KR102277348B1 - Polymer composition, and liquid crystal alignment film for horizontal electric field drive-mode liquid crystal display element - Google Patents

Abstract

An object of the present invention is to provide a transverse electric field drive type liquid crystal display element which is highly efficient, has orientation controllability, and is excellent in reliability such as burn-in characteristics and voltage retention. This invention is a photosensitive side chain type polymer|macromolecule which expresses liquid crystallinity in (A) predetermined temperature range, The lower limit of the temperature range which expresses liquid crystallinity is 150 degreeC or more, The upper limit is 200 degreeC or more, The said side chain The said subject is solved by the polymer composition containing a type|mold polymer|macromolecule and (B) organic solvent.

Description

POLYMER COMPOSITION, AND LIQUID CRYSTAL ALIGNMENT FILM FOR HORIZONTAL ELECTRIC FIELD DRIVE-MODE LIQUID CRYSTAL DISPLAY ELEMENT}

The present invention relates to a novel polymer composition, a liquid crystal aligning film for a transverse electric field drive type liquid crystal display element using the same, and a method for manufacturing a substrate having the alignment film. Further, the present invention relates to a novel method for manufacturing a liquid crystal display device having excellent burn-in characteristics and excellent reliability such as voltage retention.

BACKGROUND ART A liquid crystal display element is known as a light-weight, thin, and low-power display device, and in recent years it is used for a large-size television use, and has achieved remarkable development. A liquid crystal display element clamps a liquid crystal layer with a pair of transparent board|substrates provided with an electrode, and is comprised, for example. And in a liquid crystal display element, the organic film which consists of an organic material is used as a liquid crystal aligning film so that a liquid crystal may become a desired orientation state between board|substrates.

That is, a liquid crystal aligning film is provided in the surface in contact with the liquid crystal of the board|substrate which clamps a liquid crystal as a structural member of a liquid crystal display element, and is playing the role of orientating a liquid crystal in a fixed direction between the board|substrates. And in addition to the role of orientating a liquid crystal in fixed directions, such as a direction parallel to a board|substrate, the role of controlling the pretilt angle of a liquid crystal may be calculated|required by a liquid crystal aligning film, for example. The ability to control the orientation of a liquid crystal in such a liquid crystal aligning film (it is hereafter called orientation control ability.) is provided by orientation-processing with respect to the organic film which comprises a liquid crystal aligning film.

Conventionally, the rubbing method is known as an orientation processing method of the liquid crystal aligning film for providing orientation control ability. The rubbing method refers to rubbing (rubbing) the surface of an organic film such as polyvinyl alcohol, polyamide, or polyimide on a substrate with a cloth such as cotton, nylon, or polyester in a certain direction (rubbing direction), and rubbing direction (rubbing direction) A method of aligning liquid crystals with This rubbing method has been used in the conventional manufacturing process of a liquid crystal display element, since the alignment state of a relatively stable liquid crystal can be implement|achieved easily. And as an organic film used for a liquid crystal aligning film, the polyimide-type organic film excellent in reliability, such as heat resistance, and an electrical characteristic has been mainly selected.

However, as for the rubbing method which rubs the surface of the liquid crystal aligning film which consists of polyimide etc., generation|occurrence|production of dust generation or static electricity may become a problem. In addition, due to the recent increase in precision of liquid crystal display elements and irregularities caused by the electrodes on the corresponding substrates and switching active elements for driving liquid crystals, the surface of the liquid crystal aligning film cannot be uniformly rubbed with a cloth, and uniform liquid crystal alignment can be realized. There were cases where there was no

Then, as another orientation processing method of the liquid crystal aligning film which does not rub, the photo-alignment method is examined actively.

Although there are various methods in the photo-alignment method, anisotropy is formed in the organic film which comprises a liquid crystal aligning film by linearly polarized light or collimated light, and a liquid crystal is orientated according to the anisotropy.

As a main photo-alignment method, the decomposition-type photo-alignment method is known. For example, a polyimide film is irradiated with polarized ultraviolet light, and anisotropic decomposition is generated using the polarization direction dependence of the ultraviolet absorption of the molecular structure. And it is made to orientate a liquid crystal with the polyimide which remained without decomposition|disassembly (for example, refer patent document 1).

Moreover, the photo-alignment method of a photocrosslinking type|mold and a photoisomerization type is also known. For example, polyvinyl cinnamate is used, polarized ultraviolet light is irradiated, and a dimerization reaction (crosslinking reaction) is generated at the double bond portion of two side chains parallel to polarization. Then, the liquid crystal is aligned in a direction orthogonal to the polarization direction (for example, refer to Non-Patent Document 1). In addition, when a side chain polymer having azobenzene in the side chain is used, polarized ultraviolet light is irradiated, an isomerization reaction occurs in the azobenzene moiety of the side chain parallel to polarization, and the liquid crystal is oriented in a direction orthogonal to the polarization direction ( For example, refer to Non-Patent Document 2).

As in the above example, rubbing is not required in the orientation processing method of the liquid crystal aligning film by a photo-alignment method, and there is no possibility of generation|occurrence|production of dust and static electricity. And it can orientation-process also to the board|substrate of the liquid crystal display element with an unevenness|corrugation on the surface, and it becomes the orientation treatment method of the liquid crystal aligning film suitable for an industrial production process.

Japanese Patent Publication No. 3893659

M. Shadt et al., Jpn. J. Appl. Phys. 31, 2155 (1992). K. Ichimura et al., Chem. Rev. 100, 1847 (2000).

As mentioned above, the photo-alignment method does not require a rubbing process itself compared with the rubbing method conventionally used industrially as an orientation processing method of a liquid crystal display element, Therefore, it is equipped with a big advantage. And compared with the rubbing method in which orientation controllability becomes substantially constant by rubbing, by the photo-alignment method, the irradiation amount of the polarized light can be changed and orientation controllability can be controlled. However, in the photo-alignment method, when trying to realize the same degree of alignment control ability as in the case of the rubbing method, the irradiation amount of a large amount of polarized light may be required, and stable alignment of the liquid crystal may not be realized.

For example, in the decomposition-type photo-alignment method described in Patent Document 1 described above, it is necessary to irradiate the polyimide film with ultraviolet light from a high-pressure mercury lamp having an output of 500 W for 60 minutes. becomes necessary Moreover, also in the case of the photo-alignment method of a dimerization type|mold or a photoisomerization type|mold, the ultraviolet irradiation of a large amount of about several J (joules) - several tens of J may be required. Moreover, in the case of the photo-alignment method of a photocrosslinking type or a photoisomerization type, since the thermal stability and light stability of liquid crystal orientation were inferior, when it was set as a liquid crystal display element, there existed a problem that orientation defect and display burn-in generate|occur|produced. In particular, in a liquid crystal display device of a transverse electric field drive type, since liquid crystal molecules are switched in-plane, misalignment of the liquid crystal after liquid crystal drive occurs easily, and display burn-in resulting from AC drive is a major problem.

Therefore, in the photo-alignment method, high efficiency improvement of an orientation process and realization of the stable liquid-crystal orientation are calculated|required, and the liquid crystal aligning film and liquid crystal aligning agent which can provide high orientation control ability to a liquid crystal aligning film efficiently are calculated|required.

The present invention is a substrate having a liquid crystal aligning film for a transverse electric field driving type liquid crystal display element, which is highly efficient and imparted with orientation control ability, is excellent in burn-in characteristics, and is excellent in reliability such as voltage retention, and a transverse electric field driving type liquid crystal display having the substrate It aims to provide a device.

MEANS TO SOLVE THE PROBLEM The present inventors discovered the following invention, as a result of earnestly examining in order to achieve the said subject.

<1> (A) It is photosensitive side chain type polymer|macromolecule which expresses liquid crystal in a predetermined temperature range, Comprising: The said side chain type whose lower limit of the temperature range which expresses liquid crystallinity is 150 degreeC or more, and the upper limit is 200 degreeC or more polymer, and

(B) organic solvent

A polymer composition containing, in particular, a polymer composition for producing a liquid crystal aligning film for a transverse electric field driving type liquid crystal display device.

<2> (A) It is photosensitive side chain type polymer|macromolecule which expresses liquid crystal in a predetermined temperature range, Comprising: The said side chain type whose lower limit of the temperature range which expresses liquid crystallinity is 150 degreeC or more, and the upper limit is 220 degreeC or more polymer, and

(B) organic solvent

A polymer composition containing, in particular, a polymer composition for producing a liquid crystal aligning film for a transverse electric field driving type liquid crystal display device.

In <3> said <1> or <2>, it is good for (A) component to have a photosensitive side chain which raise|generates photocrosslinking, photoisomerization, or optical fleece transition.

In any one of <4> said <1>-<3>, it is good for (A) component to have any 1 type of photosensitive side chain chosen from the group which consists of following formula (1)-(6).

[Formula 1]

In the formula, A, B, and D are each independently a single bond, -O-, -CH ₂ -, -COO-, -OCO-, -CONH-, -NH-CO-, -CH=CH-CO- represents O-, or -O-CO-CH=CH-;

S is a C1-C12 alkylene group, and the hydrogen atom couple|bonded with them may be substituted by the halogen group;

T is a single bond or an alkylene group having 1 to 12 carbon atoms, and the hydrogen atom bonded thereto may be substituted with a halogen group;

Y ₁ represents a ring selected from a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, and an alicyclic hydrocarbon having 5 to 8 carbon atoms, or 2 to 6 identical or different selected from their substituents A ring is a group formed by bonding through a bonding group B, and the hydrogen atoms bonded thereto are each independently -COOR ₀ (wherein R ₀ represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms), -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, a C1-C5 alkyl group, or a C1-C5 alkyloxy group may be substituted;

Y ₂ is a group selected from the group consisting of a divalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, and combinations thereof, and a hydrogen atom bonded thereto may be each independently _{substituted with -NO 2} , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms;

R represents a hydroxyl group, an alkoxy group having 1 to 6 carbon atoms, or has the same definition as _{Y 1 ;}

X is a single bond, -COO-, -OCO-, -N=N-, -CH=CH-, -C≡C-, -CH=CH-CO-O-, or -O-CO-CH= When CH- is represented and the number of X becomes 2, X may be the same or different;

Cou represents a coumarin-6-yl group or a coumarin-7-yl group, and hydrogen atoms bonded thereto are each independently -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, It may be substituted with a halogen group, a C1-C5 alkyl group, or a C1-C5 alkyloxy group;

As for q1 and q2, one is 1 and the other is 0;

q3 is 0 or 1;

P and Q are each independently a group selected from the group consisting of a divalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, and combinations thereof; , when X is -CH=CH-CO-O-, -O-CO-CH=CH-, P or Q on the side to which -CH=CH- is bonded is an aromatic ring;

When the number of P becomes 2, P may be same or different;

When the number of Q becomes 2, Q may be same or different;

l1 is 0 or 1;

l2 is an integer of 0 to 2;

When l1 and l2 are both 0, when T is a single bond, A also represents a single bond;

When l1 is 1, when T is a single bond, B also represents a single bond;

H and I are each independently a group selected from a divalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, and combinations thereof.

In <5> said <4>, when the terminal of the photosensitive side chain of Formula (1)-(6) as (A) component is -COOH, the side chain is a monovalent|monohydric benzene ring, a naphthalene ring, ratio having two or more ring structures selected from a phenyl ring, a furan ring, a pyrrole ring, and an alicyclic hydrocarbon having 5 to 8 carbon atoms;

When the terminal of the side chain is other than -COOH, the side chain has a ring structure selected from a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, and an alicyclic hydrocarbon having 5 to 8 carbon atoms. Better to have 3 or more.

In any one of <6> said <1>-<3>, it is good for (A) component to have any 1 type of photosensitive side chain chosen from the group which consists of following formula (7)-(10).

wherein A, B, D, Y ₁ , X, Y ₂ , and R have the same definitions as above;

l represents an integer of 1 to 12;

m represents an integer of 0 to 2, m1, m2 represents an integer of 1 to 3;

n represents an integer of 0 to 12 (provided that when n = 0, B is a single bond).

[Formula 2]

In any one of <7> said <1>-<3>, it is good for (A) component to have any 1 type of photosensitive side chain chosen from the group which consists of following formula (11)-(13).

In the formula, A, X, l, m, m1 and R have the same definitions as above.

[Formula 3]

In any one of <8> said <1> - <3>, it is good for (A) component to have a photosensitive side chain represented by following formula (14) or (15).

In the formula, A, Y ₁ , l, m1 and m2 have the same definitions as above.

[Formula 4]

In any one of <9> said <1> - <3>, it is good for (A) component to have a photosensitive side chain represented by following formula (16) or (17).

In the formula, A, X, l and m have the same definitions as above.

[Formula 5]

<10> In any one of said <1> - <3>, it is good for (A) component to have a photosensitive side chain represented by following formula (18) or (19).

In the formula, A, B, Y ₁ , q1, q2, m1, and m2 have the same definitions as above.

R ₁ represents a hydrogen atom, -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms. .

[Formula 6]

<11> In any one of said <1> - <3>, it is good for (A) component to have a photosensitive side chain represented by following formula (20).

In the formula, A, Y ₁ , X, l and m have the same definitions as above.

[Formula 7]

In any one of <12> said <1>-<11>, it is good for (A) component to have any 1 type of liquid crystalline side chain chosen from the group which consists of following formula (21)-(31) .

wherein A and B have the same definitions as above;

Y ₃ is a group selected from the group consisting of a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a nitrogen-containing heterocyclic ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, and combinations thereof, and is bonded to them Each hydrogen atom to be used may be independently _{substituted with -NO 2} , -CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms;

R ₃ is a hydrogen atom, -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, nitrogen-containing a heterocyclic ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, an alkyl group having 1 to 12 carbon atoms, or an alkoxy group having 1 to 12 carbon atoms;

As for q1 and q2, one is 1 and the other is 0;

l represents an integer of 1 to 12, m represents an integer of 0 to 2, with the proviso that in formulas (23) to (24), the sum of all m is 2 or more, and formulas (25) to (26) In , the sum of all m is 1 or more, and m1, m2 and m3 each independently represent an integer of 1 to 3;

R ₂ is a hydrogen atom, —NO ₂ , —CN, a halogen group, a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a nitrogen-containing heterocyclic ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, and an alkyl group , or an alkyloxy group;

Z ₁ , Z ₂ represents a single bond, -CO-, -CH ₂ O-, -CH=N-, -CF ₂ -.

[Formula 8]

<13> process of applying the composition in any one of said <1>-<12> on the board|substrate which has an electrically conductive film for transverse electric field drive, and forming a coating film;

[II] a step of irradiating the coating film obtained in [I] with polarized ultraviolet rays; and

[III] A step of heating the coating film obtained in [II];

The manufacturing method of the board|substrate which has the said liquid crystal aligning film which obtains the liquid crystal aligning film for transverse electric field drive type liquid crystal display elements to which orientation control ability was provided by having.

