KR102552038B1 - Method for manufacturing the decoration element - Google Patents

Abstract

The present specification relates to a method for manufacturing a decorative member.

Description

Method for manufacturing decorative members {METHOD FOR MANUFACTURING THE DECORATION ELEMENT}

This application relates to a method for manufacturing a decorative member.

For cosmetic containers, various mobile devices, and home appliances, the design of the product, such as color, shape, and pattern, in addition to the product's function, plays a large role in imparting product value to customers. Product preference and price are also influenced by design.

As an example, in the case of a cosmetic compact container, various colors and colors are implemented in various ways and applied to the product. There is a method of giving color to the case material itself and a method of giving a design by attaching a decorative film embodying color and shape to the case material.

However, the conventional color decorative film is manufactured in a sheet-to-sheet method, and there is a problem of poor fairness.

Patent Document 1: Republic of Korea Patent Publication No. 10-2010-0135837

The present specification relates to a method for manufacturing a decorative member.

The present specification includes preparing a substrate;

Forming a pattern layer on one surface of the substrate;

forming an inorganic material layer on the pattern layer; and

Forming a protective layer on the inorganic material layer,

The forming of the pattern layer, the forming of the inorganic layer, and the forming of the protective layer provide a method of manufacturing a decorative member that is performed in a roll-to-roll process.

According to the method for manufacturing a decorative member according to an exemplary embodiment of the present specification, a process process is simplified and process costs are reduced.

In addition, according to the method for manufacturing a decorative member according to an exemplary embodiment of the present specification, the decorative member is manufactured through a roll-to-roll process, thereby manufacturing the decorative member at a low cost and in a short time by a conventional sheet-to-sheet process. can be manufactured

In addition, according to the manufacturing method of the decorative member according to one embodiment of the present specification, it is possible to minimize color deviation according to the position of the inorganic material layer.

1 illustrates a manufacturing method of a decorative member according to an exemplary embodiment of the present specification.
2 shows a manufacturing method of a conventional decorative member.
3 to 5 illustrate a laminated structure of a decorative member according to an exemplary embodiment of the present specification.
6 is a description of the light absorption layer and the light reflection layer.
7 explains the principle of color expression by the light absorption layer and the light reflection layer.
8 to 31 show a decorative member according to an exemplary embodiment of the present specification.

Hereinafter, this specification will be described in detail.

In this specification, "or" indicates the meaning of "and/or", that is, including selectively or all of the listed items, unless otherwise defined.

In the present specification, "layer" means covering 70% or more of the area where the layer exists. It means covering preferably 75% or more, more preferably 80% or more.

In this specification, the "thickness" of a layer means the shortest distance from the lower surface to the upper surface of the layer.

In this specification, "protective layer" means a layer capable of protecting other layers of a decorative member unless otherwise defined. For example, it is possible to prevent deterioration of the inorganic layer in a moisture or heat resistant environment. Alternatively, scratches on the inorganic material layer or the pattern layer due to external factors can be effectively suppressed so that the dichroism of the decorative member can be effectively expressed.

In this specification, the spatially relative terms "one side" and "the other side" may be used to easily describe a correlation between one component and other components as shown in the drawings. Spatially relative terms should be understood as including different orientations of elements in use or operation in addition to the orientations shown in the drawings. For example, when a component shown in the drawings is turned over, a component described as “one side” of another component may be placed on the “other side” of the other component. Thus, the exemplary term "one side" may include both directions above and below. Elements may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

The present specification includes preparing a substrate;

Forming a pattern layer on one surface of the substrate;

forming an inorganic material layer on the pattern layer; and

Forming a protective layer on the inorganic material layer,

The forming of the pattern layer, the forming of the inorganic layer, and the forming of the protective layer provide a method of manufacturing a decorative member that is performed in a roll-to-roll process.

1 shows a manufacturing method of a decorative member of the present specification. According to this, (a) preparing a substrate; (b) forming a pattern layer on one surface of the substrate; (c) forming an inorganic material layer on the pattern layer; and (d) forming a protective layer on the inorganic material layer. At this time, the steps (a) to (d) are performed in a roll-to-roll process.

Existing decorative members used a tint film manufactured through a thermal transfer process. In the case of this product, the tint film itself is expensive and the process is very complicated. The color film manufactured in this way goes through a molding manufacturing process in a sheet unit, and a multilayer thin film with 5 or more layers is manufactured through an evaporation system to realize the deposition color with interference color. Complex multi-layer thin films manufactured through the sheet process act as a cause of large cell-to-cell color deviations. The existing product Tint Color implementation process goes through the ribbon, thermal transfer, and OCA lamination processes in the roll-to-roll process, followed by cutting and primary lamination to proceed with the sheet unit process in the roll process. Then, after UV molding, it goes through a complicated process that requires secondary hardening for tint shielding.

In the present specification, each of the above steps is performed in a roll-to-roll process. In the case of the existing sheet-to-sheet process, decorative members cut into sheets are patterned, deposited, and printed, and protective film lamination processes are performed to prevent the insertion of foreign substances before and after each process. There is a problem to go through. On the other hand, when each process is performed as a roll-to-roll process as in the present invention, the conventional protective film laminating process can be omitted, thereby improving productivity. 2 shows a conventional sheet-to-sheet process. Conventionally, as shown in FIG. 2, the decorative member has been manufactured by a sheet to sheet method, but in this case, there is a problem in that the yield is significantly lowered and the manufacturing cost increases. However, in the case of the roll-to-roll process, since the manufacturing process is based on roll production, there are advantages in that high productivity can be shown, manufacturing yield can be remarkably increased, and manufacturing cost can be lowered.

3 to 5 illustrate a laminated structure of a decorative member manufactured by a manufacturing method according to an exemplary embodiment of the present specification. 3 includes a substrate 1, a pattern layer 2 formed on one surface of the substrate, an inorganic material layer 3 formed on the pattern layer 2, and a protective layer 4 formed on the inorganic material layer. 4 and 5, the inorganic material layer 3 includes a light reflection layer 31 and a light absorption layer 32 sequentially provided from the pattern layer 2 or sequentially from the pattern layer 2 It includes a light absorption layer 32 and a light reflection layer 31 provided.

A method of manufacturing a decorative member according to an exemplary embodiment of the present specification includes preparing a substrate.

In one embodiment of the present specification, the substrate is not particularly limited as long as it is a transparent substrate.

In one embodiment of the present specification, a plastic substrate may be used as the substrate. As the plastic substrate, TAC (triacetyl cellulose); COP (cyclo olefin copolymer), such as a norbornene derivative; PMMA (poly(methyl methacrylate); PC (polycarbonate); PE (polyethylene); PP (polypropylene); PVA (polyvinyl alcohol); DAC (diacetyl cellulose); Pac (polyacrylate); PES (poly ether sulfone); PEEK (polyetheretherketon ); PPS (polyphenylsulfone), PEI (polyetherimide); PEN (polyethylenemaphthatlate); PET (polyethyleneterephtalate); PI (polyimide); PSF (polysulfone); PAR (polyarylate) or amorphous fluororesin, etc. may be used, but are not limited thereto. no.

A method of manufacturing a decorative member according to an exemplary embodiment of the present specification includes forming a pattern layer on one surface of the substrate.

A method of manufacturing a decorative member according to an exemplary embodiment of the present specification includes forming an inorganic material layer on the pattern layer. The inorganic material layer may be formed on the surface of the pattern layer, and the shape of the inorganic material layer may be determined by various shapes of the pattern layer.

A method of manufacturing a decorative member according to an exemplary embodiment of the present specification includes forming a protective layer on the inorganic material layer. The protective layer serves to protect the decorative member by being provided between each layer of the decorative member or at the outermost portion of the decorative member.

In one embodiment of the present specification, the forming of the pattern layer may include preparing a cylindrical roll stamp having a mold in which a pattern is formed on an outer circumferential surface thereof; applying and compressing a curable resin composition between the substrate and the cylindrical roll stamp; and curing the curable resin composition.

In one embodiment of the present specification, the cylindrical roll stamp having a mold having a pattern formed on the outer circumferential surface may include a convex or concave pattern on the outer circumferential surface of the roll stamp, and to form a desired pattern. It can be processed by etching through a known etching method so that the circular arc part includes concave parts and convex parts in a flat cylindrical hard mold. For example, when forming a pattern layer of a prismatic pattern, a cylindrical hard mold having prism-shaped recesses may be used. On the other hand, there is D36000 (manufactured by JPE) as a commercial product of a cylindrical roll stamp.

In one embodiment of the present specification, preparing the cylindrical roll stamp includes providing a mold in which a pattern is formed on an outer circumferential surface of the cylindrical roll stamp.

In one embodiment of the present specification, the step of providing a mold in which a pattern is formed on the outer circumferential surface of the cylindrical roll stamp may be performed by a hard-molding method or a soft-molding method. The hard molding method means forming an intaglio pattern on the outer circumferential surface of the cylindrical drum. In addition, the soft molding method refers to a method of attaching a soft mold including a mold pattern layer on one surface of a mold substrate to an outer circumferential surface of a cylindrical drum.

As the curable resin composition is brought into contact with the tip of the convex portion formed on the outer circumferential surface of the cylindrical roll stamp, the curable resin composition is pushed into the concave portion, and the tip of the convex portion adheres to one surface of the substrate, forming a pattern of the roll stamp. transferred to the substrate.

In one embodiment of the present specification, the cylindrical roll stamp is rotatable to form a pattern layer on one surface of the substrate.

In one embodiment of the present specification, the coating method of applying the UV curable resin composition between the substrate and the cylindrical hard mold is not particularly limited, but for example, spin coating, bar coating, roll coating, gravure coating, or blade coating.

In one embodiment of the present specification, the step of applying the curable resin composition between the substrate and the cylindrical roll stamp may be applying the curable resin composition to the cylindrical roll stamp using a gap roll. When the gap roll is used, the amount of the curable resin composition to be applied can be easily adjusted, so that processability is improved.

