Asymmetric patterned reflective coating

Abstract

A coated article comprising: a substrate having a first side and a second side; and a patterned coating over at least a portion of the second side of the substrate. The patterned coating includes: a first dielectric layer over at least a portion of the second side of the substrate; an absorber layer over a first portion of the first dielectric layer and including a first reflective aesthetics, and absent over a second portion of the first dielectric layer and including a second reflective aesthetics; and a second dielectric layer over at least a portion of the absorber layer. A contrast between the first reflective aesthetics and the second reflective aesthetics forms a pattern. A contrast between the first reflective aesthetics and the second reflective aesthetics when the coated article is viewed from the first direction is greater than when the coated article is viewed from the second direction.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to U.S. Patent Application No. 18 / 329,661, filed on June 6, 2023, and claims the benefit of U.S. Provisional Patent Application No. 63 / 349,652, filed on June 7, 2022, the disclosures of which are incorporated herein by reference in their entireties. Technical Field

[0002] The present invention generally relates to reflective coatings and articles coated with reflective coatings. Background Art

[0003] Reflective coatings are known in the art of architectural transparencies. Various methods are known for imparting a pattern to a transparency or coating that is visible when the transparency is viewed. However, due to the light transmission of the transparency, the pattern is visible when viewed from two directions. This is disadvantageous for many transparency applications because it is only desired that the pattern be visible from one direction, while viewing through the transparency from a second direction be unobstructed. Summary of the invention

[0004] In one aspect of the present invention, a coated article includes: a substrate having a first side and a second side opposite the first side; and a patterned coating over at least a portion of the second side of the substrate, wherein the patterned coating includes: a first dielectric layer over at least a portion of the second side of the substrate; an absorbing layer over a first portion of the first dielectric layer and including a first reflective aesthetic, and not present over a second portion of the first dielectric layer and including a second reflective aesthetic; and a second dielectric layer over at least a portion of the absorbing layer; wherein a contrast between the first reflective aesthetic and the second reflective aesthetic forms a pattern; and wherein the contrast between the first reflective aesthetic and the second reflective aesthetic is greater when the coated article is viewed from the first direction than when the coated article is viewed from the second direction.

[0005] Various non-limiting examples or aspects of the present invention will now be described and illustrated in the following numbered clauses:

[0006] Item 1: A coated article comprising: a substrate having a first side and a second side opposite the first side; and a patterned coating over at least a portion of the second side of the substrate, wherein the patterned coating comprises: a first dielectric layer over at least a portion of the second side of the substrate; an absorbing layer over a first portion of the first dielectric layer and comprising a first reflective aesthetic, and not present over a second portion of the first dielectric layer and comprising a second reflective aesthetic; and a second dielectric layer over at least a portion of the absorbing layer; wherein a contrast between the first reflective aesthetic and the second reflective aesthetic forms a pattern; and wherein the contrast between the first reflective aesthetic and the second reflective aesthetic is greater when the coated article is viewed from a first direction than when the coated article is viewed from a second direction.

[0007] Clause 2: The coated article of clause 1, wherein the contrast between the first reflective aesthetic and the second reflective aesthetic is greater when the coated article is viewed from the second side than when the coated article is viewed from the first side.

[0008] Clause 3: The coated article of clause 1 or clause 2, wherein the ratio of the thickness of the second dielectric layer to the thickness of the first dielectric layer is in the range of 2:1 to 20:1.

[0009] Clause 4: The coated article of clause 3, wherein a ratio of a thickness of the second dielectric layer to a thickness of the first dielectric layer is in a range of 3:1 to 5:1.

[0010] Clause 5: The coated article of any of Clauses 1-4, wherein the second dielectric layer has a thickness in a range from 25 nm to 100 nm.

[0011] Clause 6: The coated article of any of Clauses 1-5, wherein the first dielectric layer has a thickness in a range of 2 nm to 20 nm.

[0012] Clause 7: The coated article of any of Clauses 1-6, wherein the absorber layer comprises nickel, chromium, iron, stainless steel, niobium, subcritical silver, or a combination thereof.

[0013] Clause 8: The coated article of any of Clauses 1-7, further comprising a functional coating over at least a portion of the substrate and over and / or under the patterned coating.

[0014] Clause 9: A coated article according to Clause 8, wherein the functional coating is a solar control coating.

[0015] Item 10: The coated article of any of Items 1-9, wherein the absorbing layer comprises a thickness in a range from greater than 0 nm to 5 nm.

[0016] Clause 11: The coated article of any of Clauses 1-10, wherein the absorbent layer comprises a gradient thickness.

[0017] Clause 12: The coated article of any of Clauses 1-11, wherein the substrate comprises glass.

[0018] Clause 13: A coated article according to any one of clauses 1 to 12, wherein the substrate comprises a plastic material.

[0019] Clause 14: The coated article according to any of clauses 1-13, wherein the coated article is a laminate.

[0020] Clause 15: The coated article of any of clauses 1-14, wherein the combined thickness of the first dielectric layer and the second dielectric layer is in the range of 40 nm to 60 nm.

[0021] Item 16: A coated article according to Item 8, wherein the functional coating comprises a continuous silver infrared reflecting layer.

[0022] Item 17: The coated article according to Item 8, wherein the functional coating comprises an indium tin oxide layer and / or a fluorine-doped tin oxide layer.

[0023] Clause 18: The coated article according to Clause 8, wherein the functional coating comprises a halogenated layer.

[0024] Clause 19: A coated article according to any of clauses 1-18, wherein the coated article is an architectural glazing.

[0025] Clause 20: The coated article of any of clauses 1-19, wherein the contrast between the first reflective aesthetic and the second reflective aesthetic is visible in reflection to a bird when viewed from a second side of the coated article.

[0026] Clause 21: A coated article according to any of clauses 1-20, wherein the first dielectric layer comprises a certain thickness such that the pattern is not visible in reflection when viewed from a first side of the coated article; and wherein the second dielectric layer comprises a certain thickness such that the pattern is visible in reflection when viewed from a second side of the coated article.

[0027] Clause 22: A coated article according to any one of clauses 1 to 21, wherein the ΔE of the reflectance between the first reflectance aesthetic and the second reflectance aesthetic when viewed from the first side CMC Less than 4.

[0028] Clause 23: A coated article according to any one of clauses 1 to 22, wherein the ΔE of the reflectance between the first reflectance aesthetic and the second reflectance aesthetic when viewed from the second side CMCGreater than 8. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be described with reference to the following drawings, wherein like reference numerals identify like parts throughout.

