KR20150061128A - Liquid crystal display apparatus and manufacturing method of the same - Google Patents

Abstract

The present invention provides a liquid crystal display apparatus comprising: a first substrate defined as a plurality of pixel areas; a second substrate separated to face the first substrate; a first orientation film formed on one surface of the first substrate; a second orientation film formed on a surface facing one surface of the first substrate in the second substrate; a plurality of polymer partitions in which monomers having multiple functional groups are polymerized and cross-linked between the first orientation film and the second orientation film; and a liquid crystal located between a plurality of polymer partitions. Also, the present invention provides a manufacturing method thereof.

Description

TECHNICAL FIELD [0001] The present invention relates to a liquid crystal display (LCD)

The present invention relates to a liquid crystal display device and a manufacturing method thereof.

The liquid crystal display device technology has been continuously developed to replace the fixed display type display using a conventional CRT (Cathode-Ray Tube), and it has become increasingly large-sized such as a notebook display device, a computer monitor, ) Or PID (Public Information Display) market. It also keeps its place in the mobile arena. Such a liquid crystal display device is fragile because it uses a glass substrate and can not be deformed, so that the display size is limited and it is inconvenient to carry. In order to overcome this problem, a flexible substrate is used instead of a glass substrate, and researches on a next generation display that can be broken and deformed are actively being conducted.

In the case of a liquid crystal display device, particularly a liquid crystal display device for a flexible display device, since a plastic substrate is used, the liquid crystal in a liquid state is not confined within the pixel as the substrate is warped, and the cell gap between the substrates is uniform Need to keep.

At this time, it is possible to introduce the structure into the liquid crystal display device. If the rigidity or heat resistance of the structure is not sufficiently provided, there arises a problem that when the heat is applied, the structure collapses or the cell gap is not maintained.

SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid crystal display device and a manufacturing method in which the cell gap is firmly maintained and the heat resistance is improved.

In order to achieve the above-mentioned object, in one aspect, the present invention provides a liquid crystal display comprising: a first substrate defined as a plurality of pixel regions; A second substrate spaced apart from the first substrate; A first alignment layer formed on one surface of the first substrate; A second alignment layer formed on a surface of the second substrate facing the first surface of the first substrate; A plurality of polymeric partition walls formed by polymerizing and cross-linking monomers having a plurality of functional groups between the first alignment layer and the second alignment layer; And a liquid crystal positioned between the plurality of polymer walls.

In another aspect, the present invention provides a method of manufacturing a liquid crystal display comprising the steps of: forming a first adhesive layer on a first support substrate; forming a first substrate defined by a plurality of pixel regions on the first adhesive layer; Forming a second adhesive layer on the second support substrate and forming a second substrate on the second adhesive layer; Coating a first alignment layer on the first substrate; Coating a second alignment layer on the second substrate; Forming a crosslinked polymeric partition wall by polymerizing the monomer having the plurality of functional groups between the first alignment layer and the second alignment layer; And separating the first supporting substrate and the second supporting substrate from each other.

The present invention has the effect that the cell gap of the liquid crystal display device is firmly maintained and the heat resistance is improved.

1 is a system configuration diagram of a liquid crystal display device to which embodiments are applied.
2 is a perspective view schematically showing the liquid crystal display of FIG. 1 according to an embodiment.
3A to 3E are views illustrating a method of manufacturing a liquid crystal display device according to another embodiment.
4 is a view showing cross-linking in a polymeric partition wall.
FIG. 5A is a diagram showing a result of a heat resistance test of a liquid crystal display device including a polymer barrier formed by polymerization of monomers having one functional group. FIG.
FIG. 5B is a diagram showing a result of a heat resistance test of a liquid crystal display device including a polymer partition wall formed by polymerizing monomers having a plurality of functional groups. FIG.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected." In the same context, when an element is described as being formed on an "upper" or "lower" side of another element, the element may be formed either directly or indirectly through another element As will be understood by those skilled in the art.

As used in this specification and the appended claims, the following terms have the following meanings, unless otherwise stated.

