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WO2019004725A1 - Élément décoratif et procédé de fabrication associé - Google Patents

Élément décoratif et procédé de fabrication associé Download PDF

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Publication number
WO2019004725A1
WO2019004725A1 PCT/KR2018/007284 KR2018007284W WO2019004725A1 WO 2019004725 A1 WO2019004725 A1 WO 2019004725A1 KR 2018007284 W KR2018007284 W KR 2018007284W WO 2019004725 A1 WO2019004725 A1 WO 2019004725A1
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WO
WIPO (PCT)
Prior art keywords
light
absorbing layer
light absorbing
layer
decorative member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2018/007284
Other languages
English (en)
Korean (ko)
Inventor
손정우
장성호
김용찬
송진숙
조필성
김기환
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Chem Ltd
Original Assignee
LG Chem Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020170136828A external-priority patent/KR101925467B1/ko
Application filed by LG Chem Ltd filed Critical LG Chem Ltd
Priority to CN201880038224.8A priority Critical patent/CN110770015B/zh
Priority to JP2019564169A priority patent/JP7014359B2/ja
Priority to EP18824465.1A priority patent/EP3647049B1/fr
Priority to US16/616,861 priority patent/US11559966B2/en
Publication of WO2019004725A1 publication Critical patent/WO2019004725A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/263—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer having non-uniform thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/416—Reflective
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2451/00—Decorative or ornamental articles

Definitions

  • the present invention relates to a decorative member and a manufacturing method thereof. Specifically, the present invention relates to a decorative member suitable for use in a mobile device or an electronic product, and a manufacturing method thereof.
  • Mobile phones, various mobile devices, and home appliances have a major role in designing products, such as color, shape, pattern, etc., of products other than the functions of products, to give value to customers. Depending on the design, the preference and price of the product are also influenced.
  • the conventional deco film color development was attempted through printing, deposition, and the like. If different colors are expressed on a single plane, they must be printed more than twice, and it is difficult to implement them when various colors are to be applied to a three-dimensional pattern.
  • the conventional deco film has a fixed color depending on viewing angles, and even if there is a slight change, it is limited to the degree of color difference.
  • One embodiment of the present application provides a decorative member comprising a light reflecting layer and a light absorbing layer provided on the light reflecting layer and containing Si.
  • the light reflection layer is formed on a surface opposite to the surface facing the light absorption layer, between the light reflection layer and the light absorption layer, or on a surface opposite to the light reflection layer of the light absorption layer A color film may be provided.
  • the color film has L * a * b * on the color coordinate CIE L * a * b * of the decorative member in the presence of the color film as compared with the case where the color film is not provided.
  • the color difference DELTA E * ab which is the distance in the space of b *, exceeds 1.
  • a substrate is provided on the opposite surface of the light reflecting layer opposite to the light absorbing layer, or on the opposite surface of the light absorbing layer facing the light reflecting layer.
  • the substrate is provided on the opposite surface of the light reflecting layer opposite to the light absorbing layer, and the color film is provided between the substrate and the light reflecting layer or on the opposite surface of the substrate facing the light reflecting layer .
  • the base material is provided on the opposite surface of the light absorbing layer opposite to the light reflection layer, and the color film is provided on the opposite side of the base material and the light absorbing layer, or on the surface of the base material opposite to the light absorbing layer .
  • the light absorbing layer includes two or more points having different thicknesses.
  • the light absorbing layer includes two or more regions having different thicknesses.
  • the light absorbing layer includes at least one region having an inclined surface whose upper surface has an inclination angle of more than 0 degrees and not more than 90 degrees, and the light absorbing layer has a thickness And at least one region having a thickness different from the thickness.
  • the light absorbing layer includes at least one region whose thickness gradually changes.
  • the light absorbing layer includes at least one region having an inclined surface whose top surface has an inclination angle of more than 0 degrees and not more than 90 degrees, and a region having at least one inclined surface, . ≪ / RTI >
  • the light absorption layer has an extinction coefficient (k) value of more than 0 and 4 or less, preferably 0.01 to 4 at 400 nm.
  • the decorative member is a household article requiring a decorative film, a case of a mobile device, or an appliance case or color decoration.
