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    • 专利摘要:
    ARTICLE COATED WITH LOW COATING AND THAT HAS AN ABSORBENT LAYER ON A FUNCTIONAL LAYER INTENDED TO INCREASE EXTERNAL REFLECTANCE. The present invention relates to a coated article including low E coating having an absorbent layer located on a functional layer (IR reflection layer) and designed to make the coating have increased external reflectance and good selectivity. In certain embodiments, the absorbent layer is metallic, or substantially metallic, and is provided directly in and placed in contact with a lower layer of two layers of IR reflection. In certain exemplifying embodiments, a nitride-based layer can be located directly on and come in contact with the absorbent layer in order to reduce or prevent its oxidation during heat treatment (for example, thermal relaxation, thermal flexion and / or reinforcement thereby allowing predictable coloring, high values of external reflectance and / or good selectivity to be achieved. Coated articles according to certain exemplary embodiments of the present invention can be used in the context of insulating glass (IG) window units, vehicle windows, other types of windows, or any other appropriate application.
    公开号:BR112014008661B1
    申请号:R112014008661-3
    申请日:2012-09-14
    公开日:2020-12-22
    发明作者:Kevin O'Connor；Jingyu Lao；John Wolff
    申请人:Guardian Glass, LLC；
    IPC主号:
    专利说明:

    [001] The present invention relates to a coated article that includes a low E coating. In certain exemplifying embodiments, an absorbent low E coating layer is located on a functional layer (IR reflection layer) and designed to make the coating have an increased external reflectance (for example, in a unit of the IG window), and / or an increased reflectance on the side of the glass (for example, measured monolithically), and good selectivity. In certain exemplifying modalities, the absorbent layer is metallic, or substantially metallic, and is provided directly on and placed in contact with a lower layer of two layers of IR reflection. In certain exemplifying embodiments, a nitride-based layer (for example, silicon nitride or the like) is located directly on and in contact with the absorbent layer in order to reduce or prevent its oxidation during heat treatment (for example, thermal slowing, thermal flexing and / or thermal reinforcement) thereby allowing predictable coloring, high values of external reflectance and / or good selectivity to be obtained after heat treatment. Coated articles according to certain exemplary embodiments of the present invention can be used in the context of insulating glass (IG) window units, vehicle windows, other types of windows, or in any other appropriate application. BACKGROUND OF THE INVENTION
    [002] Coated articles are known in the state of the art for use in window applications such as insulating glass (IG) window units, vehicle windows, and / or the like. It is known that, in certain examples, it is desirable to treat thermally (for example, thermal softening, thermal flexion and / or thermal reinforcement) such coated articles for purposes of relaxation, flexion or the like in certain exemplifying cases.
    [003] In certain situations, designers of coated articles often strive for a combination of high external reflectance for aesthetic purposes combined with good selectivity, desirable visible transmission, low emissivity (or emissivity), and a low leaf resistance (Rs). The characteristics of low emissivity (low E) and low foil resistance allow such coated articles to block significant amounts of IR radiation in order to reduce, for example, undesirable heating of vehicle or building interiors. However, heat treatment of coated articles typically requires the use of temperatures of at least 580 degrees Celsius, more preferably at least about 600 degrees Celsius and even more preferably at least 620 degrees Celsius. The use of such high temperatures (for example, for 5 to 10 minutes or more) often causes the coatings to break, to have an undesirably low visible reflectance of the outside and / or to cause one or more of the desirable characteristics mentioned above deteriorate significantly in an undesirable manner.
    [004] US Patent Document 2005/0202254, of the same title as the present and incorporated herein by reference, presents a coated article that has the following layers on a glass substrate, from the glass substrate to the outside . Layer Glass substrate TiO2 Si3N4 ZnO Ag NiCrOx SnO2 Si3N4 SnO2 ZnO Ag NiCrOx SnO2 Si3N4
    [005] Although the aforementioned coated article can be heat treated, and has many desirable and good characteristics, it has problems with regard to its visible reflectance from the undesirably low external part when the coated article is used in a IG window. In particular, U.S. patent 2005/0202254 states that IG window units that have the coating can only achieve a visible reflectance on the outer glass side of 1 to 12%.
    [006] As another example, although the U.S. Patent coated article #No. 8.017.243 has many desirable and good characteristics, it has problems with regard to its visible reflective external reflectance or the side of the undesirably low glass. In particular, the tables in the '243 patent show that the IG window units that have the coating can only achieve a visible reflectance on the outer glass side of 1 to 14% (see RgY values).
    [007] As another example, although the U.S. Patent coated article #No. 7,419,725 has many desirable and good characteristics, it has problems with regard to the reflective external reflectance or the side of the undesirably low glass. In particular, Examples 1 and 2 in the '725 patent show that the IG window units that have the coating can only achieve a visible reflectance on the outer glass side of 16.9 to 17.7% (see values of RgY).
