TW201106060A - Liquid crystal display apparatus - Google Patents

Abstract

Provided is a liquid crystal display apparatus in which a viewing angle is increased, a front contrast is improved and a color shift, when viewed from an oblique direction, is prevented. A liquid crystal display apparatus (1) comprises a first light polarizer (2), a first optical compensation layer (3), a liquid crystal cell (4), a second optical compensation layer (5), and a second light polarizer (6), arranged in this order. The first and second optical compensation layers (3, 5) satisfy the following formulae (1) to (3), and the liquid crystal molecules in the liquid crystal cell (4) are oriented in the thickness direction of the liquid crystal cell (4) at a black display; n x 1 > nz1 > ny1 (1) nx 2 = ny2 > nz2 (2) DSP(Ro1) > 1 > DSP(Rth2) (3)

Description

201106060 VI. Description of the Invention: [Technical Field to Be Invented] The present invention relates to a liquid crystal display device. [Prior Art] Conventionally, a liquid crystal display device is formed by squeezing a liquid crystal cell such as a transparent electrode, a liquid crystal layer, or a color filter with two polarizing plates provided on both sides thereof, and each polarizing plate is polarized. The sub-layer (referred to as a polarizing film or a polarizing film) is composed of two optical films (a polarizing plate protective film or an optical compensation film). Further, such a liquid crystal display device has developed various modes such as a VA (virtical Alignment) mode, an IPS (In-Place-Switching) mode, and a TN (Twisted Nematic) mode in the liquid crystal driving method. The VA mode display speed is fast, and the front contrast is excellent, so most of the large-screen LCD TVs are used. In the VA mode liquid crystal display device, when the voltage is not applied, the long axis of the liquid crystal material is vertically aligned with respect to the substrate surface, so that it can be almost completely black display when viewed from the vertical direction of the substrate, and high contrast can be achieved. Specialties. Further, when the liquid crystal material is vertically aligned, when viewed from an oblique direction, there is a problem that coloration occurs in the black display due to light leakage, or the contrast is lowered. There are two main reasons for this problem, and the liquid crystal layer used in a liquid crystal cell itself has a phase difference (also referred to as retardation) in the thickness direction. When the other two polarizers of the liquid crystal cell are orthogonal (orthogonal, the transmission axis is orthogonal), the transmission axes of these polarizers are orthogonal when viewed from the front view-5-201106060, but When viewed obliquely, it is apparently formed by a 90 degree deviation. For this problem, it is proposed to have a refractive index of nx, ny, nz (but the refractive index in the direction of the slow axis in the plane of the nx film, the refractive index in the direction of the phase axis of the ny film, and the refraction in the thickness direction of the nz system) Rate) A technique in which two biaxial films of nx >ny>nz are disposed on both sides of a liquid crystal cell in an attempt to expand the viewing angle. However, this configuration uses two sheets of the same film, and has an advantage in cost, but a sufficient viewing angle expansion effect cannot be obtained. Therefore, in recent years, a film in which nx = ny > nz is called a negative C plate and a film called n plate of nx > nz > ny has been developed in a polarizing plate, and an attempt has been made to expand the viewing angle. (For example, refer to Patent Documents 1 and 2). However, the techniques described in Patent Documents 1 and 2 can achieve a wide viewing angle. However, other optical performances that have been particularly emphasized in recent years, specifically, frontal contrast and color shift when viewed in an oblique direction have not been considered, and further improvement is still required. [PRIOR ART DOCUMENT] [Patent Document 1] [Patent Document 1] JP-A-2000-3 96 1 0 (Patent Document 2) JP-A-2007-148016 [Summary of the Invention] [Inventive Summary] Problem The object of the present invention is to provide a liquid crystal display device which can expand the viewing angle and improve the front contrast, and can prevent the color shift when viewed from the oblique direction. [Means for Solving the Problem] The inventors of the present invention have intensively discovered that the conventional Z plate is formed by heat shrinkage of polycarbonate or cycloolefin, and therefore can only be produced with positive wavelength dispersion (DSP > 1 ) However, when cellulose of reverse wavelength dispersion (DSP <1) is used, a Z-plate of reverse wavelength dispersion can be produced. Further, the above Patent Document 2 relates to a wavelength dispersion 値 DSP, and the C plate is preferably dispersed in a reverse wavelength, and the Z plate is preferably a positive wavelength dispersion. However, the inventors have carefully studied the Z plate and the positive dispersion dispersed in the reverse wavelength. When the wavelength-dispersed C plate is next to the liquid crystal cell, the color shift when viewed in an oblique direction can be reduced, and the viewing angle and front contrast can be improved. When a Z-plate having a reverse wavelength dispersion is used, when the Z-plate is formed as a single layer, in order to exhibit the viewing angle expansion effect, it is necessary to set the retardation 値R〇 to a very large phase difference of Ro and 275 to the Z-plate, so the Z-plate The influence of the slight optical axis deviation in the plane is increased, which causes the front contrast to decrease. However, when the Z-plate is formed by laminating a biaxial film and a liquid crystal layer functioning as a positive C plate, the delay is 値When the phase difference of 1⁄2 or less of R〇=50 to 100 is given to the entire Z plate, the viewing angle expansion effect can be exhibited, and the phase difference unevenness can be reduced, and high front contrast can be maintained. In view of the above problems, according to the first aspect of the present invention, the liquid crystal display device is characterized in that it has at least a first polarizer, a first optical compensation layer, a liquid crystal cell, a second optical compensation layer, and a second In the polarizer, the first and second optical compensation layers satisfy the following formula ().) to (3) 201106060 The liquid crystal molecules in the liquid crystal cell are aligned in the thickness direction of the liquid crystal cell when displayed in black. Nxl>nzl>nyl C 1 ) nx2 ^ ny2>nz2 ( 2 ) DSP ( Rol) < 1 < DSP ( Rth2 ) ( 3 ) (But nx 1 represents the late phase in the plane of the aforementioned first optical compensation layer) The refractive index in the axial direction, nyl represents the refractive index in the surface direction of the first optical compensation layer, the refractive index in the thickness direction of the first optical compensation layer, and the second optical in the xx2 system. The refractive index in the retardation axis direction in the plane of the compensation layer, ny2 indicates the refractive index in the surface direction of the second optical compensation layer, and nz2 indicates the refractive index in the thickness direction of the second optical compensation layer. Rol is an in-plane retardation 値 of the first optical compensation layer represented by the following formula (8-1), and Rth2 is a retardation 厚度 in the thickness direction of the second optical compensation layer represented by the following formula (9-2). DSP (Rol) is a wavelength dispersion 面 of the in-plane retardation 値R〇1 of the first optical compensation layer, and the in-plane retardation 値Rol of the aforementioned optical compensation layer measured at a wavelength of 48 Onm is divided by the wavelength of 63 Onm The measured in-plane retardation 値Rol is measured as follows. DSP (Rth2) is the thickness of the aforementioned second optical compensation layer. Zhi direction retardation Rth2 of wavelength dispersion Zhi, the second optical compensation layer as measured at a wavelength of 480nm divided by the retardation Rth2 Zhi measured at a wavelength of 63 Onm retardation Rth2 of Zhizhi.

Rol=(nxl-nyl)xdl (8-1)

Rth2={ ( nx2 + ny2 ) /2-nz2} xd2) ( 9-2) 201106060 However, dl represents the thickness (nm) of the first optical compensation layer, and d2 represents the thickness of the second optical compensation layer (nm). ), Rol and Rth2 are respectively measured by wavelength 590 nm). In the liquid crystal display device of the present invention, the first optical compensation layer is preferably a cellulose resin layer. In the liquid crystal display device of the present invention, it is preferable that the first optical compensation layer satisfies the following formulas (4) and (5), and the second optical compensation layer preferably satisfies the following formulas (6) and (7). .

Rol=50~100[nm] ( 4) | R t h 1 | = 0~2 0 [ nm ] ( 5 ) R〇2 = 0~20[nm] ( 6 )

Rth2 = 200 to 3 50 [nm] (7) (However, Rthl represents a retardation 厚度 in the thickness direction of the ith optical compensation layer represented by the following formula (9-1), and R 〇 2 represents the following formula (8-2) The in-plane retardation 値 of the second optical compensation layer is shown, and Ro2 and Rthl are enthalpy measured at a wavelength of 590 nm.

Ro2= ( nx2-ny2) x d 2 ( 8-2)

Rthl={(nxl+nyl)/2-nzl}xdl) (9-1)). In the liquid crystal display device of the present invention, the first optical compensation layer contains at least a cellulose resin layer and a liquid crystal layer, and the cellulose resin layer is disposed closer to the first polarizer than the liquid crystal layer. The side has an in-plane phase difference, and the slow axis is preferably orthogonal to the absorption axis of the first polarizer. -9 - 201106060 The liquid crystal display device of the present invention, wherein the first optical compensation layer contains at least a cellulose resin layer and a liquid crystal layer, and the cellulose resin layer is disposed closer to the liquid crystal layer than the liquid crystal layer The liquid crystal cell side has an in-plane phase difference, and the slow axis is parallel to the absorption axis of the first polarizer. In the liquid crystal display device of the present invention, the second optical compensation layer is preferably composed of a cellulose-based resin layer containing a DSP 値 rising agent. [Effect of the Invention] According to the present invention, when the liquid crystal molecules in the liquid crystal cell are displayed in black, they are aligned in the thickness direction of the liquid crystal cell, and the first and second optical compensation layers satisfy nxl > nzl > nyl, nx2 ^ ny2 > Nz2 ' DSP ( Ro1 ) < 1 < DSP ( Rth2 ), thereby widening the viewing angle, improving the front contrast, and preventing the color shift when viewed in an oblique direction (refer to the embodiment). [Mode for Carrying Out the Invention] Hereinafter, embodiments of the present invention will be described with reference to the drawings. [First Embodiment] Fig. 1 (a) is a view showing an example of a liquid crystal display device 1 of the first embodiment. As shown in the figure, the liquid crystal display device 1 is a liquid crystal display device of the VA mode (m 0 de ), and has a first polarizer 2, a first optical compensation layer 3, and a liquid crystal in a state of being sequentially laminated from the identification side toward the backlight side. Cell 4, second optical compensation layer 5 -10- 201106060, and second polarizer 6. More specifically, the first and second polarizers 2, 6 and the first optical compensation layer 3 are perpendicular to the slow axis 3J of the first optical compensation layer 3 and the absorption axis 2J of the first polarizer 2 is the first. The absorption axis of the polarizer 2 is orthogonal to the absorption axis of the second polarizer 6, and the slow axis 3J of the first optical compensation layer 3 and the absorption axis 6J of the second polarizer 6 are arranged in parallel. In Fig. 1, the backlight is on the lower side in the figure, but may also be on the upper side. In this specification, "parallel" or "orthogonal" means within a range of ±10° which is not at a strict angle. The error between this range and the tight angle is preferably less than ± 5°, more preferably less than ± 2°. In the present specification, the slow phase axis means a direction in which the refractive index becomes maximum. (1) Liquid crystal cell The liquid crystal cell 4 is formed by sandwiching the liquid crystal layer 40 with two glass substrates 41. The liquid crystal layer 40 is composed of rod-like liquid crystal molecules, and each liquid crystal molecule is aligned in the thickness direction of the liquid crystal cell 4 in black display. Here, the thickness direction of the liquid crystal molecules aligned to the liquid crystal cells 4 in the black display means the same meaning as the vertical direction to the glass substrate 41, and the liquid crystal cell 4 is in the VA mode. The rod-like liquid crystal of the liquid crystal cell 4 of such a VA mode has a retardation 値Rth of negative and a wavelength dispersion of positive. The liquid crystal material of the liquid crystal layer 4 may be a nematic liquid crystal material having a dielectric anisotropy of negative, a refractive index anisotropy Δη = 〇·〇815, and a dielectric anisotropy Α ε = _4.5. Wait. The thickness d of the liquid crystal layer is not particularly limited, and when the nematic liquid crystal material is used, it can be set to about 3, 5 μm. However, the brightness of the white display is changed by the product of the thickness d and the refractive index anisotropy Δη Δη'd. Therefore, in order to obtain the maximum brightness, Δη·d is preferably set at 〇.2~〇.5μιη. The scope. -11 - 201106060 In the VA mode liquid crystal display device, the TN mode liquid crystal display device is generally used for adding a palm powder, which deteriorates the dynamic response characteristics, so it is less used, but it can also be added in order to reduce misalignment. . In the multi-region structure, it is advantageous to adjust the alignment of the liquid crystal molecules in the interface region between the regions. The multi-region structure refers to a structure in which one pixel of a liquid crystal display device is divided into a plurality of regions. For example, in the VA mode, when the liquid crystal molecules are tilted in the white display, the tilt direction and the reverse direction are different in the magnitude of the birefringence of the liquid crystal molecules when viewed obliquely, and there is a difference in brightness or hue, but in the multi-region structure It is preferable to improve the viewing angle characteristics of brightness and hue. Specifically, each pixel is composed of a region of 2 or more (preferably 4 or 8) different from each other in the initial alignment state of the liquid crystal molecules, and averaging can reduce variations (unevenness) in brightness or hue depending on the viewing angle. When the pixels are applied with a voltage, the same effect can be obtained even if the alignment direction of the liquid crystal molecules is a region in which two or more different phases are continuously changed. In the pixel, in order to form a plurality of regions in which the alignment directions of the liquid crystal molecules are different, for example, a slit (s 1 it ) may be provided on the electrode, or a protrusion may be provided to change the direction of the electric field, or the electric field density may be uneven. . If you want to obtain an equal angle of view in all directions, you can increase the number of divisions, but you can get a roughly equal angle of view with 4 or more divisions. In particular, in the case of eight divisions, it is preferable to set the absorption axis of the polarizing plate to an arbitrary angle. The regional interface of each region tends to have difficulty in response of liquid crystal molecules. In the Normally black mode such as the V A mode, the black display is maintained and there is a problem that the brightness is lowered. Therefore, the addition of a palm powder to the liquid crystal material can reduce the interfacial region between regions -12- 201106060. In addition, in the Normally White mode, the white display state is maintained, so the front contrast is lowered. A light shielding layer covering a black matrix or the like of the area may be provided. (2) First and second polarizers The first and second polarizers 2 and 6 are optical elements that pass only the polarized surface in a certain direction, and can be produced by a conventionally known method. The polarizer represented by the present invention is, for example, a polyvinyl alcohol-based polarizing film, and more specifically, a person who dyes a polyvinyl alcohol-based film with an iodine dye and a dichroic dye. Such a polarizer is preferably formed by subjecting a polyvinyl alcohol aqueous solution to film formation, performing one-axis stretching, dyeing, or dyeing, and then performing one-axis stretching, preferably by boron compound. Usually, the polarizer is held on both sides by a TAC film or the like as a protective layer. The inner surface of the TAC film is subjected to alkali saponification treatment, and is immersed in at least one surface of the polarizing film prepared by stretching in the iodine solution, and is preferably bonded together using a completely saponified polyvinyl alcohol aqueous solution. The TAC film can also be used on the other side, and other films having a polarizing plate protection function can also be used. Commercially available cellulose ester films (e.g., Konicaminolta tak KC8UX, KC4UX, KC5UX, KC8UCR3, KC8UCR4, KLC8UCR5, KC4UE, KC8UY, KC4UY, KC12UR, KC4FR, above Konica Minolta Opto) can also be used. In the configuration of the present invention, the first polarizer and the second polarizer 2 and 6 are respectively held by two TAC films, and can be bonded to the first and second optical compensation layers 3' 5 ' via the adhesive layer but from the film. The viewpoint of the material, the member reduction, and the optical compensation is preferably applied directly to the optical compensation layers 3 and 5 without passing through the TAC film. -13-201106060 (3) First and second optical compensation layers The first and second optical compensation layers 3 and 5 satisfy the following formulas (1) to (3), and are preferably in the form of a film from the viewpoint of use (hereinafter). Also known as optical compensation film 3, 5). More preferably, the following formulas (4) to (7) are satisfied. Nxl>nzl>nyl ( 1 ) nx2 ^ ny2>nz2 ( 2) DSP(Rol) <1 <DSP ( Rth2 ) ( 3 ) R ο 1 = 5 0~1 0 0 [ nm ] ( 4 ) |Rthl | = 0~20[nm] ( 5 )

Ro2 = 0~20[nm] ( 6 )

Rth2 = 200~3 50[nm] (7) where "nx" indicates the refractive index of the slow axis direction in the optical compensation plane, and "ny" indicates the refractive index of the phase axis direction in the optical compensation plane, " NZ" indicates the refractive index in the thickness direction of the optical compensation layer, and "R〇J ' "Rth" is a delay 所得 obtained by the following formulas (8) and (9). Further, the numerals "1" and "f _ 2" added to the respective equations indicate the number of the first optical compensation layer 3 and the second optical compensation layer 5. These numbers are the enthalpy measured at a wavelength of 590 η m. The refractive index of each of the refractive indices can be measured in an environment of 23 ° C and 5 5% RH using, for example, KOBRA-21ADH (Prince Measurement Machine (share)) or Axo scan (manufactured by AXOMETRICS). Ro =( nx-ny) χ d (8) Rth= { (nx+ny) /2 -nz}X d ) (9) According to the equations (8) and (9), the refractive index is nx>nz&gt ;ny, R〇>C >, and satisfy -Ro/2<Rth<Ro/2, conversely, Ro>0, and -14-201106060

