KR102045143B1 - Optical pattern member and method of manufacturing the same - Google Patents

Abstract

Disclosed are an optical pattern member and a method of manufacturing the same, which can improve light efficiency. The method of manufacturing an optical pattern member includes applying and curing a dot / adhesive on a base film to form a first structure having a first dot / adhesive layer formed on the base film, and applying a resin on the first structure to apply the resin to the first structure. Forming a second structure having a resin layer formed thereon and forming a pattern on the first point / adhesive layer by molding the resin layer of the second structure with a pattern forming unit. Here, the resin is applied onto the first structure before the first structure is transferred to the pattern forming portion without being injected into the pattern forming portion.

Description

Optical pattern member and its manufacturing method {OPTICAL PATTERN MEMBER AND METHOD OF MANUFACTURING THE SAME}

The present invention relates to an optical pattern member and a method of manufacturing the same.

The pattern film may be attached to a display panel or the like, and generally has a structure in which an adhesive layer, a PET layer, and a pattern are sequentially formed on a base film.

That is, since there was no way to form the pattern on the adhesive layer, a PET layer was needed to form the pattern. However, when such a pattern film is used for a display panel or the like, the light output from the display panel can be down to about 60% while passing through the base film, the adhesive layer, the PET layer and the pattern. That is, a problem occurs that the light efficiency is considerably lowered.

In order to solve this problem, a method of using a release film as a base film and forming a pattern directly on the release film may be considered, but in such a structure, in order to form a pattern on the release film, the adhesive force of the release surface of the release film must be controlled. Difficult to control adhesion

Of course, although it is difficult to adjust the adhesion of the release surface of the release film, it is difficult to form a pattern on the release film because the adhesion of the metal and the pattern is greater. In addition, by controlling the adhesion of the release film, when the pattern is transferred to the display panel after the release film is released, release property of the release film may be lowered.

That is, there is no suitable technique to form the pattern directly on the release film.

Korean Laid-Open Patent Publication No. 2014-0022890 (published: February 25, 2014)

The present invention provides an optical pattern member and a method of manufacturing the same that can improve the light efficiency.

Moreover, this invention provides the optical pattern member manufacturing method which can form a pattern efficiently on a point / adhesive layer.

In order to achieve the object as described above, the optical pattern member manufacturing method according to an embodiment of the present invention is applied to the base film to the point / adhesive and cured to form a first structure formed with a first point / adhesive layer on the base film Forming; Applying a resin on the first structure to form a second structure having a resin layer formed on the first structure; And forming a pattern on the first dot / adhesive layer by molding the resin layer of the second structure with a pattern forming portion. Here, the resin is applied onto the first structure before the first structure is transferred to the pattern forming portion without being injected into the pattern forming portion.

In the method of manufacturing an optical pattern member according to another exemplary embodiment of the present invention, a dot / adhesive is applied on a release surface of a release film conveyed by rotation of a dot / adhesive layer forming roller and cured to form a first dot / adhesive layer on the release film. Forming a first structure; And forming a pattern by applying and molding a resin on the first structure. Here, the first structure is formed by ultraviolet curing the release film on which the point / adhesive layer is formed after the coating and before the point / adhesive layer forming roller rotates by 50 °.

Optical pattern member manufacturing method according to another embodiment of the present invention comprises the steps of sequentially forming a first dot / adhesive layer and a pattern on the base film to form a first structure; Forming a second structure by forming a second dot / adhesive layer on the upper film; And laminating the first structure and the second structure using lamination rollers to generate an optical pattern member. Here, one of the lamination rollers is a metal roller and the other is a rubber roller.

Method for forming a dot / adhesive layer according to an embodiment of the present invention comprises the steps of applying the adhesive / adhesive layer on the release surface of the release film carried by the dot / adhesive layer forming roller; And curing the release film on which the dot / adhesive layer is formed after the application and before the dot / adhesive layer forming roller rotates by 50 °.

According to another embodiment of the present invention, a method of manufacturing an optical pattern member includes applying a dot / adhesive to a release surface of a first release film to form a first dot / adhesive layer on the first release film; Forming and curing a second release film on the first dot / adhesive layer to form a first structure; Removing the second release film from the first structure to form a second structure on which the first dot / adhesive layer is formed; And forming a pattern on the second structure to form a third structure.

In the optical pattern member according to the present invention, since the pattern is directly formed on the dot / adhesive layer, the light efficiency may be improved when the optical pattern member is attached to the target element.

Since the method of manufacturing the optical pattern member of the present invention is applied onto the release surface of the release film and then cured before the dot / adhesive forming roller rotates by 50 °, the point / adhesive is applied on the release surface of the release film. It can be formed uniformly.

Further, in the optical pattern member manufacturing method, since the resin for the pattern is applied on the structure before the structure in which the point / adhesive layer is formed on the release film enters the pattern forming roller, the pattern can be uniformly formed on the point / adhesive layer. In addition, expensive pattern forming rollers may not be damaged.

In addition, the optical pattern member manufacturing method uses a metal roller and a rubber roller as lamination rollers for laminating a structure in which a first point / adhesive layer is formed on a release film and a structure in which a second point / adhesive layer is formed on an upper film. The lamination can be made smoothly.

1 is a cross-sectional view showing an optical pattern member according to an embodiment of the present invention.
2 is a view showing the shape of a pattern according to an embodiment of the present invention.
3 is a cross-sectional view illustrating a process of attaching an optical pattern member on an object according to an embodiment of the present invention.
4 is a cross-sectional view showing a structure of attaching a general optical pattern member on a target element.
5 to 7 are cross-sectional views illustrating various utilization structures of the optical pattern member of the present invention.
8 is a diagram illustrating a process of manufacturing an optical pattern member according to a first embodiment of the present invention.
9 is a diagram illustrating a process of forming a pattern.
10 is a view illustrating a process of manufacturing an optical pattern member according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to an optical pattern member, in particular a pattern film and a method for manufacturing the same, and proposes a method of reliably manufacturing an optical pattern member in which a pattern is directly formed on a point / adhesive for improving light efficiency.

In addition, the present invention proposes a method capable of uniformly forming a dot / adhesive layer on a release surface of a release film, a method of uniformly forming a pattern and preventing damage to an expensive pattern forming roller.

Hereinafter, various embodiments of the optical pattern member of the present invention and a method of manufacturing the same will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing an optical pattern member according to an embodiment of the present invention, Figure 2 is a view showing the shape of a pattern according to an embodiment of the present invention. 3 is a cross-sectional view illustrating a process of attaching an optical pattern member on a target element according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view illustrating a structure of attaching a general optical pattern member on a target element.

