KR20090012719A - Light control film and method of manufacturing the same - Google Patents

Abstract

A light control film which does not increase the manufacturing cost and facilitates control of the viewing angle while minimizing moire phenomenon is provided, and a method of manufacturing the light control film is provided. A light control film comprises: a first film layer(400) and a second film layer(600); and a light control layer formed between the first film layer and second film layer. The light control layer is formed in a configuration in which a transparent material layer(300a) and a translucent material layer(500a) are repeated, the translucent material layer is horizontally arranged on one side of the first film layer and second film layer, and a pitch between the translucent material layers is 70 mum or less.

Description

Light control film and method of manufacturing the same

The present invention relates to a light control film that can be used in a display device, and more particularly, to a light control film for narrowing a viewing angle of a display device.

Recently, various types of display devices, such as a cathode ray tube (CRT), a liquid crystal display (LCD), a plasma display panel (PDP), and an organic light emitting diode (Luminescent Diode), have been developed and developed. Such various types of display apparatuses are applied for displaying images of various products such as computers, mobile phones, ATMs, and navigation systems of vehicles according to their unique characteristics.

The display apparatus serves to display information desired by a user as an image, and a display apparatus having a wide viewing angle is generally developed to enable a user to view an image displayed on the display apparatus at various angles.

However, when the viewing angle is wide for each individual product to which the display device is applied, there may be a case that adversely affects product characteristics, and in some cases, a user may require a narrow viewing angle.

For example, the ATM of the bank is required to prevent other people around from viewing the personal information when the user enters the personal information, so it is preferable that the viewing angle of the display device is narrow, and the navigation of the vehicle is rather preferable. In the case of the system, when the viewing angle of the display device is wide, light may be reflected on the window of the vehicle during night driving, which may adversely affect the driver's safety driving.In the case of a computer or a mobile phone, when the user does not want to expose personal privacy The wide viewing angle of the display device is contrary to the needs of the user.

As such, the display apparatus is generally manufactured to have a wide viewing angle, but it is required to have a narrow viewing angle according to the applied product. Therefore, it is necessary to manufacture the display device by adjusting the viewing angle to fit the product to be applied, but when manufacturing the display device according to the product as described above, productivity is reduced, so that the application after manufacturing the display device having a wide viewing angle A method of narrowing the viewing angle has been devised in accordance with a product to be made. Accordingly, an optical control film that can be attached to the display surface of the display device to narrow the viewing angle has been developed.

Hereinafter, a light control film for narrowing the viewing angle of a conventional display device will be described with reference to the drawings.

Figure 1a is a perspective view showing a light control film according to a conventional embodiment, Figure 1b is a perspective view showing a method for manufacturing a light control film according to a conventional embodiment.

As can be seen in Figure 1a, the light control film 10 according to the conventional embodiment has a structure in which the transparent material layer 11 and the opaque material layer 12 is repeated. In particular, the transparent material layer 11 and the opaque material layer 12 is a structure that is repeated in a horizontal state on one side (10a) of the film (10).

As can be seen in FIG. 1B, the light control film 10 is formed by repeatedly stacking the transparent material layer 11 and the opaque material layer 12 and then cutting the laminate in a direction perpendicular to the stacking direction. Are manufactured.

The light control film 10 has a property that light is refracted or absorbed in the opaque material layer 12 to transmit light only at a specific angle, and the light control film 10 is attached to the display surface of the display device. As a result, the viewing angle of the light emitted from the display device may be limited to a specific angle desired by the user.

However, there is a problem in that a moire phenomenon occurs when the conventional light control film 10 is attached to the display surface of the display device and used.

The moiré phenomenon is a phenomenon in which a ripple pattern is repeatedly generated on a screen, and light interference between the pixel structure of the display device and the repeating structure of the transparent material layer 11 and the opaque material layer 12 constituting the light control film 10. This is what happens.

Therefore, there has been a study on a method for reducing such a moire phenomenon, and accordingly a light control film having a structure as shown in FIG. 2a has been developed.

Figure 2a is a perspective view showing a light control film according to another conventional embodiment, Figure 2b is a perspective view showing a method for manufacturing a light control film according to another conventional embodiment.

As can be seen in Figure 2a, the conventional light control film 20 according to another embodiment is made of a combination of the first film 21 and the second film 22. The first film 21 and the second film 22 have a structure in which the transparent material layer 24 and the opaque material layer 26 are repeated. In particular, the transparent material layer 24 and the opaque material layer 26 are repeated inclined at a predetermined angle with respect to one side 21a of the first film 21 and one side 22a of the second film 22. An angle at which the transparent material layer 24 and the opaque material layer 26 are inclined in the first film 21 and an angle at which the transparent material layer 24 and the opaque material layer 26 are inclined in the second film 22. Are made in opposite directions.

