Cold-formed glass article with thermal matching system and process for forming the same

Abstract

A glass article is provided with a cover glass sheet having a first major surface and a second major surface. The second major surface has a first region and a second region, the first region having a first curved surface with a first radius of curvature, and the second region being different from the first region. A support surface of a frame has a third region of a first frame material and a fourth region of a different, second frame material. The second major surface faces the support surface, and the third region includes a second curved surface complementary to the first curved surface, while the fourth region is complementary to the second region. A first adhesive is disposed between the third region and the first region. A second adhesive is disposed between the fourth region and the second region. The first adhesive has a first Young's modulus, and the second adhesive includes a second Young's modulus different from the first Young's modulus.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority under 35 U.S.C. §119 to U.S. Provisional Application No. 62 / 773,505, filed on November 30, 2018, and U.S. Provisional Application No. 62 / 773,497, filed on November 30, 2018, the contents of which are relied upon and incorporated herein by reference in their entireties. Technical Field

[0003] The present disclosure relates to vehicle interior systems including glass and methods of forming the same, and more particularly, to vehicle interior systems including curved glass articles having cold-formed or cold-bent cover glass and methods of forming the same. Background Art

[0004] Vehicle interiors include curved surfaces and can incorporate displays in these curved surfaces. Materials used to form these curved surfaces are typically limited to polymers that do not exhibit the same durability and optical performance as glass. Therefore, curved glass substrates are desirable, especially when used as covers for displays. Existing methods of forming these curved glass substrates, such as thermoforming, have disadvantages including high cost, optical distortion, and surface marking.

[0005] In addition, the curved surface is typically bonded to the frame or lower surface using an adhesive material. However, the combination of the properties of the curved surface, the adhesive, and the frame may cause deformation of the curved surface. Such deformation may occur during the manufacturing process or during use of the vehicle interior system.

[0006] Applicants have therefore recognized a need for a vehicle interior system that can incorporate curved glass substrates in a cost-effective manner, with high reliability and reduced undesired deformation, and without the problems typically associated with glass thermoforming processes. Summary of the invention

[0007] According to one aspect, embodiments of the present disclosure relate to a curved glass article. In one or more embodiments, a cover glass sheet includes a first major surface and a second major surface, the second major surface having a first region and a second region, the first region having a first curved surface with a first radius of curvature, and the second region being different from the first region. A frame of the glass article has a support surface, the support surface including a third region of a first frame material and a fourth region of a second frame material different from the first frame material. The second major surface of the cover glass sheet faces the support surface of the frame, and the third region includes a second curved surface complementary to the first curved surface, while the fourth region is complementary to the second region. A first adhesive is disposed between the third region of the support surface of the frame and the first region of the second major surface of the cover glass sheet. A second adhesive is disposed between the fourth region of the support surface of the frame and the second region of the second major surface of the cover glass sheet. The first adhesive has a first Young's modulus, and the second adhesive includes a second Young's modulus different from the first Young's modulus.

[0008] In another embodiment, a glass article having a cover glass sheet is provided, wherein the cover glass sheet has a first major surface and a second major surface. The second major surface includes a first region and a second region, the first region having a first curved surface with a first radius of curvature, and the second region is different from the first region. A frame includes a first support surface and a second support surface, wherein the first support surface includes a first frame material and is consistent with the first region of the second major surface. The second support surface includes a second frame material and is consistent with the second region of the second major surface. A first adhesive is provided between the first support surface and the first region of the second major surface. A second adhesive is provided between the second support surface and the second region of the second major surface, wherein the first frame material is different from the second frame material, and the first region includes a greater curvature than the second region.

[0009] Additional features and advantages will be set forth in the detailed description that follows, and in part will be apparent to those skilled in the art from that description or recognized by practicing the embodiments as discussed herein, including the following detailed description, the claims, and the accompanying drawings.

[0010] It is to be understood that both the foregoing general description and the following detailed description are exemplary only and are intended to provide an overview or framework to understand the nature and character of the claims. The accompanying drawings are included to provide further understanding and are incorporated into and constitute a part of this specification. The drawings illustrate one or more embodiments and together with the description serve to explain the principles and operation of the various embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a perspective view of a vehicle interior having a vehicle interior system according to one or more embodiments.

[0012] Figure 2 is a cross-sectional view of a glass substrate after being cold bent and attached to a bending frame according to one or more embodiments.

[0013] Figure 3 is a perspective view of a curved glass substrate having a plurality of convex and concave curved surfaces according to an exemplary embodiment.

[0014] Figure 4 is a front perspective view of a glass substrate according to an exemplary embodiment.

[0015] Figure 5 is the calculation result of a series of ATOS data for the glass articles according to the comparative examples and examples discussed herein.

[0016] Figure 6 are finite element results for model data of the embodiments discussed herein.

[0017] Figure 7 Data from deformation testing of glass articles according to one or more embodiments are shown.

[0018] Figure 8 Data from deformation testing of glass articles according to one or more additional embodiments is shown. DETAILED DESCRIPTION

[0019] Reference will now be made in detail to various embodiments, examples of which are illustrated in the accompanying drawings. In general, vehicle interior systems may include various curved surfaces designed to be transparent, such as curved display surfaces and curved non-display glass covers, and the present disclosure provides articles and methods of forming these curved surfaces from glass materials. Forming curved vehicle surfaces from glass materials provides several advantages over typical curved plastic panels commonly found in vehicle interiors. For example, glass is typically viewed as providing enhanced functionality and user experience compared to plastic cover materials in many curved cover material applications such as display applications and touch screen applications.

[0020] Thus, as will be discussed in greater detail below, the present applicants have developed a glass article and associated manufacturing process that provides an efficient and cost-effective way to utilize cold-bent workpieces of glass substrates to form articles such as displays for vehicle interior systems.

[0021] The automotive industry has witnessed an increasing need for technological innovation in vehicle interiors, driven by consumer demand. As a result, vehicle manufacturers are creating more connected and interactive interiors while providing a safe vehicle environment for drivers and passengers. For example, large-format displays are becoming more common, and this trend is expected to continue as the industry moves toward autonomous driving. There is also a need for these larger displays to include touch functionality similar to the touchscreen phone, tablet, and computer interfaces that consumers have become accustomed to. Most displays for vehicle interiors consist of a two-dimensional plastic cover lens, but there is interest in having three-dimensional surfaces for design flexibility.

[0022] Although plastic materials can be molded into three-dimensional shapes more easily than glass, plastics exhibit many inferior properties compared to glass. In particular, plastic materials are susceptible to permanent damage during blunt impacts, daily wear, and ultraviolet (UV) exposure. The use of hard coatings on plastics has alleviated these problems to some extent, but plastics (with or without hard coatings) still have many disadvantages compared to glass.

[0023] Glass is an ideal replacement for plastic cover lenses due to the excellent functionality and user experience it provides. However, cover glass lenses have been primarily limited to two-dimensional surfaces. Conventional methods for forming three-dimensional glass surfaces use heat bending or thermoforming processes. This process is energy-intensive due to the high temperatures involved and adds significant cost to the product. Therefore, there is a need to develop a low-cost technology to make three-dimensional glass surfaces.

[0024] Therefore, in one or more embodiments described herein, the glass article is formed by cold bending a glass sheet onto a frame, wherein the glass sheet is adhered to the frame using an adhesive between the glass sheet and the frame. As used herein, the term "cold bending", "cold bending", "cold forming" or "cold forming" refers to bending a glass substrate at a cold forming temperature below the glass transition temperature of the glass material of the glass substrate. One of the challenges faced by cold-bent glass is the limit of its safe bending and installation in vehicles. As interior designers require very sharp curvatures or complex shapes with multiple curved surfaces, it is necessary to develop a solution to safely use glass in automotive interiors. In particular, the cold bending process generates bending stresses and changes the central tension in the glass. This in turn affects the fragility and retention risk of the glass during catastrophic failures such as local severe impacts. In addition, the applicant has found that undesirable deformation of the glass article may occur during the manufacture and processing of the glass article. For example, deformation may occur during the curing of the adhesive at high temperature and / or the subsequent cooling of the glass article, or deformation may occur during the thermal cycle of the glass article. Thus, embodiments herein provide glass articles with significantly lower or no distortion from these processes. Addressing these distortion issues also allows for greater design flexibility for glass articles while also having greater reliability.

[0025] In one or more embodiments described herein, improved glass products and methods for forming them are realized by paying attention to the interaction of glass, adhesive and frame. In one aspect of some embodiments, the combination of structural adhesive and frame material is selected to minimize the product deformation caused by different thermal expansion mismatches, and three-dimensional (3D) cold-formed glass products are provided simultaneously. Except the coefficient of thermal expansion, the elongation of adhesive is also described and considered in the improved glass products of design. Although high modulus structural adhesive can keep the shape of cold-bent glass, their relatively lower elongation values ​​together with the different coefficients of thermal expansion of cover glass and frame material can cause product deformation during solidification (heating and subsequent cooling cycle) and thermal cycle events.

[0026] Advantages of embodiments herein are achieved by designing glass articles having a specific combination of structural features and materials. The materials include the material of the frame, the material of the glass, and the material of the adhesive, while the structural features include, for example, the size of the glass article, the thickness of the glass sheet, and the geometry of the finished glass article, including, for example, the radius of curvature. For small radii (such as 250 mm), toughened epoxies with lower elongation (e.g., less than about 10% elongation) are preferred due to their higher strength. Due to the lower elongation properties of toughened epoxies, the frame material used can have a similar strength to the glass sheet (e.g., Corning Glass) with a similar CTE, such as SS410. On the other hand, with a shallow radius (such as about 600 mm or greater), a wider variety of adhesive materials can be used, including toughened epoxies (with a modulus of about 10 MPa), urethanes, or silicones. Silicone structural adhesives have high elongation (~200%) and can be used in combination with frame and glass materials with a larger CTE mismatch. For example, silicone structural adhesives can be used to connect The glass is bonded to polycarbonate, acrylonitrile butadiene styrene (PC / ABS), or magnesium (Mg) AZ91D alloy. If a toughened epoxy for a flat radius is used, a frame material with a CTE similar to that of the cover glass can be used.

[0027] In addition, as an aspect of the embodiments disclosed herein, multiple adhesive materials can be used in a single glass product, especially in glass products of large size and / or complex shape. Large parts are more susceptible to deformation due to CTE mismatch. For example, in one or more embodiments, a high modulus toughened epoxy resin (with lower elongation) is used in the curved area of ​​the product design, while a low modulus adhesive material (with higher elongation), such as a silicone adhesive, is used in the flat area or lower curvature area. For example, the reference product design can be an S-shaped or a shape having a combination of a curved part and an additional flat or curved part. The use of multiple adhesives can also simplify the forming process, such as alignment in a cold forming process. For example, a VHB material (pressure sensitive adhesive) can be used in the display area of ​​the reference product design, and is also used for alignment of the cover glass relative to the frame. Note that in some preferred embodiments, a high modulus toughened epoxy material (such as 3M TM Scotch-WeldTM DP460).

[0028] In further aspects of one or more embodiments, large format components can use a hybrid approach for frame materials. In particular, the frame can be made of different materials with different CTEs, where the selected frame material is selected based at least in part on the location or geometry of the component within the product design and the CTE of the frame material. For example, the curved region of an S-shaped component can be made of (having The flat display area can be made of SS410 (with a CTE similar to glass), while the flat display area can be made of materials such as PC / ABS, Al 5052 H32 alloy, or MgAZ91D alloy because the longer elongation silicone adhesive can tolerate large CTE mismatch materials.

[0029] A method for forming a curved glass product is provided. In one or more embodiments, a structural adhesive is applied to a 3D frame in the first step of the method. The structural adhesive includes materials from epoxy (toughened, flexible), acrylics, urethanes, silicones, or other similar types. These adhesives can be heat cured or cured at room temperature. The dispensing process uniformly applies the structural adhesive over the entire surface of the 3D frame. This step can utilize standard dispensing processes such as bead dispensers, roller coating, screen printing, slit coating, inkjet coating, spraying, or other similar processes. After the dispensing process, the frame is transferred to a vacuum table. The base plate can be used to support the frame (including alignment). The cover glass is then transferred to the vacuum table and placed on the top of the 3D frame with the structural adhesive. The cover glass is aligned with the 3D frame, for example, using dowel pins / track features. Close the lid of the vacuum table, and apply vacuum pressure to cold-form the glass into the shape of the 3D frame. The base of the vacuum table is heated to ensure the curing of the structural adhesive. In addition, heat is also applied from the top of the vacuum table. After the adhesive has cured to a certain extent, the part achieves green compressive strength and is removed from the vacuum table. The remaining curing of the adhesive lasts for a longer time (1 to 2 days) at room temperature.

[0030] Figure 1 An example of a vehicle interior 1000 including three different embodiments 100, 200, 300 of a vehicle interior system is shown. The vehicle interior system 100 includes a frame shown as a center console base 110, which has a curved surface 120 including a curved display 130. The vehicle interior system 200 includes a frame shown as an instrument panel base 210, which has a curved surface 220 including a curved display 230. The instrument panel base 210 typically includes an instrument control panel, which may also include a curved display. The vehicle interior system 300 includes a frame shown as a steering wheel base 310, which has a curved surface 320 and a curved display 330. In one or more embodiments, the vehicle interior system includes a frame as an armrest, a pillar, a backrest, a floor, a headrest, a door panel, or any part of a vehicle interior that includes a curved surface. In other embodiments, the frame is part of a housing for a self-standing display (i.e., a display that is not permanently attached to a part of the vehicle).

