JP2009015192A - Substrate for liquid crystal display device, and liquid crystal display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a substrate for a liquid crystal display device in which light leakage scarcely occurs. <P>SOLUTION: In the substrate for the liquid crystal display device, which has an optically anisotropic layer having a slow axis in an in-plane direction on a color filter substrate having projecting and recessing level differences, when a maximum value of displacement of the slow axis in an arbitrary region of the optically anisotropic layer with 10 μm diameter is made to be 10° or less, an area observed with a typical polarizing microscope is usually the region with 10 μm diameter, a state is materialized in which no light leakage is observed in the observed area when the slow axis is aligned with the extinction direction, and furthermore no light leakage is observed when the slow axis is rotated by 10° from the extinction direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a liquid crystal display device substrate and a liquid crystal display device using the substrate, and more particularly to a liquid crystal display device substrate in which light leakage does not occur and a liquid crystal display device using the liquid crystal display device substrate.

  CRT (Cathode Ray Tube) has been mainly used as a display device used for OA devices such as word processors, notebook personal computers, personal computer monitors, portable terminals, and televisions. In recent years, liquid crystal display devices have been widely used instead of CRTs because of their thinness, light weight, and low power consumption. A liquid crystal display (LCD) has a liquid crystal cell and a polarizing plate. The polarizing plate is composed of a protective film and a polarizing film, and is obtained by dyeing a polarizing film made of a polyvinyl alcohol film with iodine, stretching, and laminating both surfaces with a protective film. For example, in a transmissive liquid crystal display device, the polarizing plate is attached to both sides of the liquid crystal cell, and one or more optical compensation sheets may be disposed. On the other hand, in a reflective liquid crystal display device, a reflector, a liquid crystal cell, one or more optical compensation sheets, and a polarizing plate are arranged in this order. The liquid crystal cell includes a liquid crystal molecule, two substrates for enclosing the liquid crystal molecule, and an electrode layer for applying a voltage to the liquid crystal molecule. The liquid crystal cell performs ON / OFF display depending on the alignment state of liquid crystal molecules, and can be applied to any of a transmission type, a reflection type, and a semi-transmission type, and includes TN (twisted nematic), VA (vertically aligned), IPS ( In-Plane Switching), FFS (Fringe Field Switching), OCB (Optically Compensatory Bend), ECB (Electrically Controlled Birefringence), STN (SuperTrain). However, the color and contrast that can be displayed by a conventional liquid crystal display device vary depending on the angle at which the LCD is viewed. For this reason, the viewing angle characteristics of liquid crystal display devices have not yet exceeded the performance of CRT.

  In order to improve this viewing angle characteristic, an optical compensation film for viewing angle compensation has been applied. Until now, LCDs having excellent contrast viewing angle characteristics have been proposed by using optical compensation films having various optical characteristics for the various display modes described above. In particular, the three modes of OCB, VA, and IPS have wide viewing angle characteristics in all directions as wide viewing angle modes. In recent years, large-sized displays exceeding 30 inches have already spread to homes for television applications. I'm starting.

  However, although the method using the optical compensation film can effectively improve the contrast viewing angle characteristics, the improvement effect on the color viewing angle characteristics is not sufficient, and the improvement of the color viewing angle characteristics is an important issue for LCDs. The color viewing angle characteristic of the LCD is derived from the fact that the wavelength changes in three typical colors of R, G, and B, so that the change due to the phase difference of the polarization is different even with the same phase difference. In order to optimize this, the wavelength dependence of the birefringence of the optically anisotropic material, that is, the birefringence wavelength dispersion is optimized with respect to R, G, and B. In the current LCD, since the birefringence wavelength dispersion of liquid crystal molecules used for ON / OFF display and the birefringence wavelength dispersion of the optical compensation film cannot be easily controlled, the color viewing angle characteristics have not been improved sufficiently.

  In order to improve the color viewing angle characteristics, a method of performing optical compensation independently for three colors of R, G, and B mainly by using a method of patterning together with a color filter in a liquid crystal cell. (See Patent Document 1) has been proposed. By applying these to a λ / 4 plate in a reflective liquid crystal display device or an LCD of each mode, the color viewing angle characteristics can be improved. However, an optically anisotropic layer which is a material that can be patterned in a liquid crystal cell and has an optically uniform retardation characteristic while aligning on a color filter patterned with respect to R, G, and B It is very difficult to form.

  Currently, as a method of patterning an optical compensation layer for each of R, G, and B color filters, a method of forming a patterned optical compensation layer by photolithography three times for each RGB (see Patent Document 2) There has been proposed a system (see Patent Document 3) in which an optical compensation layer is formed by coating all over color filters having different film thicknesses. However, when an optically anisotropic layer is formed in a liquid crystal cell, particularly when patterning is performed, a mechanism for spontaneously orienting the liquid crystal molecules is required to form the optically anisotropic layer. Therefore, when an optically anisotropic layer is formed on a stepped substrate such as a color filter, liquid crystal molecules cause alignment failure at the stepped portion, causing light leakage, thereby causing a decrease in contrast. Is being viewed.

JP 2004-37837 A JP 2004-240102 A JP 2005-24919 A

  An object of the present invention is to provide a substrate for a liquid crystal display device in which an optically anisotropic layer is formed on a color filter substrate having an uneven step, and the liquid crystal display device substrate is less prone to light leakage. .

The above problems have been solved by the following (1) to (5).
(1) A substrate for a liquid crystal display device having an optically anisotropic layer having a slow axis in the in-plane direction on a color filter substrate having an uneven step, wherein the optically anisotropic layer has an arbitrary diameter of 10 μm. A substrate for a liquid crystal display device, wherein a maximum value of the slow axis deviation is 10 ° or less.
(2) A liquid crystal display device comprising a pair of polarizing plates and a liquid crystal cell comprising the liquid crystal display device substrate according to (1) between the pair of polarizing plates.
(3) The liquid crystal display device according to (2), wherein the alignment mode of the liquid crystal layer is a TN mode, a VA mode, an IPS mode, an FFS mode, or an OCB mode.

(4) A method for producing a substrate for a liquid crystal display device according to (1) above, comprising the following [1] and [2]:
[1] An optically anisotropic layer having a slow axis in the in-plane direction obtained by applying and drying a solution containing a liquid crystalline compound to form a liquid crystal phase and then irradiating the liquid crystal phase with heat or ionizing radiation; Providing a transfer material having a transfer adhesive layer;
[2] Laminating the transfer material on a color filter substrate having uneven steps, and forming the transfer adhesive layer and the optically anisotropic layer in this order on the color filter substrate.

(5) A method for producing a substrate for a liquid crystal display device according to (1) above, comprising the following [11] to [13] in this order:
[11] Providing an alignment layer on a color filter substrate having uneven steps;
[12] Forming a liquid crystal phase by applying and drying a solution containing a liquid crystal compound on the alignment layer;
[13] Forming an optically anisotropic layer having a slow axis in the in-plane direction by irradiating the liquid crystal phase with polarized ultraviolet rays.

  According to the present invention, there is provided a liquid crystal display device substrate in which an optically anisotropic layer is formed on a color filter substrate having uneven steps, and the light leakage hardly occurs. A high-contrast liquid crystal display device can be provided using the liquid crystal display device substrate.

Hereinafter, the present invention will be described in detail.
In the present specification, “to” is used to mean that the numerical values described before and after it are included as a lower limit value and an upper limit value.

[substrate]
The substrate used for manufacturing the substrate for the liquid crystal display device is not particularly limited as long as it is transparent, and a known glass plate such as a soda glass plate having a silicon oxide film on its surface, a low expansion glass, a non-alkali glass, or a quartz glass plate. However, a transparent substrate made of a polymer may be used. In the case of a liquid crystal display device, it is preferable to have heat resistance because a high temperature process of 180 ° C. or higher is required in order to bake the color filter and the alignment film in the liquid crystal display device substrate manufacturing process. As such a heat-resistant substrate, a glass plate or polyimide, polyethersulfone, heat-resistant polycarbonate, or polyethylene naphthalate is preferable, and a glass plate is particularly preferable from the viewpoint of price, transparency, and heat resistance. In addition, the substrate can be made to adhere well to the transfer adhesive layer by performing a coupling treatment in advance. As the coupling treatment, a method described in JP 2000-39033 A is preferably used. Although not particularly limited, the film thickness of the substrate is generally preferably 100 to 1200 μm, particularly preferably 300 to 1000 μm.

[Color filter substrate]
The color filter substrate is a substrate in which a black matrix and color filters of at least three colors of RGB are formed on the substrate. Unless otherwise specified in this specification, the “color filter substrate” and the “substrate” are usually classified. Used separately. Color filter substrates are generally prepared by the method described in Keisuke Kobayashi, Color Liquid Crystal Display, page 240, Sangyo Tosho (1994), FUJIFILM RESEARCH & DEVELOPMENT No. 44 (1999), page 25, and can be produced by using the Transer system (manufactured by Fuji Photo Film Co., Ltd.).
In the substrate for a liquid crystal display device of the present invention, the color filter substrate has an uneven step, and an optically anisotropic layer having a slow axis in the in-plane direction on the color filter substrate regardless of the uneven step. The maximum value of the shift of the slow axis in an arbitrary 10 μm diameter region is 10 ° or less.
The height of the uneven step may be, for example, 100 nm or more, preferably 300 nm or more, more preferably 1 μm or more.

