阅读说明：本技术 装饰构件 (Decorative member ) 是由 金容赞 金起焕 许南瑟雅 孙政佑 曹弼盛 于 2019-04-10 设计创作，主要内容包括：本发明涉及一种装饰构件,该装饰构件通过包括具有氧化铜的同时以一定比例控制各元素的含量的光吸收层而表现出冷色调,该装饰构件具有根据观察方向表现出不同颜色的二向色性,并且包括：显色层,所述显色层包括光反射层和设置在光反射层上的光吸收层,以提供具有二向色性的改善的可见性的装饰构件；以及基板,所述基板设置在显色层的一个表面上,其中,光吸收层包括氧化铜。(The present invention relates to a decorative member that exhibits a cool tone by including a light absorbing layer having copper oxide while controlling the contents of elements in a certain ratio, has dichroism that exhibits different colors according to an observation direction, and includes: a color-developing layer including a light-reflecting layer and a light-absorbing layer disposed on the light-reflecting layer to provide a decorative member having improved visibility of dichroism; and a substrate disposed on one surface of the color developing layer, wherein the light absorbing layer includes copper oxide.)

1. A trim member comprising:

a color-developing layer including a light-reflecting layer and a light-absorbing layer disposed on the light-reflecting layer; and

a substrate disposed on one surface of the color developing layer,

wherein the light absorption layer comprises copper oxide (Cu)_aO_x) (ii) a And is

When a component analysis is performed on any point of the light absorbing layer, ω represented by the following formula 1 is 0.61 or more and 1.2 or less:

[ formula 1]

ω＝(T_x)×(σ_x)

[ formula 2]

f(T₁)＝f(T₁+n×T₀)

[ formula 3]

In formula 1, T_xIs composed of f (T)₁) Dependence of the function represented on T₁N is a positive integer of 1 or more, σ_xAs represented by the formula 3, and is,

in formula 2, T₁Is the thickness, T, of the light-absorbing layer including the any point of the light-absorbing layer where the composition analysis is performed₀Is 60nm, and

in formula 3, a represents the elemental content ratio of copper (Cu), and x represents the elemental content ratio of oxygen (O).

2. The trim member of claim 1 wherein T_x0.51 or more and 1 or less.

3. The trim member of claim 1 wherein σ_x0.1 to 3 inclusive.

4. The decoration element according to claim 1 wherein, the hue angle h in the CIE Lch color space of the light absorbing layer is in the range of 105 ° to 315 °.

5. The decoration element according to claim 1 wherein, the light reflection layer is a single layer or a plurality of layers comprising: one or more materials selected from 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 (Nd), iron (Fe), chromium (Cr), cobalt (Co), gold (Au), and silver (Ag); an oxide thereof; a nitride thereof; nitrogen oxides thereof; carbon and carbon composites.

6. The decoration member according to claim 1 wherein, the light absorption layer has a refractive index of 0 to 8 at a wavelength of 400 nm.

7. The decoration member according to claim 1 wherein an extinction coefficient of the light absorbing layer at a wavelength of 400nm is greater than 0 and 4 or less.

8. The decoration member according to claim 1 wherein, the light absorption layer includes two or more dots having different thicknesses.

9. The decoration member according to claim 1, wherein the color developing layer further comprises a color film.

10. The decoration member according to claim 1, wherein the color developing layer or the substrate includes a pattern layer.

11. The decoration member according to claim 10 wherein, the pattern layer comprises a convex shape or a concave shape having a cross section of an asymmetric structure.

12. The trim member of claim 1, having a dichroism of Δ Ε ab > 1.

13. The decoration member according to claim 1 wherein, the substrate comprises a plastic injection molding for a cosmetic container or a glass substrate.

14. The decoration member according to claim 13 wherein, the plastic injection molding includes one or more of 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 (SAN).

Technical Field

This application claims priority and benefit to korean patent application No.10-2018-0041562 filed on 10.4.2018 and korean patent application No.10-2018-0132095 filed on 31.10.2018 to the korean intellectual property office, the entire contents of which are incorporated herein by reference.

The present application relates to a decoration member.

Background

For cosmetic containers, various mobile devices, and electronic products, product designs such as colors, shapes, and patterns play an important role in providing a product value to customers, in addition to product functions. Product preferences and price are also design dependent.

For a compact container of cosmetics as one example, various methods are used to obtain a variety of colors and color senses and to use in products. A method of providing color to the housing material itself, and a method of providing a design by attaching a decorative film realizing color and shape to the housing material may be included.

In the existing decorative film, an attempt has been made to develop color by a method such as printing and deposition. When various colors are expressed on a single surface, printing needs to be performed more than twice, and when various colors are applied to a three-dimensional pattern, the implementation is hardly realistic. In addition, the existing decorative film has a fixed color depending on the viewing angle, and even when having a slight change, the change is limited to only a difference in color sense.

Disclosure of Invention

Technical problem

The present application is directed to a trim member.

Technical scheme

One embodiment of the present application provides a decoration element including: a color development layer including a light reflection layer and a light absorption layer disposed on the light reflection layer; and a substrate disposed on one surface of the color developing layer, wherein the light absorbing layer comprises copper oxide (Cu)_aO_x) And ω represented by the following formula 1 is 0.61 or more and 1.2 or less when the composition analysis is performed on any point of the light absorbing layer.

[ formula 1]

ω＝(T_x)×(σ_x)

[ formula 2]

f(T₁)＝f(T₁+n×T₀)

[ formula 3]

In formula 1, T_xIs composed of f (T)₁) Dependence of the function represented on T₁N is a positive integer of 1 or more, σ_xAs represented by the formula 3, and is,

in formula 2, T₁Is the thickness, T, of the light-absorbing layer including any point of the light-absorbing layer for component analysis₀Is 60nm, and

in formula 3, a represents the elemental content ratio of copper (Cu), and x represents the elemental content ratio of oxygen (O).

Advantageous effects

The decoration member according to one embodiment of the present specification can display a cool tone color by including the light absorption layer having copper oxide and the content of each element is adjusted to a specific ratio.

Provided is a decorative member having dichroism that displays different colors according to the observation direction, and the visibility of the dichroism is improved.

Drawings

FIG. 1 illustrates a trim member according to one embodiment of the present description.

Fig. 2 illustrates a method of distinguishing between a light absorbing layer and a light reflecting layer.

Fig. 3 shows one point of the light absorbing layer and the thickness of the light absorbing layer including the point.

Fig. 4 illustrates the principle of light interference in the light absorbing layer and the light reflecting layer.

Fig. 5 to 13 respectively show a decoration member according to an embodiment of the present specification.

Fig. 14 to 31 show the shape of the pattern layer.

Fig. 32 and 33 show a warm tone and a cool tone.

Fig. 34 shows colors (evaluation of colors) according to the evaluation example.

Fig. 35 is a graph according to equation 2.

Detailed Description

Hereinafter, the present specification will be described in detail.

In this specification, unless defined otherwise, "or" means to include those listed either selectively or in their entirety, that is, to have the meaning of "and/or".

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

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

In the present specification, the color displayed by the decoration member may be defined by the spectral characteristics of the light source, the reflectivity of the object, and the color visual efficiency of the observer.

In order to objectively express colors, it is necessary to measure colors in a standard light source and a standard observer and express the colors in coordinates of a color space. The color of the decoration element may be displayed by CIE Lab (L a b) coordinates or Lch coordinates providing a visually uniform color space. L denotes brightness, + a denotes red, + a denotes green, + b denotes yellow, b denotes blue, and C and h will be described later. In color space, the total color difference according to the viewing position can be expressed as

ΔE*ab＝√{(ΔL)²+(Δa)²+(Δb)²}。

The measurement may be performed using a spectrophotometer (CM-2600d, manufactured by konica minolta corporation), the reflectance of the sample is measured by the spectrophotometer, and the reflectance for each wavelength may be obtained, whereby a spectral reflectance map and converted color coordinates may be obtained. Here, data was obtained at a viewing angle of 8 degrees, and in order to observe dichroism of the decoration member, measurement was performed in the horizontal direction and the vertical direction with respect to the decoration member.

The viewing angle is an angle formed by a straight line (d1) in the normal direction of the surface of the color layer of the decoration member and a straight line (d2) passing through the spectrophotometer and one point of the decoration member to be measured, and generally has a range of 0 to 90 degrees.

The viewing angle with 0 degree means that measurement is performed in the same direction as the normal direction of the surface of the color layer of the decorative member.

In this specification, the "light absorbing layer" and the "light reflecting layer" are layers having characteristics relative to each other, and the light absorbing layer may refer to a layer having a higher light absorption rate than the light reflecting layer, and the light reflecting layer may refer to a layer having a higher light reflectance than the light absorbing layer.

The light absorbing layer and the light reflecting layer may be formed as a single layer or as a multilayer of two or more layers.

In this specification, the light absorbing layer and the light reflecting layer are named by their functions. For light having a specific wavelength, a layer that reflects relatively much light may be expressed as a light reflecting layer, and a layer that reflects relatively little light may be expressed as a light absorbing layer.

Fig. 1 illustrates a laminated structure of a decoration member according to an embodiment of the present specification. Fig. 1 shows a decorative member including a color-developing layer (100) and a substrate (101). The color-developing layer (100) includes a light-reflecting layer (201) and a light-absorbing layer (301). Fig. 1 shows a structure in which the substrate (101) is disposed on the light absorbing layer (301) side of the color developing layer (100), however, the substrate may be disposed on the light reflecting layer (201) side.

