Method for manufacturing an illuminable laminated glazing for a vehicle, illuminable laminated glazing, and associated illuminable glazed assembly and vehicle
The manufacturing process for laminated glass uses a printed opaque coating and light redirection elements to address the visibility of unguided light rays, ensuring aesthetic and functional integrity without thickness increase, thus enhancing vehicle aesthetics and mechanical properties.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- SAINT GOBAIN SEKURIT FRANCE
- Filing Date
- 2025-11-27
- Publication Date
- 2026-06-04
AI Technical Summary
Existing laminated glass for vehicles, when illuminated, allows unguided light rays to be visible from outside, detracting from aesthetics due to insufficient opacity of the opaque element, and increasing thickness to enhance opacity degrades mechanical properties and non-stick properties.
A manufacturing process that includes printing an opaque coating on the internal surface of the opaque element or interlayer using liquid-based printing, such as inkjet, to achieve high opacity without increasing thickness, combined with a light redirection element and lamination interlayer to mask unguided light rays.
The process results in laminated glass that maintains aesthetic appearance when illuminated by masking unguided light rays, preserving mechanical properties and non-stick characteristics while being cost-effective and simple to implement.
Smart Images
Figure EP2025084573_04062026_PF_FP_ABST
Abstract
Description
DESCRIPTION TITLE: Manufacturing process for an illuminable laminated glass for a vehicle, illuminable laminated glass, illuminable glass assembly and associated vehicle
[0001] The present invention belongs to the general field of glass manufacturing.
[0002] It relates more specifically to a manufacturing process for illuminable laminated glazing for a vehicle, in particular for a motor vehicle, the illuminable laminated glazing being intended to be illuminated by at least one light source of an illumination device, the manufacturing process comprising the following steps: - supply of an external glass substrate having an external surface and an opposing internal surface, - provision of an internal glass substrate having an external surface and an opposing internal surface, the internal glass substrate being configured to define at least partially a propagation guide for light rays generated by the light source, - arrangement of an opaque element on at least part of a peripheral edge of the internal surface of the external glass substrate, the arranged opaque element having an external surface extending over said part of the peripheral edge of the internal surface of the external glass substrate and an opposing internal surface, the opaque element being, preferably, made of a mineral material, - provision of a lamination interlayer comprising at least one interlayer, - assembly of the external glass substrate on which the opaque element is arranged, the lamination interlayer and the internal glass substrate to each other so that the lamination interlayer extends between the internal surface of the external glass substrate and the external surface of the internal glass substrate.
[0003] The invention also relates to an illuminable laminated glazing for a vehicle, in particular for a motor vehicle, obtained by said manufacturing process.
[0004] The invention also relates to an illuminable glazed assembly comprising illuminable laminated glazing.
[0005] Finally, the invention relates to a vehicle comprising the illuminable laminated glazing or the illuminable glazing assembly.
[0006] The invention finds a particularly advantageous application when the laminated glass is used as a glass roof for a vehicle. However, this is not a limiting factor, and it is understood that the invention can be applied to other types of vehicle glass, such as a side window.
[0007] The illuminated laminated glass according to the invention is designed to be illuminated by a light source. Such laminated glass, when illuminated, essentially has a ambient lighting or signaling function. Typically, the light source used to implement such a lighting or signaling function comprises one or more lighting modules, each containing one or more light-emitting diodes (LEDs).
[0008] The opaque element of such laminated glazing, also called the "masking layer", allows, in particular, the concealment of the light source intended to illuminate the glazing, the high-intensity light rays injected into the light guide, the light rays not guided in the light guide, electrical connectors and / or mounting elements so that these elements are not visible from outside the vehicle when the laminated glazing is mounted on the vehicle.
[0009] Due to constraints related to the deposition process of the opaque element on the inner surface of the outer glass substrate, or due to the intrinsic properties of the opaque element itself—particularly when the opaque element is made of an enamel obtained from a composition of glass frit and pigments—such an opaque element is not sufficiently opaque when only a single layer of the material intended to form the opaque element is applied. This means that, when the laminated glass is illuminated, at least some of the light rays injected into the inner glass substrate opposite the opaque element (masking layer), which are not guided by the light guide, are visible to the naked eye from outside the vehicle. This can detract from the vehicle's aesthetics when the laminated glass is illuminated.
[0010] To obtain a more opaque element and thus block unguided light rays within the light guide, increasing the thickness of the opaque element is a known technique. Typically, such an opaque element is coated with a black ceramic material, such as black enamel. Therefore, one existing solution involves depositing at least two layers of enamel onto the initial glass substrate to increase the thickness of the opaque element. However, increasing the thickness of such an opaque enamel element can degrade the mechanical properties of the internal glass substrate onto which the opaque element is deposited.
[0011] Furthermore, when the opaque element is made of enamel, increasing the enamel thickness can degrade its non-stick properties. However, it is particularly advantageous for the enamel to possess non-stick properties during the bending of glass substrates to prevent any sticking between the two glass substrates or between one of the glass substrates and the bending tools.
[0012] One of the aims of the present invention is to overcome the above drawbacks by providing an improved and inexpensive manufacturing process for laminated glazing for a vehicle, particularly for a motor vehicle, which makes it possible to obtain glazing laminated glass presenting a satisfactory aesthetic appearance when the laminated glass is illuminated, and in particular which makes it possible to mask the light rays injected into the injection area when looking at the laminated glass with the naked eye from outside the vehicle.
[0013] To this end, the manufacturing process further includes a step of printing ink on at least a portion of the internal surface of the opaque element or on at least a portion of a surface of at least one interlayer to obtain a printed opaque coating extending at least partially opposite a portion of the opaque element, the printing step being carried out before the assembly step.
[0014] Thanks to the printing stage of the opaque coating, it is no longer necessary, as in the prior art, to increase the thickness of the opaque element so that high-intensity and / or unguided light rays are not visible to the naked eye from outside the vehicle when the laminated glass is illuminated. Furthermore, the manufacturing process for laminated glass is particularly simple. Indeed, thanks to the printing stage, the opaque coating is printed in situ onto the opaque element or onto at least one interlayer. Moreover, the manufacturing process is inexpensive.