  • external light is absorbed in each of the reflecting paths when the incident light is incident through the decorative member and reflected by the reflecting mirror, and the external light is reflected by the surface of the light absorbing layer and the surface of the light reflecting layer, respectively
  • a constructive interference and a destructive interference phenomenon occur between the reflected light on the surface of the light absorption layer and the reflected light on the surface of the light reflection layer.
  • a specific color can be expressed through the above-described incidence path and the phenomenon of light absorption, constructive interference, and destructive interference in the reflector path. Therefore, a specific color can be realized according to the reflectance spectrum and the composition of the light absorbing layer depending on the material of the light reflecting layer.
  • the color to be expressed has thickness dependency, the color can be changed according to the thickness even when the same material composition is used.
  • the light absorption layer is made of Si, which is a single material, uniformity due to a single material can be ensured unlike a composite material produced by interaction of a target material and a gas
  • the width of color that can be realized can be further increased even when the material and thickness of the light reflection layer and the light absorption layer are determined.
  • the color change width due to the addition of the color film can be defined as a color difference (E * ab) which is a difference between L * a * b * before and after application of the color film.
  • the light absorbing layer has two or more points or regions having different thicknesses on the same surface, so that a plurality of colors can be expressed.
  • the light absorbing layer when the upper surface of the light absorbing layer has at least one inclined surface, it is possible to realize a change in color developed according to the viewing angle, and in addition, the light absorbing layer can be manufactured to have two or more regions having different thicknesses by a simple process.
  • FIG. 1 illustrates a laminated structure of decorative members according to an embodiment of the present invention.
  • Fig. 2 is a schematic diagram for explaining the principle of color development in a light reflection layer and a light absorption layer structure.
  • 3 to 6 illustrate a laminated structure of decorative members according to embodiments of the present invention.
  • Figs. 7 to 10 illustrate the top surface structure of the light absorbing layer of the decorative member according to the embodiments of the present application.
  • 11 to 14 illustrate a laminated structure of decorative members according to embodiments of the present invention.
  • Figs. 15 and 16 show the hue of the decorative member manufactured in the embodiment and the comparative example, respectively.
  • 17 is a graph showing the refractive index (n) and the extinction coefficient (k) of silicon.
  • 19 is a diagram showing a method of distinguishing between a light absorbing layer and a light reflecting layer.
  • &quot point " means one position that does not have an area.
  • the above expression is used to indicate that there are two or more points where the thicknesses of the light absorbing layers are different from each other.
  • " region " represents a portion having a certain area.
  • the decorating member is placed on the ground so that the light reflecting layer is on the bottom and the light absorbing layer is on the top, and both ends of the inclined surface or both ends having the same thickness are vertically divided with respect to the ground, Refers to an area divided by both ends, and an area having the same thickness means an area divided by both ends having the same thickness.
  • " face " or " region &quot may be plane, but not limited thereto, all or part may be curved.
  • shape of the vertical cross section may include a structure of a circle, a part of an arc of an ellipse, a wave structure, and a zigzag structure.
  • &quot inclined surface " means a surface having an angle formed by the upper surface with respect to the ground when the decorative member is placed on the ground such that the light reflection layer is on the lower side and the light absorption layer is on the upper side. do.
  • the "thickness" of any layer means the shortest distance from the lower surface to the upper surface of the layer.
  • the term " layer " means that at least 70% of the area in which the layer is present is covered. , Preferably at least 75%, more preferably at least 80%.
  • the decorative member according to one embodiment of the present application is characterized by including a light reflecting layer and a light absorbing layer provided on the light reflecting layer and containing Si.
  • Fig. 1 illustrates the structure of a decorative member including the light reflection layer 201 and the light absorption layer 301.
  • the light absorption layer 301 includes Si.
  • the light absorbing layer 301 is characterized by containing Si itself not being an oxide or nitride of Si.
  • each layer is laminated in the order of L i-1 layer, L i layer and L i + 1 layer in the order of light incoming direction, and between the L i-1 layer and the L i layer
  • the interface I i is located, and the interface I i + 1 is located between the L i layer and the L i + 1 layer.
  • the reflectance at the interface Ii can be expressed by the following equation (1).