By means of fig. 2, a light absorbing layer and a light reflecting layer are depicted. In the decoration element of fig. 2, the layers are according to L, based on the direction of light entry_i-1Layer, L_iLayer and L_i+1The sequence of layers being laminated, interface I_iAt L_i-1Layer and L_iBetween layers and interface I_i+1At L_iLayer and L_i+1Between the layers.

When light having a specific wavelength is irradiated in a direction perpendicular to the layers so that thin-film interference does not occur, the interface I_iThe reflectivity of (a) can be represented by the following mathematical formula 1.

[ mathematical formula 1]

In the mathematical formula 1, n_i(λ) represents a refractive index depending on the wavelength (λ) of the i-th layer, and k_i(λ) represents an extinction coefficient depending on the wavelength (λ) of the ith layer. Extinction coefficient is defined by absorption of material to be treatedAnd a measure of the intensity of light of a particular wavelength, this definition being the same as that provided later.

Using mathematical formula 1, interface I when calculated at each wavelength_iHas a sum of reflectance of each wavelength of R_iWhen R is_iAs shown in the following mathematical formula 2.

[ mathematical formula 2]

Hereinafter, a decoration member including the light reflection layer and the light absorption layer described above will be described.

One embodiment of the present application provides a decoration element including: a color development layer including a light reflection layer and a light absorption layer disposed on the light reflection layer; a substrate disposed on one surface of the color developing layer, wherein the light absorbing layer comprises copper oxide (Cu)_aO_x) And ω represented by the following formula 1 is 0.61 or more and 1.2 or less when the composition analysis is performed on any point of the light absorbing layer.

[ formula 1]

ω＝(T_x)×(σ_x)

[ formula 2]

f(T₁)＝f(T₁+n×T₀)

[ formula 3]

In formula 1, T_xIs composed of f (T)₁) Dependence of the function represented on T₁N is a positive integer of 1 or more, σ_xAs represented by the formula 3, and is,

in formula 2, T₁Is the thickness, T, of the light-absorbing layer including any point of the light-absorbing layer for component analysis₀Is 60nm, and

in formula 3, a represents the elemental content ratio of copper (Cu), and x represents the elemental content ratio of oxygen (O). For example, when the content of copper (Cu) and the content of oxygen (O) at one point are 50% respectively, a and x may be expressed as 0.5 respectively.

In the present specification, the content ratio of the specific element may refer to an atomic percentage (at%) of the specific element at any point of the light-absorbing layer subjected to the composition analysis.

In the decoration element according to one embodiment of the present specification, by making the light absorption layer include copper oxide (Cu)_aO_x) By adjusting the content ratio of each element of the copper oxide and the thickness of the light-absorbing layer to a specific range, a cold color (cold tone) can be observed through the light-absorbing layer. Here, the relationship between the content ratio of each element of the copper oxide and the thickness of the light absorbing layer may be expressed as a cold tone parameter ω represented by formula 1. The cool tone parameter may be expressed as ω_c。ω_cThe subscript c of (a) represents a cool tone.

In one embodiment of the present specification, ω represented by formula 1 with respect to any point (x) of the light absorbing layer may be 0.65 or more and 1.2 or less, 0.65 or more and 1.1 or less, or 0.66 or more and 1 or less. When the above numerical value range is satisfied, a cool color (cool tone) can be observed through the light absorbing layer, and a color desired by a user among the cool colors can be easily displayed.

In the present specification, "any point of the light absorbing layer" may mean any point on the surface or inside of the light absorbing layer.

In one embodiment of the present specification, T_xIs a thickness parameter represented by formula 2. The warm (warm tone) or cool (cool tone) colors appear alternately as the thickness of the light absorbing layer changes, and with a certain period (T) of the thickness₀) And a color change occurs. Here, T_xCan refer to the thickness (T) of the light absorption layer at any point₁) Constant period (T) relative to the thickness of the light absorbing layer₀) The ratio of (a) to (b). For example, when the constant period of the thickness is 60nm, the light absorbing layer has T at thicknesses of 40nm, 100nm and 160nm_xValue is equal to0.67。

In formula 2, T₁Is the thickness of any point of the light absorbing layer including the light absorbing layer. T is₁Refers to the thickness of the light-absorbing layer including any point of the light-absorbing layer when the point is selected. When the cross section of the decoration member is observed by a Scanning Electron Microscope (SEM) or the like, an interface can be recognized between the light reflection layer and the light absorption layer, and the layer including copper oxide can be recognized as the light absorption layer by composition analysis. Here, any point of the light absorbing layer is selected, and the thickness of the light absorbing layer including any point can be calculated and used as T₁。

Expression 2 represents the thickness (T) depending on the light absorption layer₁) Periodic function f (T)₁). Which means according to the period T₀Having the same f (T)₁) The value is obtained. Which is shown in fig. 35. According to FIG. 35, at (0 < T)₁≤T₀) F (T) occurring within the range of (1)₁) In a certain period (T)₀) Are repeated. E.g. T₁＝0.5T₀F (0.5T) of (g)₀) And T₁＝0.5T₀+T₀F (1.5T) of (g)₀) With the same value of 0.5.

In one embodiment of the present specification, a and x are the same as or different from each other, and may each have a value greater than 0 and less than 1.

In one embodiment of the present description, a + x may be 1.

Thickness T₁It may refer to a length in a thickness direction of the light absorbing layer in a cross section in a direction perpendicular to a surface direction of the light absorbing layer while including any point of the light absorbing layer.

Fig. 3 illustrates a method of determining a point and thickness of the light absorbing layer. When any point (red point in fig. 3) of the light absorbing layer is selected, the content ratio parameter represented by equation 3 is calculated by composition analysis of the point, and the width of a line segment perpendicular to the surface direction of the light absorbing layer among line segments passing through the point is calculated to calculate the thickness (T)₁)。

In addition, it is possible to control the process pressure, the reaction gas against the plasma, used in the deposition when forming the light absorption layerThe flow rate, voltage, deposition time or temperature of the daughter gas to achieve T₁。

In the decoration member of the present disclosure, the cool tone or the warm tone repeatedly appears with a constant period according to the change in the thickness of the light absorbing layer. Here, T₀It can be expressed as "a period of the light absorption layer thickness in which a cool tone repeatedly appears".

The composition analysis of the light absorption layer may use transmission X-ray composition analysis. Specifically, the transmission X-ray composition analysis may be X-ray photoelectron spectroscopy (XPS: X-ray photoelectron spectroscopy).

In formula 3, a represents the elemental content ratio of copper (Cu), and x represents the elemental content ratio of oxygen (O). The element content ratio of each element of the light absorbing layer may be measured using a method generally used in the art, and X-ray photoelectron spectroscopy (XPS) or electron spectroscopy for chemical analysis (ESCA, Thermo fisher scientific Inc.).

In one embodiment of the present description, the thickness parameter Tx may be equal to or greater than 0.51 and equal to or less than 1, preferably equal to or greater than 0.6 and equal to or less than 1, and more preferably equal to or greater than 0.65 and equal to or less than 1. When the above numerical value range is satisfied, a cool color (cool tone) can be more clearly observed in the decorative member.

In one embodiment of the present specification, the content ratio parameter σ_xIt may be 0.1 or more and 3 or less, 0.1 or more and 1.5 or less, preferably 0.3 or more and 1.5 or less, more preferably 0.4 or more and 1.1 or less. When the above numerical value range is satisfied, a cool color (cool tone) can be more clearly observed in the decorative member. The ratio between these elements can be achieved by adjusting the gas ratio (gas fraction) when depositing copper oxide.

Specifically, after qualitative analysis is performed by performing whole element scan (survey scan) on the surface and in the thickness direction of the light absorbing layer using X-ray photoelectron spectroscopy (XPS) or Electron Spectroscopy for Chemical Analysis (ESCA), quantitative analysis is performed by narrow scan (narrow scan). Here, qualitative analysis and quantitative analysis were performed by obtaining full element scan and narrow width scan under the conditions of table 1 below. Peak background intelligent methods were used.

[ TABLE 1]

Element(s)	Scan cross-sectional binding energy	Step size
			Narrow (Snapshot)	20.89eV	0.1eV
Whole element (surfey)	-10eV to 1350 eV	1eV

In addition, the composition analysis may be performed by preparing a cut piece of the light absorbing layer having the same composition as the light absorbing layer before laminating the decorative member. Alternatively, when the decoration element has a structure of substrate/pattern layer/light reflection layer/light absorption layer, the outermost edge of the decoration element may be analyzed using the above-described method. In addition, the light absorbing layer may be visually recognized by observing a photograph of a cross section of the decoration member. For example, when the decoration member has a structure of substrate/pattern layer/light reflection layer/light absorption layer, it is recognized in a photograph of a cross section of the decoration member that an interface exists between the layers, and the outermost layer corresponds to the light absorption layer.

In one embodiment of the present description, the hue angle h in the CIE Lch color space of the light absorbing layer may be in the range of 105 ° to 315 °, in the range of 120 ° to 300 °, in the range of 135 ° to 300 °, in the range of 160 ° to 300 ° or in the range of 200 ° to 300 °.

When the hue angle h is within the above range, a cool tone can be observed from the decorative member. Cool tone means that the above numerical range is satisfied in the CIELch color space. The color corresponding to the warm tone is shown in fig. 32, and the color corresponding to the cool tone is shown in fig. 33.