[0015] According to other advantageous aspects of the invention, the manufacturing process comprises one or more of the following features, taken individually or in all technically possible combinations: - the printing of the ink during the printing stage is a liquid-based printing process. - Liquid printing includes inkjet printing, ink vapor printing, screen printing, pad printing, and flexographic printing. - the ink comprises an organic binder and pigments or dyes, advantageously black pigments or dyes, the organic binder being, preferably, a thermoplastic material such as polyvinyl butyral (PVB), polyethylene terephthalate (PET), thermoplastic polyurethane (TPU), or a crosslinkable material. - the printed opaque coating has, after ink solidification, an optical density greater than or equal to 2, preferably greater than or equal to 2.5 and even more preferably greater than or equal to 3. - the printed opaque coating has, after solidification, a thickness less than or equal to 100 micrometers, for example less than or equal to 20 micrometers. - the process includes, before the assembly stage, the arrangement of a light redirection element, in particular a prismatic film, on the external surface of the internal glass substrate or on an interlayer of the lamination interlayer, the printed opaque coating extending at least partially opposite the light redirection element. - at least one interlayer of the lamination interlayer comprises polyethylene terephthalate (PET), the PET interlayer being intended to extend away from an edge of the laminated glazing, in particular to a distance greater than or equal to one centimeter, the ink being printed during the printing step on at least a portion of a surface of at least one interlayer and being intended to extend away from the edge of the laminated glazing. - the step of supplying the lamination interlayer includes the supply of a set of functional interlayers comprising a functional interlayer, preferably a layer comprising liquid crystals, and at least two encapsulation interlayers encapsulating the functional interlayer, the ink being printed, during the printing step, preferably on at least a portion of a surface of one of the two encapsulation layers. - the step of supplying the lamination interlayer includes the supply of at least one outer interlayer, a support layer, an optical insulation coating extending over at least part of the support layer and an inner interlayer, the outer interlayer, the support layer, the optical insulation coating and the inner interlayer being intended to be stacked in that order from the outer glass substrate to the inner glass substrate in the glazing, the optical insulation coating having a refractive index strictly lower than the refractive index of the inner glass substrate and the refractive index of the or each inner interlayer, the ink being printed, during the printing step, on at least a portion of a surface of the support layer. - the ink is printed on at least a portion of the internal surface of the opaque element, the process further comprising a step of curving the external glass substrate on which the opaque element is arranged and the internal glass substrate, the step of printing the opaque coating being carried out after the step of curving the internal and external glass substrates. - the printed opaque coating is intended to extend in relation to at least one light source.
[0016] The invention also relates to an illuminable laminated glazing for a vehicle, in particular for a motor vehicle, obtained by a manufacturing process as described above, the illuminable laminated glazing being intended to be illuminated by at least one light source of an illumination device, the illuminable laminated glazing including: - an external glass substrate having an external surface and an opposing internal surface, - an internal glass substrate having an internal surface and an opposing external surface, the internal glass substrate being configured to define at least partially a propagation guide for light rays generated by the light source, - an opaque element arranged on at least part of a peripheral edge of the inner face of the external glass substrate, the opaque element having an external surface extending over said part of the peripheral edge of the inner face of the external glass substrate and an opposing internal surface, the opaque element being, preferably, made of a mineral material, - a lamination interlayer comprising at least one interlayer, the lamination interlayer extending between the internal surface of the external glass substrate on which the opaque element is arranged and the external surface of the internal glass substrate, - an opaque coating extending at least partly opposite a portion of the opaque element, the opaque coating being in an ink printed on a portion of the internal surface of the opaque element or on a portion of a surface of at least one interlayer.
[0017] The invention also relates to an illuminable glazed assembly for a vehicle, in particular for a motor vehicle, comprising an illuminable laminated glazing as defined above and an illumination device comprising at least one light source configured to generate light rays, at least part of which is intended to propagate into the internal glass substrate.
[0018] The invention also relates to a vehicle, in particular a motor vehicle, comprising the illuminable glazed assembly as described above or an illuminable laminated glazing as described above.
[0019] The features and advantages of the invention will become apparent from the following description, given by way of non-limiting example, and made with reference to the accompanying drawings, in which: - [Fig. 1], figure 1 is a schematic front view representation of the illuminateable glazed assembly according to a first embodiment of the invention: - [Fig 2], figure 2 is a schematic cross-sectional representation of the glazed assembly of figure 1 according to the cross-section plane ll-ll; - [fig. 3], figure 3 is an enlarged schematic representation of a portion of the glazed assembly of figure 2, identified by arrow III on figure 2; - [Fig 4], Figure 4 is a schematic representation of a manufacturing process for a illuminateable laminated glazing of the glazed assembly in figure 1; - [Fig. 5], figure 5 is a schematic cross-sectional representation of a portion of the glazed assembly according to the invention according to a variant of the first embodiment; - [Fig. 6], figure 6 is a schematic cross-sectional representation of a portion of the glazed assembly according to the invention in a second embodiment; - [Fig. 7], figure 7 is a schematic cross-sectional representation of a portion of the glazed assembly according to the invention according to a variant of the second embodiment; - [Fig. 8], Figure 8 is a schematic cross-sectional representation of a portion of the glazed assembly according to the invention in a third embodiment; and - [Fig. 9], figure 9 is a schematic cross-sectional representation of a portion of the glazed assembly according to the invention according to a variant of the third embodiment.
[0020] With reference to Figures 1 to 3, an illuminable glazed assembly 10, in other words, a lightable glazed assembly 10, according to a first embodiment of the invention, is described. The illuminable glazed assembly 10 is, for example, an illuminable glazed assembly 10 for a vehicle, such as a motor vehicle.
[0021] In the following description, the terms "internal" or "interior" and "external" or "exterior" are relative terms. The terms "internal" or "interior" refer to elements facing inward from the glazed assembly 10, that is, facing into the interior of a vehicle's passenger compartment when the glazed assembly 10 is mounted on the vehicle. The terms "exterior" or "exterior" refer to elements facing outward from the illuminable glazed assembly 10, that is, facing outward from the vehicle when the glazed assembly 10 is mounted on the vehicle.
[0022] The following description focuses more specifically on a motor vehicle such as a car, for example, an electric and / or autonomous car. The term "electric car" here refers to a car that has at least one electric motor and that, to move (i.e., to power said at least one electric motor), uses only the electrical energy stored in one or more batteries.
[0023] It is important to note, however, that the present invention is not limited to the case of an electric and / or autonomous car, and can relate indifferently to a hybrid car or even a car equipped solely with a combustion engine, the latter being autonomous or not.
[0024] More generally, the fact of considering a motor vehicle of the car type does not constitute a limitation of the invention, the latter remaining applicable to any type of motor vehicle, such as a truck, a bus, etc.
[0025] In the following description, refractive indices are defined for a reference wavelength value in the range of 500 nanometers (nm) to 600 nm, preferably equal to 550 nm.
[0026] The illuminable glazed assembly 10 includes an illuminable laminated glazing 12, hereinafter referred to as "glazing 12", and an illumination device 14 comprising at least one light source 16 intended to illuminate the glazing 12.
[0027] With reference to figure 1, the glazing 12 extends along a main extension direction identified by an axis E and noted hereafter as "extension direction E".