"Halo" or "halogen" is fluorine (F), bromine (Br), chlorine (Cl) or iodine (I) unless otherwise stated.

"Alkyl" or "alkyl group ", unless otherwise specified, has a single bond of from 1 to 60 carbon atoms and includes straight chain alkyl groups, branched chain alkyl groups, cycloalkyl (cycloaliphatic) groups, alkyl- Quot; means a radical of a saturated aliphatic group, including an alkyl group,

"Haloalkyl group" or "halogenalkyl group" means an alkyl group substituted with a halogen unless otherwise stated.

"Heteroalkyl" means that at least one of the carbon atoms constituting the alkyl group is replaced by a heteroatom.

"Alkenyl group" or "alkynyl group ", unless otherwise specified, each have a double bond or triple bond of 2 to 60 carbon atoms and include, but are not limited to, straight chain or branched chain groups.

"Cycloalkyl" means an alkyl that forms a ring having a carbon number of 3 to 60 unless otherwise stated, but is not limited thereto.

The term "alkoxyl group", "alkoxy group", or "alkyloxy group" refers to an alkyl group having an oxygen radical attached thereto,

&Quot; Alkenooxyl group ", "Alkenooxy group "," Alkenyloxy group ", or "Alkenyloxy group" means an alkenyl group having an oxygen radical attached thereto. Unless otherwise specified, .

"Aryloxyl group" or "aryloxy group" means an aryl group attached with an oxygen radical, and unless otherwise stated, has 6 to 60 carbon atoms, but is not limited thereto.

"Aryl group" and "arylene group" each independently have 6 to 60 carbon atoms, but are not limited thereto. An aryl group or an arylene group means a single ring or an aromatic ring of multiple rings, and neighboring substituents include aromatic rings formed by bonding or participating in the reaction. For example, the aryl group may be a phenyl group, a biphenyl group, a fluorene group, or a spirobifluorene group.

The prefix "aryl" or "ar" means a radical substituted with an aryl group. For example, the arylalkyl group is an alkyl group substituted with an aryl group, the arylalkenyl group is an alkenyl group substituted with an aryl group, and the radical substituted with an aryl group has the carbon number described in the present specification.

"Heteroalkyl" means alkyl containing one or more heteroatoms unless otherwise specified. "Heteroaryl group" or "heteroarylene group" means an aryl or arylene group having from 2 to 60 carbon atoms, each containing at least one heteroatom unless otherwise specified, including, but not limited to, a single ring and multiple Rings, and adjacent functional devices may be formed in combination.

The term "heterocyclic group" includes at least one of a single ring and a multicyclic ring, and includes a heteroaliphatic ring and a heteroaromatic ring, unless otherwise specified, includes at least one heteroatom, has from 2 to 60 carbon atoms. Adjacent functional groups may be combined and formed.

"Heteroatom" refers to N, O, S, P or Si, unless otherwise indicated.

Unless otherwise stated, the term "aliphatic" as used herein means an aliphatic hydrocarbon having 1 to 60 carbon atoms and an "aliphatic ring" means an aliphatic hydrocarbon ring having 3 to 60 carbon atoms.

Unless otherwise specified, the term "ring" as used herein refers to a fused ring consisting of an aliphatic ring of 3 to 60 carbon atoms or an aromatic ring of 6 to 60 carbon atoms or a heterocycle of 2 to 60 carbon atoms, or combinations thereof, Saturated or unsaturated ring.

Other hetero-compounds or hetero-radicals other than the above-mentioned hetero-compounds include, but are not limited to, one or more heteroatoms.

Unless otherwise specified, "carbonyl" means -COR ', wherein R' is hydrogen, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, a cycloalkyl group having 3 to 30 carbon atoms, An alkenyl group having 1 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, or a combination thereof.

Unless otherwise stated, "ether" refers to -RO-R ', wherein R or R' are each independently selected from the group consisting of hydrogen, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, A cycloalkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, or a combination thereof.

