WO2014088360A1

WO2014088360A1 - Integrated optical film production method and integrated optical film

Info

Publication number: WO2014088360A1
Application number: PCT/KR2013/011254
Authority: WO
Inventors: 이대환; 서광석; 김종은; 황재선; 심연승
Original assignee: 주식회사 앤앤드에프; 인스콘테크(주)
Priority date: 2012-12-07
Filing date: 2013-12-06
Publication date: 2014-06-12
Also published as: KR101352055B1

Abstract

An integrated optical film production method is disclosed, the integrated optical film production method comprising the steps of: (a) coating a curable resin onto a first mould; (b) covering the upper surface of the resin, which has been coated onto the first mould, with a substrate layer; (c) forming a first layer by passing light through the resin covered by the substrate layer; (d) coating a curable resin onto a second mould; (e) covering the upper surface of the resin, which has been coated onto the second mould, with a first curable contact layer having a mould-release film laminated onto the upper surface thereof, and then forming a second layer in a cured state by passing light through same; (f) removing the mould-release film and laminating the first layer and the substrate layer, which have been detached from the first mould, onto the first curable contact layer; and (g) forming a two-layer optical film by integrating the laminated layers by passing light through same and detaching the second mould.

Description

Integrated optical film manufacturing method and integrated optical film

The present application relates to an integrated optical film manufacturing method and an integrated optical film, and more particularly, to an integrated optical film manufacturing method that can be applied to a liquid crystal display device, a light receiving display device, a signboard, an illumination, and an integrated optical film manufactured through the same. will be.

Liquid crystal display (LCD) is a representative display device widely used in various fields. Since the liquid crystal display is a non-light emitting device, a backlight unit for generating light is required. Therefore, such a backlight unit is an important factor for determining the size and light efficiency of the liquid crystal display device, and is composed of an assembly of various optical sheets.

In general, the backlight unit includes a light source, a light guide plate, a reflecting plate, a diffusion sheet, a prism sheet, and a protective sheet. In exemplary embodiments, the light generated from the light source is directed toward the diffusion sheet through the light guide plate, and the light diffused by the diffusion sheet is focused through the first and second prism sheets to be directed toward the liquid crystal display panel.

The diffusion sheet serves to provide uniform luminance over the entire area. In addition, the prism sheet performs a function of improving luminance in a specific viewing angle range. The luminance improvement at this particular viewing angle may be realized by condensing by the prism structure.

However, since the diffusion sheet and the prism sheet of the conventional backlight unit are provided by simple contact, the diffusion sheet and the prism sheet may be shifted from each other when the liquid crystal display device is used for a long time. A light leakage phenomenon may occur, or the light may not be properly refracted to the liquid crystal display panel, resulting in a narrow viewing angle or a problem in that the screen cannot be viewed at a specific viewing angle.

In addition, the optical sheets included in the backlight unit may have various patterns for controlling the degree of diffusion or condensing. By the way, in order to stably stack the optical sheets having a pattern without sag of the bottom surface or deformation of the pattern shape, the base layer underlying each of the optical sheets had to be disposed. For example, by forming a diffusion sheet having a pattern on one substrate layer, forming a prism sheet having a pattern on another substrate layer, and then stacking another substrate layer on which the prism sheet is formed on the diffusion sheet. The assembly was prepared.

That is, the conventional backlight unit has a limitation in implementing a slim thickness because the base layer must be disposed on each lower side of the optical sheets, and it is difficult to predict the path of incident light because an additional interface is formed between the base layer and the optical sheet. .

The present application is to solve the above-mentioned problems of the prior art, it is firmly secured to the integrity and provided with a slimmer, at the same time manufacturing an integrated optical film capable of efficiently diffusing or refracting light so as to greatly improve the brightness and light uniformity It is an object to provide a method and an integrated monolithic optical film.

As a technical means for achieving the above technical problem, the integrated optical film manufacturing method according to the first aspect of the present application comprises the steps of (a) coating a curable resin on a first mold having a pattern; (b) covering the substrate layer on an upper surface of the resin coated on the first mold; (c) projecting light onto the resin covered with the base layer to form a first layer that is temporarily cured or fully cured; (d) coating the curable resin on the second mold having the pattern; (e) Covering the first curable adhesive layer, the release film is laminated on the upper surface of the resin coated on the second mold, and then the light for the temporary curing on the resin covered with the first curable adhesive layer, the temporary curing state Forming a second layer of the; (f) removing the release film on the first curable adhesive layer, and laminating the first layer and the base layer separated from the first mold to contact the first layer on the first curable adhesive layer; And (g) projecting light onto the second layer, the first curable adhesive layer, the first layer, and the substrate layer to form the second layer, the first curable adhesive layer, the first layer, and the substrate layer. Integrating and separating the second mold to form a two-layer optical film.

In addition, as a technical means for achieving the above technical problem, the integrated optical film manufacturing method according to the second aspect of the present application comprises the steps of (a) coating a curable resin on the first mold having a pattern; (b) covering the substrate layer on an upper surface of the resin coated on the first mold; (c) projecting light onto the resin covered with the base layer to form a first layer that is temporarily cured or fully cured; (d) coating the curable resin on the second mold having the pattern; (e) projecting light for precure to the resin coated on the second mold to form a precured second layer, and then the first curable adhesive layer having a release film laminated on the upper surface of the precured state Covering the top surface of the second layer; (f) removing the release film on the first curable adhesive layer, and laminating the first layer and the base layer separated from the first mold to contact the first layer on the first curable adhesive layer; And (g) projecting light onto the second layer, the first curable adhesive layer, the first layer, and the substrate layer to form the second layer, the first curable adhesive layer, the first layer, and the substrate layer. Integrating and separating the second mold to form a two-layer optical film.

In addition, as a technical means for achieving the above technical problem, the integrated optical film according to the first aspect of the present application is a base layer; A first layer disposed on the substrate layer and having a pattern formed on an upper surface thereof; A second layer disposed on the first layer, the second layer having a pattern formed on an upper surface thereof, wherein the second layer is separate from the first layer through the first curable adhesive layer bonded to the lower surface; The first curable adhesive layer integrally connected with the first layer without the addition of the substrate layer, the first layer, the second layer, and the first layer and the second layer is integrally formed. It can be formed as.

According to the above-described problem solving means of the present application, the optical layers stacked on the first layer can be formed to have a flat bottom surface without a base layer supporting each, having a slim thickness and at the same time incident through the bottom surface An integrated optical film capable of uniformly setting the incident angle of the light to be provided may be provided.

In addition, according to the aforementioned problem solving means of the present application, the optical layers stacked on the first layer can be manufactured and laminated in a state having a clear shape without a base layer, it is possible to easily implement the pattern in a desired shape, Accordingly, an integrated optical film that can more easily adjust or improve luminance and light uniformity may be provided according to application conditions for each product.

In addition, according to the above-described problem solving means of the present application, even if each layer is formed integrally and the use period is prolonged, it does not deviate from each other unless excessive external force exceeding the allowable value, light leakage phenomenon or narrow optical viewing angle or specific The problem that light divergence is not achieved at the viewing angle can be solved.

1 is a flowchart illustrating a process of manufacturing a two-layer optical film through the integrated optical film manufacturing method according to the first embodiment of the present application.

2 is a flowchart illustrating a process of manufacturing a three-layer optical film through the integrated optical film manufacturing method according to the first embodiment of the present application.