[Liquid crystal display substrate]
Unless otherwise specified in this specification, “a substrate for a liquid crystal display device” and “a substrate” are usually distinguished from each other. The substrate for a liquid crystal display device of the present invention is preferably used as a part of the liquid crystal display device, but the application is not particularly limited. In this aspect, the optically anisotropic layer contributes to optical compensation of the cell of the liquid crystal display device, that is, contributes to widening the contrast viewing angle and eliminating image coloring of the liquid crystal display device. Examples of the method for producing the substrate for a liquid crystal display device of the present invention include a method of transferring an optically anisotropic layer formed on a support to the substrate, a method of photoaligning the optically anisotropic layer on the substrate by irradiation with polarized light, and the like. Can be mentioned.

[Optically anisotropic layer]
The optically anisotropic layer has a slow axis in the in-plane direction, and has an optical characteristic in which the retardation is not substantially zero when the phase difference is measured, that is, the optical direction is not isotropic. If it does, there is no limitation in particular. The optically anisotropic layer is not particularly limited as long as it has optical anisotropy. However, a composition containing a liquid crystalline compound (for example, a coating solution) is applied to the surface of the alignment layer to obtain a desired liquid crystal phase. It is preferable that the layer is formed by fixing the alignment state by irradiation with heat or ionizing radiation after the alignment state is shown.

  The optically anisotropic layer in the substrate for a liquid crystal display device of the present invention has a maximum value of the deviation of the slow axis in an arbitrary 10 μm diameter region of 10 ° or less. When an arbitrary portion of the optically anisotropic layer is observed using a general polarizing microscope, the observed portion is usually a region having a diameter of 10 μm. The slow axis of this observed portion is adjusted to the quenching position. In the case where no light leakage is observed, and no light leakage is observed even when rotated by 10 ° from the extinction position, the maximum value of the slow axis deviation in an arbitrary 10 μm diameter region of the optically anisotropic layer is 10 It can be said that it is below.

[Light leakage caused by uneven steps]
When an optically anisotropic layer is formed from a composition containing a liquid crystal compound in a liquid crystal cell, particularly when patterning, a mechanism for spontaneously aligning liquid crystal molecules is necessary. In the case of using a substrate having, liquid crystal molecules cause alignment failure at the stepped portion, light leakage from the optically anisotropic layer occurs, and contrast is lowered. The schematic cross-sectional view shown in FIG. 1 shows an example in which a poorly aligned region 13 of the liquid crystal molecules 12 is generated in the vicinity of the uneven step 11 on the substrate having the uneven step 11.

  FIG. 2 shows an example of the color filter substrate. The color filter 32 is produced after the black matrix 33 is formed on the substrate 31, and the color filter substrate of FIG. The smaller one is the color filter substrate of FIG. 2C is a color filter substrate of FIG. 2C in which the black matrix 33 is formed after the color filter 32 is formed on the substrate 31. In general, the film thickness of the black matrix and the color filter is several microns, and in any case, there are uneven steps on the order of submicrons.

[Optically Anisotropic Layer Consisting of Composition Containing Liquid Crystalline Compound]
As described above, the optically anisotropic layer functions as an optically anisotropic layer that compensates the viewing angle of the liquid crystal display device by being incorporated in the liquid crystal cell. Optically required for optical compensation in combination with other layers (for example, an optically anisotropic layer disposed outside the liquid crystal cell) as well as an aspect in which the optically anisotropic layer alone has sufficient optical compensation capability Embodiments satisfying the characteristics are also included in the scope of the present invention. In addition, the optically anisotropic layer of the transfer material does not need to satisfy the optical characteristics sufficient for the optical compensation capability. For example, the optical characteristics are obtained through an exposure process performed in the process of being transferred onto the substrate. It may be expressed or changed to finally exhibit optical characteristics necessary for optical compensation.

  In general, liquid crystal compounds can be classified into a rod-shaped type and a disk-shaped type based on their shapes. In addition, there are low and high molecular types, respectively. Polymer generally refers to a polymer having a degree of polymerization of 100 or more (Polymer Physics / Phase Transition Dynamics, Masao Doi, 2 pages, Iwanami Shoten, 1992). In the present invention, any liquid crystal compound can be used, but a rod-like liquid crystal compound or a disk-like liquid crystal compound is preferably used. Two or more kinds of rod-like liquid crystalline compounds, two or more kinds of disc-like liquid crystalline compounds, or a mixture of a rod-like liquid crystalline compound and a disk-like liquid crystalline compound may be used. It is more preferable to use a rod-like liquid crystal compound or a disk-like liquid crystal compound having a reactive group because temperature change and humidity change can be reduced, and at least one of the reactive groups in one liquid crystal molecule is 2 or more. More preferably it is. The liquid crystalline compound may be a mixture of two or more, and in that case, at least one preferably has two or more reactive groups. The thickness of the optically anisotropic layer is preferably 0.1 to 20 μm, and more preferably 0.5 to 10 μm.

  Examples of rod-like liquid crystalline compounds include azomethines, azoxys, cyanobiphenyls, cyanophenyl esters, benzoic acid esters, cyclohexanecarboxylic acid phenyl esters, cyanophenylcyclohexanes, cyano-substituted phenylpyrimidines, alkoxy-substituted phenylpyrimidines. , Phenyldioxanes, tolanes and alkenylcyclohexylbenzonitriles are preferably used. Not only the above low-molecular liquid crystalline compounds but also high-molecular liquid crystalline compounds can be used. The polymer liquid crystalline compound is a polymer compound obtained by polymerizing a rod-like liquid crystalline compound having a low molecular reactive group. The rod-like liquid crystal compound having a low-molecular reactive group that is particularly preferably used is a rod-like liquid crystal compound represented by the following general formula (I).

Formula (I): Q ¹ -L ¹ -A ¹ -L ³ -ML ⁴ -A ² -L ² -Q ²
In the formula, Q ¹ and Q ² are each independently a reactive group, and L ¹ , L ² , L ³ and L ⁴ each independently represent a single bond or a divalent linking group. A ¹ and A ² each independently represent a spacer group having 2 to 20 carbon atoms. M represents a mesogenic group.

Hereinafter, the rod-like liquid crystal compound having a reactive group represented by the general formula (I) will be described in more detail. In the formula, Q ¹ and Q ² are each independently a reactive group. The polymerization reaction of the reactive group is preferably addition polymerization (including ring-opening polymerization) or condensation polymerization. In other words, the reactive group is preferably a reactive group capable of addition polymerization reaction or condensation polymerization reaction. Examples of reactive groups are shown below.

Examples of the divalent linking group represented by L ¹ , L ² , L ³ and L ⁴ include —O—, —S—, —CO—, —NR ² —, —CO—O—, and —O—CO. —O—, —CO—NR ² —, —NR ² —CO—, —O—CO—, —O—CO—NR ² —, —NR ² —CO—O—, and NR ² —CO—NR ^2. A divalent linking group selected from the group consisting of-is preferred. R ² is an alkyl group having 1 to 7 carbon atoms or a hydrogen atom. In the formula (I), Q ¹ -L ¹ and Q ² -L ² -are CH ₂ ═CH—CO—O—, CH ₂ ═C (CH ₃ ) —CO—O—, and CH ₂ ═C ( Cl) -CO-O-CO- O- are _{preferable, CH 2 = CH-CO-} O- is most preferable.

A ¹ and A ² represent spacer groups having 2 to 20 carbon atoms. An alkylene group having 2 to 12 carbon atoms, an alkenylene group, and an alkynylene group are preferable, and an alkylene group is particularly preferable. The spacer group is preferably a chain and may contain oxygen atoms or sulfur atoms that are not adjacent to each other. The spacer group may have a substituent and may be substituted with a halogen atom (fluorine, chlorine, bromine), a cyano group, a methyl group, or an ethyl group.

Examples of the mesogenic group represented by M include all known mesogenic groups. In particular, a group represented by the following general formula (II) is preferable.
Formula (II): - (- W 1 -L 5) n -W 2 -
In the formula, W ¹ and W ² each independently represent a divalent cyclic alkylene group or a cyclic alkenylene group, a divalent aryl group or a divalent heterocyclic group, and L ⁵ represents a single bond or a linking group. Specific examples of the linking group include specific examples of groups represented by L ^{1 to} L ⁴ in the formula (I), —CH ₂ —O—, and —O—CH ₂ —. n represents 1, 2 or 3.

W ¹ and W ² include 1,4-cyclohexanediyl, 1,4-phenylene, pyrimidine-2,5-diyl, pyridine-2,5diyl, 1,3,4-thiadiazole-2,5-diyl, 1,3,4-oxadiazole-2,5-diyl, naphthalene-2,6-diyl, naphthalene-1,5-diyl, thiophene-2,5-diyl, pyridazine-3,6-diyl . In the case of 1,4-cyclohexanediyl, there are trans isomers and cis isomers, but either isomer may be used, and a mixture in any proportion may be used. More preferably, it is a trans form. W ¹ and W ² may each have a substituent. Examples of the substituent include a halogen atom (fluorine, chlorine, bromine, iodine), a cyano group, an alkyl group having 1 to 10 carbon atoms (methyl group, ethyl group, propyl group, etc.), and an alkoxy group having 1 to 10 carbon atoms. (Methoxy group, ethoxy group, etc.), C1-10 acyl group (formyl group, acetyl group, etc.), C1-10 alkoxycarbonyl group (methoxycarbonyl group, ethoxycarbonyl group, etc.), carbon atom Examples thereof include an acyloxy group of 1 to 10 (acetyloxy group, propionyloxy group, etc.), nitro group, trifluoromethyl group, difluoromethyl group and the like.

  Preferred examples of the basic skeleton of the mesogenic group represented by the general formula (II) are shown below. These may be substituted with the above substituents.

  Examples of the compound represented by the general formula (I) are shown below, but the present invention is not limited thereto. The compound represented by the general formula (I) can be synthesized by the method described in JP-T-11-513019.