[0028] The main extension direction E corresponds, for example, to the direction given by the largest dimension of the glazing 12.
[0029] The main extension direction E corresponds, for example, to the direction separating the front and rear wheels of the vehicle when the glazed assembly 10 is mounted on the vehicle.
[0030] Alternatively, glazing 12 is a vehicle side window.
[0031] The glazing 12 is flat or curved.
[0032] In this example, the glazing 12 is a vehicle roof
[0033] In the present embodiment, as seen in figure 2, the glazing 12 is curved.
[0034] The glazing 12 has an external face 12A, an internal face 12B opposite the external face 12A and a slice 12C connecting the external face 12A and internal face 12B.
[0035] The direction separating the outer face 12A and the inner face 12B of the glazing 12 from each other is referred to hereafter as the "thickness direction".
[0036] At least part of the outer face 12A of the glazing 12 is intended to be in contact with an external environment of the vehicle when the glazing assembly 10 is mounted on the vehicle.
[0037] At least a portion of the inner face 12B of the glazing 12 is intended to delimit at least a portion of the vehicle's interior when the glazing assembly 10 is mounted on the vehicle. Furthermore, this portion of the inner face 12B of the glazing 12 is intended to be in contact with the vehicle's interior.
[0038] With reference to Figures 2 and 3, the glazing 12 comprises an external glass substrate 21, an internal glass substrate 22, for example means for extracting light 24, an opaque element 26, for example a reflective coating 28 for infrared (IR) light, a lamination interlayer 30, for example at least one light redirection element 32 and a printed opaque coating 34.
[0039] The external glass substrate 21 has an external surface 21A, an internal surface 21B opposite the external surface 21A and a slice 21C connecting the external and internal surfaces 21A, 21B.
[0040] The external surface 21 A of the external glass substrate 21 forms the external face 12A of the glazing 12.
[0041] Commonly, in the field of automotive glazing, the external surface 21A of the external glass substrate 21 is known as "face F1" and the internal surface 22B of the external glass substrate 21 is known as "face F2".
[0042] The external glass substrate 21 is transparent.
[0043] For example, the external glass substrate 21 is made of soda-lime glass, quartz glass, borosilicate glass, or aluminosilicate glass. In other examples, the external glass substrate 21 is made from rigid, transparent plastics, such as polycarbonate, polyethylene terephthalate (PET), or polymethyl methacrylate.
[0044] For example, the external glass substrate 21 is colorless.
[0045] Planilux® glass, marketed by the Applicant, will be used for an external transparent and colorless glass substrate 21.
[0046] Alternatively, the external glass substrate 21 is tinted.
[0047] For an external transparent and tinted glass substrate 21, Venus®, TSA3+ or TSA4+ glass, also marketed by the Applicant, will be advantageously used.
[0048] For example, the external glass substrate 21 has a thickness between 1.4 and 2.1 millimeters (mm).
[0049] The external glass substrate 21 has, for example, a refractive index between 1.51 and 1.52.
[0050] The internal glass substrate 22 has an external surface 22A, an internal surface 22B and a slice 22C connecting the external and internal surfaces 22A, 22B of the internal glass substrate 22.
[0051] The internal surface 22B of the internal glass substrate 22 forms the internal face 12B of the glazing 12.
[0052] The external surface 22A of the internal glass substrate 22 is turned towards the internal surface 21B of the external glass substrate 21.
[0053] Commonly, in the field of automotive glazing, the external surface 22A of the internal glass substrate 22 is known as the "F3 face" and the internal surface 22B of the external glass substrate 21 is known as the "face F4".
[0054] The internal glass substrate 22 is transparent.
[0055] For example, the internal glass substrate 22 is made of soda-lime glass, quartz glass, borosilicate glass, or aluminosilicate glass. In other examples, the internal glass substrate 22 is made from rigid, transparent plastics, such as polycarbonate, PET, or polymethyl methacrylate.
[0056] For example, the internal glass substrate 22 is colorless.
[0057] Planilux® glass, marketed by the Applicant, will be advantageously used for an internal transparent and colorless glass substrate 22.
[0058] The internal glass substrate 22 has, for example, a thickness of between 1.4 and 3.2 mm, preferably between 1.4 and 2.1 mm.
[0059] The internal glass substrate 22 has a refractive index between 1.51 and 1.52.
[0060] The internal glass substrate 22 defines at least in part a propagation guide for the light rays generated by at least one light source 16 of the illumination device 14 by reflection between said internal and external surfaces 22A, 22B of the internal glass substrate 22 until reaching the light extraction means 24.
[0061] The light extraction means 24 are arranged in the glazing 12 at predetermined locations so that the light rays propagating in the internal glass substrate 22 exit from it in the direction of the interior of the vehicle at said predetermined locations.
[0062] More specifically, said extraction means 24 are preferably diffusing coatings, for example opaque in color white or transparent, located at the external surface 22A of the internal substrate 22.
[0063] The diffusing coating may, for example, comprise an organic or mineral matrix, and diffusing particles, for example of metal oxide, such as TiO2.
[0064] Such a diffusing coating made of mineral material is, for example, described in document FR3084355 as transparent enamel.
[0065] Alternatively, such a diffusing coating made of mineral material is described for example in document WO 2022023638 as a transparent layer.
[0066] It should be noted that, for the sake of simplicity, two diffusing coatings are shown. However, there is no limit to the number of diffusing coatings that can be used as light extraction methods. This lack of limitation also applies to the nature of these diffusing coatings and their respective positions relative to the substrates. Glassmakers 21, 22, depending on whether it is desired to extract light into and / or out of the car. Generally speaking, these aspects are well known to those skilled in the art, and are therefore not described further here.
[0067] For example, as seen in Figures 2 and 3, the opaque element 26 is arranged on at least part of a peripheral edge of the internal surface 22B of the external glass substrate 21.
[0068] More specifically, the opaque element 26 is in contact with the internal surface 21 B of the external glass substrate 21. Here, "in contact" means direct contact.
[0069] Such an opaque element 26 is commonly called a "masking layer".
[0070] As can be seen in Figure 1, the opaque element 26 forms a peripheral frame and delimits a clear pane 36 of the glazing 12.
[0071] The opaque element 26 is made of a mineral material.
[0072] For example, opaque element 26 is an enamel, for example a black enamel.
[0073] The opaque element 26 has an external surface 26A and an internal surface 26B opposite to the external surface 26A.
[0074] The external surface 26A of the opaque element 26 is arranged in contact with the internal surface 21B of the external glass substrate 21.
[0075] In the present example, at least a portion of the opaque element 26 extends in relation to a light source 16 along the thickness direction so as to mask the light emitted by the corresponding light source.
[0076] In the specific example illustrated according to the first embodiment, the glazing 12 includes a reflective coating 28 infrared (IR) light covering at least a portion of the internal surface 21 B of the external substrate 21.