As shown in FIG. 2B, the first film 21 constituting the light control film 20 is repeatedly laminated with the transparent material layer 24 and the opaque material layer 26 and cut in a direction perpendicular to the stacking direction. After the film 23 is manufactured in the form of a film 23, the periphery 23a of the manufactured film 23 is cut to form the transparent material layer 24 and the opaque material layer 26 on one side 21a of the first film 21. It is manufactured by a process of being configured to be inclined at a predetermined angle at. The second film 22 constituting the light control film 20 has an inclination angle between the transparent material layer 24 and the opaque material layer 26 in the manufacturing process of the first film 21. ) Is manufactured by the same process as the above-described manufacturing process of the first film 21 except forming in the opposite direction.

In the case of using the light control film 20, the pixel structure of the display device and the repeating structure between the transparent material layer 24 and the opaque material layer 26 of the first film 21 and the second film 22. Since a predetermined angle is formed in, the interference of light is reduced compared to the light control film 10 according to FIG. 1A, and eventually, the moiré phenomenon is reduced.

However, such a light control film 20 has the following problems.

First, in the manufacturing process of the light control film 20, the transparent material layer 24 and the opaque material layer 26 are predetermined on one side 21a of the first film 21 and one side 22a of the second film 22. Since the predetermined peripheral portion 23a of the film 23 is removed in order to be configured to be inclined at an angle of, the manufacturing cost increases.

Second, the display device because the transparent material layer 24 and the opaque material layer 26 are inclined at a predetermined angle to one side 21a of the first film 21 and one side 22a of the second film 22. The viewing angle of the light emitted from the tilt (Tilt) has a problem that it is difficult to precisely adjust the viewing angle.

As such, the light control film may be configured to narrow the viewing angle of the display device so that the display device can be applied to various products, but the light control films 10 and 20 conventionally designed have respective problems. The development of a new light control film that can solve the problem is required.

The present invention is to meet the requirements as described above, it is an object of the present invention to provide a method for manufacturing a light control film is easy to adjust the viewing angle without increasing the manufacturing cost, while minimizing the moiré phenomenon.

It is another object of the present invention to provide a light control film which is easy to adjust the viewing angle without increasing the manufacturing cost while minimizing the moiré phenomenon.

In order to achieve the above object, the present invention is a process for producing a mold having a plurality of grooves are repeated at a predetermined interval; Filling a first material into the plurality of grooves; Forming a first film layer on the mold including the first material; Separating the first film layer and the first material from the mold; Filling a second material in a region between the first materials on the first film layer; And it provides a light control film manufacturing method comprising the step of forming a second film layer on the first material and the second material.

The process of manufacturing the said mold includes the process of preparing the master of a predetermined pattern; Forming a metal plating layer on the master of the predetermined pattern; And separating the metal plating layer from the master to obtain a mold including the metal plating layer.

Preparing a master of the predetermined pattern includes forming a photoresist layer on a substrate; And irradiating and developing light onto the photoresist layer through a mask having a predetermined pattern to form a predetermined photoresist pattern.

The process of preparing a master of the predetermined pattern may include forming a laser processing layer on a substrate; And forming a predetermined pattern by laser scribing the laser processing layer.

In order to achieve the above another object, the present invention includes a first film layer and a second film layer; And

And a light control layer formed between the first film layer and the second film layer, wherein the light control layer has a structure in which a transparent material layer and an opaque material layer are repeated, and the opaque material layer is formed of the first film layer. It is arranged horizontally on one side of the first film layer and the second film layer, the pitch between the opaque material layer provides a light control film, characterized in that less than 70㎛.

Such features of the present invention are as follows.

The first feature of the present invention is that the opaque material layer is repeatedly configured in a horizontal state on one side of the film.

As such, by repeatedly configuring the opaque material layer in a horizontal state on one side of the film, which is a problem occurring in the conventional light control film 20 in which the opaque material layer as shown in FIG. 2A is inclined on one side of the film. To solve the problem that the viewing angle is difficult to adjust and the manufacturing cost increase by removing a predetermined peripheral portion of the film.

A second feature of the present invention is that the pitch between the layers of the opaque material constituting the light control film is finely formed to 70 μm or less.