<14> The board|substrate which has the liquid crystal aligning film for lateral electric field drive type liquid crystal display elements manufactured by the method of said <13>.

A transverse electric field drive type liquid crystal display element which has the board|substrate of <15> said <14>.

<16> Step of preparing the substrate (first substrate) of <14> above;

[I'] on the second substrate

(A) a photosensitive side chain polymer expressing liquid crystallinity in a predetermined temperature range, wherein the lower limit of the temperature range expressing liquid crystallinity is 150 ° C. or higher, and the upper limit is 200 ° C. or higher, the side chain polymer, and

(B) organic solvent

A process of forming a coating film by applying a polymer composition containing;

[II'] A step of irradiating the coating film obtained in [I'] with polarized ultraviolet rays; and

[III'] A step of heating the coating film obtained in [II'];

The process of obtaining the 2nd board|substrate which has the liquid crystal aligning film which obtains the liquid crystal aligning film to which orientation control ability was provided by having; And

[IV] The process of opposingly arrange|positioning a 1st and 2nd board|substrate so that the liquid crystal aligning film of a 1st and 2nd board|substrate may correspond through a liquid crystal, and obtaining a liquid crystal display element;

The manufacturing method of the liquid crystal display element which obtains a transverse electric field drive type liquid crystal display element by having.

<17> Step of preparing the substrate (first substrate) of <14> above;

[I'] on the second substrate

(A) a photosensitive side chain polymer expressing liquid crystallinity in a predetermined temperature range, wherein the lower limit of the temperature range expressing liquid crystallinity is 150 ° C. or higher, and the upper limit is 220 ° C. or higher, the side chain polymer, and

(B) organic solvent

A process of forming a coating film by applying a polymer composition containing;

[II'] A step of irradiating the coating film obtained in [I'] with polarized ultraviolet rays; and

[III'] A step of heating the coating film obtained in [II'];

The process of obtaining the 2nd board|substrate which has the liquid crystal aligning film which obtains the liquid crystal aligning film to which orientation control ability was provided by having; And

[IV] The process of opposingly arrange|positioning a 1st and 2nd board|substrate so that the liquid crystal aligning film of a 1st and 2nd board|substrate may oppose through a liquid crystal, and obtaining a liquid crystal display element;

The manufacturing method of the liquid crystal display element which obtains a transverse electric field drive type liquid crystal display element by having.

<18> Transverse electric field driving type liquid crystal display device manufactured according to <16> or <17>.

According to the present invention, a substrate having a liquid crystal aligning film for a transverse electric field driving type liquid crystal display element, which is highly efficient in orientation controllability, is excellent in burn-in characteristics, and is excellent in reliability such as voltage retention, and a transverse electric field driving type liquid crystal having the substrate A display element can be provided.

Since the lateral electric field drive type liquid crystal display element manufactured by the method of this invention is highly efficient and orientation control ability is provided, even if it drives continuously for a long time, a display characteristic is not impaired.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure of one example demonstrating typically the anisotropy introduction|transduction process in the manufacturing method of the liquid crystal aligning film used for this invention, a crosslinkable organic group is used for a photosensitive side chain, and introduce|transduced anisotropy is small. It is a drawing of the case.
It is a figure of one example demonstrating typically the anisotropy introduction|transduction process in the manufacturing method of the liquid crystal aligning film used for this invention, a crosslinkable organic group is used for a photosensitive side chain, and the introduce|transduced anisotropy is large. It is a drawing of the case.
3 : is a figure of one example explaining typically the anisotropic introduction|transduction process in the manufacturing method of the liquid crystal aligning film used for this invention, The organic group which raise|generates a fleece transition or isomerization in a photosensitive side chain is used, and introduce|transduced It is a diagram in the case of small anisotropy.
4 : is a figure of one example explaining typically the anisotropic introduction|transduction process in the manufacturing method of the liquid crystal aligning film used for this invention, The organic group which raise|generates a fleece transition or isomerization in a photosensitive side chain is used, and introduce|transduced It is a diagram in the case of large anisotropy.

MEANS TO SOLVE THE PROBLEM As a result of earnestly researching, this inventor came to complete this invention by obtaining the following knowledge.

The polymer composition used in the production method of the present invention has a lower limit of 150°C or higher and an upper limit of 220°C or higher that can express liquid crystallinity in a photosensitive side chain polymer (hereinafter also simply referred to as a side chain polymer). ), and the coating film obtained using the said polymer composition is a film|membrane which has photosensitive side chain type polymer|macromolecule which can express liquid crystallinity. It orientation-processes by polarized light irradiation, without giving a rubbing process to this coating film. And it becomes a coating film (henceforth a liquid crystal aligning film) to which orientation control ability was provided through the process of heating the side chain type polymer film after polarized light irradiation. At this time, the small anisotropy expressed by polarized light irradiation becomes a driving force, and liquid crystalline side chain type polymer|macromolecule itself reorient|orients efficiently by self-organization. As a result, as a liquid crystal aligning film, highly efficient orientation processing is implement|achieved, and the liquid crystal aligning film to which high orientation control ability was provided can be obtained. Moreover, since the heating after polarized light irradiation can be performed at high temperature 150 degreeC or more, the liquid crystal aligning film excellent in reliability, such as voltage retention, can be obtained.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail.

<The manufacturing method of the board|substrate which has a liquid crystal aligning film> and <The manufacturing method of a liquid crystal display element>

The manufacturing method of the board|substrate which has a liquid crystal aligning film of this invention,

[I] (A) It is a photosensitive side chain type polymer|macromolecule which expresses liquid crystallinity in a predetermined temperature range, The lower limit of the temperature range which expresses liquid crystallinity is 150 degreeC or more, The upper limit is 200 degreeC or more, The said side chain type polymer, and

(B) organic solvent

A step of forming a coating film by applying a polymer composition containing

[II] a step of irradiating the coating film obtained in [I] with polarized ultraviolet rays; and

[III] A step of heating the coating film obtained in [II];

has

According to the said process, the liquid crystal aligning film for transverse electric field drive type liquid crystal display elements to which orientation control ability was provided can be obtained, and the board|substrate which has this liquid crystal aligning film can be obtained.

Moreover, a transverse electric field drive type liquid crystal display element can be obtained by preparing a 2nd board|substrate other than the board|substrate (1st board|substrate) obtained above.

For the second substrate, the above steps [I] to [III] (conductive film for transverse electric field drive) except that a substrate not having a transverse electric field drive film is used instead of a substrate having a transverse electric field drive conductive film In order to use the board|substrate which does not have, for convenience, in this application, by using the process [I'] - [III']), the 2nd board|substrate which has a liquid crystal aligning film to which the orientation control ability was provided can be obtained by using have.

A method for manufacturing a transverse electric field driving type liquid crystal display device,

[IV] Process of opposingly arrange|positioning the 1st and 2nd board|substrate obtained above so that the liquid crystal aligning film of a 1st and 2nd board|substrate may oppose through a liquid crystal, and obtaining a liquid crystal display element;

has Thereby, a transverse electric field driving type liquid crystal display element can be obtained.

Hereinafter, each process of [I]-[III] and [IV] which the manufacturing method of this invention has is demonstrated.

<Process [I]>

In process [I], the polymer composition containing the photosensitive side chain type polymer|macromolecule and organic solvent which expresses liquid crystal in a predetermined temperature range is apply|coated on the board|substrate which has the electrically conductive film for lateral electric field drive, and a coating film is formed.

<substrate>

Although it does not specifically limit about a board|substrate, When the liquid crystal display element manufactured is a transmissive type, it is preferable that a board|substrate with high transparency is used. In that case, it does not specifically limit, A glass substrate, or plastic substrates, such as an acrylic substrate and a polycarbonate substrate, etc. can be used.

Moreover, in consideration of application to a reflection type liquid crystal display element, opaque substrates, such as a silicon wafer, can also be used.

<Conductive film for lateral electric field drive>

The substrate has a conductive film for driving a lateral electric field.

Examples of the conductive film include, but are not limited to, ITO (Indium Tin Oxide: Indium Tin Oxide), IZO (Indium Zinc Oxide: Indium Zinc Oxide), and the like when the liquid crystal display element is a transmissive film.

Moreover, in the case of a reflective liquid crystal display element, although the material etc. which reflect light, such as aluminum, are mentioned as a conductive film, it is not limited to these.

A conventionally well-known method can be used for the method of forming an electrically conductive film on a board|substrate.

<Polymer composition>

A polymer composition is apply|coated on the board|substrate which has the electrically conductive film for lateral electric field drive, especially on the electrically conductive film.

The polymer composition used in the production method of the present invention is (A) a photosensitive side chain type polymer that expresses liquid crystallinity in a predetermined temperature range, and the lower limit of the temperature range that expresses liquid crystallinity is 150° C. or more, The upper limit is 200 degreeC or more said side chain type polymer|macromolecule; and (B) organic solvent; It contains.

<<(A) side chain type polymer>>

(A) component is photosensitive side chain type polymer|macromolecule which expresses liquid crystallinity in a predetermined temperature range, The lower limit of the temperature range which expresses liquid crystallinity is 150 degreeC or more, The upper limit is 200 degreeC or more, The said side chain type It is a polymer. Or (A) component is a photosensitive side chain type polymer|macromolecule which expresses liquid crystallinity in a predetermined temperature range, The lower limit of the temperature range which expresses liquid crystallinity is 150 degreeC or more, The upper limit is 220 degreeC or more, the said side It is a chain polymer. Preferably, the component (A) is a photosensitive side chain polymer that expresses liquid crystallinity in a predetermined temperature range, the lower limit of the temperature range expressing liquid crystallinity is 160 ° C. or higher, and the upper limit is 220 ° C. or higher, the above It is a side chain type polymer.

(A) It is good that side chain type polymer|macromolecule reacts with the light of the wavelength range of 250 nm - 400 nm, and shows liquid crystallinity in the temperature range of 150 degreeC - 300 degreeC.

(A) It is preferable that side chain type polymer|macromolecule has a photosensitive side chain which reacts with the light of the wavelength range of 250 nm - 400 nm.

(A) In order that side chain type polymer|macromolecule may show liquid crystallinity in the temperature range of 150 degreeC - 300 degreeC, it is preferable to have a mesogenic group.

(A) As for the photosensitive side chain type polymer|macromolecule of a component, the lower limit of the temperature range which expresses liquid crystallinity becomes like this. Preferably it is 155 degreeC or more, More preferably, it is 160 degreeC or more, and of the temperature range which expresses liquid crystallinity. An upper limit becomes like this. Preferably it is 200 degreeC or more, More preferably, it is 220 degreeC or more, More preferably, it is 250 degreeC or more, This upper limit may exceed 300 degreeC.

In the present invention, as described above, the photosensitive polymer of component (A) expresses liquid crystallinity in a temperature range having a lower limit of 150 ° C or higher and an upper limit of 200 ° C or higher, but such a polymer is It is more preferable that it is a structure which has two or more ring structures in a chain|strand. Alternatively, in the present invention, as described above, the photosensitive polymer of component (A) expresses liquid crystallinity in a temperature range having a lower limit of 150 ° C or higher and an upper limit of 220 ° C or higher, but such a polymer is It is more preferable that it is a structure which has two or more ring structures in a side chain.

(A) The side chain which has photosensitivity has couple|bonded with the principal chain, and (A) side chain type polymer|macromolecule can raise|generate a crosslinking reaction, an isomerization reaction, or an optical Fris dislocation in response to light. Although the structure of the side chain which has photosensitivity is not specifically limited, The structure which responds to light and raise|generates a crosslinking reaction or an optical Fries dislocation is preferable, and it is more preferable to raise a crosslinking reaction. In this case, even when exposed to external stress such as heat, the realized orientation control ability can be stably maintained for a long period of time. Although the structure of the photosensitive side chain type polymer|macromolecule which can express liquid crystallinity will not be specifically limited if such a characteristic is satisfy|filled, It is preferable to have a rigid mesogenic component in a side chain structure. In this case, when the side chain type polymer|macromolecule is used as a liquid crystal aligning film, stable liquid-crystal orientation can be obtained.

The polymer structure has, for example, a main chain and a side chain bonded thereto, and the side chain is a mesogen component such as a biphenyl group, a terphenyl group, a phenylcyclohexyl group, a phenylbenzoate group, and an azobenzene group; , has a structure having a photosensitive group that reacts with light and undergoes a crosslinking reaction or isomerization reaction bonded to the tip portion, a main chain and a side chain bonded thereto, the side chain also serves as a mesogenic component, and also an optical Fris rearrangement reaction It can be set as a structure having a phenylbenzoate group.

More specific examples of the structure of the photosensitive side chain polymer capable of expressing liquid crystallinity include hydrocarbon, (meth)acrylate, itaconate, fumarate, maleate, α-methylene-γ-butyrolactone, styrene , a main chain composed of at least one selected from the group consisting of radically polymerizable groups such as vinyl, maleimide, norbornene, and siloxane, and a side chain composed of at least one of the following formulas (1) to (6) It is preferable that it is a structure.

[Formula 9]

In the formula, A, B, and D are each independently a single bond, -O-, -CH ₂ -, -COO-, -OCO-, -CONH-, -NH-CO-, -CH=CH-CO- represents O-, or -O-CO-CH=CH-;

S is a C1-C12 alkylene group, and the hydrogen atom couple|bonded with them may be substituted by the halogen group;

T is a single bond or an alkylene group having 1 to 12 carbon atoms, and the hydrogen atom bonded thereto may be substituted with a halogen group;

Y ₁ represents a ring selected from a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, and an alicyclic hydrocarbon having 5 to 8 carbon atoms, or 2 to 6 identical or different selected from their substituents A ring is a group formed by bonding through a bonding group B, and the hydrogen atoms bonded thereto are each independently -COOR ₀ (wherein R ₀ represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms), -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, a C1-C5 alkyl group, or a C1-C5 alkyloxy group may be substituted;

Y ₂ is a group selected from the group consisting of a divalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, and combinations thereof, and a hydrogen atom bonded thereto may be each independently _{substituted with -NO 2} , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms;

R represents a hydroxyl group, an alkoxy group having 1 to 6 carbon atoms, or has the same definition as _{Y 1 ;}

X is a single bond, -COO-, -OCO-, -N=N-, -CH=CH-, -C≡C-, -CH=CH-CO-O-, or -O-CO-CH= When CH- is represented and the number of X becomes 2, X may be the same or different;

Cou represents a coumarin-6-yl group or a coumarin-7-yl group, and hydrogen atoms bonded thereto are each independently -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, It may be substituted with a halogen group, a C1-C5 alkyl group, or a C1-C5 alkyloxy group;

As for q1 and q2, one is 1 and the other is 0;

q3 is 0 or 1;

P and Q are each independently a group selected from the group consisting of a divalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, and combinations thereof; , when X is -CH=CH-CO-O-, -O-CO-CH=CH-, P or Q on the side to which -CH=CH- is bonded is an aromatic ring;

When the number of P becomes 2, P may be same or different;

When the number of Q becomes 2, Q may be same or different;

l1 is 0 or 1;

l2 is an integer of 0 to 2;

When l1 and l2 are both 0, when T is a single bond, A also represents a single bond;

When l1 is 1, when T is a single bond, B also represents a single bond;

H and I are each independently a group selected from a divalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, and combinations thereof.