[0031] The embodiments of the curved glass articles described herein can be used in each of the vehicle interior systems 100, 200, and 300. Further, the curved glass articles discussed herein can be used as curved cover glass for any curved display embodiments discussed herein, including for use in the vehicle interior systems 100, 200, and / or 300. Further, in various embodiments, various non-display components of the vehicle interior systems 100, 200, and 300 can be formed by the glass articles discussed herein. In some such embodiments, the glass articles discussed herein can be used as non-display cover surfaces for instrument panels, center consoles, door panels, etc. In these embodiments, the glass material can be selected based on its weight, aesthetic appearance, etc., and can be provided with a coating (e.g., an ink coating or a pigment coating) having a pattern (e.g., a brushed metal appearance, a wood grain appearance, a leather appearance, a colored appearance, etc.) to visually match the glass component with an adjacent non-glass component. In a specific embodiment, such an ink coating or a pigment coating can have a transparency level that provides dead front functionality.

[0032] According to one or more embodiments, Figure 2 A curved glass article 10 such as a cover glass for a curved display 130 is described. It should be understood that although Figure 2 is described with respect to forming a curved display 130, but Figure 2 The bent glass article 10 may be used in any suitable bent glass application, including Figure 1 Any curved glass component of any vehicle interior system. Such a curved glass component can be a display area or a non-display area, such as a flat display area and a curved non-display area, a curved display, and a curved display and a curved non-display area.

[0033] exist Figure 2 1 , the frame 12 includes a curved surface shown as curved surface 14. The curved glass article 10 includes a glass substrate 16. The glass substrate 16 includes a first major surface 18 and a second major surface 20 opposite the first major surface 18. A minor surface 22 connects the first major surface 18 and the second major surface 20, and in a specific embodiment, the minor surface 22 defines the outer perimeter of the glass substrate 16. The glass substrate 16 is attached to the frame 12 via an adhesive layer 24. In an embodiment, the adhesive layer 24 includes at least two adhesives.

[0034] Generally, the glass substrate 16 is cold formed or cold bent into a desired curved shape by applying a bending force 26. Figure 2As shown in , after cold bending, the glass substrate 16 has a curved shape, so that the first major surface 18 and the second major surface 20 each include at least one curved segment having a radius of curvature. In the specific embodiments shown, the curved surface 14 of the frame 12 is a convex curved surface. In these embodiments, the glass substrate 16 is bent so that the first major surface 18 defines a concave shape that generally conforms to the convex curvature of the curved surface 14, and the second major surface 20 defines a convex curvature that generally matches or is a mirror image of the convex curvature of the curved surface 14. In these embodiments, both surfaces 18, 20 define a first radius of curvature R1 that generally matches the radius of curvature of the curved surface 14 of the frame 12.

[0035] In an embodiment, R1 is between 30 mm and 5 m. Further, in an embodiment, the glass substrate 16 has Figure 2 The thickness T1 shown in (e.g., the average thickness measured between surfaces 18, 20) is in the range of from 0.05 mm to 2 mm. In a specific embodiment, T1 is less than or equal to 1.5 mm, and in a more specific embodiment, T1 is 0.4 mm to 1.3 mm. Applicants have found that such thin glass substrates can be cold-formed into various curved shapes (including relatively high radii of curvature discussed herein) without cracking using cold forming while providing a high-quality cover layer for various vehicle interior applications. In addition, such thin glass substrates 16 can be deformed more easily, which can potentially compensate for shape mismatches and gaps that may exist relative to the curved surface 14 and / or the frame 12.

[0036] In various embodiments, the first major surface 18 and / or the second major surface 20 of the glass substrate 16 include one or more surface treatments or layers. The surface treatment may cover at least a portion of the first major surface 18 and / or the second major surface 20. Exemplary surface treatments include anti-glare surfaces / coatings, anti-reflective surfaces / coatings, and easy-to-clean surface coatings / treatments. In one or more embodiments, at least a portion of the first major surface 18 and / or the second major surface 20 may include any one, any two, or all three of the anti-glare surfaces, anti-reflective surfaces, and easy-to-clean coatings / treatments. For example, the first major surface 18 may include an anti-glare surface and the second major surface 20 may include an anti-reflective surface. In another example, the first major surface 18 includes an anti-reflective surface and the second major surface 20 includes an anti-glare surface. In yet another example, the first major surface 18 includes any one or both of the anti-glare surface and the anti-reflective surface, and the second major surface 20 includes an easy-to-clean coating.

[0037] In an embodiment, the glass substrate 16 may also include a pigment design on the first major surface 18 and / or the second major surface 20. The pigment design may include any aesthetic design formed from a pigment (e.g., ink, paint, etc.), and may include a wood grain design, a brushed metal design, an image design, a portrait, or a logo. The pigment design may be printed on the glass substrate. In one or more embodiments, the anti-glare surface includes an etched surface. In one or more embodiments, the anti-reflective surface includes a multilayer coating.

[0038] In one aspect of one or more embodiments described herein, the glass article may include one or more adhesives, which may include a pressure sensitive adhesive (PSA), a UV curable acrylic adhesive, a polyurethane (PUR) hot melt adhesive, a silicone hot melt adhesive, etc. For example, the adhesive may include one or more PSAs, such as 3M TM VHB TM (available from 3M, St. Paul, MN) and (available from tesa SE, Norderstedt, Germany); or UV curable adhesives such as DELO MF4992 (available from DELO Industrial Adhesives, Windach, Germany). Some adhesives contemplated may be cured using, for example, one or more of pressure, heat, or ultraviolet radiation. Additional example adhesives include toughened epoxies, flexible epoxies, acrylics, silicones, urethanes, polyurethanes, and silane-modified polymers. One or more toughened epoxies may include, for example, EP21TDCHT-LO (available from Hackensack, NJ), 3M TM Scotch-Weld TM Epoxy DP460 Off-White (available from 3M, St. Paul, MN). The one or more flexible epoxy resins may include, for example, Masterbond EP21TDC-2LO (available from , Hackensack, NJ), 3M TM Scotch-Weld TM Epoxy 2216B / A Gray (available from 3M, St. Paul, MN), and 3M TM Scotch-Weld TM Epoxy DP125. The adhesive may include one or more acrylics, such as Adhesive410 / Accelerator 19w / AP 134primer, Adhesive 852 / Accelerator 25GB (both available from LORD Corporation, Cary, NC), DELO PUR SJ9356 (available from DELO Industrial Adhesives, Windach, Germany), AA4800, HF8000, MS 9399, and MS 647-2C (these latter four are available from Henkel AG & Co. KGaA, Düsseldorf, Germany), etc. The adhesive may also include urethanes, such as 3M TM Scotch-Weld TM Urethane DP640 Brown and 3M TM Scotch-Weld TM Urethane DP604, or one or more silicone resins, such as (available from Dow Corning Corporation, Midland, MI).

[0039] In embodiments, a primer may be applied to prepare the surfaces of the glass substrate 16 and frame 12 for better adhesion to the first adhesive 28 and / or the second adhesive 30, particularly for frames 12 made of metal or including metal surfaces, and for glass surfaces of the glass substrate 16. Further, in embodiments, an ink primer may be used in addition to or in place of a primer for metal and glass surfaces. The ink primer helps provide better adhesion between the first adhesive 28 and / or the second adhesive 30 and ink-covered surfaces (e.g., the pigment designs mentioned above for dead-end applications). An example of a primer is 3M TM Scotch-Weld TM Metal Primer 3901 (available from 3M, St. Paul, MN); other commercially available primers may also be suitable for use in the present disclosure and may be selected based on the surfaces involved in the bond and based on the adhesive used to create the bond.

[0040] In various embodiments, the glass substrate 16 is formed of a strengthened glass sheet (e.g., a heat-strengthened glass material, a chemically-strengthened glass sheet, etc.). In these embodiments, when the glass substrate 16 is formed of a strengthened glass material, the first major surface 18 and the second major surface 20 are under compressive stress, and thus the second major surface 20 can experience greater tensile stress during bending to a convex shape without risking fracture. This allows the strengthened glass substrate 16 to conform to a more tightly curved surface.

[0041] Once the glass substrate has been bent into a curved shape, the cold-formed glass substrate is characterized by an asymmetric surface compression between the first major surface 18 and the second major surface 20. In these embodiments, the compressive stresses in each of the first major surface 18 and the second major surface 20 of the glass substrate 16 are substantially equal prior to the cold forming process or being cold formed. After cold forming, the compressive stress on the concave first major surface 18 increases, such that the compressive stress on the first major surface 18 is greater after cold forming than before cold forming. In contrast, the convex second major surface 20 experiences a tensile stress during bending, resulting in a net decrease in the surface compressive stress on the second major surface 20, such that the compressive stress in the second major surface 20 after bending is less than the compressive stress in the second major surface 20 when the glass sheet is flat.

[0042] As described above, in addition to providing processing advantages such as eliminating expensive and / or slow heating steps, the cold forming processes discussed herein are believed to produce curved glass articles having various properties superior to those of hot formed glass articles, particularly for vehicle interior or display cover glass applications. For example, Applicants believe that, for at least some glass materials, heating during the hot forming process degrades the optical properties of the curved glass sheet, and therefore, the curved glass substrates formed using the cold bending processes / systems discussed herein provide both curved glass shapes and improved optical quality that are believed to be unachievable with hot bending processes.

[0043] Further, many glass surface treatments (e.g., anti-glare coatings, anti-reflective coatings, easy-to-clean coatings, etc.) are applied via deposition processes such as sputtering processes that are generally not suitable for coating curved glass articles. In addition, many surface treatments (e.g., anti-glare coatings, anti-reflective coatings, easy-to-clean coatings, etc.) cannot survive the high temperatures associated with hot bending processes. Therefore, in the particular embodiments discussed herein, one or more surface treatments are applied to the first major surface 18 and / or the second major surface 20 of the glass substrate 16 prior to cold bending, and then the glass substrate 16 including the surface treatments is bent into a curved shape as discussed herein. Therefore, the applicant believes that the processes and systems discussed herein allow for bending of glass after one or more coating materials have been applied to the glass, as compared to typical hot forming processes.

[0044] It should be noted that in Figure 2 In the embodiment of the present invention, the glass substrate 16 is shown as having a single curvature, such that the second major surface 20 has a single convex radius of curvature and the first major surface 18 has a single concave radius of curvature. However, the methods discussed herein allow the glass substrate 16 to be bent into more complex shapes. For example, Figure 3 As shown in , the glass substrate 16 is bent to such a shape that the first major surface 18 has both convex and concave curved segments, and the second major surface 20 has both convex and concave curved segments, forming an S-shaped glass substrate when viewed from a cross section. Additionally, the glass substrate 16 may include flat areas (not shown) between the curved segments.

[0045] In various embodiments, the cold-formed glass substrate 16 may have a compound curved surface including a main radius and a cross curvature. The complex curved cold-formed glass substrate 16 may have different radii of curvature in two independent directions. According to one or more embodiments, the complex curved cold-formed glass substrate 16 may therefore be characterized as having a "cross curvature", wherein the cold-formed glass substrate 16 is bent along an axis parallel to a given dimension (i.e., a first axis) and is also bent along an axis perpendicular to the same dimension (i.e., a second axis). When a significant minimum radius is combined with a significant cross curvature, and / or depth of bend, the curvature of the cold-formed glass substrate and the curvature of the curved display can be even more complex. In various embodiments, the glass substrate 16 may have more than two curved regions having the same or different curved shapes. In some embodiments, the glass substrate 16 may have one or more regions having a curved shape with a variable radius of curvature.

[0046] Reference Figure 4 , additional structural details of the glass substrate 16 are shown and described. As described above, the glass substrate 16 has a thickness T1, which is substantially constant and is defined as the distance between the first major surface 18 and the second major surface 20. In various embodiments, T1 may refer to the average thickness or the maximum thickness of the glass substrate. In addition, the glass substrate 16 includes a width W1, which is defined as the first maximum dimension of one of the first major surface 18 or the second major surface 20 that is orthogonal to the thickness T1; and a length L1, which is defined as the second maximum dimension of one of the first major surface 18 or the second major surface 20 that is orthogonal to both the thickness and the width. In other embodiments, W1 and L1 may be the average width and average length of the glass substrate 16, respectively.

[0047] In various embodiments, the thickness T1 is 2 mm or less, and specifically 0.3 mm to 1.1 mm. For example, the thickness T1 can be from about 0.1 mm to about 1.5 mm, from about 0.15 mm to about 1.5 mm, from about 0.2 mm to about 1.5 mm, from about 0.25 mm to about 1.5 mm, from about 0.3 mm to about 1.5 mm, from about 0.4 mm to about 1.5 mm, from about 0.45 mm to about 1.5 mm, from about 0.5 mm to about 1.5 mm, from about 0.55 mm to about 1.5 mm, from about 0.6 mm to about 1.5 mm, from about 0.65 mm to about 1.5 mm, from about 0.7 mm to about 1.5 mm, from about 0.1 mm to about 1.4 mm, from about 0.1 mm to about 1.3 mm, from about 0.1 mm to about 1.2 mm. In some embodiments, T1 is from about 0.1mm to about 1.1mm, from about 0.1mm to about 1.05mm, from about 0.1mm to about 1mm, from about 0.1mm to about 0.95mm, from about 0.1mm to about 0.9mm, from about 0.1mm to about 0.85mm, from about 0.1mm to about 0.8mm, from about 0.1mm to about 0.75mm, from about 0.1mm to about 0.7mm, from about 0.1mm to about 0.65mm, from about 0.1mm to about 0.6mm, from about 0.1mm to about 0.55mm, from about 0.1mm to about 0.5mm, from about 0.1mm to about 0.4mm, or from about 0.3mm to about 0.7mm. In other embodiments, T1 falls within any one of the exact numerical ranges set forth in this paragraph.