Thus, by forming the pitch between the opaque material layer finely 70㎛ or less, the moiré phenomenon occurs when applying the conventional light control film 10 as shown in FIG.

The moiré phenomenon is caused by the interference of light generated by overlapping the pitch pattern between the BM (Black Matrix) defining pixels of the display device and the opaque material layer of the light control film. By minimizing the pitch pattern between the layers of opaque material, the interference of light is reduced to minimize the moiré phenomenon. This will be described in more detail with reference to the drawings.

FIG. 3 is a graph showing how a moiré interference wavelength is changed by a pitch pattern between BMs (Black Matrix) defining pixels of a display device and a pitch pattern between opaque material layers of a light control film.

When the pitch range between the opaque material layers of the light control film is solved to solve the problem of the moiré interference wavelength at the smallest pitch pattern among the pitch patterns between the BMs (Black Matrix) that define the pixels of the display device, most display devices The problem of moiré interference wavelength can be solved. In the case of the HD display of the current display device generally has a resolution of 1920 × 1080, the screen size of the 15-inch display device having such a resolution is 332mm × 187mm in width × height, and when such a screen size The pitch between BMs (Black Matrixes) defining pixels is 170 μm.

Therefore, since the smallest pitch is 170 µm as the pitch between BMs (Black Matrix) defining pixels in the current display device, in this case, the opaque material layer of the light control film can be solved at the consumer level to solve the problem of the interference wavelength between the moire. When the pitch pattern is set, the problem caused by the moiré interference wavelength is solved in most display devices on the market.

FIG. 3 illustrates the change of the moiré interference wavelength as the pitch pattern between the opaque material layers of the light control film is changed when the pitch between BMs (Black Matrix) defining pixels is 170 μm. In FIG. 3, the X axis represents the pitch between the opaque material layers of the light control film, and the Y axis represents the moiré interference wavelength.

In FIG. 3, the smaller the moiré interference wavelength, the smaller the problem of moiré interference wavelengths recognized by the consumer. In general, when the moiré interference wavelength is less than 1 mm, it is difficult to recognize the moiré interference wavelength at the consumer level. It will be resolved.

As can be seen in Figure 3, when the pitch between the opaque material layer of the light control film is about 70㎛ the moiré interference wavelength is generated about 1mm in the specific harmonic (harmonic) component, in the present invention, the opaque material layer of the light control film The pitch of the liver is formed to be 70 μm or less so that the moiré interference wavelength is smaller than 1 mm in certain harmonic components.

A third feature of the present invention is to devise a new manufacturing method in order to finely form the pitch between the opaque material layer of the light control film to 70㎛ or less.

When the light control films 10 and 20 are manufactured by the lamination and cutting process as described above with reference to FIGS. 1B and 2B, it is difficult to form the transparent material layer and the opaque material layer at a fine pitch due to the limitation of the lamination process. . Therefore, in the present invention, instead of the lamination process, a micro pattern master is manufactured using a photolithography process and the like, and a mold of the micro pattern is manufactured using the micro pattern master. By forming a structure in which the transparent material layer and the opaque material layer are repeated, the pitch between the opaque material layers of the finally obtained light control film can be made finer than 70 μm.

According to the present invention as described above has the following effects.

First, by repeatedly configuring the opaque material layer in a horizontal state on one side of the film, it is easy to adjust the viewing angle, and the problem of manufacturing cost increase due to removing a predetermined peripheral portion of the film is solved.

Second, a light control film obtained by manufacturing a fine pattern master through a photolithography process, a fine pattern mold using a fine pattern master, and then manufacturing a light control film using a fine pattern mold The pattern of the transparent material layer and the opaque material layer can be refined.

Third, the moiré phenomenon is minimized by forming the pitch between the opaque material layers finely below 70 μm.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings.

<Method of manufacturing light control film>

4A to 4J are cross-sectional views illustrating a manufacturing process of a light control film according to an embodiment of the present invention.

First, as shown in FIG. 4A, the photoresist layer 110 is formed on the substrate 100. Glass may be used as the substrate 100.

Next, as shown in FIG. 4B, light is irradiated onto the photoresist layer 110 formed on the substrate 100 through a mask 120 having a predetermined pattern.

The mask 120 of the predetermined pattern is provided with a light transmitting region 120a and a light blocking region 120b repeatedly, so that only the light passing through the light transmitting region 120a is irradiated onto the photoresist layer 110. Will be.

Next, as can be seen in FIG. 4C, the light irradiated photoresist layer 110 is developed to manufacture a master 130 provided with a predetermined photoresist pattern 110a on the substrate 100. .