  • K i ( ⁇ ) is an extinction coefficient according to the wavelength ⁇ of the i-th layer
  • n i ( ⁇ ) denotes a refractive index according to the wavelength ⁇ of the i-th layer, .
  • the extinction coefficient is a measure to define how strongly an object absorbs light at a specific wavelength, and the definition is as described above.
  • Equation (2) When the sum of the reflectances of the respective wavelengths at the interface I i calculated at each wavelength is defined as R i by applying Equation (1), R i is represented by Equation (2) below.
  • the light absorbing layer containing Si may be made of only Si.
  • the light absorbing layer may be made of only Si, or may be made of an alloy of Si and a metal.
  • the light absorbing layer containing Si may be composed of an alloy layer of Si and a metal in addition to Si.
  • the metal that can be used in the alloy may be, but not limited to, Al, Cu, Ti, Mo, and the like.
  • the light absorbing layer containing Si may be formed by a vapor deposition method.
  • Deposition methods include sputtering, evaporation, plating, atomic layer deposition (ALD), aerosol deposition, and the like.
  • the Si-containing light absorbing layer has an extinction coefficient (k) at 400 nm, preferably 380 to 780 nm, such as an extinction coefficient of 0.01-4, 0.01-3.5, or 0.01 to 3, Lt; / RTI >
  • the light absorbing layer may be a single layer, or may be a multilayer of two or more layers.
  • FIG. 2 shows a schematic diagram of such a working principle. 2 illustrates a structure in which the substrate 101 is provided on the side of the light reflection layer 201. However, the structure is not limited to this structure, and the positions of the substrate 101 may be arranged at different positions as described later .
  • the pattern when the light absorbing layer includes a pattern, the pattern may be a symmetric structure, an asymmetric structure, or a combination thereof.
  • the light absorbing layer may include a pattern of a symmetric structure.
  • the symmetric structure includes a prism structure, a lenticular lens structure, and the like.
  • the light absorbing layer may include a pattern of an asymmetric structure.
  • an asymmetric structure means that it has an asymmetric structure on at least one surface when viewed from the top, side or cross section.
  • the decorative member can exhibit dichroism. Dichroism means that different colors are observed depending on the viewing angle.
  • Dichroism is related to the above-mentioned color difference , And it can be defined that dichroism exists when the color difference according to viewing angle is ⁇ E * ab> 1.
  • the light absorbing layer may be one having a dichroism of DELTA E * ab > 1.
  • the upper surface of the light absorbing layer may be a pattern having a protrusion or groove portion in the form of a cone, a pattern having a protrusion portion having a peak point in a linear shape or a groove portion having a linear point in a bottom point, A protrusion or a groove.
  • the light absorbing layer includes a pattern whose upper surface has a protruding portion or a groove portion in the form of a cone.
  • the cone shape includes the shape of a cone, a cone, or a polygonal cone.
  • the shape of the bottom surface of a polygonal horn is triangular, square, and star shape with five or more protruding points.
  • the cone shape may be in the form of a protrusion formed on the upper surface of the light absorbing layer or in the form of a groove formed on the upper surface of the light absorbing layer.
  • the projecting portion is triangular in cross section, and the groove has an inverted triangular cross section.
  • the lower surface of the light absorbing layer may have the same shape as the upper surface of the light absorbing layer.
  • the cone-shaped pattern may have an asymmetric structure.
  • the cone-shaped pattern when the cone-shaped pattern is observed on the upper surface, when three or more identical shapes exist when the cone is rotated 360 degrees with respect to the vertex of the cone, dichroism is hardly expressed from the pattern. However, when the cone-shaped pattern is observed on the upper surface, dichroism can be expressed when there are two or less of the same shapes when the cone is rotated 360 degrees from the vertex of the cone.
  • Fig. 7 shows a top view of a cone shape.
  • Fig. 7 (a) shows a cone shape of a symmetric structure
  • Fig. 7 (b) shows a cone shape of an asymmetric structure.
  • the cone shape of symmetrical structure is a structure in which the bottom face of the cone shape is a circle or regular polygon having the same length on each side and the vertex of the cone is on the vertical line of the center of gravity of the bottom face.
  • the position of the vertex of the cone is located on the vertical line of the point other than the center of gravity of the floor surface, or the polygonal or elliptical structure to be.