3A to 3D, 4A to 4D, 5A, 5B, 6A, and 6B are cross-sectional views illustrating a method of manufacturing an integrated optical film according to a first embodiment.

7 is a perspective view of an integrated optical film according to the first embodiment of the present application.

8 is an exploded perspective view of an integrated optical film according to the first embodiment of the present application.

9A is a plan view from above of a first layer of an integrated optical film according to a first embodiment of the present disclosure;

9B is a plan view from above of another example of the first layer of the integrated optical film according to the first embodiment of the present application;

10 is a perspective view of an integrated optical film according to a second embodiment of the present application.

11 is a perspective view of an integrated optical film according to a third embodiment of the present application.

12 is a perspective view of an integrated optical film according to a fourth embodiment of the present application.

13 is a perspective view of an integrated optical film according to a fifth embodiment of the present application.

14 is an exploded perspective view of an integrated optical film according to a sixth embodiment of the present application.

15 is an exploded perspective view of an integrated optical film according to a seventh embodiment of the present application.

16 is an exploded perspective view of an integrated optical film according to an eighth embodiment of the present application.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present disclosure. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.

Throughout this specification, when a portion is "connected" to another portion, this includes not only "directly connected" but also "electrically connected" with another element in between. do.

Throughout this specification, when a member is located “on” another member, this includes not only when one member is in contact with another member but also when another member exists between the two members.

Throughout this specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding the other components unless specifically stated otherwise. As used throughout this specification, the terms "about", "substantially" and the like are used at, or in the sense of, numerical values when a manufacturing and material tolerance inherent in the stated meanings is indicated, Accurate or absolute figures are used to assist in the prevention of unfair use by unscrupulous infringers. As used throughout this specification, the term "step to" or "step of" does not mean "step for."

Throughout this specification, the term “combination of these” included in the expression of the makushi form means one or more mixtures or combinations selected from the group consisting of constituents described in the expression of the makushi form, wherein the constituents It means to include one or more selected from the group consisting of.

For reference, terms related to directions or positions (top, bottom, top, upward, downward, etc.) in the description of the embodiments of the present application are shown in FIGS. 3A to 3D, 4A to 4D, 5A, 5B, 6A, and FIG. The setting is based on 6b. For example, in FIG. 6B, the upward direction may be upward, the upward direction may be the upper surface, the downward direction may be downward, and the downward direction may be the lower surface. However, in various practical applications of the embodiments of the present disclosure, the upper surface may be disposed in various directions such as to face forward.

Hereinafter, a method of manufacturing an integrated optical film according to various embodiments of the present disclosure will be described.

First, the integrated optical film manufacturing method (hereinafter, referred to as a 'first integrated optical film manufacturing method') according to the first embodiment of the present application will be described.

FIG. 1 is a flowchart illustrating a process of manufacturing a two-layer optical film through the integrated optical film manufacturing method according to the first embodiment of the present application, and FIG. 2 is a flowchart illustrating the integrated optical film manufacturing method according to the first embodiment of the present application. It is a flowchart which shows the process of manufacturing a layer optical film. 3A to 3D, 4A to 4D, 5A, 5B, 6A, and 6B are cross-sectional views illustrating a method of manufacturing an integrated optical film according to a first embodiment.

1 and 3A, the first integrated optical film manufacturing method S100 includes coating the curable resin on the first mold 600 having the pattern 610 (S105).

Referring to FIG. 3A, the pattern 610 of the first mold 600 may be variously formed to correspond to the shape of the pattern 11 of the first layer 1. For example, as illustrated in FIG. 3A, the pattern 610 of the first mold 600 may be convex, and the pattern 11 of the first layer 1 may be concave to engage with it. For reference, as shown in FIG. 18, when the pattern of the first layer 1 is convex, the pattern 610 of the first mold 600 may be concave to correspond thereto.

1 and 3B, the first integrated optical film manufacturing method S100 includes covering the base layer 9 on the top surface of the resin coated on the first mold 600 (S110).

The base material layer 9 is the most basic layer of each layer which forms an integrated optical film. Referring to FIG. 5B, the base layer 9 may be a layer that transmits light from the lower side to the first layer 1.

Referring to FIG. 3B, in step S110, the base layer 9 is disposed above the resin corresponding to the first layer 1. That is, the base layer 9 covers the upper surface of the resin to be the first layer 1 so as to be temporarily cured or completely cured in a state where the upper surface of the resin is kept flat during future curing or complete curing.

For example, the base layer 9 may be a flat film shape made of a material such as polyethylene terephthalate (PET), polycarbonate (PC), polyethylene (PE), but is not limited thereto. That is, the base layer 9 may be formed of a material having a predetermined refractive index and light transmittance in order to secure desired luminance and light uniformity.

In addition, a light guide plate (LGP) may serve as the base layer 9. In other words, the substrate layer 9 may be a light guide plate. The light guide plate is a component that converts light incident from a lamp (not shown) into uniform planar light, and is generally made of PMMA (polymethymethacrylate), which is an acrylic resin. Thus, the backlight unit to which the integrated optical film is applied, in which the base layer 9 itself becomes a light guide plate, may be provided more slim.

However, the base layer 9 is not necessarily limited to the light guide plate, and it is preferable that the base layer 9 is understood as a concept that includes all the layers capable of transmitting light from the lower side to the first layer 1 as the bases of the respective layers. Do.

1 and 3C, the first integrated optical film manufacturing method S100 may include a first hardened or fully hardened state by projecting light for temporary hardening or complete hardening onto a resin covered with a base layer 9. Forming a layer 1 (S115).

Here, the resin may be a curable transparent resin cured by any one of ultraviolet (UV) and infrared (IR).

For example, the light projected onto the resin for temporary curing may be short wavelength ultraviolet (UV), and such short wavelength ultraviolet light may be realized through a BL lamp. In addition, the light projected onto the resin for complete curing may be long wavelength ultraviolet (UV), and may be implemented through a mercury lamp, a metal halide lamp, a gallium lamp, an LED lamp, and the like. Such long wavelength ultraviolet (UV) may involve not only photo curing but also thermal curing.

Also, projecting light for temporary curing on the resin means that the resin projects light enough to be temporarily cured. For example, as shown in FIG. 3C, the light for temporary curing may be simultaneously projected from the upper side and the lower side, but the present invention is not limited thereto, and light projection for temporary curing may be performed in another manner as necessary.

Here, to describe in more detail how hard curing means, the resin is coated on the first mold 600, and then cured to a predetermined or more to prepare the first layer 1 in an excessively hardened state. When the first layer 1 is entangled in the first mold 600, it becomes difficult to separate the first layer 1 from the first mold 600, or the first layer 1 is formed in the first mold 600. ) May damage the surface.

That is, the temporary hardening is such that the first layer 1 can be easily separated from the first mold 600 without damage, and the first layer 1 after the first layer 1 is separated from the first mold 600. It means curing made to the extent that the shape of 1) can be maintained without deformation. The term temporary curing used in the future may also be used in the same sense as described above.

However, when the first mold 600 is provided through a mold having a surface having a high releasability through a release agent or the like rather than a general mold, the first mold even after the first layer 1 is completely cured. It may be separated from the 600 without damage. However, in order to form the first layer 1 having a more stable and clear pattern, it will be preferable to perform the temporary curing as described above.