In one embodiment of the present description, the light absorbing layer may have an L in CIE Lch color space of 0 to 100 or 30 to 100.

In one embodiment of the present description, c of the light absorbing layer in the CIE Lch color space may be 0 to 100, 1 to 80 or 1 to 60.

In the present specification, the CIE Lch color space is the CIE Lab color space, where the cylindrical coordinates c (chromaticity, relative saturation), L (distance from the L-axis), and h (hue angle, hue angle in the CIE Lab hue circle) are used without using a and b of cartesian coordinates.

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 400nm, and the refractive index 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 by sin θ a/sin θ b (θ a is an angle of light incident from the surface of the light absorbing layer, θ b is a refraction angle of light within the light absorbing layer).

In one embodiment of the present specification, the light absorbing layer preferably has a refractive index (n) of 0 to 8 in a wavelength range of 380nm to 780nm, and the refractive index may be 0 to 7, may be 0.01 to 3, and may be 2 to 2.5.

In one embodiment of the present specification, the extinction coefficient (k) of the light absorbing layer at a wavelength of 400nm is greater than 0 and 4 or less, and the extinction coefficient is 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- λ/4 π I (dI/dx) (here, the value of λ/4 π multiplied by dI/I, which is the rate of decrease in light intensity per unit length (dx), e.g., 1m, of the path in the light absorbing layer, where λ is the wavelength of the light).

In one embodiment of the present specification, the light absorbing layer has an extinction coefficient (k) of greater than 0 and equal to or less than 4 in a wavelength range of 380nm to 780nm, and the extinction coefficient is 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 in the above range at 400nm, or preferably in the entire visible wavelength region of 380nm to 780nm, and therefore, the function of the light absorbing layer can be exerted in the visible range.

The principle of color development of the light-absorbing layer having a specific extinction coefficient and refractive index as described above is different from the principle of color development of a decorative member developed by adding a dye to an existing substrate. For example, using a method of absorbing light by adding a dye to a resin, and using a material having an extinction coefficient as described above results in different light absorption spectra. When light is absorbed by adding a dye to a resin, the absorption wavelength band is fixed, and only a phenomenon in which the absorption amount changes according to the change in the coating thickness occurs. In addition, in order to obtain a target light absorption amount, a change in thickness of at least several micrometers or more is required to adjust the light absorption amount. On the other hand, in a material having an extinction coefficient, even when the thickness is changed in a specification of several nanometers to several tens of nanometers, the wavelength band of absorbed light is changed.

In addition, when a dye is added to an existing resin, only a specific color based on the dye is developed, and thus, various colors may not be displayed. On the other hand, the light absorbing layer of the present disclosure has an advantage of obtaining various colors through an interference phenomenon of light without adding a dye by using a specific material without using a resin.

According to the embodiment, light absorption occurs in an incident path and a reflection path of light in the light absorbing layer, and two reflected lights will interfere constructively or destructively by light reflected on each of the surface of the light absorbing layer and the interface of the light absorbing layer (301) and the light reflecting layer (201).

In this specification, light reflected on the surface of the light absorbing layer may be expressed as surface reflection light, and light reflected on the interface of the light absorbing layer and the light reflecting layer may be expressed as interface reflection light. A simulation of this operating principle is shown in fig. 4. Fig. 4 shows a structure in which the substrate (101) is disposed on the light reflection layer (201) side, however, the structure is not limited to this structure, and the substrate (101) may be disposed in other positions.

In one embodiment of the present specification, the light absorbing layer may be a single layer, or a plurality of layers of two or more layers.

In one embodiment of the present specification, the light absorbing layer may further include one, two or more selected from the group consisting of a metal, a metalloid, and an oxide, nitride, oxynitride and carbide of the metal or the metalloid. Oxides, nitrides, oxynitrides, or carbides of metals or metalloids may be formed under deposition conditions, etc., set by those skilled in the art. The light absorbing layer may further include the same metal, metalloid, alloy of two or more kinds, or oxynitride as the light reflecting layer.

In one embodiment of the present specification, the thickness (T) of the light absorbing layer₁) It may be determined according to the target color in the final structure, and for example, it may be 1nm or more and 300nm or less, 31nm or more and 60nm or less, 91nm or more and 120nm or less, or 151nm or more and 180nm or less.

In one embodiment of the present specification, 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, for example, color is easily obtained at a light reflectance of 50% or more. The light reflectivity can be measured using an ellipsometer.

In one embodiment of the present description, the light reflection layer may be a metal layer, a metal oxide layer, a metal nitride layer, a metal oxynitride layer, or an inorganic material layer. The light reflecting layer may be formed as a single layer or may be formed as a multilayer of two or more layers.

In one embodiment of the present description, the light reflecting layer may be a single layer or a plurality of layers including: one or more materials selected from 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 (Nd), iron (Fe), chromium (Cr), cobalt (Co), gold (Au), and silver (Ag); an oxide thereof; a nitride thereof; nitrogen oxides thereof; carbon and carbon composites.

In one embodiment of the present specification, the light reflection layer may include an alloy of two or more selected from the above materials, or an oxide, nitride, or oxynitride thereof.

In one embodiment of the present specification, the light reflective layer may be prepared by using an ink containing carbon or a carbon composite, thereby achieving a high resistance reflective layer. As the carbon or carbon composite, carbon black, CNT, or the like may be included.

In one embodiment of the present specification, the ink including carbon or a carbon composite may include the above-described materials or oxides, nitrides, or oxynitrides thereof, and for example, may include one, two or more oxides selected from 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 (Nd), iron (Fe), chromium (Cr), cobalt (Co), gold (Au), and silver (Ag). After printing the ink including carbon or carbon composite, a curing process may be further performed.

In one embodiment of the present specification, when the light reflection layer includes two or more materials, the two or more materials may be formed using one process, for example, a method of deposition or printing, however, a method of first forming a layer using one or more materials and then additionally forming a layer on the layer using one or more materials may be used. For example, the light reflective layer may be formed by depositing indium or tin to form a layer, then printing an ink containing carbon, and then curing the resultant. The ink may further comprise an oxide, such as titanium oxide or silicon oxide.

In one embodiment of the present specification, the thickness of the light reflection layer may be determined according to a target color in the final structure, and for example, may be 1nm or more and 100nm or less, 10nm or more and 90nm or less, or 30nm or more and 90nm or less.

(light-absorbing layer Structure)

In one embodiment of the present specification, when the light absorbing layer is formed, the light absorbing layer may have various shapes by adjusting deposition conditions or the like.

In one embodiment of the present description, the light absorbing layer includes two or more dots having different thicknesses.

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

In one embodiment of the present description, the light absorbing layer may include an inclined surface.

Examples of structures according to embodiments are shown in fig. 5 and 6. Fig. 5 and 6 show a structure (excluding the substrate) in which the light reflecting layer (201) and the light absorbing layer (301) are laminated. According to fig. 5 and 6, the light absorbing layer (301) has two or more dots having different thicknesses. According to fig. 5, the thicknesses of the points a and B are different in the light absorbing layer (301). According to fig. 6, the thicknesses of the C region and the D region are different in the light absorbing layer (301).

In one embodiment of the present specification, the light absorbing layer includes one or more regions in which the upper surface has an inclined surface having an inclination angle greater than 0 degree and equal to or less than 90 degrees, and the light absorbing layer includes one or more regions having a thickness different from that of any one of the regions having the inclined surface. As for the inclined surface, 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 may be defined as the inclined surface. For example, the inclination angle of the upper surface of the light absorbing layer of fig. 5 may be about 20 degrees.

The surface characteristics of the light reflecting layer such as the slope of the upper surface may be the same as the upper surface of the light absorbing layer. For example, by using a deposition method in forming the light absorbing layer, the upper surface of the light absorbing layer may have the same slope as the upper surface of the light reflecting layer. However, the slope of the upper surface of the light absorbing layer in fig. 5 is different from the slope of the upper surface of the light reflecting layer.

Fig. 7 shows a structure of a decoration member having a light absorbing layer whose upper surface has an inclined surface. The structure is a structure in which a substrate (101), a light reflecting layer (201), and a light absorbing layer (301) are laminated, and the thickness t1 of the E region and the thickness t2 of the F region are different in the light absorbing layer (301). Reference numeral 401 may be a color film.

Fig. 7 relates to a light absorbing layer having inclined surfaces facing each other, i.e., having a structure with a triangular cross section. In the structure having the pattern of the inclined surfaces facing each other as shown in fig. 7, the thickness of the light absorbing layer may be different in both surfaces having the triangular structure even when deposition is performed under the same condition. Therefore, the light absorbing layer having two or more regions with different thicknesses can be formed by only one process. As a result, the developed color can be different depending on the thickness of the light absorbing layer. Here, when the thickness of the light reflecting layer is equal to or greater than a certain thickness, the thickness of the light reflecting layer does not affect the color change.

Fig. 7 shows a structure in which the substrate (101) is disposed on the light reflection layer (201) side, but the structure is not limited thereto, and the substrate (101) may be disposed in other positions as well, as described above.