By the developing process, the photoresist layer in the region irradiated with light is removed and the photoresist layer in the region not irradiated with light is not removed, thereby forming a predetermined photoresist pattern 110a.

A photoresist having a characteristic in which the light irradiated area is removed by a developing process is called a positive photoresist, whereas a photoresist having a characteristic in which an unirradiated area is removed by a developing process is negative. A) photoresist. Accordingly, the figure shows a case where a positive photoresist is applied, and it is also possible to form a predetermined photoresist pattern by applying a negative photoresist.

In the case of applying the negative photoresist, the photoresist pattern 110a as shown in FIG. 4C may be formed only when the light transmitting region 120a and the light blocking region 120b are formed opposite to each other in the mask 120 pattern of FIG. 4B.

By applying the photolithography process using the photoresist layer as described above, it is possible to manufacture the master 130 of the fine pattern.

On the other hand, although not shown, it is also possible to form a laser processing layer on a substrate, and to manufacture a master having a predetermined pattern by laser scribing the laser processing layer. In addition, if it is possible to form a fine pattern, the master may be manufactured through a printing method such as screen printing.

Next, as shown in FIG. 4D, the metal plating layer 200a is formed on the master 130 including the substrate 100 and the photoresist pattern 110a.

The metal plating layer 200a may be formed by electroforming, and nickel may be used as the metal. The metal plating layer 200a is formed in a pattern opposite to that of the master 130.

Next, as shown in FIG. 4E, the metal plating layer 200a is separated from the master 130 to manufacture a mold 200 having a plurality of grooves 210 repeated at predetermined intervals.

As described above, since the master 130 of the micropattern is manufactured through the photolithography process, and the mold 200 is manufactured using the master 130 of such a micropattern, the manufactured mold 200 The plurality of grooves 210 pattern is also formed in a fine structure.

In addition, it is possible to refine the pitch between the opaque material layer of the finally obtained light control film by repeatedly forming the transparent material layer and the opaque material layer by using the mold 200 of such a fine pattern in the process described later.

In the drawing, the width W of the plurality of grooves 210 of the mold 200 is greater than the distance D between the plurality of grooves 210 depending on the pattern of the master 130. Shown. However, by changing the pattern of the master 130, it is also possible to form the width (W) of the plurality of grooves 210 smaller than the distance (D) between the plurality of grooves 210, Therefore, it is also possible to form both in the same way.

As such, the width W of the plurality of grooves 210 and the distance D between the plurality of grooves 210 may fill the plurality of grooves 210 with a transparent material or an opaque material in a process to be described later. It depends on whether you charge it.

Next, as shown in FIG. 4F, the first material 300 is filled in the plurality of grooves 210 of the mold 200.

As the first material 300, a transparent material may be used, or an opaque material may be used.

In particular, as shown in FIG. 4E, when the width W of the plurality of grooves 210 of the mold 200 is greater than the distance D between the plurality of grooves 210, the first portion of FIG. Transparent material is used as the material 300. However, when the width W of the plurality of grooves 210 of the mold 200 is smaller than the distance D between the plurality of grooves 210, the opaque material is referred to as the first material 300 in FIG. 4F. When the width W of the plurality of grooves 210 of the mold 200 is equal to the distance D between the plurality of grooves 210, the first material 300 is illustrated in FIG. 4F. You can use transparent or opaque materials.

UV-curable resin may be used as the first material 300. Specifically, when the first material 300 is a transparent material, a UV curable resin such as an acrylic resin is used, and when the first material 300 is an opaque material, carbon black is used on the UV curable resin such as an acrylic resin. A mixture added with a black pigment such as may be used.

In the process of filling the plurality of grooves 210 of the mold 200 with the first material 300, the entirety of the first material 300 is applied to the mold 200, and then, other than the plurality of grooves 210. It may be made of a process for removing the first material applied to the area of. Alternatively, the process of filling the plurality of grooves 210 of the mold 200 with the first material 300 may include a gravure printing machine having the first material coated thereon to correspond to the plurality of grooves 210. It may be made of a process to rotate on the mold (200).

Next, as can be seen in Figure 4g, to form a first film layer 400 on the mold 200 including the first material (300).

The first film layer 400 is a transparent film layer, polyvinyl chloride (PVC), polyethylene terephthalate (PET), polyacrylate, polymethyl methacrylate, polyurethane, polycarbonate, polyethylene, polypropylene, or Transparent materials such as cellulose acetate butyrate (CAB) can be used.