Unless otherwise expressly stated, "substituted or unsubstituted" to " substituted "means a group selected from the group consisting of deuterium, a halogen, an amino group, a nitrile group, a nitro group, an alkyl group having 1 to 20 carbon atoms, an alkoxyl group having 1 to 20 carbon atoms, An alkylthiophene group having 6 to 20 carbon atoms, an alkenylthio group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, From the group consisting of an aryl group having 6 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms substituted with deuterium, an arylalkenyl group having 8 to 20 carbon atoms, a silane group, a boron group, a germanium group and a heterocyclic group having 2 to 20 carbon atoms Substituted with one or more substituents selected, and is not limited to these substituents.

1 is a system configuration diagram of a liquid crystal display device to which embodiments are applied.

1, a liquid crystal display 100 includes a liquid crystal display panel 140, a data driver 120, a gate driver 130, a timing controller 110, and the like.

First, the timing controller 110 controls the data driver 120 based on the vertical / horizontal synchronization signals Vsync and Hsync input from the host system and external timing signals such as a video signal RGB and a clock signal CLK. And a gate control signal (GCS) for controlling the gate driver 130. The gate control signal The timing controller 110 converts the video signal RGB input from the host system into a data signal format used by the data driver 120 and outputs the converted video signal R'G'B ' ).

The data driver 120 supplies the converted video signal R'G'B 'in response to the data control signal DCS input from the timing controller 110 and the converted video signal R'G'B' (Analog pixel signal or data voltage) which is a voltage value corresponding to the gray-scale value, and supplies the data to the data line.

The gate driver 130 sequentially supplies a scan signal (a gate pulse, a scan pulse, and a gate-on signal) to the gate line in response to a gate control signal GCS input from the timing controller 110.

On the other hand, the liquid crystal display panel 140 may be a liquid crystal display device including two substrates and a liquid crystal layer, an alignment film, and the like positioned between the two substrates.

The first substrate of the liquid crystal display panel 140 may be implemented as a COT (Color Filter On TFT) structure. In this case, the black matrix and the color filter may be formed on the first substrate.

A plurality of gate lines (or scan lines) crossing the plurality of data lines (D1 to Dm, m are natural numbers) and the data lines (D1 to Dm) are formed on a first substrate (lower substrate) of the liquid crystal display panel 140. [ A plurality of transistors formed at the intersections of the data lines D1 to Dm and the gate lines G1 to Gn and the liquid crystal cells to charge the data voltage A storage capacitor connected to the pixel electrode for maintaining the voltage of the liquid crystal cell, and the like.

The second substrate (upper substrate) of the liquid crystal display panel 140 may include a black matrix, a color filter, and the like.

On the other hand, the pixels P of the liquid crystal display panel 140 are formed in a pixel region defined by the data lines D1 to Dm and the gate lines G1 to Gn, and arranged in a matrix form. The liquid crystal cells of each of the pixels are driven by an electric field applied in accordance with a voltage difference between a data voltage applied to the pixel electrode and a common voltage applied to the common electrode to control the amount of incident light.

When the liquid crystal display device 100 is a flexible display device, the liquid crystal display panel 140 may include barrier ribs for maintaining a cell gap, and the barrier ribs may be formed by polymerizing monomers having a plurality of functional groups have.

The liquid crystal display panel 140 may be realized by any known liquid crystal mode such as TN (Twisted Nematic) mode, VA (Vertical Alignment) mode, IPS (In Plane Switching) mode and FFS (Fringe Field Switching) mode.

In this case, the common electrode may be formed on the second substrate in the vertical electric field driving method such as the TN mode and the VA mode, and may be formed on the first substrate together with the pixel electrode in the horizontal electric field driving method such as the IPS mode and the FFS mode .

Hereinafter, embodiments of the liquid crystal display device 100 including the liquid crystal display panel 140 described with reference to FIG. 1 will be described in detail.

2 is a perspective view schematically showing the liquid crystal display of FIG. 1 according to an embodiment.