[0030] Figure 1 is a side view of an insulating glass unit (IGU) having a coating according to an aspect of the present invention;

[0031] Figure 2 is a side view of a coated article according to another aspect of the present invention;

[0032] Figure 3A is a side view of a coating according to one aspect of the present invention;

[0033] Figure 3B Is coated with Figure 3A A top view of a coated article having a coating of

[0034] Figure 3C Is coated with Figure 3A A bottom view of a coated article having a coating of

[0035] Figure 4A is a side view of a coating according to another aspect of the present invention;

[0036] Figure 4B Is coated with Figure 4A A top view of a coated article having a coating of

[0037] Figure 4C Is coated with Figure 4A A bottom view of a coated article having a coating of

[0038] Figure 5 is a side view of a coated article according to another aspect of the present invention;

[0039] Figure 6 is a side view of a coated article according to another aspect of the present invention; and

[0040] Figure 7 is a side view of a coated article according to another aspect of the present invention. DETAILED DESCRIPTION

[0041] As used herein, spatial or directional terms, such as "left", "right", "inside", "outside", "above", "below", etc., are related to the present invention as shown in the accompanying drawings. However, it should be understood that the present invention can take various alternative orientations, and therefore, these terms should not be considered limiting. In addition, as used herein, all numbers used in the specification and claims to represent dimensions, physical properties, processing parameters, ingredient amounts, reaction conditions, etc. should be understood as modified by the term "about" in any case. Therefore, unless otherwise indicated, the numerical values ​​listed in the following specification and claims can vary depending on the desired characteristics attempted to be obtained by the present invention. At least, and without intending to limit the application of the doctrine of equivalents to the scope of the claims, each numerical value should at least be interpreted in accordance with the numerical value of the reported significant figures and by applying ordinary rounding techniques. In addition, it should be understood that all ranges disclosed herein cover range starting values ​​and range ending values ​​and any and all sub-ranges contained therein. For example, the range of "1 to 10" should be considered to include any and all subranges between a minimum of 1 and a maximum of 10 (including the minimum and maximum values); that is, all subranges starting with a minimum of 1 or greater and ending with a maximum of 10 or less, such as 1 to 3.3, 4.7 to 7.5, 5.5 to 10, etc. In addition, as used herein, the term "formed above", "deposited above" or "provided above" means formed, deposited or provided on a surface, but not necessarily in contact with the surface. For example, a coating "formed above a substrate" does not exclude the presence of one or more other coatings or films of the same or different composition located between the formed coating and the substrate. The term "visible region", "visible light" or "visible spectrum" refers to electromagnetic radiation with a wavelength in the range of 380nm to 800nm. The term "infrared region", "infrared radiation" or "infrared spectrum" refers to electromagnetic radiation with a wavelength in the range of greater than 800nm ​​to 100,000nm. The term "ultraviolet region", "ultraviolet radiation" or "ultraviolet (UV) spectrum" refers to electromagnetic energy with a wavelength in the range of 300nm to less than 380nm. In addition, all documents mentioned herein (such as but not limited to issued patents and patent applications) should be deemed to be "incorporated by reference" in their entirety. As used herein, the term "film" refers to a coating area of ​​a desired or selected coating composition. A "layer" may include one or more "films", and a "coating" or "coating stack" may include one or more "layers". The term "asymmetric reflectivity" refers to the visible light reflection of the coating from one side is different from the visible light reflection of the coating from the opposite side. The term "critical thickness" refers to the following thickness: above this thickness, the coating material forms a continuous, uninterrupted layer, and below this thickness, the coating material forms discontinuous regions or islands of the coating material, rather than a continuous layer.The term "subcritical thickness" refers to a thickness below the critical thickness such that the coating material forms isolated, unconnected regions of the coating material. The term "islanded" means that the coating material is not a continuous layer, but rather the material is deposited to form isolated regions or islands.

[0042] For the following discussion, the present invention will be discussed with reference to the use with architectural transparency, such as but not limited to insulating glass units (IGU). As used herein, the term "architectural transparency" refers to any transparency located on a building, such as but not limited to windows and skylights. However, it should be understood that the present invention is not limited to use with such architectural transparency, but can be practiced with transparency in any desired field, such as but not limited to: laminated or non-laminated residential and / or commercial windows, insulating glass units, and / or transparent parts for land vehicles, aircraft, spacecraft, water and underwater vehicles, personal transparent parts such as glasses, mirrors (such as reciprocating mirrors and / or multi-function mirrors, etc.), displays, dynamic window glass, coatings involving functional patterning (such as antennas, etc.), windows patterned for sensor compatibility (such as infrared), novel products such as consumer products, and / or the like, etc. Therefore, it should be understood that the specific disclosed exemplary embodiments are given only to explain the general concept of the present invention, and the present invention is not limited to these specific exemplary embodiments. Additionally, while a typical "transparent member" may have sufficient visible light transmission so that materials can be viewed through the transparent member, in the practice of the present invention, the "transparent member" need not be transparent to visible light, but may be translucent or opaque.

[0043] Figure 1 1 shows a non-limiting transparent member 10 incorporating features of the present invention. The transparent member 10 can have any desired transmission and / or reflection of visible light, infrared radiation, or ultraviolet radiation. For example, the transparent member 10 can have any desired amount of visible light transmission, for example, greater than 0% up to 100%. In a non-limiting embodiment, the transparent member 10 can have different transmission and / or reflection of visible light, infrared radiation, or ultraviolet radiation, depending on which direction the transparent member 10 is viewed from.

[0044] Figure 1The transparent member 10 is in the form of a conventional insulating glass unit and includes a first ply 12 having a first major surface 14 (1st surface) and an opposite second major surface 16 (2nd surface). In the non-limiting embodiment shown, the first major surface 14 faces the exterior of the building, that is, the exterior major surface, and the second major surface 16 faces the interior of the building. The transparent member 10 also includes a second ply 18 having an exterior (first) major surface 20 (3rd surface) and an interior (second) major surface 22 (4th surface) and spaced apart from the first ply 12. This numbering of the ply surfaces is consistent with conventional practice in window arrangement technology. The first ply 12 and the second ply 18 can be connected together in any suitable manner, such as by adhesive bonding to a conventional spacing frame 24. A gap or chamber 26 is formed between the two plies 12, 18. The chamber 26 can be filled with a selected atmosphere, such as air, or a non-reactive gas (such as argon or krypton). The coating 100 (or any other coating described below) is formed over at least a portion of one of the plies 12, 18, such as, but not limited to, over at least a portion of the second surface 16 or over at least a portion of the third surface 20. However, the coating may also be on the first or fourth surface if desired. Examples of insulating glass units may be found, for example, in U.S. Patents 4,193,236; 4,464,874; 5,088,258; 5,106,663.

