Vehicle-grade durable glass

Abstract

A multilayer glass laminate for a vehicle windshield having improved durability is described. The multilayer glass laminate includes an exterior-facing glass ply, an interior-facing glass ply, and an adhesive interlayer positioned between the exterior-facing glass ply and the interior-facing glass ply. The exterior-facing glass ply includes a borosilicate. A method for making the multilayer glass laminate is also described.

Description

[Technical Field]

[0001] This disclosure relates to a vehicle windshield. More specifically, this disclosure relates to a multilayer glass laminate structure for a vehicle windshield with improved durability. [Background technology]

[0002] Automobiles and other vehicles generally use durable glass for various components such as front, side, rear, and roof windows or windshields, headlights, and other vehicle components. Such glass components can be subjected to external forces, and if these forces are sufficiently high, they can cause chipping, cracking, or other damage to the glass. [Overview of the Initiative]

[0003] For the purpose of summarizing the advantages of this disclosure and the prior art, specific purposes and advantages of this disclosure are described herein. Not all such purposes or advantages can be achieved in any particular embodiment. Therefore, as will be apparent to those skilled in the art, for example, the invention can be embodied or practiced in a manner that achieves or optimizes one or more of the advantages taught herein without necessarily achieving other purposes or advantages that can be taught or suggested herein.

[0004] All of these embodiments are intended to be within the scope of the invention disclosed herein. These and other embodiments will be readily apparent to those skilled in the art from the following detailed description of preferred embodiments related to the accompanying drawings, and the invention is not limited to any particular preferred embodiment disclosed.

[0005] In one embodiment, a vehicle glass structure includes a durable glass laminate. The laminate includes three layers: an outer (i.e., outward-facing) layer, an inner (i.e., inward-facing) layer, and an adhesive intermediate layer between the outer and inner layers. The outer layer includes non-soda-lime, low-CTE, high-density glass. In some embodiments, the outer layer is about 2 mm to about 5 mm thick. The inner layer includes a thin, chemically strengthened glass with high strength and flexibility. In some embodiments, the inner layer is about 0.5 mm to about 1.1 mm thick. The adhesive intermediate layer material has energy absorption properties and a glass transition temperature outside the range of normal operating conditions. The materials of the layers of the laminate can be adjusted for desired durability.

[0006] In one embodiment, a multilayer glass laminate for a vehicle windshield is described. The multilayer glass laminate includes an externally facing glass layer containing a borosilicate, an internally facing glass layer, and an adhesive intermediate layer positioned between the externally facing glass layer and the internally facing glass layer, the adhesive intermediate layer comprising an adhesive, and the multilayer glass laminate is a vehicle windshield and is molded to fit into a vehicle windshield frame.

[0007] In some embodiments, the multilayer glass laminate weighs approximately 7.5 kg / m². 2 ~about 10kg / m 2 It has a surface density of . In some embodiments, the multilayer glass laminate has a maximum breakability of 10% in an impact of 2J. In some embodiments, the vehicle windshield is selected from a group consisting of a front windshield, side windshields, rear windshields, top windshields, and combinations thereof.

[0008] In some embodiments, the exterior-facing glass layer has a maximum breakability of 10% under an impact of 2J. In some embodiments, the exterior-facing glass layer has a thickness of approximately 2mm to approximately 5mm. In some embodiments, the exterior-facing glass layer is the outermost layer of a multilayer glass laminate. In some embodiments, the exterior-facing glass layer is shatterproof or shatterproof. In some embodiments, the exterior-facing glass layer is resistant to crack initiation and crack propagation. In some embodiments, the exterior-facing glass layer does not contain soda-lime glass.

[0009] In some embodiments, the inward-facing glass layer comprises a material selected from the group consisting of aluminosilicate, tempered glass, and combinations thereof. In some embodiments, the inward-facing glass layer has a thickness of about 0.5 mm to about 1.1 mm. In some embodiments, the inward-facing glass layer is the outermost layer of the multilayer glass laminate. In some embodiments, the thickness ratio of the outward-facing glass layer to the inward-facing glass layer is greater than 1:1. In some embodiments, the thickness ratio of the outward-facing glass layer to the inward-facing glass layer is greater than 1:1 and less than or equal to about 10:1.

[0010] In some embodiments, the adhesive interlayer has energy absorption properties. In some embodiments, the adhesive interlayer has a glass transition temperature of about 6°C to about 10°C. In some embodiments, the adhesive interlayer comprises multiple layers. In some embodiments, the adhesive contains polyvinyl ether (PVE).

[0011] In some embodiments, the multilayer glass laminate further comprises at least one further layer, the at least one further layer selected from the group consisting of a light-absorbing layer, a light-reflecting layer, an acoustic-attenuating layer, and combinations thereof. In some embodiments, at least one further layer comprises a light-absorbing layer, and the light-absorbing layer comprises a coloring material. In some embodiments, the multilayer glass laminate further comprises elements selected from the group consisting of a camera, a sensor, a heating element, a waveguide, an incoupling optical element, an outcoupling optical element, a light emission device, and combinations thereof. In some embodiments, the vehicle windshield has a curved shape. In some embodiments, the vehicle windshield is configured to break into small pieces.

[0012] In other embodiments, a vehicle comprising a vehicle frame and a multilayer glass laminate is described. In some embodiments, the vehicle further comprises an electric motor. In some embodiments, the vehicle further comprises a camera positioned opposite a glass layer facing the interior of the multilayer glass laminate. In some embodiments, the multilayer glass laminate further comprises a camera field of view area, and the camera is positioned to view through the camera field of view area of ​​the multilayer glass laminate, and the camera field of view area has optical distortion of less than about 250 millidiopters.

[0013] In other embodiments, a method for producing a multilayer glass laminate is described. The method includes the steps of forming an externally facing glass layer containing a borosilicate, forming an internally facing glass layer, forming an adhesive intermediate layer comprising an adhesive, and positioning the adhesive intermediate layer between the externally facing glass layer and the internally facing glass layer to form a multilayer glass laminate. [Brief explanation of the drawing]

[0014] [Figure 1] This illustrates the chemical steps involved in the siloxane bond breakdown process, a mechanism that can occur in glass materials.

[0015] [Figure 2]A perspective view of an example of a vehicle windshield with a multilayer glass laminate according to several embodiments is shown.

[0016] [Figure 3] An example of a multilayer glass laminate according to several embodiments is shown.

[0017] [Figure 4] This diagram shows impact reliability data for multilayer glass laminates with different exterior-facing glass layer materials, either soda-lime glass or borosilicate glass. The X-axis represents impact energy (J), and the Y-axis represents the glass unreliability.