  • the bottom surface is a polygon having an asymmetric structure, at least one of the sides or angles of the polygon can be designed differently from the rest.
  • the position of the vertex of the cone can be changed. Specifically, when the vertex of the cone is located on the vertical line of the center of gravity (01) of the floor when observing from the upper surface as shown in the first figure of FIG. 8, (4 fold symmetry). However, the symmetrical structure is broken by designing the vertex of the cone at the position 02 instead of the center of gravity 01 of the floor surface.
  • the length of one side of the bottom surface is x
  • the distance of movement of the vertex of the cone is a and b
  • the height of the cone shape which is the length of the line vertically connecting the vertex (01 or 02) of the cone to the bottom is h
  • a coincidence value can be obtained with respect to the plane 1, plane 2, plane 3 and plane 4 in Fig. 8 as follows.
  • the light absorbing layer includes a pattern in which the peak has a line-shaped protrusion or a bottom point has a line-shaped groove.
  • the line shape may be a linear shape, a curved shape, or both a curve and a straight line.
  • FIG. 9 is a top view of a pattern having a line-shaped protrusion, wherein (a) illustrates a pattern having a line-shaped protrusion that does not exhibit dichroism, (b) As shown in Fig. 9A is an isosceles triangle or an equilateral triangle, and the Y-Y 'cross section of FIG. 9B is a triangle having side lengths different from each other.
  • the light absorbing layer includes a pattern having a protruding portion or a groove portion whose upper surface is a cone-shaped upper surface cut-out structure.
  • the cross-section of such a pattern may be trapezoidal or inverted trapezoidal.
  • dichroism can be expressed by designing the top surface, the side surface, or the cross section to have an asymmetric structure.
  • FIG. 10 Various protrusions or groove patterns as shown in FIG. 10 may be implemented in addition to the structures exemplified above.
  • the light absorbing layer may include two or more regions having different thicknesses.
  • Fig. 3 and 4 illustrate a structure in which the light reflection layer 201 and the light absorption layer 301 are laminated.
  • the substrate 101 may be provided on the light reflecting layer 201 side or on the light absorbing layer 301 side.
  • the light absorbing layer 301 has two or more points having different thicknesses from each other.
  • the thickness of the light absorbing layer 301 at the point A and the point B is different.
  • the thickness of the light absorbing layer 301 in the C region and the D region is different.
  • the light absorbing layer includes at least one region having an inclined surface whose upper surface has an inclination angle of more than 0 degrees and not more than 90 degrees, and the light absorbing layer has a thickness And at least one region having a thickness different from the thickness.
  • the surface characteristics such as the inclination of the upper surface of the light reflecting layer may be the same as the upper surface of the light absorbing layer.
  • the upper surface of the light absorbing layer may have the same inclination as the upper surface of the light reflecting layer by using the vapor deposition method when forming the light absorbing layer.
  • Fig. 5 illustrates the structure of a decorative member having a light absorbing layer whose top surface has an inclined surface.
  • the thickness t1 of the light absorbing layer 301 in the E region and the thickness t2 in the F region are different from each other in the structure in which the substrate 101, the light reflecting layer 201 and the light absorbing layer 301 are laminated.
  • Fig. 5 relates to a light absorbing layer having a sloped surface facing each other, that is, a triangular section.
  • the thickness of the light absorbing layer may be varied on two surfaces of the triangular structure even if deposition proceeds under the same conditions in the structure of the pattern having the inclined surfaces facing each other.
  • a light absorbing layer having two or more regions having different thicknesses can be formed by only one step.
  • the color hue differs depending on the thickness of the light absorbing layer.
  • the thickness of the light reflecting layer is more than a predetermined value, the color change is not affected.
  • 5 illustrates a structure in which the substrate 101 is provided on the side of the light reflection layer 201.
  • the structure is not limited to this structure, and the positions of the substrate 101 may be arranged at different positions as described above .
  • 5 has a flat surface in contact with the light reflecting layer 201 and a surface of the base 101 in contact with the light reflecting layer 201 is a pattern having the same slope as the top surface of the light reflecting layer 201 Lt; / RTI >
  • the difference in the thickness of the light absorbing layer may also be caused by the difference in the inclination of the pattern of the base material.