[0048] In various embodiments, the width W1 is from about 5 cm to about 250 cm, from about 10 cm to about 250 cm, from about 15 cm to about 250 cm, from about 20 cm to about 250 cm, from about 25 cm to about 250 cm, from about 30 cm to about 250 cm, from about 35 cm to about 250 cm, from about 40 cm to about 250 cm, from about 45 cm to about 250 cm, from about 50 cm to about 250 cm, from about 55 cm to about 250 cm, from about 60 cm to about 250 cm, from about 65 cm to about 250 cm, from about 70 cm to about 250 cm, from about 75 cm to about 250 cm, from about 80 cm to about 250 cm, from about 85 cm to about 250 cm, from about 90 cm to about 250 cm, from about 95 cm to about 250 cm, from about 100 cm to about 250 cm, from about 110 cm to about From about 5 cm to about 190 cm, from about 5 cm to about 180 cm, from about 5 cm to about 170 cm, from about 5 cm to about 160 cm, from about 5 cm to about 150 cm, from about 5 cm to about 140 cm, from about 5 cm to about 130 cm, from about 5 cm to about 120 cm, from about 110 cm, from about 5 cm to about 100 cm, from about 5 cm to about 90 cm, from about 5 cm to about 80 cm, or from about 5 cm to about 75 cm. In other embodiments, W1 falls within any of the exact numerical ranges set forth in this paragraph.

[0049] In various embodiments, the length L1 is from about 5 cm to about 1500 cm, from about 50 cm to about 1500 cm, from about 100 cm to about 1500 cm, from about 150 cm to about 1500 cm, from about 200 cm to about 1500 cm, from about 250 cm to about 1500 cm, from about 300 cm to about 1500 cm, from about 350 cm to about 1500 cm, from about 400 cm to about 1500 cm, from about 450 cm to about 1500 cm, from about 500 cm to about 1500 cm, from about 550 cm to about 1500 cm, from about 600 cm to about 1500 cm, from about 650 cm to about 1500 cm, from about 700 cm to about 1500 cm, from about In some embodiments, L1 is from about 750cm to about 1500cm, from about 800cm to about 1500cm, from about 850cm to about 1500cm, from about 900cm to about 1500cm, from about 950cm to about 1500cm, from about 1000cm to about 1500cm, from about 1050cm to about 1500cm, from about 1100cm to about 1500cm, from about 1150cm to about 1500cm, from about 1200cm to about 1500cm, from about 1250cm to about 1500cm, from about 1300cm to about 1500cm, from about 1350cm to about 1500cm, from about 1400cm to about 1500cm, or from about 1450cm to about 1500cm. In other embodiments, L1 falls within any one of the exact numerical ranges set forth in this paragraph.

[0050] In various embodiments, one or more radii of curvature (e.g., Figure 2For example, R1 may be from about 60 mm to about 10,000 mm, from about 70 mm to about 10,000 mm, from about 80 mm to about 10,000 mm, from about 90 mm to about 10,000 mm, from about 100 mm to about 10,000 mm, from about 120 mm to about 10,000 mm, from about 140 mm to about 10,000 mm, from about 150 mm to about 10,000 mm, from about 160 mm to about 10,000 mm, from about 170 mm to about 10,000 mm, from about 180 mm to about 10,000 mm, from about 190 mm to about 10,000 mm, from about 200 mm to about 20,000 mm, from about 210 mm to about 210 mm, from about 220 mm to about 220 mm, from about 230 mm to about 230 mm, from about 240 mm to about 250 mm, from about 260 mm to about 270 mm, from about 280 mm to about 290 mm mm to about 10,000 mm, from about 180 mm to about 10,000 mm, from about 200 mm to about 10,000 mm, from about 220 mm to about 10,000 mm, from about 240 mm to about 10,000 mm, from about 250 mm to about 10,000 mm, from about 260 mm to about 10,000 mm, from about 270 mm to about 10,000 mm, from about 280 mm to about 10,000 mm 0mm, from about 290mm to about 10,000mm, from about 300mm to about 10,000mm, from about 350mm to about 10,000mm, from about 400mm to about 10,000mm, from about 450mm to about 10,000mm, from about 500mm to about 10,000mm, from about 550mm to about 10,000mm, from about 600mm to about 10,000mm, from about 650mm to about 10,000mm, mm to about 10,000 mm, from about 700 mm to about 10,000 mm, from about 750 mm to about 10,000 mm, from about 800 mm to about 10,000 mm, from about 850 mm to about 10,000 mm, from about 900 mm to about 10,000 mm, from about 950 mm to about 10,000 mm, from about 1000 mm to about 10,000 mm, from about 1250 mm to about 10,000mm, from about 60mm to about 9000mm, from about 60mm to about 8000mm, from about 60mm to about 7500mm, from about 60mm to about 7000mm, from about 60mm to about 6000mm, from about 60mm to about 5000mm, from about 60mm to about 4500mm, from about 60mm to about 4000mm, from about 60mm to about 3500mm, from about 60mm to about 3000mm, from about 60mm to about 2500mm, from about 60mm to about 2000mm, from about 60mm to about 1500mm, from about 60mm to about 1400mm, from about 60mm to about 1300mm, from about 60mm to about 1200mm, from about 60mm to about In some embodiments, R1 is within the range of about 1000 mm to about 1100 mm, from about 60 mm to about 1000 mm, from about 60 mm to about 950 mm, from about 60 mm to about 900 mm, from about 60 mm to about 850 mm, from about 60 mm to about 800 mm, from about 60 mm to about 750 mm, from about 60 mm to about 700 mm, from about 60 mm to about 650 mm, from about 60 mm to about 600 mm, from about 60 mm to about 550 mm, from about 60 mm to about 500 mm, from about 60 mm to about 450 mm, from about 60 mm to about 400 mm, from about 60 mm to about 350 mm, from about 60 mm to about 300 mm, from about 60 mm to about 250 mm, or from about 500 mm to about 2500 mm. In other embodiments, R1 falls within any one of the exact numerical ranges set forth in this paragraph. ,

[0051] like Figure 3 As shown in FIG. 1 , the glass substrate 16 may include one or more regions 50 intended to display a display (eg, an electronic display). In addition, the glass substrate according to some embodiments may be as shown in FIG. Figure 3 5 and 6. The glass substrate 16 is shown as being curved in multiple regions 52 and 54 of the glass substrate and in multiple directions (i.e., the glass substrate can be curved about different axes that may or may not be parallel). Thus, the shapes and forms of possible embodiments are not limited to the examples shown herein. The glass substrate 16 can be formed to have a complex surface including a plurality of different shapes, including one or more flat segments, one or more conical segments, one or more cylindrical segments, one or more spherical segments, etc.

[0052] Various embodiments of the vehicle interior system may be incorporated into vehicles such as trains, automobiles (e.g., cars, trucks, buses, and the like), marine vehicles (ships, ships, submarines, and the like), and aircraft (e.g., drones, airplanes, jets, helicopters, and the like).

[0053] In one or more embodiments, a glass article is provided, comprising a cover glass sheet having a first major surface and a second major surface. The second major surface comprises a first curved surface having a first radius of curvature and a second curved surface having a second radius of curvature different from the first radius of curvature. The glass article further comprises a frame having a supporting surface, the supporting surface having a third curved surface and a fourth curved surface. The frame and the cover glass sheet are arranged such that the second major surface of the cover glass sheet faces the supporting surface of the frame, and the third curved surface is complementary to the first curved surface and the fourth curved surface is complementary to the second curved surface. A first adhesive is disposed between the third curved surface of the supporting surface of the frame and the first curved surface of the second major surface of the cover glass sheet. A second adhesive is disposed between the fourth curved surface of the supporting surface of the frame and the second curved surface of the second major surface of the cover glass sheet. The first adhesive has a first elongation, and the second adhesive comprises a second elongation different from the first elongation.

[0054] In one aspect of some embodiments, the first adhesive has a first Young's modulus, while the second adhesive includes a second Young's modulus different from the first Young's modulus. In a further aspect, the first radius of curvature is less than the second radius of curvature, and the first elongation is less than the second elongation. In addition, the first Young's modulus may be greater than the second Young's modulus.

[0055] As an aspect of some embodiments, the first elongation is about 100% or less, about 50% or less, about 40% or less, about 30% or less, about 20% or less, or about 10% or less. The second elongation is about 10% or more, about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, about 70% or more, about 80% or more, about 90% or more, about 100% or more, about 150% or more, about 200% or more, about 250% or more, or about 300% or more.

[0056] The cover glass sheet may be made of a material having a first coefficient of thermal expansion, and the frame may be made of a material having a second coefficient of thermal expansion. As an aspect of some embodiments, the ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is less than 2, and the first adhesive comprises an elongation of about 10% or less. In an additional aspect, the ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is greater than or equal to 2, and the elongation of the first adhesive is greater than 10%, greater than about 50%, greater than about 100%, or greater than or equal to about 200%. The material of the frame includes a metal, an alloy, or a polymer, including at least one of stainless steel, polycarbonate (PC), acrylonitrile-butadiene-styrene (ABS), or a magnesium alloy. At least one of the first adhesive and the second adhesive may include a toughened epoxy, acrylic, urethane, or silicone.

[0057] As an aspect of one or more embodiments, the first radius of curvature is about 10000 mm or less, 9000 mm or less, 8000 mm or less, 7000 mm or less, 6000 mm or less, 5000 mm or less, 4000 mm or less, 3000 mm or less, 2000 mm or less, 1000 mm or less, 750 mm or less, 600 mm or less, about 500 mm or less, about 400 mm or less, about 300 mm or less, about 250 mm or less, about 200 mm or less, or about 100 mm or less. The second radius of curvature is about 100 mm or more, about 200 mm or more, about 300 mm or more, about 400 mm or more, about 500 mm or more, about 600 mm or more, about 700 mm or more, about 800 mm or more, or about 900 mm or more. In some embodiments, the curvature of the second curved surface is zero or flat.

[0058] The material of the frame and the first adhesive may satisfy one of the following conditions: (1) the ratio of the second thermal expansion coefficient to the first thermal expansion coefficient is less than 2, and the first adhesive includes an elongation of about 10% or less, and (2) the ratio of the second thermal expansion coefficient to the first thermal expansion coefficient is greater than or equal to 2, and the elongation of the first adhesive is greater than 10%, greater than about 50%, greater than about 100%, or greater than or equal to about 200%.

[0059] The glass article may also include a display bonded to the frame or the cover glass using an optically clear adhesive.The cover glass used may be a strengthened, or more specifically a chemically strengthened, aluminosilicate glass composition and may have a thickness of from 0.4 mm to 2.0 mm.

[0060] According to one or more additional embodiments, a glass article includes a cover glass sheet having a first major surface and a second major surface. The second major surface has a first curve, the first curve has a first radius of curvature, and the cover glass sheet includes a material having a first coefficient of thermal expansion. A frame has a support surface, the support surface has a second curve, and the second major surface of the cover glass sheet faces the support surface of the frame, so that the second curve is complementary to the first curve. The frame includes a material having a second coefficient of thermal expansion, and a first adhesive is disposed between the support surface of the frame and the second major surface of the cover glass sheet. The material of the frame and the first adhesive meet one of the following conditions: (1) the ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is less than 2, and the first adhesive includes an elongation of about 10% or less, and (2) the ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is greater than or equal to 2, and the elongation of the first adhesive is greater than 10%, greater than about 50%, greater than about 100%, or greater than or equal to about 200%.

[0061] As an aspect of some embodiments, the ratio of the second coefficient of thermal expansion relative to the first coefficient of thermal expansion is less than 2, and the first adhesive comprises an elongation of about 10% or less, and the first radius of curvature is about 600 mm or less, about 500 mm or less, about 400 mm or less, about 300 mm or less, about 250 mm or less, about 200 mm or less, or about 100 mm or less. The second major surface comprises a second region different from the first curved surface, wherein the second region comprises at least one of a two-dimensional surface region and a second curved surface. The support surface also comprises a second support region complementary to the second region of the second major surface.

[0062] As a further aspect of the embodiment, the second zone includes a second curved surface having a second radius of curvature, and the second radius of curvature is about 100 mm or greater, about 200 mm or greater, about 300 mm or greater, about 400 mm or greater, about 500 mm or greater, about 600 mm or greater, about 700 mm or greater, about 800 mm or greater, or about 900 mm or greater.

[0063] According to an additional embodiment of the present disclosure, a method for forming a curved glass article is provided. The method includes the step of applying a first adhesive having a first elongation to a first region of a frame or a cover glass sheet, the frame having a support surface, the support surface having a first curved surface in the first region. The step of molding the cover glass sheet to the frame is performed so that the cover glass sheet is consistent with the support surface of the frame. Then, the first adhesive is cured at a first temperature for a first period of time. The first curved surface includes a first radius of curvature, and the cover glass sheet includes a material having a first coefficient of thermal expansion. The frame includes a material having a second coefficient of thermal expansion. The material of the frame and the first adhesive meet one of the following conditions: (1) the ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is less than 2, and the first adhesive includes an elongation of about 10% or less, and (2) the ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is greater than or equal to 2, and the elongation is greater than 10%, greater than about 50%, greater than about 100%, or greater than or equal to about 200%.

[0064] As an aspect of the above method, the method further comprises a step of cooling the curved glass article after the curing step, and, after the cooling step, the curved glass article is not visually deformed compared to before the curing step. A second adhesive may be applied to a second area of ​​the frame or cover glass sheet, the second adhesive having a second elongation different from the first elongation.

[0065] According to one or more additional embodiments, a glass article includes a cover glass sheet having a first major surface and a second major surface, the second major surface having a first area and a second area, the first area having a first curved surface with a first radius of curvature, and the second area being different from the first area. A frame having a support surface, the support surface having a third area and a fourth area, such that the third area coincides with the first area of ​​the second major surface, and the fourth area coincides with the second area of ​​the second major surface. A first adhesive is disposed between the first area of ​​the support surface and the first area of ​​the second major surface, and a second adhesive is disposed between the fourth area of ​​the support surface and the second area of ​​the second major surface. The curvature of the first area is greater than the curvature of the second area, and the first adhesive has a first Young's modulus, and the second adhesive has a second Young's modulus that is less than the first Young's modulus.