According to a more preferable aspect of this invention, when the terminal of the photosensitive side chain of said Formula (1)-(6) is -COOH, the side chain is a monovalent|monohydric benzene ring, a naphthalene ring, a biphenyl ring, a furan ring , a pyrrole ring and two or more ring structures selected from an alicyclic hydrocarbon having 5 to 8 carbon atoms, and when the terminal of the side chain is other than -COOH, the side chain is a monovalent benzene ring, a naphthalene ring, It is preferable to have 3 or more ring structures selected from a phenyl ring, a furan ring, a pyrrole ring, and a C5-C8 alicyclic hydrocarbon.

Here, the terminal of the photosensitive side chain of Formulas (1)-(6) means, for example, Y1 group in the case of the side chains of Formulas (1), (3), (5), and (6), "terminal is -COOH" means that the ring selectable for the Y1 group has a substituent -COOH at any position. Moreover, in the case of the side chain of Formula (2), R group is said, and "the terminal is -COOH" means that R group selects a hydroxyl group.

It is good that a side chain is any 1 type of photosensitive side chain chosen from the group which consists of following formula (7) - (10).

wherein A, B, D, Y ₁ , X, Y ₂ , and R have the same definitions as above;

l represents an integer of 1 to 12;

m represents an integer of 0 to 2, m1, m2 represents an integer of 1 to 3;

n represents an integer of 0 to 12 (provided that when n = 0, B is a single bond).

[Formula 10]

It is good that a side chain is any 1 type of photosensitive side chain chosen from the group which consists of following formula (11)-(13).

In the formula, A, X, l, m, m1 and R have the same definitions as above.

[Formula 11]

It is good that a side chain is a photosensitive side chain represented by following formula (14) or (15).

In the formula, A, Y ₁ , l, m1 and m2 have the same definitions as above.

[Formula 12]

It is good that a side chain is a photosensitive side chain represented by following formula (16) or (17).

In the formula, A, X, l and m have the same definitions as above.

[Formula 13]

Moreover, it is good that a side chain is a photosensitive side chain represented by following formula (18) or (19).

In the formula, A, B, Y ₁ , q1, q2, m1, and m2 have the same definitions as above.

R ₁ represents a hydrogen atom, -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms. .

[Formula 14]

It is good that a side chain is a photosensitive side chain represented by following formula (20).

In the formula, A, Y ₁ , X, l and m have the same definitions as above.

[Formula 15]

Moreover, it is good for (A) side chain type polymer|macromolecule to have any 1 type of liquid crystalline side chain chosen from the group which consists of following formula (21)-(31).

wherein A and B have the same definitions as above;

Y ₃ is a group selected from the group consisting of a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a nitrogen-containing heterocyclic ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, and combinations thereof, and is bonded to them Each hydrogen atom to be used may be independently _{substituted with -NO 2} , -CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms;

R ₃ is a hydrogen atom, -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, nitrogen-containing a heterocyclic ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, an alkyl group having 1 to 12 carbon atoms, or an alkoxy group having 1 to 12 carbon atoms;

As for q1 and q2, one is 1 and the other is 0;

l represents an integer of 1 to 12, m represents an integer of 0 to 2, with the proviso that in formulas (23) to (24), the sum of all m is 2 or more, and formulas (25) to (26) In , the sum of all m is 1 or more, and m1, m2 and m3 each independently represent an integer of 1 to 3;

R ₂ is a hydrogen atom, —NO ₂ , —CN, a halogen group, a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a nitrogen-containing heterocyclic ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, and an alkyl group , or an alkyloxy group;

Z ₁ , Z ₂ represents a single bond, -CO-, -CH ₂ O-, -CH=N-, -CF ₂ -.

[Formula 16]

<<The manufacturing method of photosensitive side chain type polymer|macromolecule>>

The photosensitive side chain type polymer|macromolecule which can express said liquid crystal property can be obtained by superposing|polymerizing the photoreactive side chain monomer and liquid crystalline side chain monomer which have said photosensitive side chain.

[Photoreactive side chain monomer]

A photoreactive side chain monomer is a monomer which can form the polymer|macromolecule which has a photosensitive side chain in the side chain site|part of a polymer|macromolecule, when polymer|macromolecule is formed.

As a photoreactive group which a side chain has, the following structure and its derivative(s) are preferable.

[Formula 17]

More specific examples of the photoreactive side chain monomer include hydrocarbon, (meth)acrylate, itaconate, fumarate, maleate, α-methylene-γ-butyrolactone, styrene, vinyl, maleimide, norbornene, etc. A photosensitive side chain comprising at least one polymerizable group selected from the group consisting of a radical polymerizable group and siloxane, and at least one selected from the above formulas (1) to (6), preferably, for example, the formula ( The photosensitive side chain which consists of at least 1 type of 7)-(10), the photosensitive side chain which consists of at least 1 type of said Formula (11)-(13), the photosensitive side chain represented by said Formula (14) or (15), It is preferable that it is a structure which has the photosensitive side chain represented by the photosensitive side chain represented by said Formula (16) or (17), the photosensitive side chain represented by said Formula (18) or (19), and said Formula (20).

This application is a photoreactive and/or liquid crystalline side chain monomer, It is novel compound (1) - (11) represented by the following formulas (1) - (11); And it is represented by the following formulas (12) - (17) Compounds (12) to (17) are provided.

In the formula, R represents a hydrogen atom or a methyl group; S represents an alkylene group having 2 to 10 carbon atoms; R ¹⁰ represents Br or CN; S represents an alkylene group having 2 to 10 carbon atoms; u is 0 or 1 represents; and Py represents a 2-pyridyl group, a 3-pyridyl group or a 4-pyridyl group. In addition, v represents 1 or 2.

[Formula 18]

[Formula 19]

[Formula 20]

[Liquid crystalline side chain monomer]

A liquid crystalline side chain monomer is a monomer which polymer|macromolecule derived from the monomer expresses liquid crystallinity, and the polymer can form a mesogenic group in a side chain site|part.

As a mesogenic group which a side chain has, it may contribute to become a mesogenic structure independently, such as biphenyl and phenyl benzoate, and may also contribute to become a mesogenic structure by hydrogen bonding of side chains like benzoic acid. As a mesogenic group which a side chain has, the following structure is preferable.

[Formula 21]

More specific examples of the liquid crystalline side chain monomer include hydrocarbon, (meth)acrylate, itaconate, fumarate, maleate, α-methylene-γ-butyrolactone, styrene, vinyl, maleimide, norbornene, etc. It is preferable that it is a structure which has a polymeric group comprised by at least 1 sort(s) chosen from the group which consists of a radical polymerizable group and siloxane, and a side chain which consists of at least 1 sort(s) in said Formula (21)-(31).

(A) Side chain type polymer|macromolecule can be obtained by the polymerization reaction of the photoreactive side chain monomer which expresses the above-mentioned liquid crystallinity. Moreover, it can obtain by the copolymerization of the photoreactive side chain monomer which does not express liquid crystallinity, and a liquid crystalline side chain monomer, or the copolymerization of the photoreactive side chain monomer which expresses liquid crystallinity, and a liquid crystalline side chain monomer. Moreover, it can copolymerize with other monomers in the range which does not impair liquid crystalline expression ability.

Examples of the other monomer include an industrially available monomer capable of a radical polymerization reaction.

Specific examples of the other monomer include unsaturated carboxylic acid, acrylic acid ester compound, methacrylic acid ester compound, maleimide compound, acrylonitrile, maleic anhydride, styrene compound, and vinyl compound.

Specific examples of the unsaturated carboxylic acid include acrylic acid, methacrylic acid, itaconic acid, maleic acid, and fumaric acid.

Examples of the acrylic acid ester compound include methyl acrylate, ethyl acrylate, isopropyl acrylate, benzyl acrylate, naphthyl acrylate, anthryl acrylate, anthryl methyl acrylate, phenyl acrylate, 2,2 ,2-trifluoroethyl acrylate, tert-butyl acrylate, cyclohexyl acrylate, isobornyl acrylate, 2-methoxyethyl acrylate, methoxytriethylene glycol acrylate, 2-ethoxyethyl acrylate , tetrahydrofurfuryl acrylate, 3-methoxybutyl acrylate, 2-methyl-2-adamantyl acrylate, 2-propyl-2-adamantyl acrylate, 8-methyl-8-tricyclodecyl acrylic and 8-ethyl-8-tricyclodecyl acrylate.

As a methacrylic acid ester compound, For example, methyl methacrylate, ethyl methacrylate, isopropyl methacrylate, benzyl methacrylate, naphthyl methacrylate, anthryl methacrylate, anthryl methyl methacrylate rate, phenyl methacrylate, 2,2,2-trifluoroethyl methacrylate, tert-butyl methacrylate, cyclohexyl methacrylate, isobornyl methacrylate, 2-methoxyethyl methacrylate, Methoxytriethylene glycol methacrylate, 2-ethoxyethyl methacrylate, tetrahydrofurfuryl methacrylate, 3-methoxybutyl methacrylate, 2-methyl-2-adamantyl methacrylate, 2- and propyl-2-adamantyl methacrylate, 8-methyl-8-tricyclodecyl methacrylate, and 8-ethyl-8-tricyclodecyl methacrylate. Cyclic ethers such as glycidyl (meth) acrylate, (3-methyl-3-oxetanyl) methyl (meth) acrylate, and (3-ethyl-3-oxetanyl) methyl (meth) acrylate A (meth)acrylate compound having a group can also be used.

Examples of the vinyl compound include vinyl ether, methyl vinyl ether, benzyl vinyl ether, 2-hydroxyethyl vinyl ether, phenyl vinyl ether, and propyl vinyl ether.

As a styrene compound, styrene, methylstyrene, chlorostyrene, bromostyrene, etc. are mentioned, for example.

As a maleimide compound, maleimide, N-methyl maleimide, N-phenyl maleimide, N-cyclohexyl maleimide, etc. are mentioned, for example.

It does not specifically limit about the manufacturing method of side chain type polymer|macromolecule of this embodiment, The general-purpose method handled industrially can be used. Specifically, it can manufacture by cationic polymerization using the vinyl group of a liquid crystalline side chain monomer or a photoreactive side chain monomer, radical polymerization, and anionic polymerization. Among these, radical polymerization is particularly preferable from the viewpoint of easiness of reaction control and the like.

As the polymerization initiator for radical polymerization, a known compound such as a radical polymerization initiator or a reversible addition-cleavage chain transfer (RAFT) polymerization reagent can be used.

A radical thermal polymerization initiator is a compound which generate|occur|produces a radical by heating more than decomposition temperature. As such a radical thermal polymerization initiator, for example, ketone peroxides (methyl ethyl ketone peroxide, cyclohexanone peroxide, etc.), diacyl peroxides (acetyl peroxide, benzoyl peroxide, etc.), hydroperoxides (hydrogen peroxide, tert-butyl hydroperoxide, cumene hydroperoxide, etc.), dialkyl peroxides (di-tert-butyl peroxide, dicumyl peroxide, dilauroyl peroxide, etc.), peroxyketals (dibutyl peroxycyclohexane, etc.), alkyl peresters (peroxyneodecanoic acid-tert-butyl ester, peroxypivalic acid-tert-butyl ester, peroxy2-ethylcyclohexanoic acid-tert-amyl ester, etc.), and sulfates (potassium persulfate, sodium persulfate, ammonium persulfate, etc.), azo compounds (azobisisobutyronitrile, 2,2'-di(2-hydroxyethyl) azobisisobutyronitrile, etc.) can be heard Such a radical thermal polymerization initiator may be used individually by 1 type, or may be used in combination of 2 or more type.

A radical photoinitiator will not be specifically limited if it is a compound which starts radical polymerization by light irradiation. Examples of such a radical photopolymerization initiator include benzophenone, Michler ketone, 4,4'-bis(diethylamino)benzophenone, xanthone, thioxanthone, isopropylxanthone, 2,4-diethylthioxanthone, 2- Ethylanthraquinone, acetophenone, 2-hydroxy-2-methylpropiophenone, 2-hydroxy-2-methyl-4'-isopropylpropiophenone, 1-hydroxycyclohexylphenylketone, isopropylbenzoin Ether, isobutylbenzoin ether, 2,2-diethoxyacetophenone, 2,2-dimethoxy-2-phenylacetophenone, camphorquinone, benzanthrone, 2-methyl-1-[4-(methylthio) Phenyl]-2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone-1,4-dimethylaminobenzoate ethyl, 4-dimethylamino Isoamyl benzoate, 4,4'-di(t-butylperoxycarbonyl)benzophenone, 3,4,4'-tri(t-butylperoxycarbonyl)benzophenone, 2,4,6-trimethyl Benzoyldiphenylphosphine oxide, 2-(4'-methoxystyryl)-4,6-bis(trichloromethyl)-s-triazine, 2-(3',4'-dimethoxystyryl)- 4,6-bis(trichloromethyl)-s-triazine, 2-(2',4'-dimethoxystyryl)-4,6-bis(trichloromethyl)-s-triazine, 2-( 2'-Methoxystyryl)-4,6-bis(trichloromethyl)-s-triazine, 2-(4'-pentyloxystyryl)-4,6-bis(trichloromethyl)-s- Triazine, 4-[pN,N-di(ethoxycarbonylmethyl)]-2,6-di(trichloromethyl)-s-triazine, 1,3-bis(trichloromethyl)-5-( 2'-chlorophenyl)-s-triazine, 1,3-bis(trichloromethyl)-5-(4'-methoxyphenyl)-s-triazine, 2-(p-dimethylaminostyryl)benz Oxazole, 2-(p-dimethylaminostyryl)benzthiazole, 2-mercaptobenzothiazole, 3,3'-carbonylbis(7-diethylaminocoumarin), 2-(o-chlorophenyl) -4,4',5,5'-tetraphenyl-1,2'-biimidazole, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetrakis (4 -Ethoxycarbonylphenyl)-1,2'-biimidazole, 2,2'-bis(2,4-dichlorophenyl)-4,4',5,5'-tetraphenyl-1,2'- Biimidazole, 2,2'bis(2,4-dibromophenyl)-4,4', 5,5'-tetraphenyl-1,2'-biimidazole, 2,2'-bis(2,4,6-trichlorophenyl)-4,4',5,5'-tetraphenyl-1, 2'-biimidazole, 3-(2-methyl-2-dimethylaminopropionyl)carbazole, 3,6-bis(2-methyl-2-morpholinopropionyl)-9-n-dodecylcar Bazole, 1-hydroxycyclohexylphenyl ketone, bis(5-2,4-cyclopentadien-1-yl)-bis(2,6-difluoro-3-(1H-pyrrol-1-yl)- phenyl) titanium, 3,3',4,4'-tetra(t-butylperoxycarbonyl)benzophenone, 3,3',4,4'-tetra(t-hexylperoxycarbonyl)benzophenone, 3,3'-di(methoxycarbonyl)-4,4'-di(t-butylperoxycarbonyl)benzophenone, 3,4'-di(methoxycarbonyl)-4,3'-di (t-butylperoxycarbonyl)benzophenone, 4,4'-di(methoxycarbonyl)-3,3'-di(t-butylperoxycarbonyl)benzophenone, 2-(3-methyl- 3H-Benzothiazol-2-ylidene)-1-naphthalen-2-yl-ethanone, or 2-(3-methyl-1,3-benzothiazol-2(3H)-ylidene)-1- (2-benzoyl)ethanone etc. are mentioned. These compounds may be used independently and may be used in mixture of 2 or more.