  As another aspect of the present invention, there is an aspect in which a discotic liquid crystal is used for the optically anisotropic layer. The optically anisotropic layer is preferably a layer of a low molecular weight liquid crystal discotic compound such as a monomer or a polymer layer obtained by polymerization (curing) of a polymerizable liquid crystal discotic compound. Examples of the discotic (discotic) compound include C.I. Destrade et al., Mol. Cryst. 71, 111 (1981), benzene derivatives described in C.I. Destrade et al., Mol. Cryst. 122, 141 (1985), Physicslett, A, 78, 82 (1990); Kohne et al., Angew. Chem. 96, page 70 (1984) and the cyclohexane derivatives described in J. Am. M.M. Lehn et al. Chem. Commun. , 1794 (1985), J. Am. Zhang et al., J. Am. Chem. Soc. 116, page 2655 (1994), and azacrown-based and phenylacetylene-based macrocycles. The above discotic (discotic) compounds generally have a discotic nucleus at the center of the molecule, and groups (L) such as linear alkyl groups, alkoxy groups, and substituted benzoyloxy groups are substituted in a radial pattern. In other words, it has liquid crystallinity and generally includes a so-called discotic liquid crystal. However, when such an aggregate of molecules is uniformly oriented, it exhibits negative uniaxiality, but is not limited to this description. Further, in the present invention, it is not necessary that the final product is formed from a discotic compound, for example, the low molecular discotic liquid crystal has a group that reacts with heat, light, or the like. As a result, it may be polymerized or cross-linked by reaction with heat, light or the like, resulting in high molecular weight and loss of liquid crystallinity.

In the present invention, it is preferable to use a discotic liquid crystalline compound represented by the following general formula (III).
Formula (III): D (-LP) _n
In the formula, D is a discotic core, L is a divalent linking group, P is a polymerizable group, and n is an integer of 4 to 12.

  In the formula (III), preferred specific examples of the discotic core (D), the divalent linking group (L) and the polymerizable group (P) are (D1) described in JP-A No. 2001-4837, respectively. To (D15), (L1) to (L25), (P1) to (P18), and the discotic core (D), divalent linking group (L) and polymerizable group ( The contents regarding P) can be preferably applied here.

  Preferred examples of the discotic compound are shown below.

  When a discotic liquid crystalline compound having a reactive group is used as the liquid crystalline compound, it may be fixed in any alignment state of horizontal alignment, vertical alignment, tilt alignment, and twist alignment. Horizontal alignment means that the disk surface of the core of the discotic liquid crystalline compound is parallel to the horizontal plane of the support, but is not strictly required to be parallel. In this specification, the horizontal plane is defined as the horizontal plane. It shall mean an orientation with an inclination angle of less than 10 degrees.

  In the case of laminating two or more optically anisotropic layers made of a liquid crystalline compound, the combination of liquid crystalline compounds is not particularly limited. It may be a laminate of layers, a layer made of a discotic liquid crystalline compound, and a layer made of a rod-like liquid crystalline compound. The combination of the alignment states of the layers is not particularly limited, and optically anisotropic layers having the same alignment state may be stacked, or optically anisotropic layers having different alignment states may be stacked.

  The optically anisotropic layer is preferably formed by applying a coating liquid containing a liquid crystalline compound and the following polymerization initiator and other additives onto a predetermined alignment layer described later. As the solvent used for preparing the coating solution, an organic solvent is preferably used. Examples of organic solvents include amides (eg, N, N-dimethylformamide), sulfoxides (eg, dimethyl sulfoxide), heterocyclic compounds (eg, pyridine), hydrocarbons (eg, benzene, hexane), alkyl halides (eg, , Chloroform, dichloromethane), esters (eg, methyl acetate, butyl acetate), ketones (eg, acetone, methyl ethyl ketone), ethers (eg, tetrahydrofuran, 1,2-dimethoxyethane). Alkyl halides and ketones are preferred. Two or more organic solvents may be used in combination.

[Fixation of alignment state of liquid crystalline compounds]
The aligned liquid crystalline compound is preferably fixed while maintaining the alignment state. The immobilization is preferably carried out by a polymerization reaction of a reactive group introduced into the liquid crystal compound. The polymerization reaction includes a thermal polymerization reaction using a thermal polymerization initiator and a photopolymerization reaction using a photopolymerization initiator, and a photopolymerization reaction is more preferable. The photopolymerization reaction may be either radical polymerization or cationic polymerization. Examples of radical photopolymerization initiators include α-carbonyl compounds (described in US Pat. Nos. 2,367,661 and 2,367,670), acyloin ethers (described in US Pat. No. 2,448,828), α-hydrocarbon substituted aromatics. Aciloin compound (described in US Pat. No. 2,722,512), polynuclear quinone compound (described in US Pat. Nos. 3,046,127 and 2,951,758), a combination of triarylimidazole dimer and p-aminophenyl ketone (US Pat. No. 3,549,367) Acridine and phenazine compounds (JP-A-60-105667, US Pat. No. 4,239,850) and oxadiazole compounds (US Pat. No. 4,212,970). Examples of cationic photopolymerization initiators include organic sulfonium salt systems, iodonium salt systems, phosphonium salt systems, and the like. Antimonates, phosphates and the like are preferably used as counter ions of these compounds.

It is preferable that the usage-amount of a photoinitiator is 0.01-20 mass% of solid content of a coating liquid, and it is further more preferable that it is 0.5-5 mass%. Light irradiation for the polymerization of the liquid crystalline compound is preferably performed using ultraviolet rays. Irradiation energy is preferably ^{10mJ / cm 2 ~10J / cm 2} , further preferably 25~800mJ / cm ^2. Illuminance is preferably 10 to 1,000 / cm ^2, more preferably 20 to 500 mW / cm ^2, further preferably 40~350mW / cm ^2. The irradiation wavelength preferably has a peak at 250 to 450 nm, and more preferably has a peak at 300 to 410 nm. In order to accelerate the photopolymerization reaction, light irradiation may be performed under a nitrogen atmosphere or under heating conditions.

In the composition for forming an optically anisotropic layer, at least one of a fluorine-containing homopolymer or copolymer using a compound represented by the following general formulas (1) to (3) and a monomer represented by the general formula (4): By containing, the molecules of the liquid crystal compound can be substantially horizontally aligned. In the present specification, “horizontal alignment” means that in the case of a rod-like liquid crystal, the molecular long axis and the horizontal plane of the transparent support are parallel, and in the case of a disc-like liquid crystal, the circle of the core of the disc-like liquid crystal compound. The horizontal plane of the board and the transparent support is said to be parallel, but it is not required to be strictly parallel. In the present specification, an orientation with an inclination angle of less than 10 degrees with the horizontal plane is meant. And The inclination angle is preferably 0 to 5 degrees, more preferably 0 to 3 degrees, further preferably 0 to 2 degrees, and most preferably 0 to 1 degree.
Hereinafter, the following general formulas (1) to (4) will be described in order.

式中、Ｒ¹、Ｒ²およびＲ³は各々独立して、水素原子又は置換基を表し、Ｘ¹、Ｘ²およびＸ³は単結合又は二価の連結基を表す。Ｒ¹〜Ｒ³で各々表される置換基としては、好ましくは置換もしくは無置換の、アルキル基（中でも、無置換のアルキル基またはフッ素置換アルキル基がより好ましい）、アリール基（中でもフッ素置換アルキル基を有するアリール基が好ましい）、置換もしくは無置換のアミノ基、アルコキシ基、アルキルチオ基、ハロゲン原子である。Ｘ¹、Ｘ²およびＸ³で各々表される二価の連結基は、アルキレン基、アルケニレン基、二価の芳香族基、二価のヘテロ環残基、−ＣＯ−、−ＮＲ^a−（Ｒ^aは炭素原子数が１〜５のアルキル基または水素原子）、−Ｏ−、−Ｓ−、−ＳＯ−、−ＳＯ₂−およびそれらの組み合わせからなる群より選ばれる二価の連結基であることが好ましい。二価の連結基は、アルキレン基、フェニレン基、−ＣＯ−、−ＮＲ^a−、−Ｏ−、−Ｓ−およびＳＯ₂−からなる群より選ばれる二価の連結基又は該群より選ばれる基を少なくとも二つ組み合わせた二価の連結基であることがより好ましい。アルキレン基の炭素原子数は、１〜１２であることが好ましい。アルケニレン基の炭素原子数は、２〜１２であることが好ましい。二価の芳香族基の炭素原子数は、６〜１０であることが好ましい

In the formula, R ¹ , R ² and R ³ each independently represent a hydrogen atom or a substituent, and X ¹ , X ² and X ^{3 each} represent a single bond or a divalent linking group. The substituent represented by each of R ^{1 to} R ³ is preferably a substituted or unsubstituted alkyl group (more preferably an unsubstituted alkyl group or a fluorine-substituted alkyl group), an aryl group (particularly a fluorine-substituted alkyl). An aryl group having a group is preferred), a substituted or unsubstituted amino group, an alkoxy group, an alkylthio group, and a halogen atom. The divalent linking groups represented by X ¹ , X ² and X ³ are each an alkylene group, an alkenylene group, a divalent aromatic group, a divalent heterocyclic residue, —CO—, —NR ^a — ( R ^a is ^a divalent linking group selected from the group consisting of an alkyl group having 1 to 5 carbon atoms or a hydrogen atom), —O—, —S—, —SO—, —SO ₂ —, and combinations thereof. Preferably there is. The divalent linking group is selected from the group consisting of an alkylene group, a phenylene group, —CO—, —NR ^a —, —O—, —S—, and SO ₂ —, or the group. It is more preferably a divalent linking group in which at least two groups are combined. The alkylene group preferably has 1 to 12 carbon atoms. The alkenylene group preferably has 2 to 12 carbon atoms. The number of carbon atoms of the divalent aromatic group is preferably 6-10.