    [008] In view of the above, it will be apparent to those skilled in the art that there is a need in the prior art for a coated article with more desirable optical characteristics (for example, a higher visible reflectance on the outside glass side in an IG window unit combined with a low emissivity and a desirable visible transmission). BRIEF DESCRIPTION OF THE EXEMPLIFIED MODALITIES OF THE INVENTION
    [009] The present invention relates to a coated article that includes a low E coating. In certain exemplary embodiments, an absorbent layer of the low E coating is located on a functional layer (IR reflection layer) and is intended to cause the coating to have an increased visible external reflectance (for example, in an IG window unit) and / or an increased visible reflectance on the glass side (for example, measured monolithically), along with a visible transmission, selectivity, low SHGC and desired low emissivity. In certain exemplifying modalities, the absorbent layer is metallic, or substantially metallic, and is provided directly over and placed in contact with a lower layer of two layers of IR reflection. In certain exemplary embodiments, the metallic or substantially metallic absorbent layer (for example, NiCr) has a thickness of about 25 to 50 angles (A). Unexpectedly, it has been surprisingly found that this increases the visible external reflectance in applications of IG window units and / or increases the visible reflectance on the side of the glass when measured monolithically, while still allowing the visible transmission and low emissivity desirable. In certain exemplifying modalities, a nitride-based layer (for example, silicon nitride or the like) is located directly on and in contact with the absorbent layer in order to reduce or prevent its oxidation during heat treatment ( for example, thermal slowing, thermal flexion and / or thermal reinforcement) thereby allowing predictable coloring, high values of external reflectance and / or good selectivity to be obtained after heat treatment. Coated articles according to certain exemplary modalities of the present invention can be used in the context of insulating glass (IG) window units, vehicle windows, other types of windows, or in any other appropriate application.
    [0010] In certain exemplary embodiments of the present invention, a coated article is provided which includes a coating supported by a glass substrate, in which the coating comprises: first and second layers of infrared radiation (IR) reflection ) comprising silver, where the first IR reflecting layer is located closer to the glass substrate than the second IR reflecting layer, and the first IR reflecting layer comprising silver is located on and directly in contact with a layer comprising zinc oxide; a substantially metallic absorption layer located on and directly in contact with the first IR reflection layer; a layer comprising a nitride located on and directly in contact with the substantially metallic absorption layer; a layer comprising a metal oxide located on the layer comprising nitride; at least one dielectric layer located on the second IR reflection layer; and where the coating has a foil resistance of less than or equal to 3.0 ohms / square, and the coated article measured monolithically has a visible transmission of about 20 to 70% and a visible reflectance on the glass side at least 20%. In certain exemplary embodiments, the coated article can be heat treated (for example, thermally softened so that the softening is carried out when the coating is on the glass substrate). In certain exemplary embodiments, the coated article may be provided in an IG window unit. BRIEF DESCRIPTION OF THE DRAWINGS
    [0011] Figure 1 is a cross-sectional view of an article coated according to an exemplary embodiment of the present invention.
    [0012] Figure 2 is a cross-sectional view of an IG unit according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION OF EXEMPLIFIED MODALITIES- RAS OF THE INVENTION
    [0013] Coated articles can be used here in applications such as GI window units, vehicle windows, monolithic architectural windows, residential windows and / or any other suitable application that includes single or multiple glass substrates.
    [0014] In certain exemplary embodiments of the present invention, the coating includes a double silver stack, although the present invention is not limited to this in all cases.