The radical polymerization method is not particularly limited, and an emulsion polymerization method, a suspension polymerization method, a dispersion polymerization method, a precipitation polymerization method, a bulk polymerization method, a solution polymerization method, and the like can be used.

It will not specifically limit, if the produced|generated polymer|macromolecule melt|dissolves as an organic solvent used for the polymerization reaction of the photosensitive side chain type polymer|macromolecule which can express liquid crystallinity. The specific example is given below.

N,N-dimethylformamide, N,N-dimethylacetamide, N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, N-methylcaprolactam, dimethylsulfoxide, tetramethylurea, Pyridine, dimethyl sulfone, hexamethyl sulfoxide, γ-butyrolactone, isopropyl alcohol, methoxymethylpentanol, dipentene, ethyl amyl ketone, methyl nonyl ketone, methyl ethyl ketone, methyl isoamyl ketone, methyl isopropyl Ketone, methyl cellosolve, ethyl cellosolve, methyl cellosolve acetate, ethyl cellosolve acetate, butyl carbitol, ethyl carbitol, ethylene glycol, ethylene glycol monoacetate, ethylene glycol monoisopropyl ether, ethylene glycol mono Butyl ether, propylene glycol, propylene glycol monoacetate, propylene glycol monomethyl ether, propylene glycol-tert-butyl ether, dipropylene glycol monomethyl ether, diethylene glycol, diethylene glycol monoacetate, diethylene glycol dimethyl ether, dipropylene Glycol monoacetate monomethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monoacetate monoethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monoacetate monopropyl ether, 3-methyl- 3-methoxybutyl acetate, tripropylene glycol methyl ether, 3-methyl-3-methoxybutanol, diisopropyl ether, ethyl isobutyl ether, diisobutylene, amyl acetate, butyl butyrate, butyl ether, diisobutyl Ketone, methylcyclohexene, propyl ether, dihexyl ether, dioxane, n-hexane, n-pentane, n-octane, diethyl ether, cyclohexanone, ethylene carbonate, propylene carbonate, methyl lactate, ethyl lactate, methyl acetate , ethyl acetate, n-butyl acetate, propylene glycol monoethyl ether, methyl pyruvate, ethyl pyruvate, methyl 3-methoxypropionate, methyl ethyl 3-ethoxypropionate, ethyl 3-methoxypropionate, 3-ethoxypropionic acid, 3-methoxypropionic acid, 3-methoxypropionic acid propyl, 3-methoxybutylpropionate, diglyme, 4-hydroxy-4-methyl-2-pentanone, 3-methoxy-N,N-dimethylpropanamide, 3-ethoxy-N,N-dimethylpropanamide, 3-butoxy-N,N-dimethylpropana Mead etc. are mentioned.

These organic solvents may be used independently and may be mixed and used. Moreover, even if it is a solvent which does not dissolve the produced|generated polymer|macromolecule, you may use it, mixing with the organic solvent mentioned above in the range in which the produced|generated polymer does not precipitate.

Moreover, in radical polymerization, since oxygen in an organic solvent becomes a cause of inhibiting a polymerization reaction, it is preferable to use the organic solvent degassed to the extent possible.

Although the polymerization temperature at the time of radical polymerization can select the arbitrary temperature of 30 degreeC - 150 degreeC, Preferably it is the range of 50 degreeC - 100 degreeC. In addition, although the reaction can be carried out at any concentration, if the concentration is too low, it becomes difficult to obtain a high molecular weight polymer, and if the concentration is too high, the viscosity of the reaction solution becomes too high and uniform stirring becomes difficult. The concentration is preferably 1% by mass to 50% by mass, and more preferably 5% by mass to 30% by mass. The reaction initial stage can be performed at high concentration, and an organic solvent can be added after that.

In the radical polymerization reaction described above, when the ratio of the radical polymerization initiator is large with respect to the monomer, the molecular weight of the obtained polymer becomes small, and when it is small, the molecular weight of the obtained polymer becomes large, so the ratio of the radical initiator is 0.1 with respect to the monomer to be polymerized. It is preferable that they are mol% - 10 mol%. In addition, at the time of polymerization, various monomer components, a solvent, an initiator, etc. can also be added.

[Recovery of polymer]

What is necessary is just to inject|throw-in the reaction solution to a poor solvent and to precipitate these polymers, when collect|recovering the produced|generated polymer|macromolecule from the reaction solution of the photosensitive side chain type polymer|macromolecule which was obtained by the reaction mentioned above and can express liquid crystallinity . Examples of poor solvents used for precipitation include methanol, acetone, hexane, heptane, butyl cellosolve, heptane, methyl ethyl ketone, methyl isobutyl ketone, ethanol, toluene, benzene, diethyl ether, methyl ethyl ether, and water. can be heard The polymer charged and precipitated in the poor solvent can be collected by filtration, and then dried under normal pressure or reduced pressure at room temperature or by heating. Moreover, when the polymer which carried out precipitation collection|recovery is made to dissolve again in an organic solvent, and operation which carries out reprecipitation collection|recovery is repeated 2 to 10 times, the impurity in a polymer can be reduced. Examples of the poor solvent at this time include alcohols, ketones, and hydrocarbons, and the use of three or more types of poor solvents selected from these is preferable because the efficiency of purification further increases.

The molecular weight of the (A) side chain polymer of the present invention is the weight average molecular weight measured by the GPC (Gel Permeation Chromatography) method when the strength of the obtained coating film, workability at the time of coating film formation, and the uniformity of the coating film are considered. , 2000-1000000 are preferable, More preferably, it is 5000-20000.

[Preparation of polymer composition]

It is preferable that the polymer composition used for this invention is prepared as a coating liquid so that it may become suitable for formation of a liquid crystal aligning film. That is, it is preferable that the polymer composition used for this invention is prepared as a solution in which the resin component for forming a resin film was melt|dissolved in the organic solvent. Here, the resin component is a resin component containing the photosensitive side chain type polymer|macromolecule which can express the liquid crystal demonstrated previously. In that case, as for content of a resin component, 1 mass % - 20 mass % are preferable, More preferably, they are 3 mass % - 15 mass %, Especially preferably, they are 3 mass % - 10 mass %.

The polymer composition of this embodiment WHEREIN: Although the photosensitive side chain type polymer|macromolecule which all can express the liquid crystallinity mentioned above may be sufficient as the resin component mentioned above, in the range which does not impair liquid-crystal expression ability and photosensitive performance, other than them of other polymers may be mixed. In that case, content of the other polymer in a resin component is 0.5 mass % - 80 mass %, Preferably they are 1 mass % - 50 mass %.

The polymer etc. which are not the photosensitive side chain type polymer|macromolecule which consist of poly(meth)acrylate, a polyamic acid, a polyimide, etc., and can express liquid crystallinity are mentioned, for example as for such another polymer.

<<(B) organic solvent>>

The organic solvent used for the polymer composition used for this invention will not be specifically limited if it is an organic solvent in which a resin component is dissolved. The specific example is given below.

N,N-dimethylformamide, N,N-dimethylacetamide, N-methyl-2-pyrrolidone, N-methylcaprolactam, 2-pyrrolidone, N-ethylpyrrolidone, N-vinylpyrrolidone Don, dimethylsulfoxide, tetramethylurea, pyridine, dimethylsulfone, hexamethylsulfoxide, γ-butyrolactone, 3-methoxy-N,N-dimethylpropanamide, 3-ethoxy-N,N-dimethylpropane Amide, 3-butoxy-N,N-dimethylpropanamide, 1,3-dimethyl-imidazolidinone, ethyl amyl ketone, methyl nonyl ketone, methyl ethyl ketone, methyl isoamyl ketone, methyl isopropyl ketone, cyclo Hexanone, ethylene carbonate, propylene carbonate, diglyme, 4-hydroxy-4-methyl-2-pentanone, propylene glycol monoacetate, propylene glycol monomethyl ether, propylene glycol-tert-butyl ether, dipropylene glycol monomethyl Ether, diethylene glycol, diethylene glycol monoacetate, diethylene glycol dimethyl ether, dipropylene glycol monoacetate monomethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monoacetate monoethyl ether, Dipropylene glycol monopropyl ether, dipropylene glycol monoacetate monopropyl ether, 3-methyl-3-methoxybutyl acetate, tripropylene glycol methyl ether, etc. are mentioned. These may be used independently and may be mixed and used.

The polymer composition used for this invention may contain components other than said (A), (B), and (C) component. Although the solvent and compound which improve the film-thickness uniformity and surface smoothness at the time of apply|coating a polymer composition as the example, the compound etc. which improve the adhesiveness of a liquid crystal aligning film and a board|substrate are mentioned, It is not limited to this.

The following are mentioned as a specific example of the solvent (poor solvent) which improves the uniformity of a film thickness and surface smoothness.

For example, isopropyl alcohol, methoxymethylpentanol, methyl cellosolve, ethyl cellosolve, butyl cellosolve, methyl cellosolve acetate, ethyl cellosolve acetate, butyl carbitol, ethyl carbitol, ethyl Carbitol acetate, ethylene glycol, ethylene glycol monoacetate, ethylene glycol monoisopropyl ether, ethylene glycol monobutyl ether, propylene glycol, propylene glycol monoacetate, propylene glycol monomethyl ether, propylene glycol-tert-butyl ether, dipropylene glycol Monomethyl ether, diethylene glycol, diethylene glycol monoacetate, diethylene glycol dimethyl ether, dipropylene glycol monoacetate monomethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monoacetate monoethyl Ether, dipropylene glycol monopropyl ether, dipropylene glycol monoacetate monopropyl ether, 3-methyl-3-methoxybutyl acetate, tripropylene glycol methyl ether, 3-methyl-3-methoxybutanol, diisopropyl ether, Ethyl isobutyl ether, diisobutylene, amyl acetate, butyl butyrate, butyl ether, diisobutyl ketone, methylcyclohexene, propyl ether, dihexyl ether, 1-hexanol, n-hexane, n-pentane, n- Octane, diethyl ether, methyl lactate, ethyl lactate, methyl acetate, ethyl acetate, n-butyl acetate, propylene glycol monoethyl ether acetate, methyl pyruvate, ethyl pyruvate, 3-methoxymethyl propionate, 3-ethoxy methyl ethyl propionate , 3-methoxyethyl propionate, 3-ethoxypropionic acid, 3-methoxypropionic acid, 3-methoxypropionic acid propyl, 3-methoxybutyl propionate, 1-methoxy-2-propanol, 1-ethoxy-2- Propanol, 1-butoxy-2-propanol, 1-phenoxy-2-propanol, propylene glycol monoacetate, propylene glycol diacetate, propylene glycol-1-monomethyl ether-2-acetate, propylene glycol-1-monoethyl Low levels of ether-2-acetate, dipropylene glycol, 2-(2-ethoxypropoxy)propanol, lactic acid methyl ester, lactic acid ethyl ester, lactic acid n-propyl ester, lactic acid n-butyl ester, lactic acid isoamyl ester, etc. Solvents with surface tension, etc. can be heard

The number of these poor solvents may be one, and they may mix and use multiple types. When using the solvent as mentioned above, it is preferable that it is 5 mass % - 80 mass % of the whole solvent so that the solubility of the whole solvent contained in a polymer composition may not be reduced remarkably, More preferably, 20 They are mass % - 60 mass %.

As a compound which improves the uniformity of a film thickness and surface smoothness, a fluorochemical surfactant, silicone type surfactant, nonionic surfactant, etc. are mentioned.

More specifically, for example, FTOP (registered trademark) 301, EF303, EF352 (manufactured by Tochem Products), Megapack (registered trademark) F171, F173, R-30 (manufactured by DIC), Fluorad FC430, FC431 (manufactured by Sumitomo 3M Corporation), Asahi Guard (registered trademark) AG710 (manufactured by Asahi Glass Corporation), Sufflon (registered trademark) S-382, SC101, SC102, SC103, SC104, SC105, SC106 (manufactured by AGC Semi Chemical) ) and the like. To [ the usage ratio of these surfactant / 100 mass parts of resin components contained in a polymer composition ], Preferably they are 0.01 mass part - 2 mass parts, More preferably, they are 0.01 mass part - 1 mass part.

As a specific example of the compound which improves the adhesiveness of a liquid crystal aligning film and a board|substrate, the functional silane containing compound etc. which are shown next are mentioned.

For example, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 2-aminopropyltrimethoxysilane, 2-aminopropyltriethoxysilane, N-(2-aminoethyl)-3 -Aminopropyltrimethoxysilane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane, 3-ureapropyltrimethoxysilane, 3-ureidepropyltriethoxysilane, N-ethoxy Carbonyl-3-aminopropyltrimethoxysilane, N-ethoxycarbonyl-3-aminopropyltriethoxysilane, N-triethoxysilylpropyltriethylenetriamine, N-trimethoxysilylpropyltriethylenetri Amine, 10-trimethoxysilyl-1,4,7-triazadecane, 10-triethoxysilyl-1,4,7-triazadecane, 9-trimethoxysilyl-3,6-diazanonyl Acetate, 9-triethoxysilyl-3,6-diazanonylacetate, N-benzyl-3-aminopropyltrimethoxysilane, N-benzyl-3-aminopropyltriethoxysilane, N-phenyl-3- Aminopropyltrimethoxysilane, N-phenyl-3-aminopropyltriethoxysilane, N-bis(oxyethylene)-3-aminopropyltrimethoxysilane, N-bis(oxyethylene)-3-aminopropyltri Ethoxysilane etc. are mentioned.

Moreover, in addition to the improvement of the adhesiveness of a board|substrate and a liquid crystal aligning film, for the purpose of preventing the fall of the electrical property by the backlight when a liquid crystal display element is comprised, etc., the additive of the following phenoplast type and an epoxy group containing compound is a polymer composition You may contain it in. Although a specific phenoplast type additive is shown below, it is not limited to this structure.