[0077] The reflective coating 28 extends directly into contact with the portion of the internal surface 21 B of the external glass substrate 21.
[0078] In particular, the reflective coating 28 extends over the portion of the internal surface 21 B of the external glass substrate 21 not coated by the opaque element 26.
[0079] Reflective coating 28 is transparent.
[0080] Reflective coating 28, for example, is single-layer. Alternatively, reflective coating 28 is multi-layer.
[0081] For example, the reflective coating 28 has an electrically conductive functional layer, for example, of transparent conductive oxide, in particular indium oxide known by the acronym "ITO" meaning "Indium Tin Oxide" in English.
[0082] According to a particular example, the reflective coating 28 preferably comprises a dielectric sublayer, in particular made of silicon oxynitride and preferably includes a dielectric overlayer, in particular of silicon oxynitride.
[0083] The lamination interlayer 30 comprises at least one interlayer 41.
[0084] The lamination interlayer 30 extends in a sandwich between the first and second glass substrates 21, 22.
[0085] The lamination interlayer 30 ensures adhesion between the external and internal glass substrates 21, 22.
[0086] As illustrated in Figure 3, in this example, the lamination interlayer 30 comprises a single interlayer 41. Alternatively, the lamination interlayer 30 comprises several layers.
[0087] The interlayer 41 may comprise any transparent polymer material commonly used for this purpose, for example polyvinyl butyral (PVB), thermoplastic polyurethane (TPU) or a copolymer of ethylene and vinyl acetate (EVA).
[0088] The intercalated layer 41 has, for example, a thickness of between 0.2 and 1.1 mm.
[0089] The intercalated layer 41 is, for example, colorless or tinted in sections or entirely.
[0090] For example, the interlayer 41 is made of a transparent polymer material.
[0091] In the specific example illustrated in Figure 3, the interlayer 41 is made of PVB.
[0092] PVB, for example, is a colorless PVB.
[0093] As can be seen in Figure 2, the glazing 12 comprises two light redirection elements 32. Only one redirection element 32 is visible in Figure 3.
[0094] Each redirection element 32 typically extends along the main extension direction E.
[0095] Each redirection element 32 has, for example, the shape of a strip.
[0096] Each redirection element 32 extends in relation to a light source 16 along the direction of thickness.
[0097] Each redirection element 32 extends into the vicinity of a corresponding portion of the slice 12C of the glazing 12.
[0098] In the example illustrated in Figure 3, each redirection element 32 is arranged on the external surface 22A of the internal glass substrate 22.
[0099] Each redirection element 32 is intended to inject at least a portion of the light rays generated by a respective light source 16 into the internal glass substrate 22.
[0100] Each light redirection element 32 is arranged opposite the opaque element 26 according to the thickness direction.
[0101] Each light redirection element 32 is arranged opposite the opaque coating 34 printed according to the thickness direction.
[0102] In the specific example shown, each redirection element 32 has a body, a light redirection face 32A, and an opposite face 32B to the redirection face 32A.
[0103] The body is transparent.
[0104] The body has a light transmission of at least 70%, preferably at least 80% and even more preferably at least 90%.
[0105] In the example illustrated in Figure 3, the redirection face 32A forms an external face of the redirection element 32.
[0106] The redirection face 32A is textured.
[0107] For example, redirection face 32A is fully textured. Alternatively, redirection face 32A is partially textured.
[0108] The redirection face 32A is delimited by prisms.
[0109] The redirection face 32A is a reflective face.
[0110] In this example, these prisms are reflective prisms.
[0111] According to a particular example, each redirection element 32 includes a reflective layer, for example metallic (for example by conformal deposition on the prismatic textured surface), defining the redirection face 32A.
[0112] The redirection face 32A is configured to reflect at least part of the light rays emitted by the light source 16.
[0113] The opposite face 32B forms an internal surface of the light redirection element 32.
[0114] The opposite face 32B is a flat face.
[0115] The opposite face 32B extends over the external surface 22A of the internal glass substrate 22.
[0116] In the present example, the opposite face 32B is in contact with said external surface 22A.
[0117] For example, the opposite face 32B is fixed by suction to the external surface 22A of the internal glass substrate 22.
[0118] Alternatively, the opposite face 32B is not directly in contact with the external surface 22A of the internal glass substrate 22. For example, the light redirecting element 32 is glued with a layer of adhesive to the external surface 22A of the internal glass substrate 22.
[0119] For example, each redirection element 32 is a flexible film that has the property of adapting to the curvature of the surface over which it is stretched.
[0120] For example, redirection element 32 is a prismatic film.
[0121] Such a prismatic film is, for example, a polymer prismatic film.
[0122] Such a light redirection element 32 is described for example in document WO 2022096365 as a prismatic film.
[0123] Alternatively, the light redirection element 32 is reversed and arranged on the internal surface 22B of the internal glass substrate 22. In such a case, the redirection face of the light redirection element is delimited by refracting prisms.
[0124] The printed opaque coating 34 extends at least partially opposite a portion of the opaque element 26 along the thickness direction.
[0125] In addition, as can be seen in Figure 3, the printed opaque coating 34 extends opposite each light source 16.
[0126] The printed opaque coating 34 is in an ink 44 printed on at least a portion of the internal surface 26B of the opaque element 26 or on at least a portion of a surface of at least one interlayer 41 of the lamination interlayer 30.
[0127] For example, the printed opaque coating 34 extends at a distance from the edge 12C of the glazing 12, in particular at a predetermined distance depending on the size of the glazing 12. For example, said distance is greater than or equal to 1 centimeter.
[0128] Alternatively, the opaque coating extends up to the edge 12C of the glazing 12.
[0129] As can be seen in Figure 3, the printed opaque coating 34 extends at least in front of each light source 16 so as to mask each light source 16 along the thickness direction.
[0130] Advantageously, the printed opaque coating 34 does not extend into the clear glass 36, also called "clear glass".
[0131] In the example illustrated in figures 1 and 2, the printed opaque coating 34 is in an ink 44 printed on a portion of the internal surface 26B of the opaque element 26.
[0132] In addition, the printed opaque coating 34 is in contact with the lamination interlayer 30.
[0133] More specifically, in this particular case, the printed opaque coating 34 is in contact with the interlayer 41 and in particular in contact with the external surface 41 A of the interlayer 41.
[0134] In particular, the printed opaque coating 34 extends in a sandwich between said portion of the internal surface 26B of the opaque element 26 and the lamination interlayer 30.
[0135] The printed opaque coating 34 has, after solidification of the ink 44, a thickness less than or equal to 100 micrometers in the thickness direction, preferably less than or equal to 20 micrometers.