    [0015] For example, in certain exemplary embodiments of the present invention, coated heat-treated (HT) and / or non-heat-treated articles that have multiple layers of IR reflection (for example, two spaced silver-based layers) of each other) can achieve a sheet resistance (Rs) of less than or equal to 3.0 (more preferably less than or equal to 2.5, still more preferably less than or equal to 2.0, and with the maximum preference less than or equal to 1.7). In certain exemplifying modalities, after and / or before heat treatment (HT) and as measured in monolithic form, coated articles can achieve a visible transmission (Ill C, 2 degrees) of about 20 to 70%, more preferably about 30 to 60%, even more preferably about 35 to 55%, and most preferably about 40 to 50%. In addition, in certain exemplifying embodiments (with HT or without HT), when coupled with another glass substrate to form a GI window unit, items coated with GI window unit according to certain exemplary modalities of the present invention can achieve a visible transmission of about 20 to 70%, more preferably about 30 to 60%, even more preferably about 35 to 55%, most preferably about 40 to 50%, and with a maximum preference of about 41 to 46%. In certain exemplifying modalities, after and / or before heat treatment (HT) and as measured in monolithic form, the visible reflectance on the side of the glass (RgY%) is significantly higher (for example, at least about 5% larger, more preferably at least about 10% or 15% higher than the visible reflectance on the film side (RfY%). For example, where 24% is the visible reflectance on the glass side and 12% is the visible reflectance on the film side, the visible reflectance on the glass side is 12% higher than the visible reflectance on the film side (24% - 12% = 12%) .In certain exemplary embodiments of the present invention, before and / or before heat treatment (HT) and as measured in monolithic form, coated articles can achieve a visible reflectance on the glass side (RgY%) of at least 20%, more preferably from 20 to 50%, even more preferably from about 20 to 40%, more preferably from about 20 to 35%, with even more p approximately 22 to 35%, and with a maximum preference of about 24 to 30%. In addition, in certain exemplifying modalities (with HT or without HT), when coupled with another glass substrate to form a GI window unit, the items covered in the GI window unit according to certain exemplary modalities of the present invention can achieve a visible reflectance on the side of the glass (RgY%) of at least 20%, more preferably of about 20 to 50%, even more preferably of about 20 to 40%, more preferably about 20 to 35%, more preferably about 22 to 35%, even more preferably about 23 to 30% or about 24 to 29%, and with the most preference about 25 to 27%). In certain exemplifying embodiments, the coating also allows IG units to have an SHGC value of less than 0.27, more preferably less than 0.25, and even more preferably less than 0.24 in combination with any of the present modalities.
    [0016] The terms "heat treatment" and "heat treated", as used herein, mean the heating of the article to a temperature sufficient to obtain thermal softening, thermal bending, and / or thermal reinforcement. of the inclusive glass article. This definition includes, for example, heating a coated article in an oven or furnace to a temperature of less than about 580 degrees Celsius, more preferably at least about 600 degrees Celsius, for a period sufficient to allow slowing down, flexing and / or thermal reinforcement. In certain instances, HT can be performed for at least about 4 or 5 minutes. The coated article may or may not be heat treated in different ways than the present invention.
    [0017] Figure 1 is a side cross-sectional view of a coated article according to a non-limiting embodiment exemplifying the present invention. The coated article includes substrate 1 (e.g. transparent, green, bronze or blue-green glass substrate about 1.0 to 10.0 mm thick, more preferably about 1.0 mm to 7 mm, 0 mm thick, even more preferably about 5 to 7 mm thick, where an exemplary thickness is about 6 mm), and the low E coating (or layer system) 30 provided in the substrate 1 directly or indirectly. The coating (or layer system) 30 includes, for example: a layer based on bottom and / or inclusive dielectric silicon nitride 3 which may be Si3N4 (which may or may not be doped with other material (s) (s) such as aluminum in certain exemplary examples) of the Si-rich type to reduce turbidity, or any other silicon nitride of appropriate stoichiometry in different modes than the present invention, a first dielectric contact layer bottom 7 (which comes into contact with the IR reflection layer 9), a first conductive infrared (IR) reflection layer, preferably metallic 9, metallic or substantially metallic absorbent layer 4 (for example, of or including NiCr or the like) which is located on and directly in contact with the IR reflection layer 9), an inclusive and / or inclusive dielectric silicon nitride layer 14 that is located on and directly in contact with the abs layer orvent 4, an interlayer based on tin oxide and / or inclusive 15, a second layer of lower dielectric contact 17 (which comes into contact with the IR reflection layer 19), a second layer of re - conductive and preferably metallic IR bending 19, an upper contact layer 21 (which comes into contact with the IR reflection layer 19), a dielectric layer 23 and finally a protective dielectric layer 25. Each of the "contact" layers 7, 17 and 21 come into contact with at least one IR reflection layer (for example, the Ag-based layer). The layers 3-25 mentioned above make up the low E (ie low emissivity) coating 30 which is provided on the glass or plastic substrate 1. In certain exemplary embodiments, there is no layer with a high dielectric index (for example , the TiO2 layer) between the lower IR reflection layer 9 and the glass substrate 1 ("high index layer" means a layer having a refractive index n greater than about 2.15).
