absorption can not these qualifications such as situation.In these cases, also can adopt suitable photaesthesia agent or the different reaction initiator more than 2 kinds of absorbing wavelength are mixed and the method for use etc.
Temperature during rayed preferably this liquid crystalline composition becomes the temperature range of liquid crystal phase, in order fully to improve the effect of solidifying, preferably carries out rayed under the temperature more than the Tg of this liquid crystalline composition.
The optical anisotropic device that is used for ellipsoidal polarizing plate of the present invention contains makes twisted-nematic orientation or mixing to the directed immobilized liquid crystal layer of liquid crystal aligning structure of row.
Twisted-nematic oriented liquid crystal layer is meant to have the optical anisotropy axle, and will have the immobilized layer of twisted-nematic directive texture of the structure of optical anisotropy axle distortion towards another face from one face.Therefore, the optical anisotropic device that comprises twisted-nematic oriented liquid crystal layer has with the mode of twisting continuously with its optical anisotropy axle and will have the identical characteristic of optical anisotropic device that anisotropic layer has carried out the multilayer coincidence on the optics, with common TN (twisted-nematic) liquid crystal cells or STN (supertwist is to row) liquid crystal cells etc. similarly, the value of the product representation of usefulness birefringence n and thickness d) and twist angle have delays (=Δ nd:.In addition,, also preferably postpone during the serviceability temperature environmental change to change, postpone also to turn back to the optical anisotropic device of original temperature compensating type when turning back to original temperature as this optical anisotropic device.
Product of the birefraction Δ n of twisted-nematic oriented liquid crystal layer and thickness d (nm) (Δ nd) and twist angle depend on that employed purposes is liquid crystal indicator or el display device, but the Δ nd that considers the light of preferred relative wavelength 550nm from the optical characteristics aspect is below the above 1500nm of 50nm and twist angle is below 5 degree above 400 are spent.
In addition, the thick scope that needs only in the performance that can bring into play optical anisotropic device of the film of twisted-nematic oriented liquid crystal layer just is not particularly limited, and about 0.05 μ m～50 μ m, preferred about 0.1 μ m～30 μ m are fit to.
And, when for example using the liquid crystal layer of STN-LCD mode as liquid crystal indicator, the Δ nd of twisted-nematic oriented liquid crystal layer and twist angle also depend on the delay and the twist angle of the liquid crystal cells of use, therefore cannot treat different things as the same, but respectively the above 1200nm of preferred 400nm is following and above 300 degree of 120 degree are following, more preferably the above 1000nm of 500nm is following and below above 260 degree of 160 degree, more preferably the above 850nm of 600nm following and 170 spend more than 250 spend below.In addition, the direction of twisted-nematic oriented liquid crystal layer distortion is preferably opposite with the direction of the distortion of liquid crystal cells.
In addition, during as the antireflective film of liquid crystal indicator for example or el display device, have on the good circularly polarized light characteristic this point, the twisted-nematic oriented liquid crystal layer Δ nd of the light of preferred relative wavelength 550nm is below the above 300nm of 140nm, and twist angle is below above 85 degree of 30 degree, and it is following and above 50 degree of 40 degree are following, the above 216nm of (2) 176nm is following and above 70 degree of 58 degree are following, the above 270nm of (3) 230nm is following and 80 any conditions below spending more than 70 degree especially preferably to satisfy the above 175nm of (1) 155nm.Need to prove on the direction of distortion, have 2 kinds, can twist, also can twist for a left side for the right side.
Mixing is that 5 °～45 ° mixing is to the layer of the immobilized mixing of row directive texture to row oriented liquid crystal layer to row oriented liquid crystal layer for containing at least liquid crystalline composition formed average slope angle under mesomorphic state.
At this, to be meant that to the row orientation liquid crystal molecule mixes to row directed in said mixing among the present invention, and the angle that constitutes of the guide shaft of the liquid crystal molecule of this moment and liquid crystal layer plane on this layer with following be different oriented approach.Therefore because the angle of near interface and this guide shaft of following near interface and this layer plane formation is different in the above, so, we can say on this layer and below between this angle change continuously.
In addition, with the mixing that mixed to the directed state immobilization of row to row oriented liquid crystal layer, the guide shaft of liquid crystal molecule in the whole place of the thick direction of film of this layer towards different angles.Therefore, when this layer observed as the such structure of layer, optical axis did not exist.
In addition, said average slope angle is meant the guide shaft of the liquid crystal molecule of mixing in the thick direction of film of row oriented liquid crystal layer and mixes the mean value of the angle that constitutes to row directional crystal layer plane among the present invention.Supply with mixing of the present invention to row oriented liquid crystal layer, be generally 25～90 degree, preferred 35～85 degree, further preferred 45～80 angles of spending at the near interface guide shaft (director) of this layer and the angle formation of layer plane formation as absolute value, constitute the angle that is generally 0～20 degree, preferred 0～10 degree as absolute value at the opposing face of this face, its average slope angle is generally 5～45 degree, preferred 15～43 degree, 25～40 degree more preferably as absolute value.When average slope angle broke away from above-mentioned scope, the contrast when tilted direction is observed may reduce etc., and was not preferred.Need to prove that average slope angle can be used crystal rotation method (crystal rotation) and obtain.
In addition, mixing is to row oriented liquid crystal layer, relatively to be used to manifest the film of this liquid crystal layer of field angle improved effect more suitably thick for liquid crystal indicator, depend on mode or various optical parametric as the liquid crystal display cells of object, therefore cannot treat different things as the same, but common scope at 0.1 μ m～10 μ m, preferred 0.2 μ m～5 μ m, preferred especially 0.4 μ m～4 μ m.Film is thick when being lower than 0.1 μ m, and the anxiety that can not obtain sufficient compensation effect is arranged.In addition, film is thick when surpassing 10 μ m, and the unnecessarily painted anxiety of demonstration of liquid crystal indicator is arranged.
In addition, as the apparent phase difference value in the face of mixing when the normal direction of row oriented liquid crystal layer is observed, refractive index (hereinafter referred to as no) with the refractive index (hereinafter referred to as ne) of the parallel direction of guide shaft and vertical direction in this liquid crystal layer is different, in the time of will being set at the birefraction (Δ n=ne-no) on apparent from the value that ne deducts no, the phase difference value on apparent is set with birefraction on apparent and the thick product (Δ nd) of absolute film.This value can utilize the polarized light optical detecting of ellipsometry etc. easily to obtain.Mixing is generally the scope of 10nm～400nm, preferred 30nm～200nm, preferred especially 50nm～150nm to the monochromatic light of the Δ nd of row oriented liquid crystal layer relative wavelength at 550nm.When Δ nd is lower than 10nm, have to obtain the anxiety that sufficient field angle enlarges effect.In addition, when its during greater than 400nm, liquid crystal indicator, produce unnecessary painted anxiety when having from oblique view.
The concrete configuration condition of mixing in the liquid crystal indicator of the present invention to row oriented liquid crystal layer described, but when configuration condition is described more specifically, use that Fig. 1～3 will be mixed about row oriented liquid crystal layer, the vergence direction of this liquid crystal layer and the pre-tilt direction of liquid crystal cell layer be defined as following respectively.
At first, utilize to constitute angle that the mixing of this optical anisotropic device constitutes to liquid crystal molecule guide shaft and this liquid crystal layer plane of row near interface define respectively comprise mixing to the optical anisotropic device of row oriented liquid crystal layer up and down the time, the angle of liquid crystal molecule guide shaft and above-mentioned liquid crystal layer plane formation is set at the b face at the face that acute side constitutes the angles of 25～90 degree, this angle is set at the c face at the face that acute side constitutes the angle of 0～20 degree.
When the b face of this optical anisotropic device is observed the c face by liquid crystal layer, will for the liquid crystal molecule guide shaft and to the c face of guide shaft to project into the angle that branch constitutes be the direction of acute angle, and the direction parallel with the projection composition is defined as the vergence direction (Fig. 1 and Fig. 2) of mixing to row oriented liquid crystal layer.
Then, common unit interface in liquid crystal cell layer, driving is not parallel and tilt at a certain angle with the relative unit interface of low molecular weight liquid crystal, generally this angle is called pre-tilt angle, but with the guide shaft of the liquid crystal molecule of unit interface with to the angle that the projection composition at the interface of guide shaft constitutes is the direction of acute angle, and the direction parallel with the projection composition of guide shaft is defined as the pre-tilt direction (Fig. 3) of liquid crystal cell layer.
Secondly, to being used for bond layer of the present invention or the light transmission outer coating describes.
It is directed or mix to the directed liquid crystal layer of row or be arranged on bond layer on the polarization element or the material of outer coating to have carried out twisted-nematic as formation; twisted-nematic oriented liquid crystal layer or mixing are to row oriented liquid crystal layer and polarization element relatively; and then light transmission protective film etc. has sufficient adhesive power; as long as be the material that does not damage the optical characteristics of above-mentioned each material; just be not particularly limited, for example can enumerate: crylic acid resin; the methacrylic resin class; epoxy resin; the ethylene-vinyl acetate copolymer class; rubber-like; polyurethanes; glymes and their potpourri class or thermohardening type and/or light-cured type; various reactive materials such as electronics line curing type.These bond layers also comprise the bond layer of the function that has both the protective clear layer (outer coating) that the protection liquid crystal layer is arranged.Need to prove,, also can use bonding agent as above-mentioned bonding agent.