[0045] In the broad practice of the present invention, the plies 12, 18 of the transparent member 10 can have the same or different materials. The plies 12, 18 may include any desired material with any desired properties. For example, one or more of the plies 12, 18 may be transparent or translucent to visible light. "Transparent" refers to having a visible light transmission greater than 0% up to 100%. Alternatively, one or more of the plies 12, 18 may be translucent. "Translucent" refers to allowing electromagnetic energy (e.g., visible light) to pass through but diffusing the energy so that objects on the side opposite to the observer are not clearly visible. Examples of suitable materials include, but are not limited to, plastic substrates (e.g., acrylic polymers, such as polyacrylates; polyalkyl methacrylates, such as polymethyl methacrylate, polyethyl methacrylate, polypropyl methacrylate, etc.; polyurethanes; polycarbonates; polyalkyl terephthalates, such as polyethylene terephthalate (PET), polypropylene terephthalate, polybutylene terephthalate, etc.; polysiloxane-containing polymers; or copolymers of any monomers used to prepare these polymers, or any mixtures thereof); ceramic substrates; glass substrates; or mixtures or combinations of any of the above materials. For example, one or more of the plies 12, 18 may include conventional soda-lime silicate glass, borosilicate glass, or lead glass. The glass may be clear glass. "Clear glass" refers to glass that is untinted or colorless. Alternatively, the glass may be tinted glass or otherwise colored glass. The glass may be annealed or heat-treated glass. As used herein, the term "heat-treated" refers to tempering or at least partial tempering. The glass may be of any type, such as conventional float glass, and may have any composition having any optical properties, such as any values ​​of visible light transmission, ultraviolet light transmission, infrared light transmission, and / or total solar energy transmission. "Float glass" refers to glass formed by a conventional float process in which molten glass is deposited onto a molten metal bath and controllably cooled to form a float glass ribbon. Examples of float glass processes are disclosed in U.S. Pat. Nos. 4,466,562 and 4,671,155.

[0046] The first ply 12 and the second ply 18 may each be, for example, colorless float glass or may be tinted or colored glass, or one ply 12, 18 may be colorless glass and the other ply 12, 18 may be colored glass. Although not limiting the present invention, examples of glass suitable for the first ply 12 and / or the second ply 18 are described in U.S. Pat. Nos. 4,746,347, 4,792,536, 5,030,593, 5,030,594, 5,240,886, 5,385,872, and 5,393,593. The first ply 12 and the second ply 18 may have any desired dimensions, such as length, width, shape, or thickness. In an exemplary automotive transparency, the first ply and the second ply may each be 1 mm to 10 mm, such as 1 mm to 8 mm, such as 2 mm to 8 mm, such as 3 mm to 7 mm, such as 5 mm to 7 mm, such as 6 mm thick.

[0047] See also Figure 2 According to one limited embodiment, the coating 100 can include a patterned coating 120 over at least a portion of a major surface of the substrate 112 (eg, the second surface 116 of the first ply 12).

[0048] refer to Figure 3AIn one non-limiting embodiment, the patterned coating 120 includes a first dielectric layer 122a over at least a portion of a major surface of the substrate 112 (e.g., the second surface 116 of the first layer 12). The first dielectric layer 122a can be a single layer, or can include more than one film of an anti-reflective material and / or a dielectric material, such as, but not limited to, a metal oxide, an oxide of a metal alloy, a halide, a nitride, an oxynitride, or a mixture thereof. The first dielectric layer 122a can be transparent to visible light. Examples of suitable metal oxides or metal nitrides for the first dielectric layer 122a or any film thereof include oxides, nitrides, and / or oxynitrides of titanium, hafnium, zirconium, niobium, zinc, bismuth, lead, indium, tin, aluminum, silicon, and mixtures thereof. The metal oxide may have a small amount of other materials, such as manganese in bismuth oxide, tin in indium oxide, etc. In addition, oxides or nitrides of metal alloys or metal mixtures may be used, such as oxides containing zinc and tin (e.g., zinc stannate, as defined below), oxides of indium tin alloys, silicon nitrides, silicon aluminum nitrides, or aluminum nitrides. In addition, doped metal oxides may be used, such as antimony or indium tin oxides or nickel or boron doped silicon oxides. The first dielectric layer 122a may be a substantially single-phase film, such as a metal alloy oxide film (e.g., zinc stannate), or may be a mixture of phases consisting of zinc and tin oxides, or may be composed of multiple films. For example, the first dielectric layer 122a may include silicon oxide, silicon nitride, silicon aluminum nitride, zinc / tin alloy oxide, zinc oxide, tin oxide, and / or titanium dioxide.

[0049] In one non-limiting embodiment, the first dielectric layer 122a may include a zinc / tin alloy oxide. "Zinc / tin alloy oxide" refers to a mixture of true alloys and oxides. The zinc / tin alloy oxide can be obtained from magnetron sputtering vacuum deposition of a cathode of zinc and tin. A non-limiting cathode may contain zinc and tin in the following proportions: 5 wt % to 95 wt % zinc and 95 wt % to 5 wt % tin, for example 10 wt % to 90 wt % zinc and 90 wt % to 10 wt % tin. However, other ratios of zinc to tin may also be used. A suitable metal alloy oxide that may be present in the first dielectric layer 122a is zinc stannate. "Zinc stannate" refers to Zn x Sn 1-x O 2-x (Formula 1), wherein "x" varies in the range of greater than 0 to less than 1. For example, "x" may be greater than 0 and may be any fraction or decimal between greater than 0 and less than 1. For example, when x=2 / 3, Formula 1 is Zn 2 / 3 Sn 1 / 3 O 4 / 3 , which is more commonly described as "Zn 2 SnO 4The zinc stannate-containing film has one or more forms of Formula 1 that account for a major amount in the film.