In the formula, R represents a substituent, and m represents an integer of 0 to 5. When m represents an integer greater than or equal to 2, several R may be same or different. Preferred substituents for R are the same as those listed as preferred ranges for the substituents represented by R ¹ , R ² , and R ³ . m preferably represents an integer of 1 to 3, particularly preferably 2 or 3.

In the formula, R ⁴ , R ⁵ , R ⁶ , R ⁷ , R ⁸ and R ⁹ each independently represent a hydrogen atom or a substituent. The substituents represented by R ⁴ , R ⁵ , R ⁶ , R ⁷ , R ⁸ and R ⁹ are preferably the substituents represented by R ¹ , R ² and R ³ in the general formula (1). It is listed as a thing. As the horizontal alignment agent used in the present invention, the compounds described in paragraphs [0092] to [0096] of JP-A-2005-99248 can be used, and the synthesis method of these compounds is also described in the specification. ing.

  In the formula, R represents a hydrogen atom or a methyl group, X represents an oxygen atom or a sulfur atom, Z represents a hydrogen atom or a fluorine atom, m is an integer of 1 to 6, and n is an integer of 1 to 12. Represents. In addition to the fluorine-containing polymer containing the general formula (4), the compounds described in JP-A-2005-206638 and JP-A-2006-91205 can be used as a horizontal alignment agent as unevenness-improving polymers in coating, Synthetic methods for the compounds are also described in the specification.

  The addition amount of the horizontal alignment agent is preferably 0.01 to 20% by mass, more preferably 0.01 to 10% by mass, and particularly preferably 0.02 to 1% by mass of the mass of the liquid crystal compound. In addition, the compounds represented by the general formulas (1) to (4) may be used alone or in combination of two or more.

[Alignment layer]
As described above, an alignment layer may be used for forming the optically anisotropic layer. The alignment layer is generally provided on a transparent temporary support or an undercoat layer coated on the transparent temporary support. The alignment layer functions so as to define the alignment direction of the liquid crystal compound provided thereon. The orientation layer may be any layer as long as it can impart orientation to the optically anisotropic layer. Preferred examples of the alignment layer include a rubbing treatment layer of an organic compound (preferably a polymer), an oblique deposition layer of an inorganic compound, and a layer having a microgroove, and ω-tricosanoic acid, dioctadecylmethylammonium chloride and stearyl. Examples include a cumulative film formed by Langmuir-Blodgett method (LB film) such as methyl acid, or a layer in which a dielectric is oriented by applying an electric field or a magnetic field.

  Examples of organic compounds for the alignment layer include polymethyl methacrylate, acrylic acid / methacrylic acid copolymer, styrene / maleimide copolymer, polyvinyl alcohol, poly (N-methylolacrylamide), styrene / vinyltoluene copolymer. Polymers such as chlorosulfonated polyethylene, nitrocellulose, polyvinyl chloride, chlorinated polyolefin, polyester, polyimide, vinyl acetate / vinyl chloride copolymer, ethylene / vinyl acetate copolymer, carboxymethyl cellulose, polyethylene, polypropylene and polycarbonate, and Examples of the compound include a silane coupling agent. Examples of preferable polymers include polyimide, polystyrene, polymers of styrene derivatives, gelatin, polyvinyl alcohol, and alkyl-modified polyvinyl alcohol having an alkyl group (preferably having 6 or more carbon atoms).

  A polymer is preferably used for forming the alignment layer. The type of polymer that can be used can be determined according to the orientation (particularly the average tilt angle) of the liquid crystal compound. For example, in order to align the liquid crystalline compound horizontally, a polymer that does not decrease the surface energy of the alignment layer (ordinary alignment polymer) is used. Specific types of polymers are described in various documents about liquid crystal cells or optical compensation sheets. For example, polyvinyl alcohol or modified polyvinyl alcohol, a copolymer with polyacrylic acid or polyacrylate, polyvinyl pyrrolidone, cellulose, or modified cellulose are preferably used. The alignment layer material may have a functional group capable of reacting with the reactive group of the liquid crystal compound. The reactive group can be introduced by introducing a repeating unit having a reactive group in the side chain or as a substituent of a cyclic group. It is more preferable to use an alignment layer that forms a chemical bond with the liquid crystal compound at the interface. Such an alignment layer is described in JP-A-9-152509, and acid chloride or Karenz MOI (manufactured by Showa Denko KK). The modified polyvinyl alcohol in which an acrylic group is introduced into the side chain by using The thickness of the alignment layer is preferably 0.01 to 5 μm, and more preferably 0.05 to 2 μm. The alignment layer may have a function as an oxygen blocking film.

  A polyimide film (preferably fluorine atom-containing polyimide) widely used as an alignment layer for LCD is also preferable as the organic alignment layer. This is a polyamic acid (for example, LQ / LX series manufactured by Hitachi Chemical Co., Ltd., SE series manufactured by Nissan Chemical Co., Ltd., etc.) is applied to the support surface and baked at 100 to 300 ° C. for 0.5 to 1 hour. And then obtained by rubbing.

  Moreover, the rubbing process can utilize a processing method widely adopted as a liquid crystal alignment process of LCD. That is, a method of obtaining the orientation by rubbing the surface of the orientation layer in a certain direction using paper, gauze, felt, rubber, nylon, polyester fiber or the like can be used. Generally, it is carried out by rubbing several times using a cloth or the like in which fibers having a uniform length and thickness are planted on average.

Moreover, as a vapor deposition material for the inorganic oblique vapor deposition film, SiO ₂ is representative, and metal oxides such as TiO ₂ and ZnO ₂ , fluorides such as MgF ₂ , and metals such as Au and Al. The metal oxide can be used as an oblique deposition material as long as it has a high dielectric constant, and is not limited to the above. The inorganic oblique deposition film can be formed using a deposition apparatus. An inorganic oblique vapor deposition film can be formed by fixing the film (support) and performing vapor deposition, or moving the long film and performing continuous vapor deposition.

[Liquid crystal display substrate formed by transfer]
FIGS. 3A and 3B are schematic cross-sectional views showing an example of a transfer material used for manufacturing a substrate for a liquid crystal display device formed by transfer. In the transfer material 21 of FIG. 3A, an optically anisotropic layer 25 and a transfer adhesive layer 27 are formed in this order via an alignment layer 26 rubbed on a temporary support 23. The optically anisotropic layer 25 is obtained by applying a solution containing a liquid crystal compound, aging and aligning at a liquid crystal phase formation temperature, and solidifying by irradiation with heat or ionizing radiation in that state. FIG. 3C shows a schematic cross-sectional view of an example of a substrate for a liquid crystal display device formed by transferring the transfer material 21. The substrate 22 for liquid crystal display device of the present invention is manufactured by laminating and transferring the transfer material 21 to the substrate 24 having the uneven steps through the transfer adhesive layer 27. The transfer adhesive layer 27 is not particularly limited as long as it has sufficient transferability, and examples thereof include an adhesive layer made of an adhesive, a photosensitive resin layer, a pressure-sensitive resin layer, and a heat-sensitive resin layer. For applications that require heat resistance, such as substrates for display devices, a photosensitive or heat-sensitive resin layer is desirable. The example of FIG. 3B is a transfer material 21 in which a mechanical property control layer 28 is formed between the temporary support 23 and the alignment layer 26 of FIG. In order to provide good transferability, it is desirable that the peelability between the optically anisotropic layer 25 and the alignment layer 26 is high, in order to prevent air bubbles from being mixed in the transfer process and to absorb irregularities on the substrate for the liquid crystal display device. A mechanical property control layer 28 is provided. As the mechanical property control layer, a layer exhibiting flexible elasticity, a layer softened by heat, a layer exhibiting fluidity by heat, or the like is preferable. In addition to the temporary support 23, the alignment layer 26 in FIG. 3A and the alignment layer 26 and the mechanical property control layer 28 in FIG. In the case where the optical characteristics due to deterioration due to light and the like are affected, it is necessary to add a removal step. In general, treatment by liquid treatment may be performed, and treatment with a weak alkaline solution is more preferable. Moreover, when peeling a temporary support body, it is more preferable to make these unnecessary layers adhere to a temporary support body, and to peel simultaneously, since the process by a liquid process is reduced.

[Temporary support]
The temporary support used for the transfer material may be transparent or opaque and is not particularly limited. Examples of polymers constituting the temporary support include cellulose esters (eg, cellulose acetate, cellulose propionate, cellulose butyrate), polyolefins (eg, norbornene-based polymers), poly (meth) acrylic acid esters (eg, poly Methyl methacrylate), polycarbonate, polyester and polysulfone, norbornene-based polymers. For the purpose of inspecting optical properties in the production process, the transparent support is preferably a transparent and low birefringent material, and from the viewpoint of low birefringence, cellulose ester and norbornene are preferred. As a commercially available norbornene-based polymer, Arton (manufactured by JSR Co., Ltd.), Zeonex, Zeonore (manufactured by Nippon Zeon Co., Ltd.), or the like can be used. Inexpensive polycarbonate, polyethylene terephthalate, and the like are also preferably used.