[0066] In one aspect of this embodiment, the second region includes a second curved surface having a radius of curvature greater than the first radius of curvature, or the second region has no curvature. The first adhesive may have a first elongation, and the second adhesive may have a second elongation greater than the first elongation. In some embodiments, the first elongation is about 100% or less, about 50% or less, about 40% or less, about 30% or less, about 20% or less, or about 10% or less, and the second elongation is about 10% or more, about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, about 70% or more, about 80% or more, about 90% or more, about 100% or more, about 150% or more, about 200% or more, about 250% or more, or about 300% or more.

[0067] According to a further embodiment, a glass article is provided, which includes a cover glass sheet having a first major surface and a second major surface, the second major surface including a first area and a second area, the first area having a first curved surface with a first radius of curvature, and the second area is different from the first area. The article also includes a frame having a supporting surface, the supporting surface having a third area composed of a first frame material and a fourth area composed of a second frame material different from the first frame material. The second major surface of the cover glass sheet faces the supporting surface of the frame, and the third area includes a second curved surface complementary to the first curved surface and the fourth area is complementary to the second area. A first adhesive is disposed between the third area of ​​the supporting surface of the frame and the first area of ​​the second major surface of the cover glass sheet, the first adhesive having a first Young's modulus. A second adhesive is disposed between the fourth area of ​​the supporting surface of the frame and the second area of ​​the second major surface of the cover glass sheet, the second adhesive including a second Young's modulus different from the first Young's modulus.

[0068] As one aspect of this embodiment, the first frame material has a first coefficient of thermal expansion, and the second frame material includes a second coefficient of thermal expansion. The first coefficient of thermal expansion is less than the second coefficient of thermal expansion. The cover glass sheet has a third coefficient of thermal expansion, and the ratio of the first coefficient of thermal expansion to the third coefficient of thermal expansion may be about 2 or less, about 1.5 or less, about 1, or about 0.5 to 1.5. In another aspect, the ratio of the second coefficient of thermal expansion to the third coefficient of thermal expansion is about 2 or greater. The first frame material may include stainless steel, and the second frame material may include polycarbonate or ABS. The second adhesive may be a tape adhesive. As a further aspect, the fourth region includes at least one of a flat region and a second curved surface, and the second curved surface has a second radius of curvature greater than the first radius of curvature. The display can be bonded to the frame using an optically transparent adhesive, wherein the display is bonded to the frame in the fourth region. In one or more embodiments, the display can be bonded to the main surface of the cover glass sheet.

[0069] In yet another embodiment, a glass article is provided, comprising a cover glass sheet having a first major surface and a second major surface, the second major surface comprising a first region and a second region, the first region having a first curved surface with a first radius of curvature, and the second region being different from the first region. A frame comprises a first support surface and a second support surface, the first support surface comprising a first frame material and being consistent with the first region of the second major surface, and the second support surface comprising a second frame material and being consistent with the second region of the second major surface. A first adhesive is disposed between the first support surface and the first region of the second major surface, and a second adhesive is disposed between the second support surface and the second region of the second major surface. The first frame material is different from the second frame material, and the first region has a greater curvature than the second region.

[0070] As an aspect of this embodiment, the first frame material can include a first coefficient of thermal expansion and the second frame material can include a second coefficient of thermal expansion, wherein the first coefficient of thermal expansion is less than the second coefficient of thermal expansion.

[0071] Example

[0072] Comparative Examples 1 to 3, and Examples 4 to 8 were performed as discussed below and are summarized in Table 1.

[0073]

[0074] Table 1. Deformation of reference S-shaped components for different frame materials and adhesive materials

[0075] Comparative Example 1

[0076] In Comparative Example 1, a glass article was made using a 3.175 mm thick aluminum 5032H32 alloy using a reference product design framework (an S-shaped component having a concave surface with a radius of R150 mm and a convex surface with a radius of R250 mm). A chemically strengthened aluminosilicate cover glass sheet having a thickness of 0.55 mm was cold formed and formed using a 3M® 3000 glass sheet supplied by 3M, Inc. under the trade name 3M TM Scotch-Weld TMA toughened two-component epoxy adhesive of DP460 is attached to the surface of the frame, the epoxy adhesive having a 2:1 mixing ratio (ratio of matrix to accelerator). When this adhesive is cured at 49°C for 3 hours and measured on an aluminum substrate using the ASTMD 1002-72 standard, this adhesive has a relatively high overlap shear strength of 4800 psi. This adhesive is capable of holding a cold-formed 0.55 mm or 0.7 mm thick glass (e.g., the chemically strengthened glass used in this embodiment) in a shape having a radius of curvature of R250 mm (in both concave and convex directions), the glass having a length and width dimension of 91 mmX 152 mm and having an ink frame of 0.25 inches, with the structural adhesive only on the ink area. The cover glass sheet is cold-formed and attached to the frame material using the toughened epoxy adhesive in a vacuum table process. The cover adhesive is cured at a temperature of 95°C for 2 minutes. However, although the adhesive was able to hold the cold-formed glass on the aluminum curved substrate mold and pass environmental testing, severe deformation in the sample was observed during the curing process. After curing, the sample was cooled to room temperature and severe deformation was observed in both the display and non-display areas of the part. ATOS measurements were performed and the maximum deformations nominally in the CAD were 2.21 mm and -7.54 mm in the display and non-display areas, respectively.

[0077] Comparative Example 2

[0078] In Comparative Example 2, the settings and materials used are the same as in Comparative Example 1, except that the curing of the components is performed at 65°C for 20 minutes. After curing, the samples were cooled to room temperature, and severe deformations were observed in the components in both the display area and the non-display area. ATOS measurements were performed, and the maximum deformations nominally in the CAD were 1.06 mm and -3.19 mm in the display area and the non-display area, respectively. Combined with Comparative Example 1, these show the effect of higher temperature curing on product deformation. Due to the CTE mismatch between materials (e.g., glass and frame), higher temperatures during curing result in large deformations.

[0079] Comparative Example 3

[0080] In Comparative Example 3, the settings and materials used are the same as in Comparative Example 2, except that a frame of PC / ABS is used; a product design with an S-shaped component is used, wherein the S-shaped component has a concave surface with a radius of R65 mm and a convex surface with a radius of R150 mm; and the cover glass is a chemically strengthened aluminosilicate cover glass sheet with a thickness of 0.4 mm. The adhesive is cured at a temperature of 65°C for 20 minutes. After curing, the sample is cooled to room temperature (e.g., about 20°C), and severe deformation is observed in the component in both the display area and the non-display area. Comparative Example 3 cannot perform ATOS measurement. This severe deformation is evidence that the very different CTEs (glass to aluminum in Example 2, and glass to PC / ABS in Example 3) have a significant effect on product deformation.

[0081] Example 4

[0082] As an example of an implementation of the present disclosure, a glass product was made using a reference product design frame of ferritic stainless steel 410. This frame substrate was chosen because it has a coefficient of thermal expansion (CTE) close to that of a chemically strengthened aluminosilicate cover glass sheet. For reference, the CTE of the cover glass sheet is 7.88 μm / m / °C. Regarding frame materials, the CTE of aluminum (Al) 5052H32 alloy is 23.8 μm / m / °C, the CTE of MgAZ91D alloy is 25.2 μm / m / °C, the CTE of low carbon steel 1080 is 14.7 μm / m / °C, the CTE of ferritic stainless steel SS410 is 9.9 μm / m / °C, and the CTE of PC / ABS is 67 μm / m / °C. The cover glass sheet used in this example has a thickness of 0.55 mm and was cold formed and processed using a 3M TM Scotch-Weld TM DP460 toughened epoxy was attached to the frame material. The adhesive was cured at a temperature of 65°C for 20 minutes. After curing, the sample was cooled to room temperature and no visual deformation was observed in the part, either in the display area or the non-display area. ATOS measurements were performed and the maximum deformations nominal in the CAD were 0.20mm and -0.65mm in the display area and non-display area, respectively. These numbers are within the specification tolerances of the reference product design frame.

[0083] Example 5

[0084] As an example of an implementation of the present disclosure, Example 5 is similar to Example 4, except that curing is performed at 95°C for 2 minutes. After curing, the sample was cooled to room temperature, and no deformation was observed in the display area, while slight deformation was observed in the non-display area. ATOS measurements were performed, and the maximum deformations of the CAD nominal in the display area and the non-display area were 0.39 mm and -1.16 mm, respectively. This example can be compared with Example 4 and shows the effect of higher curing temperatures on product deformation. Due to small CTE mismatches between materials (e.g., glass and frame), higher temperatures during curing result in larger deformations.

[0085] Example 6

[0086] As an example of an embodiment of the present disclosure, Example 6 is similar to Example 4, except that the thickness of the frame is 1.905 mm (vs. 3.125 mm in Example 4). After curing, the sample was cooled to room temperature and no deformation was observed. ATOS measurements were performed, and the maximum deformations of the CAD nominal were 0.81 mm and -0.35 mm in the display area and non-display area, respectively.

[0087] Example 7

[0088] As an example of an embodiment of the present disclosure, Example 7 is similar to Example 6, except that curing was performed at 85°C for 5 minutes. After curing, the sample was cooled to room temperature, and no deformation was observed in the display area, while slight deformation was observed in the non-display area. ATOS measurement was performed, and the maximum deformation of the CAD nominal was 0.46 mm and -1.60 mm in the display area and non-display area, respectively.

[0089] Example 8

[0090] As an example of an embodiment of the present disclosure, Example 8 is similar to Example 4, except that a VHB adhesive was used. After curing, the sample was cooled to room temperature and no deformation was observed. This example can be compared to Example 4 and shows the effect of using a low modulus, high elongation adhesive with materials having a large CTE mismatch (e.g., glass and PC / ABS).

[0091] Figure 5 ATOS data from Examples 1, 2, 4, 5, 6, and 7 above are shown.

[0092] In addition to the above examples 1 to 8, finite element analysis (FEA) simulations were performed to understand the interaction of the frame and adhesive materials for product deformation. A model was developed for the flat portion (with a display opening in between) and simulations were performed for different materials as the temperature varied from 100°C to 20°C. Figure 6 As shown in . In all simulations, the thickness of the cover glass was kept constant at 0.55 mm. The frame materials evaluated were PC / ABS with a thickness of 8 mm, Al 5052H32 alloy with a thickness of 3.25 mm or 1.625 mm, mild steel 1080 with a thickness of 3.25 mm or 1.625 mm, and ferritic stainless steel SS410 with a thickness of 3.25 mm or 1.625 mm. Table 2 and Figure 7 and Figure 8 The data from these simulations are summarized.

[0093] Table 2. Deformation results of the flat portion in the display area with different frame materials and adhesive materials

[0094]

[0095] *The PC / ABS frame has a thickness of 8 mm in all examples.

[0096] The above examples demonstrate how embodiments of the present disclosure can provide improved glass products that minimize deformation of 3D cold-bent glass products.

[0097] In a particular embodiment, the glass substrate is bent to a curved shape in a mold (e.g., supported by a curved mold surface) via the application of a force (e.g., via a vacuum chuck, an electrostatic chuck, a vacuum bag, pressing, etc.). As disclosed herein, the curved shape is initially maintained at an elevated temperature using a first adhesive and maintained for a relatively short period of time to provide an initial wet compressive strength (i.e., a strength level that allows handling and processing that is lower than the final bonding strength) to maintain the curved shape of the glass substrate. Thereafter, the glass article is removed from the mold and the second adhesive is cured at room temperature for an extended period of time to provide a complete frame bond between the glass substrate and the frame. However, in an embodiment, a single adhesive may be used if the adhesive has a first early cure strength and a late structural cure strength. The glass article formed using this dual adhesive system as disclosed herein achieves a more economical manufacturing process. In particular, the glass article can spend less time at elevated temperatures and vacuum, which provides cost savings.

[0098] Strengthened glass properties

[0099] As described above, the glass substrate 16 can be strengthened. In one or more embodiments, the glass substrate 16 can be strengthened to include a compressive stress extending from the surface to a depth of compression (DOC). The compressive stress region is balanced by a central portion exhibiting tensile stress. At the DOC, the stress crosses from positive (compressive) stress to negative (tensile) stress.

[0100] In various embodiments, the glass substrate 16 can be mechanically strengthened by taking advantage of the mismatch in thermal expansion coefficients between portions of the article to produce regions of compressive stress and a central region exhibiting tensile stress. In some embodiments, the glass substrate can be thermally strengthened by heating the glass to a temperature above the glass transition point and then rapidly quenching.

[0101] In various embodiments, the glass substrate 16 can be chemically strengthened by ion exchange. During the ion exchange process, ions located at or near the surface of the glass substrate are replaced by or exchanged with larger ions of the same valence or oxidation state. In those embodiments in which the glass substrate comprises an alkali aluminosilicate glass, the ions and larger ions in the surface layer of the article are monovalent alkali metal cations, such as Li + 、Na + , K + , Rb + , and Cs + Alternatively, the monovalent cations in the surface layer may be replaced by monovalent cations other than alkali metal cations, such as Ag+, etc. In these embodiments, the monovalent ions (or cations) exchanged into the glass substrate generate stress.