[Formula 22]

Specific examples of the epoxy group-containing compound include ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, tripropylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, neo Pentyl glycol diglycidyl ether, 1,6-hexanediol diglycidyl ether, glycerin diglycidyl ether, 2,2-dibromoneopentyl glycol diglycidyl ether, 1,3,5,6 -tetraglycidyl-2,4-hexanediol, N,N,N',N',-tetraglycidyl-m-xylenediamine, 1,3-bis(N,N-diglycidylamino methyl)cyclohexane, N,N,N',N',-tetraglycidyl-4,4'-diaminodiphenylmethane, and the like are exemplified.

When using the compound which improves adhesiveness with a board|substrate, it is preferable that the usage-amount is 0.1 mass part - 30 mass parts with respect to 100 mass parts of the resin component contained in a polymer composition, More preferably, 1 mass part - 20 mass parts is the mass part. When the usage-amount is less than 0.1 mass part, the effect of an adhesive improvement cannot be anticipated, and when it increases more than 30 mass parts, the orientation of a liquid crystal may worsen.

As an additive, a photosensitizer can also be used. Colorless sensitizers and triplet sensitizers are preferred.

Examples of the photosensitizer include aromatic nitro compounds, coumarin (7-diethylamino-4-methylcoumarin, 7-hydroxy4-methylcoumarin), ketocoumarin, carbonylbiscoumarin, aromatic 2-hydroxyketone, and amino Substituted, aromatic 2-hydroxyketone (2-hydroxybenzophenone, mono- or di-p-(dimethylamino)-2-hydroxybenzophenone), acetophenone, anthraquinone, xanthone, thioxanthone, benzan Tron, thiazoline (2-benzoylmethylene-3-methyl-β-naphthothiazoline, 2-(β-naphthoylmethylene)-3-methylbenzothiazoline, 2-(α-naphthoylmethylene)-3-methyl Benzothiazoline, 2-(4-biphenoylmethylene)-3-methylbenzothiazoline, 2-(β-naphthoylmethylene)-3-methyl-β-naphthothiazoline, 2-(4-biphenoylmethylene) -3-methyl-β-naphthothiazoline, 2-(p-fluorobenzoylmethylene)-3-methyl-β-naphthothiazoline), oxazoline (2-benzoylmethylene-3-methyl-β-naphthooxa) Zoline, 2-(β-naphthoylmethylene)-3-methylbenzoxazoline, 2-(α-naphthoylmethylene)-3-methylbenzoxazoline, 2-(4-biphenoylmethylene)-3-methylbenzo Oxazoline, 2-(β-naphthoylmethylene)-3-methyl-β-naphthooxazoline, 2-(4-biphenoylmethylene)-3-methyl-β-naphthooxazoline, 2-(p- Fluorobenzoylmethylene)-3-methyl-β-naphthooxazoline), benzothiazole, nitroaniline (m- or p-nitroaniline, 2,4,6-trinitroaniline) or nitroacenaphthene (5-nitroacenaphthene) ), (2-[(m-hydroxy-p-methoxy) styryl] benzothiazole, benzoin alkyl ether, N-alkylated phthalone, acetophenone ketal (2,2-dimethoxyphenyl ethanone), naphthalene, anthracene (2-naphthalenemethanol, 2-naphthalenecarboxylic acid, 9-anthracenemethanol, and 9-anthracenecarboxylic acid), benzopyran, azoindolidine, merocumarin, and the like.

Preferred are aromatic 2-hydroxyketone (benzophenone), coumarin, ketocoumarin, carbonylbiscoumarin, acetophenone, anthraquinone, xanthone, thioxanthone, and acetophenoneketal.

In the polymer composition, if it is the range in which the effect of this invention is not impaired other than what was mentioned above, for the purpose of changing electrical properties, such as dielectric constant and electroconductivity of a liquid crystal aligning film, when it is set as a dielectric material and an electrically-conductive substance, and also a liquid crystal aligning film You may add a crosslinking|crosslinked compound for the purpose of raising the hardness and density of the film|membrane.

The method of apply|coating the above-mentioned polymer composition on the board|substrate which has the electrically conductive film for lateral electric field drive is not specifically limited.

As for the coating method, industrially, the method of performing by screen printing, offset printing, flexographic printing, the inkjet method, etc. is common. As another coating method, there exist a dip method, the roll coater method, the slit coater method, the spinner method (rotary coating method), the spray method, etc., You may use these according to the objective.

After the polymer composition is applied on the substrate having a conductive film for driving a transverse electric field, it is 50 to 200° C., preferably 50 to 150° C. by a heating means such as a hot plate, a heat circulation type oven, or an IR (infrared) type oven. A coating film can be obtained by evaporating the solvent at °C. It is preferable that the drying temperature at this time is lower than the liquid crystal phase expression temperature of side chain type polymer|macromolecule.

When the thickness of the coating film is too thick, it is disadvantageous in terms of power consumption of the liquid crystal display element, and when it is too thin, the reliability of the liquid crystal display element may decrease, so preferably 5 nm to 300 nm, more preferably 10 nm to 150 nm.

Moreover, it is also possible to provide the process of cooling the board|substrate on which the coating film was formed to room temperature after the [I] process before the subsequent [II] process.

<Process [II]>

In process [II], the polarized ultraviolet-ray is irradiated to the coating film obtained by process [I]. When irradiating the polarized ultraviolet-ray to the film surface of a coating film, the ultraviolet-ray which polarized through a polarizing plate from a fixed direction with respect to a board|substrate is irradiated. As the ultraviolet ray to be used, an ultraviolet ray having a wavelength of 100 nm to 400 nm can be used. Preferably, an optimal wavelength is selected through a filter etc. according to the kind of coating film to be used. And, for example, in order to selectively cause a photocrosslinking reaction, an ultraviolet ray having a wavelength of 290 nm to 400 nm may be selected and used. As the ultraviolet, for example, light emitted from a high-pressure mercury lamp can be used.

The irradiation amount of the polarized ultraviolet rays depends on the coating film to be used. The irradiation amount is the amount of polarized ultraviolet light that achieves the maximum value of ΔA (hereinafter also referred to as ΔAmax), which is the difference between the ultraviolet absorbance in the direction parallel to the polarization direction of the polarized ultraviolet light and the ultraviolet absorbance in the perpendicular direction in the coating film. It is preferable to set it as within the range of 1 % - 70 % of , and it is more preferable to set it within the range of 1 % - 50 %.

<Process [III]>

In process [III], the coating film to which the ultraviolet-ray polarized in process [II] was irradiated is heated. By heating, orientation control ability can be provided to a coating film.

Heating can use heating means, such as a hot plate, a heat circulation type oven, or an IR (infrared) type|mold oven. The heating temperature can be determined in consideration of the temperature at which the liquid crystallinity of the coating film to be used is expressed.

It is preferable that heating temperature exists in the temperature range of the temperature (henceforth liquid-crystal expression temperature) at which side chain type polymer|macromolecule expresses liquid crystallinity. In the case of the surface of a thin film like a coating film, it is anticipated that the liquid crystal expression temperature of the surface of a coating film is lower than the liquid crystal expression temperature at the time of observing the photosensitive side chain type polymer|macromolecule which can express liquid crystal in bulk. For this reason, as for heating temperature, it is more preferable to exist in the temperature range of the liquid-crystal expression temperature of the coating-film surface. That is, the temperature range of the heating temperature after irradiation with polarized ultraviolet light is a temperature 10 ° C lower than the lower limit of the temperature range of the liquid crystal expression temperature of the chain polymer to be used, and the upper limit is a temperature 10 ° C lower than the upper limit of the liquid crystal temperature range. It is preferable that it is a temperature in the range made into When the heating temperature is lower than the above temperature range, the effect of amplifying the anisotropy by heat in the coating film tends to be insufficient, and when the heating temperature is too high than the above temperature range, the coating film state is in an isotropic liquid state ( isotropic), and in this case, it may be difficult to reorient in one direction due to self-organization.

In addition, the liquid crystal expression temperature is above the glass transition temperature (Tg) at which the side chain polymer or coating film surface undergoes a phase transition from the solid phase to the liquid crystal phase, and isotropic phase transition causing the phase transition from the liquid crystal phase to the isotropic phase (isotropic phase) Temperature (Tiso) refers to the temperature below the temperature.

The thickness of the coating film formed after heating is preferably 5 nm to 300 nm, more preferably 50 nm to 150 nm for the same reason described in step [I].

By having the above process, in the manufacturing method of this invention, highly efficient and anisotropic introduction to a coating film can be implement|achieved. And the board|substrate with a liquid crystal aligning film can be manufactured with high efficiency. Moreover, since reorientation can be performed at high temperature 150 degreeC or more, the board|substrate with liquid crystal aligning film excellent in reliability, such as voltage retention, can be manufactured.

<Process [IV]>

[IV] The process has a board|substrate (1st board|substrate) which has a liquid crystal aligning film on the electrically conductive film for transverse electric field drive obtained by [III], and the electrically conductive film obtained by said [I'] - [III'] similarly. A liquid crystal cell is prepared by a known method by arranging a substrate (second substrate) with a liquid crystal aligning film, which is not present, to face each other through a liquid crystal so that both liquid crystal aligning films face each other, and a transverse electric field driving type liquid crystal display device is manufactured. It is fair. Further, in the steps [I'] to [III'], in the step [I], instead of the substrate having the conductive film for driving the lateral electric field, a substrate without the conductive film for driving the lateral electric field was used, except that the substrate was used in the process [ It can carry out similarly to I]-[III]. Since the only difference between the steps [I] to [III] and the steps [I'] to [III'] is the presence or absence of the above-described conductive film, the description of the steps [I'] to [III'] is omitted.

To give an example of manufacturing a liquid crystal cell or a liquid crystal display element, the above-mentioned first and second substrates are prepared, a spacer is dispersed on the liquid crystal aligning film of one side of the substrate, the liquid crystal aligning film surface is inside, and another After bonding the one side board|substrate, the method of injecting a liquid crystal under reduced pressure and sealing, or the method of sealing a board|substrate, after dripping a liquid crystal to the liquid crystal aligning film surface which disperse|distributed the spacer, etc. can be exemplified. In this case, it is preferable to use a substrate having an electrode having a structure similar to that of a comb for lateral electric field driving as the substrate on one side. The diameter of the spacer at this time is preferably 1 µm to 30 µm, and more preferably 2 µm to 10 µm. The spacer diameter determines the distance between the pair of substrates that sandwich the liquid crystal layer, that is, the thickness of the liquid crystal layer.

After the manufacturing method of the board|substrate with a coating film of this invention apply|coats a polymer composition on a board|substrate and forms a coating film, it irradiates the ultraviolet-ray which polarized. Next, by heating, highly efficient anisotropic introduction to a side chain type polymer film is implement|achieved, and the board|substrate with a liquid crystal aligning film provided with the orientation control ability of a liquid crystal is manufactured.

In the coating film used for this invention, highly efficient anisotropic introduction to a coating film is implement|achieved using the principle of molecular reorientation caused by the self-organization based on the photoreaction of a side chain and liquid crystallinity. In the production method of the present invention, in the case of a structure having a photocrosslinkable group as a photoreactive group in the side chain polymer, a coating film is formed on the substrate using the side chain polymer, then irradiated with polarized ultraviolet rays, After heating, a liquid crystal display element is manufactured.

Hereinafter, embodiment using side chain type polymer|macromolecule of the structure which has group which raise|generates an optical Fries rearrangement group or isomerization as a 1st form and photoreactive group for embodiment using side chain type polymer|macromolecule of the structure which has a photocrosslinkable group as a photoreactive group will be described as a second form.

BRIEF DESCRIPTION OF THE DRAWINGS In the 1st aspect in this invention, the anisotropic introduction process in the manufacturing method of the liquid crystal aligning film using the side chain type polymer|macromolecule of the structure which has a photocrosslinkable group as a photoreactive group is demonstrated typically It is one example drawing. Fig. 1 (a) is a diagram schematically showing the state of the side chain polymer film before polarized light irradiation, and Fig. 1 (b) is a diagram schematically showing the state of the side chain polymer film after polarized light irradiation, Fig. 1 (c) is a figure which shows typically the state of the side chain type polymer film after heating, and especially when introduce|transduced anisotropy is small, ie, in the 1st aspect of this invention, WHEREIN: In the 1st aspect of this invention, the ultraviolet irradiation amount of [II] process is ΔA It is a schematic diagram in the case of being in the range of 1% - 15% of the ultraviolet irradiation amount which maximizes.

2 is a 1st aspect in this invention. WHEREIN: The anisotropic introduction process in the manufacturing method of the liquid crystal aligning film using the side chain type polymer|macromolecule of the structure which has a photocrosslinkable group as a photoreactive group is demonstrated typically It is one example drawing. Fig.2 (a) is a figure which shows typically the state of the side chain type polymer film before polarized light irradiation, Fig.2 (b) is a figure which shows typically the state of the side chain type polymer film|membrane after polarized light irradiation, FIG. (c) is a figure which shows typically the state of the side chain type polymer film after heating, and especially when introduce|transduced anisotropy is large, ie, in the 1st aspect of this invention, WHEREIN: The ultraviolet irradiation amount of [II] process is ΔA It is a schematic diagram in the case of being in the range of 15% - 70% of the ultraviolet irradiation amount which maximizes.

3 is a liquid crystal aligning film using side chain type polymer|macromolecule of the structure which has an optical Fries potential group which is a photoisomerism group as a photoreactive group, or is represented by Formula (18) mentioned above as a photoreactive group in the 2nd aspect in this invention. It is a figure of one example which schematically demonstrates the anisotropic introduction|transduction process in the manufacturing method. Fig. 3 (a) is a diagram schematically showing the state of the side chain polymer film before polarized light irradiation, and Fig. 3 (b) is a diagram schematically showing the state of the side chain polymer film after polarized light irradiation, Fig. 3 (c) is a figure which shows typically the state of the side chain type polymer film after heating, especially when the introduced anisotropy is small, ie, in the 2nd aspect of this invention, WHEREIN: The ultraviolet irradiation amount of the [II] process is ΔA It is a schematic diagram in the case of being in the range of 1% - 70% of the ultraviolet irradiation amount which maximizes.

4 : in the 2nd aspect in this invention. WHEREIN: In the manufacturing method of the liquid crystal aligning film using the side chain type polymer|macromolecule of the structure which has an optical Fries potential group represented by Formula (19) mentioned above as a photoreactive group. It is a figure of one example which schematically demonstrates the anisotropic introduction|transduction process of . Fig.4 (a) is a figure which shows typically the state of the side chain type polymer film before polarized light irradiation, Fig.4 (b) is a figure which shows typically the state of the side chain type polymer film after polarized light irradiation, Fig. 4 (c) is a figure which shows typically the state of the side chain type polymer film after heating, and especially when the introduced anisotropy is large, ie, in the 2nd aspect of this invention, WHEREIN: The ultraviolet irradiation amount of the [II] process is ΔA It is a schematic diagram in the case of being in the range of 1% - 70% of the ultraviolet irradiation amount which maximizes.