2, the liquid crystal display device 200 includes a first substrate 202a, a second substrate 202b formed to face the first substrate 202a so as to face the first substrate 202a, a second substrate 202b formed on one surface of the first substrate 202a, A second alignment layer 204b formed on the first alignment layer 204a and the second substrate 202b on a surface opposing one surface of the first substrate 202a, a second alignment layer 204b formed on the first alignment layer 204a, A plurality of polymer barrier ribs 206 formed between the plurality of polymer barrier ribs 206 and a liquid crystal 210 located in the liquid crystal fill region 208 between the plurality of polymer barrier ribs 206.

The first substrate 202a and the second substrate 202b may be formed of a material selected from the group consisting of polyethylene terephthalate (PEN), polyethylene naphthalate (PEN), polycarbonate (PC), polyethersulphone (PES), polyarylate polyimide, and the like, but the present invention is not limited thereto. The first substrate 202a and the second substrate 202b can be selected in consideration of glass transition temperature, thermal expansion coefficient, dimensional stability, and the like. Particularly, since the PI series has high stability against heat, And a second substrate 202b.

The first substrate 202a and the second substrate 202b of the plastic type can be applied to a curved surface or a flexible display device which can be bent and the flexible display device has a structure capable of maintaining a cell gap need.

The first alignment layer 204a and the second alignment layer 204b may be made of a polyimide-based compound, but the present invention is not limited thereto.

Rubbing treatment may be performed on the surfaces of the first and second alignment films 204a and 204b to align the liquid crystal and the alignment patterns of the first alignment film 204a and the second alignment film 204b may be the same But it is not limited thereto, and it may be varied depending on the liquid crystal mode.

In the case where the first substrate 202a and the second substrate 202b of the liquid crystal display device 200 are made of a plastic material, a cell gap may be maintained, and a seal may be formed due to the deflection of the liquid crystal 210. [ In order to prevent the problem of breakage, the polymeric partition wall 206 may be formed in the non-display area of the liquid crystal display device 200. [

The polymer partition wall 206 may be formed by performing a polymerization reaction through phase separation by photo-curing or thermosetting the monomer injected together with the liquid crystal 210. In addition to the monomer, an initiator for initiating the polymerization reaction together with the liquid crystal 210, a crosslinking agent for increasing the rigidity of the polymeric partition wall 206, and the like may be further included.

Monomers include a plurality of functional groups. The functional group may be an acrylate, and one monomer may have two or more functional groups.

The monomer having a plurality of functional groups may be a compound represented by the following formula.

≪ Formula 1 >

In the formula, a and b are natural numbers of 1 or more, A is an aryl group having 6 to 60 carbon atoms; A fluorenyl group; A heterocyclic group having 2 to 60 carbon atoms and containing at least one hetero atom selected from O, N, S, Si and P; A fused ring group of an aliphatic ring having 3 to 60 carbon atoms and an aromatic ring having 6 to 60 carbon atoms; An alkyl group having 1 to 50 carbon atoms; An alkenyl group having 2 to 20 carbon atoms; An alkynyl group having 2 to 20 carbon atoms; An alkoxyl group having 1 to 30 carbon atoms; And an aryloxy group having 6 to 30 carbon atoms.

Here, when the aryl group, the fluorenyl group, the heterocyclic group, the fused ring group, the alkyl group, the alkenyl group, the alkynyl group, the alkoxyl group or the aryloxy group is further substituted with one or more substituents, halogen; A silane group; Siloxyl group; Boron group; Germanium group; Cyano; A nitro group; An alkylthio group having 1 to 20 carbon atoms; An alkoxyl group having 1 to 20 carbon atoms; An alkyl group having 1 to 20 carbon atoms; An alkenyl group having 2 to 20 carbon atoms; An alkynyl group having 2 to 20 carbon atoms; Having 6 to 20 carbon atoms An aryl group; An aryl group having 6 to 20 carbon atoms substituted with deuterium; A fluorenyl group; A heterocyclic group having 2 to 20 carbon atoms; A cycloalkyl group having 3 to 20 carbon atoms; An arylalkyl group having 7 to 20 carbon atoms, and an arylalkenyl group having 8 to 20 carbon atoms.