    [0018] In certain exemplifying modalities, the problem is being solved is the way to create a coating that has a high differential between the reflection on the glass side (RgY) and the reflection on the film side (RfY), including, for example, after the heat treatment process (for example, thermal slowdown). Typically, with double silver plated designs the difference between the magnitude of the glass side and the visible reflections of the film is low. A high differential is aesthetically desired for certain markets such as certain parts of the commercial market. Thus, in certain exemplary embodiments of the present invention, the coated articles were designed to have a high visible reflection on the glass side, of the mirror type, while maintaining a visible reflection on the lower film side. Although certain simple silver coatings could do this in the past, certain exemplary embodiments of the present invention refer to a multiple silver coating that can achieve this. A drawback of such unique silver coatings is that they tend to have a very high solar heat gain coefficient (SHGC) of 0.29 and cannot meet the SHGC energy code standard <0.25 that is proposed where high solar loads are common. Certain exemplary embodiments of the present invention meet the energy code standards by providing a SHGC of about 23 while maintaining a high reflective aesthetics discussed here. In certain exemplary embodiments of the present invention, using a metallic or substantially metallic "absorbent" NiCr layer instead of a "transparent" NiCrOx layer on top of the bottom silver, a high RgY / RfY differential after treatment term can be obtained. In certain exemplifying modalities, in order to avoid significant oxidation of NiCr to NiCrOx above the bottom plate during the heating process, a layer of nitride such as silicon nitride is deposited directly on top of the absorbent layer of NiCr. In addition, in certain exemplifying modalities, in order to minimize or reduce the transmitted turbidity and maintain optical properties during heating, a small amount of nitrogen (50 ml) can be introduced into the absorbent layer directly on the silver below. Nitrogen has little impact on NiCr's immediate optical properties but allows it to remain metallic or substantially metallic during heating.
    [0019] In monolithic cases, the coated article includes only a glass substrate 1 as illustrated in Figure 1. However, monolithic coated articles can be used here in devices such as vehicle laminated windshields, IG window, and still others. As for the IG window units, an IG window unit can include two glass substrates spaced from each other. An exemplary IG window unit is illustrated and described, for example, in U.S. Patent #No. 7,189,458, whose quotation is hereby incorporated by reference. An exemplary IG window unit can include, for example, the coated glass substrate 1 shown in Figure 1 coupled to another glass substrate through spacer (s), seal (s) or the like, with a opening defined between them. This gap between substrates in IG unit modes can in some instances be filled with a gas such as argon (Ar). An exemplary IG unit can comprise a pair of transparent glass substrates spaced from each other, each about 3 to 7 mm (for example, 6 mm) thick, one of which is coated here with a coating 30 in certain exemplary cases, where the gap between the substrates can be about 5 to 30 mm, more preferably about 10 to 20 mm, and even more preferably about 12 mm. In certain exemplary cases, the coating 30 can be provided on the inner surface of one or another substrate that faces the opening, however, in preferred embodiments the coating 30 is provided on the internal surface of the external glass substrate 1 as shown in Figure 2. An exemplary IG window unit is also shown in Figure 2 and can include, for example, the coated glass substrate 1 shown in Figure 1 coupled to another glass substrate 2 via spacer (es) ), seal (s) or the like 4 with an opening 6 defined between them. This opening 6 between substrates in IG unit modalities can in certain cases be filled with a gas such as argon (Ar). The opening 6 may or may not be at a pressure less than atmospheric in different embodiments of the present invention.
    [0020] Still with reference to Figure 2, an exemplary IG unit can comprise a pair of glass substrates spaced from each other (1 and 2) each of which is about 6 mm thick, one of which it is coated here with a coating 30 in certain exemplary cases, where the gap 6 between the substrates can be about 5 to 30 mm, more preferably about 10 to 20 mm, and even more preferably about 12 to 16 mm. In certain exemplary embodiments, the coating 30 is provided on the inner surface of the outer glass substrate 1 as shown in Figure 2 (that is, on the surface # 2 of the outer part), although it can be provided on the other substrate 2 in modalities alternatives of the present invention.
    [0021] The absorption layer 4, in certain exemplifying modalities of the present invention, is located on and directly in contact with the lower IR reflection layer 9. In certain exemplifying modalities, layer 14 directly located on and in contact with absorption layer 4 it is a nitride-based layer and is substantially or entirely non-oxidized. This is advantageous, as it helps to prevent (or reduce the probability) that the absorption layer is oxidized during heat treatment, thereby allowing the absorption layer to better perform one of its intended functions, in particular absorbing at least some amount (e.g., at least 5%, more preferably at least 10%) of visible light. It should be appreciated that if a layer becomes too oxidized during heat treatment or the like, it can no longer function as an adequate absorption layer.
    [0022] In certain exemplary embodiments of the present invention, absorption layer 4 may be of or include Ni and / or Ccr (for example, NiCr with any appropriate Ni: Cr ratio). In certain exemplifying modalities, it is desirable that the absorption layer 4 comprises 0 to 10% oxygen, more preferably 0 to 5% oxygen, and even more preferably 0 to 2% oxygen (atomic%) . In addition, 0 to 20% nitrogen, more preferably 1 to 15% nitrogen, and even more preferably 1 to 10% nitrogen (atomic%) can be provided in the absorbent layer 4. Although NiCr (for example, example, possibly nitride in certain exemplary modalities) is a preferred material for absorption layer 4, it is possible that other materials may preferably be used or in addition to Ni and / or Cr. For example, in certain other exemplary embodiments of the present invention, the absorption layer 4 can be of or include Ni, Cr, NiCrNx, CrN, ZrN, or the like. In non-thermally treated modes, any of the materials mentioned above can be used for the absorption / absorbent layer 4, as well as other materials such as Ti, Zr, NiOx or the like.