Referring to FIG. 1, the optical pattern member of the present embodiment is a member used for an optical element, particularly a display element, and includes a base film 100, a first point / adhesive layer 102, a pattern 104, and a second point / adhesion layer. 106 and top film 108.

The base film 100 is a means for supporting the first adhesive layer 102 on which the pattern 104 is formed. For example, the base film 100 may be a release film, for example, a silicone release film or a urethane release film.

The release film may be prepared by, for example, adding and applying an inorganic particle exhibiting an antistatic effect with a silicone composition on one or both surfaces of a polyester film (PET), and has a uniform peeling force, residual adhesive force, and antistatic performance. This film is very excellent, and has good surface roughness and thickness uniformity, and is suitable for protecting the first adhesive layer 102 because of its excellent applicability to various applications and process conditions.

The first dot / adhesive layer 102 is formed on the base film 100 to attach the pattern 104 to the base film 100, and may be, for example, an adhesive layer or an adhesive layer. The adhesive layer refers to a layer that can be detached from the base film 100 when the adhesive layer is applied on the base film 100 and then cured. It means a layer having strong adhesion to 100).

The first dot / adhesive layer 102 may serve to attach the pattern 104 to the target device after the base film 100 is removed.

According to one embodiment, the first point / adhesive layer 102 comprises (A) 19 to 45 weight percent polyurethane acrylate oligomer; (B) 30 to 60% by weight of acrylate monomers; (C) 19 to 45 weight percent tackifier; (D) 1 to 3 weight percent of photoinitiator; And (E) may include 1 to 3% by weight of the additive.

According to another embodiment, the first point / adhesive layer 102 comprises (A) 20 to 45 weight percent polyurethane acrylate oligomer; (B) 30 to 60% by weight of acrylate monomers; (C) 19 to 45 weight percent tackifier; And (D) may include 1 to 3% by weight photoinitiator.

According to one embodiment, the viscosity of the first point / adhesive layer 102 is optionally available in the range of 1 to 2,000 cps. Preferably, the first dot / adhesive layer 102 may be 1 to 500 cps. When the viscosity of the first point / adhesive layer 102 exceeds 500 cps, the first point / adhesive layer 102 is pushed and accumulated in the process of being pressed by the pressure roller, and part of the first point / adhesive layer 102 is pressed by the pressure. The pattern 104 may be separated from the base film 100 by penetrating between the interfaces formed by the 104. Therefore, in order to minimize such a problem, it may be efficient to make the viscosity of the first point / adhesive layer 102 to 1 to 500 cps.

The pattern 104 may be made of a transparent material in consideration of light efficiency as an element capable of diffusing or condensing light, and is formed on the first dot / adhesive layer 102. The pattern 104 may be a discontinuous pattern or a continuous pattern, as shown in FIG. 2, or may be a regular pattern or an irregular pattern although not shown.

The second dot / adhesive layer 106 is formed on the pattern 104 and may be an adhesive layer or an adhesive layer. The viscosity of the second point / adhesive layer 106 may be optionally used in the range of 1 to 2,000 cps, and may be made of the same component as the first point / adhesive layer 102.

The top film 108 is formed over the second dot / adhesive layer 106 and may be, for example, a protective film, a release film, a base film, or the like. That is, the upper film 108 is not limited, but considering the price, it is effective that the protective film does not have a release surface made of PET or the like.

According to one embodiment, the first point / adhesive layer 102 comprises (A) 19 to 45 weight percent polyurethane acrylate oligomer; (B) 30 to 60% by weight of acrylate monomers; (C) 19 to 45 weight percent tackifier; (D) 1 to 3 weight percent of photoinitiator; And (E) 1-3 weight percent additive, wherein the second point / adhesive layer 106 comprises (A) 20-45 weight percent polyurethane acrylate oligomer; (B) 30 to 60% by weight of acrylate monomers; (C) 19 to 45 weight percent tackifier; And (D) may include 1 to 3% by weight photoinitiator.

In summary, the pattern 104 in the optical pattern member may be formed directly on the first dot / adhesive layer 102.

As shown in FIG. 3A, the optical pattern member includes a base film 100, a first point / adhesive layer 102, a pattern 104, a second point / adhesion layer 106, and an upper film 108. It is manufactured to include, and after the base film 100 is removed as shown in Figure 3 (B) and (C) is attached to the target device, such as an OLED panel as shown in Figure 3 (D) Can be.

Hereinafter, a general pattern film and the optical pattern member of this invention are compared.

A typical pattern film includes a base film 400, an adhesive layer 402, a PET layer 404 and a pattern 406 as shown in FIG. 4. That is, since there is no technique for forming the pattern 406 on the adhesive layer 402, the pattern 406 must be formed on the PET layer 404.

On the other hand, in the optical pattern member of the present invention, the pattern 104 can be directly formed on the first dot / adhesive layer 102 through the process described later.

After the base film 400 is removed from the general pattern film, the PET layer 404 may be attached to the display device as the target device through the adhesive layer 402. At this time, if the light output from the display element passes through the pattern film, the efficiency of the light can be down to about 60% while passing through the adhesive layer 402, PET layer 404 and the pattern 406.

However, the efficiency of light output from the display panel when the pattern 106 is attached to the display panel which is the target element through the first point / adhesive layer 102 after the base film 100 is removed from the optical pattern member of the present invention. While passing through the first point / adhesive layer 102 and the pattern 104, it may be down by about 82%. That is, since the optical pattern member of the present invention does not include a PET layer for supporting the pattern 104, the optical pattern member may be considerably superior in light efficiency as compared with a general pattern film.

Meanwhile, a structure in which a pattern is directly formed on the release surface of the release film without the adhesive layer and an adhesive layer is formed on the pattern may be considered, but in such a structure, the adhesive force of the release surface of the release film should be adjusted to form the pattern on the release film. However, it is quite difficult to control the adhesion of the release surface of the release film. In addition, even if the adhesion of the release surface of the release film is adjusted, since the adhesion between the metal and the pattern is greater, it is difficult to form a pattern on the release film. In addition, by controlling the adhesion of the release film, when the pattern is transferred to the target element after the release film is released, the release property of the release film may be lowered.

However, the present invention forms the pattern 104 on the first point / adhesive layer 102 without directly forming the pattern 104 on the release film 100, and as a result, it is necessary to adjust the adhesion of the release film 100. There is no. In addition, when the pattern 104 is transferred to the target device after the release film 100 is released, the adhesion between the pattern 104 and the target device may be improved due to the first point / adhesive layer 102. Release property of the release film 100 may not be reduced.

