KR20050107965A - Optical retarder and method for manufacturing the same - Google Patents

Abstract

An optical phase modulator and its manufacturing method are disclosed. In the optical phase modulator, the surface of the substrate is oriented by irradiating an ion beam or a plasma beam onto the substrate in a vacuum state, and after the photocrosslinked liquid crystal is coated on the surface oriented substrate, light is irradiated to produce a polymer liquid crystal film. Produced by Since the optical phase modulation plate does not require a liquid crystal alignment film during its manufacture, the configuration is simple and manufacturing cost is greatly reduced. In addition, the overall quality, such as transmittance is superior to the optical phase modulation plate using a liquid crystal alignment film, and is less affected by the material of the substrate can be applied to both inside and outside the liquid crystal cell.

Description

Optical phase modulator and method for manufacturing same {Optical Retarder and Method for manufacturing the same}

The present invention relates to an optical phase modulation plate for performing an optical phase modulation function and a method for manufacturing the same, and more particularly, to an optical phase modulation plate including a polymer liquid crystal film and a manufacturing method thereof.

Three-dimensional stereoscopic imaging techniques can be broadly classified into a binocular stereoscopic technique and an autostereoscopic technique. In addition, the binocular disparity method uses a parallax image of the left and right eyes having the largest stereoscopic effect, and includes a glasses method and a glasses-free method.

In the spectacle method, the polarization direction of the left-right parallax image is changed or time-divisionally displayed on the direct-view display or the projector, and the three-dimensional stereoscopic image is viewed using the polarized glasses or the liquid crystal shutter glasses, respectively. In the polarizing glasses method, a convenient method of providing a large area liquid crystal shutter panel on the front of the display device has also been proposed.

The autostereoscopic method is generally provided with an optical plate such as a parallax barrier for separating the optical axis of the left and right parallax images in front of or behind the display screen. Although these methods generally have a very narrow effective field of view, and only one person can use them, they have been developed into a wide field of view based on a viewpoint tracking optical axis control method, and recently, a multi-view tracking method that can be viewed by multiple observers has also been attracting attention. .

The binocular parallax as described above has incomplete aspects such as inconsistency in focus / congestion point compared to the natural stereoscopic perception mechanism of human, and may cause disadvantages and visual fatigue in the use of glasses or image content.

The liquid crystal shutter method includes a stereoscopic image liquid crystal display device disclosed in Korean Patent Application No. 10-2001-0017482, and the patent discloses a technique for recognizing stereoscopic images with left and right eyes through liquid crystal shutter glasses. .

However, such a liquid crystal shutter glasses method has an issue that effective viewing is possible when the display speed is 100 Hz or more, and the opening and closing speed of the liquid crystal shutter glasses is fast.

On the other hand, Korean Patent Application No. 10-2001-0011617 discloses a technique for a three-dimensional image liquid crystal display device of the polarizing glasses method. The patent constitutes a display device having a plurality of micro-polarization regions, wherein the micro-polarization region is implemented as a polymer liquid crystal film to which a chiral dopant is added, which is separated into a region of a linear polarizing plate and a microdomain. It is done.

However, this method has three polarization states of red, green, and blue, so that the left and right screens recognized by both eyes of the polarizing glasses are not clearly separated, but slightly mixed, and the three-dimensional feeling is reduced, and the viewer is easily There is a problem of feeling tired.

In the stereoscopic imaging technology, an optical phase modulator using liquid crystal is often used. The optical phase modulator using a conventional liquid crystal is composed of a substrate 100, an alignment film 20 coated on the substrate 100 and subjected to surface alignment, and a liquid crystal coated and oriented on the alignment film. In addition, the liquid crystal is usually surface-aligned on the alignment layer 20 as a photoreactive liquid crystal, and then crosslinked and solidified by light irradiation such as ultraviolet rays to form a polymer liquid crystal film. The optical axis formed in accordance with the alignment direction of the liquid crystal in accordance with the surface alignment direction of the alignment layer 20 performs the optical phase modulation function.