More specifically, A may be one of the compounds represented by the formula:

       &Lt; Formula 2 > < EMI ID =

       &Lt; Formula 4 > < EMI ID =

&Lt; Formula 6 > < EMI ID =

&Lt; Formula 8 > < EMI ID =

&Lt; Formula 10 > < EMI ID =

&Lt; Formula 12 >

&Lt; Formula 13 > < EMI ID =

&Lt; Formula 16 >

(n, p, q is a natural number of 1 or more, provided that p + q = 3)

However, A is not limited thereto and can be various compounds.

Synthetic example

The above-mentioned monomers can be synthesized, for example, as follows.

[Reaction Scheme 1]

(2) can be formed by an esterification reaction as in Scheme 1, and (3), (4), (5), (15) and (16) can also be synthesized in the same manner.

[Reaction Scheme 2]

(7) can be formed by an esterification reaction as shown in Reaction Scheme 2, and (6), (7), (8) and (9) can also be synthesized in the same manner.

[Reaction Scheme 3]

(7) can be formed by an esterification reaction as shown in Reaction Scheme 3, and (11), (12), (13) and (14) can also be synthesized in the same manner.

The ratio of the monomer to the liquid crystal 210 may be 0.05 to 0.33. That is, the weight ratio of the liquid crystal 210 to the monomers may be 75 wt% to 95 wt% of the liquid crystal 210, and the weight ratio of the monomers may be 5 wt% to 25 wt%. If the weight ratio of the monomers is less than 5% by weight, the polymer partition walls 206 can not sufficiently support between the substrates, which may cause problems in maintaining the cell gap. On the other hand, The liquid crystal display device 200 does not participate in the formation of the liquid crystal display device 200,

The plurality of functional groups contained in the monomers are subjected to polymerization reaction through, for example, phase separation during light irradiation, and the functional groups that are spaced apart in the course of the polymerization can be cross-linked. As a result, the molecular weight of the polymer is further increased, the rigidity of the polymer partition wall 206 is increased, and the heat resistance is improved.

The photoinitiator for the formation of the polymeric partition 206 may be selected from the group consisting of chloroacetophenone, diethoxy acetophenone, 1-hydroxycyclohexyl phenyl ketone, linking agent may be a photoinitiator such as benzoin ether or the like and the cross-linking agent may be dibenzoyl peroxide, dicumyl peroxide, tert-butyl peroxybenzoate, And so on.

Finally, a liquid crystal filling region 208 is formed between the first substrate 202a and the second substrate 202b, which are separated through the polymer partition wall 206. The liquid crystal filling region 208 is filled with liquid crystal, (Residual monomer) which does not participate in the formation of the polymer partition wall 206 depending on the case may be included.

3A to 3E are views illustrating a method of manufacturing a liquid crystal display device according to another embodiment.

3A to 3E, a method of manufacturing a liquid crystal display device 200 includes forming a first adhesive layer 314a on a first supporting substrate 312a, forming a plurality of pixels 314a on a first adhesive layer 314a, A second adhesive layer 314b is formed on the second support substrate 312b and a second substrate 202b is formed on the second adhesive layer 314b Coating the first alignment layer 204a on the first substrate 202a, coating the second alignment layer 204b on the second substrate 202b, coating the second alignment layer 204b on the first substrate 202a, A step of injecting a mixture containing a liquid crystal 210 and a monomer having a plurality of functional groups 316 between the first substrate 202a and the second substrate 202b, A step of forming the polymer partition 206 between the first orientation film 204a and the second orientation film 204b and a step of separating the first support substrate 312a and the second support substrate 312b.

First, referring to FIG. 3A, the first supporting substrate 312a and the second supporting substrate 312b are prepared so that the liquid crystal display device 200 can be protected from physical / chemical stress during processing. The first supporting substrate 312a and the second supporting substrate 312b may be glass, but are not limited thereto.

The first adhesive layer 314a and the second adhesive layer 314b are formed on the first supporting substrate 312a and the second supporting substrate 312b respectively and then the first substrate 202a and the second substrate 202b are attached .