In addition, in fig. 7, the surface of the substrate (101) adjacent to the light reflection layer (201) is a flat surface, but the surface of the substrate (101) adjacent to the light reflection layer (201) may have a pattern having the same slope as the slope of the upper surface of the light reflection layer (201). This is shown in fig. 8. This may also cause a difference in the thickness of the light absorbing layer due to a difference in the slope of the pattern of the substrate. However, the present disclosure is not limited thereto, and the dichroism may be obtained by making the thickness of the light absorbing layer different on both sides of the pattern even when the substrate and the light absorbing layer are prepared to have different slopes using different deposition methods.

In one embodiment of the present description, the light absorbing layer includes more than one region having a gradually changing thickness. Fig. 9 shows a structure in which the thickness of the light absorbing layer (301) gradually changes.

In one embodiment of the present specification, the light absorbing layer includes one or more regions in which the upper surface has an inclined surface having an inclination angle greater than 0 degree and equal to or less than 90 degrees, and at least one or more regions having the inclined surface have a structure in which the thickness of the light absorbing layer gradually changes. Fig. 9 shows a structure of the light absorbing layer including a region having an inclined surface on the upper surface. In fig. 9, both the G region and the H region 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.

In this specification, the structure in which the thickness of the light absorbing layer is changed means that a cross section in a thickness direction of the light absorbing layer includes a point at which the light absorbing layer has the minimum thickness and a point at which the light absorbing layer has the maximum thickness, and the thickness of the light absorbing layer is increased in a direction in which the point at which the light absorbing layer has the minimum thickness is opposite to the point at which the light absorbing layer has the maximum thickness. Here, the point at which the light absorbing layer has the minimum thickness and the point at which the light absorbing layer has the maximum thickness may refer to any points on the interface between the light absorbing layer and the light reflecting layer.

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

(substrate)

In one embodiment of the present description, the decoration member includes a substrate disposed on one surface of the color developing layer.

In one embodiment of the present specification, the decoration member includes: a substrate (101), the substrate (101) being disposed on one or more surfaces of the light-reflecting layer (201) that face the light-absorbing layer (301); or on the surface of the light absorbing layer facing the light reflecting layer. For example, the substrate may be disposed on a surface of the light reflecting layer opposite to a surface facing the light absorbing layer (fig. 10 (a)); or on the surface of the light absorbing layer opposite to the surface facing the light reflecting layer ((b) of fig. 10).

In one embodiment of the present description, the substrate may include a plastic injection mold (glass substrate) for a cosmetic container. More specifically, the plastic injection-molded object may include one or more of 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 (SAN), but is not limited thereto.

The plastic injection-molded article may be a plate-type plastic injection-molded article having no curved line (specific pattern), or may be a plastic injection-molded article having a curved line (specific pattern).

The plastic injection molding can be prepared using a plastic molding method. The plastic molding method includes compression molding, injection molding, blow molding (air blow molding), thermoforming, hot melt molding, foam molding, roll molding, reinforced plastic molding, and the like. Compression molding is a molding method in which a material is put into a mold, the resultant is heated and pressure is applied thereto, and, as a molding method for the longest time, it can be mainly used for molding a thermosetting resin (e.g., a phenol resin). Injection molding is a molding method in which a plastic melt is extruded using a conveying device and filled into a mold through a nozzle, which can mold both thermoplastic resins and thermosetting resins, and is the most commonly used molding method. The resin used as the cosmetic shell is SAN. Blow molding is a method of molding a product while placing a plastic parison in the center of a mold and injecting air thereto, and the production speed of the product is very high as a molding method of producing a plastic bottle or a small container.

In one embodiment of the present specification, glass having a transmittance of 80% or more can be used as the glass substrate.

In one embodiment of the present description, the substrate thickness may be selected as desired, and for example, the substrate thickness may have a range of 50 μm to 200 μm.

In one embodiment of the present specification, the decoration member may be prepared using a step of forming a light reflection layer on a substrate and a light absorption layer on the light reflection layer. More specifically, in the decoration member, the light absorbing layer and the light reflecting layer may be sequentially formed on the substrate using a deposition process or the like, or the light reflecting layer and the light absorbing layer may be sequentially formed on the substrate using a deposition process or the like, but the method is not limited thereto.

(color film)

In one embodiment of the present description, the color developing layer further includes a color film.

In one embodiment of the present specification, the decoration member further includes a color film on a surface of the light absorption layer opposite to a surface facing the light reflection layer, between the light absorption layer and the light reflection layer, or on a surface of the light reflection layer opposite to a surface facing the light absorption layer. The colored film can also function as a substrate. For example, a substance which can be used as a substrate can be used as a color film by adding a dye or a pigment thereto.

In one embodiment of the present specification, the color film is not particularly limited as long as the color film has a color difference Δ Ε ab greater than 1 in the presence of the color film, as compared to when the color film is not provided, wherein the color difference Δ Ε ab is a distance in space of L a b in the color coordinates CIE L a b of the color-developing layer.

Colors may be represented by CIE L a b and color differences may be defined using distances in space (Δ E ab). Specifically, the color difference isAnd, at 0<ΔE*ab<1, the observer may not be able to recognize the color difference [ reference: machine Graphics and Vision 20(4) 383-]. Therefore, in the present specification, the color difference obtained by the addition of the color film may be defined as Δ E ab>1。

Fig. 11 shows a color-developing layer including a color film, fig. 11 (a) shows a structure in which a light-reflecting layer (201), a light-absorbing layer (301), and a color film (401) are sequentially stacked, fig. 11 (b) shows a structure in which a light-reflecting layer (201), a color film (401), and a light-absorbing layer (301) are sequentially stacked, and fig. 11 (c) shows a structure in which a color film (401), a light-reflecting layer (201), and a light-absorbing layer (301) are sequentially stacked.

In one embodiment of the present specification, when the substrate is disposed on a surface of the light reflection layer opposite to a surface facing the light absorption layer, and the color film is located on a surface of the light reflection layer opposite to the surface facing the light absorption layer, the color film may be disposed between the substrate and the light reflection layer or on a surface of the substrate opposite to the surface facing the light reflection layer. As another example, when the substrate is disposed on a surface of the light absorbing layer opposite to a surface facing the light reflecting layer and the color film is located on a surface of the light absorbing layer opposite to the surface facing the light reflecting layer, the color film may be disposed between the substrate and the light absorbing layer or on a surface of the substrate opposite to the surface facing the light absorbing layer.

In one embodiment of the present specification, a substrate is provided on a surface of the light reflection layer opposite to a surface facing the light absorption layer, and a color film is further provided. Fig. 12 (a) shows a structure in which a color film (401) is provided on a surface of the light absorbing layer (301) opposite to the light reflecting layer (201) side, fig. 12 (b) shows a structure in which the color film (401) is provided between the light absorbing layer (301) and the light reflecting layer (201), fig. 12 (c) shows a structure in which the color film (401) is provided between the light reflecting layer (201) and the substrate (101), and fig. 12 (d) shows a structure in which the color film (401) is provided on a surface of the substrate (101) opposite to the light reflecting layer (201) side. Fig. 12 (e) shows the following structure: the color films (401a, 401b, 401c, 401d) are respectively provided on the surface of the light absorbing layer (301) opposite to the light reflecting layer (201) side, between the light absorbing layer (301) and the light reflecting layer (201), between the light reflecting layer (201) and the substrate (101), and on the surface of the substrate (101) opposite to the light reflecting layer (201) side, however, the structure is not limited thereto, and one to three of the color films (401a, 401b, 401c, 401d) may not be included.

In one embodiment of the present specification, a substrate is provided on a surface of the light absorbing layer opposite to a surface facing the light reflecting layer, and is further provided with a color film. Fig. 13 (a) shows a structure in which a color film (401) is provided on a surface of the substrate (101) opposite to the light absorption layer (301) side, fig. 13 (b) shows a structure in which the color film (401) is provided between the substrate (101) and the light absorption layer (301), fig. 13 (c) shows a structure in which the color film (401) is provided between the light absorption layer (301) and the light reflection layer (201), and fig. 13 (d) shows a structure in which the color film (401) is provided on a surface of the light reflection layer (201) opposite to the light absorption layer (301) side. Fig. 13 (e) shows that the color films (401a, 401b, 401c, 401d) are respectively provided on the surface of the substrate (101) opposite to the light absorbing layer (301) side, between the substrate (101) and the light absorbing layer (301), between the light absorbing layer (301) and the light reflecting layer (201), and on the surface of the light reflecting layer (201) opposite to the light absorbing layer (301) side, however, the structure is not limited thereto, and one to three of the color films (401a, 401b, 401c, 401d) may not be included.

In the structure such as fig. 12 (b) and 13 (c), when the visible light transmittance of the color film is greater than 0%, the light reflection layer may reflect light incident through the color film, and thus, color may be obtained by laminating the light absorption layer and the light reflection layer.

In the structures such as fig. 12 (c), 12 (d), and 13 (d), the transmittance of a color developed from the color film of the light reflection layer (201) may be 1% or more, preferably 3% or more, and more preferably 5% or more, so that a change in color difference obtained by the addition of the color film can be recognized. This is due to the fact that: light transmitted in such a visible light transmittance range can be mixed with the color obtained by the color film.

In one embodiment of the present specification, the color film may be provided as one sheet, or a laminate of two or more sheets of the same or different types.