Hereinafter, the components of the first point / adhesive layer 102 or the second point / adhesive layer 106 will be described in detail. However, for convenience of explanation, the first point / adhesive layer 102 will be taken as an example.

(A) polyurethane acrylate oligomer

Polyurethane acrylate oligomer is a mixture of diisocyanate and polyol in the reactor to synthesize a urethane pre-polymer (Pre-polymer). The structure of the synthesized urethane prepolymer is represented by the following formula (1).

Wherein n is an integer from 1 to 10, Y is a polyol, and R is a diisocyanate.

After synthesizing the urethane prepolymer, the acrylate monomer is uniformly divided into the reactor and slowly added thereto, and reacted at a reaction temperature of 60 to 80 ° C to synthesize a polyurethane acrylate oligomer. After the reaction is terminated, the structure of the synthesized polyurethane acrylate oligomer is represented by the following Chemical Formula 2.

Wherein n is an integer from 1 to 10, Y is a polyol, R is a diisocyanate and A is an acrylate monomer.

The polyurethane acrylate oligomer preferably has a number average molecular weight in the range of 300 to 10,000. This is because when the molecular weight of the polyurethane acrylate oligomer is less than 300, high hardness and high shrinkage may be caused by high curing density during UV curing, which may lead to reduced adhesion. In addition, when the molecular weight of the polyurethane acrylate oligomer exceeds 10,000, it is difficult to remove the generated bubbles of the composition, the content of the monomer used by the high viscosity oligomer may be reduced to reduce the wettability with the adherend.

In addition, a method of introducing a double bond to the end of the urethane prepolymer synthesized by reacting diisocyanate with a polyol to induce an acrylic reaction by reaction with radicals generated from a photoinitiator decomposed by ultraviolet light is one mole of urethane prepolymer. A prepolymer method is used in which 1 to 2 moles of acrylate monomers are added and reacted with each other.

The polyol is at least one selected from the group consisting of polyester polyols, polycaprolactone polyols, polycarbonate polyols and polyether polyols, or from the group consisting of polyester polyols, polycaprolactone polyols, polyether polyols and polycarbonate polyols. One material selected is mixed with monomolecular diol.

In addition, the polyol has a diol form having two hydroxyl groups, it is preferable to use a number average molecular weight of less than 5,000g / mol. If there is only one hydroxyl group, an additional process is impossible. If there are three or more hydroxyl groups, the possibility of forming a gel by side reaction in the synthesis process becomes very high. In addition, when the number average molecular weight is 5,000g / mol or more, the viscosity rises rapidly during the synthesis of the prepolymer, the smooth synthesis process is difficult, and even if the synthesis is carried out, the process time increases rapidly and acrylic to the prepared prepolymer due to high viscosity Synthesis process in which the rate monomer is bonded may not be performed.

The polyester polyol may be ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, polytetramethylene glycol, tetramethylene glycol, 1,3-butanediol, 1,4-butanediol, 1,6-hexanediol, neopentyl glycol, One of 1,4-cyclohexanedimethanol, 3-methyl-1,8-octanediol, or a polyester polyol produced by reacting an acid with a single molecule diol or a copolymer thereof is used.

Polyols are ethylene glycol, propylene glycol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, neopentylglycol, 1,4-cyclo, as monomolecular diols. Hexane dimethanol, bisphenol A, bisphenol F, reduced bisphenol A, reduced bisphenol F, dicyclopenta diol, tricyclodecanediol are used. Alternatively, the polyol may be at least one selected from a compound having three or more hydroxyl groups in a molecule, that is, glycerol, trimethylolethane, trimethylolpropane, pentaerythritol, sorbose, and sorbitol. Can be mixed and used.

The acid uses one of phthalic acid, isophthalic acid, terephthalic acid, maleic acid, fumalic acid, adipic acid, sebacic acid. The polycaprolactone polyol is used by polymerizing a single molecule ε-caprolactone. The polyether polyol is used by polymerizing a single molecule of propylene epoxide and tetramethylene epoxide, respectively, or by mixing.

Examples of the diisocyanate include 1,3-phenylene diisocyanate, 1,4-phenylene diisocyanate, 2,6-toluene diisocyanate, 2,4-toluene diisocyanate, toluene diisocyanate mixture, naphthalene 1,5-diisocylate Anato, diphenyl oxy 4,4-diisocyanate, 4,4-methylenediphenyl diisocyanate, 2,4-methylenediphenyl diisocyanate, 2,2-diisocyanatodiphenylmethane, diphenylmethane diisocyanate , 3,3-dimethyl-4,4-biphenylene isocyanate, 3,3-dimethoxy-4,4-biphenylene diisocyanate, benzene 1-[(2,4-diisocyanatophenyl) methyl] 3-isocyanato-2-methyl, 2,4,6-triisopropyl-meth-phenylene diisocyanate, 1,4-xylene diisocyanate, 1,3-xylene diisocyanate, 1,3 -Bis (1-isocyanato-1-methylethyl) benzene, 1,4-bis (1-isocyanato-1-methylethyl) benzene, 1,6-hexa Tylene isocyanate, 1,5-diisocyanato-2-methylpentane, methyl 2,6-diisocyanatohexanoate, bis (isocyanatomethyl) cyclohexane, 1,3-bis (isocyane Itomethyl) cyclohexane, 2,2,4-trimethylhexane1,6-diisocyanate, 2,4,4-trimethylhexane 1,6-diisocyanate, 2,5 (6) -trimethyl-1- (isooxy Anatomethyl) -5-isocyanatocyclonehexane, 1,8-diisocyanato-2,4-dimethyloctane, octahydro-4,7-methano-1H-indenodimethyl diisocyanate, 1, Preference is given to using at least one of 1-methylenebis (4-isocyanatocyclohexane).

More preferably, aliphatic 1,6-hexamethylene isocyanate, 1,5-diisocyanato-2-methylpentane, methyl 2,6-diisocyanatohexanoate, bis (isocyanatomethyl) Cyclohexane, 1,3-bis (isocyanatomethyl) cyclohexane, 2,2,4-trimethylhexane 1,6-diisocyanate, 2,4,4-trimethylhexane 1,6-diisocyanate, 2, 5 (6) -trimethyl-1- (isocyanatomethyl) -5-isocyanatocyclolonehexane, 1,8-diisocyanato-2,4-dimethyloctane, octahydro-4,7-meta At least one of no-1H-indenodimethyl diisocyanate, 1,1-methylenebis (4-isocyanatocyclohexane) is used.

Acrylate monomers that can react with urethane prepolymers include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, and (meth) acrylic acid. Using at least one of mite, (meth) acrylamide mixture, beta carboxyethyl acrylate, pentaerythritol triacrylate, trimethylolpropane diallyl ether, pentaerythritol triallyl ether, dipentaerythritol pentaacrylate It is desirable to.