Because reaction (curing) condition of above-mentioned reactive material changes because of the conditions such as composition, viscosity or temperature of reaction that constitute bonding agent, therefore as long as the condition that selection is fit to respectively.For example, the situation of light-cured type is preferably added various known light triggers, shines the light from light sources such as metal halide lamp, high-pressure mercury-vapor lamp, Cooper-Hewitt lamp, xenon lamp, arc lamp, laser, synchrotron radiation light sources, reacts to get final product.As the exposure of per unit area (1 square centimeter), as cumulative exposure, be generally 1～2000mJ, be preferably the scope of 10～1000mJ.But the situation of the absorption energy that the situation that the absorption region of light trigger is significantly different with the spectrum of light source or reactive compound itself have optical source wavelength etc. is not this limit.In these cases, also can adopt suitable photaesthesia agent or the different light trigger more than 2 kinds of absorbing wavelength are mixed and the method for use etc.The accelerating potential of the situation of electronics line curing type is generally 10kV～200kV, is preferably 50kV～100kV.
As mentioned above, the thickness of bond layer and outer coating is generally 1～30 μ m, more preferably 3～10 μ m because of the intensity of the composition that constitutes bonding agent, bonding agent or serviceability temperature etc. are different.In the time of outside this scope, the adhesive strength deficiency, or exist by oozing out etc. the end, not preferred.
In addition, be purpose with the fissility or the erosion of control optical characteristics or control basal plate, these bonding agents also can add various particulates etc. or surface modifier in the scope of not damaging its characteristic.
As above-mentioned particulate, can illustration different particulates with the compound refractive index that constitutes bonding agent, do not damage the transparency and be used to improve antistatic property conductive particle, be used to improve the particulate of mar proof etc., more specifically, can enumerate: microfine silica, fine aluminium oxide, ITO (Indium Tin Oxide) particulate, fine silver particle, various synthetic resin particulates etc.
In addition, as above-mentioned surface modifier, as long as it is good and the curable of bonding agent or the optical characteristics after the curing do not exerted an influence with the intermiscibility of bonding agent, just be not particularly limited, can use for example ionic, the water soluble surfactant active of nonionic, oil soluble surfactant, high molecular surfactant, fluorine is organic metal class surfactant, reactive surfactants etc. such as surfactant, silicone.Especially fluorine such as all-fluoroalkyl compound, per-fluoro polyether compound is organic metal class surfactants such as surfactant or silicone, and is because surface modification effect is big, therefore preferred especially.The addition of surface modifier, the scope of preferred 0.01～10 quality % of bonding agent, more preferably 0.05～5 quality %, more preferably 0.1～3 quality % relatively.Compare with this scope, when addition was very few, additive effect was insufficient, on the other hand, when it is too much, may produces adhesive strength and cross drawbacks such as low.Need to prove that surface modifier can use separately, also can be as required also with multiple.
And, in the scope of not damaging effect of the present invention, can cooperate various adjuvants such as antioxidant, ultraviolet light absorber.
Can be used for polarization element of the present invention and be not particularly limited, can use various polarization elements.As polarization element, can enumerate polyenoid class orientation films such as the polarization element of absorption such as the dichroic substance that for example in hydrophilic macromolecule films such as polyvinyl alcohol film, part dimethoxym ethane polyvinyl alcohol film, the partly-hydrolysed film of ethylene vinyl acetate copolymer class, makes iodine or dichroic dye, the desalination acid treatment thing of Polyvinylchloride etc.Wherein, preferred use stretches the polyvinyl alcohol film and adsorbs the polarization element that orientation has dichroic material (iodine, dyestuff).The thickness of polarization element is not particularly limited, and is generally about 5～50 μ m.
Can make by for example following method of iodine staining polyvinyl alcohol film and the polarization element that carried out uniaxial tension:, be stretched to 3～7 times of original length by dyeing in the aqueous solution that polyvinyl alcohol (PVA) be impregnated in iodine.Also can impregnated in as required in the aqueous solution such as boric acid or potassium iodide.And, can be as required before dyeing that polyvinyl alcohol is thin film dipped in water and wash.By the polyvinyl alcohol film is washed, can clean the dirt or the anticlogging agent (Block ロ Star キ Application グ prevents agent) of polyvinyl alcohol film surface, in addition, expand by making the polyvinyl alcohol film, also have and prevent the unequal uneven effect that dyes.Stretching can be carried out after with iodine staining, on one side also can stretch by an Edge Coloring, can use iodine staining in addition after stretching.Can or stretch in the water-bath in the aqueous solution of boric acid or potassium iodide etc.
Light transmission protective film as a face that is arranged on polarization element; on the preferred optics is isotropic film; can enumerate for example Off ジ Star Network (Fuji Photo Film Co., Ltd.'s goods) or コ ニ カ Star Network Triafol T (TAC) films such as (コ ニ カ ミ ノ Le オ プ ト company goods); ア-ト Application film (JSR company goods); ゼ オ ノ ア film; cycloolefin polymers such as ゼ オ ネ Star Network ス film (Japanese ゼ オ Application company goods); TPX film (Mitsui Chemicals company goods); ア Network リ プ レ Application film (レ of Mitsubishi-ヨ Application company goods) etc.; but the planarity when making ellipsoidal polarizing plate; aspect such as thermotolerance or moisture-proof is considered, preferred Triafol T; cycloolefin polymer.The thickness of light transmission protective film generally is preferably 1～100 μ m, is preferably 5～50 μ m especially.
As the light transmission protective film, can use to the surface implemented hard conating or antireflection handle, anti-ly adhere to, with light diffusion or anti-dazzle light transmission protective film as the processing of purpose.
It is that injured grade to prevent the polaroid surface is the processing that purpose is implemented that hard conating is handled, and the mode that the curing of excellences such as hardness that can produce by for example that acrylic compounds, silicone etc. are suitable ultraviolet curing resin or sliding properties is attached to the surface of this protective film by film waits and forms.It is the processing of implementing being reflected into purpose of extraneous light on polaroid surface to prevent that antireflection is handled, can by form with existing be that the antireflective film of standard waits and realizes.In addition, the anti-adhesion handled to prevent that the driving fit with adjacent layer from being that purpose is implemented.
In addition; it is to be the processing that purpose is implemented to prevent to hinder at the extraneous light of polaroid surface reflection the identification etc. that polaroid sees through light that anti-dazzle is handled, can be by for example with the asperities mode of sandblast mode or embossing finishing mode or cooperate suitable mode such as transparent atomic mode to give the micro concavo-convex structure to the surface of protective film to form.Contained particulate in the formation as above-mentioned surperficial micro concavo-convex structure, can use for example comprise mean grain size be silica, aluminium oxide, titania, zirconium dioxide, tin oxide, indium oxide, cadmium oxide, antimony oxide of 0.5～50 μ m etc., the mineral-type particulate that electric conductivity is arranged, the transparent particulates such as organic based fine particles that comprise crosslinked or uncrosslinked polymkeric substance etc.Form the situation of surperficial micro concavo-convex structure, atomic use amount forms transparent resin 100 weight portions of surperficial micro concavo-convex structure relatively, is generally about 2～50 weight portions preferred 5～25 weight portions.Anti-dazzle photosphere can have both polaroid is seen through the light diffusion layer (visual angle expanded functionality etc.) that light spreads and be used to enlarge visual angle etc.
Need to prove that above-mentioned anti-reflection layer, anti-adhesion layer, light diffusion layer, anti-dazzle photosphere etc. can be arranged on light transmission protective film itself, in addition, as other purposes optical layers, also can be used as the layer setting with the split of light transmission protective film layer.
Below, the manufacture method of ellipsoidal polarizing plate of the present invention is elaborated.
The layer of the polaroid that is obtained by the present invention constitutes and is selected from Fig. 4, following two kinds shown in Figure 5.
(I) light transmission protective film/bond layer 1/ polarization element/bond layer 2/ optical anisotropic device
(II) light transmission protective film/bond layer 1/ polarization element/optical anisotropic device
Manufacture method as polaroid is not particularly limited, as an example, and can be with following method manufacturing.
At first, the manufacture method that constitutes (I) is described.
Constitute (I) and be characterised in that, pass through following each operation at least:
(1) the 1st operation, by bond layer 1 that light transmission protective film and polarization element is bonding, obtain comprising the lamilated body (A) of light transmission protective film/bond layer 1/ polarization element;
(2) the 2nd operations, implementing to form the layer that comprises the liquid crystalline composition that shows positive uniaxiality at least on the directed substrate after the friction treatment, it is directed or mix to row directed to make this layer carry out twisted-nematic, afterwards should the orientation immobilization, form optical anisotropic device, obtain comprising the lamilated body (B) of directed substrate/optical anisotropic device;
(3) the 3rd operations; make the optical anisotropic device side of above-mentioned lamilated body (B) and the polarization element side bonds of above-mentioned lamilated body (A) by bond layer 2; peel off directed substrate afterwards; optical anisotropic device is transferred on the above-mentioned lamilated body (A), obtains comprising the ellipsoidal polarizing plate of light transmission protective film/bond layer 1/ polarization element/bond layer 2/ optical anisotropic device.
Below, the manufacture method by the 1st operation to the 3 operations is described successively.
At first, the manufacture method as the lamilated body (A) of the 1st operation is described.
On polarization element, form bond layer 1, behind bond layer 1 driving fit light transmission protective film and polarization element, make bond layer reaction (curing) as required.Can obtain on the light transmission protective film, passing through bond layer 1 like this by bonding lamilated body (A).
Then, the manufacture method as the lamilated body (B) of the 2nd operation is described.
After implementing friction treatment with cloth etc. on the directed substrate, form the coated film of the liquid crystalline composition that shows positive uniaxiality at least with suitable method, remove as required and desolvate etc., wait the twisted-nematic make liquid crystalline composition directed or mix and finish to the row orientation by heating, the method by the liquid crystalline composition that is suitable for using is with the directed immobilization of liquid crystalline composition.Can obtain having on directed substrate the lamilated body (B) of twisted-nematic is directed or the liquid crystal layer that mixed to the directed immobilization of row like this.
Then, the manufacture method to the 3rd operation describes.
By bond layer 2 that the twisted-nematic of above-mentioned lamilated body (B) is directed or mix after the polarization element side driving fit of row oriented liquid crystal layer (optical anisotropic device) side and above-mentioned lamilated body (A), make bond layer reaction (curing) as required, peel off directed substrate afterwards, with the optical anisotropic device transfer printing on above-mentioned lamilated body (A).