[0018] [Figure 5] This diagram provides impact reliability data for multilayer glass laminates with varying glass layer thicknesses facing the interior. The X-axis represents impact energy (J), and the Y-axis represents the proportion of a group of test materials that are likely to fail.

[0019] [Figure 6] This graph shows impact reliability data for multilayer glass laminates containing adhesive interlayers with various glass transition temperatures (Tg) and energy absorption characteristics. The X-axis represents impact energy (J), and the Y-axis represents the glass unreliability.

[0020] Embodiments of this disclosure and their advantages will be best understood by referring to the detailed description below. Similar reference numerals are used to identify similar elements shown in one or more of the figures, and it should be understood that the representations in the figures are for illustrative purposes only and not to limit this disclosure. [Modes for carrying out the invention]

[0021] This disclosure can be understood by referring to the following detailed description. For clarity, it should be noted that certain elements in the various drawings may not be drawn to scale, may be represented schematically or conceptually, or may not precisely correspond to the specific physical form of the embodiment.

[0022] The embodiments relate to laminated glass structures or multilayer glass laminates that can be used in vehicles, for example, as windshields. The disclosed embodiments of laminated glass structures can provide higher durability compared to conventional vehicle glass structures such as a single glass sheet or multiple layers of glass formed from conventional glass and adhesive materials. Some embodiments may include one or more layers of borosilicate glass, which can increase durability and allow for the formation of more complex curved shapes, such as vehicle windshields or other vehicle components. In one embodiment, the glass is multilayer glass having an inner glass layer, an adhesive layer, and an outer layer of borosilicate glass. Some embodiments can provide high transparency, which may also be beneficial in vehicle mounting. In some embodiments, the multilayer glass laminate provides high damage resistance, including preventing or reducing crack initiation and / or crack propagation.

[0023] Further advantages of such improved multilayer glass laminates include improved customer experience (as the need to replace the windshield or other glass components due to glass damage or breakage is reduced or eliminated), greater technological integration into the glass components, cost reduction, improved sustainability, reduced waste, improved impact resistance to sharp objects (e.g., from sharp objects such as sharp rocks kicked up by heavy trucks on highways), improved impact resistance to blunt objects such as glass damage caused by bending the glass and tensioning the opposite side (generally the inner ply) (e.g., from small and large blunt impact objects such as small smooth rocks kicked up on highways, or from human impacts such as collisions with pedestrians and / or collisions with vehicle occupants in accidents, including elbows that hit the window glass when vehicles enter or exit parking lots), and improved scratch resistance which can further prevent glass breakage due to existing scratching or crack activation (e.g., improper handling during transport or manufacturing). Improvements to resistance to pitting corrosion (from rough handling, contact with driver / passenger objects such as keys and jewelry, and / or cleaning), exposure to impacts with energy too low to cause cracks (for example, impact or forced contact with small gravel or sand may cause microscopic dents or cracks on the glass surface that do not propagate to a thickness sufficient to cause visible cracks, which may cloud the glass surface due to the cumulative effect of micro-damage), improvements to thermal cycling which can cause both crack initiation and crack propagation (for example, relatively small temperature changes may propagate existing cracks or cracks, all materials have a coefficient of thermal expansion (CTE), and materials with higher CTEs expand and contract more with temperature changes), and humidity and / or wet resistance, where the presence of moisture at the crack tip can significantly increase the crack propagation rate of the glass (e.g., soda-lime glass).

[0024] For example, the mechanism of crack propagation in conventional glass (e.g., soda-lime glass) is shown in Figure 1. Figure 1 shows a siloxane bond fracture mechanism that can be partially caused by water. Such siloxane bond fracture can lead to crack propagation and may appear in automotive glass when small edge cracks or cracks caused by impact (e.g., rock chips) grow throughout the windshield after rain or when condensation is present. Embodiments of this specification can mitigate these effects by using a borosilicate glass layer in the outer layer of glass that is subjected to impact from road objects.

[0025] Figure 2 shows an example of a vehicle 10 in which a multilayer glass laminate 20 is mounted on a windshield 30. In some embodiments, the windshield may be a front windshield, side windshields, rear windshields, top windshields, or roof windshields (e.g., sunroofs or moonroofs), headlamps, or headlights, or combinations thereof. In some embodiments, the windshield is a front windshield, side windshields, back windshields, top windshields, or combinations thereof. In some embodiments, the vehicle windshield has a curved shape. In some embodiments, the multilayer glass laminate is molded to fit into a vehicle windshield frame. In some embodiments, the vehicle windshield is configured to break into small pieces in compliance with government safety guidelines. In some embodiments, the vehicle includes a vehicle frame. In some embodiments, the vehicle includes an electric motor. Multilayer glass laminate

[0026] Figure 3 shows an example of a multilayer glass laminate 100 in exploded view and side view. The multilayer glass laminate 100 includes an outer layer of borosilicate glass (i.e., an outward-facing glass layer) 101 and an inner layer of glass (i.e., an inward-facing glass layer) 102. An adhesive intermediate layer 103 is positioned between the outer layer of glass 101 and the inner layer of glass 103. The multilayer glass laminate 100 may comprise one or more further layers of glass and adhesive. It should be understood that each layer of glass within the laminate 100 may comprise one or more layers or laminates. The orientation of the layers can be reversed (for example, the outer layer may be inverted to face the inside of the vehicle, and the inner layer may be inverted to face the outside of the vehicle). Furthermore, the materials of the layers of the laminate can be adjusted for desired durability. The materials described herein can be implemented in various combinations, and even if they are described only as "equipped with," it can be understood that any of the three layers 101, 102, and 103 may be equipped with, essentially composed of, or consist of the materials described herein.

[0027] In some embodiments, the multilayer glass laminate includes a borosilicate glass outer-facing layer, an adhesive intermediate layer, and a layer facing the interior of the borosilicate glass. In these embodiments, the adhesive layer may be, for example, polyvinyl ether (PVE). In some embodiments, the multilayer glass laminate includes a borosilicate glass outer-facing layer, an adhesive intermediate layer, and a layer facing the interior of the aluminosilicate glass. In some embodiments, the multilayer glass laminate includes a borosilicate glass outer-facing layer, an adhesive intermediate layer, and a layer facing the interior of the tempered glass.

[0028] In some embodiments, the multilayer glass laminate includes an externally facing layer of borosilicate glass, an adhesive intermediate layer, and an internally facing layer comprising borosilicate glass and aluminosilicate glass. In some embodiments, the multilayer glass laminate includes an externally facing layer of borosilicate glass, an adhesive intermediate layer, and an internally facing layer comprising borosilicate glass and tempered glass. In some embodiments, the multilayer glass laminate includes an externally facing layer of borosilicate glass, an adhesive intermediate layer, and an internally facing layer on which aluminosilicate glass and tempered glass are formed.