(B) acrylate monomer

The acrylate monomer is diethylaminoethyl acrylate, dimethylaminoethyl acrylate, t-octyl acrylate, N, N-dimethyl acrylamide, N-vinyl caprolactam, N-vinyl pyrrolidone, acryloyl morpholine , Isobutoxymethyl acrylamide, diacetone acrylamide, carbonyl (meth) acrylate, isobonyl (meth) acrylate, tricyclotecanyl acrylate, phenylthioethyl acrylate, 2-phenoxyethyl (meth) acrylate , Dicyclopentanyl acrylate, dicyclopentadiene acrylate, 4-cumylphenoxyethyl acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-methacryloyl oxy ethyl acid phosphate, cyclyl trimethyl Allpropane foam acrylate, o-phenylphenoxyethyl acrylate, methoxypolypropylene glycol acrylate, methoxypolyethylene Recall acrylate, ethoxyethoxyethyl acrylate, methoxyethylene glycol acrylate, polypropylene glycol mono acrylate, polyethylene glycol mono acrylate, cyclohexyl acrylate, benzyl acrylate, epoxydiethylene glycol acrylate, (meth ) Acrylic acid, butoxyethyl acrylate, tetrahydroperfuryl (meth) acrylate, β-methacryloyloxyethylhydrogen salate, styryl acrylate, octadecyl acrylate, undecyl acrylate, isodecyl Acrylate, decyl acrylate, nonyl acrylate, lauryl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isooctyl acrylate, octyl acrylate, heptyl acrylate, hexyl acrylate, isoamyl acrylate Pentyl acrylate, t-butyl acrylate, Isobutyl acrylate, amyl acrylate, butyl acrylate, isopropyl acrylate, propyl acrylate, ethyl acrylate, methyl acrylate, 2-hydroxybutyl (meth) acrylate, 2-hydroxypropyl (meth) acrylic Latex, 2-hydroxyethyl (meth) acrylate, 7-amino-3,7-dimethyloctyl acrylate, N, N-diethyl (meth) acrylamide, N, N'-dimethyl-aminopropyl (meth) Acrylate, trimethylol propanetriacrylate, pentaerythritol triacrylate, bisphenyl fluorene diacrylate, neopentyl glycol diacrylate monomer, bisphenol A di (meth) acrylate, ethylene glycol diacrylate, 1 , 6-hexanediol diacrylate, tripropylene glycol diacrylate, trimethylolpropanetrioxyethyl acrylate, 1,9-nonanediol diacrylate, 1 At least one or more of, 10-decanediol diacrylate, tricyclodecanedimethanol diacrylate and tris (2-hydroxyethyl) isocyanurate diacrylate can be selected and used.

(C) tackifier

The tackifier is for enhancing the adhesiveness of the adhesive composition of the present invention, and the structural formula of the tackifier is represented by the following Chemical Formula 3.

Wherein n is an integer from 1 to 5, m is an integer from 1 to 10, and R is a hydrogen atom or an aliphatic or aromatic hydrocarbon having 1 to 12 carbon atoms.

(D) photoinitiators

Photoinitiator, 2,2-dimethoxy-2-phenyl-acetophenone, xanthone, 1-hydroxycyclohexylphenyl ketone, benzaldehyde, anthraquinone, 3-methylacetophenone, 2,4,6-trimethylbenzoyl-di Phenyl-diphenyl phosphine, 1- (4-isopropyl-phenol) -2-hydroxy-2-methyl propane-l-one, thioxanthone, 4-chlorobenzophenone, 4,4'-dimethoxybenzophenone At least one of 4,4'-diaminobenzophenone, benzoin propyl ether and benzoinethyl ether can be selected and used.

Specifically, the photoinitiator Micure TPO, PBZ, BP, EPD, DETX, BMS, MS-7, HP-8, CP-4, BK-6 and Ciba Geigy's Irgacure 184, 500 , 1173, 2959, MBF, 754, 651, 369, 907, 1300, 4265, 819, 819DW, 2022, 2100, 784, 250, Darocure TPO.

(E) additive

The structural formula of the additive is shown in the following formula (4).

Wherein m and n are integers, R is an aliphatic or aromatic hydrocarbon having 5 to 50 carbon atoms, with or without heterocycles, and A is a (meth) acrylate group.

Hereinafter, the experimental results of the first point / adhesive layer 102 will be described by separating them into adhesive properties and optical properties.

According to a first embodiment, the first point / adhesive layer 102 comprises (A) 19 to 45 weight percent polyurethane acrylate oligomer; (B) 30 to 60% by weight of acrylate monomers; (C) 19 to 45 weight percent tackifier; (D) 1 to 3 weight percent of photoinitiator; And (E) may include 1 to 3% by weight of the additive.

According to a second embodiment, the first point / adhesive layer 102 comprises (A) 20 to 45% by weight of polyurethane acrylate oligomer; (B) 30 to 60% by weight of acrylate monomers; (C) 19 to 45 weight percent tackifier; And (D) may include 1 to 3% by weight photoinitiator.

1) Experimental Example and Comparative Example of Example 1

(1) Example

(A) The polyurethane acrylate oligomer in the composition of the first point / adhesive layer 102 was 0.15 g of dibutyltindilaurate while stirring 348.0 g (2 mole) of 2,4-toluene diisocyanate in a 3 l round bottom flask. (dibutyltindilaurate) was added. At this time, the reaction temperature was maintained at 70 ° C, and 1000.0 g (1 mole) of polyether polyol having a number average molecular weight of 1000 was added to the reactor for 1 hour and 20 minutes, and the reaction temperature was lowered to 50 ° C and subjected to heat during synthesis. 1 g of methylhydroquinone was added as a polymerization inhibitor which may be generated by the reaction. Then, 260.0 g (2 mole) of 2-hydroxyethyl acrylate was slowly added to advance the reaction. The reaction was terminated while maintaining the reaction temperature at 70 ℃ for 2 hours after the end of the input was confirmed that the NCO peak located at 2270cm ^-1 disappeared by infrared spectroscopy, indicating that the hydroxyl group reacted with the isocyanate. The number average molecular weight was confirmed to be 1,600 g / mol using gel permeation chromatography (GPC). Thus, the urethane acrylate oligomer having an average urethane bond number of 4 according to the input ratio was synthesized.