[Transfer adhesive layer]
The adhesive layer for transfer is not particularly limited as long as it is transparent, uncolored and has sufficient transferability, and is a pressure-sensitive adhesive layer, particularly a photosensitive resin layer, a pressure-sensitive resin layer, a heat-sensitive resin layer, etc. However, a photosensitive or heat-sensitive resin layer is desirable because of the bake resistance necessary for a substrate for a liquid crystal display device. As the pressure-sensitive adhesive, for example, a material that is excellent in optical transparency and exhibits appropriate wettability, cohesiveness, and adhesive pressure-sensitive adhesive properties is preferable. Specific examples include pressure-sensitive adhesives prepared by appropriately using polymers such as acrylic polymers, silicon polymers, polyesters, polyurethanes, polyethers, and synthetic rubbers as base polymers. Control of the adhesive properties of the pressure-sensitive adhesive layer can be achieved by, for example, controlling the degree of crosslinking and molecular weight depending on the composition and molecular weight of the base polymer forming the pressure-sensitive adhesive layer, the crosslinking method, the content ratio of the crosslinkable functional group, the blending ratio of the crosslinking agent, etc. It can be suitably performed by a conventionally known method such as adjustment.

  The pressure-sensitive resin layer is not particularly limited as long as adhesiveness is exhibited by applying pressure, and rubber-based, acrylic-based, vinyl ether-based, and silicone-based pressure-sensitive adhesives can be used as the pressure-sensitive adhesive. In the production stage and coating stage of adhesives, solvent-based adhesives, non-aqueous emulsion adhesives, water-based emulsion adhesives, water-soluble adhesives, hot melt adhesives, liquid curable adhesives, and delayed A tack-type adhesive can be used. The rubber-based pressure-sensitive adhesive is disclosed in New Polymer Library 13 “Adhesion Technology”, Kobunshi Publishing Co., Ltd. 41 (1987). The vinyl ether-based pressure-sensitive adhesive includes those having a main component of an alkyl vinyl ether polymer having 2 to 4 carbon atoms, vinyl chloride / vinyl acetate copolymer, vinyl acetate polymer, polyvinyl butyral and the like mixed with a plasticizer. As the silicone-based pressure-sensitive adhesive, a rubbery siloxane can be used to give film formation and film condensing power, and a resinous siloxane can be used to give adhesiveness and adhesion.

  The heat-sensitive resin layer is not particularly limited as long as it exhibits adhesiveness by applying heat, and examples of the heat-sensitive adhesive include hot-melt compounds and thermoplastic resins. Examples of the heat-meltable compound include low molecular weight products of thermoplastic resins such as polystyrene resin, acrylic resin, styrene-acrylic resin, polyester resin, and polyurethane resin, carnauba wax, molasses, candelilla wax, rice wax, and Plant waxes such as aucuric wax, beeswax, insect wax, shellac, and animal waxes such as whale wax, paraffin wax, microcrystalline wax, polyethylene wax, Fischer-Tropsch wax, ester wax, and oxidation Examples include various waxes such as petroleum waxes such as waxes, and mineral waxes such as montan wax, ozokerite, and ceresin wax. Furthermore, rosin derivatives such as rosin, hydrogenated rosin, polymerized rosin, rosin modified glycerin, rosin modified maleic resin, rosin modified polyester resin, rosin modified phenolic resin and ester gum, phenol resin, terpene resin, ketone resin, cyclopentadiene Examples thereof include resins, aromatic hydrocarbon resins, aliphatic hydrocarbon resins, and alicyclic hydrocarbon resins.

  These heat-meltable compounds preferably have a molecular weight of usually 10,000 or less, particularly 5,000 or less and a melting point or softening point in the range of 50 to 150 ° C. These hot melt compounds may be used alone or in combination of two or more. Examples of the thermoplastic resin include ethylene copolymers, polyamide resins, polyester resins, polyurethane resins, polyolefin resins, acrylic resins, and cellulose resins. Of these, ethylene copolymers and the like are particularly preferably used.

The photosensitive resin layer is made of a photosensitive resin composition, and may be positive or negative and is not particularly limited, and a commercially available resist material can also be used. The development is preferably aqueous development with an organic solvent of 5% or less, and particularly preferably alkaline development, in view of environmental and explosion-proof problems in the liquid crystal display substrate forming step. The photosensitive resin layer is preferably formed from a resin composition containing at least (1) a polymer, (2) a monomer or oligomer, and (3) a photopolymerization initiator or a photopolymerization initiator system.
Hereinafter, the components (1) to (3) will be described.

(1) Polymer As the polymer (hereinafter sometimes simply referred to as “binder”), an alkali-soluble resin composed of a polymer having a polar group such as a carboxylic acid group or a carboxylic acid group in the side chain is preferable. Examples thereof include JP-A-59-44615, JP-B-54-34327, JP-B-58-12577, JP-B-54-25957, JP-A-59-53836, and JP-A-57-36. A methacrylic acid copolymer, an acrylic acid copolymer, an itaconic acid copolymer, a crotonic acid copolymer, a maleic acid copolymer, a partially esterified maleic acid copolymer as described in JP-A-59-71048 Etc. Moreover, the cellulose derivative which has a carboxylic acid group in a side chain can also be mentioned, In addition to this, what added the cyclic acid anhydride to the polymer which has a hydroxyl group can also be used preferably. Further, as particularly preferred examples, copolymers of benzyl (meth) acrylate and (meth) acrylic acid described in US Pat. No. 4,139,391, benzyl (meth) acrylate, (meth) acrylic acid and other monomers And a multi-component copolymer. These binder polymers having polar groups may be used alone or in the form of a composition used in combination with ordinary film-forming polymers. The polymer content relative to the total solid content is generally 20 to 50% by mass, and preferably 25 to 45% by mass.

(2) Monomer or oligomer The monomer or oligomer used in the photosensitive resin layer is preferably a monomer or oligomer that has two or more ethylenically unsaturated double bonds and undergoes addition polymerization by light irradiation. . Examples of such monomers and oligomers include compounds having at least one addition-polymerizable ethylenically unsaturated group in the molecule and having a boiling point of 100 ° C. or higher at normal pressure. Examples include monofunctional acrylates and monofunctional methacrylates such as polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate and phenoxyethyl (meth) acrylate; polyethylene glycol di (meth) acrylate, polypropylene glycol di (meth) ) Acrylate, trimethylolethane triacrylate, trimethylolpropane tri (meth) acrylate, trimethylolpropane diacrylate, neopentyl glycol di (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, di Pentaerythritol hexa (meth) acrylate, dipentaerythritol penta (meth) acrylate, hexa Diol di (meth) acrylate, trimethylolpropane tri (acryloyloxypropyl) ether, tri (acryloyloxyethyl) isocyanurate, tri (acryloyloxyethyl) cyanurate, glycerin tri (meth) acrylate; multifunctional such as trimethylolpropane and glycerin Polyfunctional acrylates and polyfunctional methacrylates such as those obtained by adding ethylene oxide or propylene oxide to alcohol and then (meth) acrylated can be mentioned.

Further, urethane acrylates described in JP-B-48-41708, JP-B-50-6034 and JP-A-51-37193; JP-A-48-64183, JP-B-49-43191 And polyester acrylates described in JP-B-52-30490; polyfunctional acrylates and methacrylates such as epoxy acrylates which are reaction products of epoxy resin and (meth) acrylic acid.
Among these, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and dipentaerythritol penta (meth) acrylate are preferable.
In addition, “polymerizable compound B” described in JP-A-11-133600 can also be mentioned as a preferable example.
These monomers or oligomers may be used alone or in admixture of two or more. The content of the colored resin composition with respect to the total solid content is generally 5 to 50% by mass, and 10 to 40% by mass. Is preferred.

(3) Photopolymerization initiator or photopolymerization initiator system As the photopolymerization initiator or photopolymerization initiator system used in the photosensitive resin layer, a vicinal poly disclosed in US Pat. No. 2,367,660 is used. Ketaldonyl compounds, acyloin ether compounds described in US Pat. No. 2,448,828, aromatic acyloin compounds substituted with α-hydrocarbons described in US Pat. No. 2,722,512, US Pat. No. 3,046,127 And a polynuclear quinone compound described in U.S. Pat. No. 2,951,758, a combination of a triarylimidazole dimer described in U.S. Pat. No. 3,549,367 and a p-aminoketone, and a benzoin described in JP-B 51-48516. Thiazole compounds and trihalomethyl-s-triazine compounds, US Pat. No. 4,239,850 It may be mentioned triazine compounds, U.S. Patent trihalomethyl oxadiazole compounds described in No. 4,212,976 specification or the like - trihalomethyl listed in. In particular, trihalomethyl-s-triazine, trihalomethyloxadiazole, and triarylimidazole dimer are preferable.
In addition, “polymerization initiator C” described in JP-A-11-133600 can also be mentioned as a preferable example.
These photopolymerization initiators or photopolymerization initiator systems may be used singly or as a mixture of two or more, but it is particularly preferable to use two or more. When at least two kinds of photopolymerization initiators are used, display characteristics, particularly display unevenness, can be reduced.
The content of the photopolymerization initiator or the photopolymerization initiator system with respect to the total solid content of the colored resin composition is generally 0.5 to 20% by mass, and preferably 1 to 15% by mass.

  The photosensitive resin layer preferably contains an appropriate surfactant from the viewpoint of effectively preventing unevenness. The surfactant can be used as long as it is mixed with the photosensitive resin composition. Preferred surfactants used in the present invention include JP2003-337424A [0090] to [0091], JP2003-177522A [0092] to [0093], and JP2003-177523A [0094]. ] To [0095], JP 2003-177521 A [0096] to [0097], JP 2003-177519 A [0098] to [0099], JP 2003-177520 A [0100] to [0101]. [0102] to [0103] of JP-A-11-133600 and surfactants disclosed as inventions of JP-A-6-16684 are preferred. In order to obtain a higher effect, a fluorosurfactant and / or a silicon surfactant (a fluorosurfactant or a silicon surfactant, a surfactant containing both a fluorine atom and a silicon atom) ) Or two or more types are preferable, and a fluorine-based surfactant is most preferable. When using a fluorosurfactant, the number of fluorine atoms in the fluorine-containing substituent in the surfactant molecule is preferably 1 to 38, more preferably 5 to 25, and most preferably 7 to 20. If the number of fluorine atoms is too large, it is not preferable in that the solubility in an ordinary solvent not containing fluorine is lowered. When the number of fluorine atoms is too small, it is not preferable in that the effect of improving unevenness cannot be obtained.