As the color film, a color film that can express a target color by combining with a color expressed from the above-described laminated structure of the light reflection layer and the light absorption layer can be used. For example, a color film that expresses color by dispersing one, two or more pigments and dyes in a matrix resin may be used. Such a color film can be formed by directly applying a composition for forming a color film on a position where the color film can be disposed, or the following method can be used: the color film is prepared by coating a composition for forming a color film on a separate substrate or using a known molding method such as casting or extrusion, and then the color film is disposed or attached at a position where the color film can be disposed. As the coating method, wet coating or dry coating may be used.

The pigment and dye that can be contained in the color film may be selected from those known in the art and capable of obtaining a target color from the final decorative member, and one, two or more kinds of pigments and dyes of red, yellow, purple, blue, pink, and the like may be used. Specifically, dyes such as a pyrene-based red dye, an anthraquinone-based red dye, a methane-based yellow dye, an anthraquinone-based violet dye, a phthalocyanine-based blue dye, a thioindigo-based pink dye, or an isoindigo-based pink dye may be used alone or in combination. Pigments such as carbon black, copper phthalocyanine (c.i. pigment blue 15:3), c.i. pigment red 112, pigment blue or isoindoline yellow may be used alone or in combination. As such a dye or pigment, a commercially available dye or pigment may be used, and for example, a material manufactured by Ciba ORACET or ChokwangPaint ltd. The type of dye or pigment and the color thereof are for illustrative purposes only, and various known dyes or pigments may be used, and various colors may be obtained thereby.

As the matrix resin contained in the color film, materials known as materials of a transparent film, a primer layer, an adhesive layer, or a coating layer can be used, and the matrix resin is not particularly limited to these materials. For example, various materials such as an acrylic-based resin, a polyethylene terephthalate-based resin, a polyurethane-based resin, a linear olefin-based resin, a cyclic olefin-based resin, an epoxy-based resin, or a triacetyl cellulose-based resin may be selected, and copolymers or mixtures of the above materials may also be used.

When the color film is provided closer to the position where the decorative member is observed than the light-reflecting layer or the light-absorbing layer as in the structures of (a) and (b) of fig. 12 and (a), (b) and (c) of fig. 13, for example, the light transmittance of the color displayed by the color film from the light-reflecting layer, the light-absorbing layer or the laminated structure of the light-reflecting layer and the light-absorbing layer may be 1% or more, preferably 3% or more, more preferably 5% or more. As a result, the target color can be obtained by combining the color developed from the color film and the color developed from the light reflecting layer, the light absorbing layer, or the laminated structure thereof.

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

(Pattern layer)

In one embodiment of the present description, the color developing layer or the substrate may include a pattern layer.

In one embodiment of the present description, the substrate includes a pattern layer, and the pattern layer is disposed adjacent to the color developing layer.

In the present specification, the pattern layer disposed adjacent to the color developing layer may refer to a pattern layer directly contacting the color developing layer. For example, the pattern layer may be in direct contact with the light reflective layer of the color developing layer, or the pattern layer may be in direct contact with the light absorbing layer of the color developing layer.

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

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

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

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

In the present specification, "cross section" refers to a surface when a convex or concave portion is cut in either direction. For example, the cross section may refer to a surface when the convex or concave portion is cut in a direction parallel to the ground surface or a direction perpendicular to the ground surface when the decoration member is placed on the ground surface. In the convex-shaped or concave-shaped surface of the pattern layer of the decoration member according to the embodiment, at least one of cross sections in a direction perpendicular to the ground surface has an asymmetric structure.

In the present specification, the "cross section of an asymmetric structure" refers to a structure in which a figure formed by the boundaries of the cross section does not have line symmetry or point symmetry. The line symmetry is a characteristic of overlapping when a specific pattern is mirrored around a straight line. The point symmetry refers to a symmetric property that a specific figure has a complete overlap with an original figure when it is rotated 180 degrees based on one point. Here, the boundary of the cross section of the asymmetric structure may be a straight line, a curved line, or a combination thereof.

In the present specification, "a convex shape" may include one or more "convex unit shapes", and "a concave shape" may include one or more "concave unit shapes". The convex unit shape or the concave unit shape refers to a shape including two inclined sides (a first inclined side and a second inclined side), not a shape including three or more inclined sides. When referring to fig. 21, the convex shape (P1) of the circle C1 is one convex unit shape including a first inclined side and a second inclined side. However, the convex shape included in the circle C2 includes two convex unit shapes. The first oblique sides may each be defined as a left oblique side of the convex shape or the concave shape, and the second oblique sides may each be directed to a right oblique side of the convex shape or the concave shape.

As described above, the decoration member may exhibit dichroism by the convex or concave portion having the cross section of the asymmetric structure included in the surface of the pattern layer. Dichroism means that different colors are observed depending on the viewing angle. Colors may be represented by CIE L a b, and color differences may be defined using distances in space (Δ E ab). Specifically, the color difference is

And is at 0<ΔE*ab<1, the observer may not be able to recognize the color difference [ reference: pine Graphics and Vision 20(4) 383-]. Thus, in the present specification, dichroism may be represented by Δ Ε ab>1 is defined as follows.

In one embodiment of the present description, the color-developing layer has a dichroism of Δ Ε ab > 1. In particular, the color difference Δ Ε ab may be greater than 1, wherein the color difference Δ Ε ab is the distance in space of L × a × b in the color coordinates CIE L × a × b of the color rendering layer.

In one embodiment of the present description, the trim member has a dichroism of Δ Ε ab > 1. In particular, the color difference Δ Ε ab may be greater than 1, wherein the color difference Δ Ε ab is the distance in space of L ×. a × b in the color coordinates CIE L ×. a × b of the entire decorative member.

Fig. 14 illustrates a decorative member (substrate and protective layer not shown) including a pattern layer according to one embodiment of the present description. The pattern layer surface may have the following shape: second protrusions (P2) having a height smaller than the protrusions are provided between the protrusions (P1). Hereinafter, the convex portion described before the second convex portion may be referred to as a first convex portion.

Fig. 15 illustrates a decorative member (color developing layer not shown) including a pattern layer according to one embodiment of the present description. The pattern layer surface may have a shape further including a concave portion (P3) having a smaller height than the convex portion on the tip portion (tip portion) of the convex portion (P1). Such a decoration member can exhibit an effect of slightly changing the color of an image according to the viewing angle.

In one embodiment of the present specification, the pattern layer includes a convex shape or a concave shape, and each shape may be arranged in an inverted phase structure.

FIG. 16 illustrates a trim member including a pattern layer according to one embodiment of the present description. As shown in (a) of fig. 16, the pattern layer surface may have a shape in which a plurality of protrusions are arranged in a 180-degree inverted structure. Specifically, the pattern layer surface may include a first region (C1) in which the second inclined surface has a larger inclination angle than the first inclined surface, and a second region (C2) in which the second inclined surface has a larger inclination angle than the first inclined surface. In one example, the convex portion included in the first region may be referred to as a first convex portion (P1), and the convex portion included in the second region may be referred to as a fourth convex portion (P4). The description provided in the convex portion (P1) may be used in the same manner with respect to the height, width, inclination angle, and angle formed by the first inclined face and the second inclined face of the first convex portion (P1) and the fourth convex portion (P4). As shown in fig. 16 (b), it may be configured such that any one of the first area and the second area corresponds to an image or a logo, and the other area corresponds to a background portion. Such a decoration member may exhibit an effect that the color of an image or a logo slightly changes according to the viewing angle. In addition, the decorative effect of the colors of the image or logo portion and the background portion appears to be switched depending on the observation direction.

In one embodiment of the present description, the first region and the second region may each include a plurality of protrusions. The widths of the first and second regions and the number of convex portions may be appropriately controlled according to the size of the target image or mark.

In the present specification, the inclination angle (a2, a3) of the protrusion (P1) may refer to an angle formed between the inclination surface (S1, S2) of the protrusion (P1) and a horizontal plane of the pattern layer. Unless otherwise specifically stated in the specification, the first inclined surface may be defined as a left inclined surface of the convex portion and the second inclined surface may refer to a right inclined surface of the convex portion in the drawings.

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

In one embodiment of the present description, an angle (a1) formed by the first inclined surface (S1) and the second inclined surface (S2) may be in 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 refer to an angle of a vertex formed by the first inclined surface and the second inclined surface. When the first inclined surface and the second inclined surface do not form a vertex with each other, the angle may refer to an angle of the vertex in a state where the vertex is formed by virtually extending the first inclined surface and the second inclined surface.

In one embodiment of the present description, a difference between an inclination angle (a2) of the first inclined surface and an inclination angle (a3) of the second inclined surface of the protrusion (P1) may be in a range of 30 to 70 degrees. For example, the difference between the inclination angle (a2) of the first inclined surface and the inclination angle (a3) of the second inclined surface may be 30 degrees or more, 35 degrees or more, 40 degrees or more, or 45 degrees or more, and may be 70 degrees or less, 65 degrees or less, 60 degrees or less, or 55 degrees or less. In the case where the difference in inclination angle between the first inclined surface and the second inclined surface is within the above-described range, it may be advantageous in obtaining the direction-dependent color expression. In other words, dichroism occurs more remarkably.

In one embodiment of the present description, the convex portion (P1) may have a height (H1) of 5 μm to 30 μm. In the case where the height of the convex portion is within the above range, it may be advantageous in terms of production processes. In the present specification, the height of the convex portion may refer to the shortest distance between the highest portion and the lowest portion of the convex portion based on the horizontal plane of the pattern layer. With regard to the description relating to the height of the convex portion, the same numerical range can also be used in the depth of the concave portion described above.