In one embodiment of the present specification, when the curable resin composition is applied between the substrate and the cylindrical roll stamp, the surface on which the composition is applied may be at least one of the substrate and the surface of the cylindrical roll stamp facing the substrate. there is. Preferably, it may be a surface facing the substrate of the cylindrical roll stamp.

In one embodiment of the present specification, the curable resin composition may use a photo-curable resin or a thermo-curable resin.

In one embodiment of the present specification, the photocurable resin may be an ultraviolet curable resin.

In one embodiment of the present specification, the ultraviolet curable resin is typically an acrylic polymer, for example, a polyester acrylate polymer, a polystyrene acrylate polymer, an epoxy acrylate polymer, a polyurethane acrylate polymer or a polybutadiene acrylate polymer. , silicone acrylate polymers or alkyl acrylate polymers.

In one embodiment of the present specification, the thermosetting resin may be a silicone resin, a silicon resin, a fran resin, a polyurethane resin, an epoxy resin, an amino resin, a phenol resin, a urea resin, a polyester resin, or a melamine resin.

In one embodiment of the present specification, the curing of the curable resin composition may be performed by irradiating ultraviolet rays or applying heat to the curable resin composition.

In one embodiment of the present specification, the curable resin composition is an ultraviolet curable resin composition, and curing the same may include irradiating the ultraviolet curable resin composition with ultraviolet rays.

In one embodiment of the present specification, the step of irradiating the ultraviolet rays is 500 mJ/cm ² to 1,000 mJ/cm ² at a transport rate of 4 mpm to 12 mpm, 600 UV intensity at a transport rate of 5 mpm to 11 mpm It may be irradiated with an ultraviolet intensity of mJ/cm ² to 900 mJ/cm ² , or an ultraviolet intensity of 700 mJ/cm ² to 800 mJ/cm ² at a transport rate of 6 mpm to 10 mpm. When the above irradiation conditions are satisfied, the degree of curing of the curable resin composition may be excellent, and damage to other components of the decorative member such as the base material may be prevented. At this time, the equipment used when irradiating ultraviolet rays can irradiate ultraviolet rays having a wavelength of 320 nm to 390 nm using Fusion electrodeless D-blub. The mpm means meter per minute.

In one embodiment of the present specification, the step of irradiating ultraviolet rays may be irradiating ultraviolet rays to the surface of the substrate to which the curable resin composition is applied or to the surface opposite to the surface of the substrate to which the curable resin composition is applied. .

In one embodiment of the present specification, in the step of curing the ultraviolet curable resin composition, the base material is 1/10 or more, preferably 1/5 or more, more preferably 1/10 of the total area of the outer circumferential surface of the cylindrical roll stamp. It may be performed in a state of winding 3 or more. When curing is performed under the above conditions, there are advantages in that the composition can be easily cured and a fine pattern can be formed.

In one embodiment of the present specification, the manufacturing method of the decorative member may include releasing the substrate on which the pattern layer is formed from a cylindrical roll stamp.

In one embodiment of the present specification, the curing of the ultraviolet curable resin composition may include a first curing step performed while the substrate is wound around the cylindrical roll stamp; and a secondary curing step performed after releasing the substrate on which the pattern layer is formed from the cylindrical roll stamp.

In one embodiment of the present specification, in the first curing step, ultraviolet rays are irradiated to the other side of the substrate on which the pattern layer is formed, and in the second curing step, ultraviolet rays may be irradiated to the side on which the pattern layer is formed. .

In one embodiment of the present specification, the forming of the pattern layer may be performed in an atmosphere containing at least one inert gas of nitrogen and argon.

In one embodiment of the present specification, the forming of the inorganic material layer may be performed by deposition.

In one embodiment of the present specification, the forming of the inorganic material layer may include sequentially forming a light absorption layer and a light reflection layer on the convex or concave surface.

In one embodiment of the present specification, the step of depositing the inorganic material layer may be 10 °C to 100 °C, preferably 10 °C or more and 80 °C or less, more preferably 10 °C or more and 60 °C or less. When depositing at a temperature lower than the above range, there is a problem in that the deposited inorganic material layer is separated from the adherend during a subsequent process because the adhesion of the materials detached from the target and reaching the adherend to the adherend is lowered, and the temperature higher than the above range In , the material deposited on the adherend may be evaporated again or re-evaporated, resulting in a decrease in the growth rate of the inorganic layer.

In one embodiment of the present specification, the forming of the inorganic material layer may be performed by an evaporation method or a sputtering method. The evaporation method is to evaporate or sublimate a target material using an electron beam or electric filament in a high vacuum chamber (5x10 ^-5 to 1x10 ^-7 Torr) and deposit it on an adherend. The sputtering method is a method in which a target material is deposited on an adherend by plasma generated by flowing a gas such as argon into a vacuum chamber and applying a voltage.

In one embodiment of the present specification, the evaporation method is located in an evaporation boat and crucible containing tungsten (W) or molybdenum (Mo) in a high vacuum state (5x10 ^-5 ~ 1x10 ^-7 Torr) After applying a voltage or increasing the power of an electron beam until evaporation or vaporization of In occurs, it may be performed under a deposition rate condition of 0.1 nm/sec to 10 nm/sec.

In one embodiment of the present specification, process conditions of the sputtering method may satisfy specific conditions in order to achieve the above-described thickness, composition, and the like of the inorganic material layer. In particular, other conditions such as applied power may be adjusted differently according to the distance between the adherend and the sputter target.

In one embodiment of the present specification, the sputtering method is such that the shortest distance d1 between the inorganic material layer and the sputter target is 200 mm or less, and 0.1 W/cm ² to 10 W/cm ² Power applied per unit area of the target applying power for 10 seconds to 1000 seconds under the condition; Preferably, the shortest distance (d1) between the light absorption layer and the sputter target is 200 mm or less, and 0.1 W/cm ² to 5 W/cm ² of power applied per unit area of the target is applied for 10 seconds to 900 seconds. may be authorizing. The denominator unit cm ² of the power condition means that the unit area of the sputter target is 1 cm ² .

In one embodiment of the present specification, the shortest distance d1 between the inorganic material layer and the sputter target may be 10 mm or more and 150 mm or less, preferably 50 mm or more and 120 mm or less.

In one embodiment of the present specification, the shortest distance (d2) between the inorganic material layer and the sputter target is greater than 200 mm, and 1 W/cm ² to 10 W/cm ² Under power conditions applied per unit area of the target, 10 seconds power is applied for between 1200 seconds and 1200 seconds; applying power for 10 seconds to 900 seconds under conditions of power applied per unit area of the target of 1 W/cm ² to 5 W/cm ² ; The shortest distance (d2) between the inorganic layer and the sputter target is greater than 200 mm, and 0.1 W/cm ² to 5 W/cm ² It may be applied for 10 seconds to 900 seconds under the condition that power is applied per unit area of the target. .

In one embodiment of the present specification, the shortest distance (d2) between the inorganic material layer and the sputter target may be 250 mm or more and 1000 mm or less, preferably 300 mm or more and 900 mm or less.

In one embodiment of the present specification, the sputtering method may be 1 mTorr to 100 mTorr, preferably 1 mTorr to 75 mTorr, and more preferably 1 mTorr to 50 mTorr. When the process pressure is higher than the above range during sputtering, the number of sputter gas particles present in the chamber increases and particles emitted from the target collide with the sputter gas particles to lose energy, so the growth rate of the inorganic material layer may decrease. On the other hand, if the process pressure is too low, the energy loss of the island component particles due to the sputter gas particles is reduced, but there is a disadvantage that the inorganic layer or substrate may be damaged by the particles having high energy. Optimal process conditions must be found by adjusting various variables such as the size of the equipment, the distance between the sample position and the target, the type of target, the type and flow rate of gas, and the pressure during the process.

In one embodiment of the present specification, the forming of the inorganic material layer may be performed by a reactive sputtering method in a chamber containing a sputtering gas.

In one embodiment of the present specification, the sputtering method may be to use argon (Ar) or helium (He) as a sputter gas.

In one embodiment of the present specification, the forming of the inorganic material layer may be performed by a reactive sputtering method in a chamber containing a sputter gas and a reactive gas. When a reactive gas is further included in this way, the sputtering method may be referred to as a reactive sputtering method.

In one embodiment of the present specification, oxygen, nitrogen, or a mixed gas thereof may be used as the reactive gas.

In one embodiment of the present specification, in the step of forming the inorganic material layer, the flow rate of the sputter gas may be 10 sccm or more and 300 sccm or less, preferably 20 sccm or more and 200 sccm or less. The sccm means Standard Cubic Centimeer Per minute.

In one embodiment of the present specification, the fraction of the reactive gas to the sputter gas may be 30% or more and 70% or less, preferably 40% or more and 70% or less, and more preferably 50% or more and 70% or less. The fraction of the reactive gas may be calculated as (Q _{reactive gas} / (Q _{sputter gas} + Q _{reactive gas} ) * 100%). The Q _{reactive gas} may mean the flow rate of the reactive gas in the chamber, and the Q _{sputter gas} may be the flow rate of the sputter gas in the chamber.

In one embodiment of the present specification, the driving power of the reactive sputtering method may be 100W or more and 500W or less, preferably 150W or more and 300W or less.

In one embodiment of the present specification, the range of voltage applied in the reactive sputtering method may be 350V or more and 500V. The range of the voltage may be adjusted according to the state of the target, process pressure, driving power (process power), or fraction of reactive gas.

In one embodiment of the present specification, the forming of the protective layer may be performed by a deposition or screen printing process, and the deposition is the same as the formation of the inorganic layer.

In one embodiment of the present specification, the roll-to-roll process may be performed at a conveying speed of 3 mpm to 10 mpm, preferably 4 mpm to 9 mpm, and more preferably 6 mpm to 8 mpm. When the transfer speed range is satisfied, the pattern layer, the inorganic layer, and the protective layer can be smoothly formed, and lifting of each layer can be prevented.