Referring also to FIG. 3D, the first layer 1 in this temporary hardened state and the base layer 9 integrally bonded with the temporary hardened first layer 1 may be separated from the first mold 600. have. However, this separation point is not necessarily before the second layer 2 is manufactured, and the separation point may be determined in consideration of the manufacturing conditions. In a similar context, the manufacturing process of the first layer 1 does not necessarily have to proceed first, and the manufacturing process of the second layer 2 may proceed first depending on the manufacturing conditions.

1 and 4A, the first integrated optical film manufacturing method S100 may include coating a curable resin on a second mold 700 having a pattern 710 (S120).

Referring to FIG. 4A, the pattern 710 of the second mold 700 may be variously formed to correspond to the shape of the pattern 21 of the second layer 2. For example, as illustrated in FIG. 4A, the pattern 710 of the second mold 700 may have a prism shape, and the pattern 11 of the first layer 1 may have a prism shape that engages thereto. For reference, as shown in FIG. 12, if the pattern of the second layer 2 is convex, on the contrary, the pattern 710 of the second mold 700 may be formed to be concave to correspond thereto.

1, 4B, and 4C, the first integrated optical film manufacturing method S100 includes a first curable adhesive layer 91 having a release film 99 laminated on an upper surface thereof on a second mold 700. Covering the release film 99 on the upper surface of the resin coated on the resin, and then projecting light for temporary curing on the resin covered with the first curable adhesive layer 91 to form a second layer (2) of the temporary curing state ( S125).

Here, the release film 99 (release film) means a film having a release property. In other words, the release film 99 is a film made of a material having easy peelability. For example, the release film 99 may have a surface material including silica, fluorine, titanium, or the like. The release film 99 may be separated from the cured or fully cured resin even after the resin is temporarily cured or completely cured, unlike the base layer 9 in the salping step S110.

In addition, the term "curable adhesive layer" used in the first curable adhesive layer 91 and the second curable adhesive layer 92 to be described later has adhesiveness or adhesiveness, and is cured by any one of ultraviolet (UV) and infrared (IR) light. It means a layer having a property. As the curable adhesive layer is irradiated with any one of ultraviolet rays and infrared rays to such a curable adhesive layer, adhesiveness or adhesiveness may be stronger. That is, the latent adhesive force of the curable adhesive layer may be significantly increased compared to the initial adhesive force. For example, the initial adhesive force of the curable adhesive layer may be 10 gf / 25mm, and the late adhesive force may be 1000 gf / 25mm.

Referring to FIG. 4B, in step S125, the first curable adhesive layer 91 having the release film 99 stacked on the top surface is disposed on the resin corresponding to the second layer 2. That is, the first curable adhesive layer 91 in which the release film 99 is laminated on the top surface covers the top surface of the resin to be the second layer 2 so that the top surface of the resin is kept flat during future curing or complete curing. Allow for temporary curing or complete curing.

In addition, referring to FIGS. 1 and 4C, in operation S125, light for temporary curing is projected onto a resin covered with the first curable adhesive layer 91 on which the release film 99 is laminated to form a second layer 2 in a temporary curing state 2. ) Is formed. The description of the material of the resin, temporary curing, light for temporary curing, etc. will be omitted because it is overlapped with the description in step S115.

1 and 4D, in the method of manufacturing a first integrated optical film S100, the release film 99 is removed from the first curable adhesive layer 91, and the first layer is formed on the first curable adhesive layer 91. Laminating the first layer 1 and the base layer 9 separated from the first mold 600 such that (1) is in contact (S135).

That is, in the state where the release film 99 covers the first curable adhesive layer 91 laminated on the upper surface, the resin is temporarily hardened to a degree such that the flat upper surface (lower surface when viewed in FIG. 6B) can be maintained without deformation. 2) and then the first layer separated from the second mold 600 as shown in FIG. 3d on the first curable adhesive layer 91 from which the release film 99 is removed and then the release film 99 is removed as shown in FIG. 4d. (1) and the base material layer 9 are laminated | stacked (refer FIG. 6A).

More specifically, when the second layer 2 is in an uncured state, the adhesive force (or adhesive force) between the release film 99 and the first curable adhesive layer 91 may be the first curable adhesive layer 91 and the second layer ( It is stronger than the adhesive force (or adhesive force) between 2). Therefore, in this case, even if the release film 99 is to be separated from the first curable adhesive layer 91, it is not separated. On the other hand, when the second layer 2 is temporarily cured, the adhesive force (or adhesive force) between the second layer 2 and the first curable adhesive layer 91 becomes very high, and thus the release film 99 and the first curable composition are formed. The adhesive force (or adhesive force) between the first curable adhesive layer 91 and the second layer 2 is greater than the adhesive force (or adhesive force) between the adhesive layers 91. Therefore, when the second layer 2 is temporarily cured, the release film 99 can be easily separated from the first curable adhesive layer 91.

1, 5A, and 5B, the step S125 may include a release roll 810 or a release film having a release surface on the top surface of the resin coated on the second mold 700 (not shown in the drawing). Pressurized to flatten and project light for temporary hardening onto the resin coated on the second mold 700 to form the second layer 2 in a temporary hardened state, and then release film 99 on the upper surface. The laminated first curable adhesive layer 91 may be covered on the upper surface of the second layer 2 in a temporary curing state.

In other words, step S125 may first cover the first curable adhesive layer 91 on the resin corresponding to the second layer 2, and then temporarily harden the second layer 2 to form the second layer 2. Temporary hardening may be performed under pressure of the 81 or the release film to form the second layer 2, and then the first curable adhesive layer 91 may be covered on the second layer 2.

Here, the surface with the release property of the release roll 810 or the release film means a surface made of a material having peelability that is easy to peel off. For example, in the case of the release roll 810, a surface having a release property may be formed through a release layer 811 provided through a coating or the like along the outer circumference of the release roll 810.

In addition, the surface having such a release property, for example, the release layer 811 may be made of a material including at least one of Teflon, fluorine, silicon, tungsten, and titanium. The release surface of the release roll 810 or the release surface of the release film is preferably selected as a material that can ensure a higher release property corresponding to the component of the resin coated on the second mold 700.

Referring to a more specific example using the release roll 810 with reference to Figure 5a, in step S125, the resin coated on the second mold 700 and the second mold 700, the release roll 810 and It may be passed between the release roll 810 and the guide roll 820 spaced apart from each other. In addition, the distance between the release roll 810 and the guide roll 820 may be smaller than or equal to the total thickness of the resin coated on the second mold 700 and the second mold 700.

In addition, when the resin coated on the second mold 700 and the second mold 700 passes between the release roll 810 and the guide roll 820, the release roll 810 is formed on the second mold 700. The release roll 810 is disposed on the upper side and the guide roll 820 is disposed on the lower side so as to be in contact with the upper surface of the resin coated thereon.

Thus, by pressing the upper surface of the resin coated on the second mold 700 uniformly through the release roll 810, the upper surface of the resin coated on the second mold 700 can be formed flat. If a general roll without releasability is used, the roll is not easily separated after contacting the top surface of the resin coated on the second mold 700, so that the top surface of the resin coated on the second mold 700 is flat. It could not be formed.

Alternatively, although not shown in the drawing, the release roll 810 may be replaced with a general roll having no release property, and instead, the release roll 810 may be covered with a release film on a resin coated on the second mold 700. That is, as described above, the surface may have a release property (release layer 811) on the circumference of the roll, and a release film separate from the roll is placed on the resin coated on the second mold 700. The general roll may pressurize similarly to the pressing method through the release roll 810 described above. Here, the release film may be understood as a configuration having a function and a material similar to the salpin release film 99.