Ro/2<Rth<Ro/2> satisfies nx>nz>nyo on the evening t,nxgny>nz' R〇2 〇 and satisfies Rth>Ro/2, the opposite Ro 2 0 and Rth>Ro/2 When nx 2 ny > nz is satisfied. The "DSP (Rol)" in the above formula (3) is a wavelength dispersion of the in-plane phase difference of the first optical compensation layer 3, specifically, the retardation of the first optical compensation layer 3 measured at a wavelength of 48 Onm.値Ro is divided by the 値R〇 of 测定R〇 measured at a wavelength of 63 0 nm. "DSP (Rth2)" is a wavelength dispersion of the phase difference in the thickness direction of the second optical compensation layer 5, specifically, the retardation 値Rth of the second optical compensation layer 5 measured at a wavelength of 480 nm divided by the wavelength 63. The delay 値Rth measured under 0ηιη. These wavelength dispersions are DSP when the positive wavelength is dispersed, DSP >1, and the negative (reverse) wavelength is dispersed, D S P < (3·1) First optical compensation layer The first optical compensation layer 3 satisfies the above-mentioned n-type retardation-distributed Z-plate, as described above, satisfying nxl > nZl > nyl, DSP (Ro 1 ) < The first optical compensation layer 3 preferably has an in-plane retardation 値Rol of 50 to 100 nm, and a thickness in the thickness direction 値Rth1 of an absolute 値 of 〇nm to 20 nm. In order to impart the properties of nxl >nzl> nyl and DSP (Rol) <1 to the first optical compensation layer 3, a shrinkable film is bonded to the cellulose resin film having reverse wavelength dispersibility and extended as described later. At the same time, shrinkage is preferred The resin is used as a substrate by extending the biaxial film, and the liquid crystal layer is coated thereon, preferably dried and fixed. These and the description of Figure 2 are detailed below. The form of the first optical compensation layer 3 is not particularly limited, but a film is preferable. The thickness d of the film is preferably 40 to ΙΟΟμιη, more preferably 40 to 70 μηι» -15- 201106060 (3 ·1 .1). The cellulose-based resin used in the first optical compensation layer is used for the first optical compensation layer 3. The cellulose ester is not particularly limited, and the cellulose ester is a carboxylate or an aromatic carboxylate having a carbon number of 2 to 2, and particularly preferably a lower fatty acid having 6 or less carbon atoms. A cellulose ester resin graft-polymerized with ε-caprolactone and a cellulose ester resin disclosed in Japanese Laid-Open Patent Publication No. 2008-197975 can also be used. The thiol group bonded to the hydroxy group may be a straight chain or a branched chain, and may also form a ring. It may also be substituted with other substituents. In the case of the same degree of substitution, when the carbon number is large, the birefringence is lowered. Therefore, a fluorenyl group having a carbon number of 2 to 6 carbon atoms is selected. The carbon number of the above cellulose ester is preferably from 2 to 4, more preferably from 2 to 3. Specifically, the cellulose ester may use, for example, cellulose acetate propionate, cellulose acetate butyrate, or cellulose acetate propionate butyrate, and the propionate group. Or a butyrate-bonded cellulose mixed fatty acid ester. The butyl group forming the butyrate may be a straight chain or a branched chain. The cellulose esters which are more suitably used in the present invention are, for example, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, cellulose acetate phthalate, and the present invention. The cellulose ester other than the cellulose acetate phthalate is preferably one of the following formulas (101) and (i). Formula (101) 2.0SX + YS3.0 Formula (102) 0SYS1.5 wherein, the degree of substitution of the X-based acetamidine group, the Y-based propyl fluorenyl group or the butyl group, or a mixture thereof. -16- 201106060 In order to obtain the optical properties of the purpose, it is also possible to mix resins with different degrees of substitution. The mixing ratio is preferably 10:90 to 90:10 (mass ratio). Among them, cellulose acetate propionate is particularly preferred. The cellulose acetate fermented propionate is preferably 1.0SXS2.5, O.l 'Y^l.5, 2.0SX + YS3.0. The method for determining the degree of substitution of the thiol group can be determined according to A S T Μ - D 8 1 7 - 9 6 . The film obtained by using the cellulose ester of the present invention having a number average molecular weight of from 6,000 to 30,000 Å has a strong mechanical strength and is therefore preferred. More preferably used for 70,000 to 200,000. The weight average molecular weight Mw and the number average molecular weight Μη of the cellulose ester can be measured by gel permeation chromatography (GPC). The measurement conditions are as follows. Solvent: Dichloromethane Column: 311〇(^乂1<:8 06, 〖8 05, 〖8 03 0 (connected to Showa Denko (share) system)

Column temperature: 25 °C Sample concentration: 0.1% by mass Detector: RI Model 504 (manufactured by GLScience) Pump: L6000 (manufactured by Hitachi, Ltd.) Flow rate: 1.0 ml/min Calibration curve: Standard polystyrene A calibration curve obtained from 13 samples of STK standard polystyrene (manufactured by Tosoh Corporation) from Mw = 1,000,000 to 500. 1 3 samples are used at equal intervals. The cellulose of the raw material of the cellulose ester used in the present invention is not particularly limited, and cotton linter, wood pulp, kenaf or the like can be used. The fibers -17- 201106060 obtained from them can be mixed in any ratio. The cellulose ester of cellulose acetate phthalate or the like of the present invention can be produced by a known method. Specifically, the synthesis can be carried out by referring to the method described in JP-A-10-45804. (3.2) Second optical compensation layer The second optical compensation layer 5 is a negative C plate which satisfies nx2$ny2 > nz2, 1 < DSP (Rth2), which is a so-called positive wavelength dispersion. Preferably, the second optical compensation layer 5 has R〇2 = 0 to 20 and Rth2 = 200 to 3 50 °. In order to delay the second optical compensation layer 5 within the above range, it is preferable to perform two axes. Extended processing. Further, in the case where the second optical compensation layer 5 contains a cellulose ester, in the treatment of stretching after the heat treatment, in order to reduce the residual stress as much as possible, the glass transition point of the cellulose ester is ± 1 (the range of the TC degree is 1.1). In the state in which the amount of the residual solvent is from 2 to 100% by mass, the film is formed in a state in which the amount of the residual solvent is from 2 to 100% by mass. It is preferable that the transport direction and the orthogonal direction extend 1.1 to 1.7 times. In the second optical compensation layer 5, unevenness in the control plane is preferable. Therefore, the balance between the extension temperature and the extension ratio is precisely controlled, and then optical compensation is performed. It is preferred to independently control the extension portion (the clamp of the tenter, etc.) on both sides of the layer 5. This control adjusts the position of the clamp, and the stress on the clamp can be achieved by adjusting the extension temperature and the extension ratio. The form of the layer 5 is not particularly limited, and is preferably a film. The thickness of the film is 40 to 200 μm, preferably 40 to 120 μm. (3.2. 1) The cellulose used in the second optical compensation layer. Resin-18 - 201106060 The cellulose ester used in the second optical compensation layer 5 is not particularly limited, and s-caprolactone and cellulose ester resin can be grafted using the cellulose ester which can be used in the first optical compensation layer 3 described above. Resin other than the polymerized cellulose ester resin. (3.2.2) DSP 値 rising agent In the second optical compensation layer 5, 'the delay 値 is the above range, and in order to obtain the effect of the present invention, the DSP 値 rising agent is used. Preferably, the DSP rising agent is a compound which increases the DSP (Rth) by 0.001 or more, preferably by 0.002 or more by adding 1%. The DSP rising agent can be used, for example, as disclosed in Japanese Laid-Open Patent Publication No. 2007-249180. The triazine compound of the general formula (II). General formula (II) [Chemical Formula 1] ¥ h2 (In the general formula (π), the R12 systems independently represent at least one of the ortho, meta and para positions. An aromatic ring or a heterocyclic ring having a substituent. X11 each independently represents a single bond or -NR13-. wherein R13 each independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, an alkenyl group, an aryl group or a heterocyclic group. .) DSP risers can also use discotic compounds. As the compound, at least two aromatic rings can be used. In the present specification, the "aromatic ring" is an aromatic hydrocarbon ring in addition to the aromatic hydrocarbon ring, and the aromatic hydrocarbon ring is included in the aromatic hydrocarbon ring. Preferably, the 6-membered ring (ie, benzene ring). The aromatic heterocyclic ring is generally an unsaturated heterocyclic ring. The aromaticity is a 5-membered ring, a 6-membered ring or a 7-membered ring, and more preferably a 5-membered ring or a 6-membered ring. The heterocyclic ring generally has the most double bond. The hetero atom is preferably a nitrogen atom and a sulfur atom 'excellently a nitrogen atom. An aromatic hetero ring such as a thiophene ring, a pyrrole ring, an oxazole ring, an isoxazole ring, or a thiazole ring. Ring, imidazole ring, pyrazole ring, furazan ring, triazole ring, pyran ring 'pyridazine ring, pyrimidine ring, pyridazine ring and 1,3,5-triazine ring. Aromatic ring is preferably benzene Ring, furan ring, thiophene ring, oxazole ring, thiazole ring, imidazole ring, triazole ring, pyridine ring, pyridazine ring and 1,3,5-triazine ring, particularly preferably 1,3,5-triazine ring. The compound disclosed in Japanese Laid-Open Patent Publication No. 200 1 - 1 66 1 44 is used as a discotic compound. The number of aromatic rings of the discotic compound is more preferably 2 to 12, still more preferably 2 to 8, most preferably 2 to 6. The bonding relationship between the two aromatic rings can be classified into (a) formation of 'b (b) when a single bond is directly bonded and (c) a bond between the bases (because of the aromatic ring, a spiro bond cannot be formed). Combine any of a)~(c). (a) The condensed ring (the condensation of two or more aromatic rings includes an anthracene ring, a naphthalene ring, a molybdenum ring, an anthracene ring, a phenanthrene ring, an anthracene ring, an indole ring, a butyl ring, an anthracene ring, an anthracene ring) , isoindole ring, benzobenzothiazole ring, pyridazine ring, benzoxazole ring, benzothiazole hetero ring is preferred. Aromatic group, oxygen original furan ring, isothiazole, B ring, In the case of a pyrrole-pyrimidine ring or a compound, it is preferably a condensed ring of 2 to 2 0 condensed ring, which may be a (cyclo) olefin ring, a bifuran ring, a ring, a benzo-20- 201106060 , benzotriazole ring, anthracene ring, porphyrin ring, chromene ring, quinoline ring, isoquinoline ring, quinazoline ring, quinazoline ring, porphyrin ring, quinoxaline ring, stuffed ring, Acridine ring, carbazole ring, acridine ring, phenanthridine ring, xanthene ring, phenothiazine ring, phenothiazine ring, phenothiazine ring, phenoxazine ring and thioindole ring, preferably naphthalene ring, a ring, an anthracene ring, a benzoxazole ring, a benzothiazole ring, a benzimidazole ring, a benzotriazole ring, and a quinoline ring. The single bond of (b) is preferably a carbon atom between two aromatic rings. Bonding. More than two The bond 'and two aromatic rings are bonded to form an aliphatic ring or a non-aromatic heterocyclic ring between the two aromatic rings. The linking group of (c) is preferably bonded to the carbon atom of two aromatic rings. The linking group is preferably an alkyl group, an alkenyl group, an alkynyl group, a -CO-, -0-, -NH-, -S- or a combination thereof. The linking group composed of the combination is as shown below. The left-and-right relationship of the following linked bases can be reversed. cl:._CO-0-c2: -CO-NH-c3:-alkyl--0-c4:-NH-C0-NH-c5:-NH-C0 -0-c6:-0-C〇-〇-c7:-〇-alkylene- 〇-c8:-CO-alkenyl-c9:-CO-alkenyl-NH-clO:-CO_ Alkenyl-O-cll:-alkylene-CO-O-alkylene- 0-C0-alkylene-cl2:-0-alkylene-C0-0-alkylene- 0-C0-stretch Alkyl-0-cl3:-0-CO-alkylene-C0-0-cl4:-NH-C0-alkenyl-- cl5:-0-C0-alkenyl-aromatic ring and linking group may have The substituent is, for example, a halogen atom (F, Cl, Br, I), a hydroxyl group, a carboxyl group, a cyano group, an amine group, a nitro group, a sulfonic acid group, an aminomethyl fluorenyl group, an amine sulfonyl group, a ureido group, An alkyl group, an alkenyl group, an alkynyl group, an aliphatic fluorenyl group, an aliphatic decyloxy group, an alkoxy group, an alkoxycarbonyl group, Oxycarbonylamino group, alkylthio group, alkylsulfonyl group, aliphatic decylamino group, aliphatic sulfonamide group, aliphatic substitution-21 - 201106060 Amino group, aliphatic substituted aminomethyl fluorenyl group, fat a group substituted with an amine sulfonyl group, an aliphatic substituted ureido group and a non-aromatic heterocyclic group. The alkyl group preferably has 1 to 8 carbon atoms, preferably a chain alkyl group, more preferably a cyclic alkyl group. More preferably, it is a linear alkyl group. The alkyl group may further have a substituent (for example, a hydroxyl group, a carboxyl group, an alkoxy group, or an alkyl group-substituted amine group). Alkyl groups (including substituted alkyl groups) are, for example, methyl, ethyl, η-butyl, η-hexyl, 2-hydroxyethyl, 4-carboxybutyl, 2-methoxyethyl and 2-diethyl Aminoethyl. The number of carbon atoms of the alkenyl group is preferably from 2 to 8. The chain alkenyl group is preferred to the cyclic alkenyl group, and particularly preferably a linear alkenyl group. The alkenyl group may have a substituent. The alkenyl group is, for example, a vinyl group, an allyl group or a 1-hexenyl group. The number of carbon atoms of the alkynyl group is preferably from 2 to 8. The chain alkynyl group is preferred to the cyclic alkynyl group, and particularly preferably a linear alkynyl group. The alkynyl group may have a substituent. The alkynyl group is, for example, an ethynyl group, a 1-butynyl group, and a 1-hexynyl group. The number of carbon atoms of the aliphatic sulfhydryl group is preferably from 1 to 1 Å. The aliphatic sulfhydryl group may, for example, be an ethyl group, a propyl group or a butyl group. The aliphatic methoxy group preferably has 1 to 10 carbon atoms. The aliphatic methoxy group has, for example, an ethoxy group. The alkoxy group preferably has 1 to 8 carbon atoms. The alkoxy group may have a substituted group (e.g., an alkoxy group). The alkoxy group (including a substituted alkoxy group) may, for example, be a methoxy group, an ethoxy group, a butoxy group or a methoxyethoxy group. The alkoxycarbonyl group preferably has 2 to 10 carbon atoms. The alkoxycarbonyl group has, for example, a methoxycarbonyl group and an ethoxycarbonyl group. The alkoxycarbonylamino group preferably has 2 to 10 carbon atoms. The alkoxycarbonylamino group is, for example, a methoxycarbonylamino group and an ethoxycarbonylamino group. -22- 201106060 The alkylthio group preferably has 1 to 12 carbon atoms. The alkylthio group is, for example, a methylthio group, an ethylthio group and an octylthio group. The alkylsulfonyl group preferably has 1 to 8 carbon atoms. The alkylsulfonyl group is, for example, a methanesulfonyl group and an ethanesulfonyl group. The aliphatic guanamine group preferably has 1 to 1 carbon atom. The aliphatic guanamine group is, for example, an acetamino group. The aliphatic sulfonamide group preferably has 1 to 8 carbon atoms. The aliphatic sulfonium amine group is, for example, a methanesulfonylamino group, a butanesulfonylamino group or an η-octanesulfonylamino group. The number of carbon atoms of the aliphatic substituted amine group is preferably from 1 to 10. Aliphatic Substituents Amine groups are, for example, dimethylamino, diethylamino and 2-carboxyethylamino. The number of carbon atoms of the aliphatic substituted aminocarbamyl group is preferably from 2 to 10. The aliphatic substituted aminomethylmercapto group is, for example, a methylaminocarbamyl group and a diethylaminomethyl group. The number of carbon atoms of the aliphatic substituted amine sulfonyl group is preferably from 1 to 8. Aliphatic substituted amine sulfonyl groups are, for example, methylamine sulfonyl and diethylamine sulfonyl. The number of carbon atoms of the aliphatic substituted ureido group is preferably from 2 to 10. Aliphatic Substituents Urea groups are, for example, methylureido groups. The non-aromatic heterocyclic group is, for example, a piperidinyl group or a morpholinyl group. The molecular weight of the DSP rising agent composed of the discotic compound is preferably 300 to 800 Å. In the present invention, in addition to the above discotic compound, a rod-like compound having a linear molecular structure may be used. The linear molecular structure refers to the thermodynamically most stable structure in which the molecular structure of the rod-like compound is a straight line. -23- 201106060 Thermodynamically the most stable structure can be obtained by crystal structure analysis or molecular orbital calculation. For example, using a molecular orbital calculation software (for example, WinMOPAC2000, Fujitsu Co., Ltd.) to calculate a molecular orbital ‘the molecular structure in which the heat of formation of a compound becomes the smallest. The molecular structure is a straight line. In the thermodynamically most stable structure calculated as described above, the molecular structure is such that the angle of the main chain is 140 degrees or more. The rod-like compound preferably has at least two aromatic rings, and the rod-like compound having at least two aromatic rings is preferably a compound represented by the following general formula (103). General formula (1 03 ) : Ai^-lJ-Ar2 In the above general formula (103), the Ar1 and Ar2 systems are each independently an aromatic group. In the present specification, the aromatic group contains an aryl group (aromatic hydrocarbon group), a substituted aryl group 'aromatic heterocyclic group, and a substituted aromatic heterocyclic group. The aryl group and the substituted aryl group are more preferable than the aromatic heterocyclic group and the substituted aromatic heterocyclic group. The heterocyclic ring of the aromatic heterocyclic group is generally unsaturated. The aromatic heterocyclic ring is preferably a 5-membered ring, a 6-membered ring or a 7-membered ring, more preferably a 5-membered ring or a 6-membered ring. Aromatic heterocycles generally have the most double bonds. The hetero atom is preferably a nitrogen atom, an oxygen atom or a sulfur atom. More preferably, it is a nitrogen atom or a sulfur atom. The sulfonyl group-containing heterocyclic ring is, for example, a benzene ring, a furan ring, a thiophene ring, a pyrrole ring, an oxazole ring, a thiazole ring, an imidazole ring, a triazole ring, a pyridine ring, a pyrimidine ring, and a fluorene ring. ring. The substituent of the substituted group and the substituted aromatic heterocyclic group, for example, a halogen atom (F, Cl, Br, 〗), a hydroxyl group, a carboxyl group, a cyano group, an amine, an alkyl group - 201106060 amine group (for example, a methyl group) Amino, ethylamino, butylamino, dimethylamino) 'nitro, sulfonate, aminocarbamimidyl, alkylaminocarbamimidyl (eg N-methylaminocarbamidine) Base, N-ethylaminomethylmercapto, hydrazine, hydrazine-dimethylaminocarbamyl), amidoxime, alkylamine sulfonyl (eg Ν-methylamine sulfonyl, hydrazine- Ethylamine sulfonyl, hydrazine, hydrazine-dimethylamine sulfonyl), ureido, alkylureido (eg Ν-methylureido, hydrazine, hydrazine-dimethylureido, hydrazine, hydrazine, Ν'-trimethylureido), alkyl (eg methyl, ethyl, propyl, butyl, pentyl, heptyl, octyl, isopropyl, second butyl 'third pentyl, ring Hexyl, cyclopentyl), alkenyl (eg vinyl, allyl, hexenyl), alkynyl (eg ethynyl, butynyl), fluorenyl (eg methyl, ethyl, butyl, hexyl) Sulfhydryl, lauryl), decyloxy (eg ethoxylated, butyl) Oxyl, hexyloxy, lauryloxy), alkoxy (eg methoxy, ethoxy, propoxy, butoxy, pentyloxy, heptyloxy, octyloxy) An aryloxy group (e.g., phenoxy), alkoxycarbonyl|g (e.g., methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl 'butoxycarbonyl, pentyloxycarbonyl, heptyloxycarbonyl), An aryloxycarbonyl group (e.g., phenoxycarbonyl), an alkoxycarbonylamino group (e.g., a butoxycarbonylamino group, a hexyloxycarbonylamino group), an alkylthio group (e.g., a methylthio group, an ethylthio group) , propylthio, butylthio, pentylthio, heptylthio, octylthio), arylthio (eg phenylthio), alkylsulfonyl (eg methylsulfonyl) Base, ethylsulfonyl, propylsulfonyl, butylsulfonyl, pentylsulfonyl, heptylsulfonyl, octylsulfonyl), decylamino (eg acetaminol, butyl) An amidino group, a hexamethyleneamine group, a laurylamine group, and a non-aromatic heterocyclic group (for example, morpholinyl, pyrazinyl). -25- 201106060 The substituent of the substituted aryl group and the substituted aromatic heterocyclic group is preferably a halogen atom, a cyano group, a carboxyl group, a hydroxyl group, an amine group, an alkyl-substituted amine group, a decyl group, a decyloxy group or a decylamino group. The alkyl moiety of the alkoxycarbonyl group, the alkoxy group, the alkylthio group and the alkylalkylalkylamino group, the alkoxycarbonyl group, the alkoxy group and the alkylthio group may further have a substituent with the alkyl group. The alkyl moiety and the substituent of the alkyl group are, for example, a halogen atom, a hydroxyl group, a carboxyl group, a cyano group, an amine group, an alkylamino group, a nitro 'sulfonic acid group, an aminomethyl fluorenyl group, an alkylaminocarbamyl group, Aminesulfonyl, alkylamine sulfonyl, ureido, alkylureido, alkenyl, alkynyl, decyl, decyloxy, decylamino, alkoxy, aryloxy, alkoxycarbonyl An aryloxycarbonyl group, an alkoxycarbonylamino group, an alkylthio group, an arylthio group, an alkylsulfonyl 'nonylamino group, and a non-aromatic heterocyclic group. The substituent of the alkyl moiety and the alkyl group may, for example, be a halogen atom, a hydroxyl group, an amine group, an alkylamino group, a decyl group, a decyloxy group, a decylamino group, an alkoxycarbonyl group or an alkoxy group. In the general formula (1〇3), L1 represents a divalent linking group selected from the group consisting of an alkyl group, an alkenyl group, an alkynyl group, -0-, -CO-, and the like. The alkylene group may have a cyclic structure. The cyclic alkyl group is preferably a cyclohexylene group, particularly preferably a 1,4-cyclohexylene group. The chain alkyl group is preferably a linear alkyl group having a branched alkyl group. The number of carbon atoms of the alkylene group is preferably from 1 to 20, more preferably from 1 to 15, more preferably from 1 to 10, still more preferably from 1 to 8, most preferably from 1 to 6. The alkenyl group and the alkynyl group have a chain structure better than those having a ring structure, and those having a linear structure are better than those having a chain structure. The number of carbon atoms of the alkenyl group and the alkynylene group is preferably from 2 to 10, more preferably from 2 to 8 -26 to 201106060 'more preferably from 2 to 6, more preferably from 2 to 4, most preferably 2 (extended ethylene) Or acetylene) The number of carbon atoms of the aryl group is preferably from 6 to 20, more preferably from 6 to 16, more preferably from 6 to 12 °, in the molecular structure of the general formula (1〇3), with the L1 In the state, the angle formed by Ar1 and Ar2 is preferably 140 degrees or more. The rod-like compound is more preferably a compound represented by the following general formula (104). General formula (104): AJ-I^-X-LLAr2 In the above general formula (104), each of Ar1 and Ar2 is independently an aromatic group. The definition and examples of the aromatic group are the same as those of Ar1 and Ar2 of the general formula (103). In the general formula (104), each of L2 and L3 is independently a divalent linking group selected from the group consisting of an alkyl group, -0 -, -C Ο - and a combination thereof. It is preferable that the alkyl group has a chain structure than the one having a ring structure. The one having a linear structure is more preferable to the one having a branched chain structure. The number of carbon atoms of the alkyl group is preferably one. More preferably, it is preferably 1 to 6, more preferably 1 to 4, most preferably 1 or 2 (methyl or ethyl). L2 and L3 are preferably - 0-CO- or - C0 -0-. In the general formula (104), "X is a 1,4-cyclohexylene group" or an ethynyl group. Specific examples of the compound represented by the general formula (1 03 ) or (104) are those contained in [Chem. 1] to [Chem. 1 1] of JP-A-2004- 1 0965. -27- 201106060 Other preferred compounds are shown below [Chemical 2] (47) CHaO-^^^-CO^-^^-dN "C4H,〇- 48) (<*8) Certi5〇5 〇) (51) Λ·—^ 〇OCH» UC -^^-C〇-£^-bCeH,j? -e-ο-