A method of manufacturing a decorative member according to an exemplary embodiment of the present specification may include punching the decorative member into two or more regions. The punching step means cutting the manufactured decorative member to fit the product size in order to laminate it to a product such as a mobile phone. At this time, a Thomson Press Machin (manufactured by DonJin) or a sheet press (TK-6565S-1, Taekyung High Tech) may be used.

In one embodiment of the present specification, the punching may be performed by a roll-to-roll process.

In one embodiment of the present specification, the step of forming a color film layer on one side or the other side of the substrate may be included before the step of forming the pattern layer on one side of the substrate.

In one embodiment of the present specification, the step of forming the color film layer uses a known molding method such as coating a composition for forming a color film or coating a composition for forming a color film on a separate substrate, casting, extruding, or the like. A method of disposing or attaching the color film to a position where the color film can be provided after manufacturing the color film may be used. As the coating method, wet coating or dry coating may be used.

In one embodiment of the present specification, the pigments and dyes that may be included in the color film may be selected from those known in the art as being able to achieve a desired color from the final decorative material, and red-based, yellow One or two or more of pigments and dyes such as purple, blue, blue, and pink may be used. Specifically, perinone-based red dye, anthraquinone-based red dye, methine-based yellow dye, anthraquinone-based yellow dye, anthraquinone-based purple dye, phthalocyanine-based blue dye, thioindigo-based pink dye, iso Dyes such as isoxindigo-based pink dyes may be used alone or in combination. Carbon black, copper phthalocyanine (C.I. Pigment Blue 15:3), C.I. Pigments such as Pigment Red 112, Pigment blue, and Isoindoline yellow may be used alone or in combination. Commercially available dyes or pigments as described above may be used, and for example, materials such as Ciba ORACET and Chokwang Paint Co., Ltd. may be used. The types and colors of the dyes or pigments are just examples, and various known dyes or pigments may be used, thereby realizing more diverse colors.

In one embodiment of the present specification, the matrix resin included in the color film may be materials known as materials such as a transparent film, a primer layer, an adhesive layer, and a coating layer, and are not particularly limited thereto. For example, various materials such as acrylic resins, polyethylene terephthalate resins, urethane resins, linear olefin resins, cycloolefin resins, epoxy resins, and triacetyl cellulose resins may be selected, and copolymers or Mixtures may also be used.

The inorganic material layer may have the same convex portion or concave portion as the surface of the pattern layer described above. The inorganic material layer may have the same gradient as the surface of the pattern layer described above.

The inorganic material layer may include metal. Examples of the inorganic layer include indium (In), titanium (Ti), tin (Sn), silicon (Si), germanium (Ge), aluminum (Al), copper (Cu), nickel (Ni), and vanadium. Choice of (V), Tungsten (W), Tantalum (Ta), Molybdenum (Mo), Neodymium (Nb), Iron (Fe), Chromium (Cr), Cobalt (Co), Gold (Au), and Silver (Ag) It may include one or two or more materials, oxides thereof, nitrides or oxynitrides thereof, and one or two or more materials of carbon and carbon composites. The inorganic material layer may be a single layer or multiple layers including the above material.

The inorganic material layer may have a refractive index of 0 to 8 for light having a wavelength of 400 nm. If the refractive index of the inorganic layer is out of the above range, it may not be suitable because reflected light is reduced and becomes dark. The refractive index of the inorganic layer may be specifically 0 or more, 1 or more, 2 or more, 3 or more, 4 or more, or 4.5 or more, and may be 8 or less, 7 or less, 6 or less, or 6.5 or less.

In one embodiment of the present specification, the thickness of the inorganic material layer may be, for example, 10 nm to 1 μm. When the thickness of the inorganic material layer is within the above range, it may be advantageous to provide a decorative member having dichroic property showing different colors depending on the viewing direction and having improved visibility of the dichroic property. The thickness of the inorganic layer may be, for example, 10 nm or more, 50 nm or more, or 100 nm or more, and 1 μm or less, 800 nm or less, 600 nm or less, 400 nm or less, or 300 nm or less. The decorative member may exhibit dichroism showing different colors depending on a viewing direction. The decoration member may improve visibility of the dichroism by modifying the surface shape of the pattern layer.

In one embodiment of the present specification, the inorganic material layer may impart a metallic texture and a sense of depth when viewing the decorative member. The inorganic material layer allows the image of the decorative member to be seen in various colors depending on viewing angles. This is because the wavelength of light passing through the pattern layer and reflected from the surface of the inorganic material layer changes according to the wavelength of incident light.

In one embodiment of the present specification, the inorganic material layer includes a light absorbing layer and a light reflective layer sequentially provided on the pattern layer, or includes a light reflective layer or light absorbing layer sequentially provided on the pattern layer.

In the present specification, the light absorption layer and the light reflection layer are named according to their functions. With respect to light having a specific wavelength, a layer that reflects a relatively large amount of light may be referred to as a light reflection layer, and a layer that reflects relatively little light may be referred to as a light absorption layer.

In this application, the light absorption layer and the light reflection layer are named according to their functions. With respect to light having a specific wavelength, a layer that reflects a relatively large amount of light may be referred to as a light reflection layer, and a layer that reflects relatively little light may be referred to as a light absorption layer.

Through FIG. 6, the light absorption layer and the light reflection layer will be described. In the decorative member of FIG. 6, each layer is stacked in the order of the L _i-1 layer, the L _i layer, and the L _i+1 layer based on the direction in which the light enters, and between the L _i-1 layer and the L _i layer. An interface I _i is located at , and an interface I _i+1 is located between the L _i layer and the L _i+1 layer.

When light having a specific wavelength is irradiated in a direction perpendicular to each layer so as not to cause thin film interference, the reflectance at the interface Ii can be expressed by Equation 1 below.

[Equation 1]

In Equation 1, n _i (λ) means the refractive index according to the wavelength (λ) of the i-th layer, and k _i (λ) is the extinction coefficient according to the wavelength (λ) of the i-th layer means The extinction coefficient is a scale that can define how strongly a target material absorbs light at a specific wavelength, and the definition is as described above.

When the sum of reflectances for each wavelength at the interface I i calculated at each wavelength by applying Equation 1 is R _i , _{R i is} equal to Equation 2 below.

[Equation 2]

At this time, when it is assumed that R _i of Ii among the interfaces of the laminate is the largest, the layer in contact with the interface Ii and located opposite to the interface Ii and the direction in which the light enters can be defined as the light reflection layer, and the remaining layers as the light absorption layer. For example, in the laminate shown in FIG. 6, when the sum of the reflectances for each wavelength of the interface I _i+1 is the largest, it is in contact with I _i+1 and is located opposite to the interface I _i+1 and the direction in which light enters. The layer L _i+1 may be defined as a light reflection layer, and the remaining layers L _i−1 and L _i layers may be defined as light absorption layers.

In the light absorption layer, light is absorbed in a light incident path and a reflection path, and light is reflected at the surface of the light absorption layer and the interface between the light absorption layer and the light reflection layer, respectively, so that the two reflected lights cause constructive or destructive interference. In the present specification, light reflected from the surface of the light absorption layer may be expressed as surface reflected light, and light reflected from the interface between the light absorption layer and the light reflection layer may be expressed as interface reflected light. 7 shows a schematic diagram of such an action principle. 7 shows a structure in which a substrate 101, a light reflection layer 201, and a light absorption layer 301 are sequentially stacked, and the substrate is located under the light reflection layer, but this is not essential.

Light reflected from the surface of the light absorption layer may be expressed as surface reflected light, and light reflected from the interface between the light absorption layer and the light reflection layer may be expressed as interface reflected light.

In one embodiment of the present specification, the light absorbing layer preferably has a refractive index (n) of 0 to 8 at a wavelength of 400 nm, may be 0 to 7, may be 0.01 to 3, and may be 2 to 2.5. there is. The refractive index (n) may be calculated as sin θa/sin θb (where θa is an angle of light incident on the surface of the light absorption layer and θb is an angle of refraction of light inside the light absorption layer).

In one embodiment of the present specification, the light absorption layer has an extinction coefficient (k) greater than 0 and less than or equal to 4 at a wavelength of 400 nm, preferably 0.01 to 4, 0.01 to 3.5, and 0.01 to 3. and may be 0.1 to 1. The extinction coefficient (k) is -λ / 4πI (dI / dx) (here, the unit length of the path in the light absorption layer (dx), for example, the reduction fraction dI / I of light intensity per 1 m is multiplied by λ / 4π, where λ is the wavelength of light.

In one embodiment of the present specification, the light absorption layer has an extinction coefficient (k) greater than 0 and less than or equal to 4 at a wavelength of 380 to 780 nm, preferably 0.01 to 4, may be 0.01 to 3.5, and 0.01 to 3 It may be 0.1 to 1. Since the extinction coefficient (k) is in the above range in the entire visible light wavelength region of 400 nm, preferably 380 to 780 nm, it can serve as a light absorbing layer within the visible light range.