Like this, can obtain ellipsoidal polarizing plate of the present invention by light transmission protective film/bond layer 1/ polarization element/bond layer 2/ optical anisotropic device constitutes.
Need to prove, directed to the twisted-nematic of lamilated body (B) or when mixing lamilated body (A) transfer printing to row oriented liquid crystal layer, as required with this liquid crystal layer transfer printing after on the substrate of other different with directed substrate, can be transferred to lamilated body (A) again.
For the optical anisotropic device layer to the ellipsoidal polarizing plate that obtains carries out surface protection, the light transmission outer coating can be set, or the temporary transient surface protective film of fitting.At this, as the light transmission outer coating, also can be selected by above-mentioned bonding agent.
Then, the manufacture method that constitutes (II) is described.
Constitute (II) and be characterised in that, pass through following each operation at least:
(1) the 1st operation, by bond layer 1 that light transmission protective film and polarization element is bonding, obtain comprising the lamilated body (A) of light transmission protective film/bond layer 1/ polarization element;
(2) the 2nd operations; on the polarization element of above-mentioned lamilated body (A), implement friction treatment; formation comprises the layer of the liquid crystalline composition that shows positive uniaxiality at least; it is directed or mix to row directed to make this layer carry out twisted-nematic; afterwards should the orientation immobilization; form optical anisotropic device, obtain comprising the ellipsoidal polarizing plate of light transmission protective film/bond layer 1/ polarization element/optical anisotropic device.
Below, the manufacture method by the 1st operation to the 2 operations is described successively.
At first, same as the manufacture method and the formation (I) of the lamilated body (A) of the 1st operation.
Manufacture method to the 2nd operation describes.
On the polarization element of the lamilated body of making by the 1st operation (A), implement friction treatment, form the coated film of the liquid crystalline composition that shows positive uniaxiality at least with suitable method, remove as required and desolvate etc., the twisted-nematic that utilizes heating to wait to make liquid crystalline composition is directed or mix and finish to the row orientation, and the method by the liquid crystalline composition that is suitable for using is with the directed immobilization of liquid crystalline composition.Can obtain like this having and comprise that lamilated body (A) goes up ellipsoidal polarizing plate optical anisotropic device, that comprise light transmission protective film/bond layer 1/ polarization element/optical anisotropic device of twisted-nematic is directed or the liquid crystal layer that mixed to the directed immobilization of row.
For the optical anisotropic device layer to the ellipsoidal polarizing plate that obtains carries out surface protection, the light transmission outer coating can be set, or the temporary transient surface protective film of fitting.At this, as the light transmission outer coating, also can be selected by above-mentioned bonding agent.
Need to prove, also comprise following method among the present invention: in the 2nd operation that constitutes (II), on polarization element, utilize directionality to the liquid crystalline composition of polarization element, make this liquid crystalline composition behind the directed such suitable orientation film of row, implement friction in setting, form the layer (Fig. 6) of liquid crystalline composition.
In addition, in the present invention, by the optical anisotropic device layer on adhesive phase or the laminated repeatedly directed substrate of bond layer, thus also can laminated many optical anisotropic device layers.
Be used for the light transmission protective film or the polarization element of the manufacturing of above-mentioned lamilated body (A), preferably implement surface treatment.
Surface treatment as described method, can be enumerated: saponification processing, Corona discharge Treatment, flame treatment, low pressure UV processing, Cement Composite Treated by Plasma etc. as long as use the method that is suitable for light transmission protective film or polarization element.More preferably as the light transmission protective film, used for example situation of Triafol T, preferred saponification is handled, and in addition, has used the situation of cycloolefin polymer, preferred Corona discharge Treatment.In addition, the preferred Corona discharge Treatment of polarization element.
Above-mentioned saponification is handled by it is contacted with aqueous alkali as usual way and is undertaken.As aqueous alkali, can use potassium hydroxide, NaOH etc., as alkali concn, just enough with the thin solution about about 0.1～10 quality %, preferred about 0.5～5 quality %, further preferred about 1～3 quality %.As treatment conditions, just enough under at room temperature 1～60 minute, condition preferred below 30 minutes, further preferred gentleness below 15 minutes.Self-evident, need after the processing to wash fully.
Handle equally with above-mentioned saponification, Corona discharge Treatment can be common condition, for example implements on the isotropic real estate that is connected with adhesive phase.As treatment conditions, because of the kind of the substrate that uses and corona discharge treatment device is different, for example, and as energy density, preferred 1～300Wmin/m
2By implementing Corona discharge Treatment, surface tension increases, but preferably is elevated to more than the 40dyn/cm in advance.
The formation of adhesive phase bond layer can similarly be carried out with the formation of above-mentioned liquid crystalline composition layer, in addition, also can use be provided with silicone etc. easily formed on the suitable substrate of lift-off processing above-mentioned adhesive phase bond layer, the sticking bonding agent of so-called non-carrier.In order to improve the intensity of applying, prevent that the applying of optical anisotropic device and polarization element can be used stacked machine, roller, pressurizer etc. and apply pressurization, heating etc. in generation of the remaining bubble that causes of applying interfacial air etc.
When above-mentioned optical anisotropic device, polarization element and light transmission protective film are fitted, can be overlapping and laminated continuously under the state consistent respectively with the MD direction with the band-like film form.
In addition; their threes are except that above-mentioned manufacture method; can be simultaneously to the both sides of polarization element applying optical anisotropic device and light transmission protective film, also can fit to polarization element by the order of optical anisotropic device, light transmission protective film or by the order of light transmission protective film, optical anisotropic device.
The gross thickness of the ellipsoidal polarizing plate of the present invention that obtains like this changes because of each thickness such as the light transmission protective film that uses, polarization element, bonding agent, optical anisotropic devices, but 150 μ m following, be advisable below the preferred 100 μ m.When gross thickness surpassed 150 μ m, when band-like film was wound into roller with specified length, roller diameter was thick excessively, was difficult to be housed in existing conveying with in the packing container, and in the time of can being housed in the existing transport box, length shortens, and is not preferred.
In addition, can use the further laminated ellipsoidal polarizing plate that at least 1 optical thin film is arranged on ellipsoidal polarizing plate of the present invention.
As optical thin film,, can preferably use the macromolecule oriented film or contain the liquid crystal liquid crystal property film of liquid crystal so long as the transparency and the optical thin film of excellent in uniformity just be not particularly limited.As the macromolecule oriented film, can illustration comprise the single shaft or the twin shaft phase-contrast film of cellulose family, polycarbonate-based, polyacrylate, polysulfones, polyacrylic, polyether sulfone, cyclic olefin family macromolecule etc.Wherein, consider optimization polycarbonate class or cyclic olefin family macromolecule from the homogeneity aspect of cost aspect and film.
In addition, at this said liquid crystal liquid crystal property film that contains liquid crystal,, just be not particularly limited so long as make liquid crystal aligning and can utilize the optically anisotropic film that produces by this orientation state.Can use the known liquid crystal liquid crystal property films such as various optically functional films that for example utilized nematic liquid crystal or disc-like liquid crystal, smectic crystal etc.
The molecule arranging structure of liquid crystal liquid crystal property film can be smectic type, to any molecule arranging structures such as row, twisted-nematic, cholesterol, be respectively even orientation and vertical orientation state near the directed substrate and near the air interface, the high molecular average guide shaft of liquid crystal liquid crystal property can be tilt, the so-called mixing orientation of normal direction from film.
When constituting liquid crystal indicator, can only use 1 at this illustrative optical thin film, also can use many, in addition, also can use both of macromolecule oriented film and liquid crystal liquid crystal property film.
Below, the liquid crystal indicator of using ellipsoidal polarizing plate of the present invention is described.
Liquid crystal indicator of the present invention has above-mentioned ellipsoidal polarizing plate at least.Ellipsoidal polarizing plate of the present invention is being configured under the situation of liquid crystal cells, the optical anisotropic device side of ellipsoidal polarizing plate need be configured in liquid crystal cell side.
Liquid crystal indicator generally is made of parts such as polaroid, liquid crystal cells and phase difference compensation plate as required, reflection horizon, light diffusion layer, backlight, headlight, light control film, light guide plate, prismatic lenses, in the present invention, except that using above-mentioned ellipsoidal polarizing plate this point, be not particularly limited.In addition, the use location of above-mentioned ellipsoidal polarizing plate is not particularly limited, in addition, can be at a place, also can be in many places.
The polaroid that is used for liquid crystal indicator is not particularly limited, and can use by the polaroid that obtains with the same polarization element of the polarization element that is used for above-mentioned ellipsoidal polarizing plate.
As liquid crystal cells, be not particularly limited, can use in having a pair of transparency carrier of electrode clamping that the general liquid crystal cells such as liquid crystal cells of liquid crystal layer are arranged.
As the transparency carrier that constitutes liquid crystal cells,, just be not particularly limited as long as make the material orientation that shows the liquid crystal liquid crystal property that constitutes liquid crystal layer at specific orientation direction.Particularly, substrate itself has the capacity of orientation deficiency of transparency carrier, substrate of the character that makes liquid crystal aligning own, but it is provided with transparency carrier of orientation film with the character that makes liquid crystal aligning etc. etc. and can uses.In addition, the electrode of liquid crystal cells can use known electrode.Usually can be arranged on the face of the transparency carrier that liquid crystal layer connects, use when having the substrate of orientation film, can be arranged between substrate and the orientation film.
Material as showing the liquid crystal liquid crystal property that forms liquid crystal layer is not particularly limited, and can enumerate common various low molecular weight liquid crystal materials, high molecule liquid crystal material and their potpourri that can constitute various liquid crystal cells.In addition, in the scope of not damaging liquid crystal liquid crystal property, also can in these liquid crystal materials, add pigment or chirality agent, non-liquid crystal liquid crystal property material etc.