[0136] The printed opaque coating 34 has, after solidification of the ink 44, an optical density greater than or equal to 2, preferably greater than or equal to 2.5 and even more preferably greater than or equal to 3.
[0137] Optical density is classically measured by a transmission densitometer (e.g. Xrite 331).
[0138] As can be seen in Figures 1 and 2, the illumination device 14 comprises two light sources 16. Only one of the two light sources 16 is visible in Figure 3.
[0139] Each light source 16 generally extends along the main extension E.
[0140] Each light source 16 has a principal direction of illumination oriented towards the internal surface 22B of the internal glass substrate 22 and is substantially perpendicular to said internal surface 22B.
[0141] In this configuration, at least part of the light generated by each light source 16 is incident on said internal surface 22B of the internal glass substrate 22 so as to pass through the internal glass substrate 22 and leave at its external surface 22A.
[0142] The direction of illumination of each light source 16 is oriented towards a respective redirection element 32.
[0143] Each light source 16 comprises one or more lighting modules.
[0144] Each lighting module contains one or more light-emitting diodes, also known as LEDs (light-emitting diodes). LEDs can be front-emitting or side-emitting.
[0145] Each lighting module includes, for example, a plurality of LED diodes and includes a support with electroconductive tracks, such as a printed circuit board (PCB), for example a rectangular support, on which the LED diode is mounted.
[0146] The manufacturing process for the illuminateable glazed assembly 10 is described below with reference to Figure 4.
[0147] The manufacturing process of the illuminateable glazed assembly 10 includes the manufacture of the illuminateable glazing 12 and then the assembly of the glazing 12 made with the illumination device 14.
[0148] The manufacturing of glazing 12 is described with reference to figure 4.
[0149] The production of the glazing 12 includes a step E1 (not shown in figure 4) of supplying the assembly formed by the external glass substrate 21 and the reflective coating 28.
[0150] In said supplied assembly, the reflective coating 28 extends over the internal surface 21 B of the external glass substrate 21.
[0151] The manufacturing process includes a step E2 (not shown in figure 4) of supplying the internal glass substrate 22.
[0152] The manufacturing process for the glazing 12 includes a step E3 (not shown in Figure 4) of supplying the lamination interlayer 30 comprising the interlayer layer 41.
[0153] The interlayer 41 provided is, in this particular example, in the form of a sheet of PVB.
[0154] The manufacturing process of the glazing 12 includes a step E4 (not shown in figure 4) of arranging the opaque element 26 at the peripheral edge of the internal surface 21 B external glass substrate 21 on the reflective coating 28.
[0155] For example, the material to form the opaque element 26 is deposited on the peripheral edge of the external glass substrate 21. Then, during the firing or pre-firing of this deposited material, said material is able to dissolve the reflective coating 28 to fix directly onto the external glass substrate 21 and thus form the opaque element 26.
[0156] The arrangement of such an opaque element 26 is well known to the person skilled in the art, so the details of this arrangement are not described further here.
[0157] As can be seen in Figure 4, the manufacturing process for the glazing 12 includes a bending step E5 during which the external glass substrate 21 provided with the reflective coating 28 and the opaque element 26, and the internal glass substrate 22 are bent in a bending station 43. The bending station 43 is schematically represented by dashed lines in Figure 4.
[0158] The doming is a classic and well-known step for those in the trade, so this step is not described in more detail here.
[0159] As can be seen in Figure 4, the manufacturing process of the glazing 12 further includes a printing step E6 of an ink 44 on the interlayer 41 of the laminated interlayer 30 supplied to obtain the printed opaque coating 34 intended to extend at least in part opposite a portion of the opaque element 26 in the thickness direction.
[0160] The ink 44 is printed on the face of the supplied interlayer 41 intended to form the outer face 41 A of the interlayer 41.
[0161] Thus, in this example, ink 44 is printed on the PVB sheet forming the interlayer layer 41.
[0162] The ink printing step 44 to form the printed opaque coating 34 is carried out before or after the bombé step.
[0163] Ink 44 printing is a liquid-based printing process.
[0164] The chosen ink 44 has properties suitable for such liquid-based printing.
[0165] During printing, the ink 44 is liquid.
[0166] In particular, the chosen ink 44 has a viscosity suitable for liquid printing.
[0167] Advantageously, liquid-based printing is inkjet printing.
[0168] In the specific example described with reference to Figure 4, the opaque coating 34 is obtained by inkjet printing of ink 44.
[0169] Such inkjet printing is, for example, produced by an inkjet printer.
[0170] For inkjet printing, the position of each droplet printed on the substrate—in this case, the supplied interlayer 41—is controlled by a computer, which in turn drives a print head, according to a predefined pattern stored in the computer as a computer file. This computer file specifies the position of each ink droplet on the supplied interlayer 41, corresponding to a pixel in the file containing the pattern.
[0171] For inkjet printing, the viscosity of ink 44 at the printing temperature is, for example, between 5 mPa.s and 15 mPa.s.
[0172] In the case of inkjet printing, the ink particles have a size of less than 1 pm.
[0173] Ink 44 includes, for example, an organic binder and pigments or dyes in the organic binder.
[0174] The organic binder has adhesive properties so that it adheres to the element on which it is printed.
[0175] Advantageously the organic binder has adhesive properties so as to adhere to the surface of the intercalated layer 41.
[0176] The organic binder is at least one material chosen from the following list of materials: a thermoplastic material such as PVB, PET, thermoplastic polyurethane (TPU) or a crosslinkable material, in particular UV.
[0177] In this particular case, the organic binder is a crosslinkable material. For example, the organic binder is an acrylate.
[0178] Alternatively, the organic binder of the ink 44 is made of a material of the same nature as that of the interlayer 41 on which the ink 44 is deposited. Thus, for example, the organic binder is made of PVB.
[0179] Pigments or dyes give opaque priority to the opaque coating 34 obtained by printing the printed ink 44.
[0180] Pigments are elements that do not dissolve in the organic binder and are dispersed within it.
[0181] Dyes are elements dissolved in the organic binder.
[0182] Pigments or dyes are preferably inorganic.
[0183] Pigments or dyes are advantageously black in color.
[0184] In this example, ink 44 includes black pigments.
[0185] As can be seen in Figure 4, the manufacturing process for the glazing 12 includes a step E7 of solidification of the ink 44.
[0186] The printed ink 44 is solidified by crosslinking during step E7 in a crosslinking station 45.
[0187] In this example, the ink 44 is solidified by crosslinking in the crosslinking station 45 by exposure to UV radiation.
[0188] Alternatively, depending on the material composing the ink 44, the ink 44 is crosslinked by exposure to a heat source to form the opaque coating 34.