At this time, the conventional alignment method is rubbing the alignment layer 20 using a roll 10 wound with a soft fabric, setting the surface alignment direction according to the rubbing direction, or irradiating the alignment layer with polarized ultraviolet rays or the like. It was common to set the surface orientation direction according to the polarization direction. 1 and 2 illustrate this approach, and FIG. 3 shows an optical phase modulation plate having an alignment film 20 manufactured in a conventional manner.

However, such a liquid crystal alignment layer has a disadvantage in that the optical phase modulation plate is included as a component, so that the light transmission efficiency and overall quality of the optical phase modulation plate are lowered and the cost is increased due to the high cost.

The technical problem to be achieved by the present invention is to propose an optical phase modulation plate that does not require a liquid crystal alignment film and a method of manufacturing the same. In addition, an optical phase modulation plate capable of minimizing eye fatigue by effectively stacking at least one polymer liquid crystal film on the optical phase modulation plate to change the polarization method of the stereoscopic image liquid crystal display device to improve stereoscopic feeling and clarity, and manufacturing thereof Is to present a way.

Another object of the present invention is to provide a three-dimensional image display device, an optical phase modulation parallel wall and a liquid crystal color filter using the optical phase modulation plate.

In order to achieve the above technical problem of the present invention

A substrate irradiated with an ion beam or a plasma beam emitted at a predetermined angle and subjected to surface alignment; And at least one polymer liquid crystal film layer formed on the substrate and formed by photoirradiating a photocrosslinked liquid crystal arranged in a predetermined direction.

The light for irradiating the liquid crystal may be ultraviolet rays.

The polymer liquid crystal film layer may be composed of a set of two or more surface regions having different alignment directions of liquid crystals, and the two or more surface regions may be irradiated with the ion beam or plasma beam by applying a mask having a predetermined pattern to the surface of the substrate. As a result, the photocrosslinkable liquid crystal may be arranged on the substrate that is surface aligned in different directions for each region of the substrate, and then the liquid crystal may be formed by light irradiation.

In addition, the polymer liquid crystal film layer preferably has a phase retardation characteristic of λ / (n + 1) (where n is an integer).

The polymer liquid crystal film layer may be irradiated with an ion beam or a plasma beam emitted at a predetermined angle to modify the surface of the film layer, and arrange a photocrosslinkable liquid crystal in a predetermined direction on the surface of the surface modified polymer liquid crystal film layer. Thereafter, the liquid crystal may further include a liquid crystal film layer oriented in a predetermined direction by causing a light crosslinking reaction by photoirradiating the liquid crystal, wherein the polymer liquid crystal film layer is composed of two liquid crystal film layers, The optical axis directions may be different from each other.

The liquid crystal may be any one or more selected from the group of liquid crystals having nematic, discotic and cholesteric properties, and the arrangement direction of the liquid crystal may have a predetermined pretilt angle with the substrate. It may be to achieve.

The substrate may be any one of a glass plate, a plastic plate, an organic plate, an inorganic plate, and a plate on which electrodes and pixels are formed for a flat panel display.

In order to achieve another object of the present invention, the optical phase modulation plate and

A stereoscopic image display device and a stereoscopic image display device for attaching a flat panel display device are provided.

In addition, an optical phase modulation parallel wall comprising a liquid crystal display device and a linear polarizing plate including the optical phase modulation plate in a liquid crystal cell is provided.

The optical phase modulation plate; A polarizer positioned on one surface of the optical phase modulation plate; a transparent substrate located on the other surface of the optical phase modulation plate; And a common electrode positioned on an opposite surface of the optical phase modulator of the transparent substrate.

The optical phase modulator is preferably any one selected from the group consisting of an optical phase modulator having a λ / 4 phase retardation characteristic and an optical phase modulator having a λ / 2 phase retardation characteristic.

In order to achieve another object of the present invention,

a) orienting the surface of the substrate by irradiating the ion beam or the plasma beam at a predetermined angle with respect to the normal direction of the substrate;

b) coating a photocrosslinkable liquid crystal on the surface oriented substrate; And

c) a photophase modulation plate manufacturing method comprising the step of irradiating light to the photocrosslinkable liquid crystal to produce a liquid crystal polymer film by photocrosslinking the liquid crystal.