Liquid crystal cells can have the various inscapes that need for the liquid crystal cells of making variety of way described later except that electrode base board and liquid crystal layer.
As the mode of liquid crystal cells, can enumerate: TN (Twisted Nematic) mode, STN (Super Twisted Nematic) mode, ECB (Electrically ControlledBirefringence) mode, IPS (In-Plane Switching) mode, VA (VerticalAlignment) mode, OCB (Optically Compensated Birefringence) mode, HAN (Hybrid Aligned Nematic) mode, ASM (Axially Symmetric AlignedMicrocell) mode, halftone gray scale (half tone grey scale) mode, farmland (domain) partitioning scheme or utilized ferroelectric liquid crystal, the variety of ways such as display mode of anti-ferroelectricity liquid crystal.
In addition, the type of drive of liquid crystal cells also is not particularly limited, and can be to be used for passive-matrix (passive matrix) mode of STN-LCD etc. and to use any type of drive such as active-matrix (active matrix) mode that TFT (Thin FilmTransistor) electrode, TFD (Thin Film Diode) electrode etc. can moving electrodes, plasma addressed (plasma address) mode.
When ellipsoidal polarizing plate of the present invention is applied to liquid crystal indicator, from the observer, to compare with the liquid crystal cells of liquid crystal indicator, ellipsoidal polarizing plate can be positioned at observer's side (front side), also can be positioned at and observer's opposition side (rear), can also be positioned at the both sides of this liquid crystal cells.
Above-mentioned phase difference compensation plate is can be from the optical thin film that is used for the invention described above suitably selected and use, and can only use 1, also can use many.In addition, also can use the macromolecule oriented film and comprise liquid crystal optical compensating film the two.
As reflective film, be not particularly limited, can illustration aluminium, metal such as silver, gold, chromium, platinum or contain their oxides such as alloy, magnesium oxide, dielectric multilayer film, show their combination of liquid crystal of selecting reflection etc.These reflection horizon can be the planes, can also be curved surfaces.And, the reflection horizon can be to surface configurations such as concaveconvex shape implement processing and have scattered reflection the reflection horizon, have both the reflection horizon of the electrode on the above-mentioned electrode base board that the observer of liquid crystal cells side and opposition side are arranged, by making the reflection horizon the thickness attenuation or implement the Transflective layer that processing such as boring makes a part of light transmission, in addition, can be the reflection horizon that combination has these.
As long as light diffusion layer has the character that makes the incident light isotropy or anisotropically spread, just be not particularly limited.Can enumerate the zone that for example comprises more than 2 kinds, interregionally have the light diffusion layer of refringence or on surface configuration, have concavo-convex light diffusion layer at this.As above-mentionedly comprise the zone more than 2 kinds, at this interregional light diffusion layer with refringence, can be illustrated in the light diffusion layer that particle with refractive index different with matrix is disperseed.Itself also can have tackiness light diffusion layer.
The film of light diffusion layer is thick to be not particularly limited, and is preferably usually below the above 500 μ m of 10 μ m.
In addition, total light penetration of light diffusion layer is preferably more than 50%, is preferably more than 70% especially.And the haze value of light diffusion layer is generally 10～95%, is preferably 40～90%, more preferably 60～90%.
As backlight, headlight, light control film, light guide plate, prismatic lens, be not particularly limited, can use known backlight, headlight, light control film, light guide plate, prismatic lens.
Liquid crystal indicator of the present invention can be set up other member of formation except that above-mentioned member of formation.For example, by chromatic filter being attached on the liquid crystal indicator of the present invention, can make the color liquid crystal display arrangement that can carry out high polychrome of excitation or full color demonstration.
Below, the organic electroluminescence display device and method of manufacturing same (organic EL display) of using ellipsoidal polarizing plate of the present invention is described.
Generally speaking, in the organic EL display, laminated successively transparency electrode, organic luminous layer and metal electrode on transparency carrier form luminophor (organic electroluminescent luminophor).At this, organic luminous layer is the lamilated body of various organic films, known the hole injection layer that for example comprises triphenylamine derivant etc. is arranged and comprise epipolic organic solid such as anthracene luminescent layer lamilated body or comprise this luminescent layer with the lamilated body of the lamilated body of the electron injecting layer of perylene derivant etc. or these hole injection layers, luminescent layer and electron injecting layer etc. have the formation of various combinations.
Organic EL display carries out luminous with following principle, promptly, on transparency electrode and metal electrode, apply voltage, injected hole and electronics on organic luminous layer thus, by these holes and electronics again in conjunction with the energy excitation fluorescent material that produces, the radiating light when fluorescent material that is excited turns back to ground state.The mechanism of combination more midway and general diode are same, and as also it is contemplated that thus, the relative voltage that applies with luminous intensity of electric current shows the strong non-linear property of following rectification.
In organic EL display, in order to take out luminous in the organic luminous layer, must at least one electrode must be transparent, the transparency electrode that will be formed by tin indium oxide transparent conductive bodies such as (ITO) is as anode usually.On the other hand, for electronics being injected easily and improving luminescence efficiency, it is important using the little material of work function on negative electrode, uses metal electrodes such as Mg-Ag, Al-Li usually.
In the organic EL display of this formation, organic luminous layer is that the extremely thin film in the 10nm left and right sides forms by thickness.Therefore, organic luminous layer is also same with transparency electrode, almost completely sees through light.Its result, in non-surperficial incident from transparency carrier when luminous, see through transparency electrode and organic luminous layer and inject to the face side of transparency electrode again, therefore by the light of metal electrode reflection, when visual, as minute surface, can see the display surface of organic EL display from the outside.
In organic EL display, can polaroid be set in the face side of transparency electrode, simultaneously between these transparency electrodes and polaroid polarizer is set, the face side that described organic EL display contains at the organic luminous layer luminous by applying voltage has transparency electrode, while have metal electrode in the rear side of organic luminous layer organic electroluminescent luminophor.
Polarizer and polaroid have the effect that makes the light polarisation that comes from outside incident and with metal electrode reflection, therefore, have the effect of utilizing the minute surface that this polarized light effect can not visual metal electrode from the outside.Especially as long as constitute polarizer and the angle of the direction of polarized light formation of polaroid and polarizer is adjusted into π/4, just can cover the minute surface of metal electrode fully with 1/4 wavelength plate.
That is, the exterior light that incides this organic EL display is passed through polaroid only through the rectilinearly polarized light composition.This rectilinearly polarized light generally becomes elliptically polarized light by polarizer, is that angle that the direction of polarized light of 1/4 wavelength plate and polaroid and polarizer constitutes is π/4 o'clock at polarizer especially, becomes circularly polarized light.
This circularly polarized light sees through transparency carrier, transparency electrode, organic film, reflects by metal electrode, sees through organic film, transparency electrode, transparency carrier again, arrives polarizer again, becomes rectilinearly polarized light.And, because this rectilinearly polarized light is vertical with the direction of polarized light of polaroid, therefore, can not see through polaroid.Consequently, can cover the minute surface of metal electrode fully.
When ellipsoidal polarizing plate of the present invention is applied to organic EL display, as above-mentioned record, prevent outside reflection of light, therefore,, be configured in being advisable of observer's side (front side) of organic EL display from the observer.
[industrial possibility of its application]
Ellipsoidal polarizing plate of the present invention has following advantage: the laminated number of plies that constitutes ellipsoidal polarizing plate is few, even also there is not the generation of peeling off and steeping at the interface under high temperature, super-humid conditions.In addition and since with the bonding process of polarization element in also can fit with the form of band-like film, therefore, bonding process can rationalize, industrial value is very big.
[embodiment]
Below, utilize embodiment that the present invention is specifically described, but the present invention is not limited to these embodiment.
Need to prove that each analytical approach of using among the embodiment is as described below.Need to prove that optical parametrics such as the Δ nd in the present embodiment are set at the value at wavelength 550nm place unless otherwise specified.
(1) mensuration of logarithm viscosity
Use Ubbelohde type viscosity meter, in phenol/tetrachloroethane (60/40 mass ratio) mixed solvent, under 30 ℃, measure.
(2) microscopic examination
Make the directed state of BH2 polarized light microscope observing liquid crystal with Olympus Optical Co Ltd..
(3) analysis of polarized light of liquid-crystal composition layer is measured
Use the made oval thicknessmeter of Co., Ltd.'s ditch buttocks optics industry (エ リ プ リ メ--) (DVA-36VWLD).
(4) the Δ nd of liquid-crystal composition layer, twist angle are measured
Shi Yong Otsuka Electronics Co., Ltd. makes RETS-100.
(5) mixing is to the parametric measurement of row oriented liquid crystal layer
Use prince's measuring equipment Co., Ltd. to make automatic birefringence instrument KOBRA21ADH.
(6) the thick mensuration of film
Use SLOAN company to make SURFACE TEXTURE ANALYSIS SYSTEM Dektak3030ST.In addition, also and use by interference wave and measure (Japanese beam split Co., Ltd. make UV, visible light near infrared spectrometer V-570) and the data of refractive index are obtained the thick method of film.
＜embodiment 1 〉
(making of lamilated body A)
At room temperature TAC film (40 μ m, Fuji Photo Film Co., Ltd. make) be impregnated in the potassium hydroxide aqueous solution of 2 quality % 5 minutes, carry out saponification and handle, in flowing water, make its drying after the flushing.The polyvinyl alcohol (PVA) that has stretched is adsorbed with on the face of polarization element of iodine, is using as fit sapond TAC film of the acrylic-based adhesives of bond layer 1, the fit A of making layer.Total thick 65 μ m that are about of film are can thicker than common film (105 μ m) thinner.