(B) The acrylate monomer used was lauryl acrylate (Han concentrate, LA-001), and (C) the adhesion agent was placed in a 1 L round bottom flask equipped with a condenser and an oil bath (± 0.2 ° C). 212.32 g (2 mole) of dimethylbenzene, 18.16 g (2 mole) of 1,3,5-trioxane, 5.88 g (0.06 mole) of sulfuric acid, and 0.025 g of aluminum chloride were added thereto, and the temperature was raised to 120 ° C. for 12 hours. Stirred. After that, the reaction was terminated by disappearance of the 1,3,5-trioxane characteristic peak of 1180 cm ^{-1 as} a result of IR analysis, and (D) the photoinitiator 1-hydroxycyclohexylphenyl ketone (Miwon Special Chemical, Micure CP-4) Was used.

(E) The additive used Fluorolink AD 1700 of Solvay.

Example 1

In a 250 ml compounder, 19 g of the polyurethane acrylate oligomer, 34 g of acrylate monomer (lauryl acrylate), 45 g of tackifier, 1 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) and 1 g of additive (Fluorolink AD 1700) were added. It was added and stirred at 25 ° C. for 1 hour. Thereafter, the materials were filtered using a filter to obtain the composition of the first point / adhesive layer 102.

Example 2

19 g of polyurethane acrylate oligomer, 60 g of acrylate monomer (lauryl acrylate), 19 g of tackifier, 1 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) and 1 g of additive (Fluorolink AD 1700) were added. It carried out similarly to Example 1.

Example 3

Except 30 g of polyurethane acrylate oligomer, 49 g of acrylate monomer (lauryl acrylate), 19 g of tackifier, 1 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) and 1 g of additive (Fluorolink AD 1700) were added. It carried out similarly to Example 1.

Example 4

Except 38 g of polyurethane acrylate oligomer, 35 g of acrylate monomer (lauryl acrylate), 22 g of tackifier, 3 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) and 2 g of additive (Fluorolink AD 1700) were added. It carried out similarly to Example 1.

Example 5

Except 40 g of polyurethane acrylate oligomer, 30 g of acrylate monomer (lauryl acrylate), 25 g of tackifier, 3 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) and 2 g of additive (Fluorolink AD 1700) were added. It carried out similarly to Example 1.

(2) Comparative Example

Comparative Example 1

Except 49 g of polyurethane acrylate oligomer, 30 g of acrylate monomer (lauryl acrylate), 19 g of tackifier, 1 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) and 1 g of additive (Fluorolink AD 1700) were added. It carried out similarly to Example 1.

Comparative Example 2

Except 14 g of polyurethane acrylate oligomer, 60 g of acrylate monomer (lauryl acrylate), 23 g of tackifier, 2 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) and 1 g of additive (Fluorolink AD 1700) were added. It carried out similarly to Example 1.

Comparative Example 3

Except 40 g of polyurethane acrylate oligomer, 25 g of acrylate monomer (lauryl acrylate), 31 g of tackifier, 2 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) and 2 g of additive (Fluorolink AD 1700) were added. It carried out similarly to Example 1.

Comparative Example 4

Except 19 g of polyurethane acrylate oligomer, 65 g of acrylate monomer (lauryl acrylate), 14 g of tackifier, 1 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) and 1 g of additive (Fluorolink AD 1700) were added. It carried out similarly to Example 1.

Comparative Example 5

Except 19 g of polyurethane acrylate oligomer, 30 g of acrylate monomer (lauryl acrylate), 46 g of tackifier, 2 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) and 3 g of additive (Fluorolink AD 1700) were added. It carried out similarly to Example 1.

The composition ratio of the composition of the first point / adhesive layer 102 according to the above embodiments and comparative examples is shown in Table 1 below.

Unit: g division
Example Comparative example One 2 3 4 5 One 2 3 4 5 (A) polyurethane acrylate oligomer 19 19 30 38 40 49 14 40 19 19 (B) acrylate monomer 34 60 49 35 30 30 60 25 65 30 (C) tackifier 45 19 19 22 25 19 23 31 14 46 (D) photoinitiators One One One 3 3 One 2 2 One 2 (E) additive One One One 2 2 One One 2 One 3 Sum 100 100 100 100 100 100 100 100 100 100

The viscosity, refractive index, adhesive force, coating properties, surface tension and reliability of the first point / adhesive layer 102 prepared by Examples 1 to 5 and Comparative Examples 1 to 5 of Table 1 were measured. Viscosity was measured at 25 ° C. using a rotating viscometer according to the present invention. The refractive index was measured using a light source of 589 nm of a refractometer (ABBE). Measured.

The coating property is to apply the composition on the release film, apply it at 10㎛ using a bar coater, and then visually observe the surface after 10 seconds. If not, it is classified as good.

In addition, the surface tension was measured by the surface tension at 25 ℃ using dyne reagent according to ASTM D-2578, the reliability is the same transparent using a composition of 10㎛ thickness prepared

After two sheets of PET film are laminated and UV cured, and the laminated film is put into a thermo-hygrostat (60 ℃, 90% RH), after 500 hours have elapsed, defects such as whitening and lifting are observed. If not, it is classified as bad, if not good.

The results of the viscosity, refractive index, adhesive force, coating properties, surface force and reliability of the first point / adhesive layer 102 prepared by Examples 1 to 5 and Comparative Examples 1 to 5 are shown in Table 2 below.

division
Example Comparative example One 2 3 4 5 One 2 3 4 5 Viscosity (cPs-25 ° C) 1050 980 1290 1360 1090 1890 1700 1870 1800 1780 Refractive Index (25 ℃) 1.5047 1.5374 1.5328 1.5257 1.5320 1.5468 1.5348 1.5414 1.5102 1.5405 Adhesive force (gf / 25mm) 220 201 250 231 202 208 98 43 75 82 Application characteristics Good Good Good Good Good Bad Good Bad Good Bad Surface tension (mN / m) 27 28 27 27 27 34 28 31 27 29 responsibility Good Good Good Good Good Good Bad Good Bad Bad

As can be seen in Table 2, the viscosity in Examples 6 to 10 was 980 to 1360 cps, the refractive index was 1.5047 to 1.5374, the adhesion was 201 to 250gf / 25mm, the coating properties were good, the surface tension was 27 To 28 mN / m, and reliability was good. Therefore, it was found that the viscosity, refractive index, coating properties, surface tension and reliability were all good, and the adhesive strength was excellent. However, the viscosity in Comparative Examples 1 to 5 is higher than Examples 6 to 10 to be described later, the adhesive force is poor, and the coating properties and the reliability are either poor or all poor, so as to be used as the first point / adhesive layer 102. It was confirmed that it was not suitable for.