Referring to FIG. 5A, the top surface of the resin coated on the second mold 700 is flattened through the release roll 810 or the release film, and then mirrored to the resin coated on the second mold 700. The second layer 2 in the temporary hardened state is formed by projecting light for ignition. The description of the material of the resin, temporary curing, light for temporary curing, etc. will be omitted because it is overlapped with the description in step S115.

As such, the light for temporary curing is directly projected onto the planarized portion of the release roll 810 or the release film of the resin coated on the second mold 700, thereby coating the second mold 700. The top surface of the resin can be temporarily hardened and fixed to such an extent that it can be maintained without deformation in a flattened state, so that flatness can be greatly improved. That is, as shown in Figure 5a, it is preferable in the flatness improvement to immediately proceed the temporary curing process through light irradiation immediately after the planarization process through the release roll 810 or the release film.

After the second layer 2 is formed through the above process, as shown in FIG. 5B, the second curable adhesive layer 91 in which the release film 99 is laminated on the upper surface thereof is temporarily cured as shown in FIG. 5B. A process of covering the upper surface of the layer 2 may be performed.

1, 6A, and 6B, the first integrated optical film manufacturing method S100 includes a second layer 2, a first curable adhesive layer 91, a first layer 1, and a base layer. The light is projected onto (9) to integrate the second layer (2), the first curable adhesive layer (91), the first layer (1), and the base layer (9), and separate the second mold (700) into two layers. Forming the optical film 120 (S140).

In this case, the light projected in step S140 may be light for complete curing. When the light for the complete curing is projected in the step S140, the second layer 2, the first curable adhesive layer 91, the first layer 1, and the base layer 9 in the state in which the second bonding Since the layer 2 and the first layer 1 are completely cured, the two-layer optical film 120 can be made of an integral optical film having integrity. That is, the first layer 1 and the second layer 2 are completely cured while the second layer 2, the first curable adhesive layer 91, the first layer 1, and the base layer 9 are bonded together. The integral optical film can be formed by tangling the parts together.

In addition, the first curable adhesive layer 91 may also be completely cured through projection of light for complete curing. Through this complete curing, the adhesion (or adhesion) to the second layer 2 and the first layer 1 of the first curable adhesive layer 91 is further increased through bonds that are entangled between the particles, and more firmly integrated. An integrated optical film can be formed.

For reference, the integral means that the laminated layers are formed as one body so that each layer is not separated from each other when an external force is applied to the optical film.

As described above, the two-layer optical film 120 is integrally formed, so that the second layer 2, the first layer 1, and the base layer 9 are not provided with excessive external force exceeding the allowable value even if the service life becomes longer. ) Does not deviate from each other, so that a light leakage phenomenon, a narrow viewing angle, or a light divergence at a specific viewing angle may be solved.

In addition, since the layers are integrally formed through the addition and complete curing of the first curable adhesive layer 91 which is extremely thin compared to the base layer 9, the first layer 1 and the second layer 2 are similar to each other. There is no need to add a separate base layer, the integrated optical film can be provided more slim. In addition, since there is no addition of a separate substrate layer, the configuration is simple, so that the manufacturing is easy and the composition is not coarse, so that the bonding between the components is more firm, and separation between the stacked layers can be more surely prevented.

In addition, the first layer 1 and the second layer 2 may be made of a resin that is tacky or adhesive. That is, by hardening a resin made of a material having an adhesive or adhesive property to form the first layer 1 and the second layer 2, a more robust integrated optical film can be produced.

For reference, the term "adhesiveness" means a property in which adhesive force is continuously maintained by sticking sticky. For example, adhesiveness is a property that stickiness is continuously maintained on the surface of the first layer 1 adhering to the base material layer 9 even if the first layer 1 applied to the base layer 9 is removed by applying a predetermined force or more. . In other words, when the first layer 1 having the adhesive property is removed from the base layer 9 and then adhered to the base layer 9 again, the first layer 1 may be stuck to each other again to maintain a predetermined or more integrity.

That is, adhesiveness is a concept that is distinguished from adhesiveness, which is a property in which stickiness exists only at the time of initial bonding and stickiness is lost when it is detached and cannot be reattached. In other words, the concept of adhesion refers to adhesion, adhesion, etc., in which an adhesive force exists only when the integrated optical film is first manufactured, and when the layers are separated from each other by an unexpected external force after the completion of manufacturing, the adhesion is lost and cannot be bonded again. Can be understood as another concept.

As such, by allowing each layer to be formed through a sticky resin, the surface of each layer may be unexpectedly generated even when an external force of a size and direction exceeding the allowable value is applied to the finished monolithic optical film so that the layers are separated from each other. Since stickiness is constantly maintained, the separated layers can be easily integrated again. Therefore, the integrated optical film can be more firmly maintained, thereby solving the problem that light leakage occurs, the optical viewing angle is narrowed, or the light does not diverge to a specific viewing angle.

In addition, the two-layer optical film 120 in which the first layer 1, the first curable adhesive layer 91, and the second layer 2 are laminated on the base layer 9 through the complete curing (see FIG. 6B). When manufactured, the second layer 2 is separated from the second mold 700 after it is fully cured. Therefore, the second mold 700 is preferably provided through a mold having a high surface releasability (peelability), through which the second layer 2 is stably separated from the second mold 700 in step S140. Can be.

6A, the first integrated optical film manufacturing method S100 may include a second mold 700, a second layer 2, and a first curable adhesive layer between the rolls 900 installed at intervals before the step S140. (91), the first layer (1), and the substrate layer 9 may be passed through. In this case, the gap between the rolls 900 is smaller than the total thickness of the second mold 600, the second layer 2, the second curable adhesive layer 91, the first layer 1, and the base layer 9. Or the same size.

As described above, before proceeding to step S140, the second mold 700, the second layer 2, the second curable adhesive layer 91, the first layer 1, and the substrate layer 9 which are sequentially stacked are rolled ( By passing through 900 may be a physical action primarily to make the overall thickness uniform. In addition, predetermined compression may be achieved by adjusting the gap between the rolls 900.

As shown in FIG. 6A, the second layer 2 and the first layer 1 are supported by the second mold 700 at the lower side thereof and protected by the substrate layer 9 at the upper side thereof. Accordingly, since the second layer 2 and the first layer 1 are indirectly subjected to a physical force for uniform thickness or predetermined compression, more stable passage can be achieved.

Meanwhile, referring to FIGS. 2 and 10, the method of manufacturing a first integrated optical film S100 may include coating a curable resin on a third mold having a pattern after step S140 (S145), and a release film 99 on an upper surface thereof. ) Is laminated on the upper surface of the resin coated on the third mold, and then the light for provisional curing is projected onto the resin covered with the second curable adhesive layer 92 to prepare the Forming the third layer 3 (S150), the release film 99 is removed from the second curable adhesive layer 92, and the second layer 2 is brought into contact with the second curable adhesive layer 92. Stacking the optical film 120 (S160), and projecting light onto the third layer 3, the second curable adhesive layer 2, and the two-layer optical film 120 to make the third layer 3, Integrating the two-curable adhesive layer 2 and the two-layer optical film 120 and separating the third mold to form a three-layer optical film 130 (S165).