Here, the first substrate 202a and the second substrate 202b may be plastic compounds such as PET, PEN, PC, PES, PAR, PCO, and PI, but are not limited thereto. Also, the cleaning step and the heat treatment step of the first substrate 202a and the second substrate 202b may be included.

The step of coating the first alignment layer 204a and the coating of the second alignment layer 204b may be performed by using a first alignment layer 204b on one surface of the first substrate 202a and on the entire surface of the second substrate 202b facing the first substrate 202a 204a and the second alignment layer 204b and is a process of wet coating such as dry coating or spin coating or printing such as screen printing or inkjet printing But is not limited thereto.

Referring to FIG. 3B, the first substrate 202a and the second substrate 202b are joined together.

3C, a step of injecting a mixture containing the liquid crystal 210 and the monomer 316 having a plurality of functional groups is performed, wherein the mixture may further include an initiator, a crosslinking agent, and the like.

The initiator may be, but is not limited to, dibenzoyl peroxide, dicumyl peroxide, tert-butyl peroxybenzoate, and the like.

The crosslinking agent may be, but not limited to, PEGDA, HDDA, TPGDA, TMPTA, TMPTMP, TMPTMA, and the like. The crosslinking agent binds the functional groups in the polymer chain when the polymer partition wall 206 is formed, thereby making the polymer partition 206 more rigid.

In such a mixture, the ratio of the monomer 316 to the liquid crystal 210 may be 0.05 to 0.33. That is, the weight ratio of the liquid crystal 210 to the monomer 316 may be 75 wt% to 95 wt% of the liquid crystal 210, and the weight ratio of the monomer 316 may be 5 wt% to 25 wt%. If the weight ratio of the monomer (316) is less than 5% by weight, the polymer partition wall (206) can not sufficiently support between the substrates, The liquid crystal display device 200 does not participate in the formation of the polymer barrier ribs 206, but remains between the liquid crystal molecules 210 to cause a problem in the image quality of the liquid crystal display device 200.

The mixture may include a single monomer 316, but may include two or more types of monomers 316. [

Then, ultraviolet rays (UV) are irradiated to form the polymer partition walls 206.

Referring to FIG. 3D, due to ultraviolet irradiation, the liquid crystal and the monomer 316 are phase-separated, and the polymeric partition 316 is formed by the polymerization reaction between the monomers 316.

An example of the formation process of a polymer is as follows.

[Reaction Scheme 1]

                  (Reaction 1)

                    (Reaction 2)

(n is a natural number of 1 or more)

For example, in Scheme 1, the material of Chemical Formula 2 is given as an example, and the photoinitiator (I) becomes a radical by ultraviolet light irradiation to break the π bond of the acrylate functional group, (Reaction 1). The newly formed radical then continues to bond with the other molecules, forming a polymer (reaction 2).

The form of the polymer may be formed linearly as described in Scheme 1, and a plurality of monomers 316 of one carbon may be connected to include a polymeric branch.

Meanwhile, the pattern shape of the polymer partition wall 206 can be variously designed through a mask, and a mask in which a pattern is formed is placed on the upper or lower part of the liquid crystal display device 200, and ultraviolet rays are irradiated from the upper part or the lower part . In the region where the ultraviolet rays are irradiated, the monomers 316 undergo polymerization reaction to form the polymer partition 206 through the phase separation, and the liquid crystal 210 is separated and located in the region not irradiated with ultraviolet rays, i.e., the display region. The liquid crystal 210 is aligned in the liquid crystal filling region 208 in accordance with the alignment direction.

4 is a view showing cross-linking in a polymeric partition wall.

Referring to FIG. 4, as the polymer 418 is formed by polymerization of the monomer 316, functional groups of the monomer 316 that are not involved in the polymerization reaction within the same molecule or among other molecules form a crosslinking 420 can do.

For example, a condensation reaction between the acrylate functional groups may occur between the esters, and the crosslinking 420 may be formed between the other polymers 418, or may be formed in the same polymer 418.