  • the present invention is not limited thereto, and the thickness of the light absorbing layer may be different on both sides of the pattern, so that the above-described dichroism can be exhibited even if the substrate and the light absorbing layer have different inclination using another vapor deposition method.
  • the light absorbing layer includes at least one region whose thickness gradually changes. According to Fig. 3, the structure in which the thickness of the light absorbing layer gradually changes is illustrated.
  • the light absorbing layer includes at least one region having an inclined surface whose top surface has an inclination angle of more than 0 degrees and not more than 90 degrees, and a region having at least one inclined surface, . ≪ / RTI > Fig. 6 illustrates the structure of the light absorbing layer including a region having a sloped upper surface. Both the G region and the H region of Fig. 6 have a structure in which the upper surface of the light absorbing layer has an inclined surface and the thickness of the light absorbing layer gradually changes.
  • the light absorbing layer may include a first region having a first inclined plane whose inclination angle is within a range of 1 to 90 degrees, and an upper face may be inclined differently from the first inclined plane, Or a second area whose top surface is horizontal. At this time, the thickness of the light absorbing layer in the first region and the second region may be different from each other.
  • the light absorbing layer may include a first region having a first inclined face whose inclination angle is within a range of 1 to 90 degrees, and the upper face may be different from the first inclined face in inclination direction, And may further include two or more regions having an inclined plane or a top plane. At this time, the thicknesses of the light absorbing layers in the first region and the two or more regions may be different from each other.
  • the decorative member is disposed on the opposite side of the light reflection layer opposite to the light absorption layer, between the light reflection layer and the light absorption layer, or opposite to the light reflection layer of the light absorption layer And a color film provided on the opposite side of the surface.
  • the color film has a chromaticity difference DELTA E * a * b * in the space of L * a * b * on the chromaticity coordinates CIE L * a * b * of the decorative member in the presence of the color film, * Ab is not particularly limited as long as it exceeds 1.
  • the color representation can be expressed as CIE L * a * b *, and the color difference can be defined using the distance ( ⁇ E * ab) in the L * a * b * space. Specifically, , And observers can not induce a color difference within the range of 0 ⁇ DELTA E * ab ⁇ 1 (Reference: Machine Graphics and Vision 20 (4): 383-411). Therefore, in this specification, the color difference due to the addition of the color film can be defined as DELTA E * ab > 1.
  • Fig. 11 shows a color conversion layer including a color film.
  • Fig. 11 shows a structure in which a light reflection layer 201, a light absorption layer 301 and a color film 401 are sequentially laminated in Fig. 11 (a) a structure in which the light reflection layer 201, the color film 401 and the light absorption layer 301 are sequentially stacked on the light reflection film 201, the light reflection film 201, And the absorbing layer 301 are sequentially laminated.
  • the color film may serve as a substrate.
  • it can be used as a color film by adding a dye or pigment to what can be used as a substrate.
  • the opposite surface of the light reflection layer opposite to the light absorption layer (Fig. 12 (a)); Or the substrate may be provided on the opposite surface (FIG. 12 (b)) of the surface of the light absorbing layer opposed to the light reflection layer.
  • the substrate when the substrate is provided on the opposite surface of the light reflecting layer opposite to the light absorbing layer, and the color film is located on the opposite surface of the light reflecting layer opposite to the light absorbing layer, Between the substrate and the light reflective layer; Or on the opposite surface of the substrate facing the light reflection layer.
  • the substrate when the substrate is provided on the opposite surface of the light absorbing layer opposite to the light reflecting layer, and the color film is located on the opposite side of the light absorbing layer to the light reflecting layer, The color film being disposed between the substrate and the light absorbing layer; Or on the opposite surface of the substrate facing the light absorption layer.
  • a substrate is provided on the opposite surface of the light reflecting layer opposite to the light absorbing layer, and a color film is additionally provided.
  • 13A shows a structure in which the color film 401 is provided on the opposite surface of the light absorbing layer 301 on the side of the light reflection layer 201.