(54) nCjHii(») m ο

-OC (57) CHatGH^ 丨〒 hch*°~^3^0 Very CjHj S8) CH3pC--^^-OC--^^TO-^^-OpC»^

-28- (58) (58)201106060 [Chemical 3] ^4H9OC-^^^OC-;^^^G0---^^-pC4Hen

In the ultraviolet absorption spectrum of the solution, a rod-like compound having a maximum absorption wavelength (Xmax) shorter than 250 nm can be used in two or more types. Rod compounds can be synthesized by methods described in the literature. For example, Mol. Cryst. Liq. Cryst. '53, 229 (1 979), vol. 89, pp. 93 (1 982), vol. 145, 111 (1 987), same as 1 7 Volume 0, page 4 (1 9 9 9), J. Am. Chem · S o c., 1 1 3 volumes, 1 3 49 pages (1991), same as volume 118, page 5346 (1996), Vol. 92, 1582 (1970), J. Org. Chem., Vol. 40, pp. 420 (1975), Tetrahedron, Vol. 48, No. 16, p. 3437 (1992). (3.3) Additive In the above first and second optical compensation layers 3 and 5, in order to obtain the effect of the present invention, an additive may be contained as necessary. The additive is not particularly limited, and is preferably selected from the group consisting of an aromatic terminal polyester compound, a sugar ester compound, (meth) -29-201106060 acrylic compound, a polycarboxylic acid ester compound, a glycolate compound, and a benzoic acid. An acid ester compound, a fatty acid ester compound, a polyol ester compound, a polyester plasticizer, or the like. (3.3.1) Aromatic terminal polyester compound The aromatic terminal polyester compound represented by the following general formula (I) can be used in the present invention.

General formula (I) B-(GA) nGB (wherein B represents an aryl carboxylic acid residue, G represents an alkylene glycol residue having 2 to 12 carbon atoms or an aryl glycol residue having a carbon number of 6 to 12 a hydroxyalkyl alkane residue having a carbon number of 4 to 12, and A represents an alkylene dicarboxylic acid residue having a carbon number of 4 to 12 or an aryl dicarboxylic acid residue having a carbon number of 6 to 12, and η represents An integer of 1 or more.) - In the general formula (I), an aryl carboxylic acid residue represented by hydrazine and an alkyl diol residue or an oxyalkylene glycol residue or an aryl diol residue represented by G The alkylene dicarboxylic acid residue or the aryl dicarboxylic acid residue represented by hydrazine is obtained by the same reaction as a general polyester compound. The arylcarboxylic acid component of the aromatic terminal polyester compound used in the present invention is, for example, benzoic acid 'p-tert-butylbenzoic acid, o-xylene acid, m-xylene acid, p-xylene acid, dimethyl group. Benzoic acid, ethyl benzoic acid, n-propyl benzoic acid 'amino benzoic acid, acetoxy benzoic acid, etc. may be used in the form of a mixture of one type or two or more types. The alkanediol component having a carbon number of 2 to 12 of the aromatic terminal polyester compound which can be used in the present invention is, for example, ethylene glycol, 1,2-propylene glycol, 1,3-propanediol, i,2-butanediol,丨, 3_ butanediol, 1,2-propanediol, 2-methyl1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 2,2-dimethyl-1,3 -propylene glycol (new-30-201106060 pentanediol), 2,2-diethyl-1,3-propanediol (3,3-dihydroxymethylpentane), 2-n-butyl-2-ethyl -1,3-propanediol (3,3-dimethylol heptane), 3-methyl-1,5-pentanediol 1,6-hexanediol, 2,2,4-trimethyl 1, 3-pentanediol, 2-ethyl1,3-hexanediol, 2-methylι, 8-octanediol, 1,9-nonanediol, 1,10-decanediol, 1,1 2 - octadecanediol or the like, these diols may be used in the form of a mixture of one type or two or more types. In particular, an alkanediol having 2 to 12 carbon atoms is particularly preferable because it has excellent compatibility with a cellulose ester. Further, the 'oxyalkylene glycol component having a carbon number of 4 to 12 in the above aromatic terminal polyester compound' may be, for example, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol or tripropylene glycol. The diol may be used in the form of a mixture of one type or two or more types. The alkylene dicarboxylic acid component having a carbon number of 4 to 12 in the aromatic terminal polyester compound is, for example, succinic acid, maleic acid, fumaric acid, glutaric acid, adipic acid, sebacic acid or sebacic acid. And dodecanedicarboxylic acid, etc., etc., can be used as one type or a mixture of two or more types. Examples of the aryldicarboxylic acid component having 6 to 12 carbon atoms include benzoic acid, terephthalic acid, isophthalic acid, anthracene, 5 naphthalene dicarboxylic acid, U4 naphthalene dicarboxylic acid and the like. The aromatic terminal polyester compound used in the present invention is η of 1 or more and 100 or less. The number average molecular weight is preferably 3 Å to 15 Å (), more preferably 40 0 to 1,000. Further, the acid value is 0.5 mgKOH/g or less, and the hydroxyl value is 25 mgKOH/g or less. More preferably, the acid value is 〇 or less, and the hydroxyl value is 15 mgKOH/g or less. -31 - 201106060 The general formula of the present invention (the aromatic terminal polyester compound represented by η is preferably contained in an amount of 0.5 to 30% by mass based on the cellulose ester. The aromatic terminal polyester which can be used in the present invention is shown below. Specific compounds of the compounds, but the invention is not limited thereto.

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ZS-J.:.Xuan S-II £5 .- Ο8χο«χοαοο— -ρο'ο.ηο-£ο.08—o.30ho-£3003— 010 £0 .0£0 Supplementary Light 2 Λ The first issue of the Ming dynasty is to use the appropriate agent to add the knowledge to the layer to pay 3 3 2 3 layer to replenish the photosynthetic ester 1 sugar page > the first hair 2 2 to have a can 5 The esterification of the conjugated ester of the conjugate of the conjugated oligosaccharide or the saccharide C is less than or equal to The ratio of esterification to 35-201106060 is preferably 70% or more of the OH groups present in the pyranose structure or the furanose structure. The 'ester compounds' are also collectively referred to as sugar ester compounds in the present invention. The vinegar compound ' of the present invention' has the following, for example, but the present invention is not limited thereto. For example, glucose, galactose, mannose, fructose 'xylose, or arabinose, lactose, sucrose, cane tetrasaccharide, 1F-fructose cane tetrasaccharide, stachyose, maltitol, lactitol, lactulose ( Lactulose), cellobiose, maltose, fibrilose, maltotriose, raffinose or canetriose 〇 other such as gentiobiose, gentian trisaccharide, gentian tetrasaccharide, xylotriose, half Lactosyl sucrose and the like. Among these compounds, a compound having both a furanose structure and a pyranose structure is particularly preferred. For example, it is preferably sucrose, sucrose, sucrose, sucrose, sucrose, sucrose, sucrose, and more preferably sucrose. The monocarboxylic acid to be used for esterification of all or a part of the OH group in the pyranose structure or the furanose structure of the present invention is not particularly limited, and a known aliphatic monocarboxylic acid or alicyclic monocarboxylic acid can be used. Acid, aromatic monocarboxylic acid, and the like. The carboxylic acid to be used may be one type or a mixture of two or more types. Preferred aliphatic monocarboxylic acids are, for example, acetic acid, propionic acid 'butyric acid, isobutyric acid, valeric acid, caproic acid, heptanoic acid, caprylic acid, capric acid, capric acid, 2-ethyl-hexanecarboxylic acid' Monoalkanic acid, dodecanoic acid, tridecanoic acid, myristic acid, pentadecanoic acid, palmitic acid, heptadecanoic acid, octadecanoic acid, nonadecanic acid, twenty-36-201106060 Saturated fatty acids such as alkanoic acid, behenic acid, tetracosanoic acid, hexadecanoic acid, heptacosanoic acid, octacosanoic acid, tridecanoic acid, or tridecanoic acid, i- - unsaturated fatty acids such as carbenoic acid, oleic acid, sorbic acid, linoleic acid, linolenic acid, arachidonic acid, octenoic acid, and the like. Preferred alicyclic monocarboxylic acids are, for example, acetic acid, cyclopentanecarboxylic acid, cyclohexanecarboxylic acid, cyclooctanecarboxylic acid, or derivatives thereof. Preferred aromatic monocarboxylic acids are, for example, benzene rings of benzoic acid, toluic acid and the like, which are introduced into an alkyl group, an alkoxy aromatic monocarboxylic acid, cinnamic acid, diphenyl glycolic acid, or a biphenylcarboxylic acid. An aromatic monocarboxylic acid having two or more benzene rings, such as a naphthalenecarboxylic acid or a naphthyl carboxylic acid, or a derivative thereof, more specifically, for example, dimethylbenzoic acid or dimethylphenyl acid , dimethyl benzoic acid, tricresoleic acid, γ-heteroduic acid, ruthenic acid, ketonic acid, α-heodoic acid, lauric acid, α-toluic acid, hydrogenated atopic acid, Ato Acid, hydrogenated cinnamic acid 'salicylic acid, barium-anisic acid, m-anisic acid, ρ-anisic acid, phenolic acid, barium-high salicylic acid, m-high salicylic acid, p-high salicylic acid, 〇-pyroic acid, β-resorcinol, vanillic acid, isovaleric acid, cucurbitic acid, 〇 藜 藜 、 、, gallic acid, octanoic acid, bitter almond acid, high anisic acid, high vanillic acid, high Cucurbitic acid, strontium-sorghumic acid, decanoic acid, ρ-camphoric acid, particularly preferably benzoic acid. The esterified compound of oligosaccharide is suitably used as at least one compound having 1 to 12 furanose structures or pyranose structures of the present invention. The oligosaccharide is produced by the action of an enzyme such as a source powder or sucrose with an enzyme such as an amylase. The oligosaccharide which can be applied to the present invention is, for example, malto-oligosaccharide, isomaltoligosaccharide, fructooligosaccharide, milk oligosaccharide, and oligosaccharide. sugar. Further, the above-mentioned ester compound is a compound obtained by condensing at least one of a pyranose structure or a furanose structure represented by the formula (A), which is one or more of the following two or less. However, r21 to r25 represent a fluorenyl group or a hydrogen atom of the carbon number of 2 to 22, and m and η each represent an integer of 〇~12, and m + n represents an integer of 1 to 12. H-F-hr

R11 to Rl5 and R21 to R25 are preferably a benzamidine group or a hydrogen atom. The benzamidine group may further have a substituent R_26 (p is 0 to 5), and for example, an alkyl group, an alkenyl group, an alkoxy group, a phenyl group, or the like may be further substituted. The oligosaccharide can also be produced by the same method as the ester compound of the present invention. Specific examples of the vinegar compound of the present invention are shown below, but the present invention is not limited thereto. -38- 201106060 [化9]

Compound 2 CHjOCOCH, R20

C-CHCH, CH3 OR2 OR2 Η Compound 3

Compound 4

ο R4- — C-CjH5 -39- 201106060 [Chemical 10] Compounds

Ο R5« —C^QH*

ϋ R6= —C-CHj

0 R7= —C-CHa Compound 8

Ra= o « . •C-CHj -40- 201106060 [Chemistry 11] Compound 9 CH, OR9 CH, OR9 CH2OR9

R9= —C-CHj

Compound 1C R10=—C-CH, -41 - 201106060 [Chemical 12] Compound 11 CH2ORi1 CHz〇iRli

CH20B11

OCHy OCH3 〇CH, Compound 12: R120\?«« Η

CH2〇R12 OR12 OR12 Η R12« 6CH» Compound 13

R13« 0 H •C-CH: -〇 Compound 14

•42- 201106060 [Chemical 13]

R15*· Compound 16f.