[0029] In some embodiments, the multilayer glass laminate includes a borosilicate glass outer-facing layer, a first adhesive interlayer, one or more borosilicate glass interlayers, a second adhesive interlayer, and a layer facing the interior of the borosilicate glass, in this enumerated order. In some embodiments, the multilayer glass laminate includes a borosilicate glass outer-facing layer, a first adhesive interlayer, one or more borosilicate glass interlayers, a second adhesive interlayer, and a layer facing the interior of the aluminosilicate glass, in this enumerated order. In some embodiments, the multilayer glass laminate includes a borosilicate glass outer-facing layer, a first adhesive interlayer, one or more borosilicate glass interlayers, a second adhesive interlayer, and a layer facing the interior of the tempered glass, in this enumerated order.

[0030] In some embodiments, the multilayer glass laminate includes, in this enumerated order, an externally facing layer of borosilicate glass, a first adhesive intermediate layer, one or more borosilicate glass intermediate layers, a second adhesive intermediate layer, and an internally facing layer comprising borosilicate glass and aluminosilicate glass. In some embodiments, the multilayer glass laminate includes, in this enumerated order, an externally facing layer of borosilicate glass, a first adhesive intermediate layer, one or more borosilicate glass intermediate layers, a second adhesive intermediate layer, and an internally facing layer comprising borosilicate glass and tempered glass. In some embodiments, the multilayer glass laminate includes, in this enumerated order, an externally facing layer of borosilicate glass, a first adhesive intermediate layer, one or more borosilicate glass intermediate layers, a second adhesive intermediate layer, and an internally facing layer formed from aluminosilicate glass and tempered glass.

[0031] In some embodiments, the multilayer glass laminate includes a borosilicate glass outer-facing layer, a first adhesive intermediate layer, one or more borosilicate glass and aluminosilicate glass intermediate layers, a second adhesive intermediate layer, and a layer facing the interior of the borosilicate glass, in this enumerated order. In some embodiments, the multilayer glass laminate includes a borosilicate glass outer-facing layer, a first adhesive intermediate layer, one or more borosilicate glass and tempered glass intermediate layers, a second adhesive intermediate layer, and a layer facing the interior of the aluminosilicate glass, in this enumerated order. In some embodiments, the multilayer glass laminate includes a borosilicate glass outer-facing layer, a first adhesive intermediate layer, one or more aluminosilicate glass and tempered glass intermediate layers, a second adhesive intermediate layer, and a layer facing the interior of the tempered glass, in this enumerated order.

[0032] In some embodiments, the multilayer glass laminate includes, in this enumerated order, a borosilicate glass outer-facing layer, a first adhesive intermediate layer, one or more borosilicate glass and aluminosilicate glass intermediate layers, a second adhesive intermediate layer, and an interior-facing layer comprising borosilicate glass and aluminosilicate glass. In some embodiments, the multilayer glass laminate includes, in this enumerated order, a borosilicate glass outer-facing layer, a first adhesive intermediate layer, one or more borosilicate glass and tempered glass intermediate layers, a second adhesive intermediate layer, and an interior-facing layer comprising borosilicate glass and tempered glass. In some embodiments, the multilayer glass laminate includes, in this enumerated order, a borosilicate glass outer-facing layer, a first adhesive intermediate layer, one or more aluminosilicate glass and tempered glass intermediate layers, a second adhesive intermediate layer, and an interior-facing layer comprising aluminosilicate glass and tempered glass.

[0033] In some embodiments, the multilayer glass laminate includes, at least, or up to, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 layers of material or any range of values ​​between them. In some embodiments, the multilayer glass laminate includes, at least, or up to, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 glass layers or any range of values ​​between them. In some embodiments, at least one layer of the multilayer glass laminate does not contain or lacks soda-lime glass. In some embodiments, all layers of the multilayer glass laminate do not contain or lack soda-lime glass.

[0034] In some embodiments, the multilayer glass laminate has a maximum or approximately 10% probability of breakage upon impact of a value of 1 J, 1.5 J, 2 J, 2.5 J, 3 J, 3.2 J, 3.5 J, 3.8 J, 3.9 J, 4 J, 4.5 J, 5 J or 6 J, approximately these values, or any range of values therebetween. In some embodiments, the multilayer glass laminate has a maximum or approximately 1%, 2%, 3%, 4%, 5%, 6%, 8%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60% or 70% probability of breakage or any range of values therebetween upon impact of 3 J or approximately 3 J. In some embodiments, the multilayer glass laminate has a curved shape. In some embodiments, the multilayer glass laminate is configured to break into small pieces. In some embodiments, the multilayer glass laminate may further comprise various suitable materials with various properties to provide one or more of the advantages described herein.

[0035] In some embodiments, the multilayer glass laminate has a thickness of 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, , 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, 120 mm, 140 mm, 160 mm, 180 mm, 200 mm, 225 mm, 250 mm, 300 mm, or 500 mm, approximately these values, up to these values, up to approximately these values, or any range of values therebetween. In some embodiments, the multilayer glass laminate has a density of 1 kg / m 2 , 2 kg / m 2 , 3 kg / m 2 , 4 kg / m 2 , 5 kg / m 2 , 5.5 kg / m 2 , 6 kg / m 2 , 6.5 kg / m 2 , 7 kg / m 2 , 7.5 kg / m 2 , 8 kg / m 2 , 8.5 kg / m 2 , 9 kg / m 2 , 9.5 kg / m 2 , 10 kg / m2 , 11 kg / m 2 , 12 kg / m 2 , 13 kg / m 2 , 15 kg / m 2 , 20kg / m 2 , 25 kg / m 2 , or 50 kg / m 2 It has a surface density of values ​​such as , approximately these values, at most these values, at most approximately these values, or has a surface density of values ​​within any range between these. glass layer facing the outside

[0036] The exterior-facing glass layer includes glass that is robust against damage, such as damage from impacts with sharp objects, scratches, and pitting corrosion. In some embodiments, the exterior-facing glass layer may be shatterproof, shatterproof, chemically treated to further enhance hardness and durability, or a combination thereof. In some embodiments, the exterior-facing glass layer is shatterproof or shatterproof. In some embodiments, the exterior-facing glass layer is resistant to crack initiation and crack propagation. In some embodiments, when a crack occurs, the exterior-facing glass layer may form or be prone to forming a conical crack. Conical cracks can help the layer stop crack propagation, particularly with respect to radial cracks known to occur in other materials such as soda-lime glass. In some embodiments, the exterior-facing glass layer is the outermost or innermost layer of a multilayer glass laminate.