In the first aspect of the present invention, in the anisotropic introduction treatment to the coating film, when the ultraviolet irradiation amount in step [II] is within the range of 1% to 15% of the ultraviolet irradiation amount that maximizes ΔA, first A coating film 1 is formed on the substrate. As shown to Fig.1 (a), in the coating film 1 formed on the board|substrate, it has the structure which the side chain 2 arranges at random. According to the random arrangement|sequence of the side chain 2 of the coating film 1, the mesogenic component of the side chain 2 and the photosensitive group are orientating at random, and the coating film 1 is isotropic.

In the first aspect of the present invention, in the anisotropic introduction treatment to the coating film, when the ultraviolet irradiation amount in step [II] is within the range of 15% to 70% of the ultraviolet irradiation amount for maximizing ΔA, first , a coating film 3 is formed on the substrate. As shown to Fig.2 (a), in the coating film 3 formed on the board|substrate, it has the structure which the side chain 4 arranges at random. According to the random arrangement|sequence of the side chain 4 of the coating film 3, the mesogenic component of the side chain 4 and the photosensitive group are orientating at random, and the coating film 2 is isotropic.

2nd aspect in this invention WHEREIN: By anisotropic introduction|transduction process to a coating film, it is a photoisomerism group, or the side chain type polymer|macromolecule of the structure which is represented by Formula (18) mentioned above and has an optical Fries potential group was used. When a liquid crystal aligning film is used WHEREIN: When the ultraviolet irradiation amount of a [II] process exists in 1% - 70% of the range of the ultraviolet irradiation amount which maximizes (DELTA)A, the coating film 5 is formed on a board|substrate first. As shown to Fig.3 (a), in the coating film 5 formed on the board|substrate, it has the structure which the side chain 6 arranges at random. According to the random arrangement of the side chain 6 of the coating film 5, the mesogenic component and the photosensitive group of the side chain 6 are orientating at random, and the side chain type polymer film 5 is isotropic.

2nd aspect in this invention WHEREIN: When using the liquid crystal aligning film using the side chain type polymer|macromolecule of the structure which has an optical Fries potential group represented by Formula (19) mentioned above as an anisotropic introduction process to a coating film, WHEREIN: When the ultraviolet irradiation amount of the [II] process is in the range of 1% - 70% of the ultraviolet irradiation amount which maximizes ΔA, first, the coating film 7 is formed on the substrate. As shown to Fig.4 (a), in the coating film 7 formed on the board|substrate, it has the structure which the side chain 8 arranges at random. According to the random arrangement|sequence of the side chain 8 of the coating film 7, the mesogenic component and the photosensitive group of the side chain 8 are orientating at random, and the coating film 7 is isotropic.

In the first embodiment of the present embodiment, when the ultraviolet irradiation amount in step [II] is within the range of 1% to 15% of the ultraviolet irradiation amount that maximizes ΔA, the polarized light is applied to the isotropic coating film 1 irradiate with ultraviolet light Then, as shown in FIG. 1(b), the photosensitive group of the side chain 2a having a photosensitive group among the side chains 2 arranged in a direction parallel to the polarization direction of ultraviolet rays preferentially undergoes a photoreaction such as a dimerization reaction. causes As a result, the density of the side chain 2a which performed photoreaction becomes slightly high in the polarization direction of an irradiation ultraviolet-ray, and very small anisotropy is provided to the coating film 1 as a result.

In the first embodiment of the present embodiment, when the ultraviolet irradiation amount in step [II] is within the range of 15% to 70% of the ultraviolet irradiation amount for maximizing ΔA, polarized light is applied to the isotropic coating film 3 irradiate with ultraviolet light Then, as shown in Fig. 2(b), the photosensitive group of the side chain 4a having a photosensitive group among the side chains 4 arranged in a direction parallel to the polarization direction of ultraviolet rays preferentially undergoes a photoreaction such as a dimerization reaction. causes As a result, the density of the side chain 4a which carried out the photoreaction becomes high in the polarization direction of an irradiation ultraviolet-ray, and small anisotropy is provided to the coating film 3 as a result.

In the 2nd aspect of this embodiment, it is a photoisomerism group, or the ultraviolet irradiation amount of a [II] process using the liquid crystal aligning film using the side chain type polymer|macromolecule of the structure which has an optical Fries potential group represented by Formula (18) mentioned above. When it exists in the range of 1% - 70% of the ultraviolet-ray irradiation amount which maximizes this (DELTA)A WHEREIN: With respect to this isotropic coating film 5, the ultraviolet-ray which polarized is irradiated. Then, as shown in Fig. 3(b), the photosensitive group of the side chain 6a having a photosensitive group among the side chains 6 arranged in a direction parallel to the polarization direction of ultraviolet rays preferentially undergoes a photoreaction such as an optical Fleece dislocation. causes As a result, the density of the side chain 6a which carried out the photoreaction becomes slightly high in the polarization direction of an irradiation ultraviolet-ray, and very small anisotropy is provided to the coating film 5 as a result.

In the 2nd aspect of this embodiment, the ultraviolet irradiation amount of the [II] process maximizes (DELTA)A using the coating film using the side chain type polymer|macromolecule of the structure which has an optical Fries potential group, which is represented by Formula (19) mentioned above and has an optical Fries potential group. When it exists in the range of 1% - 70% of the ultraviolet irradiation amount to do WHEREIN: The ultraviolet-ray which polarized with respect to this isotropic coating film 7 is irradiated. Then, as shown in Fig. 4(b), the photosensitive group of the side chain 8a having a photosensitive group among the side chains 8 arranged in a direction parallel to the polarization direction of ultraviolet rays preferentially undergoes a photoreaction such as an optical Fleece dislocation. causes As a result, the density of the side chain 8a which carried out the photoreaction becomes high in the polarization direction of an irradiation ultraviolet-ray, and small anisotropy is provided to the coating film 7 as a result.

Next, in the first embodiment of the present embodiment, when the ultraviolet irradiation amount in the step [II] is within the range of 1% to 15% of the ultraviolet irradiation amount that maximizes ΔA, the coating film 1 after polarized light irradiation is heated, , in a liquid crystal state. Then, as shown in FIG.1(c), in the coating film 1, the quantity of the crosslinking reaction which generate|occur|produced differs between the direction parallel to the polarization direction of an irradiation ultraviolet-ray, and a direction perpendicular|vertical. In this case, since the amount of the crosslinking reaction generated in the direction parallel to the polarization direction of the irradiation ultraviolet light is very small, this crosslinking reaction site functions as a plasticizer. Therefore, the liquid crystallinity of the polarization direction of an irradiation ultraviolet-ray and the perpendicular|vertical direction becomes higher than the liquid crystallinity of a parallel direction, the side chain 2 containing a mesogenic component is reoriented by self-organizing in the direction parallel to the polarization direction of an irradiation ultraviolet-ray. . As a result, the very small anisotropy of the coating film 1 caused by the photocrosslinking reaction is amplified by heat, and greater anisotropy is imparted to the coating film 1 .

Similarly, in the first embodiment of the present embodiment, when the ultraviolet irradiation amount in the step [II] is within the range of 15% to 70% of the ultraviolet irradiation amount for maximizing ΔA, the coating film 3 after polarized light irradiation is heated, , in a liquid crystal state. Then, as shown to FIG.2(c), in the side chain type polymer film 3, the quantity of the crosslinking reaction which generate|occur|produced differs between the direction parallel to the polarization direction of an irradiation ultraviolet-ray, and the perpendicular|vertical direction. Therefore, it self-organizes in the direction parallel to the polarization direction of an irradiation ultraviolet-ray, and the side chain 4 containing a mesogenic component is reorientated. As a result, the small anisotropy of the coating film 3 caused by the photocrosslinking reaction is amplified by heat, and greater anisotropy is imparted to the coating film 3 .

Similarly, in the 2nd aspect of this embodiment, it is a photoisomerism group, or it is an ultraviolet-ray of [II] process using the coating film using the side chain type polymer|macromolecule of the structure which is represented by Formula (18) mentioned above and has an optical Fries potential group. When irradiation amount exists in the range of 1% - 70% of the ultraviolet irradiation amount which maximizes (DELTA)A, the coating film 5 after polarized light irradiation is heated and it is set as a liquid-crystal state. Then, as shown in FIG.3(c), in the coating film 5, the quantity of the optical Fries dislocation reaction which generate|occur|produced differs between the direction parallel to the polarization direction of an irradiation ultraviolet-ray, and a direction perpendicular|vertical. In this case, since the liquid crystal orientation force of the optical fleece potential body generated in the direction perpendicular to the polarization direction of the irradiated ultraviolet ray is stronger than the liquid crystal orientation force of the side chain before the reaction, it self-organizes in a direction perpendicular to the polarization direction of the irradiated ultraviolet ray to form a mesogenic component The side chain (6) comprising As a result, the very small anisotropy of the coating film 5 caused by the optical Fris dislocation reaction is amplified by heat, and greater anisotropy is imparted to the coating film 5 .

Similarly, in the 2nd aspect of this embodiment, using the coating film using the side chain type polymer|macromolecule of the structure which has an optical Fries potential group represented by Formula (19) mentioned above, the ultraviolet irradiation amount of the [II] process is ΔA When it exists in 1% - 70% of the range of the ultraviolet irradiation amount made into the maximum WHEREIN: The coating film 7 after polarized light irradiation is heated and it is set as a liquid-crystal state. Then, as shown to FIG.4(c), in the side chain type polymer film 7, the quantity of the optical Fries dislocation reaction which generate|occur|produced differs between the direction parallel to the polarization direction of an irradiation ultraviolet-ray, and the direction perpendicular|vertical. Since the anchoring force of the optical fleece dislocation body 8(a) is stronger than that of the side chain 8 before the dislocation, when a certain amount or more of the optical fleece dislocation body is generated, it self-organizes in a direction parallel to the polarization direction of the irradiated ultraviolet light to form a mesogenic component The containing side chain (8) is reorientated. As a result, the small anisotropy of the coating film 7 caused by the optical Fris dislocation reaction is amplified by heat, and greater anisotropy is imparted to the coating film 7 .

Therefore, the coating film used for the method of this invention can be set as the liquid-crystal aligning film excellent in orientation control ability by introducing anisotropy with high efficiency by performing irradiation of the ultraviolet-ray which polarized with respect to a coating film, and heat processing sequentially.

And in the coating film used for the method of this invention, the irradiation amount of the ultraviolet-ray which polarized with respect to a coating film, and the heating temperature in heat processing are optimized. Thereby, highly efficient, anisotropic introduction into the coating film can be realized.

The irradiation amount of polarized ultraviolet rays optimal for highly efficient anisotropy introduction into the coating film used in the present invention is polarized light that optimizes the amount of photosensitive group photocrosslinking reaction, photoisomerization reaction, or optical Fris dislocation reaction in the coating film It corresponds to the irradiation amount of ultraviolet rays. As a result of irradiating the ultraviolet-ray which polarized with respect to the coating film used for this invention, when there are few photosensitive groups of the side chain which photocrosslinking reaction, a photoisomerization reaction, or an optical Fries rearrangement reaction, it will not become sufficient photoreaction amount. In that case, even if it heats after that, sufficient self-organization does not advance. On the other hand, in the coating film used in the present invention, when polarized ultraviolet rays are irradiated with respect to the structure having a photocrosslinkable group, when the photosensitive groups of the side chains to be crosslinked become excessive, the crosslinking reaction between the side chains will proceed excessively. . In that case, the obtained film|membrane becomes rigid, and it may interfere with advancing of self-organization by subsequent heating. In addition, in the coating film used in the present invention, when polarized ultraviolet rays are irradiated with respect to a structure having an optical Fleece potential group, if the photosensitive groups of the side chain reacting with an optical Fries potential group become excessive, the liquid crystallinity of the coating film will fall too much. . In that case, the liquid crystallinity of the film|membrane obtained also falls, and it may become a hindrance of advancing of the self-assembly by subsequent heating. In the case of irradiating a polarized ultraviolet ray to a structure having an optical Fris dislocation group, if the irradiation amount of ultraviolet ray is too large, the side chain polymer is photodecomposed, and there is a case where the progress of self-organization by subsequent heating is hindered. have.

Therefore, the coating film used for this invention WHEREIN: The optimal quantity which the photosensitive group of a side chain reacts by photocrosslinking reaction, a photoisomerization reaction, or an optical Fries potential reaction by irradiation of a polarization|polarized-light ultraviolet-ray is the photosensitive group which the side chain type polymer film has. It is preferable to set it as 0.1 mol% - 40 mol% of , and it is more preferable to set it as 0.1 mol% - 20 mol%. By making the quantity of the photosensitive group of the side chain which photoreacts into such a range, self-organization in subsequent heat processing advances efficiently, and highly efficient anisotropic formation in a film|membrane is attained.

In the coating film used for the method of this invention, by optimization of the irradiation amount of the ultraviolet-ray which polarized, the quantity of the photocrosslinking reaction and photoisomerization reaction of the photosensitive group in the side chain of a side chain type polymer film, or an optical Fris rearrangement reaction. to optimize And the anisotropic introduction to the coating film used for this invention which is highly efficient is realized together with the subsequent heat processing. In that case, about the quantity of suitable polarization|polarized-light ultraviolet-ray, it can implement based on evaluation of the ultraviolet absorption of the coating film used for this invention.

That is, about the coating film used for this invention, the ultraviolet absorption of the direction parallel to the polarization direction of the polarized ultraviolet-ray after polarization|polarized-light ultraviolet irradiation, and the ultraviolet absorption of the perpendicular|vertical direction are measured, respectively. From the measurement result of ultraviolet absorption, (DELTA)A which is the difference between the ultraviolet absorbance of the direction parallel to the polarization direction of the ultraviolet-ray which polarized in the coating film, and the ultraviolet absorbance of the perpendicular|vertical direction is evaluated. Then, the maximum value (ΔAmax) of ΔA realized in the coating film used in the present invention and the amount of irradiation of polarized ultraviolet rays that realize it are calculated. In the manufacturing method of this invention, on the basis of the polarization|polarized-light ultraviolet irradiation amount which implement|achieves this (DELTA)Amax, the amount of the ultraviolet-ray which polarized in the preferable quantity irradiated in manufacture of a liquid crystal aligning film can be determined.