Accordingly, since the polymeric partition wall 206 is formed more firmly than the polymeric partition wall 206, the polymeric partition wall 206 including the polymer 418 has improved rigidity and heat resistance. Further, the larger the number of functional groups, the more the crosslinking 420 can occur, which is advantageous in terms of rigidity and heat resistance.

FIG. 5A is a graph showing the results of a heat resistance test of a liquid crystal display device including a polymer barrier formed by polymerizing monomers having one functional group, and FIG. 5B is a graph showing the results of a heat resistance test of a liquid crystal display including a polymer barrier formed by polymerizing monomers having a plurality of functional groups Showing the result of the heat resistance test of the apparatus.

5A and 5B show a top view of the liquid crystal display panel 140 of the liquid crystal display device 200, wherein each monomer is a compound having an acrylate functional group, and the results obtained by applying heat of 70 DEG C over 1 hour, respectively FIG.

Referring to FIG. 5A, it can be seen that the width of the polymer partition wall 206 having one functional group is increased, and the shape is unclearly collapsed.

5B, when the polymer block walls 206 are formed by polymerizing the monomers 316 having a plurality of functional groups, there is no change in the width of the polymeric partition walls 206 and no change in shape is observed .

This indicates that the functional groups not participating in the polymerization form crosslinks 420, so that more rigid polymeric partition walls 206 are formed.

Although the embodiments have been described with reference to the drawings, the present invention is not limited thereto.

It is to be understood that the terms "comprises", "comprising", or "having" as used in the foregoing description mean that the constituent element can be implanted unless specifically stated to the contrary, But should be construed as further including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

202a: first substrate 202b: second substrate
204a: first alignment film 204b: second alignment film
206: polymer barrier rib 208: liquid crystal filling region
210: liquid crystal 316: monomer
420: Crosslinking

Claims (10)

A first substrate defined by a plurality of pixel regions;
A second substrate spaced apart from the first substrate;
A first alignment layer formed on one surface of the first substrate;
A second alignment layer formed on a surface of the second substrate facing the first surface of the first substrate;
A plurality of polymeric partition walls formed by polymerizing and cross-linking monomers having a plurality of functional groups between the first alignment layer and the second alignment layer; And
A liquid crystal located between the plurality of polymer walls;
And the liquid crystal display device. The method according to claim 1,
The monomer having a plurality of functional groups may be,
A liquid crystal display device characterized by being a compound represented by the following formula.
&Lt; Formula 1 >

[Wherein a and b are a natural number of 1 or more, A is an aryl group having 6 to 60 carbon atoms; A fluorenyl group; A heterocyclic group having 2 to 60 carbon atoms and containing at least one hetero atom selected from O, N, S, Si and P; A fused ring group of an aliphatic ring having 3 to 60 carbon atoms and an aromatic ring having 6 to 60 carbon atoms; An alkyl group having 1 to 50 carbon atoms; An alkenyl group having 2 to 20 carbon atoms; An alkynyl group having 2 to 20 carbon atoms; An alkoxyl group having 1 to 30 carbon atoms; An aryloxy group having 6 to 30 carbon atoms; 3. The method of claim 2,
When the aryl group, the fluorenyl group, the heterocyclic group, the fused ring group, the alkyl group, the alkenyl group, the alkynyl group, the alkoxyl group or the aryloxy group is further substituted with one or more substituents, halogen; A silane group; Siloxyl group; Boron group; Germanium group; Cyano; A nitro group; An alkylthio group having 1 to 20 carbon atoms; An alkoxyl group having 1 to 20 carbon atoms; An alkyl group having 1 to 20 carbon atoms; An alkenyl group having 2 to 20 carbon atoms; An alkynyl group having 2 to 20 carbon atoms; Having 6 to 20 carbon atoms An aryl group; An aryl group having 6 to 20 carbon atoms substituted with deuterium; A fluorenyl group; A heterocyclic group having 2 to 20 carbon atoms; A cycloalkyl group having 3 to 20 carbon atoms; An arylalkyl group having 7 to 20 carbon atoms, and an arylalkenyl group having 8 to 20 carbon atoms. 3. The method of claim 2,
Wherein A is substituted or unsubstituted, and is represented by one of the following formulas.
&Lt; Formula 2 >< EMI ID =