[0037] In some embodiments, the exterior-facing glass layer comprises a material containing a metal. In some embodiments, the metal is selected from boron, silicon, and combinations thereof. In some embodiments, the material is a transparent material. In some embodiments, the material is borosilicate glass. In some embodiments, the exterior-facing glass layer does not contain or comprises soda-lime glass. In some embodiments, the exterior-facing glass layer does not contain soda-lime glass. In some embodiments, the chemical properties of the absence of soda-lime make the exterior-facing glass layer less susceptible to chemical breakdown of bonds that would lead to moisture-induced cracks in the glass. Similar to thermal cycling resistance, moisture resistance can prevent crack growth from existing cracks and fissures, thus avoiding the need for glass replacement.

[0038] The exterior-facing glass layer may include glass with higher density compared to conventional windshield glass. Such an exterior-facing glass layer (e.g., comprising borosilicate glass) with higher density compared to low-density glass (e.g., soda-lime glass) can improve scratch resistance and pitting corrosion resistance. In some embodiments, the exterior-facing glass layer may have a density of 1 g / cm³. 3 1.5 g / cm³ 3 1.75 g / cm³ 3 , 2g / cm³ 3 2.25 g / cm³ 3 2.5 g / cm³ 3 2.75 g / cm³ 3 , 3g / cm³ 3 3.5 g / cm³ 3 , 4g / cm³ 3 5g / cm³ 3 , 6g / cm 3 7g / cm³ 3 8g / cm³ 3 , 9g / cm³ 3 , 10g / cm 3The hardness has a density of values ​​of 3 Mohs, 4.2 Mohs, 4.4 Mohs, 4.6 Mohs, 4.8 Mohs, 5 Mohs, 5.1 Mohs, 5.2 Mohs, 5.3 Mohs, 5.4 Mohs, 5.5 Mohs, 5.6 Mohs, 5.7 Mohs, 5.8 Mohs, 5.9 Mohs, 6 Mohs, 6.2 Mohs, 6.4 Mohs, 6.6 Mohs, 6.8 Mohs, 7 Mohs, or 8 Mohs, a hardness of approximately these values, a hardness of at least these values, a hardness of at least approximately these values, or a hardness of any range of values ​​between these. In some embodiments, the exterior-facing glass layer has a maximum or approximately 10% breakability with impacts of 1J, 1.5J, 2J, 2.5J, 3J, 3.2J, 3.5J, 3.8J, 3.9J, 4J, 4.5J, 5J, or 6J, or approximately these values, or any range of values ​​in between. In some embodiments, the exterior-facing glass layer has a maximum or approximately 1%, 2%, 3%, 4%, 5%, 6%, 8%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60%, or 70% breakability with impacts of 3J or approximately 3J, or any range of values ​​in between. In some embodiments, the glass layer facing the outside has a thickness of 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 7 mm, 8 mm, 9 mm, 10 mm, 12 mm, 15 mm, 18 mm, or 20 mm, or a thickness of approximately these values ​​or any range in between.

[0039] The exterior-facing glass layer may include glass with a lower coefficient of thermal expansion (low CTE) compared to conventional windshield glass. Low CTE glass effectively reduces the glass's sensitivity to thermal cycle crack growth. Therefore, even if the glass is more robust against impact, it may still be damaged or cracked. However, if a crack or fissure occurs in the glass, low CTE glass is less likely to grow or amplify the damage due to stress caused by temperature changes. In the United States, there is a legal requirement that windshield cracks must not exceed 12 mm. While legal requirements regarding crack size and replacement often apply to commercial trucks, some jurisdictions have crack requirements for passenger and other vehicles. Therefore, even if a crack occurs in the glass due to rock, low CTE glass can prevent the crack or fissure from expanding to a size that legally requires windshield replacement. In some embodiments, the exterior-facing glass layer has a capacity of 1 × 10 at 20°C. -6 K -1 , 1.5×10 -6 K -1 , 2×10 -6 K -1 , 2.2 × 10 -6 K -1 , 2.4×10 -6 K -1 , 2.6×10 -6 K -1 , 2.8×10 -6 K -1 , 3 x 10 -6 K -1 , 3.2×10 -6 K -1 , 3.4×10 -6 K -1 , 3.6×10 -6 K -1 , 3.8×10 -6 K -1 , 4×10 -6 K -1 , 4.5×10 -6 K -1 or 5 x 10 -6 K -1The coefficient of thermal expansion (CTE) has values ​​of , approximately these values, at most these values, at most approximately these values, or any range of values ​​in between.

[0040] It has been found that multilayer glass laminates with an externally facing borosilicate glass layer result in glass laminates with higher impact resistance compared to conventional glass laminates, such as conventional glass laminates used for vehicle windshields that do not contain borosilicate glass. In some embodiments, multilayer glass laminates with an externally facing borosilicate glass layer result in glass laminates with 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, or 20 times higher impact resistance compared to conventional glass laminates, such as conventional glass laminates used for vehicle windshields that do not contain borosilicate glass. glass layer facing the interior

[0041] The inward-facing glass layer may contain thin, flexible, and / or strong glass, thereby allowing more of the impact energy to dissipate through bending rather than shattering. In some embodiments, the inward-facing glass layer is the outermost or innermost layer of a multilayer glass laminate.

[0042] In some embodiments, the interior-facing glass layer may comprise the same or a different material as the exterior-facing glass layer. For example, in some embodiments, the interior-facing glass layer may have the same or a different chemical composition, strength, hardness, and / or flexibility as the exterior-facing glass layer. In some embodiments, the interior-facing glass layer comprises a material selected from the group consisting of borosilicates, aluminosilicates, tempered glass, and combinations thereof. In some embodiments, the interior-facing glass layer comprises a material selected from the group consisting of aluminosilicates, tempered glass, and combinations thereof.

[0043] In some embodiments, the inward-facing glass layer is chemically strengthened. Chemical strengthening of the glass creates a compression layer on the glass surface, thereby making it much more difficult to scratch or damage the glass. Since impacts from blunt objects activate cracks on the opposite surface of the glass, chemically strengthening the inward-facing glass layer can reduce the likelihood of breakage from crack activation due to impact. In some embodiments, the inward-facing glass layer may be shatterproof, shatterproof, or chemically treated to further enhance hardness and durability.

[0044] In some embodiments, the inward-facing glass layer has a maximum or approximately 10% breakability with impacts of 1J, 1.5J, 2J, 2.5J, 3J, 3.2J, 3.5J, 3.8J, 3.9J, 4J, 4.5J, 5J, or 6J, or approximately these values, or any range of values ​​in between. In some embodiments, the inward-facing glass layer has a maximum or approximately 1%, 2%, 3%, 4%, 5%, 6%, 8%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60%, or 70% breakability with impacts of 3J or approximately 3J, or any range of values ​​in between.