[0189] The printed opaque coating 34 has, after solidification of the ink 44, an optical density greater than or equal to 2, preferably greater than or equal to 2.5 and even more preferably greater than or equal to 3.
[0190] Alternatively, liquid printing is ink vapor printing also known as "spray" printing, screen printing, pad printing or flexographic printing.
[0191] As can be seen in Figure 4, the light extraction means 24 and redirection elements 32 are arranged on the external face 22A of the internal glass substrate 22 during step E8 of the process.
[0192] The light redirection elements 32 are arranged on the external face 22A of the internal glass substrate 22.
[0193] The manufacturing process for the illuminable glazing 12 then comprises an assembly step E9 of the external glass substrate 21 provided with the opaque element 26 and the reflective coating 28, the lamination interlayer 30 provided with the printed opaque coating 34, and the internal glass substrate 22 provided with the extraction means 24 and the redirection elements 32, so that the lamination interlayer 30 extends between the internal surface 21 B of the external glass substrate 21 and the external surface 22A of the internal glass substrate 22. This step E5 is also commonly known as the lamination step.
[0194] At the end of the lamination stage, the external glass substrate 21 and the internal glass substrate 22 are joined together by means of the lamination interlayer 30.
[0195] More specifically, the assembly includes an assembly substep as such of assembling the external glass substrate 21 provided with the opaque element 26 and the printed opaque coating 34, the lamination interlayer 30 and the internal glass substrate 22 provided with the extraction means 24 and the redirection elements 32 to each other to form a stacked sub-assembly and a substep of passing the stacked sub-assembly to the autoclave 46, as seen in Figure 4.
[0196] Passing through the autoclave 46 softens the lamination interlayer 30 so as to allow the glass substrates 21, 22 to adhere to each other.
[0197] The glazing unit 12 is obtained at the end of the assembly stage.
[0198] In operation of the illuminable glazed assembly 10, the light emitted by each light source 16 is emitted in a direction perpendicular to the internal surface 22B of the internal glass substrate 22. The light injected into the internal glass substrate 22 enters through the internal surface 22B of the internal glass substrate 22 and exits through the external surface 22A of the internal glass substrate 22.
[0199] Then the light enters each redirection element 32 and is reflected by the redirection face 32A of that redirection element 32. The light redirected by the redirection face 3A of the redirection element 32 is injected into the internal glass substrate 22.
[0200] At least part of the light reflected by the redirecting element 32 is propagated by total internal reflection in the internal glass substrate 22 and, more particularly, in this example, on the internal and external surfaces 22A, 22B of the internal glass substrate 22 until it reaches the light extraction means 24 to be transmitted into the interior of the vehicle on which the glazed assembly 10 is mounted.
[0201] Thanks to the printing deposition of the opaque coating 34, an illuminable laminated glazing 12 with a satisfactory aesthetic appearance is obtained when the laminated glazing 12 is illuminated.
[0202] A variant of the glazed assembly 10 is described with reference to figure 5
[0203] In this variant, the glazing 12 does not include a light redirection element 32.
[0204] Each light source 16 has a principal direction of illumination oriented towards a portion of slice 22C of the internal glass substrate 22.
[0205] An illuminable glazed assembly 110 according to a second embodiment is described with reference to figure 6. The illuminable glazed assembly 110 according to the second embodiment is described only by difference to the glazed assembly 10 of the first embodiment.
[0206] The glazed assembly 110 according to the second embodiment differs from the glazed assembly 10 according to the first embodiment by the glazing 112 and, more particularly, by the laminated interlayer 130 and the printed opaque coating 134.
[0207] As in the first embodiment, the glazing 112 includes the external glass substrate 21, the internal glass substrate 22, the extraction means 24, the opaque element 26.
[0208] As shown in Figure 5, the 130 laminate interlayer comprises a plurality of stacked interlayer layers.
[0209] The plurality of interlayers includes from the outside to the inside of the glazing 112 an external interlayer 151, a support layer 152 of an optical insulation coating, an optical insulation coating 153 and an internal interlayer 154.
[0210] The outer interlayer 151 extends between the outer glass sheet 21 and the support layer 152.
[0211] More specifically, the external surface 151 of the external interlayer 151 is in contact with the opaque element 26 and with the reflective coating 28. The internal surface 151 is in contact with the support layer 152.
[0212] The outer intercalated layer 151 is transparent.
[0213] For example, the outer interlayer 151 is tinted.
[0214] For example, the outer interlayer 151 is tinted grey.
[0215] For example, the transparent outer interlayer 151, which has a grey colour, has a light transmission of 27%.
[0216] The outer interlayer 151 is a thermoplastic material.
[0217] In this example, the outer interlayer 151 is made of PVB, for example a tinted PVB, in particular grey.
[0218] For example, the outer interlayer 131 in tinted PVB has a refractive index of 1.485.
[0219] The outer interlayer 151 has a thickness greater than or equal to 0.38 mm and less than or equal to 0.76 mm.
[0220] The support layer 152 is transparent.
[0221] Support layer 152 is uncolored.
[0222] The support layer 152, for example, has a light transmission greater than or equal to 90%.
[0223] For example, the support layer 152 is made of a polymer, thermoplastic or crosslinked polymer, in particular polyester, polyethylene terephthalate (PET), poly(butylene terephthalate) (PBT), poly(ethylene naphthalate) (PEN), or polyacrylate, polybutylacrylate, polymethacrylate.
[0224] For example, the transparent and uncolored support layer 152 is a PET sheet.
[0225] The thickness of the support layer 152 is greater than or equal to less than 25 micrometers and less than or equal to 200 micrometers, advantageously greater than or equal to 100 micrometers.
[0226] As can be seen in Figure 6, the support layer 152 extends at a distance from the edge 12C of the glazing 12. This distance is predetermined and depends on the size of the glazing. The distance is, for example, greater than or equal to one centimeter.
[0227] The optical insulation coating 153 extends between the support layer 152 and the internal interlayer layer 154.
[0228] Optical insulation coating 153 is transparent.
[0229] Optical insulation coating 153 is, for example, a polymer film.
[0230] The optical insulation coating 153 has a refractive index strictly lower than the refractive index of the internal interlayer 154 and the refractive index of the internal glass substrate 22.
[0231] The internal interlayer 154 extends between the assembly formed by the optical insulation coating 153 and the printed opaque coating 134, and the internal glass substrate 22.
[0232] For example, the inner interlayer 154 is made of PVB.
[0233] Alternatively, the internal interlayer 154 is made of TPU or EVA.
[0234] According to a specific example, PVB includes plasticizers in a proportion of 30% by weight.
[0235] As an illustration, the inner interlayer 154 is colorless PVB and has a light transmission of 99.9%.
[0236] The internal intercalated layer 154 has a thickness greater than 0.38 mm and less than or equal to 0.76 mm.