Alternatively, referring to FIGS. 2 and 10, in step S150, the light for temporary curing is projected onto the resin coated on the third mold to form the third layer 3 in the temporary curing state, and then the release film ( The second curable adhesive layer 92 may be stacked on the upper surface of the third layer 3 in a temporary curing state. In other words, step S150 may first cover the second curable adhesive layer 92 on the resin corresponding to the third layer 3, and then temporarily harden to form the third layer 3. May be performed to form the third layer 3, and then the second curable adhesive layer 92 may be covered on the third layer 3.

The light projected in step S165 may be light for complete curing.

In this case, the light projected in step S140 may be light for temporary curing or complete curing. As described above, the integrated optical film may be manufactured in the form of the two-layer optical film 120 by projecting light for complete curing in step S140. On the other hand, in the case of manufacturing a multilayer optical film having three or more layers by stacking other layers on the second layer 2, the light for temporary curing may be projected in step S140. Alternatively, even in the case of manufacturing a multilayer optical film having three or more layers by stacking other layers on the second layer 2, the light for complete curing may be projected in step S140. In this case, as described above, if the second mold 700 is provided with a mold having a high releasability (peelability), the second mold 700 may be removed from the second mold 700 even if the second layer 2 is completely cured in step S140. It can be separated reliably.

That is, the first integrated optical film manufacturing method S100 may form the n-layer optical film by repeating steps S145, S150, S160, and S165 even after the three-layer optical film 130 is formed as described above. Can be.

As such, when the steps S145 to S165 are repeated to form the n-layer optical film, the light projected on the n-th layer and the (n-1) -layer optical film of the light projected for each repeated S165 step is light for complete curing. And the remaining light may be light for temporary curing. That is, the integral optical film can be produced by projecting light for temporary curing until lamination of the final layer, and projecting light for complete curing after lamination of the final layer is made.

Alternatively, the production of an integrated optical film can be made in a manner that projects light for complete curing as each layer is laminated. For example, in the case of manufacturing an optical film that is finally three layers (excluding the base layer) (see FIGS. 2 and 10), the first curable adhesive layer 91 laminated on the second layer 2 in a temporary curing state is formed. The first layer 1 of the temporary hardening or fully hardened state in which the base material layer 9 is laminated on the upper surface is laminated, and then completely cured to integrate the two layers once, and then to the third layer 3 of temporary hardened state. The manufacture of the integrated optical film may be made in such a way that the two layers integrated on the second curable adhesive layer 92 laminated on the layer are laminated and then completely cured to integrate the three layers. However, as previously described, when the light projected before lamination of the final layer is light for complete curing, it is preferable to provide a mold having a surface having high releasability (peelability) in contact with the resin to be fully cured. .

In addition, the first integrated optical film manufacturing method (S100) is a third mold, the second curable adhesive layer 92, the third layer (3), and the two-layer optical between the rolls 900 installed at intervals before each step S165. The method may further include passing the film 120 (see FIG. 10). In this case, the interval between the rolls 700 may be smaller than or equal to the total thickness of the third mold, the third layer 3, the second curable adhesive layer 92, and the two-layer optical film 120.

As such, after the release film 99 is separated from the first curable adhesive layer 91 or the second curable adhesive layer 92 having the release film 99 laminated on the upper surface through temporary curing, the first curable film is completely cured. By maximizing the adhesion (or adhesive force) of the adhesive layer 91 or the second curable adhesive layer 92, the first layer 1 and the second layer 2, or the second layer 2 and the third layer 3 Through a method of integrally and firmly coupled, the integrated optical film can be provided with a slimmer thickness but is not easily separated from each other, and thus light leakage phenomenon can be more effectively prevented.

In addition, as described above, in the formation of the layer of the second layer 2 or more, the first curable adhesive layer 91 or the second curable adhesive layer 92 from which the release film 99 is removed after temporary curing is used instead of the base layer 9. Thereby, the optical layers stacked on the first layer 1 can be formed to have a flat bottom surface without the base layer for each. In addition, when the bottom surface of each of the optical layers becomes flatter, the incident angle of light incident through the bottom surface may be uniform as a whole, and optical properties such as light uniformity and luminance may be greatly improved.

In the related art, a method of pattern-processing an upper surface after applying resin on a substrate layer is used, which makes it difficult to form a pattern clearly and may cause problems such as resin flowing down around the substrate layer during a pattern processing process. More specifically, when each optical layer is formed in such a manner that the resin is directly applied onto the substrate layer and cured, it becomes very difficult to form a pattern having a desired shape in the optical layer.

For example, if a resin is applied onto a substrate layer and then the shape of the pattern is processed through a press before the resin is cured, the shape of the pressed pattern is difficult to maintain continuously and the resin may flow sideways by press compression. . On the other hand, when the press working after the resin is cured, there is a possibility that the optical layer to form a pattern is damaged or deformed, the press working becomes more difficult. As described above, the method of directly applying the resin on the substrate layer made it impossible to manufacture the optical layer having the pattern in a clear shape.

On the contrary, the present application coats a resin on a mold so that a pattern is formed on the lower side rather than the upper side of the resin, and the upper side of the resin is a first curable adhesive layer 91 having an easily detachable release film 99 laminated on an upper surface thereof. By covering the second curable adhesive layer 92 to form a flat bottom surface first, and then temporarily hardening to separate only the release film 99 while leaving the first curable adhesive layer 91 or the second curable adhesive layer 92. In addition, the bottom surface is not only flat, but also a pattern can be clearly formed in a desired shape. In addition, the present application used a mold having a surface having a high releasability (peelability) or to make the optical layer in a detachable hardened state on the mold so that each optical layer does not get tangled with the mold during temporary curing or complete curing. .

In addition, the substrate layer for supporting the first layer 1 by using the first curable adhesive layer 91 or the second curable adhesive layer 92 that can be separated from the release film 99 when the mold and the resin are cured. Except 9), the base layer can be omitted entirely, so that the integrated optical film can be manufactured with a much slimmer thickness than the conventional optical film.

That is, the integrated optical film manufacturing methods disclosed herein include the material side of the optical layer (curable resin), the side of the manufacturing means of the optical layer (using the mold and the curable adhesive layer), and the manufacturing process of the optical layer (releasing in the temporary curing state). After the film is completely cured to maximize the integral bonding force between each layer) is an invention combined so that the side is organically linked.

Hereinafter, an integrated optical film according to various embodiments of the present disclosure will be described. However, since the present invention relates to an integrated optical film manufactured through the integrated optical film manufacturing method according to various embodiments of the present disclosure described above, the same reference numerals are used for the same or similar components as the salpin configuration, and a redundant description will be briefly described. Or omit it.

For reference, the integrated optical film according to various embodiments of the present disclosure may be applied to various fields such as a liquid crystal display (LCD) as well as all light receiving display devices such as an electrophoretic display device, a signboard, and an illumination.

First, referring to the drawings (FIGS. 7, 8, 9A, and 9B) of the integrated optical film according to the first embodiment of the present application, the integrated optical film according to various embodiments of the present application (hereinafter 'the integrated optical film') The configuration and technical matters commonly applied to the film) will be described.

7 is a perspective view of the integrated optical film according to the first embodiment of the present application, and FIG. 8 is an exploded perspective view of the integrated optical film according to the first embodiment of the present application. 9A is a plan view from above of a first layer of an integrated optical film according to a first embodiment of the present application, and FIG. 9B is a view of another example of the first layer of an integrated optical film according to a first embodiment of the present application from above Top view.