0 R16» —C—CHj • Compound 17

-43- 201106060 [Chem. 14] Compound 18

R18=—C-CH, compound 19

-44- 201106060 [Chem. 15] Compound 20

0

II C-CH,

-45- 201106060 [Chem. 16] Compound 21

R21 = —C-CH, compound 22

The cellulose ester film of the present invention (the first and second optical compensation layers 3 and 5) contains 0.5 to 30% by mass of the cellulose ester film in order to suppress the fluctuation of the phase difference , and to stabilize the display quality. It is a sugar ester compound of the present invention containing 5 to 30% by mass. (3.3.3) (Meth)Acrylic Compound When the (meth)acrylic compound used in the present invention is contained in an optical compensation film, it is preferably a function of exhibiting negative birefringence in the extending direction -46-201106060 The structure is not particularly limited, and a polymer having a weight average molecular weight of 500 or more and 30,000 or less obtained by polymerizing an ethylenically unsaturated monomer is preferred. (Birefringence test method of (meth)acrylic compound) The (meth)acrylic polymer (compound) was dissolved in a solvent, and after being cast and formed into a film, it was dried by heating, and the film having a transmittance of 80% or more was used. The birefringence evaluation was performed. The Abbe refractometer _4T (manufactured by Atago Co., Ltd.) uses a multi-wavelength light source to measure the refractive index. The refractive index in the extending direction is ny and the refractive index in the in-plane direction of the orthogonal direction is nx. 5 refractive index of 50 nm, for a film of (ny-nx) < 0, wherein the (meth)acrylic polymer is judged to have a negative birefringence with respect to the extending direction. The (meth)acrylic polymer having a weight average molecular weight of 500 or more and 30,000 or less used in the present invention may be a (meth)acrylic polymer having an aromatic ring in a side chain or a (meth)acrylic group having a cyclohexyl group in a side chain. Propionic acid polymer. When the weight average molecular weight of the polymer is 500 or more and 30,000 or less, and the composition of the polymer is controlled, for example, the optical compensation film is a particularly preferred cellulose ester film in the invention, the cellulose ester and the polymer can be improved. Compatibility. When the (meth)acrylic polymer having an aromatic ring in the side chain or the (meth)acrylic acid polymer having a cyclohexyl group in the side chain is preferably a weight average molecular weight of 500 or more and 1,000,000 or less, in addition to the above In addition, it is shown that the cellulose ester film after film formation is excellent in transparency and extremely low in moisture permeability, and is excellent in performance as a protective film for a light plate of No. 47-201106060. The polymer has a weight average molecular weight of 500 or more and 30,000 or less, and thus may be between the oligomer and the low molecular weight polymer. When synthesizing such a polymer, it is difficult to control the molecular weight in general polymerization, and it is preferred to use a method in which the molecular weight is not too large, and to make the molecular weight uniform as much as possible, particularly for the optical compensation film of the present invention. The acrylic polymer is preferably an ethylenically unsaturated monomer Xa having no aromatic ring and hydroxyl group in the molecule and having no aromatic ring in the molecule, an ethylenically unsaturated monomer having a hydroxyl group Xb and excluding Xa and Xb. Polymer X having a weight average molecular weight of 2 000 or more and 300 00 or less obtained by copolymerization of a copolymerized ethylenically unsaturated monomer, or an ethylenically unsaturated monomer Ya having no aromatic ring and ethylene copolymerizable with Ya The polymer Y obtained by polymerization of the unsaturated monomer has a weight average molecular weight of 500 or more and 3,000 or less. [Polymer X, Polymer Y] The method of adjusting the RO and Rth of the optical compensation film of the present invention preferably contains an ethylenically unsaturated monomer Xa having no aromatic ring and a hydroxyl group in the molecule, and has no aromaticity in the molecule. a high molecular weight polymer X having a weight average molecular weight of 2,000 or more and 30,000 or less obtained by copolymerization of a hydroxyl group-containing ethylenically unsaturated monomer Xb and a copolymerizable ethylenically unsaturated monomer excluding Xa and Xb, More preferably, it is a low molecular weight polymer Y having a weight average molecular weight of 500 or more and 3000 or less obtained by polymerizing an ethylenically unsaturated monomer Ya having no aromatic ring and an ethylenically unsaturated monomer copolymerizable with Ya. -48- 201106060 The polymer X used in the present invention has an ethylenically unsaturated monomer xa having no aromatic ring and hydrophilic group in the molecule, and an ethylenically unsaturated monomer Xb having a hydroxyl group in the molecule and having a hydroxyl group. A polymer having a weight average molecular weight of 2,000 or more and 30,000 or less obtained by copolymerization of the copolymerizable ethylenically unsaturated monomer of Xa and Xb is excluded. Preferably, the Xa-based acrylic acid or methacrylic acid monomer having no aromatic ring and hydroxyl group in the molecule, and the Xb-based acrylic acid or methacrylic acid monomer having no aromatic ring and having a hydroxyl group. The polymer X used in the present invention is represented by the following general formula (X): (X) - [Xa]m - [Xb] n - [Xc]p - in the above general formula (X), Xa It means an ethylenically unsaturated monomer having no aromatic ring and a meridine in the molecule, Xb means an ethylenically unsaturated monomer having no aromatic ring in the molecule and having a hydroxyl group, and Xc means that Xa and Xb are excluded. Polymerized ethylenically unsaturated monomer. The m and p systems respectively represent the molar composition ratio. However, m#0, n#〇, m + n + p = 100. The polymer X used in the present invention is preferably a polymer represented by the following general formula (Χ-1). General formula (X-1) -[CH2-C(-R1)(-C02R2)]m-[CH2-C(-R3)(-C〇2R4-OH)-] η - [ X c ] p - In the general formula (Xl), R1 and R3 each represent a hydrogen atom or a methyl group. R2 represents an alkyl group or a cycloalkyl group having 1 to 12 carbon atoms. R4 represents -49-201106060 CH2-, -C2H4- or -C3H6-. Xc represents a monomer unit which can be polymerized with [CH2-C (-Rl)(-C02R2)] or [CH2-C(-R3) (-C02R4-0H)-]. m, n and p represent the molar composition ratio. However, n#0, m + n + p = 100 单体 The monomer constituting the monomer unit of the polymer X used in the present invention is as follows, but is not limited thereto. The term 'hydroxyl group' in X means not only a mesogenic group but also a group having an epoxy oxime chain. The ethylenically unsaturated monomer Xa having no aromatic ring and hydroxyl group in the molecule, for example, methyl acrylate, ethyl acrylate, propyl acrylate (i-, η-), butyl acrylate (n-, i-, s- , t-), amyl acrylate (n-, i-, s-), hexyl acrylate (n-, i-), heptyl acrylate (n-, i-), octyl acrylate (n-, i- ), decyl acrylate (η·, ί-), tetradecyl acrylate (n-, i-), acrylic acid (2-ethylhexyl), acrylic acid (ε-caprolactone), etc. or the above acrylate Change to methacrylate. Among them, preferred are methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, and propyl methacrylate (i-, η-). The monomer having no hydroxyl group in the molecule, and the ethylenically unsaturated monomer having a hydroxyl group Xb having a hydroxyl group is preferably acrylic acid or methacrylic acid ester, for example, acrylic acid (2-hydroxyethyl ester) or acrylic acid (2- Hydroxypropyl ester), acrylic acid (3-hydroxypropyl ester), acrylic acid (4-hydroxybutyl ester), acrylic acid (2-hydroxybutyl ester), or the replacement of such acrylic acid with methacrylic acid, preferably acrylic acid (2) -Hydroxyethyl ester) and (2-hydroxyethyl methacrylate), (2-hydroxypropyl) acrylate, (3-hydroxypropyl) acrylate. -50- 201106060

When Xc is a monomer other than Xa or Xb and a copolymerizable ethylenically unsaturated monomer, it is not particularly limited, and it is preferably one which does not have an aromatic ring.

The moir composition ratio of ma and Xb is preferably in the range of 99:1 to 65:3 5 , more preferably in the range of 95:5 to 7 5:25. Xc's p system is ~1〇. XC can be a plural monomer unit

When the molar composition of Xa is relatively large, although the compatibility with the cellulose ester is good, the retardation 値Rth in the thickness direction of the film becomes large. When the composition of the Mob of Xb is relatively large, the compatibility is deteriorated, but the effect of lowering Rth is high.

When the molar composition ratio of Xb exceeds the above range, haze tends to occur during film formation, and for optimization of these, it is preferred to determine the molar composition ratio of X a ·· Xb. The molecular weight of the high molecular weight polymer X is 5,000 or more and 30,000 or less, more preferably 8,000 or more and 25,000 or less. When the weight average molecular weight is set to 5,000 or more, it is preferable that the optical compensation film has a small dimensional change under high temperature and high humidity and has less curl as a polarizing plate protective film. When the weight average molecular weight is 30,000 or less, the compatibility with the cellulose ester can be improved, the bleeding under high temperature and high humidity can be suppressed, and the haze immediately after the film formation can be suppressed. The weight average molecular weight of the polymer X used in the present invention can be adjusted by a known molecular weight adjustment method. Such a method of adjusting the molecular weight includes, for example, a method of adding a chain shifting agent such as carbon tetrachloride, lauryl mercaptan or octyl thioglycolate. The polymerization temperature is usually from room temperature to 130 ° C, preferably from 50 ° C to 100 ° C -51 - 201106060, but the temperature or polymerization time can be adjusted. The method for determining the average molecular weight is in (3.1.1), and the above method can be used. The low molecular weight polymer Y used in the present invention is a polymer having a weight average molecular weight of from 500 to 3,000 or less obtained by polymerization of an ethylenically unsaturated monomer Ya having no aromatic ring. When the weight average molecular weight is 5 Å or more, the residual monomer of the polymer is reduced, which is preferable. Further, when the temperature is below 3,000, the delay 値R t h can be maintained, which is preferable. Ya is preferably an acrylic or methacrylic acid monomer having no aromatic ring. The polymer Y used in the present invention is represented by the following general formula (Y). - (Y) - [Ya]k - [Yb] q - In the above general formula (Y), Ya represents an ethylenically unsaturated monomer having no aromatic ring, and Yb represents an ethylene copolymerizable with Ya Sexually unsaturated monomer. k and q represent the molar composition ratio, respectively. However, wo, q#〇, k+q = 100 聚合物 The polymer Y used in the present invention is more preferably a polymer represented by the following general formula (Y-1). - General formula (Υ-1) -[CH2-C(-R5) (-CO2R6) ]k-[Yb]q- In the above general formula (Y-1), 'R5' represents a hydrogen atom or a methyl group, respectively. R6 represents an alkyl group or a cycloalkyl group of a carbon number. Yb represents a monomer unit copolymerizable with [CH2-C(-R5)(-C02R6)]. The k and q systems respectively indicate the molar composition ratio. But k#〇, q#0, k + q=100. -52- 201106060

Yb is not particularly limited as long as it is a B-unsaturated monomer copolymerizable with [CH2-C(-R5)(-C〇2r6)] of Ya. Y b can be a complex number. k+q=100 , q is preferably 1 to 30 〇 When the ethylenically unsaturated monomer Ya of the polymer Y obtained by polymerizing the ethylenically unsaturated monomer having no aromatic ring is a two-acidic acid ester, for example, Methyl acrylate, ethyl acrylate, propyl acrylate (i_, n_), butyl citrate (n-, i-, s-, t-), amyl acrylate (n-, i-, s- ), hexyl acrylate (n-, i-), heptyl acrylate (n_, i_), octyl acrylate (n-, i-), decyl hexanoate (n-, i-), acrylic acid Tetraester (n_, i_), cyclohexyl acrylate, (2-ethylhexyl acrylate), acrylic acid (ε-caprolactone), acrylic acid (2-hydroxyethyl ester), acrylic acid (2-hydroxypropyl ester), When (3-hydroxypropyl) acrylate, (4-hydroxybutyl acrylate), (2-hydroxybutyl acrylate): methacrylate, for example, the above acrylate is changed to methacrylate; unsaturated Examples of the acid include acrylic acid, methacrylic acid, maleic anhydride, crotonic acid, itaconic acid and the like.

Yb is not particularly limited as long as it is an ethylenically unsaturated monomer copolymerizable with Ya. For example, vinyl acetate, vinyl propionate, vinyl butyrate, vinyl valerate, and trimethyl ester are preferable. Vinyl acetate, vinyl hexanoate, vinyl decanoate, vinyl dodecanoate, vinyl myristate, vinyl hexadecanate, vinyl stearate, vinyl cyclohexanecarboxylate, Vinyl octoate, vinyl methacrylate, vinyl crotonate, vinyl sorbate, vinyl cinnamate, and the like. Yb can be plural. In the case of synthesizing polymers X and Y, it is difficult to control the molecular weight in general polymerization, and it is preferable to use a method in which the molecular weight is not excessively large and the molecular weight is as uniform as possible -53-201106060. Such a polymerization method is, for example, a method using a peroxide polymerization initiator such as cumene peroxide or a third butyl hydroperoxide, a method of using a polymerization initiator in a larger amount than a general polymerization, and A method of using a chain transfer agent such as a hydrogenthio compound or carbon tetrachloride in addition to a polymerization initiator, a method of using a polymerization inhibitor such as phenylhydrazine or dinitrobenzene in addition to a polymerization initiator, and a use such as Japan JP-A-2000- 1 289 1 1 or JP-A-2000-3448 2 3, a compound having one thiol and a hydroxy group, or a lumps of a polymerization catalyst of the compound and an organometallic compound. A polymerization method or the like can be used in the present invention. In particular, the polymer Y is preferably a polymerization method in which a compound having a thiol group and a hydroxy group in the molecule is used as a chain shifting agent. At this time, the terminal of the polymer γ has a hydroxyl group or a thioether which is generated by a polymerization catalyst and a chain shifting agent. The terminal residue can be used to adjust the compatibility of the polymer Y with the cellulose ester. The valence of the hydroxyl groups of the polymers X and Y is preferably from 30 to 150 [mgKOH/g]. (Method for measuring hydroxyl value) The measurement of the hydroxyl value is based on ns K 0070 (1992). The hydroxyl value is defined as the number of mg of potassium hydroxide required to neutralize the acetic acid bonded to the hydroxyl group when 1 g of the sample is subjected to oximation. Specifically, after the Xg (about 1 g) of the sample was weighed in a flask, 20 ml of an acetamidine reagent (a pyridine was added to 20 ml of acetic anhydride to 400 ml) was appropriately added thereto. The air inlet tube of the flask is equipped with a -54-201106060 glycerin bath heated at 95~100 °C. After 1 hour and 3 minutes, cooling was carried out, and 1 ml of pure water was added from the air cooling tube to decompose acetic anhydride into acetic acid. Next, using a potentiometric titration apparatus, titration was carried out with a solution of mol5 mol/L potassium hydroxide ethanol, and the inflection point of the obtained titration curve was taken as the end point. The blank test is to titrate without adding a sample, and the inflection point of the titration curve is obtained. The hydroxyl number is calculated by the following formula.

The hydroxyl value = {(BC) xfx28.05/X} + D where 'B is the amount (ml) of the 0.5 mol 1 / L potassium hydroxide ethanol solution used in the blank test, (: indicates that it is used for titration The amount of 0.5 mol/L potassium hydroxide ethanol solution (ml), f is the parameter of 〇.5mol/L potassium hydroxide ethanol solution (fact 〇r ), D is the acid value, in addition, 2 8 · 0 5 1/2 of the amount of 1 mol of the potassium hydroxide is 56.11. The polymer X and the polymer Y are excellent in compatibility with the cellulose ester, and are not evaporated or volatilized, and are excellent in productivity, and are retained as a protective film for a polarizing plate. Good, low moisture permeability and excellent dimensional stability. The content of polymer X and polymer γ in the optical compensation film is when the content of polymer X is Xg (% by mass = (mass of polymer X / mass of cellulose ester) When the content of X 100 'polymer γ is Yg (% by mass), it is preferably within the range of the following formulas (i) and (ii). Formula (i) 5 SXg + Yg^35 (% by mass) Formula (ii) 0.05 Yg / (Xg + Yg) ^0.4 The preferred range of (Xg + Yg) of the formula (i) is from 1 〇 to 35% by mass. The polymer X is compared with the polymer γ system. When the total mass of the vitamin ester is 5% by mass or more based on the total amount of -55 to 201106060, it has a sufficient effect on the adjustment delay 値Rth. Further, when the total amount is 35% by mass or less, adhesion to the polarizer PVA is obtained. The polymer X and the polymer Y are directly added, dissolved, or previously dissolved in an organic solvent in which a cellulose ester is dissolved, and are added to the dope as a raw material constituting the slurry described later. (3.4) Ultraviolet absorption The first optical accommodating layer 3 and 5 may contain an ultraviolet ray absorbing agent. The ultraviolet absorbing agent absorbs ultraviolet rays of 400 nm or less to improve durability, and in particular, the transmittance of a wavelength of 370 rim is preferably 1% or less. More preferably, it is 5% or less, and more preferably 2% or less. The ultraviolet absorber used in the present invention is not particularly limited, and examples thereof include an oxybenzophenone-based compound, a benzotriazole-based compound, and a salicylate-based compound. a compound, a benzophenone-based compound, a cyanoacrylate-based compound, a triazine-based compound, a nickel-salted salt-based compound, an inorganic powder, etc. For example, 5-chloro-2-(3,5-di-second butyl) -2-hydroxyphenyl)- 2H-benzotriazole, (2-2H-benzotriazol-2-yl)-6-(linear and side chain dodecyl)-4-methylphenol, 2-hydroxy-4-benzyloxy Benzophenone, 2,4-benzyloxybenzophenone, etc., in addition, for example, Tinubinl09, Tinubinl71, Tinubin234, Tinubin326, Tinubin327, Tinubin328, etc.

The Tinubin class, which is a commercial product of Ciba Japan Co., Ltd., can be used. The ultraviolet absorber suitable for use in the present invention is a benzotriazole-based ultraviolet-56-201106060 absorbent, a benzophenone-based ultraviolet absorber, a triazine-based ultraviolet absorber, and a second-component ultraviolet absorber. Benzophenone UV absorber. For example, the compound represented by the following general formula (d) can be used as the present ultraviolet ray absorbing agent. [Chemistry 17] - General (9)

Wherein R, R2, R3, 4 and R5 may be the same or different and represent a hydrogen atom, a halogen atom, a nitro group, a hydroxyl group, an alkyl group, an alkenyl group, an aryl group, an alkoxy group, a decyloxy group, An aryloxy group, an alkylthio group, an arylthio group, a mono or dialkylamino group, a mercaptoamine group or a heterocyclic group of 5 to 6 members, r4 and ! ^5 performs a closed loop to form a carbon ring of 5 to 6 members. Further, the above-described groups may have any substituent. Specific examples of the benzotriazole-based ultraviolet absorber used in the present invention are exemplified below, but the present invention is not limited thereto. UV-1: 2-( 2'-hydroxy-5'-methylphenyl)benzotriazole UV-2:2-(2, hydroxy-3'' 51-di-t-butylphenyl)benzo Triazole UV-3: 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)benzotriazole UV-4:2-(2'-hydroxy-3',5 '-Di-tert-butylphenyl)·5-chlorobenzotriazine UV-5:2-( 2'-hydroxy-3'·( 3",4",5",6"-tetrahydrobenzene Hyperthyroid-57- 201106060 imine methyl)-5'-methylphenyl)benzotriazole 1; ¥-6:2,2-methylenebis(4-(1,1,3,3- Tetramethylbutyl)-6-( 2H-benzotriazol-2-yl)phenol) UV-7:2-( 2·-hydroxy-3·-t-butyl-51-methylphenyl) -5-chlorobenzotriazole UV-8: 2-(2H-benzotriazol-2-yl)-6-(linear and side chain dodecyl)-4-methylphenol (TINUVIN 171) UV -9: Octyl-3-[3-t-butyl-4-hydroxy-5-(chloro-2H-benzotriazol-2-yl)phenyl]propionate and 2-ethylhexyl-3 a mixture of [3-t-butyl-4-hydroxy-5-(5-chloro-2H-benzotriazol-2-yl)phenyl]propionate (TINUVIN 1 09 ) In addition, benzophenone The ultraviolet absorber is preferably represented by the following general formula (e) Compound. General formula (β)