(making of liquid crystalline composition solution B, lamilated body D)
Use terephthalic acid (TPA) 50mmol, 2,6-naphthalenedicarboxylic acid 50mmol, methyl hydroquinone diacetate esters 40mmol, catechol diacetate esters 60mmol and N-methylimidazole 60mg are carrying out polymerization in 12 hours under the nitrogen atmosphere, under 270 ℃.After the resultant of reaction that obtains is dissolved in tetrachloroethane, precipitates again and make with extra care, obtain liquid crystalline polyester (polymkeric substance 1) 14.7g with methyl alcohol.The logarithm viscosity of this liquid crystalline polyester is 0.17 (dl/g), has nematic phase as liquid crystal phase, and isotropic phase-liquid crystal phase transition temperature is more than 250 ℃, and glass transition temperature is 115 ℃.
Then, make biphenyl two phosgene 90mmol, paraphthaloyl chloride 10mmol, S-2-methyl isophthalic acid, 4-butylene glycol 105mmol reaction 20 hours in methylene chloride, under the room temperature drops into reactant liquor it is precipitated again, obtains liquid crystalline polyester (polymkeric substance 2) 12.0g thus.The logarithm viscosity of polymkeric substance 2 is 0.12 (dl/g).
Preparation contains the gamma-butyrolacton solution of the liquid crystalline composition 8 quality % of blended polymer, is set at the liquid crystalline composition solution B.Described blended polymer contains the 19.82g of polymkeric substance 1 and the 0.18g of polymkeric substance 2.
Carry on one side the banded PEEK film of width 650mm, thickness 100 μ m, on one side will be wound with the 150mm φ of rayon cloth friction roller be set at inclination, to make its rotation at a high speed, rub continuously thus, obtain the directed substrate film of 25 ° of rubbing angles.At this, rubbing angle is set at the angle that is rotated counterclockwise direction from the observation rubbing surface time from the MD direction.On above-mentioned directed substrate film, use mould to be coated with machine the liquid crystalline composition solution B is applied drying continuously, carry out 150 ℃ * 10 minutes heat treated afterwards, make the liquid crystalline composition orientation, be cooled to room temperature then, with directed immobilization, obtain the lamilated body D of liquid crystalline composition layer (optical anisotropic device) and PEEK film.
The thickness of the liquid crystalline composition layer of the lamilated body D that obtains is 4 μ m.
Owing to have big birefringence as the PEEK film of directed substrate, therefore, with the optical parametric difficulty of the somatometry of physique liquid crystalline composition layer of lamilated body D, so, transfer printing liquid crystalline composition layer as described below on Triafol T (TAC) film.
Promptly, coating ultraviolet hardening bonding agent on the liquid crystalline composition layer on the PEEK film, so that thickness is 5 μ m, carry out stacked with TAC film (thickness 40 μ m, Fuji Photo Film Co., Ltd. make), after from TAC film side irradiation ultraviolet radiation bonding agent being solidified, peel off the PEEK film, obtain the lamilated body that comprises that liquid crystalline composition layer/bond layer/TAC film constitutes.Utilize Otsuka Electronics Co., Ltd. to make RETS-100 the lamilated body that obtains and carry out parametric measurement, its result carries out the twisted-nematic orientation, and twist angle is 240 degree, and Δ nd is 800nm.
(making of ellipsoidal polarizing plate E)
The thickness that applies commercially available UV curing type bonding agent (UV-3400, Toagosei Co., Ltd make) 5 μ m on the optical anisotropic device of lamilated body D is as bond layer 2, polarization element side of stacked above-mentioned lamilated body A that makes on this utilizes the UV irradiation of about 600mJ that this bond layer 2 is solidified.Thereafter, by peeling off the PEEK film from the lamilated body that PEEK film/optical anisotropic device/bond layer 2/ polarization element/bond layer 1/TAC film becomes one, thus with the optical anisotropic device transfer printing on lamilated body A, obtain comprising the ellipsoidal polarizing plate E of TAC film/bond layer 1/ polarization element/bond layer 2/ optical anisotropic device.The gross thickness of this ellipsoidal polarizing plate E is 75 μ m.
E carries out optical check to this ellipsoidal polarizing plate, and the result does not see spot or hinders equivalent damage.Stick on the glass plate by the optical anisotropic device side of acrylic adhesives this ellipsoidal polarizing plate E, put into the constant temperature and humidity cabinet of 60 ℃ of 90%RH, take out after through 500 hours and observe, the result does not see that fully the generation of peeling off or steeping etc. is unusual.
＜embodiment 2 〉
(preparation of bonding agent)
As the polyurethanes bonding agent, in 100 parts of " EL-436A " (aqueous solution of solid component concentration 35%) of making as Japan モ that becomes the polyester polyol prepolymer of host-ト Application Co., Ltd., 30 parts of " EL-436B " (effective constituent 100% product) that mixing is made as Japan モ of isocyanates hardening agent-ト Application Co., Ltd., further add entry and dilute, so that solid component concentration is 20%.On the other hand, as the polyvinyl alcohol bonding agent, carboxy-modified polyvinyl alcohol (PVA) " Network ラ レ Port バ-Le KL318 " (saponified, 85～90 moles of % of saponification degree of the multipolymer of the about 98:2 of mol ratio of vinyl acetate and sodium itaconate that the preparation Network ラ レ of Co., Ltd. makes, molecular weight about 85,000) 3% aqueous solution.The polyurethanes bonding agent and the polyvinyl alcohol aqueous solution that obtain are mixed with mass ratio 1:1 (with solid constituent mass ratio 20:3), make the mixing bonding agent.
(making of lamilated body F)
The polyvinyl alcohol (PVA) that has stretched is adsorbed with on face of polarization element of iodine, the mixing bonding agent that was prepared into as bond layer 1 with interior coating in back 1 minute in mixing, on its another face to ゼ オ ノ ア film (the thick 40 μ m of film, Japanese ゼ オ Application company make) at 250Wmin/m
2Condition under implement Corona discharge Treatment, after this Corona discharge Treatment, fitted the fit F of making layer with this Corona discharge Treatment face of interior usefulness in 30 seconds.Total thick 65 μ m that are about of film are can thicker than common film (105 μ m) thinner.
(making of ellipsoidal polarizing plate G)
The thickness that applies commercially available UV curing type bonding agent (UV-3400, Toagosei Co., Ltd make) 5 μ m on the optical anisotropic device of the lamilated body D that is made by embodiment 1 is as bond layer 2, the polarization element side of the fit F of layer laminate utilizes the UV irradiation of about 600mJ that this bond layer 2 is solidified in the above.Thereafter, by peeling off the PEEK film from the lamilated body that PEEK film/optical anisotropic device/bond layer 2/ polarization element/bond layer 1/ ゼ オ ノ ア film becomes one, thus with the optical anisotropic device transfer printing on lamilated body F, obtain comprising the ellipsoidal polarizing plate G of ゼ オ ノ ア film/bond layer 1/ polarization element/bond layer 2/ optical anisotropic device.The gross thickness of this ellipsoidal polarizing plate G is 75 μ m.
G carries out optical check to this ellipsoidal polarizing plate, and the result does not see spot or hinders equivalent damage.Stick on the glass plate by the optical anisotropic device side of acrylic adhesives this ellipsoidal polarizing plate G, put into the constant temperature and humidity cabinet of 60 ℃ of 90%RH, take out after through 500 hours and observe, the result does not see that fully the generation of peeling off or steeping etc. is unusual.
＜embodiment 3 〉
(making of ellipsoidal polarizing plate H)
Polarization element side at the lamilated body F that makes by embodiment 2, use mould to be coated with the solution that machine will change the liquid crystalline composition that the mixture ratio by synthetic polymkeric substance 1 of embodiment 1 and polymkeric substance 2 is prepared into and apply drying continuously, carry out 150 ℃ * 10 minutes heat treated afterwards, make the liquid crystalline composition orientation, be cooled to room temperature then, with directed immobilization, obtain comprising the ellipsoidal polarizing plate H of ゼ オ ノ ア film/bond layer 1/ polarization element/optical anisotropic device.The gross thickness of this ellipsoidal polarizing plate H is 70 μ m.
This optical anisotropic device layer carries out the twisted-nematic orientation, and twist angle is-65 degree, and Δ nd is 190nm.(the made DVA-36VWLD of Co., Ltd.'s ditch buttocks optics industry) carries out analysis of polarized light to this ellipsoidal polarizing plate H with oval thicknessmeter, and the result can confirm that the ellipticity at wavelength 550nm place is 0.94, for having the polaroid of good circularly polarized light characteristic.
H carries out optical check to this ellipsoidal polarizing plate, and the result does not see spot or hinders equivalent damage.Stick on the glass plate by the optical anisotropic device side of acrylic adhesives this ellipsoidal polarizing plate H, put into the constant temperature and humidity cabinet of 60 ℃ of 90%RH, take out after through 500 hours and observe, the result does not see that fully the generation of peeling off or steeping etc. is unusual.
＜embodiment 4 〉
(making of lamilated body J)
On the polarization element of the lamilated body F that makes by embodiment 2, carry on one side, use on one side mould to be coated with machine the 5 quality % solution (solvent is the mixed solvent of the mass ratio 1:1 of water and isopropyl alcohol) of alkyl-modified polyvinyl alcohol (PVA) (PVA, the Network ラ レ of Co., Ltd. make, PVA-117H) are applied drying continuously, under 130 ℃, carry out heat treated, obtain comprising the lamilated body J of ゼ オ ノ ア film/bond layer 1/ polarization element/PVA orientation film.
(making of ellipsoidal polarizing plate K)
On the PVA of lamilated body J orientation film, use mould to be coated with machine and will apply drying continuously by the liquid crystalline composition solution B of embodiment 1 preparation, carry out 150 ℃ * 10 minutes heat treated afterwards, make the liquid crystalline composition orientation, be cooled to room temperature then, with directed immobilization, obtain comprising the ellipsoidal polarizing plate K of ゼ オ ノ ア film/bond layer 1/ polarization element/PVA orientation film/optical anisotropic device.The gross thickness of this ellipsoidal polarizing plate K is 73 μ m.