[0102] The ion exchange process is typically performed by immersing the glass substrate in a molten salt bath (or two or more molten salt baths) containing larger ions to be exchanged with smaller ions in the glass substrate. It should be noted that a salt water bath may also be utilized. In addition, the composition of one or more baths may include more than one type of larger ion (e.g., Na + and K + ) or a single larger ion. Those skilled in the art will appreciate that the parameters of the ion exchange process (including but not limited to bath composition and temperature, immersion time, number of immersions of the glass substrate in one or more salt baths, use of multiple salt baths, additional steps such as annealing, washing, etc.) are generally determined by the composition of the glass substrate (including the structure of the article and any crystalline phases present) and the desired DOC and CS of the glass substrate resulting from strengthening. Exemplary molten salt bath compositions may include nitrates, sulfates, and chlorides of larger alkali metal ions. Typical nitrates include KNO 3 、NaNO 3 、LiNO 3 、NaSO 4And combinations thereof. The temperature of the molten salt bath is typically in the range of from about 380°C to up to about 450°C, and the immersion time is in the range of from about 15 minutes to up to about 100 hours, depending on the thickness of the glass substrate, the bath temperature, and the glass (or monovalent ion) diffusivity. However, temperatures and immersion times different from those described above may also be used.

[0103] In one or more embodiments, the glass substrate may be immersed in a 100% NaNO solution at a temperature of from about 370°C to about 480°C. 3 、100%KNO 3 , or NaNO 3 and KNO 3 In some embodiments, the glass substrate may be immersed in a molten salt bath comprising from about 5% to about 90% KNO 3 and from about 10% to about 95% NaNO 3 In one or more embodiments, the glass substrate may be immersed in the second bath after being immersed in the first bath. The first bath and the second bath may have different compositions and / or temperatures from each other. The immersion time in the first bath and the second bath may vary. For example, the immersion in the first bath may be longer than the immersion in the second bath.

[0104] In one or more embodiments, the glass substrate may be immersed in a solution containing NaNO at a temperature below about 420° C. (eg, about 400° C. or about 380° C.). 3 and KNO 3 (e.g., 49% / 51%, 50% / 50%, 51% / 49%) in a molten mixed salt bath for less than about 5 hours, or even about 4 hours or less.

[0105] The ion exchange conditions can be modulated to provide a "peak" or increase the slope of the stress profile at or near the surface of the resulting glass substrate. The peak can result in a greater surface CS value. Due to the unique properties of the glass compositions used in the glass substrates described herein, this peak can be achieved by a single bath or multiple baths, where one or more baths have a single composition or a mixed composition.

[0106] In one or more embodiments, where more than one monovalent ion is exchanged into the glass substrate, different monovalent ions may be exchanged to different depths within the glass substrate (and produce different amounts of stress at different depths within the glass substrate). The relative depths of the resulting stress-producing ions may be determined and result in different characteristics of the stress distribution.

[0107] CS is measured by means known in the art such as by using a surface stress meter (FSM) using a commercially available instrument such as the FSM-6000 manufactured by Orihara Industrial Co., Ltd. (Japan). Surface stress measurements rely on accurate measurements of the stress optical coefficient (SOC) associated with the birefringence of the glass. The SOC is then measured by methods known in the art such as the fiber bending method and the four-point bending method (both described in ASTM standard C770-98 (2013) entitled "Standard Test Method for Measurement of Glass Stress-Optical Coefficient", the contents of which are incorporated herein by reference as a whole), and the bulk cylinder method. As used herein, CS may be the "maximum compressive stress" which is the highest compressive stress value measured within the compressive stress layer. In some embodiments, the maximum compressive stress is located at the surface of the glass substrate. In other embodiments, the maximum compressive stress may occur at a certain depth below the surface, resulting in a "buried peak" in the compression distribution.

[0108] DOC can be measured by FSM or by a scattered light polarizer (SCALP) (such as the SCALP-04 scattered light polarizer available from Glasstress Ltd., Tallinn Estonia), depending on the strengthening method and conditions. When the glass substrate is chemically strengthened by an ion exchange process, either FSM or SCALP can be used depending on which ions are exchanged into the glass substrate. In the case where stress is generated in the glass substrate by exchanging potassium ions into the glass substrate, FSM is used to measure DOC. In the case where stress is generated by exchanging sodium ions into the glass substrate, SCALP is used to measure DOC. In the case where stress is generated in the glass substrate by exchanging both potassium ions and sodium ions into the glass substrate, DOC is measured by SCALP because it is believed that the exchange depth of sodium indicates DOC, and the exchange depth of potassium ions indicates a change in the magnitude of compressive stress (but not a change from compressive stress to tensile stress); the exchange depth of potassium ions in such a glass substrate is measured by FSM. Central tension or CT is the maximum tensile stress and is measured by SCALP.

[0109] In one or more embodiments, the glass substrate may be strengthened to exhibit a DOC described as a portion of the thickness T1 of the glass substrate (as described herein). For example, in one or more embodiments, the DOC may be equal to or greater than about 0.05T1, equal to or greater than about 0.1T1, equal to or greater than about 0.11T1, equal to or greater than about 0.12T1, equal to or greater than about 0.13T1, equal to or greater than about 0.14T1, equal to or greater than about 0.15T1, equal to or greater than about 0.16T1, equal to or greater than about 0.17T1, equal to or greater than about 0.18T1, equal to or greater than about 0.19T1, equal to or greater than about 0.2T1, equal to or greater than about 0.21T1. In some embodiments, the DOC may be from about 0.08T1 to about 0.25T1, from about 0.09T1 to about 0.25T1, from about 0.18T1 to about 0.25T1, from about 0.11T1 to about 0.25T1, from about 0.12T1 to about 0.25T1, from about 0.13T1 to about 0.25T1, from about 0.14T1 to about 0.25T1, from about 0.15T1 to about 0.25T1, from about 0.08T1 to about 0. In some cases, the DOC may be about 20 μm or less.In one or more embodiments, the DOC may be about 40 μm or greater (e.g., from about 40 μm to about 300 μm, from about 50 μm to about 300 μm, from about 60 μm to about 300 μm, from about 70 μm to about 300 μm, from about 80 μm to about 300 μm, from about 90 μm to about 300 μm, from about 100 μm to about 300 μm, from about 110 μm to about 300 μm, from about 120 μm to about 300 μm, from about 140 μm to about 300 μm, from about 150 μm to about 300 μm, from about 40 μm to about 290 μm, from about 40 μm to about 280 μm). In some embodiments, the DOC is from about 40 μm to about 200 μm, from about 40 μm to about 180 μm, from about 40 μm to about 160 μm, from about 40 μm to about 150 μm, from about 40 μm to about 140 μm, from about 40 μm to about 130 μm, from about 40 μm to about 120 μm, from about 40 μm to about 110 μm, or from about 40 μm to about 100 μm). In other embodiments, the DOC falls within any of the exact numerical ranges set forth in this paragraph.

[0110] In one or more embodiments, the strengthened glass substrate may have a CS (which may be seen at the surface or at a depth within the glass substrate) of about 200 MPa or greater, 300 MPa or greater, 400 MPa or greater, about 500 MPa or greater, about 600 MPa or greater, about 700 MPa or greater, about 800 MPa or greater, about 900 MPa or greater, about 930 MPa or greater, about 1000 MPa or greater, or about 1050 MPa or greater.

[0111] In one or more embodiments, the strengthened glass substrate may have a maximum tensile stress or central tension (CT) of about 20 MPa or more, about 30 MPa or more, about 40 MPa or more, about 45 MPa or more, about 50 MPa or more, about 60 MPa or more, about 70 MPa or more, about 75 MPa or more, about 80 MPa or more, or about 85 MPa or more. In some embodiments, the maximum tensile stress or central tension (CT) may be in the range from about 40 MPa to about 100 MPa. In other embodiments, the CS falls within the exact numerical ranges set forth in this paragraph.

[0112] Glass composition

[0113] Suitable glass compositions for the glass substrate 16 include soda-lime glass, aluminosilicate glass, borosilicate glass, boroaluminosilicate glass, alkali-containing aluminosilicate glass, alkali-containing borosilicate glass, and alkali-containing boroaluminosilicate glass.

[0114] Unless otherwise indicated, the glass compositions disclosed herein are described in terms of mole percent (mol %) as based on oxide analysis.

[0115] In one or more embodiments, the glass composition may include SiO in an amount within the range of: 2 : range from about 66 mol % to about 80 mol %, from about 67 mol % to about 80 mol %, from about 68 mol % to about 80 mol %, from about 69 mol % to about 80 mol %, from about 70 mol % to about 80 mol %, from about 72 mol % to about 80 mol %, from about 65 mol % to about 78 mol %, from about 65 mol % to about 76 mol %, from about 65 mol % to about 75 mol %, from about 65 mol % to about 74 mol %, from about 65 mol % to about 72 mol %, or from about 65 mol % to about 70 mol %, and all ranges and subranges therebetween.

[0116] In one or more embodiments, the glass composition includes Al in an amount of 2 O 3 : greater than about 4 mol%, or greater than about 5 mol%. In one or more embodiments, the glass composition includes Al2O3 in a content ranging from greater than about 7 mol% to about 15 mol%, from greater than about 7 mol% to about 14 mol%, from about 7 mol% to about 13 mol%, from about 4 mol% to about 12 mol%, from about 7 mol% to about 11 mol%, from about 8 mol% to about 15 mol%, from about 9 mol% to about 15 mol%, from about 10 mol% to about 15 mol%, from about 11 mol% to about 15 mol%, or from about 12 mol% to about 15 mol%, and all ranges and sub-ranges therebetween. In one or more embodiments, the upper limit of Al2O3 may be about 14 mol%, 14.2 mol%, 14.4 mol%, 14.6 mol%, or 14.8 mol%.

[0117] In one or more embodiments, the glass article is described as an aluminosilicate glass article or includes an aluminosilicate glass composition. In these embodiments, the glass composition or article formed therefrom includes SiO 2 and Al 2 O 3, and is not a soda-lime silicate glass. In this regard, the glass composition or article formed therefrom includes Al in an amount of 2 O 3 : about 2 mol % or greater, 2.25 mol % or greater, 2.5 mol % or greater, about 2.75 mol % or greater, about 3 mol % or greater.

[0118] In one or more embodiments, the glass composition includes B 2 O 3 (For example, about 0.01 mol% or greater). In one or more embodiments, the glass composition has a B content within the following range: 2 O 3 : range from about 0 mol% to about 5 mol%, from about 0 mol% to about 4 mol%, from about 0 mol% to about 3 mol%, from about 0 mol% to about 2 mol%, from about 0 mol% to about 1 mol%, from about 0 mol% to about 0.5 mol%, from about 0.1 mol% to about 5 mol%, from about 0.1 mol% to about 4 mol%, from about 0.1 mol% to about 3 mol%, from about 0.1 mol% to about 2 mol%, from about 0.1 mol% to about 1 mol%, from about 0.1 mol% to about 0.5 mol%, and all ranges and subranges therebetween. In one or more embodiments, the glass composition is substantially free of B 2 O 3 .

[0119] As used herein, the phrase "substantially free" with respect to a component of a composition means that the component is not actively or intentionally added to the composition during initial compounding, but may be present as an impurity in an amount of less than about 0.001 mol%.

[0120] In one or more embodiments, the glass composition optionally includes P 2 O 5 (e.g., about 0.01 mol% or greater). In one or more embodiments, the glass composition includes a non-zero amount of up to and including 2 mol%, 1.5 mol%, 1 mol%, or 0.5 mol% of P. 2 O 5 In one or more embodiments, the glass composition is substantially free of P 2 O 5 .

[0121] In one or more embodiments, the glass composition may include R 2 The total amount of O (such as Li 2 O、Na 2 O.K 2 O、Rb2 O, and Cs 2 O) is greater than or equal to about 8 mol%, greater than or equal to about 10 mol%, or greater than or equal to about 12 mol%. In some embodiments, the glass composition includes R in the following ranges: 2 The total amount of O is in the range of from about 8 mol% to about 20 mol%, from about 8 mol% to about 18 mol%, from about 8 mol% to about 16 mol%, from about 8 mol% to about 14 mol%, from about 8 mol% to about 12 mol%, from about 9 mol% to about 20 mol%, from about 10 mol% to about 20 mol%, from about 11 mol% to about 20 mol%, from about 12 mol% to about 20 mol%, from about 13 mol% to about 20 mol%, from about 10 mol% to about 14 mol%, or from 11 mol% to about 13 mol%, and all ranges and sub-ranges therebetween. In one or more embodiments, the glass composition may be substantially free of Rb. 2 O、Cs 2 O, or Rb 2 O and Cs 2 O both. In one or more embodiments, R 2 O may include only the Li 2 O、Na 2 O and K 2 In one or more embodiments, the glass composition may include a selected from Li 2 O、Na 2 O and K 2 O, wherein the alkali metal oxide is present in an amount greater than about 8 mol % or greater.

[0122] In one or more embodiments, the glass composition includes Na in an amount of 2 O: greater than or equal to about 8 mol%, greater than or equal to about 10 mol%, or greater than or equal to about 12 mol%. In one or more embodiments, the composition includes Na in an amount within the range of 2 O: a range from about 8 mol% to about 20 mol%, from about 8 mol% to about 18 mol%, from about 8 mol% to about 16 mol%, from about 8 mol% to about 14 mol%, from about 8 mol% to about 12 mol%, from about 9 mol% to about 20 mol%, from about 10 mol% to about 20 mol%, from about 11 mol% to about 20 mol%, from about 12 mol% to about 20 mol%, from about 13 mol% to about 20 mol%, from about 10 mol% to about 14 mol%, or from 11 mol% to about 16 mol%, and all ranges and subranges therebetween.

[0123] In one or more embodiments, the glass composition includes less than about 4 mol% K 2 O, less than about 3 mol% K 2 O, or less than about 1 mol% K 2 In some cases, the glass composition may include K in an amount within the range of 2 O: from about 0 mol% to about 4 mol%, from about 0 mol% to about 3.5 mol%, from about 0 mol% to about 3 mol%, from about 0 mol% to about 2.5 mol%, from about 0 mol% to about 2 mol%, from about 0 mol% to about 1.5 mol%, from about 0 mol% to about 1 mol%, from about 0 mol% to about 0.5 mol%, from about 0 mol% to about 0.2 mol%, from about 0 mol% to about 0.1 mol%, from about 0.5 mol% to about 4 mol%, from about 0.5 mol% to about 3.5 mol%, from about 0.5 mol% to about 3 mol%, from about 0.5 mol% to about 2.5 mol%, from about 0.5 mol% to about 2 mol%, from about 0.5 mol% to about 1.5 mol%, or from about 0.5 mol% to about 1 mol%, and all ranges and sub-ranges therebetween. In one or more embodiments, the glass composition may be substantially free of K 2 O.