In the above method, d) placing the optical phase modulation plate in a vacuum chamber and irradiating an ion beam or a plasma beam to the liquid crystal polymer film layer at a predetermined angle with respect to the normal direction of the liquid crystal polymer film layer to prepare a surface of the liquid crystal polymer film. Modifying;

b ') coating a photocrosslinked liquid crystal on the surface-modified liquid crystal polymer film; And

c ') presenting a photophase modulation plate manufacturing method further comprising the step of irradiating light including ultraviolet rays to the photocrosslinkable liquid crystal to photocrosslink the liquid crystal to produce a liquid crystal polymer film.

It provides an optical phase modulation plate manufacturing method further comprising the step of performing the steps d), b ') and c') at least once more on the optical phase modulation plate.

When irradiating the beam in the step a), by applying a mask of a predetermined pattern to the surface of the substrate to irradiate the beam, the optical phase modulation plate manufacturing, characterized in that the substrate is surface-oriented in a different direction for each predetermined region Give a way.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

The optical phase modulation plate has a structure in which the polymer liquid crystal film layer 200 is formed on one surface of the substrate 100. This structure is shown in detail in FIG.

In this case, when manufacturing the optical phase modulation plate, the alignment treatment of the substrate 100 is prioritized first. The alignment process of the substrate 100 is performed by irradiating an ion beam or a Plasman beam on the substrate 100. This process will be described with reference to FIG. 4.

An ion beam or plasma beam induces physical and chemical changes on the surface of an object by energy of the beam when it collides with an object to be irradiated. It has been widely used for surface modification. In the present invention, the surface of the substrate 100 is modified by using the surface modification characteristics of the ion beam or the plasma beam to align the liquid crystal. The ion beam or plasma beam equipment used in the present invention includes an ion or plasma source unit, a discharge unit emitting the same, and a beam collimating unit where the beam reaches the target and is irradiated. . At this time, the source may be at least one selected from the group consisting of Ar, He, Ne, He, Xe, Kr, N2, O2, CO and SF3.

Irradiation of the beam is preferably performed in a vacuum state, the substrate 100 is a transparent or opaque plastic or a flat panel display made of inorganic and organic materials, including glass, etc., the substrate 100 and the like formed with electrodes and pixels This may be the material of the substrate 100 of the present invention. When the beam is irradiated, the inclination angle may be varied from 0 degrees to 90 degrees with respect to the surface of the substrate 100, but 30 to 60 is preferable.

The inclination direction of the beam becomes the liquid crystal array director by the irradiation of the beam, and the inclination angle determines a pretilt angle of the arranged liquid crystal with the surface of the substrate 100. 5 illustrates a process in which a liquid crystal has an optical axis at a predetermined angle when light is irradiated onto the substrate 100 of the present invention at a predetermined angle.

In this case, when irradiating the ion beam or the plasma beam to the substrate 100, a mask having a predetermined pattern may be used to irradiate different directions for each region of the substrate 100. In this case, an advantageous effect of varying the direction of arrangement of the liquid crystals coated thereon for each region occurs.

Subsequently, the photocrosslinkable liquid crystal may be coated on the surface of the alignment-treated substrate 100. In this case, any one or more of liquid crystals having nematic characteristics, discotic characteristics, cholesteric characteristics, or the like may be used. 11 and 12 are conceptual views relating to the arrangement of the discotic liquid crystal and the cholesteric liquid crystal, respectively, and it can be seen how the liquid crystals having the respective characteristics are arranged in the respective figures.

The liquid crystals on the surface of the alignment-treated substrate 100 may be arranged in a predetermined direction, and may be formed into a polymer film having a predetermined optical axis along the liquid crystal array direction by irradiating light to the liquid crystals after the alignment. In this case, the optical phase modulation characteristics are changed according to the thickness of the coated liquid crystal and the refractive index anisotropy of the liquid crystal. And the liquid crystal layer formed in this way generally has a thickness of several micrometers or less.

In this case, the liquid crystal may be diluted in a solvent and used for coating, and the solvent is evaporated through a drying process. The coating method may be spin coating, roll coating, dispensing coating, or gravure coating, and the like, and the type and dilution ratio of the solvent are generally determined by the coating method.