[0050] In another non-limiting embodiment, the first dielectric layer 122a may include zinc oxide. Zinc oxide may be deposited by a zinc cathode that includes other materials to improve the sputtering characteristics of the cathode. For example, the zinc cathode may include a small amount (e.g., up to 20% by weight, up to 15% by weight, up to 10% by weight, or up to 5% by weight) of tin to improve sputtering. In this case, the resulting zinc oxide film will include a small percentage of tin oxide, such as up to 10% by weight of tin oxide, such as up to 5% by weight of tin oxide. The coating layer deposited by a zinc cathode having up to 10% by weight of tin (added to enhance the conductivity of the cathode) is referred to herein as a "zinc oxide film", although a small amount of tin may be present. It is believed that a small amount of tin in the cathode (e.g., less than or equal to 10% by weight, such as less than or equal to 5% by weight) forms tin oxide in a layer that is primarily zinc oxide.

[0051] In another non-limiting embodiment, the first dielectric layer 122a may include tin oxide.

[0052] In another non-limiting embodiment, the first dielectric layer 122a may include silicon nitride.

[0053] In one non-limiting embodiment, the first dielectric layer 122a may include a multi-film structure. For example, the first dielectric layer 122a may include a first film, such as a metal alloy oxide film. The first film may include a zinc / tin alloy oxide, such as zinc stannate, silicon nitride, aluminum silicon nitride, or tin oxide. The first dielectric layer 122a may include a second film above the first film, which may be a metal oxide film. For example, the second film may include zinc oxide.

[0054] In a non-limiting embodiment, the first dielectric layer 122a may include a multi-film structure. For example, the first dielectric layer 122a may include a first film above the substrate. The first film may be a metal oxide, a metal alloy oxide film, a metal nitride, or a metal alloy nitride. The first film may include a zinc / tin alloy oxide, such as zinc stannate, silicon nitride, silicon aluminum nitride, or tin oxide. The first dielectric layer 122a may include a second film above the first film and in direct contact with the first film, and the second film may be a metal oxide film or a metal alloy oxide. For example, the second film may include zinc oxide or zinc stannate. A third film above the second film and in direct contact with the second film may include zinc oxide.

[0055] The first dielectric layer 122a may have a thickness of at least 1 nm, or at least 2 nm, or at least 5 nm. The first dielectric layer 122a may have a thickness of at most 20 nm, or at most 15 nm. The first dielectric layer 122a may have a thickness in the range of 1 nm to 20 nm, or 2 nm to 20 nm, or 5 nm to 15 nm.

[0056] The patterned coating 120 includes an absorption layer 124 above at least a portion of the first dielectric layer 122a. The absorption layer (which may also be referred to as a reflective layer) may be made of any known absorption material. For example, the absorption layer 124 may include nickel, chromium, iron, stainless steel, niobium, silver, mixtures thereof, and / or combinations thereof. In a non-limiting embodiment, the absorption layer 124 may include subcritical silver. As used herein, "subcritical silver" refers to silver having a subcritical thickness. The absorption layer 124 may have a thickness greater than 0 nm, or at least 0.5 nm, or at least 1 nm. The absorption layer 124 may have a thickness of at most 50 nm, or at most 20 nm, or at most 15 nm, or at most 10 nm, or at most 5 nm. For example, the absorber layer 124 may have a thickness in the range of greater than 0 nm to 20 nm, or greater than 0 nm to 15 nm, or greater than 0 nm to 10 nm, or greater than 0 nm to 5 nm, or 0.5 nm to 20 nm, or 0.5 nm to 15 nm, or 1 nm to 10 nm, or 1 nm to 5 nm. The absorber layer 124 may have a gradient thickness. As used herein, "gradient thickness" refers to a layer thickness that increases or decreases throughout the layer, thereby creating peaks and valleys in the material.

[0057] There may be an absorbing layer 124 above a first portion 126 of the first dielectric layer 122a, wherein the first portion 126 does not cover the entire portion of the first dielectric layer 122a. The absorbing layer 124 above the first portion 126 of the first dielectric layer 122a may have a first reflective aesthetic. There may be no absorbing layer 124 above a second portion 125 of the first dielectric layer 122a. The absence of the absorbing layer 124 above the second portion 125 of the first dielectric layer 122a may produce a second reflective aesthetic. The first reflective aesthetic may be different from the second reflective aesthetic. As used herein, reflected aesthetic refers to visible light reflected color (a*, b*, L*), which is measured by the conventional CIE (1931) and CIELAB systems that will be understood by a person of ordinary skill in the art. If the first reflected aesthetic is different from the second reflected aesthetic, then the contrast between the first reflected aesthetic and the second reflected aesthetic produces a reflective pattern. As used herein, the contrast between the first reflective aesthetic and the second reflective aesthetic is the difference in reflected color between the first reflective aesthetic and the second reflective aesthetic to produce a reflective pattern, and can be measured by the ΔE of the reflectance between the first reflective aesthetic and the second reflective aesthetic as described herein. CMC Measure to quantify.

[0058] The absorption layer 124 may be formed over the first portion 126 of the first dielectric layer 122a and absent over the second portion 125 of the first dielectric layer 122a, creating a pattern using any method known in the art, such as by masking, laser, and / or striping.

[0059] The patterned coating 120 includes a second dielectric layer 128a over at least a portion of the absorber layer 124 and the first dielectric layer 122a (at the second portion 125 when the absorber layer 124 is not present). The second dielectric layer 128a can be a single layer, or can include more than one film of an anti-reflective material and / or a dielectric material, such as, but not limited to, a metal oxide, an oxide of a metal alloy, a metal nitride, a halide, a nitride of a metal alloy metal, an oxynitride, an oxynitride of a metal alloy metal, or a mixture thereof. The second dielectric layer 128a can be transparent to visible light. Examples of suitable metal oxides, metal nitrides, or metal oxynitrides for the second dielectric layer 128a or any film thereof include oxides, nitrides, and / or oxynitrides of titanium, hafnium, zirconium, niobium, zinc, bismuth, lead, indium, tin, aluminum, silicon, and mixtures thereof. The metal oxide may have a small amount of other materials, such as manganese in bismuth oxide, tin in indium oxide, etc. In addition, oxides of metal alloys or metal mixtures may be used, such as oxides containing zinc and tin (e.g., zinc stannate, as defined below), oxides of indium tin alloys, silicon nitrides, silicon aluminum nitrides, or aluminum nitrides. In addition, doped metal oxides may be used, such as antimony or indium tin oxides or nickel or boron doped silicon oxides. The first dielectric layer 122a may be a substantially single-phase film, such as a metal alloy oxide film (e.g., zinc stannate), or may be a mixture of phases consisting of zinc and tin oxides, or may be composed of multiple films. For example, the second dielectric layer 128a may include silicon oxide, silicon nitride, zinc / tin alloy oxides, zinc oxide, and / or titanium dioxide.