[0124] In one or more embodiments, the glass composition is substantially free of Li 2 O.

[0125] In one or more embodiments, the composition contains Na 2 The amount of O can be greater than that of Li 2 O. In some cases, Na 2 The amount of O can be greater than that of Li 2 O and K 2 In one or more optional embodiments, the composition includes Li 2 The amount of O can be greater than that of Na 2 The amount of O or Na 2 O and K 2 The combined amount of O.

[0126] In one or more embodiments, the glass composition may include a total amount of RO (which is the total amount of alkaline earth oxides such as CaO, MgO, BaO, ZnO, and SrO) in the range from about 0 mol% to about 2 mol%. In some embodiments, the glass composition includes a non-zero amount of RO up to about 2 mol%. In one or more embodiments, the glass composition includes RO in an amount ranging from about 0 mol% to about 1.8 mol%, from about 0 mol% to about 1.6 mol%, from about 0 mol% to about 1.5 mol%, from about 0 mol% to about 1.4 mol%, from about 0 mol% to about 1.2 mol%, from about 0 mol% to about 1 mol%, from about 0 mol% to about 0.8 mol%, from about 0 mol% to about 0.5 mol%, and all ranges and sub-ranges therebetween.

[0127] In one or more embodiments, the glass composition includes CaO in an amount less than about 1 mol%, less than about 0.8 mol%, or less than about 0.5 mol%. In one or more embodiments, the glass composition is substantially free of CaO.

[0128] In some embodiments, the glass composition includes MgO in an amount ranging from about 0 mol % to about 7 mol %, from about 0 mol % to about 6 mol %, from about 0 mol % to about 5 mol %, from about 0 mol % to about 4 mol %, from about 0.1 mol % to about 7 mol %, from about 0.1 mol % to about 6 mol %, from about 0.1 mol % to about 5 mol %, from about 0.1 mol % to about 4 mol %, from about 1 mol % to about 7 mol %, from about 2 mol % to about 6 mol %, or from about 3 mol % to about 6 mol %, and all ranges and sub-ranges therebetween.

[0129] In one or more embodiments, the glass composition includes ZrO in an amount of 2 : equal to or less than about 0.2 mol%, less than about 0.18 mol%, less than about 0.16 mol%, less than about 0.15 mol%, less than about 0.14 mol%, less than about 0.12 mol%. In one or more embodiments, the glass composition includes ZrO in an amount within the following ranges: 2: In the range from about 0.01 mol% to about 0.2 mol%, from about 0.01 mol% to about 0.18 mol%, from about 0.01 mol% to about 0.16 mol%, from about 0.01 mol% to about 0.15 mol%, from about 0.01 mol% to about 0.14 mol%, from about 0.01 mol% to about 0.12 mol%, or from about 0.01 mol% to about 0.10 mol%, and all ranges and sub-ranges therebetween.

[0130] In one or more embodiments, the glass composition includes SnO in an amount of 2 : equal to or less than about 0.2 mol%, less than about 0.18 mol%, less than about 0.16 mol%, less than about 0.15 mol%, less than about 0.14 mol%, less than about 0.12 mol%. In one or more embodiments, the glass composition includes SnO in an amount within the following ranges: 2 : A range from about 0.01 mol% to about 0.2 mol%, from about 0.01 mol% to about 0.18 mol%, from about 0.01 mol% to about 0.16 mol%, from about 0.01 mol% to about 0.15 mol%, from about 0.01 mol% to about 0.14 mol%, from about 0.01 mol% to about 0.12 mol%, or from about 0.01 mol% to about 0.10 mol%, and all ranges and sub-ranges therebetween.

[0131] In one or more embodiments, the glass composition may include an oxide that imparts color or tint to the glass article. In some embodiments, the glass composition includes an oxide that prevents the glass article from discoloring when the glass article is exposed to ultraviolet radiation. Examples of such oxides include, without limitation, oxides of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Ce, W, and Mo.

[0132] In one or more embodiments, the glass composition includes Fe 2 O 3 In some embodiments, the glass composition is substantially free of Fe. In one or more embodiments, the glass composition includes Fe in an amount of up to (and including) about 1 mol%. 2 O 3 : equal to or less than about 0.2 mol%, less than about 0.18 mol%, less than about 0.16 mol%, less than about 0.15 mol%, less than about 0.14 mol%, less than about 0.12 mol%. In one or more embodiments, the glass composition includes Fe in an amount within the following ranges: 2 O 3: range from about 0.01 mol % to about 0.2 mol %, from about 0.01 mol % to about 0.18 mol %, from about 0.01 mol % to about 0.16 mol %, from about 0.01 mol % to about 0.15 mol %, from about 0.01 mol % to about 0.14 mol %, from about 0.01 mol % to about 0.12 mol %, or from about 0.01 mol % to about 0.10 mol %, and all ranges and sub-ranges therebetween.

[0133] The glass composition includes TiO 2 In the case of TiO 2 The TiO may be present in an amount of about 5 mol% or less, about 2.5 mol% or less, about 2 mol% or less, or about 1 mol% or less. In one or more embodiments, the glass composition may be substantially free of TiO 2 .

[0134] The exemplary glass composition includes SiO in an amount ranging from about 65 mol % to about 75 mol %. 2 , Al in an amount ranging from about 8 mol% to about 14 mol% 2 O 3 , Na in an amount ranging from about 12 mol % to about 17 mol % 2 O, K in an amount ranging from about 0 mol% to about 0.2 mol% 2 O, and MgO in an amount ranging from about 1.5 mol% to about 6 mol%. Optionally, SnO in an amount further disclosed herein may be included. 2 It should be understood that while the foregoing glass composition paragraphs express approximate ranges, in other embodiments, the glass substrate 134 can be made of any glass composition that falls within any of the exact numerical ranges discussed above.

[0135] Aspect (1) of the present disclosure relates to a glass product, comprising: a cover glass sheet having a first main surface and a second main surface, the second main surface comprising a first area and a second area, the first area comprising a first curved surface having a first radius of curvature, the second area being different from the first area; a frame having a supporting surface, the supporting surface comprising a third area formed of a first frame material and a fourth area formed of a second frame material different from the first frame material, wherein the second main surface of the cover glass sheet faces the supporting surface of the frame, and wherein the third area comprises a second curved surface complementary to the first curved surface and the fourth area is complementary to the second area; a first adhesive disposed between the third area of ​​the supporting surface of the frame and the first area of ​​the second main surface of the cover glass sheet, the first adhesive comprising a first Young's modulus; and a second adhesive disposed between the fourth area of ​​the supporting surface of the frame and the second area of ​​the second main surface of the cover glass sheet, the second adhesive comprising a second Young's modulus different from the first Young's modulus.

[0136] Aspect (2) of the present disclosure relates to the glass article of aspect (1), wherein the first frame material comprises a first coefficient of thermal expansion and the second frame material comprises a second coefficient of thermal expansion.

[0137] Aspect (3) of the present disclosure relates to the glass article of aspect (2), wherein the first coefficient of thermal expansion is less than the second coefficient of thermal expansion.

[0138] Aspect (4) of the present disclosure relates to a glass article as described in aspect (2) or aspect (3), wherein the cover glass sheet includes a third coefficient of thermal expansion, and wherein the ratio of the first coefficient of thermal expansion to the third coefficient of thermal expansion is about 2 or less, about 1.5 or less, about 1, or about 0.5 to 1.5.

[0139] Aspect (5) of the present disclosure relates to the glass article of aspect (3) or aspect (4), wherein a ratio of the second coefficient of thermal expansion to the third coefficient of thermal expansion is about 2 or greater.

[0140] Aspect (6) of the present disclosure relates to the glass article as described in any one of aspects (1) to (5), wherein the first frame material comprises stainless steel.

[0141] Aspect (7) of the present disclosure relates to the glass article as described in any one of aspects (1) to (6), wherein the second frame material comprises polycarbonate or ABS.

[0142] Aspect (8) of the present disclosure relates to the glass article as described in any one of aspects (1) to (7), wherein the second adhesive is a tape adhesive.

[0143] Aspect (9) of the present disclosure relates to the glass article as described in any one of aspects (1) to (8), wherein the fourth region includes at least one of a flat region and a second curved surface, the second curved surface having a second radius of curvature greater than the first radius of curvature.

[0144] Aspect (10) of the present disclosure relates to the glass article as described in any one of aspects (1) to (9), further comprising a display bonded to the frame using an optically clear adhesive.

[0145] Aspect (11) of the present disclosure relates to the glass article as described in aspect (10), wherein the display is bonded to the frame in the fourth region.

[0146] Aspect (12) of the present disclosure relates to the glass article as described in any one of aspects (1) to (11), wherein the cover glass sheet comprises a strengthened aluminosilicate glass composition.

[0147] Aspect (13) of the present disclosure relates to the glass article as described in any one of aspects (1) to (12), wherein the cover glass sheet has a thickness of from 0.4 mm to 2.0 mm.

[0148] Aspect (14) of the present disclosure relates to the glass article as described in any one of aspects (1) to (13), further comprising a surface treatment on the first major surface of the cover glass sheet.

[0149] Aspect (15) of the present disclosure relates to the glass article of aspect (14), wherein the surface treatment is at least one of an anti-glare treatment, an anti-reflective coating, and an easy-to-clean coating.

[0150] Aspect (16) of the present disclosure relates to the glass article as described in any one of aspects (1) to (15), wherein the first curved surface and the second curved surface each include at least one location where the radius of curvature is 100 mm or less.

[0151] Aspect (17) of the present disclosure relates to a vehicle interior, comprising the glass article according to any one of aspects (1) to (16).

[0152] Aspect (18) relates to a glass product, comprising: a cover glass sheet having a first main surface and a second main surface, the second main surface comprising a first area and a second area, the first area comprising a first curved surface having a first radius of curvature, and the second area being different from the first area; a frame comprising a first supporting surface and a second supporting surface, the first supporting surface comprising a first frame material and being consistent with the first area of ​​the second main surface, and the second supporting surface comprising a second frame material and being consistent with the second area of ​​the second main surface, a first adhesive arranged between the first supporting surface and the first area of ​​the second main surface; and a second adhesive arranged between the second supporting surface and the second area of ​​the second main surface, wherein the first frame material is different from the second frame material, and wherein the first area comprises a curvature greater than that of the second area.

[0153] Aspect (19) relates to the glass article of aspect (18), wherein the first frame material comprises a first coefficient of thermal expansion and the second frame material comprises a second coefficient of thermal expansion.

[0154] Aspect (20) relates to the glass article of aspect (19), wherein the first coefficient of thermal expansion is less than the second coefficient of thermal expansion.

[0155] Aspect (21) relates to a glass article as described in aspect (19) or aspect (20), wherein the cover glass sheet includes a third thermal expansion coefficient, and wherein the ratio of the first thermal expansion coefficient to the third thermal expansion coefficient is about 2 or less, about 1.5 or less, about 1, or about 0.5 to 1.5.

[0156] Aspect (22) relates to the glass article of aspect (20) or aspect (21), wherein a ratio of the second coefficient of thermal expansion to the third coefficient of thermal expansion is about 2 or greater.

[0157] Aspect (23) relates to the glass article as described in any one of aspects (18) to (22), wherein the first binder comprises a first Young's modulus, and the second binder comprises a second Young's modulus less than the first Young's modulus.

[0158] Aspect (24) relates to the glass article of any one of aspects (18) to (23), wherein the first adhesive comprises a first elongation and the second adhesive comprises a second elongation greater than the first elongation.

[0159] Aspect (25) relates to a glass article as described in aspect (24), wherein the first elongation is about 100% or less, about 50% or less, about 40% or less, about 30% or less, about 20% or less, or about 10% or less.

[0160] Aspect (26) relates to a glass article as described in aspect (24) or aspect (25), wherein the second elongation is about 10% or greater, about 20% or greater, about 30% or greater, about 40% or greater, about 50% or greater, about 60% or greater, about 70% or greater, about 80% or greater, about 90% or greater, about 100% or greater, about 150% or greater, about 200% or greater, about 250% or greater, or about 300% or greater.

[0161] Aspect (27) relates to the glass article of any one of aspects (18) to (23), wherein the first frame material comprises stainless steel.

[0162] Aspect (28) relates to the glass article as described in any one of aspects (18) to (27), wherein the second frame material comprises polycarbonate or ABS.

[0163] Aspect (29) relates to the glass article as described in any one of aspects (18) to (28), wherein the second adhesive is a tape adhesive.

[0164] Aspect (30) relates to a glass article as described in any one of aspects (18) to (29), wherein the fourth region includes at least one of a flat region and a second curved surface, the second curved surface having a second radius of curvature greater than the first radius of curvature.

[0165] Aspect (31) relates to the glass article of any one of aspects (18) to (30), further comprising a display bonded to the frame using an optically clear adhesive.

[0166] Aspect (32) relates to the glass article of aspect (31), wherein the display is bonded to the frame in the fourth region.

[0167] Aspect (33) relates to the glass article of any one of aspects (18) to (32), wherein the cover glass sheet comprises a strengthened aluminosilicate glass composition.

[0168] Aspect (34) relates to the glass article as described in any one of aspects (18) to (33), wherein the cover glass sheet has a thickness of from 0.4 mm to 2.0 mm.

[0169] Aspect (35) relates to the glass article as described in any one of aspects (18) to (34), further comprising a surface treatment on the first major surface of the cover glass sheet.