When the photocrosslinkable liquid crystals arranged on the substrate 100 are irradiated with light such as ultraviolet rays to photocrosslink the liquid crystals, a liquid crystal polymer film having a predetermined optical axis and having optical phase modulation characteristics is formed.

When it is necessary to modify the surface of the polymer liquid crystal film, the polymer liquid crystal film may be placed in the vacuum chamber 44 and the beam may be irradiated. In this case, the intensity of the beam may be different from that irradiated onto the substrate 100. Subsequently, the photocrosslinkable liquid crystal is coated again on the surface-modified polymer liquid crystal film, and the polymer liquid crystal film layer 200 may be formed by photocrosslinking the liquid crystal by irradiating ultraviolet rays.

Through the above process, the optical phase modulation plate of the present invention without the alignment layer as shown in FIG. 6 is manufactured.

At this time, the above series of steps may be repeated to stack two or more polymer liquid crystal films continuously.

The optical phase modulator of the present invention has various optical phase modulation characteristics of λ / (n + 1) (n = integer) according to the refractive index anisotropy of the photocrosslinkable liquid crystal and the thickness of the coated film. The polymer liquid crystal film having such optical phase modulation characteristics may be variously applied. That is, the polymer liquid crystal configured to vary the optical inclination or the pretilt angle of the liquid crystal by regions according to the optical axis determined according to the number of layers and the phase change characteristics of the polymer liquid crystal film, and the optical axis determined according to the liquid crystal array direction. The film may be applied to various fields through various combinations such as different pretilt angles of optical axes or liquid crystals for each layer of the film.

First, a compensation film is mentioned as such an application. A detailed description will be given below with reference to FIGS. 7 to 10.

Conventional compensation film is a negative c plate used in LCDs using a vertical alignment mode, which draws a transparent polymer film in two different axes to impart phase retardation in the stretched axis direction. To compensate for the viewing angle characteristics of the LCD using the vertical culture mode.

As a compensation film of the present invention, the negative C plate made of a polymer liquid crystal film having two layers of the polymer liquid crystal films 210a and 210b and having a viewing angle compensation effect similar to that of conventional biaxial stretching by varying optical axes of each layer. (negative c plate) is possible. FIG. 7 shows that an optical axis 510b is formed in a horizontal direction of the first polymer liquid crystal film, and an optical axis 510a is formed in a vertical direction of the second polymer liquid crystal film. The polymer liquid crystal films 210a and 210b having such a predetermined optical axis may be stacked in two or more layers as necessary.

In addition, when applying such a compensation film to the LCD there is an advantage that can be selectively formed on the outer surface or the inner surface of the liquid crystal cell as needed. 8 illustrates an LCD in which a liquid crystal polymer film is formed on an outer surface of a liquid crystal cell, and FIGS. 9 and 10 illustrate an LCD in which a liquid crystal polymer film is formed on an inner surface of a liquid crystal cell.

In addition, when a polymer cross-linked discotic (discotic) liquid crystal array or a polymer liquid crystal film having a predetermined pretilt angle in a single layer or a multi-layer can be used as a wide viewing angle compensation film of the LCD using the horizontal alignment mode. 11 illustrates a state in which discotic liquid crystals 310 are arranged.

In addition, when the polymer liquid crystal film in which the photocrosslinkable cholesteric liquid crystals are arranged in a single layer or multiple layers, the polymer liquid crystal film may be used as a functional optical film used for the purpose of color compensation and luminance improvement. 12 illustrates a state in which cholesteric liquid crystals 320 are arranged.

Another application of the present invention is a patterned phase retardation plate for spectacles three-dimensional stereoscopic image display. Hereinafter, a detailed description will be given with reference to FIGS. 13 to 14.

In general, a stereoscopic image display recognizes different images in the left and right eyes, or focuses two images on a space in consideration of the distance between the left and right eyes, thereby making a user feel a stereoscopic reality such as the depth of the image contents.