    [0023] The absorbent layer 4 of the low E coating is intended to make the coating and / or the coated article (including an IG unit in certain embodiments) have an outer side (and / or side of glass) with increased visible reflectance (for example, in a GI window unit), along with the desired visible transmission, selectivity, a low SHGC, and a low emissivity. In certain exemplary embodiments, the metallic or substantially metallic absorbent layer (eg NiCr) 4 is thinner than the upper contact layer 21 and is about 25 to 80 angstroms, more preferably about 25 to 50 angstroms (A) thick, more preferably about 30 to 40 angstroms (A) thick, and even more preferably about 33 to 37 angstroms (A) thick (for example, about 35 thick angstroms). In addition, in certain exemplary embodiments, the absorbent layer 4 is metallic or only slightly oxidized, whereas the upper contact layer 21 is significantly oxidized (for example, at least about 50% oxidized). In this way, layer 4 functions as an absorbent layer and surprisingly results in a significantly increased external reflectance or on the glass side of the coated article, whereas the upper contact layer 21 does not function as an absorbent layer.
    [0024] In certain exemplary embodiments, the metallic or substantially metallic absorbent layer 4 is located directly between and in contact with the metallic or substantially metallic IR reflection layer 9 and the nitride layer 14 in order to reduce or prevent the oxidation of layer 4 during reflectance thereby allowing heat treatment (for example, thermal slowing, thermal flexion and / or thermal reinforcement) and visible transmission to be achieved after heat treatment (HT).
    [0025] Furthermore, in certain exemplary embodiments, a layer based on metal oxide and / or inclusive 15 of or including a tin oxide may be provided between the layer based on nitride 14 and the layer of reflection of superior infrared (IR) radiation 19 and in particular, in certain exemplifying modalities, between and directly in contact with the nitride-based layer 14 and the contact layer based on zinc oxide and / or inclusive 17. For example, it has been found that the use of such an inclusive tin oxide interlayer 15 results in a coated article that can provide desired optical characteristics.
    [0026] The dielectric layers 3, 14 and 25 can be of or include silicon nitride in certain embodiments of the present invention. The silicon nitride layers 3, 14 and 25 can, among other things, improve the thermal treatability of coated articles, for example, such as thermal softening or the like. The silicon nitride of these layers can be of the stoichiometric type (i.e., Si3N4), or alternatively of the type rich in silicon in the different embodiments of the present invention. For example, Si 3-rich silicon nitride (and / or 14) combined with zinc oxide and / or tin oxide under a silver-based IR reflection layer can allow silver to be deposited (for example, example, through ion bombardment or the like) in a way that causes its foil strength to be reduced compared to certain other material (s) that were under silver. In addition, the presence of free silicon in an inclusive layer of Si 3-rich silicon nitride can allow certain atoms such as sodium (Na) that migrate out of glass 1 during HT to be stopped more efficiently by the inclusive layer of Si-rich silicon nitride before they can reach the silver and damage it. In this way, it is believed that Si-rich SixNy can reduce the amount of damage done to the silver layer (s) during HT in certain exemplary modalities of the present invention, thereby allowing the sheet resistance (Rs) decreases or remains more or less identical in a satisfactory manner. In addition, it is believed that Si-rich SixNy in layer 3 can help reduce the amount of damage (eg, oxidation) done to the absorbent layer 4 during HT in certain optional exemplary embodiments of the present invention. In certain exemplary embodiments, when SI-rich silicon nitride is used in layer 3 and / or 14, the Si-rich silicon nitride layer as deposited can be characterized by the SixNy layer (s) , where x / y can vary from 0.76 to 1.5, more preferably from 0.8 to 1.4, and even more preferably from 0.85 to 1.2. In addition, in certain exemplifying modalities, before and / or after HT the Si-rich SixNy layer (s) may have a refractive index "n" of at least 2.05, with more preferably at least 2.07, and sometimes at least 2.10 (for example, 632 nm) (Note: the stoichiometric Si3N4 that can also be used has an "n" index of 2.02-2.04) . In certain exemplary modalities, it has been surprisingly found that improved thermal stability can be achieved especially when the Si-rich SixNy layer (s) as deposited has (have) an index of refraction "n" of at least 2.10, more preferably of at least 2.20, and even more preferably of 2.2 to 2.4.