Wherein Y represents a hydrogen atom 'halogen atom or an alkyl group, an alkenyl group, an alkoxy group and a phenyl group, and these alkyl groups, alkenyl groups and phenyl groups may have a substituent. A represents a hydrogen atom, an alkyl group, an alkenyl group, a phenyl group, a cycloalkyl group, an alkylcarbonyl group, an alkylsulfonyl group or a -CO(NH) „-1-d group, and D represents an alkyl group, an alkenyl group or A phenyl group which may have a substituent. The hydrazine and the n-form represent 1 or 2. The above-mentioned 'hospital group has, for example, a straight or branched aliphatic group which represents a carbon number of 24', and the alkoxy group has, for example, a carbon number of 18 The alkoxy group, the alkene-58-201106060 group, for example, has an alkenyl group, an allyl group, a 2-butenyl group and the like having a carbon number of 16. Further, a substituent of an 'alkyl'alkenyl group or a phenyl group, wherein a halogen Examples of the atom include a chlorine atom, a desert atom, a fluorine atom, a hydroxyl group, a phenyl group (this phenyl group may be substituted by an alkyl group or a halogen atom, etc.), etc. The benzophenone-based ultraviolet absorption represented by the general formula (e) is shown below. Specific examples of the agent, but the present invention is not limited thereto. υν·10: 2,4-dihydroxybenzophenone ϋν·1 1 : 2,2'-dihydroxy-4-methoxybenzophenone UV-12: 2-hydroxy-4-methoxy-5-sulfobenzophenone UV-13··bis(2-methoxy-4-hydroxy-5-phenylphenylphenylmethane) In addition, Disc-shaped compound of a compound having a 1,3,5-triazine ring or the like The first and second optical compensation films 3 and 5 of the present invention may preferably contain two or more kinds of ultraviolet absorbers. Further, the ultraviolet absorber is preferably a polymer ultraviolet absorber. It is particularly preferable to use a polymer type ultraviolet absorber described in JP-A-6-148439. The method of adding a UV absorber is to dissolve an ultraviolet absorber in an alcohol or dichloromethane such as methanol, ethanol or butanol. An organic solvent such as methyl acetate, acetone, dioxol an e or the like, or added to the dope, or directly added to the dope composition. Insoluble as inorganic powder In organic solvents, it can be added to the cement after dispersing it in an organic solvent and a cellulose ester using a dissolver or a sander. The amount of the ultraviolet absorber used is based on the type of the ultraviolet absorber, and -59-201106060 The conditions are the same, and when the dry film thickness of the optical compensation film (optical compensation layer 3, 5) is 30 to 200 μm, it is preferably 〇5 to 10% by mass, more preferably 0.6 to 4% by mass with respect to the optical compensation film. (3.5 Oxidation preventive agent) The oxidation preventive agent is also called a deterioration preventive agent. When the liquid crystal image display device or the like is in a state of high humidity and high temperature, the first 'second optical compensation layer as an optical compensation film may be used. The oxidation preventing agent is preferably contained in the optical compensation film, for example, having a function of slowing down or preventing phosphoric acid of a halogen or a phosphate-based plasticizer due to the amount of residual solvent in the optical compensation film, and decomposing the optical compensation film. Such an antioxidant is preferably a hindered phenol-based compound such as 2,6-di-t-butyl-p-cresol or pentaerythritol-tetrakis[3-(3,5-di-t-butyl-4). -hydroxyphenyl)propionate], triethylene glycol-bis[3-(3-t-butyl-5-methyl-4-hydroxyphenyl)propionate], 1,6-hexanediol Bis[3-(3,5-di-t-butyl-4-ylhydroxyphenyl)propionate], 2,4-bis(n-octylthio)-6-(4-hydroxy-3, 5-di-t-butylanilino)-1,3,5-triazine, 2,2-thio-diethylene bis[3-(3,5-di-t-butyl-4- Hydroxyphenyl)propionate], octadecyl-3-(3,5-di-t-butyl-4-hydroxyl) Phenyl)propionate, hydrazine, Ν'-hexylene bis(3,5-di-t-butyl-4-hydroxy-hydrocinnamylamine), 1,3,5-trimethyl-2,4 ,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)benzene, tris(3,5-di-t-butyl-4-hydroxybenzyl)-isocyanurate, etc. . Particularly preferred is 2,6-di-t-butyl-p-cresol, pentaerythritol-tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], tri- 60-201106060 Glycol bis[3-(3-t-butyl-5-methyl-4-hydroxyphenyl)propionate]. Further, a metal inert agent such as N,N,-bis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propanyl]anthracene or the like can be used. , a phosphorus-based processing stabilizer such as 4-di-tert-butylphenyl phosphite. The amount of such a compound to be added is preferably from 1 ppm to 1.0%, more preferably from 10 to 1,000 ppm, based on the mass ratio of Table 7K to the cellulose derivative. (3·6 particles) The first and second optical compensation films 3, 5 of the present invention preferably contain fine particles used in the present invention, wherein the inorganic compound is, for example, cerium oxide, titanium oxide, aluminum oxide, oxidized cone, carbonic acid. Calcium, talc, clay 'calcined clay, calcined calcium citrate, hydrated calcium citrate, aluminum citrate, magnesium citrate and calcium phosphate. The microparticle system is preferred because it has a low turbidity, and particularly preferably cerium oxide. The average particle diameter of the primary particles of the fine particles is preferably from 5 to 400 nm, more preferably from 10 to 300 nm. These may contain secondary agglomerates having a primary particle diameter of 0·05 to 0.3 μm, and particles having an average particle diameter of 100 to 400 nm may not aggregate or may be contained as primary particles. The content of such fine particles in the optical compensation films 3, 5 is preferably from 0.01 to 1% by mass, particularly preferably from 5% to 0.5% by mass. When the optical compensation films 3 and 5 composed of a plurality of layers of the co-casting method are used, it is preferable to contain the fine particles on the surface. As the fine particles of cerium oxide, for example, those sold under the trade names of AEROSIL R972, -61 - 201106060 R972V, R974, R812, 200, 200V, 300, R202, 0X50, TT600 (manufactured by Japan AEROSIL Co., Ltd.) can be used. As the fine particles of the oxidized pin, for example, those sold under the trade names of A E R Ο S IL R 9 7 6 and R 8 1 1 (manufactured by Japan AEROSIL Co., Ltd.) can be used. The polymer is, for example, a polyoxyalkylene resin, a fluororesin, and an acrylic resin. Preferably, it is a polydecane resin, particularly preferably a three-dimensional network structure, and for example, Tospear 103, Tospear 105, Tospear 108, Tospear 120, Tospear 145, Tospear 3120, and Tospear 2 4 0 (above) The trade name of the manufacturer of polyoxyalkylene (manufactured by the company). Among them, AEROSIL 200V and AEROSIL R972V are particularly suitable for maintaining the turbidity of the low optical compensation film and having a large effect of lowering the friction coefficient. The dynamic friction coefficient of at least one of the faces of the optical compensation films 3, 5 used in the present invention is preferably from 0.2 to 1.0. Various additives may be added in portions to the dope containing the solution of the cellulose ester before film formation, or an additional additive solution may be prepared for in-line addition. In particular, in order to reduce the load of the fine particles on the filter material, it is preferable to carry out the online addition in a part or the whole amount. When the additive solution is added in-line, in order to improve the miscibility with the dope, it is preferred to dissolve a small amount of the cellulose ester. The amount of the cellulose ester is preferably from 1 to 10 parts by mass, preferably from 3 to 5 parts by mass, per 100 parts by mass of the solvent. In the present invention, for on-line addition and mixing, it is preferred to use, for example, static type mixing and stirring. An in-line mixer such as a device (made by Tor ay Engineering Co., Ltd.) or a SWJ (To ray stationary in-pipe mixer Hi-Mixer). -62-201106060 (3.7) Method for producing optical compensation film Next, a method of manufacturing the optical compensation film of the first and second optical compensation layers 3 and 5 of the present invention will be described. As the optical compensation film, a film produced by a solution casting method or a film produced by a melt casting method can be used. The optical compensation film of the present invention is produced by the following steps: a step of dissolving a cellulose ester and an additive in a solvent to prepare a dope. The slurry is cast onto an infinitely moving circulating metal support. The step of drying the cast paste in a web, the step of peeling from the metal support, the step of stretching or width maintaining, the step of further drying, and the step of winding up the finished film. The step of preparing the glue is explained. Although the concentration of the cellulose ester in the cement is lower, the drying load after casting on the metal support can be reduced, so it is preferable 'but if the concentration of the cellulose ester is too rich, the load during filtration increases, and the filtration The accuracy is worse. The concentration is preferably from 10 to 35 % by mass, more preferably from 15 to 25% by mass. The solvent used for the dope may be used singly or in combination of two or more. From the viewpoint of production efficiency, a good solvent and a poor solvent in which a cellulose ester is used in combination are preferred, and a good solvent is obtained from the viewpoint of solubility of the cellulose ester. More people are better. A preferred range of the mixing ratio of the good solvent to the poor solvent is 70 to 98% by mass of the good solvent and 2 to 30% by mass of the poor solvent. » The so-called good solvent and poor solvent are those which can dissolve the cellulose ester used alone. Defined as a good solvent, a person who produces swelling or insolubility alone is defined as a poor solvent. Therefore, when the average degree of acetylation (the degree of substitution of ethyl ketone) of cellulose ester of -63-201106060, the good solvent and the poor solvent may change, for example, when acetone is used as a solvent, the acetate in the cellulose ester ( The ethyl ketone group substitution degree is 2.4), the cellulose acetate propionic acid vinegar is a good solvent, and the cellulose acetate (the acetyl group substitution degree is 2.8) becomes a poor solvent. The good solvent used in the present invention is not particularly limited. For example, there are organic halogen compounds such as dichlorocarbyl or dioxolane, acetone, methyl acetate, methyl acetate, and the like. Particularly preferred is dichloromethane or methyl acetate. Further, the poor solvent used in the present invention is not particularly limited, and for example, methanol 'ethanol, n-butanol, cyclohexan, cyclohexanone or the like is used. Further, it is preferred to contain 0.01 to 2% by mass of water in the gel. Further, the solvent used for the dissolution of the cellulose ester is recovered in the film forming step, and the solvent removed from the film is dried and reused. The recovered solvent may contain a trace amount of an additive added to the cellulose ester, such as a plasticizer, a UV absorber, a polymer, a monomer component, etc., but may be reused if necessary, and may be purified and then used if necessary. . A method of dissolving the cellulose ester in the preparation of the above-mentioned dope can be carried out by a general method. When combined heating and pressurization, it can be heated to above the boiling point of normal pressure. When the solvent is heated at a temperature above the normal pressure of the solvent at a temperature above the normal pressure and the solvent does not boil under pressure, the gel or the block undissolved material called mamaco can be prevented from occurring. good. Further, it is preferred to use a method in which a cellulose ester is mixed with a poor solvent to wet, moist or swell, and then a good solvent is added and dissolved. The pressurization can be carried out by a method of injecting an inert gas such as nitrogen gas or a method of increasing the vapor pressure of the solvent by n @力口 @ -64- 201106060. It is preferable to use a heating system. For example, since the jacket type is easy to control the temperature, the heating temperature of the solvent is preferably higher from the cellulose ester, but when the heating temperature is too high, the pressure is required to be produced. Sexual deterioration. The heating temperature is preferably 45 to 120 ° C, more preferably 70 ° C to 10 ° 5 t. Further, the pressure can be adjusted to a state in which the solvent does not boil. Alternatively, a cooling dissolution method may be used, whereby a solvent such as cellulose methyl ester may be used. Next, the fiber is filtered using a suitable filter material such as filter paper. In order to remove insoluble matter or the like, the filter material is preferably used in an absolute excess, but the absolute filtration accuracy is too small, and there is a problem that the filter material is easy. Therefore, it is preferable that the absolute filtration precision is 〇〇. 8 mm, more preferably 0.001 to 〇. 〇〇 8 mm of the filter material, more preferably 0.003 to 0 filter medium. The material of the filter material is not particularly limited, and a general filter medium such as a plastic filter material such as propylene or Teflon (registered trademark) or a metal filter material can be used because it has no fibers falling off. It is particularly excellent by reducing the impurities contained in the cellulose ester of the raw material. The term "bright spot foreign matter" means that two polarizing plates are arranged in a cross-counter, and an optical film or the like is placed therebetween, and when viewed from the other polarizing plate side, the visible point from the opposite side is observed. (Foreign object) 'The bright spot with a diameter of 〇·〇1 mm or more is externally entered. The point of view, the force becomes larger, the temperature is 6 0 ~ 1 1 0 〇C, and the filtration efficiency of the solution of the acetate ester solution is higher than that of the filter material under the blockage of 006mm, but the filter is removed by poly-stainless steel, and the foreign matter is compared with the side of the ear. The light is leaked by light, and the number is preferably -65 to 201106060 200 pieces/cm2 or less. More preferably, it is 100 pieces/cm2 or less, more preferably 50 pieces/m2 or less, and particularly preferably 0 to 10 pieces/cm2 or less. In addition, the bright spots of 0.01 mm or less are also preferred. The filtration of the dope can be carried out by a usual method, but at a temperature above the boiling point of the solvent, and heating at a temperature in which the solvent does not boil under pressure, while the filtration method, the hydraulic difference before and after the filtration The rise (called differential pressure) is less preferred. The preferred temperature is 4 5 to 1 2 0. (:, more preferably 45 to 70 ° C, more preferably 45 to 55 ° C. The filtration system is preferably small. The filtration pressure is preferably 1.6 MPa or less, more preferably 1.2 MPa or less, more preferably l. Below OMPa, the casting of the dope is described here. The metal support in the casting step is preferably a roller whose surface is mirror-processed by a mirror-finisher's metal support using a stainless steel strip or a cast surface. The width of the casting can be 1~4m. The surface temperature of the metal support in the casting step is -50 °C ~ the temperature of the boiling point of the solvent is not reached, and the drying speed of the fiber web can be made faster when the temperature is higher. Preferably, if the temperature is too high, the fiber web will foam or the flatness will be deteriorated. The preferred support temperature is 〇~40°C, more preferably 5~30°C, or by cooling. Gelating the web 'In a state containing a large amount of residual solvent, the method of peeling off from the drum is also an ideal method. The method of controlling the temperature of the metal support is not particularly limited, and there is a method of blowing hot air or cold air, or A method in which warm water contacts the inside of the metal support. The use of hot water is effective for heat Therefore, it is preferable to shorten the time until the temperature of the metal support reaches a certain level. When hot air is used, a wind having a temperature higher than the target temperature may be used. -66 - 201106060 In order to make the optical compensation film display a good plane The amount of the residual solvent when the fiber web is peeled off from the metal support is preferably from 1 to 150% by mass, more preferably from 20 to 40% by mass or from 60 to 130% by mass, particularly preferably from 20 to 30% by mass or 70 to 120% by mass. In the present invention, the amount of the residual solvent is defined by the following formula: The amount of residual solvent (% by mass) = {(Μ-Ν) / Ν} χ 100 In addition, the lanthanum fiber web or film is manufactured. Or the quality of the sample taken at any time after the manufacture, and the quality of the lanthanum after heating at 1 1 5 ° C for 1 hour. Further, in the drying step of the optical compensation film, the fiber web is peeled off from the metal support, Further, the amount of the residual solvent is preferably 1% by mass or less, more preferably 0.1% by mass or less, and particularly preferably 0% to 0.01% by mass or less. The film drying step is generally carried out by means of drum drying (the web is interactively By configuring it up and down A method in which a plurality of rollers are dried or conveyed by a tenter method while drying. In this case, when an optical compensation film as the first optical compensation layer 3 is produced, a shrinkable film is bonded to the