WO2015174720A1 - Élément de motif optique et son procédé de fabrication - Google Patents

Élément de motif optique et son procédé de fabrication Download PDF

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Publication number
WO2015174720A1
WO2015174720A1 PCT/KR2015/004745 KR2015004745W WO2015174720A1 WO 2015174720 A1 WO2015174720 A1 WO 2015174720A1 KR 2015004745 W KR2015004745 W KR 2015004745W WO 2015174720 A1 WO2015174720 A1 WO 2015174720A1
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Prior art keywords
acrylate
adhesive layer
pattern
dot
forming
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PCT/KR2015/004745
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English (en)
Korean (ko)
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황장환
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황장환
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Publication of WO2015174720A1 publication Critical patent/WO2015174720A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/06—Polyurethanes from polyesters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers

Definitions

  • 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.
  • 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.
  • 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
  • the present invention provides an optical pattern member and a method of manufacturing the same that can improve the light efficiency.
  • this invention provides the optical pattern member manufacturing method which can form a pattern efficiently on a point / adhesive layer.
  • the optical pattern member according to an embodiment of the present invention is a release film; A first dot / adhesive layer arranged on the release film; And a pattern arranged on the first dot / adhesive layer.
  • the first dot / adhesive layer and the pattern are transferred to the target element.
  • An optical pattern member manufacturing method comprises the steps of applying and curing a point / adhesive on the base film to form a first structure formed with a first point / adhesive layer 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 the resin layer of the second structure with a pattern forming portion.
  • 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.
  • 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.
  • 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 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.
  • one of the lamination rollers is a metal roller and the other is a rubber roller.
  • Method for forming a dot / adhesive layer 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 °.
  • 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.
  • the light efficiency may be improved when the optical pattern member is attached to the target element.
  • 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.
  • 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.
  • expensive pattern forming rollers may not be damaged.
  • 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.
  • FIG. 1 is a cross-sectional view showing an optical pattern member according to an embodiment of the present invention.
  • FIG. 2 is a view showing the shape of a pattern according to an embodiment of the present invention.
  • FIG 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.
  • FIG. 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.
  • FIG. 8 is a diagram illustrating a process of manufacturing an optical pattern member according to a first embodiment of the present invention.
  • FIG. 9 is a diagram illustrating a process of forming a pattern.
  • FIG. 10 is a view illustrating a process of manufacturing an optical pattern member according to a second embodiment of the present invention.
  • 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.
  • 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.
  • FIG. 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
  • FIG. 4 is a cross-sectional view illustrating a structure of attaching a general optical pattern member on a target element.
  • 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.
  • 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.
  • 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.
  • 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.
  • the viscosity of the first point / adhesive layer 102 is optionally available in the range of 1 to 2,000 cps.
  • the first dot / adhesive layer 102 may be 1 to 500 cps.
  • 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.
  • 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.
  • the pattern 104 in the optical pattern member may be formed directly on the first dot / adhesive layer 102.
  • 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.
  • 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.
  • the pattern 104 can be directly formed on the first dot / adhesive layer 102 through the process described later.
  • 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.
  • 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.
  • the release property of the release film may be lowered.
  • 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.
  • 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.
  • first point / adhesive layer 102 or the second point / adhesive layer 106 will be described in detail.
  • first point / adhesive layer 102 will be taken as an example.
  • Polyurethane acrylate oligomer is a mixture of diisocyanate and polyol in the reactor to synthesize a urethane pre-polymer (Pre-polymer).
  • Pre-polymer The structure of the synthesized urethane prepolymer is represented by the following formula (1).
  • n is an integer from 1 to 10
  • Y is a polyol
  • R is a diisocyanate
  • 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.
  • n is an integer from 1 to 10
  • Y is a polyol
  • R is a diisocyanate
  • 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.
  • 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.
  • 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.
  • 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 ⁇ -caprolactone.
  • the polyether polyol is used by polymerizing a single molecule of propylene epoxide and tetramethylene epoxide, respectively, or by mixing.
  • diisocyanate examples 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-
  • 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.
  • 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,
  • 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.
  • n is an integer from 1 to 5
  • m is an integer from 1 to 10
  • R is a hydrogen atom or an aliphatic or aromatic hydrocarbon having 1 to 12 carbon atoms.
  • 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.
  • R is an aliphatic or aromatic hydrocarbon having 5 to 50 carbon atoms, with or without heterocycles
  • A is a (meth) acrylate group.
  • 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.
  • 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.
  • the polyurethane acrylate oligomer in the composition of the first point / adhesive layer 102 was 0.15 g of dibutyltin dilaurate 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.
  • 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.
  • Table 1 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 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100
  • the viscosity was measured at 25 ° C. using a rotatable viscometer according to JIS K7117, the refractive index was measured using a light source of 589 nm of the refractometer (ABBE), and the adhesive force was 25 using a SUS304 plate according to KS T 1028. Adhesion at °C was measured.
  • the coating property is to apply the composition on the release film, apply it at 10 ⁇ m using a bar coater, and then visually observe the surface after 10 seconds. If not, it is classified as good.
  • thermo-hygrostat 60 °C, 90% RH
  • 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.
  • 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.
  • 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 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 6 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 6 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 6 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. .
  • 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. .
  • Example 6 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. .
  • Example 6 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. .
  • Example 6 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. .
  • Example 6 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.
  • Viscosity, refractive index, and adhesive force were measured on the same conditions as Example 1.
  • the viscosity in Examples 6 to 10 was 1080 to 1400 cps, the refractive index was 1.4947 to 1.5111, the adhesion is 167 to 195gf / 25mm viscosity and refractive index is good, excellent adhesion could know.
  • the viscosity in Comparative Examples 6 to 10 was higher than those 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.
  • the upper film 108 is not shown for convenience of description.
  • 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.
  • 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.
  • 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.
  • 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.
  • the optical pattern member from which the base film 100 is removed may be attached to various optical elements and used.
  • FIG 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.
  • the base film 100 is assumed to be a release film.
  • 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.
  • 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.
  • 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.
  • 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 °. 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.
  • the first dot / adhesive layer 102 may not be uniformly formed on 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.
  • 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.
  • 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.
  • an intaglio for pattern formation may be formed on an outer circumferential surface of the pattern forming roller 814.
  • 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.
  • the third structure is pressed by the pressure roller 818 and then conveyed in the direction of the lamination rollers 840 and 842.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the optical pattern member is transferred to the take-up roller 838 by the transfer roller 836 and then wound up.
  • 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.
  • 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.
  • 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.
  • FIG. 10 is a view illustrating a process of manufacturing an optical pattern member according to a second embodiment of the present invention.
  • the base film 100 is assumed to be a release film.
  • 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.
  • 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.
  • 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
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the fifth structure is conveyed to the lamination rollers 1060 and 1062 by a transfer roller 1042.
  • 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.
  • 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.
  • one of the lamination rollers 840 and 842 may be a metal roller and the other may be a rubber roller.
  • the optical pattern member is transferred to the take-up roller 1048 by the transfer roller 1046 and then wound up.