K carries out optical check to this ellipsoidal polarizing plate, and the result does not see spot or hinders equivalent damage.Stick on the glass plate by the optical anisotropic device side of acrylic adhesives this ellipsoidal polarizing plate K, put into the constant temperature and humidity cabinet of 60 ℃ of 90%RH, take out after through 500 hours and observe, the result does not see that fully the generation of peeling off or steeping etc. is unusual.
＜comparative example 1 〉
(making of lamilated body L)
The optical anisotropic device side transfer printing of the lamilated body D that will be made by embodiment 1 by the ultraviolet hardening bonding agent is on Triafol T (TAC) film (40 μ m).That is, adhesive-applying on the optical anisotropic device on the PEEK film is so that thickness is 5 μ m, carry out stacked with the TAC film, after from TAC film side irradiation ultraviolet radiation bonding agent being solidified, peel off the PEEK film, obtain lamilated body L (optical anisotropic device/adhesive layer/TAC film).
(making of ellipsoidal polarizing plate N)
Making the polyvinyl alcohol (PVA) that has stretched be adsorbed with the both sides of the polarization element of iodine, use acrylic-based adhesives to make the sapond TAC film adhered, make polaroid M.
Be fitted on this polaroid M by the optical anisotropic device side of acrylic adhesives, make ellipsoidal polarizing plate N lamilated body L.This ellipsoidal polarizing plate N is very thick, and thickness is about 200 μ m, and coiling thickness increases, and therefore, the treated length in the single job is compared with the making of the ellipsoidal polarizing plate of embodiment 1～4, has to shorten.
Apply acrylic adhesives on the TAC film of the optical anisotropic device side of ellipsoidal polarizing plate N, be fitted on the glass plate, carry out test similarly to Example 1, the result sees peeling off of 0.5mm after through 500 hours in the end.
＜embodiment 5 〉
The ellipsoidal polarizing plate E that use is obtained by embodiment 1 is with the transmissive liquid crystal display device of configuration making STN type shown in Figure 7.At this, in the present embodiment, from polarization element 4 side direction liquid crystal cells 8 sides, to be rotated counterclockwise direction setting for+, the direction setting that turns clockwise is for-producing device and experimentize, but at first subsidiary saying, from polarization element 4 to liquid crystal cells 8 sides, with turn clockwise direction setting for+, be rotated counterclockwise direction setting for-carry out same experiment, also obtain same result.
Fig. 8 represents the relation of the angle θ 1～θ 5 in each member of formation of above-mentioned STN type transmissive liquid crystal display device.
Among Fig. 8, the orientation direction 82 on the orientation direction 81 on the face of ellipsoidal polarizing plate 1 side of the liquid crystal layer in the liquid crystal cells 8 and the face of polaroid 9 sides constitutes angle θ 1.The direction 62 of the orientation axes on the direction 61 of the orientation axes on the face of polarization element 4 sides of optical anisotropic device 6 and the face of liquid crystal cells 8 sides constitutes angle θ 2.In addition, the direction 61 of the orientation axes on the face of polarization element 4 sides of the absorption axes 41 of polarization element 4 and optical anisotropic device 6 constitutes angle θ 3, and the orientation direction 81 on the face of polarization element 4 sides of the liquid crystal layer in the absorption axes 41 of polarization element 4 and the liquid crystal cells 8 constitutes angle θ 4.In addition, the absorption axes 41 of the orientation axes 91 of polaroid 9 and polarization element 4 constitutes angle θ 5.
As liquid crystal material, use ZLI-2293, twist degree into θ 1=+240.In addition, the product Δ nd of the thickness d of the refractive index anisotropy Δ n of the liquid crystal material in the liquid crystal cells 8 and liquid crystal layer is roughly 830nm.
The method making that optical anisotropic device 6 usefulness are same with the optical anisotropic device of embodiment 1.The Δ nd of optical anisotropic device 6 is roughly 800nm, and twist angle is a θ 2=-240 degree.At this moment, from the angle initialization of the orientation axes 61 of absorption axes 41 on the face of the polaroid side of optical anisotropic device 6 of polarization element 4 is θ 3=+45 degree, is θ 4=+135 degree from the angle initialization of the orientation direction 81 of absorption axes 41 on the face of the polaroid side of liquid crystal layer 8 of polarization element 4.
10 sides of backlight (downside of figure) configuration polaroid 9 (about 100 μ m of thickness at liquid crystal cells 8; Sumitomo Chemical Co makes SQW-062).Is θ 5=+90 degree from the absorption axes 41 of polarization element 4 to the angle initialization of the orientation axes 91 of polaroid 9.
The bonding coat of configuration normally transparent between ellipsoidal polarizing plate 1 and liquid crystal cells 8 and polaroid 9.
By driving circuit (not shown) above-mentioned liquid crystal indicator is applied driving voltage (1/240 load drives with the suitableeest bias voltage), the optical characteristics of (transmission mode) when research configuration backlight 10 and illumination, result can become clear and the demonstration of high-contrast.Especially learn in transmission mode, to have good field angle characteristic.
＜embodiment 6 〉
To be set at ellipsoidal polarizing plate 1 by the ellipsoidal polarizing plate H that embodiment 3 makes, on the transparency carrier 12 of the organic EL of commercially available OLED display 11, fit, make organic EL display by acrylic adhesives by Fig. 9 definition.Its result learns, compares with the situation that does not dispose ellipsoidal polarizing plate of the present invention, and ambient light line reflection effect is significantly prevented in performance, obtains the organic EL display of visibility excellence.
＜embodiment 7 〉
(making of liquid crystal liquid crystal property Polymer Solution C, lamilated body P)
Use 6-hydroxyl-2-naphthoic acid 100mmol, terephthalic acid (TPA) 100mmol, chlorohydroquinone 50mmol, tert-butyl catechol 50mmol and acetic anhydride 600mmol, carrying out 2 hours acetylization reactions under the nitrogen atmosphere, under 140 ℃.Polymerization in 2 hours is carried out in continuation under 270 ℃, carry out polymerization in 2 hours under 280 ℃, carries out polymerization in 2 hours under 300 ℃.Then, the resultant of reaction that obtains is dissolved in tetrachloroethane after, precipitate again and refining with methyl alcohol, obtain liquid crystalline polyester (polymkeric substance 1) 40.0g.The logarithm viscosity of this liquid crystalline polyester is 0.35 (dl/g), has nematic phase as liquid crystal phase, and isotropic phase-liquid crystal phase transition temperature is more than 300 ℃, and glass transition temperature is 135 ℃.
The gamma-butyrolacton solution (liquid crystal liquid crystal property Polymer Solution C) of 8 quality % of preparation polymkeric substance 1.
Carry on one side the banded PEEK film of width 650mm, thickness 100 μ m, on one side will be wound with the 150mm φ of rayon cloth friction roller be set at inclination, to make its rotation at a high speed, rub continuously thus, obtain the directed substrate film of 45 ° of rubbing angles.At this, rubbing angle is set at the angle that is rotated counterclockwise direction from the observation rubbing surface time from the MD direction.On above-mentioned directed substrate film, use mould to be coated with machine liquid crystal liquid crystal property Polymer Solution C is applied drying continuously, carry out 150 ℃ * 10 minutes heat treated afterwards, make liquid crystal liquid crystal property macromolecule orientation, be cooled to room temperature then, with directed immobilization, obtain comprising the lamilated body P of liquid crystal liquid crystal property macromolecule layer and PEEK film.The thickness of the lamilated body P that obtains is 0.6 μ m.
Owing to have big birefringence as the PEEK film of directed substrate, therefore, with the optical parametric difficulty of the somatometry of physique liquid crystal liquid crystal property macromolecule layer of lamilated body P, so, the macromolecule layer of transfer printing liquid crystal liquid crystal property as described below on Triafol T (TAC) film.
Promptly, the ultraviolet hardening bonding agent that coated optics is used on the liquid crystal liquid crystal property macromolecule layer on the PEEK film, so that thickness is 5 μ m, carry out stacked with TAC film (thickness 40 μ m, Fuji Photo Film Co., Ltd. make), after from TAC film side irradiation ultraviolet radiation bonding agent being solidified, peel off the PEEK film, obtain comprising the lamilated body of liquid crystal liquid crystal property macromolecule layer/bond layer/TAC film.Utilize prince's instrumentation machine Co., Ltd. to make automatic birefringence instrument KOBRA21ADH to the lamilated body that obtains and carry out parametric measurement, this liquid crystal liquid crystal property macromolecule layer forms and mixes to the row directive texture as a result, and the Δ nd of this layer is 90nm, and average slope angle is 28 degree.
(making of ellipsoidal polarizing plate Q)
Go up the thickness of the commercially available UV curing type bonding agent of coating (UV-3400, Toagosei Co., Ltd make) 5 μ m as bond layer 2 at the liquid crystal liquid crystal property macromolecule layer (optical anisotropic device) of lamilated body P, polarization element side of stacked lamilated body A that is made by embodiment 1 on this utilizes the UV irradiation of about 600mJ to make this bond layer 2 curing.Thereafter, by peeling off the PEEK film from the lamilated body that PEEK film/optical anisotropic device/bond layer 2/ polarization element/bond layer 1/TAC film becomes one, thus with the optical anisotropic device transfer printing on lamilated body A, obtain comprising the ellipsoidal polarizing plate Q of TAC film/bond layer 1/ polarization element/bond layer 2/ optical anisotropic device.The gross thickness of this ellipsoidal polarizing plate Q is 75 μ m.
Q carries out optical check to this ellipsoidal polarizing plate, and the result does not see spot or hinders equivalent damage.Stick on the glass plate by the optical anisotropic device side of acrylic adhesives this ellipsoidal polarizing plate Q, put into the constant temperature and humidity cabinet of 60 ℃ of 90%RH, take out after through 500 hours and observe, the result does not see that fully the generation of peeling off or steeping etc. is unusual.