[0060] In one non-limiting embodiment, the second dielectric layer 128a may include a multi-film structure. For example, the second dielectric layer 128a may include a first film, such as a metal oxide film. The first film may include zinc oxide. The second dielectric layer 128a may include a second film above the first film, which may be a metal alloy oxide film. For example, the second film may include a zinc / tin alloy oxide, such as zinc stannate. The second dielectric layer 128a may include a third film above the second film. The third film may include Si 3 N 4 , SiAlN, SiON, SiAlON, zinc oxide or some combination thereof.

[0061] The second dielectric layer 128a may have a thickness of at least 25 nm, or at least 30 nm, or at least 40 nm, or at least 50 nm. The second dielectric layer 128a may have a thickness of at most 100 nm, or at most 90 nm, or at most 80 nm, or at most 70 nm, or at most 60 nm. The second dielectric layer 128a may have a thickness in the range of 25 nm to 100 nm, or 30 nm to 90 nm, or 40 nm to 80 nm, or 50 nm to 70 nm, or 50 nm to 60 nm.

[0062] Reference Figure 4A In another non-limiting embodiment, the patterned coating 120 may include a first dielectric layer 122b above at least a portion of the major surface of the substrate 112 (e.g., the second surface 116 of the first layer 12). The first dielectric layer 122b may include a single film or may be a multi-film structure. For example, the first dielectric layer 122b may include a first film, such as a metal alloy oxide film, a metal oxide film, a metal alloy nitride film, or a metal nitride film. The first film may include a zinc / tin alloy oxide, such as zinc stannate, zinc oxide, silicon nitride, silicon aluminum nitride, or tin oxide. The first dielectric layer 122b may include a second film above the first film, which may be a metal oxide film. For example, the second film may include zinc oxide or zinc stannate. Optionally, there may be a third film that may include zinc oxide. If there is a third film, the second film may be zinc stannate.

[0063] The first dielectric layer 122b may include any material that may be used for the first dielectric layer 122a.

[0064] The first dielectric layer 122b may have a thickness of at least 25 nm, or at least 30 nm, or at least 40 nm, or at least 50 nm. The first dielectric layer 122b may have a thickness of at most 100 nm, or at most 90 nm, or at most 80 nm, or at most 70 nm, or at most 60 nm. The first dielectric layer 122b may have a thickness in the range of 25 nm to 100 nm, or 30 nm to 90 nm, or 40 nm to 80 nm, or 50 nm to 70 nm, or 50 nm to 60 nm.

[0065] The patterned coating 120 may include an absorption layer 124 on at least a portion of the first dielectric layer 122b. The absorption layer 124 may be made of any known absorption material. For example, the absorption layer 124 may include nickel, chromium, iron, stainless steel, niobium, silver, mixtures thereof, and / or combinations thereof. In a limited embodiment, the absorption layer 124 may include subcritical silver. As used herein, "subcritical silver" refers to silver having a subcritical thickness. The absorption layer 124 may have a thickness greater than 0 nm, or at least 0.5 nm, or at least 1 nm. The absorption layer 124 may have a thickness of at most 50 nm, or at most 20 nm, or at most 15 nm, or at most 10 nm, or at most 5 nm. For example, the absorber layer 124 may have a thickness in the range of greater than 0 nm to 20 nm, or greater than 0 nm to 15 nm, or greater than 0 nm to 10 nm, or greater than 0 nm to 5 nm, or 0.5 nm to 20 nm, or 0.5 nm to 15 nm, or 1 nm to 10 nm, or 1 nm to 5 nm. The absorber layer may have a gradient thickness. As used herein, "gradient thickness" refers to a layer thickness that increases or decreases throughout the layer, thereby creating peaks and valleys in the material.

[0066] There may be an absorption layer 124 over a first portion 126 of the first dielectric layer 122b, where the first portion 126 does not cover the entire portion of the first dielectric layer 122b. The absorption layer 124 over the first portion 126 of the first dielectric layer 122b may have a first reflective aesthetic. There may not be an absorption layer 124 over a second portion 125 of the first dielectric layer 122b. The absence of the absorption layer 124 over the second portion 125 of the first dielectric layer 122b may produce a second reflective aesthetic. The first reflective aesthetic may be different from the second reflective aesthetic.

[0067] The patterned coating 120 can include a second dielectric layer 128b over at least a portion of the absorber layer 124 and the first dielectric layer 122b (when the absorber layer 124 is not present). The second dielectric layer 128b can include any of the same materials as the second dielectric layer 128a.

[0068] The second dielectric layer may include a single film or may be a multi-film structure. For example, the second dielectric layer 128b may include a first film, such as a metal alloy oxide film or a metal oxide. The first film may include a zinc / tin alloy oxide, such as zinc stannate or zinc oxide. The second dielectric layer 128b may include a second film above the first film, which may be a metal oxide film, an alloy of metal oxides, a metal nitride film, an alloy of metal nitrides, a metal oxynitride film, or an alloy of metal oxynitrides. For example, the second film may include zinc oxide, zinc stannate, silicon nitride, or silicon oxynitride. The second dielectric layer 128b may include a third film above the second film, which may be a metal alloy oxide film. For example, the third film may include zinc stannate, zinc oxide, silicon nitride, or silicon oxynitride.

[0069] The second dielectric layer 128b may have a thickness of at least 1 nm, or at least 2 nm, or at least 5 nm. The second dielectric layer 128b may have a thickness of at most 20 nm, or at most 15 nm. The second dielectric layer 128b may have a thickness in the range of 1 nm to 20 nm, or 2 nm to 20 nm, or 5 nm to 15 nm.

[0070] The first dielectric layer 122a, 122b and the second dielectric layer 128a, 128b may have different thicknesses. Figure 3A In one non-limiting embodiment shown, the second dielectric layer 128a can be thicker than the first dielectric layer 122a. The ratio of the thickness of the second dielectric layer 128a to the thickness of the first dielectric layer 122a can be at least 1.5:1, or at least 2:1, or at least 3:1, or at least 4:1. The ratio of the thickness of the second dielectric layer 128a to the thickness of the first dielectric layer 122a can be at most 40:1, or at most 20:1, or at most 15:1, or at most 10:1, or at most 8:1, or at most 5:1, or at most 4:1. The ratio of the thickness of the second dielectric layer 128a to the thickness of the first dielectric layer 122a can be in the range of 1.5:1 to 40:1, or 2:1 to 20:1, or 3:1 to 15:1, or 3:1 to 10:1, or 3:1 to 8:1, or 3:1 to 5:1.