This integrated optical film includes the base layer 9. 7, 8, and 10 to 13, the base layer 9 is the most basic layer of each of the layers forming the integrated optical film. The base layer 9 may be a layer that transmits light from the bottom side to the first layer 1. Accordingly, the base layer 35 may have a material having light transmittance.

In addition, the integrated optical film includes a first layer (1).

7, 8, and 10 to 13, the first layer 1 is disposed on the base layer 9, the pattern 11 is formed on the upper surface.

For example, the pattern 11 may be formed according to a regular shape and arrangement as shown in FIG. 9A, or may be formed according to a random size, depth, shape, arrangement, etc., as shown in FIG. 9B. The shape and arrangement of the pattern 11 may be variously set in consideration of the desired degree of light diffusion, the necessity of securing luminance, and the like.

This first layer 1 may be formed of curable resin. By way of example, such a resin may be a curable transparent resin cured by either ultraviolet (UV) or infrared (IR). In addition, the resin may be a resin that is tacky or adhesive. For example, the resin forming the first layer 1 may be a resin that remains tacky even in a hardened state.

And this integrated optical film includes the second layer (2).

The second layer 2 is disposed on the first layer 1, and a pattern 21 is formed on the upper surface.

In addition, the second layer 2 is directly connected to the first layer 1 through the first curable adhesive layer 91 bonded to the lower surface thereof without the addition of a separate base layer between the first layer 1. do. That is, the integrated optical film also includes a first curable adhesive layer 91 bonded to the lower surface of the second layer 2.

As described above, in the manufacturing method of the integrated optical film according to various embodiments of the present application, in the manufacturing process of the integrated optical film, the application of the curable adhesive layer that can separate the release film during mold and temporary curing may be organically linked. In addition to the substrate layer 9 supporting the layer 1, all other substrate layers, such as the substrate layer supporting the second layer 2, can be omitted, so that an integrated optical film is manufactured with a much slimmer thickness than a conventional optical film. Can be.

The base layer 9, the first layer 1, the second layer 2, and the first curable adhesive layer 91 formed between the first layer 1 and the second layer 2 are integrally formed. Is formed.

As previously described in the integrated optical film manufacturing method according to various embodiments of the present application, in the production of the integrated optical film, it is possible to remove the laminated release film 99 after temporary curing and stronger adhesion (or adhesive force after complete curing) By using the first curable adhesive layer 91 that integrally connects the first layer (1) and the second layer (2) by using a), an integrated optical film can be formed.

In addition, the lower surface of the second layer 2 may be connected to the first layer 1 in a flat state.

As previously described in the integrated optical film manufacturing method according to various embodiments of the present application, in the production of the integrated optical film, by using the first curable adhesive layer 91, the release film 99 is laminated on the upper surface, The second layer 2 laminated on the layer 1 may be formed to have a flat bottom surface. In addition, when the bottom surface of the second layer 2 becomes flatter, the incident angle of light incident through the bottom surface may be uniform as a whole, and optical properties such as light uniformity and luminance may be greatly improved.

This second layer 2 may be formed of curable resin. Since the structure of the 1st layer 1 has been demonstrated about this, detailed description is abbreviate | omitted.

In addition, the integrated optical film may further include one optical layer 3 (see FIG. 10) or a plurality of optical layers (not shown in the drawing).

Even if the integrated optical film is laminated in three or more layers in this manner, in the manufacturing process of the integrated optical film as described above, all other substrate layers other than the substrate layer 9 supporting the first layer 1 may be omitted. Each layer may have a flat bottom surface, and the pattern formed in each layer is clearly formed in a desired shape.

Therefore, even if the integrated optical film is provided in three or more layers of multilayers, an integrated optical film having a much slimmer, more robust and improved optical characteristic than a conventional multilayer optical film can be realized.

Referring to FIG. 10, when there is one optical layer 3, one optical layer 3 is disposed on the second layer 2 and a pattern 31 is formed on the upper surface thereof. When there is only one optical layer 3, it will be referred to as a third layer (3). One optical layer 3, i.e., the third layer 3, has a lower side without the addition of a separate base layer between the lower second layer 2 through the second curable adhesive layer 92 bonded to the lower surface thereof. Is directly connected with the second layer 2. In addition, the base material layer 9, the 1st layer 1, the 1st curable adhesive layer 91, the 2nd layer 2, the 2nd curable adhesive layer 92, and the 3rd layer 3 are integrally formed. .

Alternatively, although not shown in the drawing, when there are a plurality of optical layers, the plurality of optical layers are sequentially disposed on the second layer 2 and a pattern is formed on each top surface. Thus, when there are a plurality of optical layers, each of the plurality of optical layers is formed of a separate base layer between the second layer 2 or the lower optical layer through the second curable adhesive layer 92 bonded to the lower surface thereof. It is directly connected with the lower second layer 2 or the lower optical layer without addition. Further, the substrate layer 9, the first layer 1, the first curable adhesive layer 91, the second layer 2, the plurality of optical layers, the second layer 2, and the plurality of optical layers are formed. The second curable adhesive layer 92 is integrally formed.

On the other hand, based on the above description about this integrated optical film, the integrated optical film which concerns on the 1st-8th Example of this application is examined. However, the integrated optical film implemented through the present disclosure is not limited only to the first to eighth embodiments, and may be implemented in various embodiments corresponding to the description of the integrated optical film described above.

First, referring to FIGS. 7 and 8, the integrated optical film 120 according to the first embodiment of the present disclosure may include a base layer 9, a first layer 1, a first curable adhesive layer 91, and a second layer. It includes (2).

Here, the first layer 1 may be a diffusion layer, and the second layer 2 may be a refractive layer.

The diffusion layer may perform a function of diffusing light transmitted from the lower side and transmitting the light to the upper side, and the refraction layer may perform a function of refracting (condensing) the light transmitted from the lower side and transmitting the light to the upper side. However, the diffusion layer may adjust the degree of light diffusion as needed, and in a device in which light diffusion is to be made slightly smaller, light transmission may be performed at a level between diffusion and condensation. In addition, the refractive layer can likewise adjust the degree of condensing as necessary.

In addition, the pattern 11 of the first layer 1 may have a concave shape.

For example, referring to FIGS. 7 and 8, the concave pattern 11 of the first layer 1 may be formed in a groove recessed downward from the top surface of the layer 3 of the first layer 1. Can be. The light transmitted through the base layer 9 may be transmitted to the upper second layer 2 in a more uniformly diffused state through the concave pattern 11 formed in the first layer.

The shape of the pattern 11 applied to the diffusion layer is not limited to the concave shape as described above, and may be set in various forms in consideration of efficient light diffusion and luminance improvement.

In addition, the arrangement method of the pattern 11 may also be set in consideration of the desired degree of light diffusion, the necessity of ensuring luminance, and the like. For example, the pattern 11 may be arranged regularly. For example, as illustrated in FIG. 14A, the pattern 11 may be arranged in a honeycomb structure in which one pattern 11 surrounds six other patterns 11. Alternatively, referring to FIG. 14B, the pattern 11 may be formed randomly.

The pattern 21 of the second layer 2 may have a prism pillar shape extending in the length direction of the second layer 2.