＜embodiment 8 〉
(making of ellipsoidal polarizing plate R)
The thickness that applies commercially available UV curing type bonding agent (UV-3400, Toagosei Co., Ltd make) 5 μ m on the optical anisotropic device of the lamilated body P that is made by embodiment 7 is as bond layer 2, the polarization element side of the stacked in the above lamilated body F that is made by embodiment 2 utilizes the UV irradiation of about 600mJ to make this bond layer 2 curing.Thereafter, by peeling off the PEEK film from the lamilated body that PEEK film/optical anisotropic device/bond layer 2/ polarization element/bonding agent 1/ ゼ オ ノ ア film becomes one, thus with the optical anisotropic device transfer printing on lamilated body F, obtain comprising the ellipsoidal polarizing plate R of ゼ オ ノ ア film/bond layer 1/ polarization element/bond layer 2/ optical anisotropic device.The gross thickness of this ellipsoidal polarizing plate R is 75 μ m.
R carries out optical check to this ellipsoidal polarizing plate, and the result does not see spot or hinders equivalent damage.Stick on the glass plate by the optical anisotropic device side of acrylic adhesives this ellipsoidal polarizing plate R, put into the constant temperature and humidity cabinet of 60 ℃ of 90%RH, take out after through 500 hours and observe, the result does not see that fully the generation of peeling off or steeping etc. is unusual.
＜embodiment 9 〉
(making of ellipsoidal polarizing plate S)
Carry on one side the lamilated body F that makes by embodiment 2, on one side will be wound with the 150mm φ of rayon cloth friction roller be set at inclination, to make its rotation at a high speed, rub continuously thus, obtain the directed substrate film of 45 ° of rubbing angles.At this, rubbing angle is set at the angle that is rotated counterclockwise direction from the observation rubbing surface time from the MD direction.Use mould to be coated with liquid crystal liquid crystal property Polymer Solution C that machine will be made by embodiment 7 and apply drying continuously, carry out 150 ℃ * 10 minutes heat treated afterwards, make liquid crystal liquid crystal property macromolecule orientation with the coating speed different with embodiment 7.Be cooled to room temperature then,, obtain having the ellipsoidal polarizing plate S (ゼ オ ノ ア film/bond layer 1/ polarization element/optical anisotropic device) of the optical anisotropic device that comprises the liquid crystal liquid crystal property macromolecule layer directed immobilization.The gross thickness of this ellipsoidal polarizing plate S is 70 μ m.
Similarly to Example 7, only with the transfer printing of liquid crystal liquid crystal property macromolecule layer on the TAC film, measure optical parametric, this high molecule liquid crystal layer forms and mixes to the row directive texture as a result, the Δ nd of high molecule liquid crystal layer is 90nm, average slope angle is 28 degree.
S carries out optical check to this ellipsoidal polarizing plate, and the result does not see spot or hinders equivalent damage.Stick on the glass plate by the optical anisotropic device side of acrylic adhesives this ellipsoidal polarizing plate S, put into the constant temperature and humidity cabinet of 60 ℃ of 90%RH, take out after through 500 hours and observe, the result does not see that fully the generation of peeling off or steeping etc. is unusual.
＜embodiment 10 〉
(making of ellipsoidal polarizing plate T)
Carry on one side the lamilated body J that makes by embodiment 4, on one side will be wound with the 150mm φ of rayon cloth friction roller be set at inclination, make PVA orientation film face with high speed rotating, rub continuously thus, obtain the directed substrate film of 45 ° of rubbing angles.At this, rubbing angle is set at the angle that is rotated counterclockwise direction from the observation rubbing surface time from the MD direction.Use mould to be coated with machine and will apply drying similarly to Example 9 continuously, carry out 150 ℃ * 10 minutes heat treated afterwards, make liquid crystal liquid crystal property macromolecule orientation by the liquid crystal liquid crystal property Polymer Solution C that embodiment 7 makes.Be cooled to room temperature then,, obtain having the ellipsoidal polarizing plate T (ゼ オ ノ ア film/bond layer 1/ polarization element/PVA orientation film/optical anisotropic device) of the optical anisotropic device that comprises the liquid crystal liquid crystal property macromolecule layer directed immobilization.The gross thickness of this ellipsoidal polarizing plate T is 73 μ m.
T carries out optical check to this ellipsoidal polarizing plate, and the result does not see spot or hinders equivalent damage.Stick on the glass plate by the optical anisotropic device side of acrylic adhesives this ellipsoidal polarizing plate T, put into the constant temperature and humidity cabinet of 60 ℃ of 90%RH, take out after through 500 hours and observe, the result does not see that fully the generation of peeling off or steeping etc. is unusual.
＜comparative example 2 〉
(making of polaroid U)
Making the polyvinyl alcohol (PVA) that has stretched be adsorbed with the both sides of the polarization element of iodine, use acrylic-based adhesives to make the sapond TAC film adhered, make polaroid U.
(making of lamilated body V)
The optical anisotropic device transfer printing of the lamilated body P that will be made by embodiment 7 by the ultraviolet hardening bonding agent is on Triafol T (TAC) film (40 μ m).That is, adhesive-applying on the liquid crystal liquid crystal property macromolecule layer on the PEEK film is so that thickness is 5 μ m, carry out stacked with the TAC film, after from TAC film side irradiation ultraviolet radiation bonding agent being solidified, peel off the PEEK film, obtain lamilated body V (optical anisotropic device/adhesive layer/TAC film).
(making of ellipsoidal polarizing plate W)
Be fitted on this polaroid U by the optical anisotropic device side of acrylic adhesives, make ellipsoidal polarizing plate W lamilated body V.This ellipsoidal polarizing plate W is very thick, and thickness is about 200 μ m, and coiling thickness increases, and therefore, the treated length in the single job is compared with the making of the ellipsoidal polarizing plate of embodiment 7～10, has to shorten.
At the optical anisotropic device side of ellipsoidal polarizing plate W coating acrylic adhesives, stick on the glass plate, carry out test similarly to Example 7, the result sees peeling off of 0.5mm after through 500 hours in the end.
＜embodiment 11 〉
The ellipsoidal polarizing plate Q that use is obtained by embodiment 7 makes transmissive liquid crystal display device with configuration shown in Figure 10.
The liquid crystal cells 8 that uses uses the ZLI-1695 (manufacturing of Merck company) as liquid crystal material to carry out even orientation.Thickness of liquid crystal layer is 4.9 μ m, and the pre-tilt angle at substrate two interfaces of liquid crystal layer is 2 degree, and the Δ nd of liquid crystal cells is roughly 320nm.
Observer's side (upside of figure) configuration polaroid 9 (about 100 μ m of thickness at liquid crystal cells 8; Sumitomo Chemical Co makes SQW-062), configuration comprises the phase difference compensation plate 16 of the polycarbonate film that carried out uniaxial tension (Japanese ゼ オ Application Co., Ltd. makes: Δ nd is roughly 140nm) between polaroid 9 and liquid crystal cells 8.
In addition, the backlight side (downside of figure) at liquid crystal cells disposes the ellipsoidal polarizing plate Q (being set at 1 in Figure 10) that is obtained by embodiment 7.
The pre-tilt direction at two interfaces of the slow axis of the absorption axes of polaroid 9 and polarization element 4, phase difference compensation plate 16, liquid crystal cells 8, the vergence direction of optical anisotropic device 6 are configured under the described condition of Figure 11.Rear side at this ellipsoidal polarizing plate 1 is provided with backlight 10.
In above-mentioned liquid crystal indicator, apply driving voltage by driving circuit (not shown) from 0V to 5V, the optical characteristics of (transmission mode) during 10 illuminations of research configuration backlight, the result learns, can obtain the few characteristic of field angle dependence with bright and high-contrast.
Claims (24)
1, a kind of ellipsoidal polarizing plate; its laminated successively light transmission protective film, polarization element and optical anisotropic device; it is characterized in that, this optical anisotropic device contain make the liquid crystalline composition that shows positive uniaxiality at least under mesomorphic state, carry out twisted-nematic directed or mix to the directed back of row, should the immobilized liquid crystal layer of orientation.
2, ellipsoidal polarizing plate as claimed in claim 1 is characterized in that, light transmission protective film, polarization element and optical anisotropic device are the band-like film form.
3, ellipsoidal polarizing plate as claimed in claim 1 or 2, it is characterized in that, the twist angle of twisted-nematic oriented liquid crystal layer is 5 °～400 ° scope, and the product (Δ nd) of the refractive index anisotropy Δ n of twisted-nematic oriented liquid crystal layer and the thickness d of liquid crystal layer is in the scope of 50nm～1500nm.
4, ellipsoidal polarizing plate as claimed in claim 1 or 2, it is characterized in that, mixing is 5 °～45 ° to the average slope angle of row oriented liquid crystal layer, and the product (Δ nd) of the refractive index anisotropy Δ n at wavelength 550nm place and the thickness d of above-mentioned optically anisotropic body is in the scope of 30nm～200nm.
As each described ellipsoidal polarizing plate in the claim 1～4, it is characterized in that 5, the light transmission protective film is a Triafol T.
As each described ellipsoidal polarizing plate in the claim 1～5, it is characterized in that 6, the light transmission protective film is a cycloolefin polymer.
As each described ellipsoidal polarizing plate in the claim 1～6, it is characterized in that 7, the thickness of ellipsoidal polarizing plate is below the 150 μ m.
8, as each described ellipsoidal polarizing plate in the claim 1～7, it is characterized in that, between polarization element and optical anisotropic device, be provided with liquid crystalline composition and form to the directed orientation film of row.
9, as each described ellipsoidal polarizing plate in the claim 1～8, it is characterized in that, be provided with the light transmission outer coating on surface with the polarization element opposition side of optical anisotropic device.