[0170] Aspect (36) relates to the glass article of aspect (35), wherein the surface treatment is at least one of an anti-glare treatment, an anti-reflective coating, and an easy-to-clean coating.

[0171] Aspect (37) relates to the glass article as described in any one of aspects (18) to (36), wherein the first curved surface and the second curved surface each include at least one location where the radius of curvature is 100 mm or less.

[0172] Aspect (38) relates to a vehicle interior, comprising the glass article according to any one of aspects (18) to (37).

[0173] Aspect (39) relates to a glass product, comprising: a cover glass sheet having a first main surface and a second main surface, the second main surface comprising a first curved surface having a first radius of curvature and a second curved surface having a second radius of curvature different from the first radius of curvature; a frame having a supporting surface, the supporting surface comprising a third curved surface and a fourth curved surface, wherein the second main surface of the cover glass sheet faces the supporting surface of the frame, and wherein the third curved surface is complementary to the first curved surface and the fourth curved surface is complementary to the second curved surface; a first adhesive arranged between the third curved surface of the supporting surface of the frame and the first curved surface of the second main surface of the cover glass sheet, the first adhesive comprising a first elongation; and a second adhesive arranged between the fourth curved surface of the supporting surface of the frame and the second curved surface of the second main surface of the cover glass sheet, the second adhesive comprising a second elongation different from the first elongation.

[0174] Aspect (40) relates to the glass article of aspect (39), wherein the first binder comprises a first Young's modulus and the second binder comprises a second Young's modulus different from the first Young's modulus.

[0175] Aspect (41) relates to the glass article of aspect (39) or (40), wherein the first radius of curvature is smaller than the second radius of curvature, and wherein the first elongation is smaller than the second elongation.

[0176] Aspect (42) relates to the glass article of aspect (40) or (41), wherein the first Young's modulus is greater than the second Young's modulus.

[0177] Aspect (43) relates to a glass article as described in any of aspects (39) to (42), wherein the first elongation is about 100% or less, about 50% or less, about 40% or less, about 30% or less, about 20% or less, or about 10% or less.

[0178] Aspect (44) relates to a glass article as described in any of aspects (39) to (43), wherein the second elongation is about 10% or greater, about 20% or greater, about 30% or greater, about 40% or greater, about 50% or greater, about 60% or greater, about 70% or greater, about 80% or greater, about 90% or greater, about 100% or greater, about 150% or greater, about 200% or greater, about 250% or greater, or about 300% or greater.

[0179] Aspect (45) relates to the glass article as described in any one of aspects (39) to (44), wherein the cover glass sheet comprises a material having a first coefficient of thermal expansion and the frame comprises a material having a second coefficient of thermal expansion.

[0180] Aspect (46) relates to the glass article of aspect (45), wherein a ratio of the second coefficient of thermal expansion relative to the first coefficient of thermal expansion is less than 2, and the first binder comprises an elongation of about 10% or less.

[0181] Aspect (47) relates to a glass article as described in any of Aspects (45) or (46), wherein the ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is greater than or equal to 2, and the elongation of the first adhesive is greater than 10%, greater than about 50%, greater than about 100%, or greater than or equal to about 200%.

[0182] Aspect (48) relates to the glass article of any one of aspects (39) to (47), wherein the material of the frame comprises a metal, an alloy, or a polymer.

[0183] Aspect (49) relates to the glass article of aspect (48), wherein the material of the frame comprises at least one of stainless steel, polycarbonate (PC), acrylonitrile butadiene styrene (ABS), or a magnesium alloy.

[0184] Aspect (50) relates to the glass article of any one of aspects (39) to (49), wherein at least one of the first adhesive and the second adhesive comprises a toughened epoxy, acrylic, urethane, or silicone.

[0185] Aspect (51) relates to a glass article as described in any of aspects (39) to (50), wherein the first radius of curvature is 600 mm or less, about 500 mm or less, about 400 mm or less, about 300 mm or less, about 250 mm or less, about 200 mm or less, or about 100 mm or less.

[0186] Aspect (52) relates to a glass article as described in any of aspects (39) to (51), wherein the second radius of curvature is about 100 mm or greater, about 200 mm or greater, about 300 mm or greater, about 400 mm or greater, about 500 mm or greater, about 600 mm or greater, about 700 mm or greater, about 800 mm or greater, or about 900 mm or greater.

[0187] Aspect (53) relates to the glass article of any one of aspects (39) to (52), wherein the second curved surface has a curvature of zero.

[0188] Aspect (54) relates to a glass article as described in any one of aspects (39) to (53), wherein the material of the frame and the first adhesive satisfy one of the following conditions: (1) the ratio of the second thermal expansion coefficient to the first thermal expansion coefficient is less than 2, and the first adhesive includes an elongation of about 10% or less, and (2) the ratio of the second thermal expansion coefficient to the first thermal expansion coefficient is greater than or equal to 2, and the elongation of the first adhesive is greater than 10%, greater than about 50%, greater than about 100%, or greater than or equal to about 200%.

[0189] Aspect (55) relates to the glass article of any one of aspects (39) to (54), further comprising a display bonded to the frame using an optically clear adhesive.

[0190] Aspect (56) relates to a vehicle interior, comprising the glass article according to any one of aspects (39) to (55).

[0191] Aspect (57) relates to a glass product, comprising: a cover glass sheet having a first major surface and a second major surface, the second major surface comprising a first curved surface having a first radius of curvature, the cover glass sheet comprising a material having a first coefficient of thermal expansion; a frame having a supporting surface, the supporting surface comprising a second curved surface, wherein the second major surface of the cover glass sheet faces the supporting surface of the frame, and wherein the second curved surface is complementary to the first curved surface, the frame comprising a material having a second coefficient of thermal expansion; and a first adhesive arranged between the supporting surface of the frame and the second major surface of the cover glass sheet, wherein the material of the frame and the first adhesive satisfy one of the following conditions: (1) the ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is less than 2, and the first adhesive comprises an elongation of about 10% or less, and (2) the ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is greater than or equal to 2, and the elongation of the first adhesive is greater than 10%, greater than about 50%, greater than about 100%, or greater than or equal to about 200%.

[0192] Aspect (58) relates to a glass article as described in aspect (57), wherein the ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is less than 2, and the first adhesive comprises an elongation of about 10% or less, and wherein the first radius of curvature is about 600 mm or less, about 500 mm or less, about 400 mm or less, about 300 mm or less, about 250 mm or less, about 200 mm or less, or about 100 mm or less.

[0193] Aspect (59) relates to a glass article as described in aspect (57) or (58), wherein the second major surface includes a second area different from the first curved surface, the second area includes at least one of a two-dimensional surface area and a second curved surface, and wherein the support surface includes a second support area complementary to the second area of ​​the second major surface.

[0194] Aspect (60) relates to a glass article as described in aspect (59), wherein the second zone includes the second curved surface, and the second curved surface has a second radius of curvature of about 100 mm or greater, about 200 mm or greater, about 300 mm or greater, about 400 mm or greater, about 500 mm or greater, about 600 mm or greater, about 700 mm or greater, about 800 mm or greater, or about 900 mm or greater.

[0195] Aspect (61) relates to the glass article of any one of aspects (57) to (60), wherein the first adhesive comprises a toughened epoxy, acrylic, urethane, or silicone.

[0196] Aspect (62) relates to the glass article of any one of aspects (57) to (61), further comprising a second adhesive disposed between the second regions of the second major surface, the second adhesive being different from the first adhesive.

[0197] Aspect (63) relates to the glass article of aspect (62), wherein the second adhesive comprises a second elongation different from the first elongation.

[0198] Aspect (64) relates to the glass article of aspect (62) or (63), wherein the first binder comprises a first Young's modulus and the second binder comprises a second Young's modulus different from the first Young's modulus.

[0199] Aspect (65) relates to a vehicle interior, comprising the glass article according to any one of aspects (57) to (64).

[0200] Aspect (66) relates to a method for forming a curved glass product, comprising the following steps: applying a first adhesive having a first elongation to a first area of ​​a frame or a cover glass sheet, the frame comprising a supporting surface having a first curved surface in the first area; molding the cover glass sheet to the frame so that the cover glass sheet is consistent with the supporting surface of the frame; and curing the first adhesive at a first temperature for a first period of time, wherein the first curved surface comprises a first radius of curvature, wherein the cover glass sheet comprises a material having a first coefficient of thermal expansion, the frame comprises a material having a second coefficient of thermal expansion, and the first adhesive comprises a first elongation, and wherein the material of the frame and the first adhesive satisfy one of the following conditions: (1) the ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is less than 2, and the first adhesive comprises an elongation of approximately 10% or less, and (2) the ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is greater than or equal to 2, and the elongation is greater than 10%, greater than approximately 50%, greater than approximately 100%, or greater than or equal to approximately 200%.

[0201] Aspect (67) relates to the method as described in aspect (66), further comprising, after the solidifying step, cooling the curved glass article, wherein after the cooling step, the curved glass article has no visual deformation compared to before the solidifying step.

[0202] Aspect (68) relates to the method as described in aspect (66) or aspect (67), further comprising applying a second adhesive to a second area of ​​the frame or the cover glass sheet, the second adhesive comprising a second elongation different from the first elongation.

[0203] Aspect (69) relates to the method of aspect (68), wherein the second region of the frame is flat or comprises a second curved surface having a second radius of curvature greater than the first radius of curvature, and the second elongation is greater than the first elongation.

[0204] Aspect (70) relates to the method of aspect (69), wherein the first adhesive comprises a first Young's modulus and the second adhesive comprises a second Young's modulus different from the first Young's modulus.

[0205] Aspect (71) relates to a method as described in any of aspects (68) to (70), wherein the first elongation is about 100% or less, about 50% or less, about 40% or less, about 30% or less, about 20% or less, or about 10% or less.

[0206] Aspect (72) relates to a method as described in any of Aspects (68) to (71), wherein the second elongation is about 10% or greater, about 20% or greater, about 30% or greater, about 40% or greater, about 50% or greater, about 60% or greater, about 70% or greater, about 80% or greater, about 90% or greater, about 100% or greater, about 150% or greater, about 200% or greater, about 250% or greater, or about 300% or greater.

[0207] Aspect (73) relates to a method as described in any one of aspects (66) to (72), wherein the cover glass sheet comprises a material having a first coefficient of thermal expansion and the frame comprises a material having a second coefficient of thermal expansion.

[0208] Aspect (74) relates to a method as described in any of aspects (66) or (73), wherein the ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is greater than or equal to 2, and the elongation of the first adhesive is greater than 10%, greater than about 50%, greater than about 100%, or greater than or equal to about 200%.

[0209] Aspect (75) relates to the method as described in any one of aspects (66) to (74), wherein the material of the frame comprises a metal, an alloy, or a polymer.

[0210] Aspect (76) relates to the method as described in aspect (75), wherein the material of the frame includes at least one of stainless steel, polycarbonate (PC), acrylonitrile butadiene styrene (ABS), or magnesium alloy.

[0211] Aspect (77) relates to a method as described in any of aspects (66) to (76), wherein at least one of the first adhesive and the second adhesive comprises a toughened epoxy, acrylic, urethane, or silicone.

[0212] Aspect (78) relates to a method as described in any of Aspects (66) to (77), wherein the second radius of curvature is about 100 mm or greater, about 200 mm or greater, about 300 mm or greater, about 400 mm or greater, about 500 mm or greater, about 600 mm or greater, about 700 mm or greater, about 800 mm or greater, or about 900 mm or greater.

[0213] Aspect (79) relates to the method of any one of aspects (66) to (78), further comprising a display bonded to the frame using an optically clear adhesive.

[0214] Aspect (80) relates to a method as described in any one of aspects (66) to (79), wherein the first curved surface and the second curved surface each include at least one location where the radius of curvature is 100 mm or less.

[0215] Aspect (81) relates to the method of any one of aspects (66) to (80), wherein the molding step comprises vacuum forming the cover glass sheet to the frame.

[0216] Aspect (82) relates to the method of any one of aspects (66) to (81), wherein the cover glass sheet comprises a chemically strengthened aluminosilicate glass composition.

[0217] Aspect (83) relates to the method of any one of aspects (66) to (82), wherein the cover glass sheet has a thickness of from 0.4 mm to 2.0 mm.

[0218] Aspect (84) relates to a glass product, comprising: a cover glass sheet having a first main surface and a second main surface, the second main surface comprising a first area and a second area, the first area comprising a first curved surface having a first radius of curvature, the second area being different from the first area; a frame having a supporting surface, the supporting surface comprising a third area and a fourth area, the third area being consistent with the first area of ​​the second main surface, and the fourth area being consistent with the second area of ​​the second main surface, a first adhesive arranged between the first area of ​​the supporting surface and the first area of ​​the second main surface; and a second adhesive arranged between the fourth area of ​​the supporting surface and the second area of ​​the second main surface, wherein the curvature of the first area is greater than the curvature of the second area, and wherein the first adhesive comprises a first Young's modulus, and the second adhesive comprises a second Young's modulus less than the first Young's modulus.

[0219] Aspect (85) relates to the glass article of aspect (84), wherein the second region comprises a second curved surface having a radius of curvature greater than the first radius of curvature, or wherein the second region has no curvature.

[0220] Aspect (86) relates to the glass article of aspect (84) or aspect (85), wherein the first adhesive comprises a first elongation and the second adhesive comprises a second elongation greater than the first elongation.

[0221] Aspect (87) relates to a glass article as described in aspect (86), wherein the first elongation is about 100% or less, about 50% or less, about 40% or less, about 30% or less, about 20% or less, or about 10% or less.

[0222] Aspect (88) relates to a glass article as described in aspect (86) or (87), wherein the second elongation is about 10% or greater, about 20% or greater, about 30% or greater, about 40% or greater, about 50% or greater, about 60% or greater, about 70% or greater, about 80% or greater, about 90% or greater, about 100% or greater, about 150% or greater, about 200% or greater, about 250% or greater, or about 300% or greater.