    [0027] Any and / or all of the silicon nitride layers discussed herein can be doped with other materials such as stainless steel or aluminum in certain exemplary embodiments of the present invention. For example, any and / or all of the silicon nitride layers discussed herein (for example, 3, 14 and / or 25) can optionally include about 0 to 15% aluminum, more preferably about 1 to 10 % aluminum, in certain exemplary embodiments of the present invention. Silicon nitride can be deposited by ionic bombardment of a Si or SiAl target in certain embodiments of the present invention. Oxygen can also be used in certain instances in one or more of the layers of silicon nitride. Due to the fact that layer 14 is provided to protect absorbent layer 4 against oxidation during HT, in certain exemplary modalities, the layer based on silicon nitride 14 is at least about 50 angstroms more thin, more preferably at least about 100 angstroms thinner, than one or both layers based on silicon nitride 3 and / or 25. In certain exemplary modalities, the layer based on silicon nitride 14 is at least about 100 angstroms thinner than the silicon nitride based layer 25 and is at least about 50 angstroms thinner than the silicon nitride based layer 3. Although silicon nitride is a preferred material for layers 3, 14 and 25 in certain exemplary embodiments of the present invention, it should be recognized that other materials in place of or in addition to may be used for one or more of these layers in alternative embodiments of the present invention.
    [0028] Infrared radiation reflection layers (IR) 9 and 19 are preferably substantially or entirely metallic and / or conductive, and may comprise or consist essentially of silver (Ag), gold, or any other reflection material appropriate IR. The IR 9 and 19 reflection layers help to allow the coating to have good low E characteristics and / or solar control. The IR reflection layers can, however, be slightly oxidized in certain embodiments of the present invention. In certain exemplary embodiments, the top IR reflection layer 19 is thicker (for example, at least about 5 angstroms thicker, and more preferably at least about 10 or 15 angstroms thicker) than the lower IR reflection layer 9.
    [0029] The upper contact layer 21 can be of or include nickel oxide (Ni), chromium / chromium oxide (Cr), or a nickel alloy oxide, such as nickel chromium oxide (NiCrOx) , or other appropriate material (s), in certain exemplary embodiments of the present invention. The use, for example, of NiCrOx in layer 21 allows the durability to be improved. The NiCrOx of layer 21 can be entirely (or substantially integrally) oxidized in certain embodiments of the present invention (i.e., entirely stoichiometric), or it can only be partially oxidized. In certain examples, the NiCrOx 21 layer can be at least about 50% oxidized. The contact layer 21 (for example, from or including Ni and / or Cr oxide) may or may not be graded on oxidation in different modalities of the present invention. The degree of oxidation means that the degree of oxidation in the layer changes in the thickness of the layer so that, for example, a contact layer can be graded so that it is less oxidized at the contact interface with the IR reflection layer 19 immediately adjacent than in a part of the contact layer even further / the furthest from the immediately adjacent IR reflection layer 19. The contact layer 21 (e.g., of or including a Ni and / or Cr oxide) may or may not be continuous in modalities other than the present invention through substantially the entire IR reflecting layer 19.
    [0030] The dielectric layer 15 may be of or include tin oxide in certain exemplary embodiments of the present invention. However, as with other layers in this case, other materials can be used in different cases.
    [0031] The lower contact layers 7 and / or 17 in certain embodiments of the present invention are of or include zinc oxide (for example, ZnO). The zinc oxide of layers 7 and 17 can also contain other materials such as Al (for example, to form ZnAlOx) and / or tin. For example, in certain exemplary modalities of the present invention, one or more of the layers based on zinc oxide 7, 17 can be doped with about 1 to 10% Al, more preferably about 1 to 5% Al, and even more preferably about 1 to 4% Al.
    [0032] The dielectric layer 23 can be of or include tin oxide in certain exemplary embodiments of the present invention. Like other coating layers, layer 23 is optional and need not be provided in certain exemplary embodiments of the present invention. The dielectric layer 25, which can be a cover coating in certain exemplary examples, can be of or include silicon nitride (for example, Si3N4) or any other suitable material in certain exemplary embodiments of the present invention. Optionally, other layers (for example, a layer of or including zirconium oxide) can be provided on top of layer 25. Layer 25 is provided for durability purposes, and to protect the underlying layers during heat treatment and / or environmental use. In certain exemplary embodiments, layer 25 may have a refractive index (n) of about 1.9 to 2.2, and more preferably of about 1.95 to 2.05.
    [0033] Another layer (s) below or above the illustrated coating can also be provided. Thus, although the layer or coating system 30 is "on" or "supported by" substrate 1 (directly or indirectly), another layer (s) can be provided between them. Thus, for example, the covering of Figure 1 can be considered "on" and "supported by" substrate 1 even if another layer (s) is provided between the bed - da 3 and the substrate 1. In addition, certain layers of the illustrated coating can be removed in certain embodiments, while other layers not shown can be added between the various layers in different exemplifying modalities, or (s) several layers (s) can be divided with other layer (s) added between the sections divided into other embodiments of the present invention without departing from the general character of certain embodiments of the present invention.