[0071] exist Figure 4A In another non-limiting embodiment shown in , the first dielectric layer 122b may be thicker than the second dielectric layer 128b. The ratio of the thickness of the first dielectric layer 122b to the thickness of the second dielectric layer 128b may be at least 1.5:1, or at least 2:1, or at least 3:1, or at least 4:1. The ratio of the thickness of the first dielectric layer 122b to the thickness of the second dielectric layer 128b may be at most 40:1, or at most 20:1, or at most 15:1, or at most 10:1, or at most 8:1, or at most 5:1, or at most 4:1. The ratio of the thickness of the first dielectric layer 122b to the thickness of the second dielectric layer 128b may be in the range of 1.5:1 to 40:1, or 2:1 to 20:1, or 3:1 to 15:1, or 3:1 to 10:1, or 3:1 to 8:1, or 3:1 to 5:1.

[0072] In the case where one of the first dielectric layer 122a, 122b and the second dielectric layer 128a, 128b is thicker than the other, the first reflective aesthetic and / or the second reflective aesthetic can be different depending on which direction you view the coated article 100 (i.e., the first side 114 of the substrate relative to the second side 116), due to optical interference of the reflective aesthetic caused by the thickness of the dielectric layer, resulting in an asymmetric reflection. As used herein, the term "asymmetric reflectivity" means that the contrast between the first reflective aesthetic and the second reflective aesthetic of the coating from one side is different from the contrast of the coating from the opposite side. As used herein, "optical interference" refers to the interaction of light with dielectric layers, conductive layers, and light absorbing layers and the distortion of light as it passes through the dielectric layers, conductive layers, and light absorbing layers. Thus, the contrast between the first reflective aesthetic and the second reflective aesthetic can be greater when the coated article 100 is viewed from a first direction, corresponding to a direction in which the coated article 100 is viewed through a side of the coated article 100 that includes a thicker dielectric layer between the first dielectric layer 122a, 122b and the second dielectric layer 128a, 128b, as compared to when the coated article 100 is viewed from a second direction. The second direction corresponds to a direction in which the coated article 100 is viewed through a side of the coated article 100 that includes a thinner dielectric layer between the first dielectric layer 122a, 122b and the second dielectric layer 128a, 128b.

[0073] Due to the optical interference of the dielectric layer present, it is found that the thicker dielectric layer results in a greater contrast between the first reflective aesthetic of the first portion 126 and the second reflective aesthetic of the second portion 125. Due to the optical interference of the thicker dielectric layer (the first dielectric layer 122a, 122b or the second dielectric layer 128a, 128b), the contrast between the first reflective aesthetic and the second reflective aesthetic can be high enough that the pattern created by such contrast is visible (to a human, in the visible spectrum) when the coated article 100 is viewed from the first direction. In contrast, the optical interference of the thinner dielectric layer (the first dielectric layer 122a, 122b or the second dielectric layer 128a, 128b) behaves differently than the optical interference caused by the thicker dielectric layer, so that the contrast between the first reflective aesthetic and the second reflective aesthetic is low enough that the pattern created by such contrast is not visible (to a human, in the visible spectrum) when the coated article 100 is viewed from the second direction.

[0074] As used herein, a pattern being "visible" or "invisible" refers to the visibility of the pattern to the human eye in the visible spectrum, unless expressly stated otherwise. For example, alternative visibilities expressly stated herein include visibility to birds in the ultraviolet spectrum.

[0075] In one non-limiting embodiment, the pattern produced by the contrast is visible in the UV spectrum, making the pattern visible to birds. For example, the pattern produced by the contrast is visible to birds from a first direction in the UV spectrum, but not from a second direction. Alternatively, the pattern produced by the contrast is visible to birds from both the first direction and the second direction in the UV spectrum.

[0076] Because one of the first dielectric layer 122a, 122b or the second dielectric layer 128a, 128b is thicker than the other, the ΔE of the reflection between the first reflective aesthetic and the second reflective aesthetic when the coated article 100 is viewed from the first direction as compared to when the coated article 100 is viewed from the second direction is greater than the ΔE of the reflection between the first reflective aesthetic and the second reflective aesthetic. CMC For example, when the coated article 100 is viewed from a first direction, the ΔE of the reflection between the first reflection aesthetic and the second reflection aesthetic is CMC It may be at least 6, or at least 7, or at least 8. For example, when the coated article 100 is viewed from the second direction, the ΔE of the reflection between the first reflection aesthetic and the second reflection aesthetic is CMC It may be less than 6, or less than 5, or less than 4, or less than 3, or less than 2, or less than 1. The ΔE of the reflection between the first reflection appearance and the second reflection appearance when the coated article 100 is observed from the first direction CMC ΔE of the reflection between the first reflection aesthetic and the second reflection aesthetic when the coated article 100 is viewed from the second direction CMC The ratio can be at least 2:1, or at least 3:1, or at least 5:1, or at least 8:1, or at least 10:1.

[0077] As used herein, ΔE CMC (CIELAB) is a measure of color variation using an integrating sphere with D65 illumination, 10° observer, including specular components, according to ASTM designation: D 2244-05, unless otherwise stated. For example, a ΔE of up to 4 CMC The contrast between the first reflective aesthetic and the second reflective aesthetic is sufficient to make the pattern formed by the contrast between the first reflective aesthetic invisible. As another example, a ΔE of at least 8 CMC It is sufficient to make visible the pattern formed by the contrast between the first reflective aesthetic and the second reflective aesthetic.

[0078] For example, in Figure 3AIn one non-limiting embodiment shown, the second dielectric layer 128a is thicker than the first dielectric layer 122a such that the contrast between the first reflective aesthetic and the second reflective aesthetic is greater when the coated article 100 is viewed from the second side 116 than when the coated article 100 is viewed from the first side 114. Because the second dielectric layer 128a is thicker relative to the first dielectric layer 122a, the optical interference of the second dielectric layer 128a is high such that the contrast between the first reflective aesthetic and the second reflective aesthetic is high enough to provide a greater contrast when the coated article 100 is viewed from the second side 116 (e.g., Figure 3B ), the pattern created by the contrast is visible (to humans, in the visible spectrum). Because the first dielectric layer 122a is thinner than the second dielectric layer 128a, the contrast between the first reflective aesthetic and the second reflective aesthetic can be low enough so that when the coated article 100 is viewed from the first side 114 (as shown in FIG. Figure 3C ), the pattern created by this contrast is invisible (to humans, in the visible spectrum).