The prism column shape may be formed such that the vertex has a triangular shape (prism shape) facing upward. By way of example, the peak angle of a conventional prism is approximately 90 degrees, and it may be desirable to have a value smaller than 90 degrees for more efficient light refraction. However, the shape of the prism pillar need not be limited to a triangular shape, and may be formed in various shapes (angles and pitches) as necessary, such as a refractive direction. In addition, although not shown in the drawings, the surface of the prism may be formed with fine concavities and convexities that can further finely adjust the direction of refraction, brightness, light transmittance, etc.

Referring to FIG. 10, the integrated optical film 130 according to the second embodiment of the present disclosure may include a base layer 9, a first layer 1, a first curable adhesive layer 91, a second layer 2, and a first layer. Two curable adhesive layers 92, and a third layer 3 (ie, one optical layer). Here, the first layer 1 may be a diffusion layer, and the second layer 2 and the third layer 3 may be refractive layers. In addition, the pattern 11 of the first layer 1 has a concave shape, the pattern 21 of the second layer 2 has a prism column shape extending in the longitudinal direction of the second layer, and the third layer 3 ) May have a prism pillar shape extending in the width direction of one optical layer 3 to be orthogonal to the prism pillar-shaped pattern of the second layer 2.

Referring to FIG. 11, an integrated optical film 120 according to a third embodiment of the present disclosure may include a base layer 9, a first layer 1, a first curable adhesive layer 91, and a second layer 2. Include. Here, the first layer 1 and the second layer 2 may be refractive layers. In addition, the pattern 11 of the first layer 1 has a prism pillar shape extending in the longitudinal direction of the first layer 1, and the pattern 21 of the second layer 2 is formed of the first layer 1. It may have a prism pillar shape extending in the width direction of the second layer 2 to be orthogonal to the prism pillar shape pattern.

Referring to FIG. 12, the unitary optical film 120 according to the fourth embodiment of the present disclosure may include a base layer 9, a first layer 1, a first curable adhesive layer 91, and a second layer 2. Include. Here, the first layer 1 may be a refractive layer, and the second layer 2 may be a diffusion layer. In this case, the second layer 2 which is a diffusion layer may be provided as a micro lens film. In addition, the pattern 11 of the first layer 1 may have a prism pillar shape extending in the longitudinal direction of the first layer 1, and the pattern of the second layer 2 may have a convex shape.

Referring to FIG. 13, an integrated optical film 120 according to a fifth embodiment of the present disclosure may include a base layer 9, a first layer 1, a first curable adhesive layer 91, and a second layer 2. Include. Here, the first layer 1 and the second layer 2 may be diffusion layers. In this case, the first layer 1 and the second layer 2, which are diffusion layers, may be provided as micro lens films. In addition, the pattern 11 of the first layer 1 and the pattern 21 of the second layer 2 may be convex.

Referring to FIG. 14, the unitary optical film 120 according to the sixth embodiment of the present disclosure may include a base layer 9, a first layer 1, a first curable adhesive layer 91, and a second layer 2. Include. Here, the first layer 1 may be a composite functional layer, and the second layer 2 may be a diffusion layer.

Here, the composite functional layer means not only refracting or diffusing light, but also a layer having a form of a pattern in which the refraction and diffusion of light can be harmonized by mutually controlling the degree of refraction and the degree of diffusion of light. do. In other words, the composite functional layer may mean a layer in which a refractive sheet and a diffusion sheet are fused, that is, a layer having both a refractive function and a diffusion function.

In this case, the pattern 11 of the first layer 1 may have a truncated cone-shaped pattern 11 to act as such a composite functional layer. In addition, the truncated cone shape means a truncated cone shape or truncated cone shape in which the upper end of the cone is cut off. For example, such a truncated cone shape may have a width (diameter) of a lower end portion of 50 μm, a diameter (width) of an upper end portion (frustum portion) of 2 μm, and a height of 24 μm.

In addition, the pattern 21 of the second layer 2, which is a diffusion layer, may have a concave or convex shape. For example, as shown in FIG. 14, the pattern 21 of the second layer 2 may be convex. For example, the second layer 2, which is a diffusion layer, may be provided as a micro lens film. However, the convex shape is not limited thereto, and may be convex in various sizes and shapes.

Referring to FIG. 15, the integrated optical film 120 according to the seventh embodiment of the present disclosure may include a base layer 9, a first layer 1, a first curable adhesive layer 91, and a second layer 2. Include. Here, the first layer 1 may be a diffusion layer, and the second layer 2 may be a composite functional layer.

In this case, the pattern 11 of the first layer 1, which is a diffusion layer, may have a concave or convex shape. For example, as shown in FIG. 15, the pattern 11 of the first layer 1 may have a concave shape. However, the concave shape is not limited thereto, and may be recessed concave in various sizes and shapes (see FIG. 9B).

In addition, the pattern 21 of the second layer 2, which is a composite functional layer, may have a truncated cone shape.

Referring to FIG. 16, an integrated optical film 120 according to an eighth embodiment of the present disclosure may include a base layer 9, a first layer 1, a first curable adhesive layer 91, and a second layer 2. Include. Here, the first layer 1 may be a composite functional layer, and the second layer 2 may be a refractive layer.

In this case, the pattern 11 of the first layer 1, which is a composite functional layer, may have a truncated cone shape.

In addition, the pattern 21 of the second layer 2, which is a diffusion layer, may have a prism pillar shape extending in the length direction of the second layer 2.

The above description of the present application is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present application. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present application is indicated by the following claims rather than the above description, and it should be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalents are included in the scope of the present application.

Claims

In the integrated optical film manufacturing method,

(a) coating the curable resin on the first mold having the pattern;

(b) covering the substrate layer on an upper surface of the resin coated on the first mold;

(c) projecting light onto the resin covered with the base layer to form a first layer that is temporarily cured or fully cured;

(d) coating the curable resin on the second mold having the pattern;

(e) Covering the first curable adhesive layer, the release film is laminated on the upper surface of the resin coated on the second mold, and then the light for the temporary curing on the resin covered with the first curable adhesive layer, the temporary curing state Forming a second layer of the;

(f) removing the release film on the first curable adhesive layer, and laminating the first layer and the base layer separated from the first mold to contact the first layer on the first curable adhesive layer; And

(g) projecting light onto the second layer, the first curable adhesive layer, the first layer, and the substrate layer to integrate the second layer, the first curable adhesive layer, the first layer, and the substrate layer; And separating the second mold to form a two-layer optical film.
The method of claim 1,

The first curable adhesive layer has adhesiveness or adhesiveness and is cured by any one of ultraviolet (UV) and infrared (IR).
The method of claim 1,

The first curable adhesive layer is a one-piece optical film manufacturing method of the late adhesive strength is greater than the initial adhesive strength.
The method of claim 1,

The light projected in the step (g) is a light for the complete curing of the integrated optical film manufacturing method.
The method of claim 1,

Before step (g),

Further comprising passing the second mold, the second layer, the first curable adhesive layer, the first layer, and the substrate layer between rolls spaced from each other,

The gap between the rolls is less than or equal to the total thickness of the second mold, the second layer, the first curable adhesive layer, the first layer, and the substrate layer.
The method of claim 1,

The light projected in the step (g) is light for temporary curing or complete curing,

After step (g),

(h) coating the curable resin on the third mold having the pattern;

(i) a temporary curing state by covering a second curable adhesive layer having a release film laminated thereon on an upper surface of a resin coated on the third mold, and then projecting light for temporary curing onto the resin covered with the second curable adhesive layer. Forming a third layer of the;