>1 인 차이를 나타낼 수 있다. 예컨대, 유리/알루미늄/알루미늄산화물/공기층의 적층구조에, 광원으로서 D65(태양광 스펙트럼)을 조사한 경우를 시뮬레이션하였을 때, 상기 알루미늄산화물의 k값이 0일 때와 0.01일 때의 △E^*ab은 하기 표 1과 같이 얻어졌다. 이 때, 알루미늄층의 두께(h1)은 120 nm이었고, 알루미늄산화물층의 두께(h)는 하기 표 1에 기재하였다. k값은 시뮬레이션을 위하여 임의로 0과 0.01로 설정하였으며, n값은 알루미늄의 값을 이용하였다. Even if they have the same refractive index (n) value, when the extinction coefficient (k) value is 0 at 380 to 780 nm and when the extinction coefficient (k) value is 0.01

>1 can indicate a difference. For example, when simulating a case where D65 (sunlight spectrum) is irradiated as a light source to a laminated structure of glass/aluminum/aluminum oxide/air layer, ΔE ^* ab when the k value of the aluminum oxide is 0 and 0.01 was obtained as shown in Table 1 below. At this time, the thickness h1 of the aluminum layer was 120 nm, and the thickness h of the aluminum oxide layer was shown in Table 1 below. The k value was arbitrarily set to 0 and 0.01 for simulation, and the value of aluminum was used as the n value.

h [nm] k = 0 k = 0.01 ΔE*ab L* a* b* L* a* b* 40 6.63 1.75 -1.25 85.18 2.09 0.03 1.96 60 9.83 -4.02 -8.30 87.86 -4.06 -9.01 2.10 80 5.60 -1.87 -2.58 94.44 -2.05 -2.86 1.20

In one embodiment of the present specification, the light absorption layer may be a single layer or a multilayer of two or more layers. The light absorption layer may be made of a material having an extinction coefficient (k) at 380 to 780 nm, that is, a material having an extinction coefficient of greater than 0 and less than or equal to 4, preferably 0.01 to 4. For example, the light absorption layer may include one or two or more selected from the group consisting of metals, metalloids, and oxides, nitrides, oxynitrides, and carbides of metals or metalloids. The oxide, nitride, oxynitride or carbide of the metal or metalloid may be formed according to deposition conditions set by a person skilled in the art. The light absorption layer may include the same metal as the light reflection layer, a metalloid, an alloy of two or more types, or an oxynitride.

In one embodiment of the present specification, the light absorption layer is indium (In), titanium (Ti), tin (Sn), silicon (Si), germanium (Ge), aluminum (Al), copper (Cu), nickel ( Ni), vanadium (V), tungsten (W), tantalum (Ta), molybdenum (Mo), neodymium (Nb), iron (Fe), chromium (Cr), cobalt (Co), gold (Au) and silver ( one or two or more materials selected from Ag) and oxides thereof; nitrides thereof; oxynitrides thereof; It is a single layer or multi-layer containing one or two or more materials of carbon and carbon composites.

In one embodiment of the present specification, the light absorption layer includes silicon (Si) or germanium (Ge). The light absorption layer made of silicon (Si) or germanium (Ge) has a refractive index (n) of 0 to 8 at 400 nm, which may be 0 to 7, and an extinction coefficient (k) of greater than 0 and 4 or less, preferably 0.01 to 7. 4, and may be 0.01 to 3 or 0.01 to 1.

In one embodiment of the present specification, the light absorption layer may be made of a material having an extinction coefficient (k) at 400 nm, preferably 380 to 780 nm, for example, the light absorption layer / light reflection layer is CuO / Cu, CuON / Cu , CuON/Al, AlON/Al, AlN/Al/AlON/Cu, AlN/Cu, etc.

The light reflection layer is not particularly limited as long as it is a material capable of reflecting light, but the light reflectance may be determined according to the material, and color implementation is easy at, for example, 50% or more. Light reflectance can be measured using an ellipsometer.

In one embodiment of the present specification, the light reflection layer may be a metal layer, a metal oxynitride layer, or an inorganic material layer. The light reflection layer may be composed of a single layer or may be composed of two or more multi-layers.

As an example, the light reflection layer may include indium (In), titanium (Ti), tin (Sn), silicon (Si), germanium (Ge), aluminum (Al), copper (Cu), nickel (Ni), vanadium ( V), tungsten (W), tantalum (Ta), molybdenum (Mo), neodymium (Nb), iron (Fe), chromium (Cr), cobalt (Co), gold (Au) and silver (Ag) It may be a single layer or multiple layers including one or two or more materials, oxides thereof, nitrides or oxynitrides thereof, and one or two or more materials of carbon and carbon composites.

For example, the light reflection layer may include two or more alloys selected from the above materials, and oxides, nitrides, or oxynitrides thereof. For example, the light reflection layer may include two or more alloys selected from among the metals. More specifically, the light reflection layer may include molybdenum, aluminum or copper. According to another example, the light reflective layer may be manufactured using an ink containing carbon or a carbon composite, thereby realizing a high-resistance reflective layer. Carbon or carbon composites include carbon black, CNT, and the like. The ink containing the carbon or carbon composite may include the above-described material or an oxide, nitride, or oxynitride thereof, for example, indium (In), titanium (Ti), tin (Sn), silicon (Si), germanium ( Ge). Aluminum (Al), Copper (Cu), Nickel (Ni), Vanadium (V), Tungsten (W), Tantalum (Ta), Molybdenum (Mo), Neodymium (Nb), Iron (Fe), Chromium (Cr), One or two or more oxides selected from cobalt (Co), gold (Au), and silver (Ag) may be included. After printing the ink including the carbon or carbon composite, a curing process may be additionally performed.

According to one embodiment, the thickness of the light absorption layer may be 5 to 500 nm, for example, 30 to 500 nm.

In one embodiment of the present specification, the thickness of the light reflection layer may be determined according to a desired color in the final structure, for example, 1 nm or more, preferably 25 nm or more, such as 50 nm or more, preferably 70 nm or more. .

In one embodiment of the present specification, the light absorbing layer may have various shapes by adjusting deposition conditions and the like when forming the light absorbing layer. For example, during deposition, the thickness of the light absorption layer may be different for each region through an inclined deposition method or the like.

In one embodiment of the present specification, the light absorption layer includes two or more points having different thicknesses.

In one embodiment of the present specification, the light absorption layer includes two or more regions having different thicknesses.

In one embodiment of the present specification, the light absorption layer may include an inclined surface.

Examples of the structure according to the embodiment are shown in FIGS. 8 and 9 . 8 and 9 illustrate a structure in which a light reflection layer 201 and a light absorption layer 301 are stacked (description omitted). 8 and 9, the light absorption layer 301 has two or more points having different thicknesses. According to FIG. 8, the thicknesses of the light absorption layer 301 at points A and B are different. According to FIG. 9 , the thickness of the light absorption layer 301 in region C and region D is different.

In one embodiment of the present specification, the light absorbing layer includes at least one region having an inclined surface with an inclination angle of more than 0 degrees and less than or equal to 90 degrees, and the light absorbing layer has a thickness different from that of the region having any one inclined surface. It includes one or more regions having a thickness. The inclined plane may be defined as an angle formed by any one straight line included in the upper surface of the light absorbing layer and a straight line parallel to the light reflecting layer. For example, the inclination angle of the upper surface of the light absorption layer of FIG. 8 may be about 20 degrees.

Surface characteristics such as a gradient of the upper surface of the light reflection layer may be the same as those of the upper surface of the light absorption layer. For example, by using a deposition method when forming the light absorption layer, the top surface of the light absorption layer may have the same inclination as the top surface of the light reflection layer. However, the gradient of the upper surface of the light absorption layer in FIG. 8 is different from the gradient of the upper surface of the light reflection layer.

10 and 11 illustrate the structure of a decorative member having a light absorption layer having an inclined upper surface. A structure in which a substrate 101, a light reflection layer 201, and a light absorption layer 301 are stacked, and the thickness t1 of the light absorption layer 301 in region E is different from the thickness t2 in region F.

10 and 11 relate to a light absorption layer having a structure in which an inclined surface facing each other, that is, a triangular cross section is formed. As shown in FIG. 11 , in the structure of the pattern having inclined surfaces facing each other, the thickness of the light absorption layer may vary on two surfaces of the triangular structure even when deposition is performed under the same conditions. Accordingly, a light absorbing layer having two or more regions having different thicknesses can be formed in only one process. As a result, the expression color is different according to the thickness of the light absorption layer. At this time, if the thickness of the light reflection layer is greater than a certain level, the color change is not affected.

10 and 11 illustrate a structure in which the base material 101 is provided on the side of the light reflection layer 201, but is not limited to this structure, and the position of the base material 101 is disposed at a different position as described above. It could be.

In addition, in the substrate 101 of FIG. 10 , the surface in contact with the light reflection layer 201 is a flat surface, and the surface in contact with the light reflection layer 201 of the substrate 101 has a pattern having the same slope as the top surface of the light reflection layer 201 . can have This is shown in Figure 11. In this case, a difference in thickness of the light absorption layer may occur due to a difference in inclination of the pattern of the substrate. However, it is not limited thereto, and even if the substrate and the light absorbing layer are made to have different slopes by using another deposition method, the thickness of the light absorbing layer may be different on both sides of the pattern to exhibit dichroism, which will be described later.

In one embodiment of the present specification, the light absorption layer includes one or more regions in which the thickness gradually changes. 12 illustrates a structure in which the thickness of the light absorption layer 301 gradually changes.

In one embodiment of the present specification, the light absorbing layer includes one or more regions of an upper surface having an inclined surface having an inclination angle of more than 0 degrees and less than or equal to 90 degrees, and at least one of the regions having the inclined surface has a gradual thickness of the light absorbing layer. has a structure that changes to 12 illustrates the structure of the light absorption layer including a region having an inclined surface on an upper surface thereof. Regions G and H of FIG. 12 both have a structure in which the upper surface of the light absorption layer has an inclined surface and the thickness of the light absorption layer gradually changes.

In the present specification, the structure in which the thickness of the light absorbing layer is changed includes a cross section in the thickness direction of the light absorbing layer including a point where the thickness of the light absorbing layer is the smallest and a point where the thickness of the light absorbing layer is the largest, and the light absorbing layer It means that the thickness of the light absorption layer increases in the direction of the point where the thickness of the light absorption layer is the largest at the point where the thickness of is the smallest. In this case, the point where the thickness of the light absorption layer is the smallest and the point where the thickness of the light absorption layer is the largest may refer to any point on the interface between the light absorption layer and the light reflection layer.