In the case of an optical stereoscopic image display device, the left eye and the right eye are 90 degree cross polarized images with each other and polarized glasses having two polarized lenses (or polarizers) 90 degree cross polarized with each other are separately recognized for both eyes. To feel.

In general, since the emitted light of the LCD is polarized light, the light is divided into A and B areas, and the A area forms an optical axis of the optical phase modulator to maintain the outgoing polarization direction, and the B area diffracts the outgoing polarization by 90 degrees. The optical axis of the optical phase modulation plate may be formed to emit images 90 degrees cross-polarized with each other.

In this case, the optical axis of the optical phase modulation plate may be the same as the polarization direction 510a in order to maintain the emission polarization direction, and the emission polarization in the case of the λ / 2 optical phase modulation plate in order to diffract the emission polarization 90 degrees (clockwise). In the case of 45 degrees (clockwise) with respect to λ / 4, the optical phase modulation plates each having 22.5 degrees and 67.5 in the clockwise direction with respect to the outgoing polarization may be constituted by the multilayer layers 210a and 210b. In addition, various angle configurations and various multilayer configurations for such polarization diffraction and retention may be possible.

In addition, in the case of PDP, EL, and FED where the outgoing light is not polarized light, the optical stereoscopic image display may be configured by attaching the optical phase modulation plate and the polarizing film 410 to the surface of the display device. In this case, when the emitted light is light that is not polarized light, since the light is polarized when passing through the polarizing film 410, when the polarizing film 410 is combined with the optical phase modulation plate, the optical phase modulation used in the LCD It will have the same effect as the plate. FIG. 14 illustrates a case where an optical phase modulation plate having a polymer liquid crystal film layer 200 having a phase retardation of λ / 2 is used, and FIG. 15 illustrates two layers 210a, in which a polymer liquid crystal film having a phase retardation of λ / 4 is used. 210b) shows an operating aspect of the optical phase modulation plate which is present in the form of a phase delay of? / 2 as a whole.

Another application of the present invention is a patterned phase retardation plate for autostereoscopic 3D stereoscopic image display. A detailed description will be given below with reference to FIGS. 15 and 16.

In the case of an autostereoscopic 3D stereoscopic image display using an optical phase modulator, a retarder parallax barrier composed of an optical phase modulator and an additional linear polarizer may be used.

By passing the polarized light emitted from the LCD through the polymer liquid crystal film formed by dividing the optical axis into the A and B areas, and passing it through the linear polarizer again, the autostereoscopic 3D stereoscopic LCD is enabled by the parallel barrier effect of the two areas. do. At this time, the area A has the same polarization as the emission polarization (220a), and the area B is the phase retardation plate having a phase delay characteristic of λ / 2, for example, with respect to the emission polarization. ) Is formed, and in the case of λ / 4, the polymer liquid crystal film is formed as the multilayer layers 210a and 210b to appropriately adjust the optical axis to give the same effect.

In addition, the optical phase modulator and the polarizing film may be combined to form a stereoscopic image display for surface attachment such as PDP, EL, FED, etc., in which the emitted light is not polarized.

In addition, when λ / 2 of one layer is used in the polarization diffraction by the optical phase modulation plate, it is difficult to uniformly diffract red, green, and blue emitted from the display, such that screen mixing or moire may occur. However, polarization diffraction using a multilayer phase modulation plate having λ / (n + 2) (n = integer) characteristics of one or more layers, such as a two-layer λ / 4 optical phase modulator, can compensate for the above disadvantages. Can be.

The optical phase modulation plate for a stereoscopic image display described above may be attached to a front surface of an existing display to perform a function. In addition, in the case of LCD, the patterned optical phase modulation plate for the stereoscopic image may be selectively applied to the inner surface or the outer surface of the liquid crystal cell. In the case of applying to the inner surface, it is necessary to use an in-cell polarizer together because the output polarizer should be mounted on the inner surface of the cell.

When the patterned optical phase modulation plate is embedded in the cell, the light path can be reduced by the thickness of the front glass, so the viewing angle is widened, and the mixing phenomenon of each image recognized in the left and right is reduced.

Another application of the present invention is a transflective semi-reflective liquid crystal display. Hereinafter, a description will be given with reference to FIGS. 17 and 18.