[0045] In some embodiments, the inward-facing glass layer has a thickness of 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.8 mm, 1 mm, 1.1 mm, 1.2 mm, 1.5 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 7 mm, 8 mm, 9 mm, 10 mm, or 12 mm, approximately these thicknesses, up to these thicknesses, up to approximately these thicknesses, or any range of values ​​in between. In some embodiments, the inward-facing glass layer is the same thickness as or different from the outward-facing glass layer. In some embodiments, the inward-facing glass layer is thicker than the outward-facing glass layer. In some embodiments, the inward-facing glass layer is thinner than the outward-facing glass layer. In some embodiments, the thickness ratio of the outer-facing glass layer to the inner-facing glass layer is a value of 1:10, 1:5, 1:2, 1:1, 2:1, 3:1, 4:1, 5:1, 6:1, 7:1, 8:1, 9:1, 10:1, 12:1, 15:1, 20:1, 40:1, approximately these values, less than these values, approximately less than these values, at most these values, at most approximately these values, greater than these values, approximately greater than these values, at least these values, at least approximately these values, or any range of values ​​between these. adhesive interlayer

[0046] The adhesive interlayer may be positioned between the outer-facing glass layer and the inner-facing glass layer. In some embodiments, the adhesive interlayer comprises an interlayer material. In some embodiments, the interlayer material comprises an adhesive. In some embodiments, the adhesive comprises polyvinyl ether (PVE). In some embodiments, the adhesive interlayer comprises multiple layers.

[0047] In some embodiments, the adhesive interlayer has energy-absorbing properties. In some embodiments, the interlayer material has energy-absorbing properties. In some embodiments, the interlayer material has a glass transition temperature (Tg) outside the zone of normal operating conditions in a vehicle. In some embodiments, the interlayer material can prevent the brittleness typical of conventional vehicle glass. Selecting an interlayer material with high energy absorption can help limit breakage from both blunt and sharp impacts. Impact energy must be dissipated by a combination of bending and fracture (as well as heat and sound) to avoid damage to the glass layer. Therefore, the more energy that can be absorbed by the interlayer, the less energy is transferred to the outer and inner glass layers. Furthermore, a low glass transition temperature (Tg) helps ensure uniform glass performance across all driving environments. Above Tg, the interlayer is flexible; below Tg, the interlayer becomes brittle and unable to dissipate impact energy. However, a typical vehicle spends an average of 10% of its mileage below the Tg of conventional interlayer materials. Thus, the low Tg interlayer solution ensures uniform performance across all operating temperatures and does not suffer further breakage in cold temperatures. In some embodiments, the adhesive interlayer has a glass transition temperature of 1°C, 2°C, 3°C, 4°C, 5°C, 6°C, 7°C, 8°C, 9°C, 10°C, 11°C, 12°C, 15°C, or 20°C, approximately these values, at least these values, at least approximately these values, up to these values, up to approximately these values, or any range of values ​​in between.

[0048] Furthermore, decoration on the glass layer introduces weaknesses into the glass laminate. For example, black frit used at the edges of automotive glass laminates introduces stresses to the glass surface that weaken the laminate. To eliminate these stresses and create a more durable glass laminate, decoration can be added to the adhesive interlayer. In some embodiments, the interlayer material includes the decoration. In some embodiments, the decoration is printed on the adhesive interlayer. Further layers and elements

[0049] A multilayer glass laminate may include further layers and / or elements incorporated into the multilayer glass laminate. In some embodiments, the multilayer glass laminate further comprises or includes at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 further layers or any range of values ​​between them. In some embodiments, the further layers are further intermediate layers. In some embodiments, at least one further layer is selected from the group consisting of glass layers, adhesive layers, light-absorbing layers, light-reflecting layers, sound-attenuating layers, and combinations thereof. In some embodiments, the light-absorbing layer includes a coloring material. In some embodiments, the multilayer glass laminate further comprises or includes at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 elements or any range of values ​​between them. In some embodiments, the multilayer glass laminate further comprises elements selected from a group consisting of cameras, sensors, heating elements, waveguides, incoupling optical elements, outcoupling optical elements, light emission devices, and combinations thereof. In some embodiments, the elements are positioned or arranged in an externally facing layer, an internally facing layer, or between an externally facing layer and an internally facing layer.

[0050] In some embodiments, the element is a camera. In some embodiments, the multilayer glass laminate includes a camera field of view region. In some embodiments, the camera field of view region has an optical distortion (e.g., an average optical distortion in millideopter - mdpt) of values of 1 mdpt, 5 mdpt, 10 mdpt, 50 mdpt, 75 mdpt, 100 mdpt, 125 mdpt, 150 mdpt, 175 mdpt, 200 mdpt, 225 mdpt, 250 mdpt, 275 mdpt, 300 mdpt, 325 mdpt, 350 mdpt, 400 mdpt, 500 mdpt, 600 mdpt, 700 mdpt, 800 mdpt, 1000 mdpt, approximately these values of optical distortion, up to these values of optical distortion, up to approximately these values of optical distortion, or an optical distortion of values within any range between these. In some embodiments, the camera field of view region is 0.1 cm 2 , about 0.5 cm 2 , about 1 cm 2 , 2 cm 2 , 3 cm 2 , 4 cm 2 , 5 cm 2 , 6 cm 2 , 7 cm 2 , 8 cm 2 , 9 cm 2 , 10 cm 2 , 15 cm 2 , 20 cm 2 , 25 cm 2 , 30 cm 2 , 40 cm 2 , 50 cm 2 , 60 cm 2 , 80 cm 2 , 100 cm 2 , 125 cm 2 , 150 cm 2 , 200 cm 2 , 250 cm 2 , 300 cm 2 , 400 cm 2 , 500 cm 2 , 600 cm 2 , 700 cm 2 , 800 cm 2 , or 1000 cm 2The size of the values, approximately the size of these values, up to the size of these values, up to approximately the size of these values, or the size of any range of values ​​in between. method

[0051] Methods for manufacturing multilayer glass laminates are also described. In some embodiments, an externally facing glass layer is formed. In some embodiments, an internally facing glass layer is formed. In some embodiments, an adhesive intermediate layer is formed. In some embodiments, the adhesive intermediate layer is positioned between the externally facing glass layer and the internally facing glass layer to form a multilayer glass laminate. example

[0052] The performance of multilayer glass laminates with various glass compositions is empirically measured using diamond drop tests, in which weighted diamonds are dropped from different heights to calculate the impact energy leading to fracture. These measurement results are shown below. Example 1