    [0034] Although various thicknesses and materials can be used in the layers in different modalities of the present invention, the thicknesses and exemplary materials for the respective layers deposited by ion bombardment on the glass substrate 1 in Figure 1 modality are as follows, the glass substrate out: Exemplifying Materials / Thicknesses; Figure 1 mode

    [0035] In certain exemplary embodiments of the present invention, the present coated articles may have the following optical and solar characteristics indicated in Table 2 when measured 5 monolithically (before any optional HT). The relevant optical characteristics are in accordance with Ill C 2 °, but it should be noted that the L * values are from Hunter. The sheet resistances (Rs) in this case take into account all IR reflection layers (for example, silver-based layers 9, 19). Optical / Solar Characteristics (Monolithic; pre-HT and / or post-HT )

    [0036] In addition, in certain exemplary embodiments of the present invention, the present coated articles which may optionally have been heat treated to a sufficient extent for relaxation, and which have been coupled to another glass substrate for form an IG unit, they may have the following optical / solar characteristics of the IG unit. It should be noted that when the coating 30 is on the surface # 2 of the GI window unit as shown in Figure 2, the visible reflectance of the outside of the GI window unit is represented by RgY in the table below.
    [0037] Exemplifying Optical Characteristics (GI Unit)

    [0038] In addition, in certain embodiments -10 ras the coated article is thermally stable with heat treatment (for example, thermal softening), characterized by having a ΔE * value reflective on the glass side due to the HT of no more than than about 5.0, more preferably no more than about 4.5, when measured monolithically.
    [0039] The following examples are provided for illustrative purposes only, and should not be limiting, unless otherwise stated. EXAMPLES
    [0040] Example 1 below was prepared by ion bombardment on 6 mm thick transparent glass substrates in order to have the stack of layers indicated below. Example 1 is according to the exemplary embodiments of the present invention as shown in Figure 1. Example 1 had the following stack of layers, where thicknesses are in angles units (A).

    [0041] Example 1 was thermally slowed down and calculated to have more or less the following characteristics measured monolithically after HT.


    [0042] The softened coated substrate of Example 1 was then coupled to another 6 mm clear glass substrate, with a 12 mm air gap between them, to form an IG window unit as shown in Figure 2 and simulated as having 5 or more the following characteristics.
    [0043] The softened coated substrate of Example 1 was then coupled to another 6 mm clear glass substrate, with a 12 mm air gap between them, to form an IG window unit as shown in Figure 2 and simulated as having 10 more or less the following characteristics.

    [0044] Although the invention has been described in connection with what is presently considered the most practical and most preferred modality, it should be understood that the invention should not be limited to the modality presented, but, on the contrary, it lends itself to cover various modifications and equivalent arrangements included within the character and scope of the appended claims. Any modality described here may or may not be used in combination with any other modality described here.
    权利要求:
    Claims (18)
    [0001]
    1. Coated article, which includes a coating (30) supported by a glass substrate (1), in which the coating is characterized by the fact that it comprises: first and second layers of reflection of infrared radiation (IR) comprising silver (9, 19), where the first IR reflection layer (9) is located closer to the glass substrate (1) than the second IR reflection layer (19), and where the first IR reflection layer (19) IR comprising silver (9) is located on and directly in contact with a layer comprising zinc oxide (7); a metallic absorption layer (4) located on and directly in contact with the first IR reflection layer (9); a layer comprising a nitride (14) located on and directly in contact with the metallic absorption layer (4); a layer comprising metal oxide (15) located on the layer comprising nitride (14); at least one dielectric layer (23; 25) located on the second IR reflection layer (19); and where the coating has a sheet resistance of less than or equal to 3.0 ohms / square, and the monolithically measured coated article has a visible transmission of 20 to 70% and a visible reflectance on the glass side of at least 20 % and where the visible reflectance on the glass side (RgY%) is at least 10% higher than the visible reflectance on the film side (RfY%).
    [0002]
    2. Coated article according to claim 1, characterized by the fact that no dielectric layer with a high dielectric index is located between the first IR reflection layer (9) and the glass substrate (1).
    [0003]
    Coated article according to claim 1 or 2, characterized in that the metallic absorption layer (4) has a thickness of 25 to 50 angstroms.
    [0004]
    Coated article according to any one of claims 1 to 3, characterized in that said absorption layer (4) comprises a NiCr nitride.
    [0005]
    5. Coated article according to any one of claims 1 to 4, characterized by the fact that the coated article is thermally tempered and has a ΔE * value of the glass side reflectance of less than or equal to 4.5 due to the temper.
    [0006]
    6. Coated article according to any one of claims 1 to 5, characterized in that the visible reflectance on the glass side is at least 15% higher than the visible reflectance on the film side of the coated article.