In this case, the λ / 2 or λ / 4 photophase modulation plate positioned between the common electrode 500 and the polarizer 410 may be directly formed on the inner surface or the outer surface of the substrate 100 using the polymer liquid crystal film 250. It is also possible to implement a more clear optical characteristics by configuring the optical phase modulator plate in multiple layers.

In addition, the phase modulation plate of the present invention can be inserted or included in various configurations of the LCD in addition to the above-described examples due to the advantage that does not require a conventional alignment film, and can be applied to various optical tools other than the flat panel display.

Since the optical phase modulation plate using the polymer liquid crystal film of the present invention does not require a liquid crystal alignment layer at the time of its manufacture, its configuration is simple and significant cost reduction is possible. In addition, compared to the optical phase modulation plate using the liquid crystal alignment layer, the overall quality such as transmittance is also excellent, and since it is less affected by the material of the substrate 100, the application range is wide such that it can be applied to both inside and outside of the liquid crystal cell.

FIG. 1 is a conceptual diagram of an alignment layer forming process through rubbing of a conventional roll method.

2 is a conceptual diagram of a conventional optical alignment method.

3 is a conceptual diagram of a photophase modulation plate having a conventional alignment film.

4 is a conceptual diagram of a method for irradiating light to a substrate of the present invention.

5 is a conceptual diagram of a method for irradiating light to a substrate of a present invention at a predetermined angle.

6 is a conceptual diagram of an optical phase modulator of the present invention.

7 is a conceptual diagram of a negative c plate made of a polymer liquid crystal film having an optical axis formed thereon.

8 is a conceptual diagram of an LCD in which a liquid crystal polymer film is formed on an outer surface of a liquid crystal cell.

9 and 10 are conceptual views of an LCD in which a liquid crystal polymer film is formed on an inner surface of a liquid crystal cell.

11 is a conceptual diagram of an arrangement of discotic liquid crystals.

12 is a conceptual diagram of an arrangement of cholesteric liquid crystals.

FIG. 13 is a conceptual diagram illustrating an operating principle of an eyeglass type stereoscopic image display apparatus employing a polymer liquid crystal film having lambda / 4 phase modulation characteristics.

FIG. 14 is a conceptual diagram illustrating an operating principle of an eyeglass type stereoscopic image display apparatus employing a polymer liquid crystal film having lambda / 2 phase modulation characteristics.

15 is a conceptual diagram illustrating an operating principle of an autostereoscopic 3D display device employing a polymer liquid crystal film having a lambda / 2 phase modulation characteristic and a polarizer.

FIG. 16 is a conceptual diagram illustrating an operating principle of an autostereoscopic 3D display device including a polymer liquid crystal film having a λ / 4 phase modulation characteristic and a polarizer.

17 is a conceptual diagram of a transflective semi-reflective liquid crystal display having a lambda / 2 phase modulation characteristic.

18 is a conceptual diagram of a transflective semi-reflective liquid crystal display having a lambda / 4 phase modulation characteristic.

*** Description of the main parts of the drawings ***

10 roller 20 alignment film

41: beam light source 43: ion beam or plasma beam

44: vacuum chamber 50: ultraviolet

100: substrate 200: polymer liquid crystal film layer

210a, 210b: polymer liquid crystal film 220a: horizontal polarization direction display

220b: vertical polarization direction display 250: λ / 2 polarizing plate

260: lambda / 4 polarizing plate 300: liquid crystal

310: liquid crystal layer 410: polarizer

420: color filter substrate 430: alignment film

440: array substrate 450: backlight unit

500: common electrode 510: reflective electrode

510a, 510b, 510c, 510d: optical axis / polarization direction display

520 passivation layer

530: transparent electrode 540: prism sheet

550: backlight light source 560: liquid crystal of the liquid crystal layer

Claims (19)