dried fiber. In the case of producing an optical compensation film as the second optical compensation layer 5, it is preferable to perform biaxial stretching treatment. When the optical compensation film of the present invention is produced, it is held by a jig or the like. The tenter method at both ends of the fiber web is particularly preferably extended in the width direction (lateral direction). The peeling tension is preferably 3 Å/m or less. The means for drying the fiber web is not particularly limited. Generally, it can be dried using heat-67-201106060 air, infrared rays, heating rolls, microwaves, etc., but it is preferable to dry with hot air from a simple viewpoint. The drying temperature in the drying step of the fiber web is 40 to 200 t, and it is preferably stepwise. The film thickness of the optical compensation film is not particularly limited, and 10 to 200 μηΐ can be used. In particular, the film thickness is preferably 1 〇 to 1 〇〇 μπι. More preferably, it is 20 to 60 μηι 〇 The optical compensation film of the present invention can be used with a width of l to 4 m. In particular, it is preferable to use a width of 1.4 to 4 m, and particularly preferably 1.6 to 3 m. When it exceeds 4 m, handling becomes difficult. According to the liquid crystal display device 1 described above, the liquid crystal molecules in the liquid crystal cell 4 are aligned in the thickness direction of the liquid crystal cell 4 in the case of black display, and the first and second optical compensation layers 3 and 5 satisfy nxl >nzl> Nyl, nx22ny2> nz2, DSP(Rol) <1 <DSP (Rth2), so that the angle of view is enlarged, the front contrast is improved, and the color shift when viewed in the oblique direction can be prevented (refer to the embodiment). The liquid crystal display device of the present invention will be described with reference to the liquid crystal display device 1 shown in Fig. 1(a), but may be the liquid crystal display device 1A shown in Fig. 1(b). In the liquid crystal display device 1A of FIG. 1(b), the first polarizer 2, the first optical compensation layer 3, the liquid crystal cell 4, and the second optical compensation layer 5' are sequentially laminated from the identification side toward the backlight side. 2 polarizer 6, and the absorption axis 2 of the first polarizer 2 is parallel to the late phase axis 3 of the first optical compensation layer 3, and the absorption axis 2 of the first polarizer 2 is absorbed by the second polarizer 6. The axis 6 is orthogonal, and the slow axis 3J of the first optical compensation layer 3 and the absorption axis 6J of the second polarizer 6 are arranged in a state in which -68 - 201106060 are orthogonal to each other. However, in this Figure 1 (b), the backlight is on the lower side of the figure, but it can also be the upper side. [Second embodiment] Next, a second embodiment of the present invention will be described. The same components as those in the above-described first embodiment are denoted by the same reference numerals and the description thereof will be omitted. Fig. 2 (a) is a view showing a schematic configuration of another liquid crystal display device 1D of the present invention. As shown in the figure, the liquid crystal display device 1 D has the first polarizer 2, the first optical compensation layer 3D, the liquid crystal cell 4, and the second optical compensation layer in a state of being laminated in the following order from the identification side to the backlight side. 5. The second polarizer 6. The first optical compensation layer 3D has a biaxial film (base film) 30 and a liquid crystal layer 31 in this order from the identification side toward the backlight side. More specifically, the absorption axis 2J of the first polarizer 2, the second polarizer 6, and the biaxial film 3 第 first polarizer 2 is orthogonal to the slow axis 30J of the biaxial film 30, and the first The absorption axis 2J of the polarizer 2 is orthogonal to the absorption axis 6J of the second polarizer 6, and the slow axis 30 of the biaxial film 30 is parallel to the absorption axis 6 J of the second polarizer 6. . In Fig. 2, the backlight is on the lower side in the figure, but it may be the upper side. (First optical compensation layer) The first optical compensation layer 3D of the present embodiment has a biaxial film 30 and a liquid crystal layer 30, and is laminated, and the whole satisfies η X 1 > η z 1 > Ny 1, -69- 201106060 DSP (Rol) <1, in other words, a so-called reverse wavelength dispersed Z-plate. The first optical compensation layer 3D preferably has an in-plane retardation 値Rol of 50 to 100 nm, and a thickness 之Rth1 has an absolute 値 of 0 nm to 20 nm. The form of the first optical compensation layer 3 D is not particularly limited. It is preferably a film. The thickness d of the film is preferably from 40 to 100 μm, more preferably from 40 to 70 μm. <Biaxial film> The biaxial film 30 is a film having a refractive index satisfying nx > ny > nZ. In the above-described biaxial film 30, a cellulose resin film similar to that of the first optical compensation layer 3 of the above-described first embodiment can be used. <Intermediate Layer> The optical compensation layer 3D of the present invention may be provided with an intermediate layer (alignment film, which is not shown) which supports the vertical alignment of the liquid crystal between the biaxial film 30 and the liquid crystal layer 31. The intermediate layer of the present invention is composed of a transparent resin. The transparent resin is preferably a binder polymer having a saturated hydrocarbon chain or a polyether chain as a main chain, and more preferably a binder polymer having a saturated hydrocarbon chain as a main chain. Particularly preferred is a resin which is cured by a crosslinking reaction such as ultraviolet rays or electron beams, or a mixture of a crosslinking agent and a resin having a reaction site. The curable resin is preferably, for example, an ultraviolet curable urethane acrylate resin, an ultraviolet curable polyester acrylate resin-70-201106060, an ultraviolet curable epoxy acrylate resin, or an ultraviolet hard alcohol acrylic acid. A acrylate-based resin such as an ester resin or an ultraviolet curable epoxy resin. The ultraviolet curable acrylate-based resin is generally obtained by reacting a polyester isocyanate monomer or a prepolymer with 2' acrylate '2-hydroxyethyl methacrylate (hereinafter, C contains methacrylate, and An acrylate-based monomer having a hydroxyl group such as acrylate or 2 acrylate is easily produced. For example, Japanese Patent Laid-Open No. 59-151 1 1 1 0 can be used, for example, as a violet UV-7510B (Japanese Synthetic Chemicals Co., Ltd. UniDick 1 7-806 (made by Dainippon Ink Co., Ltd.) CORONET L (Japan) Polyurethane type polyester acrylate resin, general example ester polyol can be easily formed when reacting with 2-hydroxyethyl acrylate or 2-hydroxy acrylate. A specific example of the ultraviolet curable epoxy acrylate-based resin is an epoxy acrylate as an oligomer, and a reaction is added to the oligomer, and a photopolymer initiator is reacted. For the generator, those described in 曰1 - 1 05 7 3 8 can be used. The ultraviolet curable polyol acrylate resin is specifically trimethylolpropane triacrylate or di-trimethylolpropane-type polyfluoroethylene. The polyol is reacted with a hydroxypropyl group in the hydroxyethyl enoate, preferably.), 100 parts of the mixture, if the polyester is a single 1 5 1 1 1 2, such as a sexual diluent. This special case, such as four C Acid -71--201106060 ester 'pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol hexaacrylate tetrol, alkyl-modified dipentaerythritol pentaacrylate. The photopolymerization initiator of such a curable resin is specifically, for example, benzoin and a derivative thereof, acetophenone, benzophenone, hydroxybenzophenone, rice ketone, and α-amiiro Ester (α-Amyloxim ester), thioxanthone, etc. and derivatives thereof. Can be used together with a light sensitizer. When an epoxy acrylate-based photopolymerization initiator is used, a sensitizer such as n-butylamine, triethylamine or tri-n-butylphosphine can be used. The photopolymerization initiator or the photosensitizer used in the curable resin composition is 0.1 to 25 parts by mass, preferably 1 to 5 parts by mass, based on 100 parts by mass of the composition. Acrylate resin For example, there are methacrylate, ethyl acrylate, butyl acrylate, benzyl acrylate, cyclohexyl acrylate, ethylene glycol diacrylate 'propylene glycol diacrylate, divinyl benzene, 1,4-cyclohexane Diacrylate, 1, 4-cyclohexyldimethyl diacrylate, trimethylolpropane triacrylate, pentaerythritol tetraacrylate, and the like. Such commercially available products can be suitably selected, for example, Adeca optomer KR • BY system IJ: KR-400, KR-410, KR-5 50, KR-5 66, KR-5 67, 8丫-3208 (Asahi Electrochemical (stock) system; 1 <: 〇 611 ^ 4 8-101-1 <: 1 <:, eight-101-WS, C-3 02, C-401-N, C-501, M-101, M-102, T-102, D-102, NS-101, FT-102Q8, MAG-1-P20, AG-106, M-101-C (Guangrong Chemical Co., Ltd.); SEIKABEAM PHC22 1 0 ( S ) 'PHCX-9 ( K-3 ) ' PHC22 1 3 ' DP-1 0 ' DP- 20 , DP-30 ' P 1 000 , P 1 1 00 , P 1 200 , P 1 3 00 , P 1400 , -72- 201106060 P1500, P1600, SCR9 00 (Daily Seiki Co., Ltd.); KRM703 3, KRM703 9 , KRM7130, KRM713 1 , UVECRYL2920 1, UVECRYL 2 9 2 0 2 (D aice 1 · UCB (shares) RC-5015, RC-5016, RC-5 020, RC-5 03 1, RC-5100, RC-5102, RC-5120, RC-5122, RC-5152, RC-5171, RC-5180, RC-5181 (Daily Ink Chemical Industry Co., Ltd.); OlexNo.340 Clear (China Coatings Co., Ltd.); SanradH-601, RC-750, RC-700, RC-600, RC-500, RCSanrad- 61 1 ' R C-612 (made by Sanyo Chemical Industry Co., Ltd.); SP-1509, SP-1507 (made by Showa Polymer Co., Ltd.); RCC-15C (made by Grace. Japan Co., Ltd.), Aronix M-6 100 ' M -803 0, M-8 060 (East Asia Synthetic Co., Ltd.), NKhard B-420, NKester A-DOG, NKeste A-IBD-2E (Naka Nakamura Chemical Industry Co., Ltd.). Other examples are trimethylolpropane triacrylate, di-trimethylolpropane tetraacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, dioxanediol acrylate, epoxidized acrylate , alkyl modified dipentaerythritol pentaacrylate, and the like. The mixed composition of the crosslinking agent of the present invention and the resin having a reaction site is, for example, polyvinyl alcohol and glyoxal, gelatin, glyoxal or the like. The intermediate layer may contain a fluorine-acrylic acid copolymer resin. The fluorine-acrylic copolymer resin refers to a copolymer of a fluoromonomer and an acrylic monomer, which is particularly preferably a fluorene monomer segment and an acrylic monomer segment. -73- 201106060 (Manufacturing method of intermediate layer) The intermediate layer is a gravure coater, a dip coater, a reverse roll coater, a wire bar coater, a die coater, an ink jet method. The coating composition forming the intermediate layer is applied onto the biaxial film 30, and then dried by heating and hardening is preferably carried out by a known method. The coating amount is a wet film thickness, and is preferably 1 to 40 μm, preferably 0.5 to 30 μm, and the dry film thickness is 0.01 to ΙμΐΏ, preferably 0.02 to 0.7 μm. The light source for the UV curing treatment may be used without any particular limitation as long as it is a light source capable of generating ultraviolet rays. For example, a low pressure mercury lamp, a medium pressure mercury lamp, a high pressure mercury lamp, an ultra high pressure mercury lamp, a carbon arc lamp, a metal halide lamp, a xenon lamp, or the like can be used. The irradiation conditions vary depending on the lamps, and the irradiation amount of the active rays is usually 5 to 500 mJ/cm2, preferably 5 to 150 mJ/cm2. Further, when the active wire is irradiated, the tension is preferably applied while the tension is applied in the transport direction of the biaxial film 30, and it is more preferable to apply the tension in the width direction as well. The tension imparted is preferably from 3 0 to 3 ΟΟΝ/m. The method of imparting the tension is not particularly limited, and the tension can be imparted to the conveyance direction on the back roll, or the tension can be imparted in the width direction or the two-axis direction by the tenter. Thereby, a film excellent in planarity can be obtained. The coating composition forming the intermediate layer may contain a solvent. The organic solvent contained in the coating composition can be appropriately selected, for example, from hydrocarbons (for example, toluene, xylene), alcohols (for example, methanol, ethanol, isopropanol, butanol, cyclohexanol), and ketones (for example, acetone). , methyl ethyl ketone, methyl isobutyl ketone, etc.) -74- 201106060, esters (such as methyl acetate, ethyl acetate, methyl lactate, etc.), glycol ethers, other organic solvents or these Can be mixed. The organic solvent is preferably propylene glycol monoalkyl ether (alkyl group having 1 to 4 carbon atoms) or propylene glycol monoalkyl ether acetate (alkyl group having 1 to 4 carbon atoms). The content of the organic solvent is preferably from 5 to 80% by mass in the coating composition. <Liquid crystal layer> The liquid crystal layer 31 has a refractive index satisfying nz > nx = ny, that is, a so-called positive C plate. The liquid crystal layer 31 preferably has the following characteristics. 0 ^ Ro ^ 1 0 - 5 00 ^ Rth ^-100 The liquid crystal layer 3 1 directly applies a solution of a liquid crystal material or a liquid crystal to the biaxial film 30, or is applied to the intermediate layer, and is dried and heat-treated. (also referred to as alignment treatment), which is formed by fixing liquid crystal alignment by ultraviolet curing or thermal polymerization, and has a phase difference caused by a rod-like liquid crystal aligned in the vertical direction. The orientation in the vertical direction means that the rod-like liquid crystal is in the range of 70 to 90 (the vertical direction is 90) with respect to the film surface of the biaxial film 30 as a support. Even if the rod-like liquid crystal is obliquely aligned with respect to the biaxial film 30, the alignment angle can be gradually changed to perform alignment. It is preferably in the range of 80 to 90°. The liquid crystal layer 31 is aligned with a retardation layer formed of a rod-like liquid crystal having a vertical direction in the range of 0 to 10111111 and 11111 of -5 () 0 to -10011111. Ro is better -75- 201106060 is a range of 0~5nm. When the rod-like liquid crystal is aligned to form the liquid crystal layer 31, the above-mentioned medium film of the vertical alignment agent in which the crystal material is arranged in the vertical direction can be used. The liquid crystal material is vertically aligned and fixed. The liquid crystal material itself is vertically aligned at the air interface. The method in which the control force reaches the interface opposite to the air interface and the alignment film does not constitute a simplification is preferable. For the specific method of aligning the liquid crystal material in a vertical direction, a method of using a crosslinked product of a block polymer composition of an acid block polymer to a film or the like, such as a special opening, can be used. In the method of the vertical alignment film, and the conventional method of applying the air interface vertical alignment, the alignment of the rod-like liquid crystal layer, the film thickness control, and the ultraviolet ray are performed in the characteristic range of the above-mentioned Ro and Rth. Hard, tilt control and control of the pre-tilt angle of the support (the biaxial film interface. The liquid crystal layer 31 can be a liquid crystal regularity at a predetermined temperature, and is formed by hardening. The upper limit of the temperature is not particularly limited as long as it is the temperature of the cellulose ester film of the substrate. Specifically, from the viewpoint of easiness of control of the process temperature and holding, it is preferably 120 ° C or less. More preferably, it is 1 〇〇. (: It is considered that the liquid crystal material of the liquid crystal phase is more suitable for use. In addition, it is shown that the interlayer of the coating liquid is used (when the alignment is performed, the alignment is required, such as a special methyl group in Japan) The composition of the olefin is described in the case where the method of using the agent is used, preferably at a temperature of 30), and the liquid crystal material exhibits a liquid crystal phase at a temperature which is not damaged by the dimensional accuracy of the liquid crystal. -76-201106060 When the lower temperature limit is used as a polarizing plate, the liquid crystal material can maintain the temperature. The liquid crystal material used for the liquid crystal layer 31 is preferably a polymerizable material. The polymerizable liquid crystal material can be used by irradiation of the predetermined active radiation. In the state of polymerization, the vertical alignment state is solidified. The polymerizable liquid crystal material may be any one of a polymerizable liquid crystal monomer, a polymerized oligomer, or a polymerizable liquid crystal polymer, and may be mutually mixed with a polymerizable liquid crystal material in the above. The polymerizable liquid crystal monomer is preferably used because it has a high degree of sensitivity in the alignment. The specific polymerizable liquid crystal monomer has, for example, the rod-like liquid crystal compound (I) of the following general formula (1), and the following general formula ( 2) The cleavage liquid crystalline compound (II). The compound (the oxime may be used in combination of two or more kinds of compounds included in the general poor, and the compound may be mixed as well. In addition, two or more kinds of the compounds of the general formula (2) may be used in combination with one or more compounds (I) and one or more kinds of the compounds (II). After the liquid crystal is used, vertical) indicates the stick: (1) (II) use.