In one embodiment of the present description, the convex portion (P1) may have a width (W1) of 10 μm to 90 μm. In the case where the width of the convex portion is within the above range, it may be advantageous in terms of processes of processing and forming a pattern. For example, the width of the projection (P1) may be 10 μm or more, 15 μm or more, 20 μm or more, or 25 μm or more, and may be 90 μm or less, 80 μm or less, 70 μm or less, 60 μm or less, 50 μm or less, 40 μm or less, or 35 μm or less. The description about the width can be used in the above-described concave portion as well as the convex portion.

In one embodiment of the present specification, the distance between the convex portions (P1) may be 0 μm to 20 μm. In the present specification, in two adjacent convex portions, the distance between the convex portions may refer to the shortest distance between a point at which one convex portion ends and a point at which the other convex portion starts. When the distance between the convex portions is appropriately maintained, a phenomenon that the reflection area appears dark due to the shadow when a relatively bright color is to be obtained when the decorative member is viewed from the inclined surface side of the convex portions having a larger inclination angle is improved. Between the convex portions, there may be second convex portions having a smaller height than the convex portions, as described later. The description about the distance can be used in the above-described concave portion as well as the convex portion.

In one embodiment of the present description, the height (H2) of the second protrusion (P2) may be in a range of 1/5 to 1/4 of the height (H1) of the first protrusion (P1). For example, the height difference (H1-H2) between the first convex portion and the second convex portion may be 10 μm to 30 μm. The width (W2) of the second convex portion may be 1 μm to 10 μm. Specifically, the width (W2) of the second convex portion may be 1 μm or more, 2 μm or more, 3 μm or more, 4 μm or more, or 4.5 μm or more, and may be 10 μm or less, 9 μm or less, 8 μm or less, 7 μm or less, 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, S4) having different inclination angles. An angle (a4) formed by the two inclined surfaces of the second protrusion may be 20 to 100 degrees. Specifically, 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. The difference in inclination angle between the two inclined surfaces of the second protrusion (a 6-a 5) may be 0 to 60 degrees. The inclination angle difference (a 6-a 5) may be 0 degree 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. The second convex portion having a size within the above range may be advantageous in forming a bright color by increasing inflow of light from the side surface whose inclined surface angle is large.

In one embodiment of the present description, the height (H3) of the recess (P3) may be 3 μm to 15 μm. Specifically, the height (H3) of the recess (P3) may be 3 μm or more, and may be 15 μm or less, 10 μm or less, or 5 μm or less. The recess may have two inclined surfaces (S5, S6) having different inclination angles. An angle (a7) formed by the two inclined surfaces of the recess may be 20 to 100 degrees. Specifically, 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. The difference in inclination angle between the two inclined surfaces of the recess (a 9-a 8) may be 0 to 60 degrees. The inclination angle difference (a 9-a 8) may be 0 degree 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. The concave portion having a size within the above range may be advantageous in increasing the color sensation on the inclined surface.

In one embodiment of the present specification, the pattern layer includes a convex shape whose cross section includes a first inclined side and a second inclined side, and the shapes of the first inclined side and the second inclined side are the same as or different from each other, and are respectively a linear shape or a curved shape.

FIG. 17 illustrates a trim member including a pattern layer according to one embodiment of the present description. The cross section of the pattern layer has a convex shape, and the cross section of the convex shape includes a first region (D1) having a first inclined side and a second region (D2) having a second inclined side. The first and second inclined sides have a linear shape. The angle (c3) formed by the first and second angled edges may be 75 to 105 degrees, or 80 to 100 degrees. The angle (c1) formed by the first angled edge and the ground is different from the angle (c2) formed by the second angled 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.

FIG. 18 illustrates a trim member including a pattern layer according to one embodiment of the present description. The cross section of the pattern layer includes a convex shape, and the cross section of the convex shape includes a first region (E1) having a first inclined side and a second region (E2) having a second inclined side. Any one or more of the first and second slanted sides may have a curved shape. For example, the first and second beveled edges may each have a curvilinear shape, or the first beveled edge may have a linear shape and the second beveled edge may have a curvilinear shape. When the first inclined side has a linear shape and the second inclined side has a curved shape, the angle c1 may be greater than the angle c 2. Fig. 18 shows a case where the first inclined side has a linear shape and the second inclined side has a curved shape. The angle formed by the inclined edge having the curved shape and the ground may be calculated from an angle formed by a straight line and the ground when the arbitrary straight line is drawn from a point where the inclined edge contacts the ground to a point where the first inclined edge and the second inclined edge are adjacent. The curved second inclined side may have a different curvature according to the pattern layer height, and the curve may have a radius of curvature. The radius of curvature may be 10 times or less the width (E1+ E2) of the convex shape. Fig. 18 (a) shows that the curvature radius of the curve is twice the width of the convex shape, and fig. 18 (b) shows that the curvature radius of the curve is the same as the width of the convex shape. The ratio of the portion having curvature (E2) to the width of the convex portion (E1+ E2) may be 90% or less. Fig. 18 (a) and (b) show that the ratio of the portion having curvature (E2) to the width of the convex portion (E1+ E2) is 60%.

In one embodiment of the present specification, the cross section of the convex shape may have a polygonal shape of a triangle or a quadrangle.

FIG. 19 illustrates a trim member including a pattern layer according to one embodiment of the present description. The cross section of the pattern layer has a convex shape, and the cross section of the convex shape may have a quadrangular shape. The quadrangular shape may be a general quadrangular shape, and is not particularly limited as long as the inclination angle of each inclined side is different. The quadrangular shape may be a shape left after partially cutting the triangle. For example, a trapezoid, i.e., a quadrangle in which a pair of opposite sides are parallel or a quadrangle in which a pair of opposite sides are not parallel to each other may be included. The cross section of the convex shape includes a first region (F1) having a first inclined side, a second region (F2) having a second inclined side, and a third region (F3) having a third inclined side. The third oblique edge may be parallel to the ground or may not be parallel to the ground. For example, when the quadrilateral shape is a trapezoid, the third inclined side is parallel to the ground. Any one or more of the first to third inclined sides may have a curved shape, and the description of the curved shape is the same as that described above. The combined length of F1+ F2+ F3 may be defined as the width of the lobe shape, and the description of the width is the same as that provided above.

In one embodiment of the present specification, the pattern layer includes two or more convex shapes, and may further include a flat portion in a part or all between each convex shape.

Fig. 20 illustrates a trim member including a pattern layer according to one embodiment of the present description. A flat portion may be included between each convex portion of the pattern layer. The flat portion refers to a region where no convex portion exists. The description of the remaining constituent elements (D1, D2, c1, c2, c3, first inclined edge, and second inclined edge) is the same as the description provided above, except that the pattern layer further includes a flat portion. On the other hand, the cumulative length of D1+ D2+ G1 is defined as the pitch of the pattern, which is different from the width of the pattern.

In one embodiment of the present specification, the convex-shaped or concave-shaped surface includes two or more convex shapes or concave shapes. The dichroism can be further increased by the surface having two or more convex or concave shapes as described above. Here, two or more convex shapes or concave shapes may have a form repeating the same shape, but may include shapes different from each other.

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

In one embodiment of the present specification, in the shape of the convex or concave portion, at least one cross section includes a first inclined side and a second inclined side having different inclination angles.

In this specification, unless otherwise specified, "side" may be a straight line, but is not limited thereto, and a part or all of the side may be a curved line. For example, the edge may include a portion of an arc of a circle or an ellipse in a configuration, a wave configuration, or a zigzag configuration.

In this specification, when the edge includes a part of an arc of a circle or an ellipse, the circle or the ellipse may have a radius of curvature. The radius of curvature may be defined by the radius of the arc when converting the very short portion of the curve to an arc.

In this specification, unless otherwise specified, "inclined edge" means an edge that forms an angle of more than 0 degree and 90 degrees or less with respect to the ground when the decoration member is placed on the ground. Here, when the side is a straight line, an angle formed by the straight line and the ground may be measured. When the edge comprises a curved line, the angle formed by the ground surface and a straight line connecting a point of the edge closest to the ground surface and a point of the edge furthest from the ground surface when the trim member is placed on the ground surface can be measured.

In this specification, unless otherwise specified, the inclination angle is an angle formed by the ground and the surface or edge on which the pattern layer is formed when the decoration member is placed on the ground, and is greater than 0 degree and 90 degrees or less. Alternatively, the inclination angle may refer to an angle formed by the ground and a line segment (a '-b') formed when a point (a ') at which the surface or side on which the pattern layer is to be formed is adjacent to the ground and a point (b') at which the surface or side on which the pattern layer is formed is farthest from the ground.

In this specification, unless otherwise specified, curvature refers to the degree of change in the slope of a tangent line at successive points of an edge or surface. The curvature becomes higher as the change in the slope of the tangent at successive points of the edge or surface becomes larger.

In the present specification, the convex portion may be a convex portion unit shape, and the concave portion may be a concave portion unit shape. The convex unit shape or the concave unit shape refers to a shape including two inclined sides (a first inclined side and a second inclined side), not a shape including three or more inclined sides. When referring to fig. 21, the convex portion (P1) of the circle C1 is one convex unit shape including a first inclined side and a second inclined side. However, the shape included in the circle C2 includes two convex unit shapes. The first inclined edge may be defined as a left inclined edge of the convex or concave portion, and the second inclined edge may be directed to a right inclined edge of the convex or concave portion.