&Lt; Formula 4 &gt;&lt; EMI ID =

&Lt; Formula 6 >< EMI ID =

&Lt; Formula 8 &gt;&lt; EMI ID =

&Lt; Formula 10 >< EMI ID =

&Lt; Formula 12 &gt;

&Lt; Formula 13 &gt;&lt; EMI ID =

&Lt; Formula 16 >

(n, p, q is a natural number of 1 or more, provided that p + q = 3) The method according to claim 1,
Wherein the ratio of the monomer to the liquid crystal is 0.05 to 0.33. Forming a first adhesive layer on a first support substrate and forming a first substrate defined by a plurality of pixel regions on the first adhesive layer;
Forming a second adhesive layer on the second support substrate and forming a second substrate on the second adhesive layer;
Coating a first alignment layer on the first substrate;
Coating a second alignment layer on the second substrate;
Attaching the first substrate and the second substrate;
Injecting a mixture comprising a liquid crystal and a monomer having a plurality of functional groups between the first substrate and the second substrate;
Forming a crosslinked polymeric partition wall by polymerizing the monomer having the plurality of functional groups between the first alignment layer and the second alignment layer; And
Separating the first supporting substrate and the second supporting substrate;
And the second electrode is electrically connected to the second electrode. The method according to claim 6,
The monomer having a plurality of functional groups may be,
Is a compound represented by the following formula.
&Lt; Formula 1 >

[Wherein a and b are a natural number of 1 or more, A is an aryl group having 6 to 60 carbon atoms; A fluorenyl group; A heterocyclic group having 2 to 60 carbon atoms and containing at least one hetero atom selected from O, N, S, Si and P; A fused ring group of an aliphatic ring having 3 to 60 carbon atoms and an aromatic ring having 6 to 60 carbon atoms; An alkyl group having 1 to 50 carbon atoms; An alkenyl group having 2 to 20 carbon atoms; An alkynyl group having 2 to 20 carbon atoms; An alkoxyl group having 1 to 30 carbon atoms; An aryloxy group having 6 to 30 carbon atoms; 8. The method of claim 7,
When the aryl group, the fluorenyl group, the heterocyclic group, the fused ring group, the alkyl group, the alkenyl group, the alkynyl group, the alkoxyl group or the aryloxy group is further substituted with one or more substituents, halogen; A silane group; Siloxyl group; Boron group; Germanium group; Cyano; A nitro group; An alkylthio group having 1 to 20 carbon atoms; An alkoxyl group having 1 to 20 carbon atoms; An alkyl group having 1 to 20 carbon atoms; An alkenyl group having 2 to 20 carbon atoms; An alkynyl group having 2 to 20 carbon atoms; Having 6 to 20 carbon atoms An aryl group; An aryl group having 6 to 20 carbon atoms substituted with deuterium; A fluorenyl group; A heterocyclic group having 2 to 20 carbon atoms; A cycloalkyl group having 3 to 20 carbon atoms; An arylalkyl group having 7 to 20 carbon atoms, and an arylalkenyl group having 8 to 20 carbon atoms. 8. The method of claim 7,
Wherein A is substituted or unsubstituted, and is represented by one of the following formulas.
&Lt; Formula 2 >< EMI ID =

&Lt; Formula 4 &gt;&lt; EMI ID =

&Lt; Formula 6 >< EMI ID =

&Lt; Formula 8 &gt;&lt; EMI ID =

&Lt; Formula 10 >< EMI ID =

&Lt; Formula 12 &gt;

&Lt; Formula 13 &gt;&lt; EMI ID =

&Lt; Formula 16 >

(n, p, q is a natural number of 1 or more, provided that p + q = 3) The method according to claim 6,
In the step of injecting the mixture,
Wherein the ratio of the monomer to the liquid crystal is 0.05 to 0.33.

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