[0053] Figure 4 is a line graph showing the difference in unreliability between multilayer glass laminates with borosilicate glass (circular marker) and soda-lime glass (triangular marker) of nearly the same thickness (3.3 mm and 3.2 mm, respectively) used as the outer-facing glass layer. Figure 4 shows that the soda-lime laminate has a 10% chance of failure when struck by a projectile with an impact energy of 1.4 J, but the borosilicate laminate has the same 10% chance of failure when struck by a projectile with a much higher impact energy of 3.9 J. Therefore, glass laminates with an outer borosilicate glass layer were able to withstand larger projectile impacts than glass laminates with an outer soda-lime glass layer. Example 2: Glass layer facing the interior

[0054] Figure 5 is a line graph showing the difference in unreliability between multilayer glass laminates with interior-facing glass layers of different thicknesses for impact performance. In Figure 5, the circular marker indicates a multilayer glass laminate with the thickest glass layer, the upward-pointing triangular marker indicates a multilayer glass laminate with the next thickest glass layer, and the downward-pointing triangular marker indicates a multilayer glass laminate with the thinnest glass layer.Figure 5 demonstrates that multilayer glass laminates with thinner inward-facing glass layers exhibit improved performance when subjected to projectile impacts. Therefore, glass laminates with thinner inward-facing glass layers were able to withstand larger projectile impacts than glass laminates with thicker inward-facing glass layers. Example 3 Adhesive interlayer

[0055] Figure 6 is a line graph showing the difference in unreliability between multilayer glass laminates having different adhesive interlayers with varying Tg and energy absorption properties. Figure 6 shows multilayer glass laminates containing adhesive interlayers with lower Tg and higher absorption properties. (Indicated by the triangular marker in Figure 6) However, it has been demonstrated that this results in improved performance when impacted by a projectile. Therefore, a glass laminate with an adhesive interlayer having a lower Tg and higher absorption characteristics is superior to a glass laminate with an adhesive interlayer having a higher Tg and lower absorption characteristics. (Indicated by circular markers in Figure 6) It was able to withstand a larger projectile impact.

[0056] While specific embodiments have been described, these embodiments are presented as examples only and are not intended to limit the scope of this disclosure. In fact, the novel methods and systems described herein can be embodied in a variety of other forms. Furthermore, various omissions, substitutions, and modifications of systems and methods can be made without departing from the spirit of this disclosure. The appended claims and their equivalents are intended to encompass forms or modifications that are contained within the scope and spirit of this disclosure.

[0057] Features, materials, properties, or groups described in relation to a particular aspect, embodiment, or example should be understood to be applicable to any other aspect, embodiment, or example described in this section or elsewhere in this specification, provided that they are not incompatible. All features disclosed in this specification (including the appended claims, abstract, and drawings) and / or all steps of any method or process so as to be disclosed may be combined in any combination, except for any combination in which at least some of such features and / or steps are mutually exclusive. Protection is not limited to the details of any of the aforementioned embodiments. Protection extends to any novel features or any novel combination of features disclosed in this specification (including the appended claims, abstract, and drawings), or to any novel steps of any method or process so as to be disclosed.

[0058] Furthermore, certain features described in this disclosure in relation to separate implementations may also be implemented in combination in a single implementation. Conversely, various features described in relation to a single implementation may also be implemented separately or in any suitable partial combination in multiple implementations. Furthermore, although features may be described earlier as acting in a particular combination, one or more features from a combination described in the claims may, in some cases, be removed from the combination, and the combination may be described in the claims as a partial combination or a variation of a partial combination.

[0059] Furthermore, while operations may be depicted in a specific order in the drawings or described in the specification, such operations do not need to be performed in the specific order or sequential order shown, or not all operations need to be performed, in order to obtain the desired result. Other operations not illustrated or described may be incorporated into the examples of methods and processes. For example, one or more additional operations may be performed before, after, simultaneously with, or between any of the described operations. Furthermore, operations may be rearranged or reordered in other embodiments. As will be apparent to those skilled in the art, in some embodiments, the actual steps performed in the illustrated and / or disclosed processes may differ from those shown in the drawings. Depending on the embodiment, certain steps among the aforementioned steps may be omitted, while other steps may be added. Furthermore, the features and attributes of a particular embodiment disclosed in advance may be combined in different ways to form further embodiments, all of which fall within the scope of this disclosure. Also, the separation of various system components in the above-described embodiments should not be understood as requiring such separation in all embodiments, and it should be understood that the described components and systems can generally be combined into a single product or packaged into multiple products. For example, any of the components for an energy storage system described herein may be provided separately or integrated with one another to form an energy storage system (e.g., packaged together or attached to one another).

[0060] For the purposes of this disclosure, specific embodiments, advantages, and novel features are described herein. Not all such advantages can necessarily be achieved according to any particular embodiment. Therefore, as will be apparent to those skilled in the art, for example, this disclosure can be embodied or implemented to obtain one or a group of advantages taught herein without necessarily achieving other advantages that can be taught or suggested herein.

[0061] Conditional language such as "can," "could," "might," or "may," unless otherwise specified or understood to have a different meaning in the context in which they are used, is generally intended to convey that a particular embodiment includes certain features, elements, and / or steps, but other embodiments do not. Therefore, such conditional language does not necessarily imply that features, elements, and / or steps are required in any way in one or more embodiments, or that one or more embodiments include or perform these features, elements, and / or steps in any particular embodiment, with or without user input or prompting.

[0062] Conjunctions such as the phrase "at least one of X, Y, and Z" are generally understood in contexts where they are used to convey that an item, term, etc., could be any of X, Y, or Z, unless otherwise specified. Therefore, such conjunctions are not generally intended to imply that a particular embodiment requires the presence of at least one X, at least one Y, and at least one Z.

[0063] As used herein, the terms “approximately,” “about,” “generally,” and “substantially” refer to values, quantities, or characteristics close to the stated values, quantities, or characteristics that still perform the desired function or achieve the desired result. For example, the terms “approximately,” “about,” “generally,” and “substantially” may refer to quantities less than 10%, less than 5%, less than 1%, less than 0.1%, and less than 0.01% of the stated quantity, depending on the desired function or desired result.

[0064] Where headings are included herein, they are for convenience only and do not necessarily affect the scope or meaning of the apparatus and methods disclosed herein.