X

O-CCH, R2 -77- (2) 201106060 [Chem. 20] ^-CQ-CH2C-Cj〇-CH2 represents the general formula (1) of the compound (I), and R1 and R2 represent hydrogen or methyl, respectively. However, from the breadth of the temperature range in which the liquid crystal phase is displayed, Ri & R2 are preferably hydrogen. X may be any of hydrogen, chlorine, bromine, iodine, an alkyl group having a carbon number of 1 to 4, a methoxy group, a cyano group, or a nitro group, but chlorine or a methyl group is preferred. Further, in the range of a and b names Μ & 2 to 1 2 of the chain length of the alkyl group of the (meth) M olefin oxy group at the both ends of the molecular chain of the compound (I) and the spacer of the aromatic ring, It may be any integer, but is preferably in the range of 4 to 10, more preferably in the range of 6 to 9. In the present invention, the polymerizable liquid crystal oligomer or the polymerizable liquid crystal polymer can be appropriately selected from the conventional materials proposed by the prior art. For example, a polymerizable rod-like liquid crystal compound can be used, for example, Makromol.

Chem., vol. 190, 22 5 5 (19 9 9), Advanced Materials 5, 107 (1993), US Patent No. 4683327, the same as 5622648, the same as 5770 1 07, international Japanese Laid-Open Patent Publication No. H09/22586, the same as Japanese Patent Publication No. 95/24455, the same as the Japanese Patent Publication No. 97/00600, the same as the Japanese Patent Publication No. 9/8/3,500, and the Japanese Patent Publication No. H08-52905 Japanese Patent Publication No. 6-16616, Japanese Patent Publication No. 7-110469, Japanese Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. The compounds described in the publications of JP-A No. 2005-103, and JP-A-2005-121827, and JP-A-2002-30042. In the present invention, in addition to the polymerizable liquid crystal material, a photopolymerization initiator can be used as necessary. When the polymerizable liquid crystal material is polymerized by electron beam irradiation, a photopolymerization initiator is sometimes not required. However, when it is generally used, for example, by ultraviolet (UV) irradiation, a photopolymerization initiator is usually used to promote polymerization. The photopolymerization initiator is, for example, benzoin (also known as biphenyl hydrazine), benzoin isobutyl ether, benzoin isopropyl acid, benzophenone, benzamidine benzoic acid, methyl benzoyl benzoate. , 4-benzylidene-4'-methyldiphenyl sulfide, benzyl methyl ketal, dimethylaminomethyl benzoate, 2_n_butoxyethyl.4_monomethyl 1 Female basic formic acid vinegar, p-monomethylaminobenzoic acid isotonic vinegar, 3,3,-dimethyl-4-methoxybenzophenone, methylolbenzate, 2-sheet -1 -(4-(methylthio)phenyl)-2- morpholinylpropan-]-one, 2-benzyl-methyl-l-yl-phenylene phenyl)-Dingyuan-1 _ketone, ι_(4·dodecylphenyl)-2.hydroxy-2-methylpropan-1-one, i-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-benzene Propane-oxime-ketone, ^(4-isopropylphenyl)-2-hydroxy-2-methylpropan-1-one, 2-chlorothioxanthone, 2,4-diethylthioxanthone, 2,4-diisopropylthioxanthone, 2,4-dimethylthioxanthone, isopropylthioxanthone, or 1-chloro-4-propoxythioxanthone. The amount of the photopolymerization initiator to be added is generally preferably from 0.01% to 20%, more preferably from 0.1% to 10%, still more preferably from 5% to 5%, and may be added to the polymerizable liquid crystal material of the present invention. . In addition to the photopolymerization initiator, a sensitizer may be added to -79-201106060 within the range not impairing the object of the present invention. The film thickness of the liquid crystal layer 31 in the present invention is preferably in the range of from 0.1 μm to 10 μm, more preferably in the range of from 0.2 to 5 μm. The polymerizable liquid crystal material is used by preparing a composition for forming a liquid crystal layer such as a photopolymerization initiator or a sensitizer, and is applied to a substrate (a biaxial film 30) to form a layer for forming a liquid crystal layer. The method of forming a layer for fixing the liquid crystal alignment may be, for example, a method of previously forming a dry film or the like, laminating the layer for fixing the liquid crystal alignment layer on the substrate, or dissolving or melting the liquid crystal composition on the substrate. However, in the present invention, it is preferred to use a coating composition in which a solvent is added and a coating composition for dissolving other components as a liquid crystal composition, and to apply a layer to fix the liquid crystal alignment by applying a solvent to the substrate. This method is simpler in comparison with other methods. The solvent is not particularly limited as long as it is a solvent which can dissolve the solvent such as the polymerizable liquid crystal material and does not lower the properties of the transparent resin film, and specifically, benzene, toluene, xylene, and η-butylbenzene can be used. Hydrocarbons such as diethylbenzene and tetralin; ethers such as methoxybenzene and 1,2-dimethoxybenzene diethylene glycol dimethyl ether; acetone, methyl ethyl ketone, methyl iso a ketone such as butyl ketone, cyclohexanone or 2,4-pentanedione; ethyl acetate, ethylene glycol monomethyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, Or an ester of γ-butyrolactone or the like; a guanamine solvent such as 2-pyrrolidone, fluorenyl-methyl-2-pyrrolidone, dimethylformamide or dimethylacetamide; chloroform or dichloromethane a halogenated solvent such as carbon tetrachloride, dichloroethane, tetrachloroethane, trichloroethylene, tetrachloroethylene, chlorobenzene or o-dichlorobenzene; t-butanol, di-80-201106060 acetol Alcohols such as glycerin, glycerin acetate, ethylene glycol, triethylene glycol 'hexanediol, ethylene glycol monomethyl ether, ethyl cellosolve, or butyl cellosolve: phenol, Phenols such as chlorophenol, etc. or two or more. When only a single solvent is used, the solubility of the polymerizable liquid crystal material or the like may be insufficient or the substrate (the biaxial film 30) may be eroded as described above. However, mixing two or more solvents can avoid this undesirable situation. Among the above solvents, a solvent alone is preferably a hydrocarbon solvent and an ethylene glycol monoether acetate solvent, and a mixed solvent is preferably an ether or a mixture of a ketone and an ethylene glycol. The concentration of the solution depends on the solubility of the polymerizable liquid crystal material or the thickness of the liquid crystal layer to be produced, and thus cannot be limited, but it is usually preferably from 1% to 60%, more preferably at 3%. Adjust within ~40% range. The composition for forming a liquid crystal layer used in the present invention may be added to a compound other than the above in the range which does not impair the object of the present invention. The compound which can be added is, for example, a polyester (meth) acrylate obtained by reacting a polyester prepolymer obtained by condensing a polyol with a monobasic acid or a polybasic acid with (meth)acrylic acid; After the two isocyanate groups are reacted with each other, 'the reaction product and the poly(meth)acrylate obtained by (meth)acrylic acid; the bisphenol A type epoxy resin, the biguanide F type epoxy Resin, novolak type epoxy resin, polycarboxylic acid polyglycid vinegar, polyol polyglycidyl ether, aliphatic or alicyclic epoxy resin, amine epoxy resin, trisphenol methane epoxy resin, dihydroxybenzene -81 - 201106060 A photopolymerizable compound such as an epoxy (meth) acrylate or a acrylic acid group or a methacrylic acid group, which is obtained by reacting an epoxy resin such as an epoxy resin with (meth)acrylic acid The photopolymerizable liquid crystal compound, such as a key salt or a fluorinated acrylate polymer described in JP-A-2007-45993, is a composition for forming a liquid crystal layer according to the present invention, and the amount of such a compound is added. Selected object without affecting the scope of the present invention, a general, the liquid crystal layer of the present invention is formed of 40% of the composition is preferably less, more preferably 20% or less. By adding these compounds, the hardenability of the liquid crystal material in the present invention is enhanced, the mechanical strength of the obtained liquid crystal layer is increased, and the stability is improved. Further, a surfactant for forming a liquid crystal layer in which a solvent is blended may be added with a surfactant or the like in order to facilitate coating. The surfactant which can be added is, for example, a cationic surfactant such as an imidazoline, a quaternary ammonium salt, an alkylamine oxide or a polyamine derivative; a polyoxyethylene-polyoxypropylene condensate, a primary or secondary alcohol; Hydroxyethyl ester, alkylphenol hydroxyethyl ester, polyethylene glycol and ester thereof, sodium lauryl sulfate, ammonium lauryl sulfate, ammonium lauryl sulfate, alkyl-substituted aromatic sulfonate, alkyl phosphate An anionic surfactant such as an aliphatic or aromatic sulfonic acid formal water condensate; an amphoteric surfactant such as lauryl guanamine propyl betaine or lauryl acetoxy betaine; polyethylene glycol fatty acid ester Nonionic surfactants such as polyoxyethylene alkylamines; perfluoroalkyl sulfonates, perfluoroalkyl carboxylates, perfluoroalkyl ethylene oxide adducts, perfluoroalkyl three Methylammonium salt, oligomer containing perfluoroalkyl group, hydrophilic group, oligomer containing perfluoroalkyl group, oleophilic group, urethane containing perfluoroalkyl group, etc. -82- 201106060 A fluorine-based surfactant or the like. The amount of the surfactant to be added depends on the type of the surfactant, the type of the liquid crystal material, the type of the solvent, and the type of the alignment film of the coating solution, and the polymerizable liquid crystal material contained in the solution is 1〇1? ) 111 to 10% is better, more preferably 1 0 0 ppm to 5 % 'better than 0 · 1 to 1% of the range. Examples of the method of applying the composition for forming a liquid crystal layer include a spin coating method, a roll coating method, a printing method, a dip-drawing method, a die coating method, a casting method, a bar coating method, and a blade coating method. Method, spray coating method, gravure coating method, reverse roll coating method 'or extrusion coating method, and the like. After the composition for forming a liquid crystal layer is applied, the solvent is removed, for example, air-dried by heat removal or reduced pressure, or may be removed by a combination of these methods. The solvent is removed to form a layer that fixes the liquid crystal alignment. The step of hardening the polymerizable liquid crystal material is to impart heat energy for curing the polymerizable liquid crystal material, but it is usually hardened by irradiating ionizing radiation having the ability to generate polymerization. If necessary, a polymerization initiator may be contained in the polymerizable liquid crystal material. The ionizing radiation is not particularly limited as long as it can polymerize the polymerizable liquid crystal material. However, ultraviolet light or visible light is preferably used from the viewpoint of easiness of the device, etc., and light having a wavelength of 150 to 500 nm is preferable. Preferably, the wavelength is from 250 to 450 nm, more preferably from 300 to 400 nm. In the present invention, a method of performing radical polymerization by irradiating ultraviolet rays (UV) as an active radiation by a polymerization initiator to generate radicals by ultraviolet rays is preferred. The use of UV as a method of active radiation is an established technique, so it includes a polymerization initiator to be used, and can be easily applied to the present invention. -83-201106060 A light source for irradiating the ultraviolet light, for example, a low-pressure mercury lamp (sterilization, lamp, fluorescent light) Chemical lamps, black lamps), high-pressure discharge lamps (high-pressure mercury lamps, metal halide lamps) or short arc discharge lamps (ultra-high pressure mercury lamps, xenon lamps, mercury lamps). It is recommended to use metal halide lamps, xenon lamps, high pressure mercury lamps, and the like. The intensity of the shot can be appropriately adjusted depending on the composition of the polymerizable liquid crystal material used for forming the liquid crystal alignment layer or the amount of the photopolymerization initiator. The alignment fixation step of irradiating the active radiation is performed by the treatment temperature in the step of forming the upper % liquid crystal layer formation layer, that is, the temperature condition in which the polymerizable liquid crystal material becomes the liquid crystal phase, and may be used lower than the liquid crystal phase. In the case of the above liquid crystal display device 1 D, it is a matter of course that the first optical compensation layer 3D has the biaxial film 30 and the positive C. Since the liquid crystal layer 31 of the board has a laminated structure, in comparison with the case where the first optical compensation layer is formed of a single layer, in order to exhibit the effect of widening the viewing angle, the magnitude of the phase difference necessary to be applied to the optical compensation layer can be remarkably reduced. Specifically, when the first optical compensation layer is formed in a single layer, in order to exhibit the viewing angle expansion effect, it is necessary to provide a very large phase difference of the retardation 値Ro Lan 27 5 to the optical compensation layer, and the first optical compensation layer 3D is In the entire optical compensation layer 3D, a viewing angle expansion effect can be exhibited as long as a phase difference of 1⁄2 or less is given by the delay 値Ro = 50 to 100. Therefore, unlike the case where the first optical compensation layer is formed of a single layer, it is possible to prevent the optical compensation layer from increasing due to the influence of slight optical axis deviation in the plane, so that the -84-201106060 low phase difference unevenness can be maintained. High frontal contrast (see example). In the second embodiment, the liquid crystal display device of the present invention is described with reference to the liquid crystal display device 1D shown in Fig. 2(a), but may be the liquid crystal display device 1E shown in Fig. 2(b). The liquid crystal display device 1E of FIG. 2(b) is formed by laminating the first polarizer 2, the liquid crystal layer 31 of the first optical compensation layer 3D, the biaxial film 30, and the liquid crystal cell from the identification side toward the backlight side. 4. The second optical compensation layer 5 and the second polarizer 6, and the absorption axis 2J of the first polarizer 2 is parallel to the slow axis 30J of the biaxial film 30, and the absorption axis 2J of the first polarizer 2 is 2 The absorption axis 6 of the polarizer 6 is orthogonal, and the slow axis 30J of the biaxial film 30 and the absorption axis 6 of the second polarizer 6 are orthogonal to each other. However, in this Figure 2 (b), the backlight is on the lower side of the figure, but it can also be the upper side. Further, the present invention is not limited to the above-described first and second embodiments, and can be appropriately changed or improved. For example, the liquid crystal display device of the present invention is not limited to the configuration of Figs. 1 and 2, and may include other members. For example, a color filter may be disposed between the liquid crystal cell 4 and the polarizers 2, 6. An antireflection treatment or a hard coat may be applied to the surfaces of the protective films of the polarizers 2 and 6. Further, it is also possible to use a person who imparts conductivity to the constituent members. When used as a transmissive type, a backlight having a cold cathode or a hot cathode fluorescent tube, or a light emitting diode, a field effect emitting element, and an electroluminescence element as a light source can be disposed on the back surface. At this time, the arrangement of the backlight may be on the upper side of FIGS. 1 and 2 or on the lower side. Further, a reflective polarizing plate or a diffusing plate, a crucible sheet or a light guide plate may be disposed between the liquid crystal cell 4 and the backlight. As described above, the liquid crystal display device of the present invention may be of a reflective type. In this case, only one of the polarizing plates may be disposed on the identification side, or on the back side of the liquid crystal cell 4 or the lower side of the liquid crystal cell 4 -85-201106060 The inner surface is provided with a reflective film. Of course, the light before the use of the aforementioned light source can be set on the identification side of the liquid crystal cell. [Embodiment] Hereinafter, the present invention will be specifically described by way of Examples and Comparative Examples, but the present invention is not limited thereto. <<Production of Optical Compensation Film Z1-Z9>> Optical compensation films Z1 to Z9 shown in Table 1 below were produced as samples of the first optical compensation film 3 in the above embodiment. • 86 - 201106060 [一嗽] Liquid crystal film thickness (μιη) (N &lt;N oo o T—H 1 &lt;N cn substrate film thickness (μηι) oo cn in VO ^T) 褂^ 〇r—^ ο O CO rn 1-H 〇T—H o Adding dose (parts by mass) 1 mmmm 1 m Additive 1 Additive 2 Additive 2 Additive 2 Additive 2 1 Additive 2 Adding dose (parts by mass) Ο Ο ooo 〇o Additive 1 Additive 1 Additive 1 Additive 1 Additive 1 Additive 1 Additive 1 Additive 1 Resin c PQ CQ CQ PQ U PQ Substrate CN &lt; cn ^ inch &lt; ^T) &lt; 00 &lt; 〇 \ &lt; Film Z1 Film Z2 Film Z3 Film Z4 N Puff M film Z8 film Z9 -87- 201106060 (Preparation of cellulose ester mixture) Cellulose ester A (cellulose acetate propionate) 100 parts by mass of additive 1 1 1 0 parts by mass of dimerized methane 3 00 5 parts by mass of ethanol, the above components were placed in a sealed container, and the mixture was completely dissolved by heating and stirring, and then filtered using an Augmentation filter paper No. 24, which was prepared by using an Anisin filter paper, to prepare a cellulose ester mixture. This mixture was filtered using finemet NF manufactured by Nippon Seisaku Co., Ltd. However, the above cellulose ester A means a cellulose ester having an ethyl ketone group substitution degree of 1.6, and a propylene group substitution degree of 0.9, as shown in the following Table 2. The above-mentioned additive oxime is a sugar ester compound represented by the following compound 3, as shown in Table 3 below. [Table 2] Cellulose ester ethyl sulfonyl group degree of substitution Total thiol group substitution degree A acetyl group 1.6, propyl fluorenyl group 0.9 2.5 B acetamyl group 1.9, propyl fluorenyl group 0.7 2.6 C acetyl group 2.4, poly ε- Ester group 0.3 2.7 D Ethyl 2.9 2.9 [Table 3] Additive additive 1 Sugar ester compound 3 Additive 2 Acrylic compound DSP 値 rising agent 1 Square fragrant terminal polyester compound 18 'DSP 値 rising agent 2 (Special opening 2007 -2491 Interesting formula (II) exemplified compound 334) -88- 201106060 Compound 3

ό II • c - Ο average degree of substitution 7.0 (modulation of cerium oxide dispersion diluent) AEROSIL 972V (manufactured by AE AEROSIL) 10 parts by mass (the average particle size of secondary particles is 16 nm, and the apparent specific gravity is 90 g/L) 80 parts by mass or more of ethanol was stirred and mixed for 30 minutes using a dissolver, and then dispersed by Manton-Gaulin (high pressure dispersing device) to prepare a cerium oxide dispersion diluent. The liquid turbidity after dispersion was 200 ppm. 80 parts by mass of methylene chloride was placed in the cerium oxide dispersion under stirring, and the mixture was stirred for 30 minutes using a dissolver to prepare a cerium oxide dispersion diluent. (Preparation of the dope 1) 1 part by mass of the cerium oxide dispersion diluted with respect to the cellulose ester mixture obtained as described above, and sufficiently stirred to prepare a sizing liquid (the substrate of the optical compensation film Z1) Production of Film A1) Using a belt casting apparatus, the dope 1 was uniformly cast on a stainless steel belt support at a temperature of 35 ° C and a width of 1 800 mm. The solvent was evaporated with a stainless steel belt support until the residual solvent amount became 1 〇〇%, and peeled off from the stainless steel belt support. The solvent -89-201106060 of the fiber web of the peeled cellulose ester film was evaporated at 55 ° C, and heat of 140 to 160 ° C was applied while extending 140.00 times in the width direction using a tenter. The amount of residual solvent at the beginning of the extension was 1 5%. Then, the drying zone of 130 ° C was conveyed by a plurality of rollers while drying was completed, and an embossing force of a width of 15 mm and an average height of 1 Ομηι was applied to both ends of the film to wind up the initial tension. 22ON/m and a final tension of 110 N/m were wound around a winding core to obtain a base film (biaxial film) Α1 of an optical compensation film Ζ1 having a dry film thickness of 60 μm. (Production of base film Α2 to 5, 8, and 9 of optical compensation film Ζ2 to 5, 8, and 9) As shown in Table 1 above, except for changing cellulose ester type, additive type, and additive amount, film thickness and width were In the same manner as the stretching ratio of the direction, the base film Α2 to 5, 8, and 9 of the optical compensation film Ζ 2-5, 8, and 9 were prepared almost in the same manner as in the case of the base film Α1. However, in Table 1, "Β" and "C" in the "resin" column indicate the cellulose esters B and C of the above Table 2, wherein C specifically uses a glucose unit of 1 mol, and grafts ε- The average molar number (MS) of caprolactone is 0.72, the average degree of substitution (DS) of the graft chain (grafted caprolactone) is 0.3, and the average degree of polymerization of ε-caprolactone of the graft chain (DPn) ) is 5.4, and the average degree of substitution of hydroxyl groups DS ( Ο Η ) is 0.3. In addition, the "additive 2" in the "additive type" column indicates the additive 2 (acrylic compound) of the above Table 3, and specifically, the acrylic compound synthesized as follows. [Synthesis of Acrylic Compound] -90- 201106060 In a glass flask equipped with a stirrer, two dropping funnels, a gas introduction tube, and a thermometer, the monomer and the ratio (mol ratio) described in Table 4 below were charged. 4 〇g of Xa and Xb, 2 g of thiopropyl propionic acid of chain transfer agent, and 30 g of carbendate were then heated to 90 °C. Thereafter, 60 g of the mixture of the monomers Xa and Xb of the type and ratio (molar ratio) described in Table 4 was dropped from the dropping funnel described therein for 3 hours while the funnel was dissolved in toluene of 4 g. Nitrogen diisobutyronitrile 〇.4g took 3 hours to drip. Then, 0.6 g of azobisisobutyronitrile dissolved in 56 g of toluene was added dropwise for 2 hours, and the reaction was continued for 2 hours to obtain a polymer X. The obtained polymer X was a solid at normal temperature. The weight average molecular weight of the polymer X is shown in Table 4 by the following measurement method. [Table 4] Polymer Xa Xb Polymerization average molecular weight Monomer type Ratio (%) Monomer type Ratio (%) MMA 80 HEA 20 4500 The MM A and HE A systems described in Table 4 are abbreviations of the following compounds. MMA: methyl methacrylate HE A : 2-hydroxyethyl acrylate (measurement of weight average molecular weight) The measurement of the weight average molecular weight was carried out by gel permeation chromatography. The measurement conditions are as follows. -91 - 201106060 Solvent: Dichloromethane column: Shodex K806, K80 5, K8 03 G (Show connection of 3 joints of Showa Denko Co., Ltd.) Column temperature: 2 5 °C Sample concentration: 〇. 1 mass% Detector: RI Model 504 (made by GL Science) Pump: L60 00 (Hitachi, Ltd.) Flow: 1 · Oml/min Calibration curve: used in accordance with standard polystyrene STK standard polystyrene (Tosoh Corporation) ) The calibration curve of 13 samples up to Mw=1000000~5〇〇. 1 3 Samples are used at approximately equal intervals. &lt;Production of Optical Compensation Film Z1&gt; An intermediate layer and a liquid crystal layer were formed on the base film A1 obtained as described above, and an optical compensation film Z1 was produced as shown in Table 1 above. (Formation of intermediate layer) 25 parts by mass of 290 parts by mass of 685 parts by mass of 〇.〇5 parts by mass of urethane acrylate oligomer (UV-7510B Japan Synthetic Chemical Co., Ltd.) Propylene glycol monomethyl ether isopropanol light Polymerization initiator (Lucirin TPO (made by BASF)) -92- 201106060 This coating liquid was applied onto the base film A1 using a metal wire bar #3, and dried at 8 ° C for 30 seconds, and then ultraviolet rays were 120 mJ. /mm irradiation for 10 seconds to harden to form an intermediate layer. The film thickness of the intermediate layer after drying was 0.5 μm. (Formation of liquid crystal layer (anisotropic layer)) 20 parts by mass of ultraviolet polymerizable liquid crystal material (manufactured by UCL0 18 Dainippon Ink Chemical Industry Co., Ltd.) propylene glycol monomethyl ether acetate 80 parts by mass of photopolymerization initiator 〇.〇 4 parts by mass (LucirinTPO (made by BASF)) hindered amine 〇 · 〇 2 parts by mass LS-765 (made by Sankyo Lifetec Co., Ltd.) Vertical alignment agent 〇. 〇 3 parts by mass (Shin-Etsu Silicon Co., Ltd. X-22) -161A) This polymerizable liquid crystal layer coating liquid was applied onto the intermediate layer by a die coater. The film was heated and dried in an atmosphere of 80 ° C for 1 minute until the temperature of the liquid crystal layer became 65 ° C, and then rapidly cooled to 28 ° C to align the liquid crystal material. The solid-liquid crystal phase shift temperature of the ultraviolet-polymerizable liquid crystal compound was previously confirmed to be 23 ° C. The liquid crystal phase - the isotropic liquid phase transition temperature was 7 ° C. After the liquid crystal material was aligned, the ultraviolet ray of 2500 mJ / m m was irradiated to the liquid crystal layer at an oxygen concentration of 0.2% and a temperature of 28 ° C for 1 sec., and the polymerizable liquid crystal composition was cured to form a liquid crystal layer. The thickness of the liquid crystal layer was 1.2 μm. -93 - 201106060 &lt;Production of Optical Compensation Films Z2 to 4' 8 '9&gt; As shown in Table 1 above, the substrate films A2 to 4, 8, and 9 were used to change the thickness of the liquid crystal film, and the optical compensation film was substantially The optical compensation films Z 2 to 4, 8, and 9 were also produced in the same manner as z 1 . &lt;Production of Optical Compensation Film Z5&gt; As shown in Table 1 above, the base film A 5 was directly used as the optical compensation film Z5. &lt;Production of Optical Compensation Film Z6&gt; In addition to the stretching ratio in the width direction being changed to 1·〇1 and the film thickness being 150 μm, both sides of the film A6 produced in the same manner as the base film A2 were interposed with an acrylic adhesive. The layer (thickness 15 μmη) is bonded to a shrinkable film (manufactured by Toray Industries, Ltd., trade name "torayfan B02873"). Then, the length of the film is maintained by a roll stretching machine, and the length is in an air circulating oven at 180 ° C. After the direction was extended 1.5 times, the shrinkable film was peeled off together with the acrylic pressure-sensitive adhesive layer to prepare an optical compensation film Z6. <Production of Optical Compensation Film Z7> In ZEONORZF-14-100 (average refractive index = 1.52 ' Tg = 136 ° C, Ro = 3. 〇 nm, Rth = 5.0 nm (share) oputesu) on both sides, between the acrylic adhesive layer (thickness 15μπι) bonded shrink film (Dongli (share) system The product name is "t〇rayfanB02873"). Thereafter, a roll stretching machine was used to maintain the length direction of the film, and in the air circulating oven of 146 eC, the shrink film and the compensation film Z7 were used. After extending in the longitudinal direction by 1.38 times, the acrylic adhesive layer was peeled off together, and C1 to C8 were produced as the above-mentioned "production of optical compensation films C1 to C8". The optical compensation film shown in the following Table 5 was produced. A sample of the second optical compensation film 5 of the form. -95- 201106060 〔s谳〕 Film thickness (μιη) S § § Magnification TD (magnification) 1.18 1.17 1.20 1.15 1.24 1.19 1.20 1 1.18 i magnification MD (magnification) 〇〇1-^ 1.17 1.20 1.15 1.14 1.19 1.20 00 τ- Η 1-H Adding dose (parts by mass) 00 mmmmm Additive type DSP 値 rising agent 1 DSP 値 rising agent 2 DSP 値 rising agent 2 DSP 値 rising agent 2 DSP 値 rising agent 2 DSP 値 rising agent 2 Additive 2 DSP 値 rising agent 2 Adding dose (parts by mass) 〇1 1 1 1 1 〇1 Additive additive 1 1 1 1 1 1 Additive 1 1 Resin 1_ CQ QQQQQ 0Q Q Film C1 Film C2 Film C3 Film C4 Film C5 Film C6 Film C7 Film C8枳魃«: α一※ 叵枳鹋1«: aw※ -96- 201106060 Specifically, in addition to changing the cellulose ester species, additive species, additive amount, and film thickness, the width of the tenter is extended and then transported. The optical compensation films C 1 to C 8 were produced in the same manner as in the production of the base film A 1 except that the tension was also extended in the longitudinal direction. The additive materials in Table 5 are shown in Table 3. The DSP 値 rising agent 1 indicates the aromatic terminal polyester compound 18, and the DSP 値 rising agent indicates the triazine compound. <<Evaluation of Optical Compensation Film>> &lt;Measurement of Delay 値Ro, Rth&gt; Measurement of optical compensation films Z 1 to Z9, C 1 using an automatic birefringence meter (manufactured by Oji Scientific Instruments Co., Ltd., KOBRA-21 ADH) ~C 8 delay 値. Specifically, the optical compensation film is measured at a temperature of 23 ° C and 5 5% RH at a wavelength of 590 nm, and the refractive index of the three-dimensional element is measured, and the average enthalpy of the refractive indices nx, ny, and nz is calculated. The following equation calculates the retardation 値Ro in the in-plane direction and the retardation 値Rth in the thickness direction. The results are shown in Table 6 below.