When the UV curable resin is used as the first material 300, the first film 300 is cured by forming UV rays after forming the first film layer 400 and curing the first material 300. ) And the first film layer 400 are bonded. Therefore, a separate process for adhering the first material 300 and the first film layer 400 is not required.

Next, as can be seen in Figure 4h, the first film layer 400 and the first material 300 is separated from the mold 200.

Next, as shown in FIG. 4I, the second material 500 is filled in a region between the first material 300 on the first film layer 400.

In FIG. 4F, when the transparent material is used as the first material 300, an opaque material is used as the second material 500. However, when the opaque material is used as the first material 300, the transparent material is used as the second material 500.

The second material 500 may also use a UV curable resin. When the second material 500 is a transparent material, a UV curable resin such as an acrylic resin is used, and the second material 500 is an opaque material. In the case, a mixture added with a black pigment such as carbon black to a UV curable resin such as an acrylic resin may be used.

The filling of the second material 500 may include applying the second material 500 to the first film layer 400, and then applying the second material 500 to an area other than the area between the first material 300. It may be a process of removing the two materials, or, a step of rotating the gravure (gravure) printing machine on which the second material is applied to correspond to the area between the first material 300 on the first film layer 400 It may be made of.

Next, as can be seen in Figure 4j, by forming a second film layer 600 on the first material 300 and the second material 500, to complete the manufacturing of the light control film according to the present invention.

The second film layer 600 is a transparent film layer similar to the first film layer 400 described above, polyvinyl chloride (PVC), polyethylene terephthalate (PET), polyacrylate, polymethyl methacrylate, Transparent materials such as polyurethane, polycarbonate, polyethylene, polypropylene, or cellulose acetate butyrate (CAB) can be used.

When the UV curable resin is used as the second material 500, the second film 500 is cured by forming UV light after forming the second film layer 500, and then curing the second material 500. And the second film layer 500 are bonded.

As described above, the width W of the plurality of grooves 210 of the mold 200 and the distance D between the plurality of grooves 210 are appropriately formed, and together with the plurality of grooves 210. By deciding whether to fill a transparent material or an opaque material, the pitch between the opaque materials can be controlled.

For example, the width W of the plurality of grooves 210 of the mold 200 is formed to have a predetermined length (in particular, 70 μm or less) in FIG. 4E, and the first material 300 is illustrated in FIG. 4F. When filling the transparent material and filling the opaque material with the second material 500 in FIG. 4I, the pitch between the opaque materials of the finally obtained light control film is the width W of the plurality of grooves 210. Since the width W of the plurality of grooves 210 is formed to be 70 μm or less, the pitch between the opaque materials of the light control film may be formed to be 70 μm or less.

In addition, in FIG. 4E, the distance D between the plurality of grooves 210 of the mold 200 is formed to have a predetermined length (in particular, 70 μm or less), and the first material 300 is illustrated in FIG. 4F. When filling the opaque material and filling the transparent material with the second material 500 in FIG. 4I, the pitch between the opaque materials of the obtained light control film is equal to the distance D of the plurality of grooves 210. It is formed to a length, therefore, by forming a distance (D) between the plurality of grooves 210 to 70㎛ or less, it is possible to form a pitch between the opaque material of the light control film to 70㎛ or less.

<Light Control Film>

5A is a perspective view of a light control film according to an embodiment of the present invention, and FIG. 5B is a cross-sectional view of the light control film according to an embodiment of the present invention.

As can be seen in Figures 5a and 5b, the light control film according to an embodiment of the present invention is composed of a first film layer 400, a second film layer 600, and the light control layer (300a, 500a).

As described above, the first film layer 400 and the second film layer 600, as a transparent film layer, polyvinyl chloride (PVC), polyethylene terephthalate (PET), polyacrylate, polymethyl methacrylate Transparent materials such as polyurethane, polycarbonate, polyethylene, polypropylene, or cellulose acetate butyrate (CAB) may be used.

The light control layers 300a and 500a are formed between the first film layer 400 and the second film layer 600 and have a structure in which the transparent material layer 300a and the opaque material layer 500a are repeated. do.

The opaque material layer 500a is formed to be repeated in a horizontal state on one side of the first film layer 400 and one side of the second film layer 600. Specifically, the opaque material layer 500a is one direction. It consists of a plurality of linear arranged.

The pitch between the plurality of linear opaque material layers 500a is formed to be 70 μm or less.

The light control film having such a structure may be manufactured by the method as described above with reference to FIGS. 4A to 4J.