[0079] In one non-limiting embodiment, the pattern created by the contrast is visible in the UV spectrum, making the pattern visible to birds. For example, the pattern created by the contrast is visible to birds in the UV spectrum from the second side 116 of the coated article 100, but not visible from the first side 114 of the coated article 100. Alternatively, the pattern created by the contrast is visible to birds in the UV spectrum from both the first side 114 and the second side 116 of the coated article 100.

[0080] Because the second dielectric layer 128a is thicker than the first dielectric layer 122a, the ΔE of the reflection between the first reflective aesthetic and the second reflective aesthetic when the coated article 100 is viewed from the second side 116 is greater than when the coated article 100 is viewed from the first side 114. CMC For example, when the coated article 100 is viewed from the second side 116, the ΔE of the reflection between the first reflection aesthetic and the second reflection aesthetic is CMC It may be at least 6, or at least 7, or at least 8. For example, when the coated article 100 is viewed from the first side 114, the ΔE of the reflection between the first reflection aesthetic and the second reflection aesthetic is CMC It may be less than 6, or less than 5, or less than 4, or less than 3, or less than 2, or less than 1. The ΔE of the reflection between the first reflection aesthetic and the second reflection aesthetic when the coated article 100 is viewed from the second side 116 CMC ΔE of the reflection between the first reflective aesthetic and the second reflective aesthetic when the coated article 100 is viewed from the first side 114 CMC The ratio can be at least 2:1, or at least 3:1, or at least 5:1, or at least 8:1, or at least 10:1.

[0081] exist Figure 4A In another non-limiting embodiment shown, the first dielectric layer 122b is thicker than the second dielectric layer 128b, such that the contrast between the first reflective aesthetic and the second reflective aesthetic is greater when the coated article 100 is viewed from the first side 114 than when the coated article 100 is viewed from the second side 116. Because the first dielectric layer 122b is thicker relative to the second dielectric layer 128b, the optical interference of the first dielectric layer 122b is high, such that the contrast between the first reflective aesthetic and the second reflective aesthetic is high enough that when the coated article 100 is viewed from the first side 114 (e.g., Figure 4C ), the pattern created by the contrast between the first reflective aesthetic and the second reflective aesthetic is visible (to humans, in the visible spectrum). Because the second dielectric layer 128b is thin, the contrast between the first reflective aesthetic and the second reflective aesthetic can be low enough so that when the coated article 100 is viewed from the second side 116 (as shown in FIG. Figure 4B The pattern created by this contrast is invisible (to humans, in the visible spectrum).

[0082] In one non-limiting embodiment, the pattern created by the contrast is visible in the UV spectrum, making the pattern visible to birds. For example, the pattern created by the contrast is visible to birds in the UV spectrum from the first side 114 of the coated article 100, but not visible from the second side 116 of the coated article 100. Alternatively, the pattern created by the contrast is visible to birds in the UV spectrum from both the first side 114 and the second side 116 of the coated article 100.

[0083] Because the first dielectric layer 122b is thicker than the second dielectric layer 128b, the ΔE of the reflection between the first reflective aesthetic and the second reflective aesthetic when the coated article 100 is viewed from the first side 114 is greater than when the coated article 100 is viewed from the second side 116. CMC For example, when the coated article 100 is viewed from the first side 114, the ΔE of the reflection between the first reflection aesthetic and the second reflection aesthetic is CMC It may be at least 6, or at least 7, or at least 8. For example, when the coated article 100 is viewed from the second side 116, the ΔE of the reflection between the first reflection aesthetic and the second reflection aesthetic is CMC It may be less than 6, or less than 5, or less than 4, or less than 3, or less than 2, or less than 1. The ΔE of the reflection between the first reflection aesthetic and the second reflection aesthetic when the coated article 100 is viewed from the first side 114 CMC ΔE of the reflection between the first reflective aesthetic and the second reflective aesthetic when the coated article 100 is viewed from the second side 116 CMC The ratio can be at least 2:1, or at least 3:1, or at least 5:1, or at least 8:1, or at least 10:1.

[0084] In another non-limiting embodiment, the coating 100 may further include a functional coating 130. Figure 5 In one non-limiting embodiment, the functional coating 130 may be over at least a portion of the patterned coating 120. Figure 6 In another non-limiting embodiment, the functional coating 130 can be above at least a portion of the major surface of the substrate 112 (e.g., the second surface 116 of the first layer 12) and below the patterned coating 120 (i.e., between the substrate 112 and the patterned coating 120). The functional coating 130 can be deposited by any conventional method, such as, but not limited to, conventional chemical vapor deposition (CVD) and / or physical vapor deposition (PVD) methods. Examples of CVD processes include spray pyrolysis. Examples of PVD processes include electron beam evaporation and vacuum sputtering (e.g., magnetron sputtering vapor deposition (MSVD)). Other coating methods can also be used, such as, but not limited to, sol-gel deposition. In a non-limiting embodiment, the coating 120 can be deposited by MSVD. Examples of MSVD coating apparatus and methods will be well understood by those of ordinary skill in the art and are described, for example, in the following U.S. Patents: 4,379,040; 4,861,669; 4,898,789; 4,898,790; 4,900,633; 4,920,006; 4,938,857; 5,328,768; and 5,492,750.

[0085] As used herein, "functional coating" refers to a coating that imparts functional benefits to the surface in addition to the decoration of the surface. Non-limiting examples include coatings that impart optical properties, structural properties, electrical properties, hygienic properties, thermal properties and / or physicochemical properties to the surface. Non-limiting examples of functional coatings include at least one of the following: solar control coatings, low-e (low emissivity) coatings, hydrophilic coatings, hydrophobic coatings, oleophilic coatings, low friction coatings, antimicrobial coatings, anti-fingerprint coatings, anti-fog coatings, self-cleaning coatings, easy-to-clean coatings, transparent conductive coatings, and combinations thereof. Non-limiting examples of suitable functional coatings and coated substrates are disclosed in the following documents: US 2017 / 0341977; US2018 / 0118614; US2019 / 0204480; US 7,335,421; US8,865,325; US 9,932,267; and US10,479,724; all of which are incorporated herein by reference in their entirety.