In the manufacturing method of this invention, it is preferable to make the irradiation amount of the polarized ultraviolet-ray with respect to the coating film used for this invention into 1% - 70% of the range of the amount of polarized ultraviolet-ray which implement|achieves ΔAmax, and 1% - 50% It is more preferable to set it within the range of The coating film used for this invention WHEREIN: The irradiation amount of the polarization|polarized-light ultraviolet-ray within the range of 1% - 50% of the quantity of the polarization|polarized-light ultraviolet-ray which implement|achieves (DELTA)Amax is 0.1 mol% - 20 mol of the whole photosensitive group which the side chain type polymer film has. % corresponds to the quantity of the polarization|polarized-light ultraviolet-ray which carries out a photocrosslinking reaction.

From the above, in the manufacturing method of this invention, in order to implement|achieve highly efficient anisotropic introduction to a coating film, it is good to determine the suitable heating temperature as mentioned above on the basis of the liquid crystal temperature range of the side chain type polymer|macromolecule as a reference. . Therefore, for example, when the liquid crystal temperature range of side chain type polymer|macromolecule used for this invention is 150 degreeC - 250 degreeC, it is preferable to make heating temperature after polarization|polarized-light ultraviolet irradiation into 140 degreeC - 240 degreeC. By doing in this way, larger anisotropy is provided in the coating film used for this invention.

By doing so, the liquid crystal display device provided by the present invention exhibits high reliability against external stress such as light or heat.

As described above, the substrate for a transverse electric field driving type liquid crystal display element manufactured by the method of the present invention or a transverse electric field driving type liquid crystal display element having the substrate has excellent reliability, and is suitable for a large screen and high quality liquid crystal television, etc. can be used readily.

Example

The abbreviation used in the Example is as follows.

(methacrylic monomer)

[Formula 23]

MA1 was synthesized by the synthesis method described in Patent Literature (WO2011-084546).

MA2 was synthesized by the synthesis method described in the patent document (Unexamined-Japanese-Patent No. 9-118717).

MA3 is a novel compound unpublished in the literature and the like, and the synthesis method thereof will be described in detail in Synthesis Example 1 below.

MA3-1 was synthesized by the synthesis method described in the literature (Liquid Crystals (2005), 32 (8), 1031-1044.).

As MA4, commercially available M6BC (manufactured by Midori Chemical Co., Ltd.) was used.

(organic solvent)

THF: tetrahydrofuran

NMP: N-methyl-2-pyrrolidone

BC: Butyl Cellosolve

EDC: 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride

DMAP: 4-dimethylaminopyridine

(Polymerization Initiator)

AIBN: 2,2'-azobisisobutyronitrile

<Synthesis Example 1>

Synthesis of compound [MA3] (MA9 in the formula below)

[Formula 24]

In a 500 ml four neck flask, compound [MA2] (20.00 g, 65.3 mmol), compound [MA9-1] (ie, compound MA3-1) (14.09 g, 71.8 mmol), EDC (15.02 g, 78.4 m) mol), DMAP (0.80 g, 6.53 mmol), and THF (200 g) were added, and reaction was performed at 23°C. Reaction tracking was performed by HPLC, and after confirming completion|finish of reaction, the reaction solution was poured into distilled water (1.2L), ethyl acetate (2L) was added, and the water layer was removed by liquid separation operation. The organic layer was washed 3 times with distilled water (500 ml), and then the organic layer was dried over magnesium sulfate. Then, by filtration and solvent distillation with an evaporator, compound [MA9-2] (namely, compound MA3-2) was obtained as an oily compound.

Then, pyridinium p-toluenesulfonic acid (represented as PPTS) (1.59 g, 6.3 mmol) and ethanol (100 g) were added to the obtained compound [MA9-2], followed by heating and stirring at 60°C. The reaction was followed by HPLC, and after confirming the completion of the reaction, the reaction solution was cooled in an ice bath, and the precipitated solid was filtered and washed with ethanol. By drying the obtained solid under reduced pressure, 19.2 g (yield: 69%) of compound [MA9] (ie, compound MA3) was obtained.

[Measurement of phase potential temperature]

The liquid-crystal phase transition temperature of the polymer obtained by the Example and the comparative example was measured using differential scanning calorimetry (DSC) DSC3100SR (made by Mac Science).

<Example 1>

MA1 (3.99 g, 12.0 mmol), MA2 (2.45 g, 8.0 mmol), and MA4 (7.65 g, 20.0 mmol) were dissolved in NMP (128.6 g) and degassed with a diaphragm pump, followed by AIBN (0.197) g, 1.2 mmol) was added and degassed again. Then, it was made to react at 55 degreeC for 24 hours, and the polymer solution of methacrylate was obtained. This polymer solution was dripped at methanol (1.5 L), and the obtained deposit was filtered. After wash|cleaning this deposit with methanol, it dried under reduced pressure in 50 degreeC oven, and obtained the methacrylate polymer powder (A). This polymer had a number average molecular weight of 20,000 and a weight average molecular weight of 118,000.

The liquid crystal expression temperature of the obtained methacrylate polymer was 160 degreeC - 250 degreeC.

NMP (64.8g) was added to the obtained methacrylate polymer powder (A) (7.2g), and it stirred at room temperature for 5 hours, and was made to melt|dissolve. The liquid crystal aligning agent (A1) was obtained by adding and stirring BC (48g) to this solution.

[Production of liquid crystal cell]

The liquid crystal cell was manufactured in the procedure as shown below using the liquid crystal aligning agent (A) obtained in Example 1. The substrate was a glass substrate having a size of 30 mm x 40 mm, a thickness of 0.7 mm, and a comb-tooth-shaped pixel electrode formed by patterning an ITO film was used. The pixel electrode has a comb-tooth-like shape comprised by arranging a plurality of "<"-shaped electrode elements in which the center part bent. The width in the transverse direction of each electrode element is 10 mu m, and the distance between the electrode elements is 20 mu m. Since the pixel electrode forming each pixel is constituted by arranging a plurality of "<"-shaped electrode elements in which the central part is bent, the shape of each pixel is not a rectangular shape, but a thick, curved shape in the central part similarly to the electrode element. It has a shape resembling the letter 'K'. And each pixel is divided|segmented up and down with the bent part in the center as a boundary, and has the 1st area|region above the bending|flexion part, and the 2nd area|region below. Comparing the 1st area|region and 2nd area|region of each pixel, the formation direction of the electrode element of the pixel electrode which comprises them differs. That is, based on the alignment treatment direction of the liquid crystal alignment film to be described later, in the first region of the pixel, the electrode element of the pixel electrode is formed to form an angle (clockwise) of +15°, and in the second region of the pixel, the pixel electrode The electrode element is formed so as to form an angle (clockwise) of -15°. That is, in the first region and the second region of each pixel, the directions of the rotational operation (in-plane switching) in the substrate plane of the liquid crystal caused by the voltage application between the pixel electrode and the counter electrode are opposite to each other. is structured to be The liquid crystal aligning agent (A) obtained by the synthesis example 1 was spin-coated on the prepared said board|substrate with an electrode. Then, it dried for 90 second with a 70 degreeC hotplate, and formed the liquid crystal aligning film with a film thickness of 100 nm. Then, after 20 mJ/cm2 of 313 nm ultraviolet-ray was irradiated to the coating film surface through a polarizing plate, it heated for 10 minutes with a 220 degreeC hotplate, and obtained the board|substrate with a liquid crystal aligning film. Moreover, it orientation-processed by forming a coating film similarly also to the glass substrate which has a columnar spacer with a height of 4 micrometers in which the electrode is not formed as a counter board|substrate. The sealing compound (XN-1500T by Kyoritsu Chemical) was printed on the liquid crystal aligning film of one board|substrate. Next, after bonding the other board|substrate so that a liquid crystal aligning film surface faced and an orientation direction might be set to 0 degree, and it bonded together, the sealing compound was thermosetted and the empty cell was manufactured. Liquid crystal MLC-2041 (made by Merck Corporation) was inject|poured into this empty cell by the reduced pressure injection method, the injection port was sealed, and the liquid crystal cell provided with the structure of IPS(In-Planes Switching) mode liquid crystal display element was obtained.

[Measurement of voltage retention]

The measurement of the voltage retention of a liquid crystal cell applied the voltage of 4V for 60 microseconds under the temperature of 60 degreeC, and calculated how much the voltage was maintained 16.67 ms later as voltage retention. In addition, VHR-1 by Toyo Technica was used for the measurement of voltage retention.

As reliability evaluation, the alternating voltage of _{10V PP} was applied at the frequency of 30 Hz in 70 degreeC oven for 360 hours. Each voltage retention of the liquid crystal cell before a reliability test and the liquid crystal cell after a reliability test was measured.

The results were as shown in Table 1 below.

<Example 2>

After dissolving MA1 (1.99 g, 6 mmol) and MA3 (5.97 g, 14 mmol) in NMP (73.2 g) and degassing with a diaphragm pump, AIBN (0.164 g, 1.0 mmol) was added and again Degassing was performed. Then, it was made to react at 55 degreeC for 24 hours, and the polymer solution of methacrylate was obtained. This polymer solution was dripped at methanol (1.5 L), and the obtained deposit was filtered. After washing this deposit with methanol, it dried under reduced pressure in 50 degreeC oven, and obtained the methacrylate polymer powder (A2). The number average molecular weight of this polymer was 30000, and the weight average molecular weight was 126800.

The liquid crystal expression temperature of the obtained methacrylate polymer was 160 degreeC - 250 degreeC.

NMP (65.2g) was added to the obtained methacrylate polymer powder (A2) (7.2g), and it stirred at room temperature for 5 hours, and was made to melt|dissolve. The liquid crystal aligning agent (A2) was obtained by adding and stirring BC (48.3g) to this solution.

Also about this liquid crystal aligning agent (A2), except having made the heating by a hotplate 200 degreeC, it is the procedure similar to Example 1, after manufacturing a liquid crystal cell, a reliability test is done, the liquid crystal cell before a reliability test, and reliability Each voltage retention of the liquid crystal cell after a test was measured.

The results were as shown in Table 1 below.

<Example 3>

MA1 (5.32 g, 16.0 mmol), MA2 (4.90 g, 16.0 mmol), and MA4 (3.05 g, 8.0 mmol) were dissolved in NMP (121.3 g) and degassed with a diaphragm pump, followed by AIBN (0.197) g, 1.2 mmol) was added and degassed again. Then, it was made to react at 55 degreeC for 24 hours, and the polymer solution of methacrylate was obtained. This polymer solution was dripped at methanol (1.5 L), and the obtained deposit was filtered. After washing this deposit with methanol, it dried under reduced pressure in 50 degreeC oven, and obtained the methacrylate polymer powder (A3). The number average molecular weight of this polymer was 18,000, and the weight average molecular weight was 100,000.

The liquid crystal expression temperature of the obtained methacrylate polymer was 155 degreeC - 215 degreeC.

NMP (64.8g) was added to the obtained methacrylate polymer powder (A3) (7.2g), and it stirred at room temperature for 5 hours, and was made to melt|dissolve. The liquid crystal aligning agent (A3) was obtained by adding and stirring BC (48g) to this solution.

Also about this liquid crystal aligning agent (A2), except having made the heating by a hotplate 180 degreeC, it is the procedure similar to Example 1, after manufacturing a liquid crystal cell, a reliability test is done, the liquid crystal cell before a reliability test, and reliability Each voltage retention of the liquid crystal cell after a test was measured.

The results were as shown in Table 1 below.

<Example 4>

MA1 (5.32 g, 16.0 mmol), MA2 (3.68 g, 12.0 mmol), and MA3 (5.12 g, 12.0 mmol) were dissolved in NMP (81.1 g) and degassed with a diaphragm pump, followed by AIBN (0.197) g, 1.2 mmol) was added and degassed again. Then, it was made to react at 55 degreeC for 24 hours, and the polymer solution of methacrylate was obtained. This polymer solution was dripped at methanol (1.5 L), and the obtained deposit was filtered. After washing this deposit with methanol, it dried under reduced pressure in 50 degreeC oven, and obtained the methacrylate polymer powder (A4). The number average molecular weight of this polymer was 26000, and the weight average molecular weight was 115000.

The liquid crystal expression temperature of the obtained methacrylate polymer was 150 degreeC - 200 degreeC.

NMP (65.2g) was added to the obtained methacrylate polymer powder (A4) (7.2g), and it stirred at room temperature for 5 hours, and was made to melt|dissolve. The liquid crystal aligning agent (A4) was obtained by adding and stirring BC (48.3g) to this solution.

Also about this liquid crystal aligning agent (A4), except having made the heating by a hotplate 180 degreeC, it is the procedure similar to Example 1, after manufacturing a liquid crystal cell, a reliability test is performed, the liquid crystal cell before a reliability test, and reliability Each voltage retention of the liquid crystal cell after a test was measured.

The results were as shown in Table 1 below.

<Comparative Example 1>

MA1 (4.99 g, 15.0 mmol) and MA2 (4.60 g, 15.0 mmol) were dissolved in THF (88.5 g) and degassed with a diaphragm pump, after which AIBN (0.246 g, 1.5 mmol) was added and again Degassing was performed. After that, it was made to react at 50 degreeC for 30 hours, and the polymer solution of methacrylate was obtained. This polymer solution was added dropwise to diethyl ether (1000 ml), and the obtained precipitate was filtered. This deposit was wash|cleaned with diethyl ether, it was made to dry under reduced pressure in 40 degreeC oven, and the methacrylate polymer powder (B) was obtained. The number average molecular weight of this polymer was 14000, and the weight average molecular weight was 29000.

The liquid crystal phase transition temperature of the obtained methacrylate polymer was 135 degreeC - 180 degreeC.

NMP (29.29g) was added to the obtained methacrylate polymer powder (B1) (6.0g), and it stirred at room temperature for 5 hours, and was made to melt|dissolve. The liquid crystal aligning agent (B1) was obtained by adding and stirring NMP (24.7g) and BC (450.0g) to this solution.

Also about this liquid crystal aligning agent (B1), the irradiation amount of an ultraviolet-ray was 5 mJ, and except having made the temperature of the heating by a hotplate 140 degreeC, it is a procedure similar to Example 1, after manufacturing a liquid crystal cell, reliability test was performed, and each voltage retention of the liquid crystal cell before a reliability test and the liquid crystal cell after a reliability test was measured.

The results were as shown in Table 1 below.

As shown in Table 1, after irradiating an ultraviolet-ray to the side chain type polymer film which expresses liquid crystal, the side chain type polymer film which expresses liquid crystallinity also in a high temperature temperature region turns out that orientation processing temperature can be improved. there was. Moreover, although the fall of the voltage retention after a reliability test was reduced in the side chain type polymer membrane which expresses liquid crystallinity also in a high temperature range, in Comparative Example 1, it turned out that the voltage retention after long-term reliability falls. The material of the present invention exhibits excellent long-term reliability characteristics because the material of the present invention can be subjected to alignment treatment in a high-temperature region, so that residual solvents and residual monomers contained in the alignment film are sublimed, and impurities contained in the liquid crystal display element are reduced. Moreover, since an orientation process becomes possible in the calcination temperature range similar to the conventional liquid crystal aligning film, and the effort of calcination furnace adjustment also becomes unnecessary, it is preferable also from a viewpoint of productive efficiency stabilization. As described above, it was confirmed that the liquid crystal display device manufactured according to the present invention exhibits very excellent display quality.