(j) removing the release film on the second curable adhesive layer and laminating the two-layer optical film such that the second layer is in contact with the second curable adhesive layer; And

(k) projecting light onto the third layer, the second curable adhesive layer, and the two-layer optical film to integrate the third layer, the second curable adhesive layer, and the two-layer optical film and to form the third mold. The method of manufacturing an integrated optical film further comprising the step of separating to form a three-layer optical film.
The method of claim 6,

The second curable adhesive layer has adhesiveness or adhesiveness and is cured by any one of ultraviolet (UV) and infrared (IR).
The method of claim 7, wherein

The second curable adhesive layer is a one-piece optical film manufacturing method of the late adhesive strength compared to the initial adhesive strength.
The method of claim 7, wherein

The light projected in the step (k) is a light for complete curing of the integrated optical film manufacturing method.
The method of claim 7, wherein

Before step (k),

Passing the third mold, the third layer, the second curable adhesive layer, and the two-layer optical film through rolls spaced from each other,

The gap between the rolls is less than or equal to the total thickness of the third mold, the third layer, the second curable adhesive layer, and the two-layer optical film.
The method of claim 7, wherein

Repeating the steps (h) to (k) to form an n-layer optical film,

The light projected on the nth layer and the (n-1) th layer optical film of the light projected for each of the repeated (k) steps to form the n-layer optical film is light for complete curing, and the remaining light is temporarily hardened. Or light for complete curing.
In the integrated optical film manufacturing method,

(a) coating the curable resin on the first mold having the pattern;

(b) covering the substrate layer on an upper surface of the resin coated on the first mold;

(c) projecting light onto the resin covered with the base layer to form a first layer that is temporarily cured or fully cured;

(d) coating the curable resin on the second mold having the pattern;

(e) planarizing the upper surface of the resin coated on the second mold with a release roll or a release film to planarize, and projecting light for temporary hardening onto the resin coated on the second mold, thereby providing a second layer in a temporary curing state; Forming an upper surface of the second curable adhesive layer on the upper surface of the second layer in a temporary curing state;

(f) removing the release film on the first curable adhesive layer, and laminating the first layer and the base layer separated from the first mold to contact the first layer on the first curable adhesive layer; And

(g) projecting light onto the second layer, the first curable adhesive layer, the first layer, and the substrate layer to integrate the second layer, the first curable adhesive layer, the first layer, and the substrate layer; And separating the second mold to form a two-layer optical film.
The method of claim 12,

The first curable adhesive layer has adhesiveness or adhesiveness and is cured by any one of ultraviolet (UV) and infrared (IR).
The method of claim 13,

The first curable adhesive layer is a one-piece optical film manufacturing method of the late adhesive strength is greater than the initial adhesive strength.
The method of claim 12,

The light projected in the step (g) is a light for the complete curing of the integrated optical film manufacturing method.
The method of claim 12,

Before step (g),

Further comprising passing the second mold, the second layer, the first curable adhesive layer, the first layer, and the substrate layer between rolls spaced from each other,

The gap between the rolls is less than or equal to the total thickness of the second mold, the second layer, the first curable adhesive layer, the first layer, and the substrate layer.
The method of claim 12,

The light projected in the step (g) is light for temporary curing or complete curing,

After step (g),

(h) coating the curable resin on the third mold having the pattern;

(i) projecting light for precure to the resin coated on the third mold to form a precured third layer, and then the second curable adhesive layer having a release film laminated on the upper surface of the precured state Covering the top surface of the third layer;

(j) removing the release film on the second curable adhesive layer and laminating the two-layer optical film such that the second layer is in contact with the second curable adhesive layer; And

(k) projecting light onto the third layer, the second curable adhesive layer, and the two-layer optical film to integrate the third layer, the second curable adhesive layer, and the two-layer optical film and to form the third mold. The method of manufacturing an integrated optical film further comprising the step of separating to form a three-layer optical film.
The method of claim 17,

The second curable adhesive layer has adhesiveness or adhesiveness and is cured by any one of ultraviolet (UV) and infrared (IR).
The method of claim 18,

The second curable adhesive layer is a one-piece optical film manufacturing method of the late adhesive strength compared to the initial adhesive strength.
The method of claim 17,

The light projected in the step (k) is a light for complete curing of the integrated optical film manufacturing method.
The method of claim 17,

Before step (k),

Passing the third mold, the third layer, the second curable adhesive layer, and the two-layer optical film through rolls spaced from each other,

The gap between the rolls is less than or equal to the total thickness of the third mold, the third layer, the second curable adhesive layer, and the two-layer optical film.
The method of claim 17,

Repeating the steps (h) to (k) to form an n-layer optical film,

The light projected on the nth layer and the (n-1) th layer optical film of the light projected for each of the repeated (k) steps to form the n-layer optical film is light for complete curing, and the remaining light is temporarily hardened. Or light for complete curing.
The method according to claim 1 or 12, wherein

The first layer is a diffusion layer,

The second layer is a refractive layer,

The pattern of the first layer is concave,

The pattern of the second layer has a prism pillar shape extending in the longitudinal direction of the second layer.
The method according to claim 6 or 17,

The first layer is a diffusion layer,

The second layer is a refractive layer,

The pattern of the first layer is concave,

The pattern of the second layer is a prism pillar shape extending in the longitudinal direction of the second layer,

The pattern of the third layer is a prism pillar shape extending in the width direction of the third layer to be orthogonal to the prism pillar-shaped pattern of the second layer.
The method according to claim 1 or 12, wherein

The first and second layers are refractive layers,

The pattern of the first layer is a prism pillar shape extending in the longitudinal direction of the first layer,

The pattern of the said 2nd layer is a prism pillar shape extended in the width direction of the said 2nd layer so that it may orthogonally cross the pattern of the prism pillar shape of the said 1st layer.
The method according to claim 1 or 12, wherein

The first layer is a refractive layer,

The second layer is a diffusion layer,

The pattern of the first layer is a prism pillar shape extending in the longitudinal direction of the first layer,

The pattern of the said 2nd layer is a one-piece optical film manufacturing method of the convex shape.
The method of claim 26,

The diffusion layer is a one-piece optical film manufacturing method that is provided with a micro lens film.
The method according to claim 1 or 12, wherein

The first and second layers are diffusion layers,

The pattern of the first and second layers is a convex shape manufacturing method.
The method of claim 28,

The diffusion layer is a one-piece optical film manufacturing method that is provided with a micro lens film.
The method according to claim 1 or 12, wherein

The first layer is a composite functional layer,

The second layer is a diffusion layer,

The pattern of the first layer has a cone shape truncated so that the refraction and diffusion of the light is complex,

The pattern of the second layer is a concave or convex shape of the manufacturing method of the unitary optical film.
The method of claim 30,

When the pattern of the second layer is a convex shape, the diffusion layer is provided with a micro lens film.
The method according to claim 1 or 12, wherein

The first layer is a diffusion layer,

The second layer is a composite functional layer,

The pattern of the first layer is concave or convex,

The pattern of the second layer is a method of manufacturing an integrated optical film having a cone shape truncated so that the refraction and diffusion of light is complex.
The method according to claim 1 or 12, wherein

The first layer is a composite functional layer,

The second layer is a refractive layer,

The pattern of the first layer has a cone shape truncated so that the refraction and diffusion of the light is complex,

The pattern of the second layer has a prism pillar shape extending in the longitudinal direction of the second layer.