In one embodiment of the present specification, the light absorption layer includes a first region having a first inclined surface having an inclination angle in the range of 1 degree to 90 degrees, and the upper surface has a different inclination direction from the first inclined surface, or an inclination angle may further include two or more regions having different inclined surfaces or having horizontal upper surfaces. In this case, thicknesses of the light absorption layer in the first region and the two or more regions may all be different from each other.

In one embodiment of the present specification, the pattern layer includes a convex or concave shape having an asymmetric cross section.

In one embodiment of the present specification, the pattern layer includes a convex shape having an asymmetric cross section.

In one embodiment of the present specification, the pattern layer includes a concave shape having an asymmetric cross section.

In one embodiment of the present specification, the pattern layer includes a convex shape having an asymmetric cross section and a concave shape having an asymmetric cross section.

In this specification, "cross section" means a surface when the said convex part or concave part is cut in one direction. For example, the cross-section may refer to a surface obtained by cutting the convex portion or concave portion in a direction parallel to or perpendicular to the ground when the decorative member is placed on the ground. The convex or concave surface of the pattern layer of the decorative member according to the embodiment is characterized in that at least one of cross sections in a direction perpendicular to the ground has an asymmetrical structure.

In this specification, "a cross section of an asymmetric structure" means a structure in which a figure composed of edges of a cross section does not have line symmetry or point symmetry. Axisymmetry is the property of overlapping when a figure is symmetrical about a straight line. Point symmetry means that when a figure is rotated 180 degrees around a point, it has a symmetrical property that completely overlaps the original figure. Here, the edge of the cross-section of the asymmetric structure may be a straight line, a curve, or a combination thereof.

이며, 0<△E^*ab<1의 범위 내에서는 관찰자가 색 차이를 인식할 수 없다[참고문헌: Machine Graphics and Vision 20(4): 383-411]. 따라서, 본 명세서에서는 이색성을 △E^*ab>1로 정의할 수 있다.As described above, the decorative member may express dichroism by the convex portion or the concave portion having an asymmetric cross section included in the surface of the pattern layer. Dichroism means that different colors are observed depending on the viewing angle. The expression of color can be expressed by CIE L*a*b*, and the color difference can be defined using a distance (ΔE ^* ab) in L*a*b* space. Specifically, the color difference is

, and within the range of 0<ΔE ^* ab<1, an observer cannot perceive a color difference [Reference: Machine Graphics and Vision 20(4): 383-411]. Therefore, in the present specification, dichroism can be defined as ΔE ^* ab>1.

In one embodiment of the present specification, the decorative member has dichroism of ΔE*ab>1. Specifically, the color difference ΔE * ab ^, which is a distance in the space of L*a*b* on the color coordinate CIE L*a*b*, in the entire decorative member may exceed 1.

13 and 14 each exemplarily shows a decorative member (not shown) including a pattern layer including a surface having a convex portion P1 shape.

13 exemplarily shows a decorative member including a pattern layer according to an exemplary embodiment of the present specification (substrate and protective layer not shown). The surface of the pattern layer may have a shape in which second convex portions P2 having a smaller height than the convex portions P1 are disposed between the convex portions P1. Hereinafter, the convex part named before the second convex part may be referred to as a first convex part.

In the present specification, the inclination angles a2 and a3 of the convex portion P1 may mean angles formed between the inclined surfaces S1 and S2 of the convex portion P1 and the horizontal plane of the pattern layer. Unless otherwise specified in the present specification, the first inclined surface may be defined as the left inclined surface of the convex part in the drawing, and the second inclined surface may mean the right inclined surface of the convex part.

In one embodiment of the present specification, the convex portion P1 of the pattern layer may have a polygonal cross section and a columnar shape extending in one direction. In one example, the cross section of the convex portion P1 may be triangular or may have a shape further including a small concave portion at the tip (pointed portion or vertex portion) of the triangle.

In one embodiment of the present specification, the cross section of the asymmetric structure includes a first inclined surface and a second inclined surface having different inclination angles.

In one embodiment of the present specification, an angle a1 formed between the first inclined surface S1 and the second inclined surface S2 may be within a range of 80 degrees to 100 degrees. Specifically, the angle a1 may be 80 degrees or more, 83 degrees or more, 86 degrees or more, or 89 degrees or more, and may be 100 degrees or less, 97 degrees or less, 94 degrees or less, or 91 degrees or less. The angle may mean an angle of a vertex formed of the first inclined surface and the second inclined surface. When the first inclined surface and the second inclined surface do not form a vertex, it may mean an angle of a vertex in a state in which the first inclined surface and the second inclined surface are virtually extended to form a vertex.

In one embodiment of the present specification, the difference between the inclination angle a2 of the first inclined surface and the inclined angle a3 of the second inclined surface of the convex portion P1 may be within a range of 30 degrees to 70 degrees. The difference between the angle of inclination (a2) of the first inclined surface and the angle of inclination (a3) of the second inclined surface may be, for example, 30 degrees or more, 35 degrees or more, 40 degrees or more, or 45 degrees or more, 70 degrees or less, 65 degrees or less. , 60 degrees or less or 55 degrees or less. When the difference between the inclination angles of the first inclined surface and the second inclined surface is within the above range, it may be advantageous in terms of implementing color expression according to the direction. That is, dichroism may appear larger.

In one embodiment of the present specification, the height H1 of the convex portion P1 may be 5 μm to 30 μm. When the height of the convex portion is within the above range, it may be advantageous in terms of production process. In this specification, the height of the convex part may mean the shortest distance between the highest and lowest part of the convex part with respect to the horizontal plane of the pattern layer. In the description regarding the height of the convex portion, the same numerical range may be applied to the depth of the concave portion described above.

In one embodiment of the present specification, the width W1 of the convex portion P1 may be 10 μm to 90 μm. When the width of the convex portion is within the above range, it may be advantageous in terms of process in processing and forming the pattern. The width W1 of the convex portion P1 may be, for example, 10 μm or more, 15 μm or more, 20 μm or more, or 25 μm or more, and 90 μm or less, 80 μm or less, 70 μm or less, 60 μm or less, or 50 μm or less. It may be ㎛ or less, 40 ㎛ or less, or 35 ㎛ or less. The description regarding this width can be applied not only to the convex portion, but also to the aforementioned concave portion.

In one embodiment of the present specification, the interval between the convex portions P1 may be 0 μm to 20 μm. In the present specification, the distance between convex parts may mean the shortest distance between two adjacent convex parts, where one convex part ends and the other convex part starts. If the distance between the convex portions is appropriately maintained, a phenomenon in which the reflective area appears dark due to shading when the decorative member should exhibit a relatively bright color when viewed from an inclined surface having a greater inclination angle of the convex portion can be improved. As will be described later, a second convex portion having a smaller height than the convex portion may exist between the convex portions. The description regarding this spacing can be applied not only to the convex portion but also to the aforementioned concave portion.

In one embodiment of the present specification, the height H2 of the second convex portion P2 may have a range of 1/5 to 1/4 of the height H1 of the first convex portion P1. . For example, the difference (H1-H2) between the heights of the first convex portion and the second convex portion may be 10 μm to 30 μm. A width W2 of the second convex portion may be 1 μm to 10 μm. The width W2 of the second convex portion may be specifically 1 μm or more, 2 μm or more, 3 μm or more, 4 μm or more, or 4.5 μm or more, 10 μm or less, 9 μm or less, 8 μm or less, 7 μm or less, It may be 6 μm or less or 5.5 μm or less.

In one embodiment of the present specification, the second convex portion may have two inclined surfaces S3 and S4 having different inclination angles. An angle a4 formed by the two sloped surfaces of the second convex portion may range from 20 degrees to 100 degrees. The angle a4 may be 20 degrees or more, 30 degrees or more, 40 degrees or more, 50 degrees or more, 60 degrees or more, 70 degrees or more, 80 degrees or more, or 85 degrees or more, and may be 100 degrees or less or 95 degrees or less. there is. A difference (a6-a5) between inclination angles of both inclined surfaces of the second convex portion may be 0 degrees to 60 degrees. The difference in inclination angle (a6-a5) may be 0 degrees or more, 10 degrees or more, 20 degrees or more, 30 degrees or more, 40 degrees or more, or 45 degrees or more, or 60 degrees or less, or 55 degrees or less. When the size of the second convex portion is within the above range, it may be advantageous in that bright colors can be formed by increasing the inflow of light on the side having a large slope angle.

14 illustrates a decorative member including a pattern layer according to an exemplary embodiment of the present specification (not shown). The surface of the pattern layer may have a shape further including a concave portion P3 having a smaller height than the convex portion at the tip (pointed portion) of the convex portion P1. Such a decoration member may exhibit an effect in which the color of an image is subtly changed according to a viewing angle.

In one embodiment of the present specification, the height H3 of the concave portion P3 may be 3 μm to 15 μm. The height H3 of the concave portion P3 may be specifically 3 μm or more, 15 μm or less, 10 μm or less, or 5 μm or less. The concave portion may have two inclined surfaces S5 and S6 having different inclination angles. An angle a7 formed by the two inclined surfaces of the concave portion may range from 20 degrees to 100 degrees. The angle a7 may be 20 degrees or more, 30 degrees or more, 40 degrees or more, 50 degrees or more, 60 degrees or more, 70 degrees or more, 80 degrees or more, or 85 degrees or more, and may be 100 degrees or less or 95 degrees or less. there is. A difference (a9-a8) between inclination angles of both inclined surfaces of the concave portion may be 0 degrees to 60 degrees. The difference between the inclination angles (a9-a8) may be 0 degrees or more, 10 degrees or more, 20 degrees or more, 30 degrees or more, 40 degrees or more, or 45 degrees or more, and may be 60 degrees or less or 55 degrees or less. When the size of the concave portion is within the above range, it may be advantageous in that color can be added to the mirror surface.

In one embodiment of the present specification, the pattern layer may include a shape of a convex portion or a concave portion, and each shape may be arranged in a reversed structure.