  As a particularly preferred surfactant, the following general formula (a) and a monomer represented by the general formula (b) are included, and the mass ratio of the general formula (a) / the general formula (b) is 20/80 to 60 / The thing containing 40 copolymers is mentioned.

In the formula, R ¹ , R ² and R ³ each independently represent a hydrogen atom or a methyl group, and R ⁴ represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms. n represents an integer of 1 to 18, and m represents an integer of 2 to 14. p and q represent integers of 0 to 18, but are not included when both p and q are simultaneously 0.

A particularly preferred surfactant represented by the general formula (a) is referred to as a monomer (a), and a monomer represented by the general formula (b) is referred to as a monomer (b). C _m F _{2m + 1} shown in the general formula (a) may be linear or branched. m shows the integer of 2-14, Preferably it is an integer of 4-12. The content of C _m F _{2m + 1} is preferably 20 to 70% by mass, particularly preferably 40 to 60% by mass, based on the monomer (a). R ¹ represents a hydrogen atom or a methyl group. Moreover, n shows 1-18, and 2-10 are preferable especially. R ² and R ³ shown in the general formula (b) each independently represent a hydrogen atom or a methyl group, and R ⁴ represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms. p and q each represent an integer of 0 to 18, but p and q do not include 0. p and q are preferably 2 to 8.

  Moreover, as a particularly preferable monomer (a) contained in one molecule of the surfactant, those having the same structure or those having different structures within the above defined range may be used. The same applies to the monomer (b).

  The weight average molecular weight Mw of the particularly preferable surfactant is preferably 1000 to 40000, and more preferably 5000 to 20000. The surfactant contains the monomers represented by the general formula (a) and the general formula (b), and the weight ratio of the general formula (a) / the general formula (b) is 20/80 to 60/40. It is characterized by containing a coalescence. Particularly preferred 100 parts by weight of the surfactant is preferably composed of 20 to 60 parts by weight of the monomer (a), 80 to 40 parts by weight of the monomer (b), and the remaining part by weight of other optional monomers. It is preferable that the monomer (a) is composed of 25 to 60 parts by mass, the monomer (b) is composed of 60 to 40 parts by mass, and other optional monomers are composed of the remaining part by mass.

  Examples of copolymerizable monomers other than the monomers (a) and (b) include styrene, vinyl toluene, α-methyl styrene, 2-methyl styrene, chlorostyrene, vinyl benzoic acid, sodium vinylbenzene sulfonate, aminostyrene, and the like. Styrene and its derivatives, substituted products, dienes such as butadiene and isoprene, acrylonitrile, vinyl ethers, methacrylic acid, acrylic acid, itaconic acid, crotonic acid, maleic acid, partially esterified maleic acid, styrene sulfonic acid maleic anhydride, silica And vinyl monomers such as cinnamate, vinyl chloride and vinyl acetate.

  Particularly preferred surfactants are copolymers such as monomer (a) and monomer (b), but the monomer sequence is not particularly limited and may be random or regular, for example, block or graft. Furthermore, particularly preferable surfactants can be used by mixing two or more of those having different molecular structures and / or monomer compositions.

  As content of the said surfactant, 0.01-10 mass% is preferable with respect to the layer total solid of a photosensitive resin layer, and 0.1-7 mass% is especially preferable. The surfactant contains a predetermined amount of a surfactant having a specific structure, an ethylene oxide group, and a polypropylene oxide group, and a liquid crystal provided with the photosensitive resin layer by containing it in a specific range in the photosensitive resin layer. Display unevenness of the display device is improved. If it is less than 0.01% by mass relative to the total solid content, the display unevenness is not improved, and if it exceeds 10% by mass, the effect of improving the display unevenness does not appear much. When the above-mentioned particularly preferable surfactant is contained in the photosensitive resin layer to produce a color filter, it is preferable in that display unevenness is improved.

  Specific examples of preferable fluorine-based surfactants include compounds described in paragraph numbers [0054] to [0063] of JP-A No. 2004-163610. Moreover, the following commercially available surfactant can also be used as it is. Examples of commercially available surfactants that can be used include F-top EF301 and EF303 (manufactured by Shin-Akita Kasei Co., Ltd.), Florard FC430 and 431 (manufactured by Sumitomo 3M Ltd.), MegaFuck F171, F173, F176, F189, and R08. (Dainippon Ink Co., Ltd.), Surflon S-382, SC101, 102, 103, 104, 105, 106 (Asahi Glass Co., Ltd.) and other fluorine-based surfactants, or silicon-based surfactants. be able to. Polysiloxane polymers KP-341 (manufactured by Shin-Etsu Chemical Co., Ltd.) and Troisol S-366 (manufactured by Troy Chemical Co., Ltd.) can also be used as the silicon surfactant. In the present invention, a compound described in paragraphs [0046] to [0052] of JP-A No. 2004-331812, which is a fluorine-based surfactant not containing the monomer represented by the general formula (a), is used. Is also preferable.

[Mechanical property control layer]
It is preferable to form a mechanical property control layer between the temporary support of the transfer material and the optically anisotropic layer in order to control the mechanical property and the unevenness followability. As the mechanical property control layer, those exhibiting flexible elasticity, those softened by heat, those exhibiting fluidity by heat, and the like are preferable, and a thermoplastic resin layer is particularly preferable. As the component used for the thermoplastic resin layer, organic polymer substances described in JP-A-5-72724 are preferable, and the polymer softening point according to the Viker Vicat method (specifically, the American Material Testing Method ASTM D1 ASTM D1235). It is particularly preferable that the softening point by the measurement method is selected from organic polymer substances having a temperature of about 80 ° C. or less. Specifically, polyolefins such as polyethylene and polypropylene, ethylene copolymers such as ethylene and vinyl acetate or saponified products thereof, ethylene and acrylic acid esters or saponified products thereof, polyvinyl chloride, vinyl chloride and vinyl acetate and saponified products thereof. Vinyl chloride copolymer such as fluoride, polyvinylidene chloride, vinylidene chloride copolymer, polystyrene, styrene copolymer such as styrene and (meth) acrylic acid ester or saponified product thereof, polyvinyl toluene, vinyl toluene and (meta ) Vinyl toluene copolymer such as acrylic ester or saponified product thereof, poly (meth) acrylic ester, (meth) acrylic ester copolymer such as butyl (meth) acrylate and vinyl acetate, vinyl acetate copolymer Combined nylon, copolymer nylon, N-alkoxy Chill nylon, and organic polymeric polyamide resins such as N- dimethylamino nylon.

  In the transfer material, it is preferable to provide an intermediate layer for the purpose of preventing mixing of components during application of a plurality of application layers and during storage after application. As the intermediate layer, an oxygen blocking film having an oxygen blocking function described in JP-A-5-72724 and an alignment layer for forming the optical anisotropy are preferably used. Among these, a layer formed by mixing polyvinyl alcohol or polyvinyl pyrrolidone and one or more of their modified products is particularly preferable. The thermoplastic resin layer, the oxygen barrier film, and the alignment layer can also be used.

  A thin protective film is preferably provided on the resin layer in order to protect it from contamination and damage during storage. The protective film may be made of the same or similar material as the temporary support, but must be easily separated from the resin layer. As the protective film material, for example, silicon paper, polyolefin or polytetrafluoroethylene sheet is suitable.

Optically anisotropic layer, photosensitive resin layer, transfer adhesive layer, and optionally formed orientation layer, thermoplastic resin layer and intermediate layer are dip coating, air knife coating, curtain coating, roller coating. It can be formed by coating by a wire bar coating method, a gravure coating method or an extrusion coating method (US Pat. No. 2,681,294). Two or more layers may be applied simultaneously. The method of simultaneous application is described in US Pat. Nos. 2,761,791, 2,941,898, 3,508,947, and 3,526,528 and Yuji Harasaki, Coating Engineering, page 253, Asakura Shoten (1973).

[Method of transferring transfer material onto substrate]
There is no particular limitation on the method for transferring the transfer material onto the substrate. For example, the transfer material of the present invention formed in the form of a film can be attached by pressing or thermocompression bonding with a roller or flat plate heated and / or pressurized using a laminator with the transfer adhesive layer side facing the substrate surface. it can. Specific examples include laminators and laminating methods described in JP-A-7-110575, JP-A-11-77942, JP-A-2000-334836, and JP-A-2002-148794. From this point of view, it is preferable to use the method described in JP-A-7-110575. Thereafter, the support may be peeled off, and another layer such as an electrode layer may be formed on the surface of the optically anisotropic layer exposed by peeling.

[Liquid crystal display substrate formed by irradiation with polarized light]
FIG. 4A is a schematic cross-sectional view of an example of a substrate having an optically anisotropic layer forming layer 29 before irradiation with polarized light, and FIG. 4B is an outline of an example of a substrate for a liquid crystal display device formed after irradiation with polarized light. A cross-sectional view is shown.
FIG. 4A shows an optically anisotropic layer forming layer 29 formed on a substrate 24 having uneven steps. When polarized light irradiation is performed on FIG. 4A, the optical anisotropy appears in the optical anisotropic layer forming layer 29, so that the substrate for a liquid crystal display device of the present invention shown in FIG. 4B is obtained.