  • the color film 401 has a structure in which the light absorbing layer 301 A structure in which a color film 401 is provided between the light reflection layer 201 and the base material 101 and a structure in which a color film 401 is provided between the light reflection layer 201 and the base material 101 is shown in Figure 13 (c) And a film 401 is provided on the opposite surface of the substrate 101 on the light reflection layer 201 side.
  • the color films 401a, 401b, 401c and 401d are respectively disposed on opposite sides of the light absorbing layer 301 on the light reflecting layer 201 side, between the light absorbing layer 301 and the light reflecting layer 201, but the present invention is not limited thereto and the color films 401a, 401b, 401c, and 401c may be formed on the opposite surfaces of the reflective layer 201 and the substrate 101, 401d may be omitted.
  • a substrate is provided on the opposite surface of the light absorbing layer to the light reflecting layer, and a color film is additionally provided.
  • 14A shows a structure in which the color film 401 is provided on the opposite surface of the substrate 101 on the side of the light absorbing layer 301.
  • FIG. 14B shows a structure in which the color film 401 is provided on the substrate 101 A structure in which the color film 401 is provided between the light absorbing layer 301 and the light reflecting layer 201 is shown in Fig. 14C, a structure in which the color film 401 is provided between the light absorbing layer 301 and the light reflecting layer 201, (401) is provided on the opposite surface of the light reflection layer (201) on the side of the light absorption layer (301).
  • color films 401a, 401b, 401c and 401d are disposed on the opposite side of the substrate 101 on the side of the light absorbing layer 301, between the substrate 101 and the light absorbing layer 301,
  • the present invention is not limited thereto and the color films 401a, 401b, and 401c (not shown in the drawings) may be used as the light reflection layer 201 , And 401d may be omitted.
  • the transmittance is 1% or more, preferably 3% or more, and more preferably 5% or more. This is because the transmitted light can be mixed with the color of the color film in the visible light transmittance range.
  • the color film may be provided in a state in which one sheet or two or more sheets of the same kind or different types are laminated.
  • the color film may be combined with the color developed from the above-described laminated structure of the light reflection layer and the light absorption layer to exhibit a desired color.
  • a color film may be used in which one or more of pigments and dyes are dispersed in the matrix resin to exhibit color.
  • the color film may be formed by coating a composition for forming a color film directly at a position where the color film may be formed, or may be formed by coating a composition for forming a color film on a separate substrate, Method is used to manufacture a color film, and then a color film is placed or adhered to a position where the color film can be provided.
  • the coating method may be a wet coating or a dry coating.
  • the pigments and dyes that can be included in the color film may be selected from those known in the art as those capable of achieving a desired color from the final decorating material, and may be selected from red, yellow, And pigments and dyes such as pigments, pigments, pigments, pigments, etc. Specific examples thereof include perinone red dyes, anthraquinone dyes, anthraquinone dyes, methine dyes, anthraquinone dyes, anthraquinone dyes, phthalocyanine dyes, thioindigo dyes, isoindigo dyes, Dyes such as isoxindigo-based pink dyes may be used alone or in combination.
  • Carbon black, copper phthalocyanine (CI Pigment Blue 15: 3), C.I. Pigment Red 112, Pigment blue, and Isoindoline yellow may be used alone or in combination.
  • Commercially available materials such as dyes or pigments may be used.
  • materials such as Ciba ORACET Co., Ltd. or Chohwa Paint Co., Ltd. can be used.
  • the types of the dyes or pigments and their hue are merely examples, and known dyes or pigments can be used in various ways, thereby realizing more various colors.
  • the matrix resin included in the color film materials known as materials such as a transparent film, a primer layer, an adhesive layer, and a coating layer can be used, and the material is not particularly limited thereto.
  • materials such as an acrylic resin, a polyethylene terephthalate resin, a urethane resin, a linear olefin resin, a cycloolefin resin, an epoxy resin, and a triacetylcellulose resin may be selected. Mixtures may also be used.
  • the color film has a light transmittance of not less than 1%, preferably not less than 2%, more preferably not less than 3%, of a hue expressed from a light reflecting layer, a light absorbing layer or a laminated structure of a light reflecting layer and a light absorbing layer desirable.
  • hues expressed from the color film and the light reflected from the light reflecting layer, the light absorbing layer, or the laminated structure thereof can be combined together to achieve a desired color.