A substrate irradiated with an ion beam or a plasma beam emitted at a predetermined angle and subjected to surface alignment; And And at least one polymer liquid crystal film layer formed on the substrate and formed by photoirradiating a photocrosslinked liquid crystal arranged in a predetermined direction. The method of claim 1, The light for modulating the liquid crystal light is an optical phase modulation plate, characterized in that the ultraviolet. The method of claim 1, The polymer liquid crystal film layer is an optical phase modulation plate, characterized in that composed of a set of two or more surface areas different in the arrangement direction of the liquid crystal. The method of claim 3, wherein The at least two kinds of surface regions are formed by arranging a photocrosslinkable liquid crystal on the substrate that is surface-oriented in a different direction for each region of the substrate by applying a mask of a predetermined pattern to the surface of the substrate and irradiating the ion beam or the plasma beam. And a light phase modulating plate formed by light irradiation the liquid crystal. The method of claim 1, The polymeric liquid crystal film layer has a phase retardation characteristic of λ / (n + 1), where n is an integer. The method of claim 1, The polymer liquid crystal film layer may be irradiated with an ion beam or a plasma beam emitted at a predetermined angle to modify the surface of the film layer, and arrange a photocrosslinkable liquid crystal in a predetermined direction on the surface of the surface modified polymer liquid crystal film layer. Thereafter, the liquid crystal film layer further comprises a liquid crystal film layer oriented in a predetermined direction by causing a photocrosslinking reaction by performing light irradiation treatment of the liquid crystal. The method of claim 1, The polymer liquid crystal film layer is composed of two liquid crystal film layers, the optical phase modulation plate, characterized in that the optical axis direction of each liquid crystal film layer is different from each other. The method of claim 1, The liquid crystal is an optical phase modulation plate, characterized in that any one or more selected from the group of liquid crystals having nematic (discotic) and cholesteric (cholesteric) properties. The method of claim 1, And an arrangement direction of the liquid crystal forms a predetermined pretilt angle with the substrate. The method of claim 1, The substrate is an optical phase modulation plate, characterized in that any one of the glass plate, plastic plate, organic plate, inorganic plate and plate formed with electrodes and pixels for use in flat panel display. An optical phase modulator as described in any one of claims 1 to 10; And 3D image display device comprising a polarizing film. An optical phase modulator as described in any one of claims 1 to 10; And And a polarizing film; and a stereoscopic image display device for attaching a flat panel display device. A liquid crystal display device comprising an optical phase modulator as described in any one of claims 1 to 10 inside a liquid crystal cell; And A linear phase modulation parallel wall comprising a; linear polarizing plate. An optical phase modulator as described in any one of claims 1 to 10; A polarizer positioned on one surface of the optical phase modulation plate; A transparent substrate positioned on the other surface of the optical phase modulation plate; And And a common electrode positioned on an opposite surface of the optical phase modulation plate of the transparent substrate. The method of claim 14, And the optical phase modulation plate is any one selected from the group consisting of an optical phase modulation plate having a λ / 4 phase retardation property and an optical phase modulation plate having a λ / 2 phase retardation property. a) orienting the surface of the substrate by irradiating the ion beam or the plasma beam at a predetermined angle with respect to the normal direction of the substrate; b) coating a photocrosslinkable liquid crystal on the surface oriented substrate; And c) irradiating light to the photocrosslinkable liquid crystal to photocrosslink the liquid crystal to produce a liquid crystal polymer film. The method of claim 16, d) modifying the surface of the liquid crystal polymer film by placing the optical phase modulation plate in a vacuum chamber and irradiating an ion beam or a plasma beam to the liquid crystal polymer film layer at a predetermined angle with respect to the normal direction of the liquid crystal polymer film layer; ; b ') coating a photocrosslinked liquid crystal on the surface-modified liquid crystal polymer film; And c ') further comprising manufacturing a liquid crystal polymer film by irradiating the photocrosslinked liquid crystal with light including ultraviolet rays to photocrosslink the liquid crystal. The method of claim 17, And further performing the steps d), b ') and c') on the optical phase modulation plate at least one or more times. The method of claim 16, When irradiating the beam in the step a), by applying a mask of a predetermined pattern to the surface of the substrate to irradiate the beam, the optical phase modulation plate manufacturing, characterized in that the substrate is surface-oriented in a different direction for each predetermined region Way.