15 illustratively illustrates a decorative member including a pattern layer according to an exemplary embodiment of the present specification. As shown in (a) of FIG. 15 , the surface of the pattern layer may have a shape in which a plurality of convex portions are arranged in a 180 degree reversed structure. Specifically, the surface of the pattern layer may include a first region C1 in which the inclination angle of the second inclined surface is greater than that of the first inclined surface, and a second region C2 in which the inclination angle of the second inclined surface is greater than that of the first inclined surface. . In one example, the convex part included in the first area may be referred to as a first convex part P1, and the convex part included in the second area may be referred to as a fourth convex part P4. The height, width, angle of inclination of the first convex part P1 and the fourth convex part P4, and the angle formed by the first and second inclined surfaces may be equally applied to the contents described in the item of the convex part P1. there is. As shown in (b) of FIG. 15, one of the first area and the second area may correspond to an image or logo, and the other area may correspond to a background portion. Such a decorative member may exhibit an effect in which the color of an image or logo subtly changes depending on a viewing angle. In addition, a decorative effect in which the color of the image or logo part and the background part are changed depending on the direction in which they are viewed may be displayed.

In one embodiment of the present specification, each of the first region and the second region may include a plurality of convex portions. The width of the first area and the second area and the number of convex portions may be appropriately adjusted in consideration of the size of a target image or logo.

In one embodiment of the present specification, the pattern layer includes a convex shape, and a cross section of the convex shape includes a first inclined edge and a second inclined edge, and the first inclined edge and the second inclined edge have The shapes are the same as or different from each other, and each is a straight shape or a curved shape.

16 illustratively illustrates a decorative member including a pattern layer according to an exemplary embodiment of the present specification. The cross section of the pattern layer has a shape of a convex portion, and the cross section of the shape of the convex portion includes a first area D1 including the first inclined edge and a second area D2 including the second inclined edge. The first inclined edge and the second inclined edge have a straight line shape. An angle c3 formed by the first inclined edge and the second inclined edge may be 75 degrees to 105 degrees or 80 degrees to 100 degrees. An angle c1 formed between the first inclined edge and the ground is different from an angle c2 formed between the second inclined edge and the ground. For example, the combination of c1 and c2 may be 20 degrees/80 degrees, 10 degrees/70 degrees, or 30 degrees/70 degrees. The angle may mean an angle of a vertex formed of the first inclined side and the second inclined side. When the first inclined edge and the second inclined edge do not form a vertex, it may mean an angle of a vertex in a state in which the first inclined edge and the second inclined edge are virtually extended to form a vertex.

17 illustratively illustrates a decorative member including a pattern layer according to an exemplary embodiment of the present specification. The cross section of the pattern layer has a shape of a convex portion, and the cross section of the shape of the convex portion includes a first area E1 including the first inclined edge and a second area E2 including the second inclined edge. At least one of the first inclined edge and the second inclined edge may have a curved shape. For example, both the first inclined edge and the second inclined edge may have a curved shape, the first inclined edge may have a straight line shape, and the second inclined edge may have a curved shape. When the first inclined edge has a straight line shape and the second inclined edge has a curved shape, the angle c1 may be greater than the angle c2. 17 illustrates that the first inclined edge has a straight line shape and the second inclined edge has a curved shape. The angle formed by the curved slope with the ground can be calculated from the angle formed by the straight line and the ground when an arbitrary straight line is drawn from the point where the slope and the ground meet to the point where the first and second slopes meet. . The curvature of the curved second inclined side may be different depending on the height of the pattern layer, and the curved line may have a radius of curvature. The radius of curvature may be 10 times or less than the width (E1+E2) of the shape of the convex portion. Fig. 17 (a) shows that the radius of curvature of the curve is twice the width of the convex shape, and Fig. 17 (b) shows that the radius of curvature of the curve is one time the width of the convex shape. A ratio of the curved portion E2 to the width E1+E2 of the convex portion may be 90% or less. 17 (a) and (b) show that the ratio of the curved portion E2 to the width (E1+E2) of the convex portion is 60%.

In one embodiment of the present specification, the cross section of the shape of the convex portion may be a triangular or quadrangular polygonal shape.

18 illustratively shows a decorative member including a pattern layer according to an exemplary embodiment of the present specification. A cross section of the pattern layer may have a shape of a convex portion, and a cross section of the shape of the convex portion may have a rectangular shape. The quadrangular shape may be a general quadrangular shape, and is not particularly limited as long as the inclination angles of the respective inclined sides are different from each other. The quadrangular shape may be a shape remaining by partially cutting a triangle. For example, it may be a trapezoid in which one pair of opposite sides are parallel, or a quadrilateral in which no pair of opposite sides are parallel. The cross section of the convex portion includes a first area F1 including a first inclined edge, a second area F2 including a second inclined edge, and a third area F3 including a third inclined edge. . The third inclined edge may or may not be parallel to the ground. For example, when the rectangular shape is a trapezoid, the third inclined side is parallel to the ground. Any one or more of the first to third inclined edges may have a curved shape, and the curved shape is as described above. The total length of F1+F2+F3 may be defined as the width of the convex pattern, and the width is as described above.

In one embodiment of the present specification, the pattern layer may include two or more convex portion shapes, and may further include flat portions in some or all of the convex portion shapes.

19 illustratively illustrates a decorative member including a pattern layer according to an exemplary embodiment of the present specification. A flat portion may be included between each convex portion of the pattern layer. The flat portion means a region in which no convex portion exists. Except for the fact that the pattern layer further includes a flat portion, descriptions of the remaining components (D1, D2, c1, c2, c3, the first inclined edge and the second inclined edge) are the same as described above. Meanwhile, the total length of D1 + D2 + G1 is defined as the pitch of the pattern, which is different from the width of the pattern described above.

20 illustratively illustrates a pattern layer of a decorative member and a manufacturing method thereof according to an exemplary embodiment of the present specification. The cross section of the pattern layer may have a shape of a convex part, and the cross section of the shape of the convex part may have a shape in which a specific area of the ABO1 triangular shape is removed. A method of determining the specific area to be removed is as follows. The contents of the inclination angles c1 and c2 are the same as those described above.

1) Set an arbitrary point P1 on the AO1 line segment that divides the AO1 line segment at the L1:L2 ratio.

2) Set an arbitrary point P2 on the BO1 line segment that divides the BO1 line segment in the m1:m2 ratio.

3) Set an arbitrary point O2 on the AB line segment that divides the AB line segment at the ratio of n1:n2.

4) Set an arbitrary point P3 on the O1O2 line segment that divides the O2O1 line segment at the o1:o2 ratio.

In this case, the ratios of L1:L2, m1:m2, n1:n2, and o1:o2 may be the same as or different from each other, and each independently may be 1:1000 to 1000:1.

5) Remove the area formed by the P1O1P2P3 polygon.

6) The shape of the ABP2P3P1 polygon is taken as the cross section of the convex portion.

The pattern layer may be transformed into various shapes by adjusting ratios of L1:L2, m1:m2, n1:n2, and o1:o2. For example, when the L1 and m1 increase, the height of the pattern may increase, and when the o1 increases, the height of the concave portion formed on the convex portion may decrease, and by adjusting the ratio of n1, the height of the concave portion formed on the convex portion The location of the lowest point of the concave portion can be adjusted close to either side of the slope of the convex portion.

FIG. 21 illustratively illustrates a pattern layer manufactured by the method of manufacturing a pattern layer of a decorative member according to FIG. 20 . When the L1:L2, m1:m2, and o1:o2 ratios are all the same, the shape of the cross section may be trapezoidal. The heights of the trapezoid (ha, hb) can be varied by adjusting the ratio of L1:L2. For example, FIG. 21(a) shows a pattern layer manufactured when the ratio of L1:L2 is 1:1, and FIG. 21(b) shows a pattern layer manufactured when the ratio of L1:L2 is 2:1.

In one embodiment of the present specification, the surface of the convex or concave shape includes two or more convex or concave shapes. In this way, dichroism can be further increased by having two or more convex or concave surfaces. In this case, the two or more convex or concave shapes may be the same shape repeated, but different shapes may be included.

In one embodiment of the present specification, the convex or concave shape having the cross section of the asymmetric structure includes two or more sides of at least one cross section having different inclination angles, different degrees of curvature, or different side shapes. For example, when two sides of the sides constituting at least one cross section have different inclination angles, different degrees of curvature, or different shapes, the convex portion or concave portion has an asymmetrical structure.

In this specification, unless otherwise stated, "side" may be a straight line, but is not limited thereto, and may be all or part of a curved line. For example, the side may include a part of an arc of a circle or an ellipse, a wavy structure, or a zigzag structure.

In this specification, when the variation includes a part of an arc of a circle or ellipse, the circle or ellipse may have a radius of curvature. The radius of curvature may be defined as the radius of an arc when an extremely short section of a curve is converted into an arc.

In this specification, unless otherwise specified, “inclined side” means a side whose angle with respect to the ground is greater than 0 degrees and less than 90 degrees when the decorative member is placed on the ground. At this time, when the side is a straight line, an angle formed between the straight line and the ground may be measured. If the side includes a curve, when the decorative member is placed on the ground, the angle formed by the straight line connecting the point closest to the ground among the sides and the farthest point from the ground among the sides with the shortest distance is measured can

In the present specification, unless otherwise specified, the inclination angle is an angle formed between a surface or a side constituting the pattern layer and the ground when the decorative member is placed on the ground, and is greater than 0 degrees and less than 90 degrees. Alternatively, a line segment (a'-b') generated when the point (a') where the surface or side constituting the pattern layer is in contact with the ground and the point (b') where the surface or side constituting the pattern layer is farthest from the ground are connected to each other. ) and the angle formed by the ground.

In this specification, unless otherwise specified, the degree of tortuosity means the degree of change in the slope of the tangent line at successive points on a side or plane. The greater the change in the slope of the tangent at successive points on the side or plane, the greater the degree of curvature.