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un élément de motif optique, qui peut améliorer l'efficacité optique, et son procédé de fabrication. Le procédé de fabrication de l'élément de motif optique comprend les étapes consistant : à former une première structure ayant une première couche adhésive sensible à la pression ou un premier adhésif formé sur un film de base par application et durcissement d'un adhésif ou d'un agent adhésif sensible à la pression sur le film de base ; à former une seconde structure ayant une couche de résine formée sur la première structure par application d'une résine sur la première structure ; à former un motif sur la première couche adhésive sensible à la pression ou sur le premier adhésif par formation d'une couche de résine de la seconde structure avec une partie de formation de motif. Dans ce procédé, la résine n'est pas injectée dans la partie de formation de motif, mais est appliquée sur la première structure avant que la première structure ne soit transférée à la partie de formation de motif.
PCT/KR2015/004745 2014-05-14 2015-05-12 Élément de motif optique et son procédé de fabrication WO2015174720A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2014-0057734 2014-05-14
KR1020140057734A KR20150130755A (ko) 2014-05-14 2014-05-14 광학 패턴 부재 및 이의 제조 방법

Publications (1)

Publication Number Publication Date
WO2015174720A1 true WO2015174720A1 (fr) 2015-11-19

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PCT/KR2015/004745 WO2015174720A1 (fr) 2014-05-14 2015-05-12 Élément de motif optique et son procédé de fabrication

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KR (1) KR20150130755A (fr)
WO (1) WO2015174720A1 (fr)

Cited By (1)

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CN116554826A (zh) * 2023-05-06 2023-08-08 浙江东腾新材料有限公司 一种静音轮胎专用耐高低温胶黏剂及其制备方法

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KR20170112239A (ko) * 2016-03-31 2017-10-12 동우 화인켐 주식회사 이송장치
KR102031417B1 (ko) * 2016-08-26 2019-11-08 주식회사 애스크와이 플렉서블 디스플레이용 광학 기판 소재

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US20080191371A1 (en) * 2005-06-16 2008-08-14 Tetsuya Matsuyama Pattern Copying Apparatus, Pattern Copying Method and Peeling Roller
KR20100037334A (ko) * 2008-10-01 2010-04-09 주식회사 파인텍 광학/전자 구조물을 갖는 디스플레이장치의 제조방법
KR20110105486A (ko) * 2010-03-19 2011-09-27 주식회사 신광화학산업 자외선 경화형 폴리우레탄 접착제, 이의 제조방법 및 이를 이용한 액정디스플레이장치 접착방법
KR20120069796A (ko) * 2010-12-21 2012-06-29 주식회사 파인텍 패턴필름 및 그 제조방법
KR20130045003A (ko) * 2011-10-25 2013-05-03 엘지디스플레이 주식회사 광학 렌즈 패널, 이의 제조 장치 및 제조 방법

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Publication number Priority date Publication date Assignee Title
US20080191371A1 (en) * 2005-06-16 2008-08-14 Tetsuya Matsuyama Pattern Copying Apparatus, Pattern Copying Method and Peeling Roller
KR20100037334A (ko) * 2008-10-01 2010-04-09 주식회사 파인텍 광학/전자 구조물을 갖는 디스플레이장치의 제조방법
KR20110105486A (ko) * 2010-03-19 2011-09-27 주식회사 신광화학산업 자외선 경화형 폴리우레탄 접착제, 이의 제조방법 및 이를 이용한 액정디스플레이장치 접착방법
KR20120069796A (ko) * 2010-12-21 2012-06-29 주식회사 파인텍 패턴필름 및 그 제조방법
KR20130045003A (ko) * 2011-10-25 2013-05-03 엘지디스플레이 주식회사 광학 렌즈 패널, 이의 제조 장치 및 제조 방법

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116554826A (zh) * 2023-05-06 2023-08-08 浙江东腾新材料有限公司 一种静音轮胎专用耐高低温胶黏剂及其制备方法
CN116554826B (zh) * 2023-05-06 2024-01-05 浙江东腾新材料有限公司 一种静音轮胎专用耐高低温胶黏剂及其制备方法

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