In one embodiment of the present description, an angle (a1) formed by the first and second oblique edges may be in 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 refer to an angle of a vertex formed by the first and second oblique edges. When the first oblique side and the second oblique side do not form a vertex with each other, the angle may refer to an angle of the vertex in a state where the vertex is formed by virtually extending the first oblique side and the second oblique side.

In one embodiment of the present description, a difference between an inclination angle (a2) of the first inclined side and an inclination angle (a3) of the second inclined side of the protrusion (P1) may be in a range of 30 to 70 degrees. For example, the difference between the inclination angle (a2) of the first inclined side and the inclination angle (a3) of the second inclined side may be 30 degrees or more, 35 degrees or more, 40 degrees or more, or 45 degrees or more, and may be 70 degrees or less, 65 degrees or less, 60 degrees or less, or 55 degrees or less. In the case where the difference in the inclination angle between the first inclined side and the second inclined side is within the above-described range, it may be advantageous in terms of obtaining the direction-dependent color representation.

FIG. 22 illustrates a pattern layer of a trim member and a method of making the same according to one embodiment of the present description. The cross section of the pattern layer has a convex shape, and the cross section of the convex shape may have a shape in which a specific region of the triangle of ABO1 is removed. The method of determining the removed specific region is as follows. The details of the inclination angles c1 and c2 are the same as the description provided above.

1) An arbitrary point P1 on the AO1 segment is set which divides the AO1 segment at a ratio of L1: L2.

2) An arbitrary point P2 on the BO1 segment is set which divides the BO1 segment at a ratio of m1: m 2.

3) An arbitrary point O2 on the AB segment is set at which the AB segment is divided at a ratio of n1: n 2.

4) An arbitrary point P3 on the O1O2 segment is set which divides the O2O1 segment at the ratio of O1: O2.

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

5) The area formed by the P1O1P2P3 polygon is removed.

6) A shape formed by an ABP2P3P1 polygon was used as the cross section of the convex portion.

The pattern layer can be changed into various shapes by adjusting the ratios of L1: L2, m1: m2, n1: n2, and o1: o 2. For example, when L1 and m1 are increased, the height of the pattern may be increased, and when o1 is increased, the height of the concave portion formed on the convex portion may be decreased, and by adjusting the proportion of n1, the position of the lowest point of the concave portion formed on the convex portion may be adjusted to be closer to any one of the inclined sides of the convex portion.

Fig. 23 illustrates a pattern layer prepared using the method of preparing a pattern layer of a decoration member according to fig. 22. When the ratios of L1: L2, m1: m2 and o1: o2 are all the same, the cross-sectional shape may be a trapezoidal shape. The height (ha, hb) of the trapezoid can be varied by adjusting the ratio of L1: L2. For example, fig. 23 (a) shows a pattern layer prepared when the ratio of L1: L2 is 1:1, and fig. 23 (b) shows a pattern layer prepared when the ratio of L1: L2 is 2: 1.

In one embodiment of the present specification, the convex shape or the concave shape of the pattern layer surface may be a tapered convex protruding from the surface of the pattern layer or a tapered concave recessed into the surface of the pattern layer.

In one embodiment of the present description, the tapered shape includes a shape of a cone, an elliptical cone, or a polygonal pyramid. Here, the shape of the bottom surface of the polygonal pyramid includes a triangle, a quadrangle, a star having five or more protruding points, and the like. According to one embodiment, when the pattern layer surface has a tapered convex shape when the decoration member is placed on the ground, at least one of cross sections of the convex shape perpendicular to the ground may have a triangular shape. According to another embodiment, when the pattern layer surface has a tapered concave shape when the decoration member is placed on the ground, at least one of cross sections of the convex shape perpendicular to the ground may have an inverted triangular shape.

In one embodiment of the present description, the tapered convex or tapered concave shape may have a cross section of at least one asymmetric structure. For example, when the tapered convex portion or concave portion is viewed from the surface side of the convex portion shape or concave portion shape, when the same shape of two or less is provided when rotated by 360 degrees based on the apex of the taper, it is advantageous to develop dichroism. Fig. 24 shows a tapered convex portion shape as viewed from the surface side of the convex portion shape, and fig. 24 (a) each shows a tapered shape of a symmetric structure, and fig. 24 (b) shows a tapered shape of an asymmetric structure.

When the decoration member is placed on the ground, the cone shape of the symmetrical structure has a structure in which a cross section in a direction parallel to the ground (hereinafter, referred to as a horizontal cross section) is a circle or a regular polygon having the same side length, and the apex of the cone exists on a line perpendicular to a cross section of the center of gravity of the horizontal cross section with respect to the ground. However, the tapered shape having a cross section of an asymmetric structure has a structure in which the position of the apex of the cone exists on a vertical line which is not a point of the center of gravity of the horizontal cross section of the cone when viewed from the surface side of the tapered convex or concave portion, or a structure in which the horizontal cross section of the cone is a polygon or an ellipse of an asymmetric structure. When the horizontal cross section of the cone is a polygon of an asymmetric structure, at least one of the sides and corners of the polygon may be designed differently from the rest.

For example, as shown in FIG. 25, the location of the apex of the cone may be altered. Specifically, as shown in the first diagram of fig. 25, when the apex of the cone is designed to be located on the vertical line of the center of gravity (O1) of the horizontal cross section of the cone with respect to the ground when viewed from the surface side of the conical convex portion shape, four identical structures (four-fold symmetry) can be obtained when rotated 360 degrees based on the apex of the cone. However, by designing the apex of the cone at a position (O2) other than the center of gravity (O1) of the horizontal cross-section with respect to the ground, the symmetrical structure is broken. When the length of one side of the horizontal cross section with respect to the ground is set to x, the moving distance of the apex of the cone is set to a and b, the height of the tapered shape, that is, the length of the line connecting the apex of the cone (O1 or O2) perpendicularly to the cross section parallel to the ground is set to h, and the angle formed by the horizontal cross section and the side surface of the cone is set to θ n, the cosine values of surface 1, surface 2, surface 3, and surface 4 of fig. 25 can be obtained as follows.

Here, θ 1 and θ 2 are the same, and thus no dichroism exists. However, θ 3 and θ 4 are different, and |. θ 3- θ 4 | represent a color difference (Δ E |) between two colors, and thus dichroism can be obtained. Here, - [ theta ] 3-theta 4 | is > 0. As described above, the degree to which the symmetric structure is broken, i.e., the asymmetry, can be quantitatively expressed using the angle formed by the horizontal cross section with respect to the ground and the side surface of the cone, and the value representing such asymmetry is proportional to the color difference of the dichroism.

Fig. 26 shows a surface having a convex part shape whose highest point is a linear shape, wherein, and (a) of fig. 26 shows a pattern having a convex part which does not exhibit dichroism, and (b) of fig. 26 shows a pattern having a convex part which exhibits dichroism. The X-X 'cross section of fig. 26 (a) is an isosceles triangle or an equilateral triangle, and the Y-Y' cross section of fig. 26 (b) is a triangle having different side lengths.

In one embodiment of the present specification, the pattern layer has a surface in a convex shape whose highest point has a line shape or a concave shape whose lowest point has a line shape. The linear shape may be a linear shape or a curved shape, and may include both a curved and a linear, or a zigzag shape. Which is shown in fig. 27 to 29. When the surface of the convex part shape having the linear shape at the highest point or the concave part shape having the linear shape at the lowest point is viewed from the surface side of the convex part shape or the concave part shape, it is advantageous to develop dichroism in the case of having only one identical shape when rotated by 360 degrees based on the center of gravity of the horizontal cross section of the convex part or the concave part with respect to the ground.

In one embodiment of the present specification, the pattern layer has a surface in a convex shape or a concave shape in which a tapered tip portion is cut. Fig. 30 shows an image of an inverted trapezoidal recess in which a cross section perpendicular to the ground surface is asymmetric when the garnish member is placed on the ground surface. The asymmetric cross-section may have a trapezoidal or inverted trapezoidal shape. Dichroism can also be manifested in this case by the cross-section of the asymmetrical structure.

In addition to the above-described structure, various convex or concave surface shapes as shown in fig. 31 can be obtained.

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

In one embodiment of the present description, the pattern layer includes a pattern of a symmetrical structure. As the symmetrical structure, a prism structure, a lenticular lens structure, or the like is included.

In one embodiment of the present specification, the decoration member includes a pattern layer including a convex shape or a concave shape having a cross section of an asymmetric structure on a surface of the light absorption layer facing the light reflection layer, between the light absorption layer and the light reflection layer, or on a surface of the light reflection layer facing the light absorption layer.

In one embodiment of the present specification, the pattern layer has a flat portion on a surface opposite to a surface where the convex shape or the concave shape is formed, and the flat portion may be formed on the substrate. As the substrate layer, a plastic substrate may be used. As the plastic substrate, triacetyl cellulose (TAC); cycloalkane Copolymers (COP), such as norbornene derivatives; poly (methyl methacrylate) (PMMA); polycarbonate (PC); polyethylene (PE); polypropylene (PP); polyvinyl alcohol (PVA); diacetylcellulose (DAC); polyacrylates (Pac); polyethersulfone (PES); polyetheretherketone (PEEK); polyphenylsulfone (PPS), Polyetherimide (PEI); polyethylene naphthalate (PEN); polyethylene terephthalate (PET); polyimide (PI); polysulfone (PSF); polyarylate (PAR), or amorphous fluororesin, however, the plastic substrate is not limited thereto.