In one embodiment of the present specification, the convex or concave shape of the surface of the pattern layer is a cone-shaped convex portion protruding outside the surface of the pattern layer or a cone depressed inside the surface of the pattern layer. It may be a concave portion in the form of a cone.

In one embodiment of the present specification, the cone shape includes a cone, an elliptical cone, or a polygonal pyramid. Here, the shape of the bottom surface of the polygonal pyramid includes a triangle, a square, and a star shape with 5 or more protruding points. According to one example, when the decorative member is placed on the ground, when the surface of the pattern layer has a cone-shaped convex shape, at least one of vertical cross sections of the convex shape with respect to the ground may have a triangular shape. . According to another example, when the decorative member is placed on the ground, when the surface of the pattern layer has a cone-shaped concave shape, at least one of vertical cross sections of the concave shape with respect to the ground has an inverted triangle shape can be

In one embodiment of the present specification, the cone-shaped convex portion or cone-shaped concave portion may have at least one cross section of an asymmetrical structure. For example, when the cone-shaped convex or concave portion is observed from the surface side of the convex or concave portion, dichroism occurs when two or less identical shapes exist when rotated 360 degrees based on the vertex of the cone. It is advantageous when expressed. 22 shows the convex shape of the convex part observed from the surface side of the convex part shape. it is foreshadowed

When the decorative member is placed on the ground, the cone shape of the symmetrical structure has a cross section in a direction horizontal to the ground (hereinafter referred to as a horizontal cross section) is a circle or a regular polygon with each side having the same length, and the vertex of the cone is on the ground It is a structure that exists on a line perpendicular to the cross section of the center of gravity of the horizontal cross section for the cross section. However, in a cone shape having an asymmetric cross section, when observed from the surface side of the convex or concave shape of the cone, the position of the cone's vertex is on the vertical line of the point, not the center of gravity of the horizontal cross section of the cone. or a structure in which the horizontal cross section of the cone is an asymmetrical polygon or ellipse. When the horizontal cross section of the cone is an asymmetrical polygon, at least one of the sides or angles of the polygon may be designed differently from the rest.

For example, as shown in FIG. 23 , the position of the vertex of the cone may be changed. Specifically, as shown in the first figure of FIG. 23, when observing from the surface side of the convex shape of the cone, the vertex of the cone is designed to be located on the vertical line of the center of gravity (01) of the horizontal cross section with respect to the ground of the cone, When rotating 360 degrees based on the vertex of the cone, 4 identical structures can be obtained (4 fold symmetry). However, the symmetrical structure is broken by designing the vertex of the cone at a position (02) rather than at the center of gravity (01) of the horizontal section with respect to the ground. The length of one side of the horizontal cross section to the ground is x, the travel distance of the vertex of the cone is a and b, and the height of the cone shape, which is the length of a line vertically connected from the vertex of the cone (01 or 02) to the horizontal cross section to the ground, is If h, the angle formed by the horizontal cross section and the side surface of the cone is θn, cosine values can be obtained for plane 1, plane 2, plane 3, and plane 4 in FIG. 23 as follows.

At this time, since θ1 and θ2 are the same, there is no dichroism. However, since θ3 and θ4 are different, and │θ3 - θ4│ means the color difference (ΔE*ab) between the two colors, dichroism can be exhibited. Here, │θ3 - θ4│ > 0. In this way, by using the angle formed by the horizontal cross section and the side surface of the cone, it is possible to quantitatively indicate how much the symmetry structure is broken, that is, the degree of asymmetry, and the numerical value representing the degree of such asymmetry is dichroic color difference and proportional

24 shows a surface having a shape of a convex part having a linear peak, a) illustrates a pattern having convex parts that do not exhibit dichroism, and b) illustrates a pattern having convex parts that exhibit dichroism. it is foreshadowed The cross section X-X' of FIG. 24 a) is an isosceles triangle or an equilateral triangle, and the cross section Y-Y' of FIG. 24 b) is a triangle with side lengths different from each other.

In one embodiment of the present specification, the pattern layer has a surface having a linear convex shape at its highest point or a linear concave shape at its lowest point. The line shape may be a straight line shape, a curved shape, including both curves and straight lines, or may be a zigzag shape. This is shown in Figures 25 to 28. When the surface of the convex part with the highest point in the form of a line or the concave part with the lowest point in the form of a line is observed from the surface side of the convex part or concave part, the center of gravity of the horizontal section of the convex part or concave part with respect to the ground As a criterion, when there is only one identical shape when rotated 360 degrees, it is advantageous to express dichroism.

In one embodiment of the present specification, the pattern layer has a convex or concave surface of a structure in which a cone-shaped tip is cut. 28 shows a photograph in which an inverted trapezoidal concave portion having an asymmetric cross-section perpendicular to the ground is realized when the decorative member is placed on the ground. Such an asymmetrical cross section may have a trapezoidal or inverted trapezoidal shape. Even in this case, dichroism can be expressed by the cross section of the asymmetric structure.

In addition to the structure exemplified above, various convex or concave surfaces as shown in FIG. 29 may be implemented.

In this specification, unless otherwise stated, "surface" may be a flat surface, but is not limited thereto, and may be all or part of a curved surface. For example, the shape of the cross section in a direction perpendicular to the plane may include a structure such as a part of a circle or an ellipse arc, a wavy structure, and a zigzag structure.

In this specification, unless otherwise specified, "inclined surface" means a surface whose angle with respect to the ground is greater than 0 degrees and less than 90 degrees when the decorative member is placed on the ground. At this time, when the plane is a plane, the angle formed by the plane and the ground may be measured. If the surface includes a curved surface, when the decorative member is placed on the ground, the angle formed by the straight line connecting the closest point to the ground among the surfaces and the farthest point from the ground among the surfaces with the shortest distance is measured can

In one embodiment of the present specification, the pattern layer includes a pattern of a symmetrical structure. A symmetrical structure includes a prism structure, a lenticular lens structure, and the like.

In one embodiment of the present specification, the pattern layer has a flat portion on a surface opposite to the surface on which the convex portion or the concave portion is formed, and the flat portion may be formed on a substrate. A plastic substrate may be used as the substrate. As a plastic substrate, TAC (triacetyl cellulose); COP (cyclo olefin copolymer), such as a norbornene derivative; PMMA (poly(methyl methacrylate); PC (polycarbonate); PE (polyethylene); PP (polypropylene); PVA (polyvinyl alcohol); DAC (diacetyl cellulose); Pac (polyacrylate); PES (poly ether sulfone); PEEK (polyetheretherketon ); PPS (polyphenylsulfone), PEI (polyetherimide); PEN (polyethylenemaphthatlate); PET (polyethyleneterephtalate); PI (polyimide); PSF (polysulfone); PAR (polyarylate) or amorphous fluororesin, etc. may be used, but are not limited thereto. no.

In one embodiment of the present specification, the pattern layer may include a thermosetting resin or an ultraviolet curable resin. As the curable resin, a photo-curable resin or a thermo-curable resin may be used. An ultraviolet curable resin may be used as the photocurable resin. Examples of the thermosetting resin include, but are not limited to, silicone resins, silicon resins, fran resins, polyurethane resins, epoxy resins, amino resins, phenol resins, urea resins, polyester resins, or melamine resins. . UV curable resins are typically acrylic polymers such as polyester acrylate polymers, polystyrene acrylate polymers, epoxy acrylate polymers, polyurethane acrylate polymers or polybutadiene acrylate polymers, silicone acrylate polymers or alkyl acrylates. Polymers and the like can be used, but are not limited thereto.

In one embodiment of the present specification, a color dye may be further included in or on at least one surface of the pattern layer. Including the colored dye on at least one surface of the pattern layer may mean, for example, a case in which the colored dye is included in the above-described base layer provided on the flat portion side of the pattern layer.

In one embodiment of the present specification, the colored dyes include anthraquinone-based dyes, phthalocyanine-based dyes, thioindigo-based dyes, perinone-based dyes, isoxindigo )-based dyes, methane-based dyes, monoazo-based dyes, and 1:2 metal complex-based dyes may be used.

In one embodiment of the present specification, when the pattern layer includes a colored dye therein, it may be applied by adding a dye to the curable resin. When a colored dye is further included under the pattern layer, a layer containing the dye may be coated on top or bottom of the base layer.

In one embodiment of the present specification, the content of the colored dye may be, for example, 0 to 50 wt%. The content of the colored dye may determine transmittance and haze range of the pattern layer or decorative member, transmittance may be, for example, 20% to 90%, and haze may be, for example, 1% to 40%.

A decoration member according to another exemplary embodiment of the present application may include between the pattern layer and the inorganic material layer; an opposite surface of the surface of the pattern layer facing the inorganic material layer; Alternatively, a color film provided on a surface opposite to the surface of the inorganic material layer facing the pattern layer may be further included.

According to another exemplary embodiment of the present application, the inorganic material layer includes a light absorption layer and a light reflection layer, and between the pattern layer and the inorganic material layer; between the light absorption layer and the light reflection layer; an opposite surface of the surface of the pattern layer facing the inorganic material layer; A color film provided on a surface opposite to the surface of the inorganic material layer facing the pattern layer may be further included.

Compared to the case where the color film is not provided, the color difference △, which is the distance in the space of L*a*b* on the color coordinate CIE L*a*b* of the color expression layer, when the color film is present. It is not particularly limited as long as E ^* ab exceeds 1.

이며, 0<△E^*ab<1의 범위 내에서는 관찰자가 색 차이를 인지할 수 없다[참고문헌: Machine Graphics and Vision 20(4):383-411]. 따라서, 본 명세서에서는 칼라필름의 추가에 따른 색차를 △E^*ab>1로 정의할 수 있다. The expression of color can be expressed by CIE L*a*b*, and the color difference can be defined using a distance (ΔE ^* ab) in L*a*b* space. Specifically,

, and within the range of 0<ΔE ^* ab<1, an observer cannot perceive a color difference [Reference: Machine Graphics and Vision 20(4):383-411]. Therefore, in the present specification, the color difference according to the addition of the color film can be defined as ΔE ^* ab>1.