2) Experimental Example and Comparative Example of Example 2

(1) Example

The (A) polyurethane acrylate oligomer, (B) acrylate monomer, (C) tackifier and (D) photoinitiator in the composition of the first point / adhesive layer 102 are the first point / adhesive layer 102 of the first embodiment. The same materials as (A) polyurethane acrylate oligomer, (B) acrylate monomer, (C) tackifier and (D) photoinitiator of the composition of) were used.

Example 6

20 g of the polyurethane acrylate oligomer, 34 g of acrylate monomer (lauryl acrylate), 45 g of tackifier and 1 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) were added to a 250 ml compounder for 1 hour at 25 ° C. Stirred. Thereafter, the materials were filtered using a filter to obtain an ultraviolet curable adhesive composition.

Example 7

The same procedure as in Example 6 was carried out except that 20 g of polyurethane acrylate oligomer, 60 g of acrylate monomer (lauryl acrylate), 19 g of tackifier and 1 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) were added. .

Example 8

The procedure was the same as in Example 6 except that 30 g of polyurethane acrylate oligomer, 50 g of acrylate monomer (lauryl acrylate), 19 g of tackifier, and 1 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) were added. .

Example 9

The same procedure as in Example 6 was carried out except that 40 g of polyurethane acrylate oligomer, 35 g of acrylate monomer (lauryl acrylate), 22 g of tackifier and 3 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) were added. .

Example 10

The same procedure as in Example 6 was carried out except that 45 g of polyurethane acrylate oligomer, 30 g of acrylate monomer (lauryl acrylate), 22 g of tackifier and 3 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) were added. .

(2) Comparative Example

Comparative Example 6

The procedure was the same as in Example 6 except that 50 g of polyurethane acrylate oligomer, 30 g of acrylate monomer (lauryl acrylate), 19 g of tackifier and 1 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) were added. .

Comparative Example 7

The same procedure as in Example 6 was carried out except that 15 g of polyurethane acrylate oligomer, 60 g of acrylate monomer (lauryl acrylate), 23 g of tackifier and 2 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) were added. .

Comparative Example 8

The same procedure as in Example 6 was carried out except that 45 g of polyurethane acrylate oligomer, 25 g of acrylate monomer (lauryl acrylate), 28 g of tackifier and 2 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) were added. .

Comparative Example 9

The same procedure as in Example 6 was carried out except that 20 g of polyurethane acrylate oligomer, 65 g of acrylate monomer (lauryl acrylate), 14 g of tackifier and 1 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) were added. .

Comparative Example 10

The procedure was the same as in Example 6 except that 20 g of polyurethane acrylate oligomer, 30 g of acrylate monomer (lauryl acrylate), 48 g of tackifier and 2 g of photoinitiator (1-hydroxycyclohexylphenyl ketone) were added. .

Composition ratios of the first point / adhesive layer 102 of the above embodiments and comparative examples are shown in Table 3 below.

Unit: g division
Example Comparative example 6 7 8 9 10 6 7 8 9 10 (A) polyurethane acrylate oligomer 20 20 30 40 45 50 15 45 20 20 (B) acrylate monomer 34 60 50 35 30 30 60 25 65 30 (C) tackifier 45 19 19 22 22 19 23 28 14 48 (D) photoinitiators One One One 3 3 One 2 2 One 2 Sum 100 100 100 100 100 100 100 100 100 100

The viscosity, refractive index, and adhesive force of the first point / adhesive layer 102 prepared by Examples 6 to 10 and Comparative Examples 6 to 10 of Table 3 were measured. The viscosity, refractive index, and adhesive force were the same as those of Example 1. Measured by.

The results of the viscosity, refractive index and adhesive force of the first point / adhesive layer 102 prepared by Examples 6 to 10 and Comparative Examples 6 to 10 are shown in Table 4 below.

division
Example Comparative example 6 7 8 9 10 6 7 8 9 10 Viscosity (cPs-25 ° C) 1100 1010 1330 1400 1080 1970 1720 1940 1780 1760 Refractive Index (25 ℃) 1.5092 1.5032 1.4947 1.5023 1.5111 1.5168 1.5048 1.5102 1.4987 1.1957 Adhesive force (gf / 25mm) 195 167 175 185 190 87 47 38 40 90

As can be seen in Table 4, the viscosity in Examples 6 to 10 was 1080 to 1400 cps, the refractive index was 1.4947 to 1.5111, the adhesive strength is 167 to 195 gf / 25mm viscosity and refractive index is good, excellent adhesion Could know. However, it was confirmed that the viscosity in Comparative Examples 6 to 10 was higher than that of Examples 6 to 10, and the adhesive force was poor, so that it was not suitable for use as the first point / adhesive layer 102.

5 to 7 are cross-sectional views illustrating various utilization structures of the optical pattern member of the present invention. However, the upper film 108 is not shown for convenience of description.

Referring to FIG. 5, an optical pattern member from which the base film 100 is removed may be attached onto the light emitting surface of the display panel 500 such as an OLED. That is, the first dot / adhesive layer 104 in which the pattern 104 is directly formed without the PET layer may be attached onto the light emitting surface of the display panel 500. In this case, the optical pattern member serves to suppress the reflectance of the glass substrate of the display panel 500 to improve light extraction efficiency, and as a result, the light efficiency of the display panel 500 can be improved.

Referring to FIG. 6, the optical pattern member from which the base film 100 is removed may be attached to an upper surface of the light guide plate 600 as shown in FIG. 6A, and is illustrated in FIG. 6B. As shown in FIG. 6C, the light guide plate 600 may be attached to both surfaces of the light guide plate 600.

Referring to FIG. 7, the optical pattern member from which the base film 100 is removed may be attached to one surface of the diffusion plate 700 to diffuse light.

In summary, the optical pattern member from which the base film 100 is removed may be attached to various optical elements and used.

Hereinafter, a method of manufacturing the optical pattern member of the present invention will be described.

8 is a view illustrating a process of manufacturing an optical pattern member according to a first embodiment of the present invention, Figure 9 is a view showing a process of forming a pattern. However, the base film 100 is assumed to be a release film.

Referring to FIG. 8, the release film 100 is unwound from the winding roller 800 winding the release film 100, and the unwound release film 100 is tensioned by the tension control roller 802. It is then transferred to the first point / adhesive layer forming roller 806 through the conveying roller 804.

Subsequently, the point / adhesive is applied onto the release surface of the release film 100 from the first point / adhesive supply device 808 while the release film 100 is transferred according to the rotation of the first point / adhesive layer forming roller 806. do.

Subsequently, the release film 100 to which the dot / adhesive is applied is cured by the ultraviolet curing device 810, and as a result, the first structure in which the first dot / adhesive layer 102 is formed on the release surface of the release film 100. Is generated.