A substrate for a liquid crystal display device formed by irradiation with polarized light can be produced by performing polarization irradiation after a coating solution containing a material whose orientation state is determined in the polarization direction is dried on the substrate. In order to obtain an optically anisotropic layer having a large in-plane retardation by performing photo-alignment by irradiation with polarized light, it is necessary to apply and dry a coating liquid containing a liquid crystal compound and irradiate with polarized light in an aligned state. is there. The polarized light irradiation is preferably performed in an inert gas atmosphere having an oxygen concentration of 0.5% or less. The irradiation energy is preferably ^{20mJ / cm 2 ~10J / cm 2} , further preferably 100 to 800 mJ / cm ^2. The illuminance is preferably 20 to 1000 mW / cm ^2, more preferably 50 to 500 mW / cm ^2, further preferably 100 to 350 mW / cm ^2. Although there is no restriction | limiting in particular about the kind of liquid crystalline compound hardened | cured by polarized light irradiation, The liquid crystalline compound which has an ethylenically unsaturated group as a reactive group is preferable. The irradiation wavelength preferably has a peak at 300 to 450 nm, and more preferably has a peak at 350 to 400 nm. In addition, the polarized light irradiation may be performed simultaneously with the photopolymerization process in the alignment fixation, the polarized light irradiation may be performed first and then the non-polarized light irradiation may be further fixed, or the non-polarized light irradiation may be performed first. It may be irradiated with polarized light after fixing.

  When a coating liquid containing a rod-like liquid crystal compound having a reactive group is used as the liquid crystal compound, the cholesteric alignment or the hybrid cholesteric alignment twisted while gradually changing the tilt angle in the thickness direction is distorted in the polarization irradiation direction. If you can. As a method of distorting, a method using a dichroic liquid crystalline polymerization initiator (EP 1389199 A1) or a method using a rod-like liquid crystalline compound having a photoalignable functional group such as a cinnamoyl group in the molecule (Japanese Patent Laid-Open No. 2002-6138). Gazette). Any of them can be used in the present invention.

[Post-curing by UV irradiation after polarized irradiation]
The optically anisotropic layer is further irradiated with polarized or non-polarized ultraviolet rays after the first polarized irradiation (irradiation for photo-alignment) to increase the reaction rate of the reactive group (post-curing), adhesion, etc. It becomes possible to produce at a high conveyance speed. Post-curing may be polarized or non-polarized, but is preferably polarized. Moreover, it is preferable to carry out post-curing twice or more, and polarized light or non-polarized light may be combined with polarized light and non-polarized light. However, when combined, it is preferable to irradiate polarized light before non-polarized light. Irradiation with ultraviolet rays may or may not be replaced with an inert gas, but is preferably performed in an inert gas atmosphere having an oxygen concentration of 0.5% or less. The irradiation energy is preferably ^{20mJ / cm 2 ~10J / cm 2} , further preferably 100 to 800 mJ / cm ^2. The illuminance is preferably 20 to 1000 mW / cm ^2, more preferably 50 to 500 mW / cm ^2, further preferably 100 to 350 mW / cm ^2. In the case of polarized light irradiation, the irradiation wavelength preferably has a peak at 300 to 450 nm, and more preferably 350 to 400 nm. In the case of non-polarized light irradiation, it preferably has a peak at 200 to 450 nm, and more preferably has a peak at 250 to 400 nm.

[Liquid crystal display substrate]
5A and 5B are schematic cross-sectional views of an example of the substrate for a liquid crystal display device of the present invention. 5A and 5B, an optically anisotropic layer is formed on the substrate 24 having the black matrix 33 and the color filter layers 32R, 32G, and 32B on the substrate 31 and having uneven steps. FIG. 5A shows a substrate 22 for a liquid crystal display device, which is formed by transfer, and FIG. 5B is formed by irradiation with polarized light. In FIG. 5A, a transfer adhesive layer 27 and an optically anisotropic layer 25 are formed in this order on a substrate 24 having uneven steps. In FIG. 5B, the optically anisotropic layer 25 is directly formed on the substrate 24 having uneven steps, but other layers such as an alignment layer may be interposed.

[Liquid Crystal Display]
FIG. 6 is a schematic cross-sectional view of an example of a liquid crystal display device. 6A and 6B, the transparent electrode layer 41 and the alignment layer 42 are formed on the liquid crystal display device substrate 22 and the TFT 44 shown in FIGS. 5A and 5B, respectively. The liquid crystal display device includes a liquid crystal cell 45 which is manufactured by sandwiching the liquid crystal layer 43 between the substrates for the liquid crystal display device. On both sides of the liquid crystal cell 45, a protective film 47 made of two cellulose acetate films and a polarizing plate 48 formed by a polarizing layer 46 sandwiched therebetween are bonded together with an adhesive. By changing the voltage applied between the upper and lower 41, the alignment state of the liquid crystal layer changes, so that the liquid crystal display device is switched. 42 is generally rubbed to determine the orientation of 43. An optical compensation sheet may be used as 47 on the liquid crystal cell side of the two 47 sandwiching the polarizing layer. Furthermore, by making the cell gap of 43 a multi-gap that changes for each RGB, it is possible to design a liquid crystal cell with a high degree of freedom. Since the liquid crystal display substrate 22 of the present invention does not cause light leakage due to alignment defects or the like, a liquid crystal display device using this can achieve high contrast. In addition, since the substrate for a liquid crystal display device of the present invention is provided with an optically anisotropic layer in a liquid crystal cell, it is stronger on a glass substrate than a conventional optically anisotropic film that easily changes in size due to temperature and humidity. As a result, corner unevenness is less likely to occur.

  Hereinafter, the substrate for a liquid crystal display device of the present invention will be described in detail in the following examples. However, the present invention is not limited to this embodiment, and other embodiments can be carried out with reference to the following description and conventionally known methods, and the present invention is limited to the embodiments described below. It is not something.

[Preparation of color filter substrate with uneven steps]
FUJIFILM RESEARCH & DEVELOPMENT No. 44 (1999), page 25, a transcer system (manufactured by Fuji Photo Film Co., Ltd.) was used to produce a color filter substrate having a black matrix and three color filters of RGB on a glass substrate, and a laser microscope (Measurement of unevenness step was performed using Keyence Co., Ltd.). From the measurement result of the uneven step shown in FIG. 6, it can be seen that there is a 1.4 to 1.9 μm uneven step at the edge of each pixel portion.

[Example 1]
As shown below, a transfer material having an optically anisotropic layer was prepared, and the transfer material was transferred onto the color filter substrate, whereby a liquid crystal display device substrate of Example 1 was prepared.

(Preparation of coating liquid LC-1 for optically anisotropic layer)
After the following composition was prepared, it was filtered through a polypropylene filter having a pore size of 0.2 μm and used as a coating liquid LC-1 for an optically anisotropic layer.
LC-1-1 was synthesized based on the method described in JP-A No. 2004-123882.
LC-1-2 is Tetrahedron Lett. It was synthesized according to the method described in Journal, Vol. 43, page 6793 (2002).
────────────────────────────────── ――――――
Coating composition for optically anisotropic layer (%)
────────────────────────────────── ――――――
Rod-shaped liquid crystal (LC-1-1) 19.57
Horizontal alignment agent (LC-1-2) 0.01
Cationic photopolymerization initiator (Cyracure UVI 6974, Dow Chemical)
0.40
Polymerization control agent (IRGANOX1076, Ciba Specialty Chemicals Co., Ltd.)
0.02
Methyl ethyl ketone 80.00
────────────────────────────────── ――――――

(Preparation of coating liquid AD-1 for transfer adhesive layer)
After the following composition was prepared, it was filtered through a polypropylene filter having a pore size of 0.2 μm and used as a coating solution AD-1 for a transfer adhesive layer (photosensitive resin layer).
────────────────────────────────── ――――――
Coating solution composition for transfer adhesive layer (% by mass)
────────────────────────────────── ――――――
Benzyl methacrylate / methacrylic acid / methyl methacrylate = 35.9 / 22.4 / 41.7 molar ratio random copolymer (weight average molecular weight 38,000) 8.05
KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.) 4.83
Radical photopolymerization initiator (2-trichloromethyl-5- (p-styrylstyryl) 1,3,4-oxadiazole) 0.12
Hydroquinone monomethyl ether 0.002
Megafuck F-176PF (Dainippon Ink Chemical Co., Ltd.) 0.05
Propylene glycol monomethyl ether acetate 34.80
Methyl ethyl ketone 50.538
Methanol 1.61
────────────────────────────────── ――――――

(Production of transfer material)
On the temporary support of a 100 μm-thick easy-adhesive polyethylene terephthalate film (Cosmo Shine A4100, manufactured by Toyobo Co., Ltd.), in order using a wire bar, the coating solution CU-1 for the thermoplastic resin layer, for the alignment layer The coating liquid AL-1 was applied and dried. The dry film thicknesses were 14.6 μm and 1.6 μm, respectively. Next, LC-1 was applied using a wire bar, dried at a film surface temperature of 105 ° C. for 2 minutes to form a liquid crystal phase, and then an air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.) of 160 W / cm under air. ) To irradiate ultraviolet rays having an illuminance of 240 mW / cm ² and an irradiation amount of 600 mJ / cm ² to fix the orientation state, and form an optically anisotropic layer having a thickness of 1.8 μm. The adhesive layer coating solution AD-1 was applied and dried to form a 1.0 μm photosensitive resin layer, and a transfer material was prepared.