10, ellipsoidal polarizing plate as claimed in claim 9 is characterized in that, the light transmission outer coating comprises acrylic resin.
As each described ellipsoidal polarizing plate in the claim 1～10, it is characterized in that 11, the orientation direction and the MD direction of the liquid crystal molecule of arbitrary near interface at interface, twisted-nematic oriented liquid crystal layer both sides are not parallel.
12, a kind of ellipsoidal polarizing plate is characterized in that, further laminated at least 1 optical thin film on each described ellipsoidal polarizing plate in claim 1～11.
13, ellipsoidal polarizing plate as claimed in claim 12 is characterized in that, optical thin film is the macromolecule oriented film.
14, ellipsoidal polarizing plate as claimed in claim 12 is characterized in that, optical thin film is the liquid crystal liquid crystal property film.
15, a kind of manufacture method of ellipsoidal polarizing plate is characterized in that, passes through following each operation at least:
(1) the 1st operation, by bond layer 1 that light transmission protective film and polarization element is bonding, obtain comprising the lamilated body (A) of light transmission protective film/bond layer 1/ polarization element;
(2) the 2nd operations, implementing to form the layer that comprises the liquid crystalline composition that shows positive uniaxiality at least on the directed substrate of friction treatment, it is directed or mix to row directed to make this layer carry out twisted-nematic, afterwards should the orientation immobilization, form optical anisotropic device, obtain comprising the lamilated body (B) of directed substrate/optical anisotropic device;
(3) the 3rd operations; make the optical anisotropic device side of above-mentioned lamilated body (B) and the polarization element side bonds of above-mentioned lamilated body (A) by bond layer 2; peel off directed substrate afterwards; optical anisotropic device is transferred on the above-mentioned lamilated body (A), obtains comprising the ellipsoidal polarizing plate of light transmission protective film/bond layer 1/ polarization element/bond layer 2/ optical anisotropic device.
16, a kind of manufacture method of ellipsoidal polarizing plate is characterized in that, passes through following each operation at least:
(1) the 1st operation, by bond layer 1 that light transmission protective film and polarization element is bonding, obtain comprising the lamilated body (A) of light transmission protective film/bond layer 1/ polarization element;
(2) the 2nd operations; friction treatment is implemented on polarization element surface at above-mentioned lamilated body (A); formation comprises the layer of the liquid crystalline composition that shows positive uniaxiality at least; it is directed or mix to row directed to make this layer carry out twisted-nematic; afterwards should the orientation immobilization; form optical anisotropic device, obtain comprising the ellipsoidal polarizing plate of light transmission protective film/bond layer 1/ polarization element/optical anisotropic device.
17, the manufacture method of ellipsoidal polarizing plate as claimed in claim 16 is characterized in that, in claim 16, the liquid crystalline composition that shows positive uniaxiality at least is set on polarization element forms to the directed orientation film of row, implements friction treatment then.
As the manufacture method of claim 15 or 16 described ellipsoidal polarizing plates, it is characterized in that 18, the light transmission protective film is Triafol T or cycloolefin polymer.
19, as the manufacture method of claim 15 or 16 described ellipsoidal polarizing plates, it is characterized in that, the light transmission protective film has been carried out surface treatment.
As the manufacture method of claim 15 or 16 described ellipsoidal polarizing plates, it is characterized in that 20, surface treatment is saponification processing or Corona discharge Treatment.
21, as the manufacture method of claim 15 or 16 described ellipsoidal polarizing plates, it is characterized in that, polarization element is carried out surface treatment.
22, the manufacture method of ellipsoidal polarizing plate as claimed in claim 21 is characterized in that, surface treatment is a Corona discharge Treatment.
23, a kind of liquid crystal indicator is characterized in that, disposes each described ellipsoidal polarizing plate in the claim 1～14 on the face of at least one side of liquid crystal cells.
24, a kind of el display device is characterized in that, possesses each described ellipsoidal polarizing plate in the claim 1～14.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006149819A JP2007322498A (en) | 2006-05-30 | 2006-05-30 | Elliptically polarizing plate, method of manufacturing elliptically polarizing plate, liquid crystal display device and electroluminescence display device |
| JP149819/2006 | 2006-05-30 | ||
| JP153247/2006 | 2006-06-01 | ||
| JP2006153247A JP2007322778A (en) | 2006-06-01 | 2006-06-01 | Elliptically polarizing plate, method of manufacturing elliptically polarizing plate and liquid crystal display device |
| PCT/JP2007/060562 WO2007142037A1 (en) | 2006-05-30 | 2007-05-17 | Elliptical polarizing plate, method for producing elliptical polarizing plate, liquid crystal display, and electroluminescent display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101454699A true CN101454699A (en) | 2009-06-10 |
| CN101454699B CN101454699B (en) | 2010-11-10 |
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ID=38801298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780019909.XA Expired - Fee Related CN101454699B (en) | 2006-05-30 | 2007-05-17 | Elliptically polarizing plate, method of manufacturing elliptically polarizing plate and liquid crystal display device |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR101397301B1 (en) |
| CN (1) | CN101454699B (en) |
| TW (1) | TW200811489A (en) |
| WO (1) | WO2007142037A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104412137A (en) * | 2012-06-29 | 2015-03-11 | 日东电工株式会社 | Circular polarizing plate and organic electroluminescence panel |
| CN105676318A (en) * | 2014-12-08 | 2016-06-15 | 三星电子株式会社 | Antireflection film and organic light emitting device provided with the same |
| CN105679952A (en) * | 2014-12-08 | 2016-06-15 | 三星电子株式会社 | Antireflection film and organic light emitting device including the same |
| CN113874765A (en) * | 2019-05-28 | 2021-12-31 | 东洋纺株式会社 | Laminate for transferring circularly polarizing element and method for producing optical article using same |
| WO2022156327A1 (en) * | 2021-01-25 | 2022-07-28 | 京东方科技集团股份有限公司 | Display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012073429A (en) * | 2010-09-29 | 2012-04-12 | Fujifilm Corp | Polarizing plate, liquid crystal display device using the same and moisture-heat resistant polarizing plate protection film |
| JP5582947B2 (en) * | 2010-09-29 | 2014-09-03 | 富士フイルム株式会社 | Polarizing plate, liquid crystal display using the same, and protective film for moisture and heat resistant polarizing plate |
| KR102515564B1 (en) * | 2016-05-19 | 2023-03-28 | 삼성전자주식회사 | Organic light emitting diode device |
| JP7055425B2 (en) | 2017-01-25 | 2022-04-18 | エルジー・ケム・リミテッド | Anti-reflection optical filter and organic light emitting device |
| KR102442852B1 (en) * | 2018-09-04 | 2022-09-14 | 주식회사 엘지화학 | Transmission Variable Device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3432657B2 (en) * | 1995-12-25 | 2003-08-04 | 新日本石油株式会社 | Manufacturing method of compensator for liquid crystal display element |
| JP2001051119A (en) * | 1999-08-16 | 2001-02-23 | Nippon Mitsubishi Oil Corp | Optical anistropic element and liquid crystal display element |
| JP2001183525A (en) * | 1999-12-22 | 2001-07-06 | Nippon Petrochem Co Ltd | Method of producing elliptically polarizing plate |
| JP4316131B2 (en) * | 2000-11-21 | 2009-08-19 | 富士フイルム株式会社 | Method for producing optical compensation film |
| JP2005062669A (en) * | 2003-08-19 | 2005-03-10 | Fuji Photo Film Co Ltd | Optical anisotropic layer, retardation plate using the same, elliptic polarization plate and liquid crystal display device |
| JP2004309904A (en) * | 2003-04-09 | 2004-11-04 | Nitto Denko Corp | Circular polarization plate, luminance improvement film, and image display device |
| JP2004334168A (en) * | 2003-04-16 | 2004-11-25 | Sumitomo Chem Co Ltd | Polarizing plate and its manufacturing method |
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2007
- 2007-05-17 KR KR1020087032072A patent/KR101397301B1/en not_active IP Right Cessation
- 2007-05-17 CN CN200780019909.XA patent/CN101454699B/en not_active Expired - Fee Related
- 2007-05-17 WO PCT/JP2007/060562 patent/WO2007142037A1/en active Application Filing
- 2007-05-29 TW TW096119094A patent/TW200811489A/en unknown
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| CN104412137A (en) * | 2012-06-29 | 2015-03-11 | 日东电工株式会社 | Circular polarizing plate and organic electroluminescence panel |
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| CN104412137B (en) * | 2012-06-29 | 2017-06-06 | 日东电工株式会社 | circularly polarizing plate and organic EL panel |
| CN105676318A (en) * | 2014-12-08 | 2016-06-15 | 三星电子株式会社 | Antireflection film and organic light emitting device provided with the same |
| CN105679952A (en) * | 2014-12-08 | 2016-06-15 | 三星电子株式会社 | Antireflection film and organic light emitting device including the same |
| US9766384B2 (en) | 2014-12-08 | 2017-09-19 | Samsung Electronics Co., Ltd. | Antireflection film and organic light emitting device provided with the same |
| CN105676318B (en) * | 2014-12-08 | 2018-06-05 | 三星电子株式会社 | Anti-reflective film and the organic luminescent device for including it |
| CN113874765A (en) * | 2019-05-28 | 2021-12-31 | 东洋纺株式会社 | Laminate for transferring circularly polarizing element and method for producing optical article using same |
| CN113874765B (en) * | 2019-05-28 | 2024-04-30 | 东洋纺株式会社 | Laminate for transferring circularly polarizing element and method for producing optical article using same |
| WO2022156327A1 (en) * | 2021-01-25 | 2022-07-28 | 京东方科技集团股份有限公司 | Display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200811489A (en) | 2008-03-01 |
| CN101454699B (en) | 2010-11-10 |
| KR20090027225A (en) | 2009-03-16 |
| KR101397301B1 (en) | 2014-05-22 |
| WO2007142037A1 (en) | 2007-12-13 |
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