[0237] The printed opaque coating 134 extends over the internal surface 152B of the support layer 152 and extends opposite at least a portion of the opaque element 26 in the thickness direction.
[0238] The printed opaque coating 134 extends at a distance from the edge of the glazing 112
[0239] In addition, as can be seen in Figure 6, the printed opaque coating 134 includes at least one portion extending opposite each of the light redirection elements 32 in the thickness direction.
[0240] For example, ink 44 includes an organic PVB binder and black pigments.
[0241] Furthermore, as in the first embodiment described opposite Figures 1 to 3, the illumination device 14 comprises light sources 16 having an illumination direction oriented perpendicular to the inner face 22B of the internal glass substrate 22 and arranged opposite a respective redirection element 32.
[0242] The manufacturing process of the glazed assembly 110 is described solely by difference from the manufacturing process of the glazed assembly 10 according to the first embodiment.
[0243] The manufacturing process of the glazed assembly 110 according to the second embodiment differs from the manufacturing process of the glazed assembly 10 according to the first embodiment by the production of the glazing 112. The manufacturing process of the glazing 112 according to the second embodiment is described only by difference from the manufacturing process of the glazing 12 according to the first embodiment.
[0244] The manufacturing process of glazing 112 according to the second embodiment differs from the manufacturing process of glazing 12 in that the step of supplying the lamination interlayer includes the supply of the outer interlayer layer 151, the support layer 152 comprising the optical insulation coating 153 and the inner interlayer layer 154.
[0245] During the supply stage, the outer interlayer 151, the support layer 152 including the optical insulation coating 153 and the inner interlayer 154 are in the form of sheets.
[0246] Furthermore, the manufacturing process of the glazing 112 according to the second manufacturing method differs from the manufacturing process of the glazing 12 according to the first embodiment in that, during the printing step, the ink 44 is printed on a portion of the surface of the support layer 152 intended to form the internal surface 152B of the support layer 152.
[0247] The ink 44 is printed on said portion of the surface of the support layer 152 to obtain an opaque coating 134 extending at a distance from an edge of the glazing 112, in particular at a distance greater than or equal to 1 centimeter.
[0248] The printing stage is inkjet printing.
[0249] The printing stage is carried out before the assembly stage.
[0250] Furthermore, the printing stage can be carried out before or after the bombing stage.
[0251] A variant of the glazed assembly 110 is described with reference to figure 7
[0252] In this variant, the glazing 112 does not include a light redirection element 32.
[0253] Each light source 16 has a principal direction of illumination oriented towards a portion of the slice of the internal glass substrate 22.
[0254] An illuminable glazed assembly 210 according to a third embodiment is described with reference to figure 8. The illuminable glazed assembly 210 according to the third embodiment is described only by difference from the glazed assembly 110 of the second embodiment.
[0255] The glazed assembly 210 according to the third embodiment differs from the glazed assembly 110 according to the second embodiment by the lamination interlayer 230 and by the printed opaque coating 234.
[0256] The lamination interlayer 230 comprises, from the outside in, an outer interlayer layer 251, a set of functional interlayer layers 255 and an inner interlayer layer 254.
[0257] The outer interlayer 251 is of the same nature as the outer interlayer 151 of the second embodiment.
[0258] The functional interlayer set 255, schematically represented in Figure 8, comprises at least one functional interlayer including, for example, liquid crystals, and at least two encapsulating interlayers encapsulating the functional interlayer.
[0259] The functional interlayer assembly 255 forms, for example, at least in part, an electrically controllable device, notably with diffusion and / or variable hue. Examples include suspended particle devices (SPDs), polymer-dispersed liquid-crystal displays (PDLCs), and electrochromic devices.
[0260] In the particular example described here, the functional interlayer comprises, for example, a polymer matrix and liquid crystals embedded in the polymer matrix.
[0261] The encapsulation interlayers form support layers for the functional interlayer.
[0262] The encapsulation layers are, for example, made of polymer, for example PET.
[0263] For example, each encapsulation layer is coated with an electroconductive coating.
[0264] The internal intercalated layer 254 is of the same nature as the internal intercalated layer 154 described with reference to the second embodiment.
[0265] The printed opaque coating 234 extends over the external surface 255A of the functional interlayer assembly 255.
[0266] At least part of the printed opaque coating 234 extends opposite the opaque element 26 in the thickness direction.
[0267] At least part of the printed opaque coating 234 extends opposite each light redirection element 32 along the thickness direction.
[0268] The manufacturing process of the glazed assembly 210 according to the third embodiment differs from the manufacturing process of the glazed assembly 110 according to the second embodiment by the production of the glazing 212. The manufacturing process of the glazing 212 according to the third embodiment is described only by difference from the manufacturing process of the glazing 112 according to the second embodiment.
[0269] Thus, the manufacturing process of glazing 212 according to the third embodiment differs from the manufacturing process of glazing 112 according to the second embodiment in that during the step of supplying the lamination interlayer, the outer interlayer layer 251, the set of functional interlayer layers 255 and the inner interlayer layer 254 are supplied.
[0270] The manufacturing process of the glazing 212 according to the third embodiment differs, moreover, from the manufacturing process of the glazing 112 according to the second embodiment in the printing step, the ink 44 is printed on a portion of the surface of the interlayer assembly 255 intended to form the external surface 255A of the functional interlayer assembly 255.
[0271] For example, ink 44 is printed on a portion of a surface of one of the two encapsulation layers, for example intended to form an external surface 255A of the functional interlayer assembly 255.
[0272] A variant of the glazed assembly 210 is described with reference to figure 9.
[0273] In this variant, the glazing 212 does not include a light redirection element 32.
[0274] Each light source 16 has a principal direction of illumination oriented towards a portion of the slice of the internal glass substrate 22.
[0275] An illuminable glazed assembly according to a fourth embodiment, not shown, is described in the following solely by difference to the glazed assembly 10 of the first embodiment.
[0276] In this embodiment, the opaque coating is printed on a portion of the internal surface of the opaque element 26.
[0277] During the glazing manufacturing process, the ink 44 is printed onto the opaque element 26 after the curving step.
[0278] In addition, during the printing stage, ink 44 is, for example, printed by ink vaporization.