[0086] Reference Figure 7, the coated article 100 may include more than one functional coating 130, such as a first functional coating 130a over at least a portion of a major surface of the substrate 112 (e.g., the second surface 116 of the first layer 12) and below the patterned coating 120, and a second functional coating 130b over at least a portion of the patterned coating 120. If the coated article 100 includes more than one functional coating 130a, 130b, the more than one functional coating 130a, 130b may be the same or different functional coatings from each other, and may be any functional coating known in the art, such as the functional coatings discussed herein.

[0087] The functional coating 130 may be a solar control coating. The functional coating 130 may be a low emissivity (low-e) coating. In a non-limiting embodiment, the functional coating 130 may include a continuous metal layer, such as silver, gold, copper, platinum, or a nickel-chromium alloy. In another non-limiting embodiment, the functional coating 130 may include an indium tin oxide layer and / or a fluorine-doped tin oxide layer. In another non-limiting embodiment, the functional coating may include a halogenated layer.

[0088] The present disclosure also includes a method of making a coated article. The method may include providing a substrate 112 having a first side 114 and a second side 116 opposite the first side 114. The method may optionally include depositing a functional coating 130 over at least a portion of the second side 116 of the substrate 112. The method may also include depositing a patterned coating 120 over at least a portion of the second side 116 of the substrate 112 (or over at least a portion of the functional coating 130).

[0089] The deposition of the patterned coating 120 may include depositing the first dielectric layer 122a, 122b over at least a portion of the second side 116 of the substrate. The deposition of the patterned coating 120 may further include depositing the absorber layer 124 over a first portion 126 of the first dielectric layer 122a, 122b, without depositing the absorber layer 124 over a second portion 125 of the first dielectric layer 122a, 122b. The absorber layer 124 over the first portion 126 of the first dielectric layer 122a, 122b may produce a first reflective aesthetic, and the second portion 125 of the first dielectric layer 122a, 122b (where the absorber layer 124 is not deposited) may produce a second reflective aesthetic.

[0090] The deposition of the absorber layer 124 may include masking the second portion 125 of the first dielectric layer 122a, 122b with a mask and depositing the absorber layer 124 over at least a portion of the first dielectric layer 122a, 122b such that the mask prevents the absorber layer 124 from being deposited over the second portion 125 of the first dielectric layer 122a, 122b. The deposition of the absorber layer 124 may include selectively applying (e.g., stripping) the absorber layer 124 over the first portion 126 of the first dielectric layer 122a, 122b such that the absorber layer 124 is not applied over the second portion 125 of the first dielectric layer 122a, 122b. The deposition of the absorber layer 124 may include depositing the absorber layer 124 over at least a portion of the first dielectric layer 122a, 122b and laser removing the absorber layer 124 from the second portion 125 of the first dielectric layer 122a, 122b.

[0091] The method may further include depositing a second dielectric layer 128a, 128b over at least a portion of the absorber layer 124 and over a second portion 125 of the first dielectric layer 122a, 122b where the absorber layer 124 is not applied. The method may optionally include depositing a functional coating 130 over at least a portion of the second dielectric layer 128a, 128b.

[0092] The following examples illustrate various embodiments of the present invention. However, it should be understood that the present invention is not limited to these specific embodiments. Example

[0093] In the following examples, "Rf" refers to film side reflection and "Rg" refers to glass side reflection. The term "reduced" reflection refers to reduced reflection, thereby reducing the mirror effect. Three coated articles were prepared using the materials and thicknesses in Table 1. The coated article of Example 1 produced a pattern visible when observed from the first side of the substrate. The coated article of Example 2 produced a pattern visible when observed from the second side of the substrate. The coated article of Example 3 produced a pattern visible when observed from the second side of the substrate and had a reduced internal reflection.

Claims

1. A coated product comprising: a substrate having a first side and a second side opposite the first side; and a patterned coating over at least a portion of the second side of the substrate, wherein the patterned coating comprises: a first dielectric layer over at least a portion of the second side of the substrate; an absorbing layer over a first portion of the first dielectric layer and comprising a first reflective aesthetic, and not present over a second portion of the first dielectric layer and comprising a second reflective aesthetic; and a second dielectric layer over at least a portion of the absorber layer; wherein the contrast between the first reflective aesthetic and the second reflective aesthetic forms a pattern; and Wherein the contrast between the first reflective aesthetic and the second reflective aesthetic is greater when the coated product is observed from the first direction than when the coated product is observed from the second direction.

2. The coated article of claim 1, wherein the contrast between the first reflective aesthetic and the second reflective aesthetic is greater when the coated article is viewed from the second side than when the coated article is viewed from the first side. 3 . The coated article of claim 2 , wherein a ratio of a thickness of the second dielectric layer to a thickness of the first dielectric layer is in a range of 2:1 to 20:

1. 4 . The coated article of claim 2 , wherein the second dielectric layer has a thickness in a range of 25 nm to 100 nm. 5 . The coated article of claim 2 , wherein the first dielectric layer has a thickness in a range of 2 nm to 20 nm.

6. The coated article of claim 1, wherein the absorbent layer comprises nickel, chromium, iron, stainless steel, niobium, subcritical silver, or combinations thereof.

7. The coated article of claim 1, further comprising a functional coating over at least a portion of the substrate and over and / or under the patterned coating.

8. The coated article of claim 1, wherein the absorbing layer comprises a thickness in a range from greater than 0 nm to 5 nm.

9. The coated article of claim 1, wherein the substrate comprises glass or a plastic material.

10. The coated article of claim 1, wherein a combined thickness of the first dielectric layer and the second dielectric layer is in a range of 40 nm to 60 nm.

11. The coated article of claim 1 , wherein the coated article is an architectural glazing or a laminate.

12. The coated product according to claim 2, wherein: When viewed from a second side of the coated article, the contrast between the first reflective aesthetic and the second reflective aesthetic is visible in reflection to a bird.

13. The coated article of claim 2, wherein the first dielectric layer comprises a thickness such that the pattern is not visible in reflection when viewed from a first side of the coated article; and wherein the second dielectric layer comprises a thickness such that the pattern is visible in reflection when viewed from a second side of the coated article.

14. The coated product according to claim 2, wherein: The ΔE of the reflection between the first reflection aesthetic and the second reflection aesthetic when viewed from the first side CMC Less than 4.

15. The coated product according to claim 2, wherein: The ΔE of the reflection between the first reflection aesthetic and the second reflection aesthetic when viewed from the second side CMC Greater than 8.

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