  • the thickness of the color film is not particularly limited and may be selected by a person skilled in the art if the color can be displayed in a desired color.
  • the thickness of the color film may be 500 nm to 1 mm.
  • the light absorption layer can be implemented in various colors according to the refractive index (n), the extinction coefficient (k), and the thickness (t). It is also understood that various colors can be realized by adjusting the thickness of the light absorbing layer and the inclination angle of the upper surface. In addition, by providing a color film, more various colors can be realized.
  • the light reflecting layer is not particularly limited as long as it is a material capable of reflecting light, but the light reflectance can be determined depending on the material, and for example, the color can be easily realized at 50% or more.
  • the light reflectance can be measured using an ellipsometer.
  • the light absorption layer preferably has a refractive index (n) of 0 to 8 at 400 nm, may be 0 to 7, may be 0.01 to 3, and may be 2 to 2.5.
  • the refractive index n can be calculated as sin? 1 / sin? 2 (? 1 is the angle of light incident from the surface of the light absorption layer, and? 2 is the refraction angle of light within the light absorption layer).
  • the light absorption layer preferably has a refractive index (n) of 0 to 8 at 380 to 780 nm, may be 0 to 7, may be 0.01 to 3, and may be 2 to 2.5.
  • the light absorption layer preferably has an extinction coefficient (k) of more than 0 and less than 4 at 400 nm, preferably 0.01 to 4, may be 0.01 to 3.5, may be 0.01 to 3, and may be 0.1 to 1.
  • the extinction coefficient k is a value obtained by multiplying the reduction ratio dI / I of the intensity of light per unit length (dx), e.g., 1 m, in the light absorbing layer by? / 4? , Where lambda is the wavelength of light.
  • the light absorption layer preferably has an extinction coefficient (k) of more than 0 and less than 4, preferably 0.01 to 4, more preferably 0.01 to 3.5, more preferably 0.01 to 3, and more preferably 0.1 to 1 at 380 to 780 nm.
  • the extinction coefficient (k) is in the range of 400 nm, preferably 380 to 780 nm in the entire wavelength range of visible light, it can serve as a light absorbing layer for the entire visible light.
  • the extinction coefficient k and refractive index n of silicon (Si) itself are shown in Fig. At 380 to 780 nm, the refractive index is 0 to 8 and the extinction coefficient is 0.1-1, specifically 0.4-0.8.
  • the spectrum that absorbs light differs.
  • the absorption wavelength band is fixed and only the absorption amount changes depending on the change in coating thickness.
  • a thickness variation of at least several micrometers is necessary in order to adjust the light absorption amount.
  • the wavelength range of light to be absorbed varies even if the thickness changes to several tens or nanometers scale.
  • the light reflecting layer may be a metal layer, a metal oxide layer, a metal nitride layer, a metal oxynitride layer, a carbon or carbon composite layer, or an inorganic layer.
  • the light reflection layer may be formed of a single layer, or may be composed of two or more layers.
  • the light reflection layer may be formed of a material selected from the group consisting of indium (In), tin (Sn), silicon (Si), aluminum (Al), copper (Cu), nickel (Ni), vanadium (V), tungsten At least one selected from the group consisting of Ta, Mo, neodymium, titanium, iron, chromium, cobalt, gold and silver. Or a multi-layered structure including one or more materials selected from the group consisting of the above materials, oxides, nitrides or oxynitrides thereof, and carbon and carbon composites.
  • the light reflecting layer may comprise two or more alloys selected from the above materials, oxides thereof, nitrides or oxynitrides, and more specifically may include molybdenum, aluminum or copper.
  • the light reflection layer may be manufactured using an ink including a carbon or carbon composite, thereby realizing a high-resistance reflection layer.
  • the carbon or carbon composite include carbon black and CNT.
  • the ink containing the carbon or carbon composite material may include the above-described materials or oxides, nitrides or oxynitrides thereof, and examples thereof include indium (In), titanium (Ti), tin (Sn), silicon (Si) Ge).
  • the light reflection layer includes two or more kinds of materials
  • two or more kinds of materials may be formed by one process, for example, a deposition or printing method.
  • a method of forming a layer thereon with one or more kinds of materials may be used.
  • an ink containing carbon may be printed and cured to form a light reflection layer.