6 is a perspective view of a light control film according to another embodiment of the present invention, Figure 7 is a plan view of a light control film according to another embodiment of the present invention, Figures 6 and 7 the light constituting the light control film Only the control layer is shown.

The light control film according to FIG. 6 is formed of a plurality of linears in which the opaque material layers 500a are arranged crosswise, and the pitch between the opaque material layers 500a formed of the plurality of linears is 70 μm or less.

In the light control film of FIG. 7, the opaque material layer 500b is formed of a plurality of dot shapes arranged at predetermined intervals, and the pitch between the opaque material layers 500a formed of the plurality of dot shapes is 70 μm or less.

The opaque material layers 500a and 500b constituting the light control film may have a horizontal cross section of a polygon, such as a triangle or a square (see FIGS. 5A and 6), and a curved shape such as a circle or an ellipse (see FIG. 7). It may be made of). In addition, the opaque material layers 500a and 500b may have a wedge shape as shown in FIG. 6.

Figure 1a is a perspective view showing a light control film according to a conventional embodiment, Figure 1b is a perspective view showing a method for manufacturing a light control film according to a conventional embodiment.

Figure 2a is a perspective view showing a light control film according to another conventional embodiment, Figure 2b is a perspective view showing a method for manufacturing a light control film according to another conventional embodiment.

FIG. 3 is a graph showing how a moiré interference wavelength is changed by a pitch pattern between BMs (Black Matrix) defining pixels of a display device and a pitch pattern between opaque material layers of a light control film.

4A to 4J are cross-sectional views illustrating a manufacturing process of a light control film according to an embodiment of the present invention.

5A is a perspective view of a light control film according to an embodiment of the present invention, and FIG. 5B is a cross-sectional view of the light control film according to an embodiment of the present invention.

6 is a perspective view of a light control film according to another embodiment of the present invention.

7 is a plan view of a light control film according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: substrate 110 (110a): photoresist layer (photoresist pattern)

120: mask 130: master

200a: metal plating layer 200: mold

300: first material 300a: transparent material layer

400: first film layer 500: second material

500a and 500b: opaque material layer 600: second film layer

Claims (12)

Manufacturing a mold having a plurality of grooves repeated at predetermined intervals; Filling a first material into the plurality of grooves; Forming a first film layer on the mold including the first material; Separating the first film layer and the first material from the mold; Filling a second material in a region between the first materials on the first film layer; And And forming a second film layer on the first material and the second material. The method of claim 1, The process of manufacturing the mold, Preparing a master of a predetermined pattern; Forming a metal plating layer on the master of the predetermined pattern; And And separating the metal plating layer from the master to obtain a metal mold formed of the metal plating layer. The method of claim 2, Preparing the master of the predetermined pattern Forming a photoresist layer on the substrate; And And irradiating and developing light onto the photoresist layer through a mask having a predetermined pattern to form a predetermined photoresist pattern. The method of claim 2, Preparing the master of the predetermined pattern Forming a laser processing layer on the substrate; And And a step of forming a predetermined pattern by laser scribing the laser processing layer. The method according to any one of claims 1 to 4, Filling the first material is a step of filling a transparent material or an opaque material, Filling the second material is a light control film manufacturing method characterized in that consisting of a step of filling an opaque material or a transparent material. The method according to any one of claims 1 to 4, Filling the first material is a step of filling a UV curable resin, and further comprising a UV irradiation step for curing the UV curable resin after the process of forming the first film layer. Light control film manufacturing method. The method according to any one of claims 1 to 4, Filling the second material is a step of filling a UV curable resin, and further comprising a UV irradiation step for curing the UV curable resin after the process of forming the second film layer. Light control film manufacturing method. A first film layer and a second film layer; And It comprises a light control layer formed between the first film layer and the second film layer, The light control layer has a structure in which a transparent material layer and an opaque material layer are repeated, and the opaque material layer is arranged horizontally on one side of the first film layer and the second film layer, and the pitch between the opaque material layers. Light control film, characterized in that less than 70㎛. The method of claim 8, The opaque material layer is a light control film, characterized in that consisting of a plurality of linear arranged in one direction. The method of claim 8, The opaque material layer is light control film, characterized in that consisting of a plurality of linear arrangement. The method of claim 8, The opaque material layer is a light control film, characterized in that consisting of a plurality of points arranged at a predetermined interval. The method according to any one of claims 8 to 11, The light control film is a light control film, characterized in that produced by the manufacturing method according to any one of claims 1 to 4.

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