    [0007]
    7. Coated article according to claim 1, characterized by the fact that the coating further comprises: a first layer comprising silicon nitride (3) supported by the glass substrate, wherein the layer comprising zinc oxide (7) is located on and directly in contact with the first layer comprising silicon nitride (3), and where the metallic absorption layer (4) located on and directly in contact with the first IR reflection layer (9) comprises Ni and / or Cr, and in which the layer comprising a nitride (14) located on and directly in contact with the metallic absorption layer (4) comprises silicon nitride, and in which the layer comprising metal oxide (15) it is located on and directly in contact with the second layer comprising silicon nitride (14); and wherein the coating further comprises a second layer comprising zinc oxide (17) located on the layer comprising metal oxide and located below and directly in contact with the second IR reflection layer (19).
    [0008]
    8. Coated article according to claim 7, characterized in that no high dielectric index layer is located between the first IR reflection layer (9) and the glass substrate (1).
    [0009]
    9. Coated article according to claim 7 or 8, characterized in that the coated article measured monolithically has a visible reflectance on the glass side of 20 to 50%.
    [0010]
    10. Coated article according to claim 7 or 8, characterized in that the coated article measured monolithically has a visible reflectance on the glass side of 20 to 35%.
    [0011]
    11. Coated article according to claim 7 or 8, characterized in that the coated article measured monolithically has a visible reflectance on the glass side of 24 to 30%.
    [0012]
    Coated article according to any of claims 7 to 11, characterized in that the metallic absorption layer (4) has a thickness of 25 to 50 angstroms.
    [0013]
    13. Coated article according to any of claims 7 to 12, characterized in that the coated article is heat treated.
    [0014]
    14. Coated article according to any one of claims 7 to 13, characterized in that the coated article is thermally tempered and has a ΔE * value of the glass side reflectance of less than or equal to 4.5 due to the temper.
    [0015]
    Coated article according to any of claims 7 to 14, characterized in that the second layer comprising silicon nitride (14) is at least 50 angstroms thinner than the first layer comprising silicon nitride ( 3).
    [0016]
    16. Coated article according to any one of claims 7 to 14, characterized in that said metal oxide is tin oxide.
    [0017]
    17. Coated article according to any one of claims 7 to 16, characterized in that at least one said dielectric layer (23; 25) located on the second IR reflection layer (19) comprises a third layer comprising silicon nitride (25).
    [0018]
    18. Coated article according to any of claims 7 to 16, characterized in that the second layer comprising silicon nitride (14) is at least 100 angstroms thinner than the third layer comprising silicon nitride ( 25).
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    同族专利:
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    EP2766318A1|2014-08-20|
    PL2766318T3|2022-01-31|
    US20130094076A1|2013-04-18|
    US9079795B2|2015-07-14|
    JP2014533232A|2014-12-11|
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    US20160238760A1|2016-08-18|
    CN103958431A|2014-07-30|
    EP2766318B1|2021-10-27|
    WO2013055495A1|2013-04-18|
    US20140016190A1|2014-01-16|
    SA112330915B1|2015-07-22|
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    RU2014118757A|2015-11-20|
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    MX340550B|2016-07-14|
    KR20140088529A|2014-07-10|
    JP6178322B2|2017-08-09|
    CN103958431B|2017-09-08|
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    法律状态:
    2018-03-27| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-08-13| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2019-11-26| B25C| Requirement related to requested transfer of rights|Owner name: GUARDIAN INDUSTRIES CORP. (US) Free format text: A FIM DE ATENDER A TRANSFERENCIA REQUERIDA ATRAVES DA PETICAO NO 870190114546, DE08/11/2019, E NECESSARIO:1. APRESENTAR TRADUCAO JURAMENTADA DO DOCUMENTO QUE COMPROVA A TRANSFERENCIA SOLICITADA;2. QUE OS DOCUMENTOS ESTRANGEIROS ESTEJAM ACOMPANHADOS DA DEVIDA LEGALIZACAO CONSULAROU APOSTILADOS CONFORME A CONVENCAO DE HAIA;3. APRESENTAR GRU RELATIVA AO CUMPRIMENTO DA PRESENTE EXIGENCIA. |
    2020-03-10| B25A| Requested transfer of rights approved|Owner name: GUARDIAN GLASS, LLC (US) |
    2020-05-05| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2020-10-06| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-22| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 14/09/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/317,176|2011-10-12|
    US13/317,176|US8559100B2|2011-10-12|2011-10-12|Coated article with low-E coating having absorbing layer over functional layer designed to increase outside reflectance|
    PCT/US2012/055467|WO2013055495A1|2011-10-12|2012-09-14|Coated article with low-e coating having absorbing layer over functional layer designed to increase outside reflectance|
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