The color filter substrate was washed with a rotating brush having nylon hair while spraying a glass detergent solution adjusted to 25 ° C. for 20 seconds by showering, and after pure water shower washing, a silane coupling solution (N-β (aminoethyl)) A 0.3% aqueous solution of γ-aminopropyltrimethoxysilane, trade name: KBM-603, Shin-Etsu Chemical Co., Ltd.) was sprayed for 20 seconds with a shower and washed with pure water. This substrate was heated at 100 ° C. for 2 minutes by a substrate preheating apparatus.
Using a laminator (manufactured by Hitachi Industries, Ltd. (Lamic II type)) as the transfer material, the color filter substrate heated at 100 ° C. for 2 minutes was fed with a rubber roller temperature of 130 ° C. and a linear pressure of 100 N / cm. After laminating at a speed of 2.2 m / min and peeling off the protective film, the whole surface was exposed with an ultra high pressure mercury lamp at an exposure amount of 50 mJ / cm 2 and further baked at 240 ° C. for 2 hours to obtain the liquid crystal display device of Example 1 A substrate was obtained.

[Comparative Example 1]
The optically anisotropic layer coating solution is directly spin coated on the color filter substrate, dried at a film surface temperature of 105 ° C. for 2 minutes to form a liquid crystal phase, and then air-cooled metal halide of 160 W / cm in air. Using a lamp (made by Eye Graphics Co., Ltd.), the alignment state was fixed by irradiating with ultraviolet rays having an illuminance of 240 mW / cm ² and an irradiation amount of 600 mJ / cm ² , and an optical anisotropy of 1.8 μm in thickness. A layer was formed to produce a substrate for a liquid crystal display device of Comparative Example 1.

[Example 2]
As shown below, an optically anisotropic layer was formed on a color filter substrate by irradiation with polarized light, and a liquid crystal display substrate of Example 2 was produced.

(Preparation of coating liquid LC-2 for optically anisotropic layer)
After preparing the following composition, it was filtered through a polypropylene filter having a pore size of 0.2 μm and used as a coating liquid LC-2 for an optically anisotropic layer.
LC-2-1 is a Tetrahedron Lett. Synthesized according to the method described in Journal, Vol. 43, page 6793 (2002). LC-1-2 was synthesized by the method described in EP1388538A1, page 21.
────────────────────────────────── ――――――
Coating composition for optically anisotropic layer (%)
────────────────────────────────── ――――――
Bar-shaped liquid crystal (Paliocolor LC242, BASF Japan) 28.38
Chiral agent (Paliocolor LC756, BASF Japan)
3.34
4,4′-Azoxydianisole 0.27
Horizontal alignment agent (LC-2-1) 0.10
Photopolymerization initiator (LC-2-2) 1.34
Methyl ethyl ketone 66.57
────────────────────────────────── ――――――

(Polarized UV irradiation device POLUV-1)
A microwave emission type ultraviolet irradiation device (Light Hammer 10, 240 W / cm, manufactured by Fusion UV Systems) equipped with D-Bulb having a strong emission spectrum at 350 to 400 nm as a UV light source was separated from the irradiation surface by 3 cm. At the position, a wire grid polarizing filter (ProFlux PPL02 (high transmittance type), manufactured by Moxtek) was installed to produce a polarized UV irradiation apparatus. The maximum illuminance of this device was 400 mW / cm ² .

After the polyimide alignment layer formed on the color filter substrate is rubbed, the optically anisotropic layer coating liquid LC-2 is applied thereon with a # 6 wire bar coater, and the film surface temperature is 95 ° C. for 2 minutes. A layer having a uniform liquid crystal phase was formed by heat drying. Further, immediately after aging, this layer was irradiated with polarized UV using POLUV-1 so that the transmission axis of the polarizing plate was in the TD direction of the transparent support in a nitrogen atmosphere having an oxygen concentration of 0.3% or less. (Illuminance 200 mW / cm 2, irradiation amount 200 mJ / cm ² ) to fix the optical anisotropic layer to form an optically anisotropic layer having a thickness of 2.75 μm. This is the liquid crystal display device of Example 2 of the present invention. A substrate was used.

(Evaluation of substrates for liquid crystal display devices)
Observation and evaluation of the manufactured substrates for liquid crystal display devices of Examples 1 and 2 and Comparative Example 1 using a polarizing microscope were performed. First, in a state where the polarizing plate of the polarizing microscope was in a crossed Nicol state, observation was performed from the state aligned with the extinction axis of the liquid crystal display substrate until it was rotated by 10 °. Table 2 shows the evaluation results.

(Production of VA liquid crystal display device)
[Examples 3 and 4]
A transparent electrode film was formed by sputtering of ITO on a glass substrate provided with a liquid crystal display device substrate of Example 1 and a TFT layer serving as a counter substrate, and a polyimide alignment film was provided thereon. An epoxy resin sealant containing spacer particles is printed at a position corresponding to the outer frame of the black matrix provided around the pixel group of the color filter, and the liquid crystal display device substrate and the counter substrate of Example 1 are printed. Bonding was performed at a pressure of 10 kg / cm. Subsequently, it heat-processed at 150 degreeC for 90 minutes, the sealing agent was hardened, and the laminated body of two glass substrates was obtained. This glass substrate laminate was degassed under vacuum, then returned to atmospheric pressure, and liquid crystal was injected into the gap between the two glass substrates to obtain a liquid crystal cell. Polarizing plates HLC2-2518 made by Sanritz Co., Ltd. were attached to both surfaces of this liquid crystal cell. As a cold-cathode tube backlight for a color liquid crystal display device, a phosphor obtained by mixing BaMg ₂ Al ₁₆ O ₂₇ : Eu, Mn and LaPO ₄ : Ce, Tb at a mass ratio of 50:50 is green (G), Y ₂ O ₃ : Eu was red (R) and BaMgAl ₁₀ O ₁₇ : Eu was blue (B) to produce a white three-wavelength fluorescent lamp having an arbitrary color tone. A liquid crystal cell provided with the polarizing plate was placed on this backlight, and this was used as the liquid crystal display device of Example 3.
A liquid crystal display device produced in the same manner as in Example 3 using the liquid crystal display device substrate in Example 2 instead of the liquid crystal display device substrate in Example 1 was used as the liquid crystal display device in Example 4.

[Comparative Example 3]
A liquid crystal display device produced in the same manner as in Example 3 using the liquid crystal display device substrate in Comparative Example 1 instead of the liquid crystal display device substrate in Example 1 was used as the liquid crystal display device in Comparative Example 3.

(Evaluation of VA liquid crystal display device)
Table 3 shows the results of visual evaluation of light leakage during black display when no electricity was applied to the manufactured VA type liquid crystal display devices of Examples 3 and 4 and Comparative Example 3. Here, the smaller the light leakage in black display, the higher the contrast of the liquid crystal display device.

It is a schematic sectional drawing of an example of an orientation state when a liquid crystal layer is formed on an uneven | corrugated level | step difference. It is the figure which showed the example of the color filter substrate which has an uneven | corrugated level | step difference. It is a schematic sectional drawing of an example of the board | substrate for liquid crystal display devices formed by transcription | transfer. It is a schematic sectional drawing of an example of the board | substrate for liquid crystal display devices formed by polarized light irradiation. It is a schematic sectional drawing of an example of the board | substrate for liquid crystal display devices of this invention. It is a schematic sectional drawing of an example of the liquid crystal display device of this invention. It is a measurement result of the uneven | corrugated level | step difference using the laser microscope of the color filter board | substrate produced in the Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Concave and convex step 12 Liquid crystalline molecule 13 Poor alignment region 21 Transfer material 22 Liquid crystal display substrate 23 Temporary support 24 Substrate having concave and convex step 25 Optical anisotropic layer 26 Alignment layer 27 Transfer adhesive layer 28 Mechanical property layer 29 Polarized light Optically anisotropic layer forming layer 31 before irradiation Substrate 32 Color filter layer 32R Red color filter layer 32G Green color filter layer 32B Blue color filter layer 33 Black matrix 41 Transparent electrode layer 42 Alignment layer 43 Liquid crystal layer 44 TFT
45 Liquid crystal cell 46 Polarizing layer 47 Cellulose acetate film 48 Polarizing plate

Claims (5)

  A substrate for a liquid crystal display device having an optically anisotropic layer having a slow axis in an in-plane direction on a color filter substrate having an uneven step, wherein the slow phase in an arbitrary 10 μm diameter region of the optically anisotropic layer A substrate for a liquid crystal display device having a maximum axis deviation of 10 ° or less.   A liquid crystal display device comprising a pair of polarizing plates and a liquid crystal cell comprising the liquid crystal display device substrate according to claim 1 between the pair of polarizing plates.   3. The liquid crystal display device according to claim 2, wherein the alignment mode of the liquid crystal layer is a TN mode, a VA mode, an IPS mode, an FFS mode, or an OCB mode. A method for producing a substrate for a liquid crystal display device according to claim 1, comprising the following [1] and [2]:
[1] An optically anisotropic layer having a slow axis in the in-plane direction obtained by applying and drying a solution containing a liquid crystalline compound to form a liquid crystal phase and then irradiating the liquid crystal phase with heat or ionizing radiation; Providing a transfer material having a transfer adhesive layer;
[2] Laminating the transfer material on a color filter substrate having uneven steps, and forming the transfer adhesive layer and the optically anisotropic layer in this order on the color filter substrate. It is a manufacturing method of the board | substrate for liquid crystal display devices of Claim 1, Comprising: The manufacturing method containing the following [11]-[13] in this order:
[11] Providing an alignment layer on a color filter substrate having uneven steps;
[12] Forming a liquid crystal phase by applying and drying a solution containing a liquid crystal compound on the alignment layer;
[13] Forming an optically anisotropic layer having a slow axis in the in-plane direction by irradiating the liquid crystal phase with polarized ultraviolet rays.

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