[0065] The scope of this disclosure is not intended to be limited by any specific disclosure of preferred embodiments in this section or elsewhere in this specification, but may be defined by the claims, as presented in this section or elsewhere in this specification, or as presented in the future. The language of the claims should be interpreted broadly on the basis of the language used in the claims, and not limited to the examples described herein or during the examination of an application, and the examples should be interpreted as non-exclusive. (Note) [Form 1] A multilayer glass laminate for vehicle windshields, A glass layer facing the outside containing borosilicate, The glass layer facing the interior, A multilayer glass laminate comprising an adhesive intermediate layer positioned between the externally facing glass layer and the internally facing glass layer, wherein the adhesive intermediate layer comprises an adhesive, and the multilayer glass laminate is a vehicle windshield and is molded to fit into a vehicle windshield frame. [Form 2] The aforementioned multilayer glass laminate weighs approximately 7.5 kg / m². 2 ~about 10kg / m 2 A multilayer glass laminate according to Embodiment 1 having a surface density. [Form 3] The multilayer glass laminate according to Embodiment 1, wherein the multilayer glass laminate has a maximum fracture potential of 10% under an impact of 2J. [Form 4] The vehicle windshield is a multilayer glass laminate according to Embodiment 1, selected from a group consisting of a front windshield, side windshields, rear windshields, top windshields, and combinations thereof. [Form 5] The multilayer glass laminate according to Embodiment 1, wherein the glass layer facing the outside has a maximum fracture potential of 10% under an impact of 2J. [Form 6] The multilayer glass laminate according to Embodiment 1, wherein the glass layer facing the outside has a thickness of approximately 2 mm to approximately 5 mm. [Form 7] The multilayer glass laminate according to Embodiment 1, wherein the glass layer facing the outside is the outermost layer of the multilayer glass laminate. [Form 8] The multilayer glass laminate according to Embodiment 1, wherein the glass layer facing the outside is shatterproof or shatterproof. [Form 9] The multilayer glass laminate according to Embodiment 1, wherein the glass layer facing the outside is resistant to crack initiation and crack propagation. [Form 10] The multilayer glass laminate according to Embodiment 1, wherein the glass layer facing the outside does not contain soda-lime glass. [Form 11] The multilayer glass laminate according to Embodiment 1, wherein the glass layer facing the interior comprises a material selected from the group consisting of aluminosilicate, tempered glass, and combinations thereof. [Form 12] The multilayer glass laminate according to Embodiment 1, wherein the glass layer facing the interior has a thickness of approximately 0.5 mm to approximately 1.1 mm. [Form 13] The multilayer glass laminate according to Embodiment 1, wherein the glass layer facing the interior is the outermost layer of the multilayer glass laminate. [Form 14] The multilayer glass laminate according to Embodiment 1, wherein the ratio of the thickness of the glass layer facing the outside to the thickness of the glass layer facing the inside is greater than 1:1. [Form 15] The multilayer glass laminate according to Embodiment 14, wherein the thickness ratio of the glass layer facing the outside to the glass layer facing the inside is greater than 1:1 and approximately 10:1 or less. [Form 16] The multilayer glass laminate according to Embodiment 1, wherein the adhesive intermediate layer has energy absorption properties. [Form 17] The multilayer glass laminate according to Embodiment 1, wherein the adhesive intermediate layer has a glass transition temperature of approximately 6°C to approximately 10°C. [Form 18] The multilayer glass laminate according to Embodiment 1, wherein the adhesive intermediate layer comprises a plurality of layers. [Form 19] The multilayer glass laminate according to Embodiment 1, wherein the adhesive contains polyvinyl ether (PVE). [Form 20] The multilayer glass laminate according to Embodiment 1, further comprising at least one further layer, wherein the at least one further layer is selected from the group consisting of a light-absorbing layer, a light-reflecting layer, an acoustic-attenuating layer, and combinations thereof. [Form 21] The multilayer glass laminate according to Embodiment 20, wherein at least one further layer comprises a light-absorbing layer, and the light-absorbing layer comprises a coloring material. [Form 22] The multilayer glass laminate according to Embodiment 1, further comprising elements selected from a group consisting of cameras, sensors, heating elements, waveguides, incoupling optical elements, outcoupling optical elements, light emission devices, and combinations thereof. [Form 23] The multilayer glass laminate according to Embodiment 1, wherein the vehicle windshield has a curved shape. [Form 24] The multilayer glass laminate according to Embodiment 1, wherein the vehicle windshield is configured to break into small pieces. [Form 25] A vehicle comprising a vehicle frame and a multilayer glass laminate as described in Embodiment 1. [Form 26] A vehicle as described in form 25, further equipped with an electric motor. [Form 27] The vehicle according to embodiment 25, further comprising a camera positioned opposite to the glass layer facing the interior of the multilayer glass laminate. [Form 28] The vehicle according to Embodiment 27, wherein the multilayer glass laminate further comprises a camera field of view area, the camera is positioned to view through the camera field of view area of ​​the multilayer glass laminate, and the camera field of view area has an optical distortion of less than approximately 250 millidiopters. [Form 29] A method for manufacturing a multilayer glass laminate, The steps include forming an externally facing glass layer containing borosilicate, The steps include forming a glass layer facing the interior, The steps include forming an adhesive intermediate layer containing an adhesive, A method for forming a multilayer glass laminate, comprising the step of positioning the adhesive intermediate layer between the outer-facing glass layer and the inner-facing glass layer.

Claims

1. A multilayer glass laminate for vehicle windshields, A glass layer facing the outside containing borosilicate, The glass layer facing the interior, An adhesive intermediate layer positioned between the externally facing glass layer and the internally facing glass layer, wherein the adhesive intermediate layer is provided with decoration printed on the adhesive intermediate layer, and the multilayer glass laminate is a vehicle windshield and is molded to fit into a vehicle windshield frame, A field of view having optical distortion of less than 250 millidiopters, wherein the optical distortion is measured by determining the change in angular deviation with respect to distance, comprising: A multilayer glass laminate in which the ratio of the thickness of the outer-facing glass layer to the thickness of the inner-facing glass layer is greater than 8:1 and less than 40:

1.

2. The aforementioned multilayer glass laminate weighs 7.5 kg / m². ２ ~10 kg / m ２ A multilayer glass laminate according to claim 1, having a surface density.

3. The multilayer glass laminate according to claim 1 or 2, wherein the multilayer glass laminate has a maximum fracture probability of 10% under an impact of 2 J, and the fracture probability is determined by a drop test in which a weighted object is dropped from a height calculated to generate a specific impact energy.

4. The multilayer glass laminate according to claim 1 or 2, wherein the vehicle windshield is selected from a group consisting of a front windshield, side windshields, rear windshields, top windshields, and combinations thereof.

5. The multilayer glass laminate according to claim 1 or 2, wherein the outward-facing glass layer has a maximum fracture potential of 10% under an impact of 2 J, and the fracture potential is determined by a drop test in which a weighted object is dropped from a height calculated to generate a specific impact energy.

6. The multilayer glass laminate according to claim 1 or 2, wherein the glass layer facing the outside has a thickness of 2 mm to 5 mm.

7. The multilayer glass laminate according to claim 1 or 2, wherein the glass layer facing the outside is the outermost layer of the multilayer glass laminate.

8. The multilayer glass laminate according to claim 1 or 2, wherein the glass layer facing the outside is shatterproof or shatterproof.