Ro= ( nx-ny) χ d

Rth={ ( nx + ny) /2-nz} xd where Ro is the in-plane retardation 値 of the film, Rth is the retardation of the film thickness direction, and nx is the refractive index of the retardation axis in the plane of the film. Ny represents the refractive index in the direction of the phase in the plane of the film, nz represents the refractive index in the thickness direction of the film, and d represents the thickness (nm) of the film. -97- 201106060 i Comparative Example I 15 I s SI 120; I ! 0.96 | 1 C12 | eg oo 1 105 IX 0 &lt; ο 'Τ&quot;· Comparative Example I Ζ17 I Ο «SJ o I r-01 I | cia | c〇〇T·.. | 300 | I 105 1 ◎ XX Φ Comparative example rwi β 1 270 1 〇丨1.0.1 1 I.. o I 300 | I 0.93 | ◎ XX CO 1 The invention 1 1 Z- 18 1 s un o CM a&gt; I G12 | 3 o 1 ι-os I ® ◎ The present invention &lt;〇. s 〇CM b S 〇&gt; 〇| C1.6 I 8 r~ | 300 | 丨1_ 〇5.- 1 ◎ oo &lt;b 1 The present invention 1 1 Z12 I s U&gt; o. TJ·- 1 0.96 | ll to 〇S 〇CO 1 105 1 &lt; ◎ &lt; ιο 1 The present invention 1 I Ζί9 I Cr&gt; N in o to | 0.96 | i 012 I δ os CSJ 1 1-05 I &lt; ◎ ◎ 1 invention 1 I Z14_ IMS s 1 I G14 | pog I 105 1 &lt;1 ό ◎ CO 丨 丨I Z13," IO o CJ4 1 0.96 | 1 .'C13_l ¢0 〇CM \ 360 | m 〇· &lt;i ◎ ◎ CsJ 1 invention 1 l. Z12__J JO '〇丁| 0.96 | 1 Cl 2 1 CNI oo 1 250 | mp ◎ ◎ ◎ τ» 1 invention 1 zir: 1 N IO .〇| 0.85 | 11 »7- o § .C&gt;J 1 1-01 1 ◎ ◎ ◎ 0 2 Remark 1 哔,^oim Ro 1 Rth1 DSP(Rol) 1 polarizer No 1 I thin 腠 No 1 1 R02_ I Rtb2 DSR (Rth2) Viewing angle CR Optic color shifting liquid crystal display device 1st optical compensation layer J plate I m Optical compensation layer evaluation -98 - 201106060 It is known from the delays 値Rol and Rth1 of the first optical compensation layer of Table 6 that the optical compensation films Z1 to Z4, Z6, Z8, and Z9 of the present invention satisfy Ro&gt;0 and -R 〇/2&lt;Rth&lt;Ro/2, thus satisfying nxl&gt;nzl&gt;nyl (:formula (1)) ° The optical compensation film of the present invention is known from the 値R〇2, Rth2 of the second optical compensation layer Since C1 to C6 are Ro2 and Rth&gt;Ro/2, they satisfy nx2$ny2&gt;nz2 (: (2)) ° Further, the optical compensation layer used in the liquid crystal display devices 1 to 8 of the present invention is wavelength-dispersive. To satisfy DSP ( Rol ) &lt;1 &lt; DSP ( Rth2 ) (: (3)). <<Preparation of Polarizing Plate>> A polyvinyl alcohol film having a thickness of 120 μm was subjected to one-axis stretching (temperature 1 1 (TC, stretching ratio 5 times). This was immersed in an aqueous solution composed of 75 g of iodine, 75 g of potassium iodide, and 100 g of water. After 50 seconds, it was immersed in an aqueous solution of 68 g of potassium iodide, 7.5 g of boric acid, and water 〇〇g. Then, it was washed with water and dried to obtain a polarizer. Next, according to the following steps 1 to 5, The optical compensation films Z1 to 9 or the optical compensation films C1 to 8 are bonded to the surface side of the polarizer, and the inner surface side is attached to the inner surface side. ο n nica M i η ο 11 a T ac KC 4 UY ( Κ ο nica M i η ο 11 a Ο pt 〇 (cell) cellulose ester film) adhered to the polarizing plate protective film, and made polarizing plates zil~19, Cl 1~18. However, the optical compensation film Zl~4, 8, 9 base film side became The state of the polarizer side (the liquid crystal layer side is the opposite side of the polarizer) is attached to the polarizer. -99- 201106060 Step 1: The film (optical compensation film, cellulose ester film) is immersed at 2 mol/L at 60 °C. Aqueous sodium hydroxide solution for 90 seconds, followed by washing with water, drying, and getting attached to the polarizer The saponified film is combined with the side. Step 2: The above-mentioned polarizer is immersed in a polyvinyl alcohol adhesive bath having a solid content of 2% by mass for 1 to 2 seconds. Step 3: Wipe off the excess of the polarizer attached in step 2. After the adhesive, the optical compensation film and the cellulose ester film which have been treated in the step 1 are laminated. Step 4: The bonding step is carried out at a pressure of 20 to 30 N/cm 2 and a conveying speed of about 2 m/min. Laminated laminate. Step 5: The sample adhered in step 4 is dried in a dryer at 80 ° C for 2 minutes, and then polarized plates Z11 to 19 and C11 to 18 are produced. "Production of Liquid Crystal Display Device" A commercially available 32-type MVA type liquid crystal television ("AQUOS 32AD5" manufactured by SHARP. However, the "AQUOS" registered trademark) is peeled off on both sides of the polarizing plate, and the polarizing plates Z11 to 19 and C 11 to 18 which are produced as described above are formed as a table. The combination of 6 is applied to both sides to produce a liquid crystal display device (1) to (Π). At this time, the orientation of the polarizing plate is bonded to the optical compensation film side (the side opposite to Konica MinoltaTac KC4UY) to become a liquid crystal cell side. And the absorption axis faces the polarized light that is pre-fitted with the purchase The same direction of the board was used. The following evaluation was carried out using the liquid crystal display device (丨)~〗 〖) prepared as described above. -100-201106060 "Evaluation of Liquid Crystal Display Device" &lt;Evaluation of Viewing Angle&gt; (In the environment of 5:5% RH, the backlight of each liquid crystal display device was continuously lit for one week, and the viewing angle was measured. The measurement was performed using EZ-Contrastl60D manufactured by ELDIM Co., Ltd., and the azimuth angles of 45, 135, 225, and 315 were measured. °, chamfer 70. The ratio between the black display and the white display brightness ratio A 'is average 値. The measurement results are evaluated according to the following criteria, and the results are shown in Table 6. In this evaluation criterion, "△" indicates practical use. For those who are within the allowable range, "XJ is a practical or acceptable range. ® : 100 &lt; A Δ: 50 &lt; Α ^ 1 00 x: A^50 &lt; frontal contrast &gt; 55% RH environment at 23 ° C Then, after the backlight of each liquid crystal display device was turned on, the luminance in the normal direction of the display screen of the white display and the black display was measured, and the ratio was evaluated as a frontal comparison based on the following criteria. The results are shown in Table 6 above. In the measurement system, CS-2000 manufactured by Konica Minolta Sensing Co., Ltd. was used. When the front side comparison exceeded 1 000, it was evaluated as an excellent liquid crystal display device. In the evaluation standard, "△" indicates a practical and acceptable range, "XJ series. Expressing practicality, For the outside range. Front contrast = (luminance of white display measured by the normal direction of the display device) / (luminance of black display measured by the normal direction of the display device) -101 - 201106060 ◎ : 1000 &lt; Contrast 〇: 750 &lt; front contrast $1000 △ : 5 00 < front contrast $ 750 X: front contrast S500 &lt; evaluation of color shift in oblique direction &gt; For each liquid crystal display device, it is visually confirmed by the number of people in the oblique direction in the dark direction The black display state of the room was evaluated by the following criteria. The results are shown in Table 6. In the evaluation criteria, "△" indicates a practical or acceptable range, and "Γχ" indicates a practical or acceptable range. ◎ : 0 out of 10 people think that there is coloring. 〇: 1 to 2 people in 1 0 people think that there is coloring. △: 3 to 5 people out of 10 people think that there is coloring. x: 10 to 10 in 10 people It is considered that there is coloring. <Comprehensive evaluation> From the above results, it is understood that the liquid crystal display devices (1) to (8) of the embodiment of the present invention are different from the liquid crystal display devices (9) to (1 1) of the comparative example. Can achieve simultaneous expansion of perspective, positive contrast improvement, prevention The color shift in the oblique direction is excellent, and the liquid crystal display device is excellent. When reviewing the above characteristics, first, the rod-like liquid crystal in the liquid crystal cell of the VA mode has a negative Rth and a wavelength dispersion of positive, in order to cancel the liquid crystal. The light leakage of the cell (due to the light leakage caused by the phase difference of the liquid crystal cell in the thickness direction) 'has to have a positive Rth, and has the same optical compensation layer of the C plate of the -102-201106060 wavelength dispersion as the liquid crystal cell. In addition, in order to compensate for light leakage of the polarizer (light leakage due to non-orthogonality when the transmission axes of the two polarizers are viewed from the oblique direction), it is preferable to obtain the same compensation effect at each wavelength, and the wavelength becomes larger. The optical compensation layer of the two plates in which the phase difference is also increased and the reverse wavelength is dispersed is suitable. Therefore, according to the configuration of the present invention in which the optical compensation layer of the C plate having the positive wavelength dispersion and the optical compensation layer of the Z plate which is dispersed in the reverse wavelength are combined, it is most suitable for the light leakage compensation caused by the liquid crystal cell and the polarizing plate. At the same time, it also takes into account the oblique color shift, viewing angle and front contrast. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a schematic configuration of a liquid crystal display device of the present invention. Fig. 2 is a schematic view showing a schematic configuration of a modification of the liquid crystal display device of the present invention. [Description of main component symbols] 1, 1 A, 1 D, 1 E : Liquid crystal display device 2 : First polarizer 3, 3 D : First optical compensation layer 4 · Liquid crystal cell 5 : Second optical compensation layer 6 : 2 polarizer 3 0 : biaxial film (cellulosic resin layer) 3 1 : liquid crystal layer • 103-

Claims (1)

201106060 VII. Patent application scope: 1. A liquid crystal display device characterized in that it has at least a first polarizer, a first optical compensation layer, a liquid crystal cell, a second optical compensation layer and a second polarizer, and the first and The second optical compensation layer satisfies the following formulas (1) to (3) &gt; The liquid crystal molecules in the liquid crystal cell are aligned in the thickness direction of the liquid crystal cell when black is displayed, nxl &gt;nzl&gt;nyl (1) nx2 ^ny2&gt;nz2 (2) DSP (Rol) &lt;1&lt;DSP(Rth2) (3) (However, nxl indicates the refractive index in the direction of the slow axis in the plane of the first optical compensation layer, and nyl indicates the foregoing a refractive index in the direction of the phase in the axial direction of the optical compensation layer, nz 1 is a refractive index in the thickness direction of the first optical compensation layer, and nx2 indicates a direction of the slow phase in the plane of the second optical compensation layer. The refractive index 'ny2' indicates the refractive index in the in-plane direction of the second optical compensation layer, and nz2 indicates the refractive index in the thickness direction of the second optical compensation layer. Rol means the following formula (8-1) ) indicates the in-plane retardation of the first optical compensation layer, Rth2 The retardation 厚度 in the thickness direction of the second optical compensation layer represented by the following formula (9-2), and the DSP (Rol) is the wavelength dispersion 面 of the in-plane retardation 値ro1 of the first optical compensation layer, at a wavelength of 480 nm. The in-plane retardation 値R〇1 of the ith optical compensation layer measured is divided by the in-plane retardation 値Ro丨 measured at a wavelength of 6 3 Onm, and the DSP (Rth2) is the thickness direction of the second optical compensation layer. Delay 値-104- 201106060 Rth2 wavelength dispersion 値, the retardation 値Rth2 of the second optical compensation layer measured at a wavelength of 480 nm divided by the delay 値Rth2 measured at a wavelength of 63 Onm, R〇1 = (nx1-ny 1 ) xd 1 (8-1) Rth2= { ( nx2 + ny2 ) /2-nz2}xd2) (9-2) However, dl represents the thickness (nm) of the aforementioned first optical compensation layer, d2 The thickness (ηηι) of the second optical compensation layer, R〇l and Rth2 are measured at a wavelength of 5 90 nm, respectively. 2. The liquid crystal display device of claim 1, wherein the first optical compensation layer contains a cellulose resin layer. The liquid crystal display device according to claim 1 or 2, wherein the first optical compensation layer satisfies the following formulas (4) and (5), and the second optical compensation layer satisfies the following formula (6) , (7), R ο 1 = 5 0 〜1 0 0 [ nm ] ( 4 ) |Rthl | = 0~20[nm] ( 5 ) R〇2 = 0~20[nm] ( 6 ) Rth2 = 200 to 3 50 [nm] (7) (But Rthl represents a retardation 厚度' R〇2 in the thickness direction of the ith optical compensation layer represented by the following formula (9-1), which represents the following formula (8-2). The in-plane retardation 値 of the second optical compensation layer, R 〇 2 and Rthl are respectively measured at a wavelength of 590 nm, and Ro2 = ( nx 2 - ny 2 ) x d 2 ( 8 - 2 ) Rthl = { ( Nxl+nyl)/2-nzl}xdl) (9_i)). 4. The liquid crystal display device of any one of the first to third aspects of the invention, wherein the first optical compensation layer contains at least a cellulose resin layer and a liquid crystal layer, and the cellulose resin layer is The liquid crystal layer is disposed closer to the first polarizer side than the liquid crystal layer, and has an in-plane phase difference, and the slow axis is orthogonal to the absorption axis of the first polarizer. The liquid crystal display device according to any one of claims 1 to 3, wherein the first optical compensation layer contains at least a cellulose resin layer and a liquid crystal layer, and the cellulose resin layer is compared with the aforementioned The liquid crystal layer is disposed close to the liquid crystal cell side and has an in-plane phase difference, and the slow axis is parallel to the absorption axis of the first polarizer. The liquid crystal display device according to any one of claims 1 to 5, wherein the second optical compensation layer is composed of a cellulose resin layer containing a DSP 値 rising agent. -106-