According to one embodiment, after the point / adhesive is applied onto the release surface of the release film 100 and before the release film 100 rotates the first point / adhesive layer forming roller 806 by 50 °, the point / adhesive is applied. It is efficient that the applied release film 100 is UV cured. This is for the first point / adhesive layer 102 to be uniformly formed on the release film 100. Specifically, after the dot / adhesive is applied on the release surface of the release film 100, when the first dot / adhesive forming roller 806 rotates by 50 ° or more, the dot / adhesive aggregates due to the characteristics of the release film 100. This occurs, and as a result, when the release film 100 coated with the dot / adhesive is rotated by 50 ° or more, the first dot / adhesive layer 102 may not be uniformly formed on the release film 100. Thus, after the point / adhesive is applied onto the release surface of the release film 100, the UV point is cured before the first point / adhesive forming roller 806 rotates by 50 °, in which case the first point / adhesive layer 102 It may be formed uniformly on the release film 100, which was confirmed through experiments.

Subsequently, a first structure in which the first dot / adhesive layer 102 is formed on the release surface of the release film 100 is transferred in the direction of a pattern forming roller (a type of pattern forming portion, 814), and on the first structure during the transfer. The resin for the pattern is supplied from the resin supply device 812, and as a result, a second structure in which the first point / adhesive layer 102 and the resin layer 850 are sequentially formed on the release film 100 is generated.

Subsequently, as the second structure is transferred as the pattern forming roller 814 is rotated, the resin layer 850 is molded (eg, printed) into a desired pattern, and the patterned second structure is then ultraviolet cured. UV curing by the device 816 produces a third structure having a first dot / adhesive layer 102 and a pattern 104 formed on the release film 100.

According to an embodiment, an intaglio for pattern formation may be formed on an outer circumferential surface of the pattern forming roller 814. Of course, a relief may be formed on the outer circumferential surface of the pattern forming roller 814 to form a pattern. That is, the pattern forming roller 814 may be variously modified as long as the pattern 104 is formed.

Subsequently, the third structure is pressed by the pressure roller 818 and then conveyed in the direction of the lamination rollers 840 and 842.

An important point in this pattern formation process is that resin for the pattern is applied before the first structure enters the pattern forming roller 814, as shown in FIG. In general, the process of forming the pattern is performed by the resin supply device 860 injecting the resin for the pattern into the pattern forming roller 814, as shown in FIG. It is hardened by the hardening apparatus 864. However, when the pattern is formed through this method, the resin is not printed all over the dot / adhesive, but part of it remains in the pattern forming roller 814. As a result, the expensive pattern forming roller 814 may be damaged, and the resin may not be uniformly applied on the point / adhesive layer. In other words, a desired pattern cannot be formed on the point / adhesive layer. Further, even if the pattern is formed on the point / adhesive layer, since the pattern forming roller 814 is damaged, the speed of manufacturing the optical pattern member is inevitably lowered.

Therefore, in order to solve this problem, the present invention applies resin onto the first structure before the first structure enters the pattern forming roller 814 without injecting the resin for the pattern into the pattern forming roller 814. do. As a result, a pattern may be formed uniformly on the first dot / adhesive layer 102, the expensive pattern forming roller 814 may not be damaged, and the manufacturing speed of the optical pattern member may not be lowered. This effect was confirmed as an experiment.

Meanwhile, the upper film 108 is unwound from the winding roller 822 wound around the upper film 108, and the unwinded upper film 108 has a second point after the tension is adjusted by the tension adjusting roller 824. / To the adhesive layer forming roller 826. For example, the top film 108 may be a PET film.

A dot / adhesive is then applied onto the top film 108 from the second point / adhesive supply device 828 while the top film 108 is transported by the second point / adhesive layer forming roller 828.

Subsequently, the top film 108 coated with the dot / adhesive is cured by the ultraviolet curing device 830 to form a fourth structure in which the dot / adhesive layer 852 is formed on the top film 108. At this time, since the upper film 108 is a PET film, the upper film 108 coated with dots / adhesives may be ultraviolet cured after the second dot / adhesive layer forming roller 828 is rotated by 50 ° or more. However, when the top film 108 is a release film, the top film 108 to which the dot / adhesive is applied must be UV cured before the second point / adhesive layer forming roller 828 is rotated by 50 °.

The fourth structure is then conveyed to the lamination rollers 840 and 842 by a transfer roller 832.

Subsequently, the third structure in which the first point / adhesive layer 102 and the pattern 104 are sequentially formed on the release film 100 and the fourth structure in which the point / adhesive layer 852 is formed on the upper film 108 are laminated. Transferred and laminated between the lamination rollers 840 and 842 of 834, resulting in a first point / adhesive layer 102, a pattern 104, a second point / adhesive layer 106, and an upper portion over the release film 100. The optical pattern member in which the film 108 was formed sequentially is produced.

According to one embodiment, one of the lamination rollers 840 and 842 may be a metal roller and the other may be a rubber roller. This is for laminating the third structure and the fourth structure with an appropriate force. If the lamination rollers 840 and 842 are both metal rollers, the lamination force is strong so that the elements of the optical pattern member may be crushed, and when the lamination rollers 840 and 842 are both rubber rollers, the lamination force is Weakness may not be smooth. Therefore, it is efficient to use one of the lamination rollers 840 and 842 as the metal roller and the other as the rubber roller.

Subsequently, the optical pattern member is transferred to the take-up roller 838 by the transfer roller 836 and then wound up.

In summary, the optical pattern member forming method of the present invention can uniformly form the first point / adhesive layer 102 and the pattern on the transfer film 100, and can easily realize the lamination process. Specifically, the optical pattern member forming method is to form a point / adhesive layer on the transfer film 100, and then ultraviolet curing before the first point / adhesive layer forming roller 806 is rotated by 50 ° to the first point / adhesive layer ( 102 is uniformly formed on the transfer film 100, and the resin for the pattern is applied onto the second structure before the second structure enters the pattern forming roller 814, onto the first dot / adhesive layer 102. The pattern 104 may be formed uniformly, and damage to the pattern forming roller 814 may be prevented. In addition, the optical pattern member forming method uses one of the lamination rollers 840 and 842 as a metal roller and the other as a rubber roller to smoothly laminate the third and fourth structures to form a desired optical pattern member. Can be generated.

10 is a view illustrating a process of manufacturing an optical pattern member according to a second embodiment of the present invention. However, the base film 100 is assumed to be a release film.

Referring to FIG. 10, the release film 100 is unwound from the winding roller 1000 winding the release film 100, and the unwound release film 100 is tensioned by the tension control roller 1001. It is then transferred to the first point / adhesive layer forming roller 1002.