Claims
DEMANDS
1. A method for manufacturing an illuminable laminated glazing (12; 112; 212) for a vehicle, in particular for a motor vehicle, the illuminable laminated glazing (12; 112; 212) being intended to be illuminated by at least one light source (16) of an illumination device (14), the manufacturing method comprising the following steps: - supply (E1) of an external glass substrate (21) having an external surface (21 A) and an opposing internal surface (21 B, - supply (E2) of an internal glass substrate (22) having an external surface (22A) and an opposing internal surface (22B), the internal glass substrate (22) being configured to define at least in part a propagation guide for light rays generated by the light source (16), - arrangement of an opaque element (26) on at least a part of a peripheral edge of the inner surface (21 B) of the external glass substrate (21), the arranged opaque element (26) having an outer surface (26 A) extending over said part of the peripheral edge of the inner surface (21 B) of the external glass substrate (21 A) and an opposite inner surface (21 B), the opaque element (26) preferably being made of a mineral material, - supply (E6) of a lamination interlayer (30; 130; 230) comprising at least one interlayer (41; 151-155; 251, 254, 255), - assembly (E9) of the external glass substrate (21) on which the opaque element (26) is arranged, the lamination interlayer (30; 130; 230) and the internal glass substrate (22) to each other such that the lamination interlayer (30; 130; 230) extends between the internal surface (21B) of the external glass substrate (21) and the external surface (22A) of the internal glass substrate (22), characterized in that the manufacturing process further comprises a step of printing an ink (44) on at least a portion of the internal surface (26B) of the opaque element (26) or on at least a portion of a surface (152B; 255A) of at least one interlayer (41; 152; 255) to obtain an opaque coating (34; 134 ; 234) printed extending at least partly opposite a portion of the opaque element (26), the printing step (E6) being carried out before the assembly step (E9).
2. A manufacturing method according to claim 1, wherein the printing of the ink (44) during the printing step is a liquid-based printing.
3. A manufacturing method according to claim 2, wherein the liquid printing is inkjet printing, ink spray printing, screen printing, pad printing or flexographic printing.
4. A manufacturing method according to any one of the preceding claims, wherein the ink (44) comprises an organic binder and pigments or dyes, advantageously black pigments or dyes, the organic binder being, preferably, a thermoplastic material such as polyvinyl butyral (PVB), polyethylene terephthalate (PET), thermoplastic polyurethane (TPU), or a crosslinkable material.
5. A manufacturing method according to any one of the preceding claims, wherein the printed opaque coating (34; 134; 234) has, after solidification of the ink (44), an optical density greater than or equal to 2, preferably greater than or equal to 2.5 and even more preferably greater than or equal to 3.
6. A manufacturing method according to any one of the preceding claims, wherein the printed opaque coating (34; 134; 234) has, after solidification, a thickness less than or equal to 100 micrometers, for example less than or equal to 20 micrometers.
7. A manufacturing method according to any one of the preceding claims, comprising prior to the assembly step, the arrangement of a light redirection element (32), in particular a prismatic film, on the external surface (22A) of the internal glass substrate (22) or on an interlayer of the lamination interlayer (30), the printed opaque coating (134; 234) extending at least partially opposite the light redirection element (32).
8. A manufacturing method according to any one of the preceding claims, wherein at least one interlayer (152) of the lamination interlayer (130) comprises polyethylene terephthalate (PET), the PET interlayer being intended to extend at a distance from a slice (12C) of the laminated glazing (110), in particular at a distance greater than or equal to one centimeter, the ink (44) being printed during the printing step onto at least a portion of a surface (152B; 255A) of at least one interlayer (152; 255) and intended to extend at a distance from the edge (12C) of the laminated glazing (12; 112; 212).
9. A manufacturing method according to any one of the preceding claims, wherein the step of supplying the laminating interlayer (230) comprises supplying a set of functional interlayer layers (255) comprising a functional interlayer layer, preferably a layer comprising liquid crystals, and at least two encapsulating interlayer layers encapsulating the functional interlayer layer, the ink (44) being printed, during the printing step, preferably on at least a portion of a surface of one of the two encapsulating layers (255).
10. A manufacturing method according to any one of claims 1 to 8, wherein the step of supplying the laminating interlayer (130) comprises supplying at least one outer interlayer (151), a support layer (152), an optical insulation coating (153) extending over at least a portion of the support layer (152), and an inner interlayer (154), the outer interlayer (151), the support layer (152), the optical insulation coating (153), and the inner interlayer (154) being intended to be stacked in that order from the outer glass substrate (21) to the inner glass substrate (22) in the glazing (12), the optical insulation coating (153) having a refractive index strictly lower than the refractive index of the inner glass substrate (22) and the refractive index of the layer(s). internal interleaf (154), the ink (44) being printed, during the printing step,on at least a portion of a surface (152B) of the support layer (152).
11. A manufacturing method according to any one of claims 1 to 7, wherein the ink (44) is printed on at least a portion of the internal surface (26B) of the opaque element (26), the method further comprising a step of curving (E5) the external glass substrate (21) on which the opaque element (26) is arranged and the internal glass substrate (22), the step of printing the opaque coating (34) being carried out after the step of curving (E5) the internal and external glass substrates (21, 22).
12. Illuminatable laminated glazing (12; 112; 212) for a vehicle, in particular for a motor vehicle, obtained by a manufacturing process according to any one of claims 1 to 11, the illuminable laminated glazing (12; 112; 212) being intended to be illuminated by at least one light source (16) of an illumination device (14), the illuminateable laminated glazing (12; 112; 212) comprising: - an external glass substrate (21) having an external surface (21 A) and an opposing internal surface (21 B, - an internal glass substrate (22) having an internal surface (22B) and an opposing external surface (22A), the internal glass substrate (22) being configured to define at least in part a propagation guide for light rays generated by the light source (16), - an opaque element (26) arranged on at least a part of a peripheral edge of the inner face (21B) of the external glass substrate (21), the opaque element (26) having an external surface (26A) extending over said part of the peripheral edge of the inner face (21B) of the external glass substrate (21) and an opposing internal surface (26B), the opaque element (26) preferably being made of a mineral material, - a lamination interlayer (30; 130; 230) comprising at least one interlayer (41; 151-155; 251, 254, 255), the lamination interlayer (30; 130; 230) extending between the internal surface (21B) of the external glass substrate (21) on which the opaque element (26) is arranged and the external surface (22A) of the internal glass substrate (22), - an opaque coating (34; 134; 234) extending at least partly opposite a portion of the opaque element (26), characterized in that the opaque coating (34; 134; 234) is in an ink (44) printed on a portion of the internal surface (26B) of the opaque element (26) or on a portion of a surface (152B; 255A) of at least one interlayer (41; 152; 255).
13. Illuminatable glazed assembly (10; 110; 210) for a vehicle, in particular for a motor vehicle, comprising an illuminable laminated glazing (12; 112; 212) according to claim 12 and an illumination device (14) comprising at least one light source (16) configured to generate light rays, at least a portion of which is intended to propagate into the internal glass substrate (22).
14. Vehicle, in particular motor vehicle, comprising an illuminable laminated glazing (12; 112; 212) according to claim 12 or the illuminable glazing assembly (10; 110; 210) according to claim 13.