In one embodiment of the present description, the pattern layer may include a thermosetting resin or an ultraviolet curable resin. As the curable resin, a photocurable resin or a thermosetting resin can be used. As the photocurable resin, an ultraviolet curable resin can be used. Examples of the thermosetting resin may include silicone resin, furan resin, urethane resin, epoxy resin, amino resin, phenol resin, urea resin, polyester resin, melamine resin, and the like, but are not limited thereto. As the ultraviolet curable resin, acrylic polymers such as polyester acrylate polymers, polystyrene acrylate polymers, epoxy acrylate polymers, urethane acrylate polymers or polybutadiene acrylate polymers, silicone acrylate polymers, alkyl acrylate polymers, and the like can be representatively used, but the ultraviolet curable resin is not limited thereto.

In one embodiment of the present specification, a color dye may be further included in the inside or at least one surface of the pattern layer. Including a color dye on at least one surface of the pattern layer may refer to, for example, the case where a color dye is included on the above-described substrate layer disposed on the flat side of the pattern layer.

In one embodiment of the present specification, as the chromatic dye, an anthraquinone-based dye, a phthalocyanine-based dye, a thioindigo-based dye, a perinone-based dye, an isoindigo-based dye, a methane-based dye, a monoazo-based dye, a 1:2 metal complex-based dye, and the like can be used.

In one embodiment of the present specification, when a color dye is included in the pattern layer, the dye may be added to the curable resin. When the color dye is further included at the bottom of the pattern layer, a method of coating a dye-containing layer on the top or bottom of the substrate layer may be used.

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

In one embodiment of the present description, the color developing layer may provide a metallic texture and depth of color when the decoration member is observed. The color developing layer allows an image of the decoration member to be seen in various colors according to a viewing angle. This is due to the fact that: the wavelength of light passing through the pattern layer and reflected on the surface of the inorganic material layer varies according to the wavelength of incident light.

The color developing layer may have the same convex or concave portions as the surface of the pattern layer described above. The color developing layer may have the same slope as the surface of the pattern layer described above.

In one embodiment of the present description, the decoration member includes a protective layer provided between the substrate and the color developing layer, on a surface of the color developing layer facing the substrate, or on a surface of the substrate facing the color developing layer.

In one embodiment of the present specification, the decoration member includes a protection layer disposed on any one or more of a surface of the light absorption layer opposite to a surface facing the light reflection layer, between the substrate and the pattern layer, between the pattern layer and the light reflection layer, between the light reflection layer and the light absorption layer, and between the light reflection layer and the light absorption layer. In other words, the protective layer functions to protect the decoration element by being disposed between layers of the decoration element or the outermost portion of the decoration element.

In the present specification, unless otherwise defined, "protective layer" means a layer capable of protecting other layers of the decorative member. For example, deterioration of the inorganic material layer under a moisture-resistant or heat-resistant environment can be prevented. Alternatively, scratches on the inorganic material layer or the pattern layer by external factors are effectively suppressed, so that the decoration member can effectively exhibit dichroism.

In this specification, unless otherwise defined, "inorganic material layer" refers to a light absorbing layer or a light reflecting layer.

In the present specification, examples of the structure of the decorative member including the protective layer are as follows.

For example, a structure of substrate/protective layer/pattern layer/light reflective layer/light absorbing layer/protective layer or substrate/protective layer/pattern layer/light absorbing layer/light reflective layer/protective layer may be included.

In one embodiment of the present description, the protective layer includes aluminum oxynitride. By making the protective layer include aluminum oxynitride (AlON), the function of the protective layer described later can be enhanced as compared to when the protective layer does not include aluminum oxynitride (AlON). In addition, when the ratio of each element of aluminum oxynitride is adjusted, the protective function can be further enhanced.

In one embodiment of the present specification, by further including a protective layer, the decorative member suppresses damage to the pattern layer and the organic material layer even when left unattended under a high-temperature and high-humidity environment, and therefore, can maintain an excellent decorative effect even under a severe environment.

The decoration device of the present specification may be used in a known object that requires the use of a decoration device. For example, the decoration member of the present specification can be used in portable electronic devices, electronic products, cosmetic containers, furniture, building materials, and the like without limitation.

The manner of using the decorative member in the portable electronic device, the electronic product, the cosmetic container, the furniture, the building material, and the like is not particularly limited, and a known method known in the art as a method of using a decorative film may be used. The decoration member may further include an adhesive layer according to necessity. In another embodiment, the decoration member may be used by being directly coated on the portable electronic device or the electronic product. In this case, a separate adhesive layer for attaching the decoration member to the portable electronic device or the electronic product may not be required. In another embodiment, the decorative member may be attached to the portable electronic device or the electronic product using an adhesive layer as a medium. As the adhesive layer, an optically transparent adhesive tape (OCA tape) or an adhesive resin can be used. As the OCA tape or the adhesive resin, an OCA tape or an adhesive resin known in the art may be used without limitation. A release layer (release liner) may be further provided to protect the adhesive layer, as necessary.

In one embodiment of the present specification, the light reflective layer and the light absorbing layer may be respectively formed on the substrate or on the pattern of the pattern layer of the substrate using a sputtering method, an evaporation method, a vapor deposition method, a Chemical Vapor Deposition (CVD) method, a wet coating method, or the like. In particular, the sputtering method has a straight progress (straight progress), and thus, the difference between the deposition thicknesses of the two inclined surfaces of the convex portion can be maximized by inclining the position of the target.

In one embodiment of the present specification, the light reflective layer and the light absorbing layer may be respectively formed using a reactive sputtering method, which is a method in which ions having energy (e.g., Ar +) apply an impact to a target material and the detached target material is deposited on a surface to be deposited, a reference pressure may be 1.0 × 10 herein^-5Under Torr, 6.0 × 10^-6Under torr, and preferably 3.0 × 10^-6And (5) supporting below.

In one embodiment of the present description, a reactive sputtering method may be performed in a chamber including a plasma gas and a reactive gas. The plasma gas may be argon (Ar). In addition, the reaction gas required for forming the inorganic material layer is oxygen (O)₂) And nitrogen (N)₂) Unlike and as a gas for providing oxygen atoms or nitrogen atoms, and plasma gas.

In one embodiment of the present description, the flow rate of the plasma gas can be greater than or equal to 10sccm and less than or equal to 300sccm, and preferably greater than or equal to 20sccm and less than or equal to 200 sccm. sccm represents standard cubic centimeters per minute.

In one embodiment of the present description, the process pressure (p1) in the chamber may be 1.0 mtorr to 10.0 mtorr, and preferably 1.5 mtorr to 10.0 mtorr. When the process pressure is higher than the above range during sputtering, the number of Ar particles present in the chamber increases, and particles emitted from the target collide with the Ar particles to lose energy, which may reduce the growth rate of the thin film. On the other hand, when the process pressure is maintained too low, the energy loss of the copper oxide particles caused by the Ar particles is reduced, but there are disadvantages as follows: the substrate may be damaged by particles having high energy or the quality of the protective layer may be degraded.

In one embodiment of the present description, the ratio of the reaction gas with respect to the plasma gas may be greater than or equal to 30% and less than or equal to 70%, preferably greater than or equal to 40% and less than or equal to 70%, more preferably50% or more and 70% or less. The ratio of the reaction gases may be by (Q)_{Reaction gas}/(Q_{Plasma process gas}) 100%) was calculated. Q_{Reaction gas}Is the flow rate of the reaction gas, Q, in the chamber_{Plasma process gas}May be the flow rate of the plasma process gas within the chamber. When the above numerical range is satisfied, the atomic ratio of the above copper oxide may be adjusted to a target range.

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

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

In one embodiment of the present description, the reactive sputtering method may have a deposition temperature of 20 ℃ or more and 300 ℃ or less. When deposited at a temperature lower than the above range, there are the following problems: the energy required for crystal growth is insufficient in the particles dropped from the target and reaching the substrate, and the crystallinity of the film growth is lowered, while at a temperature higher than the above range, the particles dropped from the target are evaporated or re-evaporated, causing a problem that the film growth rate is lowered.

Hereinafter, the present application will be specifically described with reference to examples, however, the scope of the present specification is not limited by the following examples.

< examples and comparative examples >

Comparative example 1

The prismatic pattern layers each having an inclination angle of 20 degrees/70 degrees were formed by coating an ultraviolet curable resin on a PET substrate. Thereafter, a color developing layer including a light absorbing layer and a light reflecting layer is formed on the pattern layer using a reactive sputtering method.

Specifically, a reactive sputtering method is used, and a copper target is used. The argon flow rate was adjusted to 35sccm, the oxygen flow rate was adjusted to 15sccm, the process pressure was maintained at 9 mTorr, and the power was maintained at 200W. Thereby, a light absorbing layer of 10nm having the composition of table 2 below was formed. Thereafter, In having a thickness of 70nm was deposited on the light absorbing layer using a sputtering method to form a light reflecting layer, and a final decoration member was prepared.

Comparative example 2

A decorative member was prepared in the same manner as in comparative example 1, except that the thickness of the light absorbing layer was adjusted to 20 nm.

Comparative example 3

A decorative member was prepared in the same manner as in comparative example 1, except that the thickness of the light absorbing layer was adjusted to 30 nm.