By additionally providing such a color film, even when the material and thickness of the inorganic layer such as the light reflection layer and the light absorption layer are determined, the range of colors that can be implemented can be further greatly increased. The range of color change according to the addition of the color film can be defined as the color difference (ΔE ^* ab), which is the difference between L*a*b* before and after the application of the color film.

30 illustrates the arrangement position of the color film. (However, the convex or concave shape on the surface of the pattern layer 101, the protective layer and the substrate are not shown)

In (a) of FIG. 30, the color film 401 is provided on the opposite side of the light reflective layer 201 of the light absorption layer 301, and in (b) of FIG. 30, the color film 401 is provided on the light absorption layer 301 ) and the structure provided between the light reflection layer 201, in (c) of FIG. 21, the structure provided with the color film 401 between the light reflection layer 201 and the pattern layer 101, in (d) of FIG. It shows a structure in which the color film 401 is provided on the opposite surface of the pattern layer 101 to the light reflection layer 201 side. In (e) of FIG. 30 , the color films 401a, 401b, 401c, and 401d are disposed on the opposite side of the light absorption layer 301 to the light reflection layer 201, between the light absorption layer 301 and the light reflection layer 201, and It illustrates the structure provided between the reflective layer 201 and the pattern layer 101 and on the opposite surface of the pattern layer 101 to the light reflection layer 201 side, but is not limited thereto, and the color films 401a, 401b, One to three of 401c and 401d) may be omitted.

According to another embodiment of the present specification, the arrangement position of the color film in the structure in which the light reflection layer 301 and the light absorption layer 201 are sequentially provided on the pattern layer 101 is illustrated in FIG. 31 (pattern layer (101) on the surface of the convex or concave shape omitted).

In (a) of FIG. 31, the color film 401 is provided on the opposite side of the light absorption layer 301 of the pattern layer 101. In (b) of FIG. 31, the color film 401 is provided on the pattern layer 101. ) and the structure provided between the light absorption layer 301, in FIG. 31 (c), the structure in which the color film 401 is provided between the light absorption layer 301 and the light reflection layer 201, in FIG. 31 (d) It shows a structure in which the color film 401 is provided on the opposite side of the light reflection layer 201 to the light absorption layer 301 side. In (e) of FIG. 31, the color films 401a, 401b, 401c, and 401d are disposed on the opposite surface of the pattern layer 101 to the light absorption layer 301, between the pattern layer 101 and the light absorption layer 301, A structure provided between the light absorption layer 301 and the light reflection layer 201 and on the opposite side of the light absorption layer 301 side of the light reflection layer 201 is exemplified, but is not limited thereto, and the color films 401a and 401b , 401c, 401d) may be omitted.

30 (b) and 31 (c), when the visible light transmittance of the color film is greater than 0%, the light reflection layer can reflect incident light passing through the color film. Color implementation is possible.

In the structures shown in FIGS. 30 (c), 30 (d), and 31 (d), the light of the color expressed from the color film of the light reflection layer 201 can recognize the color difference change according to the addition of the color film. It is preferable that the transmittance is 1% or more, preferably 3% or more, and more preferably 5% or more. This is because the light transmitted in such a visible light transmittance range can be mixed with the color of the color film.

The color film may be provided in a state in which one sheet or two or more sheets of the same type or different types are stacked.

The color film can be used that can express a desired color in combination with the color expressed from the above-described laminated structure of the light reflection layer and the light absorption layer. For example, a color film showing color by dispersing one or more of pigments and dyes in a matrix resin may be used. The color film as described above may be formed by directly coating a composition for forming a color film on a position where a color film may be provided, or by coating a composition for forming a color film on a separate substrate, or through known molding such as casting or extrusion. After manufacturing the color film using the method, a method of arranging or attaching the color film to a position where the color film can be provided may be used. As the coating method, wet coating or dry coating may be used.

When the color film is disposed closer to the viewing position of the decorative member than the light reflection layer or the light absorption layer, for example, FIG. 30 (a), (b), FIG. 31 (a), (b), (c) ), the color film has a light transmittance of 1% or more, preferably 3% or more, more preferably 5% or more. desirable. Accordingly, a desired color can be achieved by combining the color expressed from the color film and the color expressed from the light reflection layer, the light absorbing layer, or a laminated structure thereof.

The thickness of the color film is not particularly limited, and a person skilled in the art can select and set the thickness as long as it can exhibit a desired color. For example, the color film may have a thickness of 500 nm to 1 mm.

Exemplary decorative members and methods for manufacturing decorative members can be applied to known objects requiring application of decorative members. For example, it can be applied without limitation to portable electronic devices, electronic products, cosmetic containers, furniture, and building materials.

A method of applying the decorative member to portable electronic devices, electronic products, cosmetic containers, furniture, building materials, etc. is not particularly limited, and a known method known in the art as a method of applying a decorative film may be applied. The decorative member may further include an adhesive layer as needed. In another example, the decorative member may be directly applied to a portable electronic device or electronic product by coating. In this case, a separate adhesive layer for attaching the decorative member to the portable electronic device or electronic product may not be required. In another example, the decorative member may be attached to a portable electronic device or electronic product via an adhesive layer. The adhesive layer may use an optically clear adhesive tape (OCA tape) or an adhesive resin. As the OCA tape or adhesive resin, an OCA tape or adhesive resin known in the art may be used without limitation. If necessary, a release liner for protecting the adhesive layer may be additionally provided.

In one embodiment of the present specification, the substrate may include a plastic injection molding product for a cosmetic container or a glass substrate.

In one embodiment of the present specification, the plastic injection molding is polypropylene (PP), polystyrene (PS), polyvinyl acetate (PVAc), polyacrylate, polyethylene terephthalate (PET), polyvinyl chloride (PVC) ), polymethyl methacrylate (PMMA), ethylene-vinyl acetate copolymer (EVA), polycarbonate (PC), polyamide, and styrene-acrylonitrile copolymer (Styrene-Acrylonitrile copolymer). It may contain.

Although the present application is specifically described through the following examples, the scope of the present specification is not limited by the following examples.

Example 1

1) Preparation of roll stamp

A roll stamp was prepared by a hard molding method in which the roll main surface of a roll stamp (3600 manufactured by JPE) having a processing width of 1150 mm was directly processed using a bite.

2) Formation of pattern layer

An ultraviolet curable resin composition was applied and pressed between the outer peripheral surface of the roll stamp and one surface of the substrate using a gap roll. Thereafter, using a Fusion company's electrodeless lamp (D-bulb type), ultraviolet rays were irradiated on the surface coated with the resin composition of the above substrate at an intensity of 560 mJ/cm ² at a feed rate of 5 mpm to perform primary curing, and At a feed rate of , the other side of the surface coated with the resin composition of the above substrate was irradiated with ultraviolet rays to secondarily cure the UV-curable resin composition to form a prism-shaped pattern layer having an inclination angle of 20 degrees/70 degrees between both inclined surfaces.

3) Formation of inorganic material layer

An AlON light absorbing layer was formed on the pattern layer using a reactive sputtering method.

4) Formation of protective layer

Thereafter, screen printing and drying of light shielding ink (GF16047 black ink, manufactured by HS Chemical Co.) on the light reflection layer was repeated 4 times to form a protective layer. At this time, drying conditions in each step were performed at an ambient temperature of 50 ° C. for 30 minutes. In addition, the number of carpenters at the time of one application was 400, and the number of carpenters at the time of two to four times of application was 350. DM waterproof ink was applied on the light reflection layer to form a protective layer (waterproof layer) to prepare a final decorative member.

Steps 1) to 4) were performed in a roll-to-roll method, and the conveying speed at this time was an average of 5 mpm.

Example 2

A decorative member was manufactured in the same manner as in Example 1 except that a roll stamp was prepared by a soft molding method in which a roll stamp was prepared by winding a transfer pattern on the main surface of a roll stamp (3600 manufactured by JPE) with a processing width of 1150 mm. .

Claims (12)

Preparing the substrate;
Forming a pattern layer on one surface of the substrate;
forming an inorganic material layer on the pattern layer; and
Forming a protective layer on the inorganic material layer,
The forming of the pattern layer, the forming of the inorganic layer, and the forming of the protective layer are performed in a roll-to-roll process,
Forming the pattern layer may include preparing a cylindrical roll stamp having a mold having a pattern formed on an outer circumferential surface thereof; applying and compressing a curable resin composition between the substrate and the cylindrical roll stamp; And curing the curable resin composition,
The curable resin composition is an ultraviolet curable resin composition, and the curing of the composition further includes irradiating the ultraviolet curable resin composition with ultraviolet rays, and irradiating the ultraviolet rays with a concentration of 500 mJ/cm ² to 1,000 mJ/cm ² is irradiated with an ultraviolet intensity of
The roll-to-roll process is a method of manufacturing a decorative member that is carried out at a feed rate of 4 mpm to 9 mpm. delete delete delete The method of manufacturing a decorative member according to claim 1, wherein the irradiating of the ultraviolet rays irradiates the surface of the substrate to which the curable resin composition is applied or the surface opposite to the surface of the substrate to which the curable resin composition is applied. . The method of manufacturing a decorative member according to claim 1, wherein the curing of the curable resin composition is performed in a state in which the substrate is wound at 1/10 or more of the total area of the outer circumferential surface of the cylindrical roll stamp. The method of claim 1 , wherein the forming of the inorganic material layer is performed by deposition. The method of claim 1, wherein the forming of the inorganic material layer is performed by an evaporation method or a sputtering method. The method of claim 1, wherein the forming of the protective layer is performed by a deposition or screen printing process. delete The method of manufacturing a decorative member according to claim 1, comprising the step of punching the decorative member into two or more regions. The method of claim 1 , further comprising forming a color film layer on one surface or the other surface of the substrate before forming the pattern layer on one surface of the substrate.

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