  • the ink may further include an oxide such as titanium oxide or silicon oxide.
  • the thickness of the light reflection layer can be determined according to a desired color in the final structure, and is, for example, 1 nm or more, preferably 25 nm or more, such as 50 nm or more, preferably 70 nm or more.
  • the thickness of the light absorbing layer may be 5 to 500 nm, for example 30 to 500 nm.
  • the thickness difference of the light absorbing layer in each region is 2 to 200 nm and can be determined according to a desired color difference.
  • the light reflection layer may further include a substrate provided on a lower surface of the light reflecting layer or on an upper surface of the light absorbing layer.
  • the surface characteristics such as the inclination of the upper surface of the substrate may be the same as the upper surface of the light reflection layer and the light absorption layer.
  • the light reflecting layer and the light absorbing layer are formed by the vapor deposition method, so that the substrate, light reflecting layer and light absorbing layer can have inclined surfaces at the same angle.
  • such a structure can be realized by forming an inclined surface or a three-dimensional structure on an upper surface of a substrate, depositing a light reflecting layer and a light absorbing layer on the substrate sequentially, or sequentially depositing a light absorbing layer and a light reflecting layer.
  • forming a sloped surface or a three-dimensional structure on the surface of the substrate can be carried out by forming a pattern on the ultraviolet curable resin and curing it by using ultraviolet rays, or by laser processing.
  • the decorative member may be a case of a deco film or a mobile device.
  • the decorative member may further include an adhesive layer as needed.
  • the material of the substrate is not particularly limited, and when forming a sloped surface or a steric structure in the above-described manner, a UV-curable resin known in the art can be used.
  • a protective layer may be further provided on the light absorption layer.
  • the adhesive layer may be further provided on the opposite surface of the substrate having the light absorbing layer or the light reflecting layer.
  • This adhesive layer may be an optically clear adhesive (OCA) layer.
  • OCA optically clear adhesive
  • a release liner may be additionally provided for protection if necessary.
  • a deposition such as a sputtering method as an example of a method of forming a light reflecting layer and a light absorbing layer
  • vapor deposition chemical vapor deposition (CVD), wet coating, or the like can be used.
  • FIG. 15 shows a simulation result of the color change according to the thickness variation of Si by using n and k values of Si in such a structure. It can be seen from FIG. 15 that in the case of Example 1, various colors appear in the range of 10 to 100 nm due to the influence of Si having k value. 17 is a graph showing the refractive index (n) and the extinction coefficient (k) of silicon.
  • FIG. 16 shows a simulation result of the color change according to the thickness change of the silicon oxide by using the n and k values of the silicon oxide in such a structure.
  • n refractive index
  • k extinction coefficient

Landscapes

  • Laminated Bodies (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

La présente invention concerne un élément décoratif comprenant : une couche de réflexion de lumière; et une couche d'absorption de lumière sur la couche de réflexion de lumière, et contenant du Si.
PCT/KR2018/007284 2017-06-27 2018-06-27 Élément décoratif et procédé de fabrication associé Ceased WO2019004725A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201880038224.8A CN110770015B (zh) 2017-06-27 2018-06-27 装饰构件及其制造方法
JP2019564169A JP7014359B2 (ja) 2017-06-27 2018-06-27 装飾部材およびその製造方法
EP18824465.1A EP3647049B1 (fr) 2017-06-27 2018-06-27 Élément décoratif et procédé de fabrication associé
US16/616,861 US11559966B2 (en) 2017-06-27 2018-06-27 Decorative member and manufacturing method therefor

Applications Claiming Priority (4)

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KR20170081419 2017-06-27
KR10-2017-0081419 2017-06-27
KR10-2017-0136828 2017-10-20
KR1020170136828A KR101925467B1 (ko) 2017-06-27 2017-10-20 장식 부재 및 이의 제조방법

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KR20170081419A (ko) 2016-01-04 2017-07-12 엘지전자 주식회사 디스플레이 장치 및 그의 동작 방법
KR20170136828A (ko) 2016-06-02 2017-12-12 삼성전자주식회사 영상 처리 장치, 그의 영상 처리 방법 및 비일시적 컴퓨터 판독가능 기록매체

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