9. The multilayer glass laminate according to claim 1 or 2, wherein the glass layer facing the outside is resistant to crack initiation and crack propagation.

10. The multilayer glass laminate according to claim 1 or 2, wherein the glass layer facing the outside does not contain soda-lime glass.

11. The multilayer glass laminate according to claim 1 or 2, wherein the glass layer facing the interior comprises a material selected from the group consisting of aluminosilicate, tempered glass, and combinations thereof.

12. The multilayer glass laminate according to claim 1 or 2, wherein the glass layer facing the interior has a thickness of 0.5 mm to 1.1 mm.

13. The multilayer glass laminate according to claim 1 or 2, wherein the glass layer facing the interior is the outermost layer of the multilayer glass laminate.

14. The multilayer glass laminate according to claim 1, wherein the thickness ratio of the glass layer facing the outside to the glass layer facing the inside is greater than 8:1 and 10:1 or less.

15. The multilayer glass laminate according to claim 1 or 2, wherein the adhesive intermediate layer has energy absorption properties.

16. The multilayer glass laminate according to claim 1 or 2, wherein the adhesive intermediate layer has a glass transition temperature of 6°C to 10°C.

17. The multilayer glass laminate according to claim 1 or 2, wherein the adhesive intermediate layer comprises a plurality of layers.

18. The multilayer glass laminate according to claim 1 or 2, wherein the adhesive intermediate layer contains polyvinyl ether (PVE).

19. The multilayer glass laminate according to claim 1 or 2, further comprising at least one further layer, wherein the at least one further layer is selected from the group consisting of a light-absorbing layer, a light-reflecting layer, an acoustic-attenuating layer, and combinations thereof.

20. The multilayer glass laminate according to claim 19, wherein at least one further layer comprises a light-absorbing layer, and the light-absorbing layer comprises a coloring material.

21. The multilayer glass laminate according to claim 1 or 2, further comprising elements selected from a group consisting of cameras, sensors, heating elements, waveguides, incoupling optical elements, outcoupling optical elements, light emission devices, and combinations thereof.

22. The multilayer glass laminate according to claim 1 or 2, wherein the vehicle windshield has a curved shape.

23. The multilayer glass laminate according to claim 1 or 2, wherein the vehicle windshield is configured to break into small pieces.

24. The multilayer glass laminate according to claim 1 or 2, wherein the adhesive intermediate layer does not include decoration.

25. The multilayer glass laminate according to claim 1 or 2, wherein the adhesive intermediate layer is continuous, and the edges of the outer-facing glass layer, the inner-facing glass layer, and the adhesive intermediate layer overlap.

26. The multilayer glass laminate according to claim 1, wherein the adhesive intermediate layer is made of an adhesive.

27. A vehicle comprising a vehicle frame and a multilayer glass laminate as described in claim 1.

28. The vehicle according to claim 27, further comprising an electric motor.

29. The vehicle according to claim 27, further comprising a camera positioned opposite to the glass layer facing the interior of the multilayer glass laminate.

30. The vehicle according to claim 29, wherein the multilayer glass laminate further comprises a camera field of view area, the camera is positioned to view through the camera field of view area of ​​the multilayer glass laminate, and the camera field of view area has an optical distortion of less than 250 millidiopters.

31. A method for manufacturing a multilayer glass laminate, The process includes the step of forming a multilayer glass laminate by bonding an externally facing glass layer containing a borosilicate to an internally facing glass layer using an adhesive intermediate layer having a decoration printed on the adhesive intermediate layer, The multilayer glass laminate comprises a field of view having an optical distortion of less than 250 millidiopters, wherein the optical distortion is measured by determining the change in angular deviation with respect to distance. A method wherein the ratio of the thickness of the outer-facing glass layer to the inner-facing glass layer is greater than 8:1 and less than 40:

1.

32. The method according to claim 31, comprising the step of molding the multilayer glass laminate to fit into a vehicle windshield frame, wherein the multilayer glass laminate is a vehicle windshield.

33. The method according to claim 32, wherein the vehicle windshield is selected from a group consisting of a front windshield, side windshields, rear windshields, top windshields, and combinations thereof.

34. The method according to claim 32, wherein the vehicle windshield is molded to have a curved shape.

35. The method according to claim 32, wherein the vehicle windshield is configured to break into small pieces in accordance with government safety guidelines.

36. The method according to any one of claims 31 to 35, wherein the multilayer glass laminate has a maximum fracture potential of 10% in an impact of 2 J, and the fracture potential is determined by a drop test in which a weighted object is dropped from a height calculated to generate a specific impact energy.

37. The aforementioned multilayer glass laminate has a density of 7.5 kg / m². ２ ~10 kg / m ２ The method according to any one of claims 31 to 35, having a surface density.

38. The method according to any one of claims 31 to 35, wherein the step of forming the outward-facing glass layer includes shaping the outward-facing glass layer to fit into a vehicle windshield frame, and the multilayer glass laminate is a vehicle windshield.

39. The method according to any one of claims 31 to 35, wherein the outward-facing glass layer has a maximum fracture potential of 10% in an impact of 2 J, and the fracture potential is determined by a drop test in which a weighted object is dropped from a height calculated to generate a specific impact energy.

40. The method according to any one of claims 31 to 35, wherein the glass layer facing the outside has a thickness of 2 mm to 5 mm.

41. The method according to any one of claims 31 to 35, wherein the glass layer facing the interior has a thickness of 0.5 mm to 1.1 mm.

42. The method according to claim 31, wherein the thickness ratio of the glass layer facing the outside to the glass layer facing the inside is greater than 8:1 and 10:1 or less.

43. The method according to any one of claims 31 to 35, wherein the adhesive intermediate layer has a glass transition temperature of 6°C to 10°C.

44. The method according to any one of claims 31 to 35, further comprising elements selected from the group consisting of cameras, sensors, heating elements, waveguides, incoupling optical elements, outcoupling optical elements, light emission devices, and combinations thereof.

45. The method according to any one of claims 31 to 35, further comprising the step of positioning the multilayer glass laminate within the vehicle frame of a vehicle.

46. The method according to claim 45, wherein the vehicle further comprises an electric motor.

47. The method according to claim 45, further comprising the step of positioning a camera so as to face the glass layer facing the interior of the multilayer glass laminate.

48. The method according to claim 47, wherein the camera is positioned to view through the field of view.

49. The method according to any one of claims 31 to 35, wherein the adhesive intermediate layer does not include decoration.

50. The method according to any one of claims 31 to 35, wherein the adhesive intermediate layer is continuous, and the edges of the outer-facing glass layer, the inner-facing glass layer, and the adhesive intermediate layer overlap.

51. The method according to any one of claims 31 to 35, wherein a portion of the adhesive intermediate layer is not removed before forming the multilayer glass laminate.

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