Figure 1
1: side chain type polymer membrane
2, 2a: side chain
Figure 2
3: side chain type polymer membrane
4, 4a: side chain
Fig. 3
5: side chain polymer membrane
6, 6a: side chain
Fig. 4
7: side chain polymer membrane
8, 8a: side chain

Claims (18)

(A) a photosensitive side chain polymer expressing liquid crystallinity in a predetermined temperature range, wherein the lower limit of the temperature range expressing liquid crystallinity is 150 ° C. or higher, and the upper limit is 200 ° C. or higher, the side chain polymer, and
(B) organic solvent
A polymer composition containing (A) a photosensitive side chain polymer expressing liquid crystallinity in a predetermined temperature range, wherein the lower limit of the temperature range expressing liquid crystallinity is 150 ° C. or higher, and the upper limit is 220 ° C. or higher, the side chain polymer, and
(B) organic solvent
A polymer composition containing 3. The method according to claim 1 or 2,
(A) The composition in which a component has a photosensitive side chain which raise|generates photocrosslinking, photoisomerization, or optical fleece transition. 3. The method according to claim 1 or 2,
(A) A component is following formula (1) - (6)
(Wherein, A, B, D are each independently a single bond, -O-, -CH ₂ -, -COO-, -OCO-, -CONH-, -NH-CO-, -CH=CH-CO represents -O-, or -O-CO-CH=CH-;
S is a C1-C12 alkylene group, and the hydrogen atom couple|bonded with them may be substituted by the halogen group;
T is a single bond or an alkylene group having 1 to 12 carbon atoms, and the hydrogen atom bonded thereto may be substituted with a halogen group;
Y ₁ represents a ring selected from a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring and an alicyclic hydrocarbon having 5 to 8 carbon atoms, or 2 to 6 identical or different selected from their substituents A ring is a group formed by bonding through a bonding group B, and the hydrogen atoms bonded thereto are each independently -COOR ₀ (wherein R ₀ represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms), -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms;
Y ₂ is a group selected from the group consisting of a divalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, and combinations thereof, and a hydrogen atom bonded thereto may be each independently _{substituted with -NO 2} , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms;
R represents a hydroxyl group or an alkoxy group having 1 to 6 carbon atoms, or has the same definition as _{Y 1 ;}
X is a single bond, -COO-, -OCO-, -N=N-, -CH=CH-, -C≡C-, -CH=CH-CO-O-, or -O-CO-CH= When CH- is represented and the number of X becomes 2, X may be the same or different;
Cou represents a coumarin-6-yl group or a coumarin-7-yl group, and hydrogen atoms bonded thereto are each independently -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, It may be substituted with a halogen group, a C1-C5 alkyl group, or a C1-C5 alkyloxy group;
q1 and q2, one is 1 and the other is 0;
q3 is 0 or 1;
P and Q are each independently a group selected from the group consisting of a divalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, and combinations thereof; , when X is -CH=CH-CO-O-, -O-CO-CH=CH-, P or Q on the side to which -CH=CH- is bonded is an aromatic ring;
When the number of P becomes 2, P may be same or different;
When the number of Q becomes 2, Q may be same or different;
l1 is 0 or 1;
l2 is an integer of 0 to 2;
When l1 and l2 are both 0, when T is a single bond, A also represents a single bond;
When l1 is 1, when T is a single bond, B also represents a single bond;
H and I are each independently a group selected from a divalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, and combinations thereof.)
A composition having any one type of photosensitive side chain selected from the group consisting of
[Formula 1]

5. The method of claim 4,
(A) When the terminal of the photosensitive side chain of Formula (1)-(6) as a component is -COOH, the side chain is a benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, and C5-C5 8 has two or more ring structures selected from alicyclic hydrocarbons,
When the terminal of the side chain is other than -COOH, the side chain has three ring structures selected from a benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, and a C5-C8 alicyclic hydrocarbon. A composition having an abnormality. 3. The method according to claim 1 or 2,
(A) A component is a following formula (7) - (10)
(Wherein, A, B, D are each independently a single bond, -O-, -CH ₂ -, -COO-, -OCO-, -CONH-, -NH-CO-, -CH=CH-CO represents -O-, or -O-CO-CH=CH-;
Y ₁ represents a ring selected from a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, and an alicyclic hydrocarbon having 5 to 8 carbon atoms, or 2 to 6 identical or different selected from their substituents A ring is a group formed by bonding through a bonding group B, and the hydrogen atoms bonded thereto are each independently -COOR ₀ (wherein R ₀ represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms), -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, a C1-C5 alkyl group, or a C1-C5 alkyloxy group may be substituted;
X is a single bond, -COO-, -OCO-, -N=N-, -CH=CH-, -C≡C-, -CH=CH-CO-O-, or -O-CO-CH= When CH- is represented and the number of X becomes 2, X may be the same or different;
l represents an integer of 1 to 12;
m represents an integer of 0 to 2, m1, m2 represents an integer of 1 to 3;
n represents an integer of 0 to 12 (provided that when n = 0, B is a single bond);
Y ₂ is a group selected from the group consisting of a divalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, and combinations thereof, and a hydrogen atom bonded thereto may be each independently _{substituted with -NO 2} , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms;
R represents a hydroxyl group or an alkoxy group having 1 to 6 carbon atoms, or has the same definition as _{Y 1 )}
A composition having any one type of photosensitive side chain selected from the group consisting of.
[Formula 2]

3. The method according to claim 1 or 2,
(A) A component is a following formula (11) - (13)
(Wherein, A and B are each independently a single bond, -O-, -CH ₂ -, -COO-, -OCO-, -CONH-, -NH-CO-, -CH=CH-CO-O -, or -O-CO-CH=CH-;
X is a single bond, -COO-, -OCO-, -N=N-, -CH=CH-, -C≡C-, -CH=CH-CO-O-, or -O-CO-CH= When CH- is represented and the number of X becomes 2, X may be the same or different;
l represents the integer of 1-12, m represents the integer of 0-2, m1 represents the integer of 1-3;
R represents a ring selected from a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring and an alicyclic hydrocarbon having 5 to 8 carbon atoms, or the same or different 2 to 6 rings selected from their substituents is a group formed by bonding via a bonding group B, and the hydrogen atoms bonded thereto are each independently -COOR ₀ (wherein R ₀ represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms), -NO ₂ , - CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms may be substituted, or a hydroxyl group or a carbon number 1 to 6 group represents an alkoxy group of
A composition having any one type of photosensitive side chain selected from the group consisting of.
[Formula 3]

3. The method according to claim 1 or 2,
(A) the component, the following formula (14) or (15)
(Wherein, A and B are each independently a single bond, -O-, -CH ₂ -, -COO-, -OCO-, -CONH-, -NH-CO-, -CH=CH-CO-O -, or -O-CO-CH=CH-;
Y ₁ represents a ring selected from a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, and an alicyclic hydrocarbon having 5 to 8 carbon atoms, or 2 to 6 identical or different selected from their substituents A ring is a group formed by bonding through a bonding group B, and the hydrogen atoms bonded thereto are each independently -COOR ₀ (wherein R ₀ represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms), -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, a C1-C5 alkyl group, or a C1-C5 alkyloxy group may be substituted;
l represents an integer of 1 to 12, and m1 and m2 represent an integer of 1 to 3)
A composition having a photosensitive side chain represented by .
[Formula 4]

3. The method according to claim 1 or 2,
(A) A component is the following formula (16) or (17)
(wherein A is a single bond, -O-, -CH ₂ -, -COO-, -OCO-, -CONH-, -NH-CO-, -CH=CH-CO-O-, or -O- Represents CO-CH=CH-;
X is a single bond, -COO-, -OCO-, -N=N-, -C=C-, -C≡C-, -CH=CH-CO-O-, or -O-CO-CH= When CH- is represented and the number of X becomes 2, X may be the same or different;
l represents the integer of 1-12, m represents the integer of 0-2)
A composition having a photosensitive side chain represented by .
[Formula 5]

3. The method according to claim 1 or 2,
(A) the component, the following formula (18) or (19)
(Wherein, A and B are each independently a single bond, -O-, -CH ₂ -, -COO-, -OCO-, -CONH-, -NH-CO-, -CH=CH-CO-O -, or -O-CO-CH=CH-;
Y ₁ represents a ring selected from a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring and an alicyclic hydrocarbon having 5 to 8 carbon atoms, or 2 to 6 identical or different selected from their substituents A ring is a group formed by bonding through a bonding group B, and the hydrogen atoms bonded thereto are each independently -COOR ₀ (wherein R ₀ represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms), -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms;
q1 and q2, one is 1 and the other is 0;
l represents an integer of 1 to 12, m1, m2 represents an integer of 1 to 3;
R ₁ represents a hydrogen atom, -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms. ) A composition having any one type of photosensitive side chain selected from the group consisting of.
[Formula 6]

3. The method according to claim 1 or 2,
(A) A component is the following formula (20)
(Wherein, A and B are each independently a single bond, -O-, -CH ₂ -, -COO-, -OCO-, -CONH-, -NH-CO-, -CH=CH-CO-O -, or -O-CO-CH=CH-;
Y ₁ represents a ring selected from a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a pyrrole ring, and an alicyclic hydrocarbon having 5 to 8 carbon atoms, or 2 to 6 identical or different selected from their substituents A ring is a group formed by bonding through a bonding group B, and the hydrogen atoms bonded thereto are each independently -COOR ₀ (wherein R ₀ represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms), -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, a C1-C5 alkyl group, or a C1-C5 alkyloxy group may be substituted;
X is a single bond, -COO-, -OCO-, -N=N-, -CH=CH-, -C≡C-, -CH=CH-CO-O-, or -O-CO-CH= When CH- is represented and the number of X becomes 2, X may be the same or different;
1 represents the integer of 1-12, m represents the integer of 0-2) The composition which has a photosensitive side chain represented by it.
[Formula 7]

3. The method according to claim 1 or 2,
(A) A component is the following formula (21)-(31)
(Wherein, A and B are each independently a single bond, -O-, -CH ₂ -, -COO-, -OCO-, -CONH-, -NH-CO-, -CH=CH-CO-O- , or -O-CO-CH=CH-;
Y ₃ is a group selected from the group consisting of a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a nitrogen-containing heterocyclic ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, and combinations thereof, and is bonded to them Each hydrogen atom to be used may be independently _{substituted with -NO 2} , -CN, a halogen group, an alkyl group having 1 to 5 carbon atoms, or an alkyloxy group having 1 to 5 carbon atoms;
R ₃ is a hydrogen atom, -NO ₂ , -CN, -CH=C(CN) ₂ , -CH=CH-CN, a halogen group, a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, nitrogen-containing a heterocyclic ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, an alkyl group having 1 to 12 carbon atoms, or an alkoxy group having 1 to 12 carbon atoms;
q1 and q2, one is 1 and the other is 0;
l represents an integer of 1 to 12, m represents an integer of 0 to 2, with the proviso that in formulas (23) to (24), the sum of all m is 2 or more, and formulas (25) to (26) In , the sum of all m is 1 or more, and m1, m2 and m3 each independently represent an integer of 1 to 3;
R ₂ is a hydrogen atom, —NO ₂ , —CN, a halogen group, a monovalent benzene ring, a naphthalene ring, a biphenyl ring, a furan ring, a nitrogen-containing heterocyclic ring, an alicyclic hydrocarbon having 5 to 8 carbon atoms, an alkyl group, or an alkyl represents an oxy group;
Z ₁ , Z ₂ represents a single bond, -CO-, -CH ₂ O-, -CH=N-, or -CF ₂ -) A composition having any one type of liquid crystalline side chain selected from the group consisting of.
[Formula 8]

[I] A step of applying the composition according to claim 1 or 2 on a substrate having a conductive film for lateral electric field drive to form a coating film;
[II] a step of irradiating the coating film obtained in [I] with polarized ultraviolet rays; and
[III] A step of heating the coating film obtained in [II];
The manufacturing method of the board|substrate which has the said liquid crystal aligning film which obtains the liquid crystal aligning film for transverse electric field drive type liquid crystal display elements to which orientation control ability was provided by having. The board|substrate which has a liquid crystal aligning film for lateral electric field drive type liquid crystal display elements manufactured by the method of Claim 13. A transverse electric field driving type liquid crystal display device comprising the substrate according to claim 14 . A step of preparing the substrate (first substrate) according to claim 14;
[I'] on the second substrate
(A) a photosensitive side chain polymer expressing liquid crystallinity in a predetermined temperature range, wherein the lower limit of the temperature range expressing liquid crystallinity is 150 ° C. or higher, and the upper limit is 200 ° C. or higher, the side chain polymer, and
(B) organic solvent
A process of forming a coating film by applying a polymer composition containing;
[II'] A step of irradiating the coating film obtained in [I'] with polarized ultraviolet rays; and
[III'] A step of heating the coating film obtained in [II'];
The process of obtaining the 2nd board|substrate which has the said liquid crystal aligning film which obtains the liquid crystal aligning film to which orientation control ability was provided by having; And
[IV] The process of opposingly arrange|positioning the said 1st and 2nd board|substrate so that the liquid crystal aligning film of a said 1st and 2nd board|substrate may oppose through a liquid crystal, and obtaining a liquid crystal display element;
The manufacturing method of the liquid crystal display element which obtains a transverse electric field drive type liquid crystal display element by having. A step of preparing the substrate (first substrate) according to claim 14;
[I'] on the second substrate
(A) a photosensitive side chain polymer expressing liquid crystallinity in a predetermined temperature range, wherein the lower limit of the temperature range expressing liquid crystallinity is 150 ° C. or higher, and the upper limit is 220 ° C. or higher, the side chain polymer, and
(B) organic solvent
A process of forming a coating film by applying a polymer composition containing;
[II'] A step of irradiating the coating film obtained in [I'] with polarized ultraviolet rays; and
[III'] A step of heating the coating film obtained in [II'];
The process of obtaining the 2nd board|substrate which has the said liquid crystal aligning film which obtains the liquid crystal aligning film to which orientation control ability was provided by having; And
[IV] The process of opposingly arrange|positioning the said 1st and 2nd board|substrate and obtaining a liquid crystal display element so that the liquid crystal aligning film of the said 1st and 2nd board|substrate may oppose through a liquid crystal;
The manufacturing method of the liquid crystal display element which obtains a transverse electric field drive type liquid crystal display element by having. A transverse electric field driving type liquid crystal display device manufactured by the method according to claim 16.

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