Then, the point / adhesive is applied onto the release surface of the release film 100 from the first point / adhesive supply apparatus 1004 while the release film 100 is transported by the first point / adhesive layer forming roller 1002.

Then, the release film 1006 is unwound from the winding roller 1006 which wound the release film 1006, and the unwound release film 1006 was rolled up by the transfer roller 1008 with the 1st point | sticker / adhesive layer forming roller ( 1002).

Subsequently, the release film 100 and the release film 1050 on which the first point / adhesive layer 102 is formed are pressed by the pressure roller 1010 and then UV-cured by the ultraviolet curing device 1012, and as a result, the release film A first structure is formed in which the dot / adhesive layer 1060 and the release film 1050 are sequentially formed on the 100.

Subsequently, the upper release film 1050 is removed from the first structure by the film removal roller 1014, and the removed release film 1050 is wound through the transfer rollers 1016 and 1018. Wound and the first structure from which the release film 1050 has been removed is cured by the ultraviolet curing device 1012 to generate a second structure having a first point / adhesive layer 102 on the release surface of the release film 100. do.

That is, compared to the first embodiment, in this embodiment, a release film 1050 is further formed on the first point / adhesive layer 102, and as a result, the first point / adhesion layer forming roller 1002 rotates by 50 ° or more. UV curing can be enabled even after being used. That is, the point / adhesive layer to which the release film 1050 is applied is made uniform, and thus, UV curing can be performed more freely than in the first embodiment. Meanwhile, the release film 100 may be thicker than the release film 1050.

Subsequently, a second structure in which the first dot / adhesive layer 102 is formed on the release surface of the release film 100 is transferred in the direction of the pattern forming roller 1026, and the resin supply device 1022 is placed on the first structure during the transfer. The resin for the pattern is supplied from the resultant, resulting in a third structure in which the first point / adhesive layer 102 and the resin layer 1052 are sequentially formed on the release film 100.

Subsequently, as the third structure passes through the pattern forming roller 1026, the resin layer 1052 is molded into a desired pattern, and is then ultraviolet-cured by the ultraviolet curing device 1027 to form a first film on the release film 100. A fourth structure is formed in which the dot / adhesive layer 102 and the pattern 104 are formed. Meanwhile, the third structure may be pressed by the pressing rollers 1024 and 1028 while passing through the pattern forming roller 1026.

Subsequently, the fourth structure is pressed by the pressure roller 818 and then conveyed in the direction of the lamination rollers 1060 and 1062 of the lamination part 1044.

On the other hand, the upper film 108 is unwound from the winding roller 1032 winding the upper film 108, the unwinded upper film 108 is the second point after the tension is adjusted by the tension control roller 1034 / The adhesive layer forming roller 1036. For example, the top film 108 may be a PET film.

A dot / adhesive is then applied over the top film 108 from the second point / adhesive supply device 1038 while the top film 108 is transported by the second point / adhesive layer forming roller 1036.

Subsequently, the top film 108 coated with the dot / adhesive is cured by the ultraviolet curing device 1040 to form a fifth structure in which the dot / adhesive layer 1062 is formed on the top film 108.

Subsequently, the fifth structure is conveyed to the lamination rollers 1060 and 1062 by a transfer roller 1042.

Subsequently, the fourth structure in which the first point / adhesive layer 102 and the pattern 104 are sequentially formed on the release film 100 and the fifth structure in which the point / adhesive layer 1062 is formed on the upper film 108 are laminated. Are transported and laminated between the fields 1060 and 1062, so that the first point / adhesive layer 102, the pattern 104, the second point / adhesive layer 106 and the top film 108 are sequentially placed on the release film 100. The optical pattern member formed in this way is produced.

According to one embodiment, one of the lamination rollers 840 and 842 may be a metal roller and the other may be a rubber roller.

Subsequently, the optical pattern member is transferred to the take-up roller 1048 by the transfer roller 1046 and then wound up.

The embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art having ordinary knowledge of the present invention may make various modifications, changes, and additions within the spirit and scope of the present invention. Should be considered to be within the scope of the following claims.

100: base film 102: first point / adhesive layer
104: pattern 106: second point / adhesive layer
108: upper film 800: winding roller
802: tension adjusting roller 804: feed roller
806: 1st point / adhesive layer forming roller 808: 1st point / adhesive supply apparatus
810 UV Curing Device 812 Resin Supply Device
814: Pattern Forming Roller 816: UV Curing Device
818: pressure roller 820: feed roller
822: winding roller 824: tension adjusting roller
826: 2nd point / adhesive layer forming roller 828: 2nd point / adhesive supply device
830 ultraviolet curing device 832 transfer roller
840, 842: lamination roller 836: feed roller
838: winding roller

Claims (12)

Applying a dot / adhesive to the base film and curing to form a first structure having a first dot / adhesive layer formed on the base film;
Applying a resin on the first structure to form a second structure having a resin layer formed on the first structure; And
Forming a pattern on the first dot / adhesive layer by molding a resin layer of the second structure with a pattern forming part,
The resin is not injected into the pattern forming portion and is applied onto the first structure before the first structure is transferred to the pattern forming portion,
The base film is a release film, the pattern forming portion is a pattern forming roller in which the outer peripheral surface is engraved or embossed,
Forming the first structure,
Forming a point / adhesive layer by applying the point / adhesive on a release surface of the release film conveyed by rotation of the point / adhesive layer forming roller; And
And ultraviolet-curing the release film having the spot / adhesive layer formed thereon to form the first structure after the coating and before the dot / adhesive layer forming roller rotates by 50 °. delete delete delete delete delete delete delete Applying a dot / adhesive on a release surface of the first release film to form a first dot / adhesive layer on the first release film;
Forming and curing a second release film on the first dot / adhesive layer to form a first structure;
Removing the second release film from the first structure to form a second structure on which the first dot / adhesive layer is formed; And
Forming a pattern on the second structure to form a third structure,
Forming the first point / adhesive layer on the release film,
Forming the first point / adhesive layer by applying the point / adhesive on a release surface of the release film conveyed according to the rotation of the first point / adhesive layer forming roller; And
And ultraviolet curing the release film on which the first dot / adhesive layer is formed after the application and before the dot / adhesive layer forming roller is rotated by 50 °. The method of claim 9, wherein the forming of the pattern comprises:
Applying a resin on the second structure to form a third structure having a resin layer formed on the second structure; And
Forming a pattern on the first dot / adhesive layer by molding a resin layer of the third structure with a pattern forming roller,
And said resin is not directly injected into said pattern forming roller, but is applied onto said second structure before said second structure is transferred to said pattern forming roller.

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