[0223] Aspect (89) relates to the glass article of any one of aspects (84) to (88), wherein the material of the frame comprises a metal, an alloy, or a polymer.

[0224] Aspect (90) relates to the glass article of aspect (89), wherein the material of the frame comprises at least one of stainless steel, polycarbonate (PC), acrylonitrile butadiene styrene (ABS), or a magnesium alloy.

[0225] Aspect (91) relates to the glass article of any one of aspects (84) to (90), wherein at least one of the first adhesive and the second adhesive comprises a toughened epoxy, acrylic, urethane, or silicone.

[0226] Aspect (92) relates to a glass article as described in any of aspects (84) to (91), wherein the first radius of curvature is 600 mm or less, about 500 mm or less, about 400 mm or less, about 300 mm or less, about 250 mm or less, about 200 mm or less, or about 100 mm or less.

[0227] Aspect (93) relates to a glass article as described in any of Aspects (85) to (92), wherein the second radius of curvature is about 100 mm or greater, about 200 mm or greater, about 300 mm or greater, about 400 mm or greater, about 500 mm or greater, about 600 mm or greater, about 700 mm or greater, about 800 mm or greater, or about 900 mm or greater.

[0228] Aspect (94) relates to the glass article of any one of aspects (84) to (93), further comprising a display bonded to the frame using an optically clear adhesive.

[0229] Aspect (95) relates to the glass article as described in any one of aspects (84) to (94), wherein the first curved surface and the second curved surface each include at least one location where the radius of curvature is 100 mm or less.

[0230] Aspect (96) relates to a vehicle interior, comprising the glass article according to any one of aspects (84) to (95).

[0231] Unless otherwise expressly stated, it is not intended that any method described herein be construed as requiring that its steps be performed in a particular order. Therefore, in the absence of a method claim actually reciting the order in which its steps are to be followed or otherwise specifically stating in the claims or specification that the steps are to be limited to a particular order, it is not intended to infer any particular order. In addition, as used herein, the article "a" is intended to include one or more than one component or element, and is not intended to be construed as meaning only one.

[0232] It will be apparent to those skilled in the art that various modifications and variations may be made without departing from the spirit or scope of the disclosed embodiments. Since those skilled in the art may make modifications, combinations, sub-combinations, and variations to the disclosed embodiments incorporating the spirit and substance of the embodiments, the disclosed embodiments should be interpreted as including all matters within the scope of the attached claims and their equivalents.

Claims

1. A glass product, comprising: a cold-formed cover glass sheet having a first major surface and a second major surface, the second major surface comprising a first region and a second region, the first region comprising a first curved surface having a first radius of curvature, the second region being different from the first region; a frame having a support surface including a third region comprised of a first frame material and a fourth region comprised of a second frame material different from the first frame material, wherein the second major surface of the cover glass sheet faces the support surface of the frame, and wherein the third region includes a second curved surface complementary to the first curved surface and the fourth region is complementary to the second region; a first adhesive disposed between the third region of the support surface of the frame and the first region of the second major surface of the cover glass sheet, the first adhesive comprising a first Young's modulus; as well as A second adhesive is disposed between the fourth region of the support surface of the frame and the second region of the second major surface of the cover glass sheet, the second adhesive comprising a second Young's modulus different than the first Young's modulus.

2. The glass article of claim 1, wherein the first frame material comprises a first coefficient of thermal expansion and the second frame material comprises a second coefficient of thermal expansion.

3. The glass article of claim 2, wherein the first coefficient of thermal expansion is less than the second coefficient of thermal expansion.

4. The glass article of claim 2, wherein the cold-formed cover glass sheet comprises a third coefficient of thermal expansion, and Wherein a ratio of the first thermal expansion coefficient to the third thermal expansion coefficient is 2 or less.

5. The glass article of claim 2, wherein the cold-formed cover glass sheet comprises a third coefficient of thermal expansion, and The ratio of the first thermal expansion coefficient to the third thermal expansion coefficient is 1.5 or less.

6. The glass article of claim 2, wherein the cold-formed cover glass sheet comprises a third coefficient of thermal expansion, and The ratio of the first thermal expansion coefficient to the third thermal expansion coefficient is 1.

7. The glass article of claim 2, wherein the cold-formed cover glass sheet comprises a third coefficient of thermal expansion, and The ratio of the first thermal expansion coefficient to the third thermal expansion coefficient is 0.5 to 1.

5.

8. The glass article of claim 4, wherein a ratio of the second coefficient of thermal expansion to the third coefficient of thermal expansion is 2 or greater.

9. The glass article of any one of claims 1 to 8, wherein the fourth region comprises at least one of a flat region and a second curved surface, the second curved surface having a second radius of curvature greater than the first radius of curvature.

10. The glass article of any one of claims 1 to 8, further comprising a display bonded to the frame or cover glass sheet using an optically clear adhesive.

11. A glass product comprising: a cold-formed cover glass sheet having a first major surface and a second major surface, the second major surface comprising a first region and a second region, the first region comprising a first curved surface having a first radius of curvature, the second region being different from the first region; a frame comprising a first support surface comprising a first frame material and conforming to the first region of the second major surface and a second support surface comprising a second frame material and conforming to the second region of the second major surface; a first adhesive disposed between the first support surface and the first region of the second major surface; as well as a second adhesive disposed between the second support surface and the second region of the second major surface, wherein the first frame material is different from the second frame material, and Wherein the first region comprises a greater curvature than the second region.

12. The glass article of claim 11, wherein the first frame material comprises a first coefficient of thermal expansion and the second frame material comprises a second coefficient of thermal expansion.

13. The glass article of claim 12, wherein the first coefficient of thermal expansion is less than the second coefficient of thermal expansion.

14. The glass article of claim 12, wherein the cold-formed cover glass sheet comprises a third coefficient of thermal expansion, and The ratio of the first thermal expansion coefficient to the third thermal expansion coefficient is 2 or less.

15. The glass article of claim 12, wherein the cold-formed cover glass sheet comprises a third coefficient of thermal expansion, and The ratio of the first thermal expansion coefficient to the third thermal expansion coefficient is 1.5 or less.

16. The glass article of claim 12, wherein the cold-formed cover glass sheet comprises a third coefficient of thermal expansion, and The ratio of the first thermal expansion coefficient to the third thermal expansion coefficient is 1.

17. The glass article of claim 12, wherein the cold-formed cover glass sheet comprises a third coefficient of thermal expansion, and The ratio of the first thermal expansion coefficient to the third thermal expansion coefficient is 0.5 to 1.

5.

18. The glass article of claim 14, wherein a ratio of the second coefficient of thermal expansion to the third coefficient of thermal expansion is 2 or greater.

19. The glass article of any one of claims 11 to 18, wherein the first binder comprises a first Young's modulus and the second binder comprises a second Young's modulus less than the first Young's modulus.

20. The glass article of any one of claims 11 to 18, wherein the first adhesive comprises a first elongation and the second adhesive comprises a second elongation greater than the first elongation.

21. The glass article of any one of claims 11 to 18, wherein the second support surface comprises at least one of a flat region and a second curved surface, the second curved surface having a second radius of curvature greater than the first radius of curvature.

22. The glass article of any one of claims 11 to 18, further comprising a display bonded to the frame or cover glass sheet using an optically clear adhesive.

23. A glass product comprising: a cold-formed cover glass sheet having a first major surface and a second major surface, the second major surface comprising a first curved surface having a first radius of curvature and a second curved surface having a second radius of curvature different from the first radius of curvature; a frame having a support surface including a third curved surface and a fourth curved surface, wherein the second major surface of the cold-formed cover glass sheet faces the support surface of the frame, and wherein the third curved surface is complementary to the first curved surface and the fourth curved surface is complementary to the second curved surface; a first adhesive disposed between the third curved surface of the support surface of the frame and the first curved surface of the second major surface of the cold-formed cover glass sheet, the first adhesive comprising a first elongation; as well as A second adhesive is disposed between the fourth curve of the support surface of the frame and the second curve of the second major surface of the cold-formed cover glass sheet, the second adhesive comprising a second elongation different from the first elongation.

24. The glass article of claim 23, wherein the first binder comprises a first Young's modulus and the second binder comprises a second Young's modulus different than the first Young's modulus.

25. The glass article of claim 23, wherein the first radius of curvature is smaller than the second radius of curvature, and The first elongation is smaller than the second elongation.

26. The glass article of claim 24, wherein the first Young's modulus is greater than the second Young's modulus.

27. The glass article of any one of claims 23 to 26, wherein the cold-formed cover glass sheet comprises a material having a first coefficient of thermal expansion and the frame comprises a material having a second coefficient of thermal expansion.

28. The glass article of claim 27, wherein a ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is less than 2, and the first elongation is 10% or less.

29. The glass article of claim 27, wherein a ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is greater than or equal to 2, and the first elongation is greater than 10%.

30. The glass article of claim 27, wherein the material of the frame and the first adhesive satisfy one of the following conditions: (1) the ratio of the second thermal expansion coefficient to the first thermal expansion coefficient is less than 2, and the first elongation is 10% or less, and (2) A ratio of the second thermal expansion coefficient to the first thermal expansion coefficient is greater than or equal to 2, and the first elongation is greater than 10%.

31. The glass article of any one of claims 23 to 26, further comprising a display bonded to the frame or cover glass sheet with an optically clear adhesive.

32. A glass product comprising: a cold formed cover glass sheet having a first major surface and a second major surface, the second major surface comprising a first curved surface having a first radius of curvature, the cold formed cover glass sheet comprising a material having a first coefficient of thermal expansion; a frame having a support surface, the support surface comprising a second curved surface, wherein the second major surface of the cold-formed cover glass sheet faces the support surface of the frame, and wherein the second curved surface is complementary to the first curved surface, the frame comprising a material having a second coefficient of thermal expansion; as well as a first adhesive disposed between the support surface of the frame and the second major surface of the cold-formed cover glass sheet, wherein the material of the frame and the first adhesive satisfy one of the following conditions: (1) a ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is less than 2, and the first adhesive comprises a first elongation of 10% or less, and (2) A ratio of the second thermal expansion coefficient to the first thermal expansion coefficient is greater than or equal to 2, and the first elongation of the first adhesive is greater than 10%.

33. The glass article of claim 32, wherein a ratio of the second coefficient of thermal expansion relative to the first coefficient of thermal expansion is greater than or equal to 2, and the first elongation of the first adhesive is greater than 50%.

34. The glass article of claim 32, wherein a ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is greater than or equal to 2, and the first elongation of the first adhesive is greater than 100%.

35. The glass article of claim 32, wherein a ratio of the second coefficient of thermal expansion to the first coefficient of thermal expansion is greater than or equal to 2, and the first elongation of the first adhesive is greater than or equal to 200%.

36. The glass article of claim 32, wherein a ratio of the second coefficient of thermal expansion relative to the first coefficient of thermal expansion is less than 2, and the first adhesive comprises a first elongation of 10% or less, and The first curvature radius is 600 mm.

37. The glass article of claim 32, wherein the first adhesive comprises a toughened epoxy, acrylic, urethane, or silicone.

38. The glass article of any one of claims 32 to 37, further comprising a second adhesive disposed between the support surface and the second major surface, the second adhesive being different from the first adhesive, the second adhesive being disposed in a different region than the first adhesive.

39. The glass article of claim 38, wherein the second adhesive comprises a second elongation different from the first elongation.

40. The glass article of claim 38, wherein the first binder comprises a first Young's modulus and the second binder comprises a second Young's modulus different than the first Young's modulus.

41. A method of forming a curved glass article, comprising the steps of: applying a first adhesive having a first elongation to a first region of a frame or of a cover glass sheet, the frame comprising a support surface having a first curved surface in the first region; molding the cover glass sheet to the frame so that the cover glass sheet conforms to the support surface of the frame; as well as curing the first adhesive at a first temperature for a first period of time, wherein the first curved surface comprises a first radius of curvature, wherein the cover glass sheet comprises a material having a first coefficient of thermal expansion, the frame comprises a material having a second coefficient of thermal expansion, and the first adhesive comprises a first elongation, and The material of the frame and the first adhesive satisfy one of the following conditions: (1) the ratio of the second thermal expansion coefficient to the first thermal expansion coefficient is less than 2, and the first elongation is 10% or less, and (2) A ratio of the second thermal expansion coefficient to the first thermal expansion coefficient is greater than or equal to 2, and the first elongation is greater than 10%.

42. The method of claim 41, further comprising, after the solidifying step, cooling the curved glass article, in, After the cooling step, the curved glass article has no visual distortion compared to before the solidifying step.

43. The method of claim 41, further comprising applying a second adhesive to a second region of the frame or the cover glass sheet, the second adhesive comprising a second elongation different from the first elongation.

44. A method as claimed in any one of claims 41 to 43, wherein the step of moulding comprises vacuum forming the cover glass sheet to the frame.

45. The method of any one of claims 41 to 43, wherein the cover glass sheet comprises a strengthened glass composition.

46. ​​The method of any one of claims 41 to 43, wherein the cover glass sheet has a thickness of from 0.4 mm to 2.0 mm.

47. A glass product comprising: a cold-formed cover glass sheet having a first major surface and a second major surface, the second major surface comprising a first region and a second region, the first region comprising a first curved surface having a first radius of curvature, the second region being different from the first region; a frame having a support surface including a third region and a fourth region, the third region coincident with the first region of the second major surface, and the fourth region coincident with the second region of the second major surface; a first adhesive disposed between the first region of the support surface and the first region of the second major surface; as well as a second adhesive disposed between the fourth region of the support surface and the second region of the second major surface, wherein the curvature of the first region is greater than the curvature of the second region, and Wherein the first adhesive comprises a first Young's modulus, and the second adhesive comprises a second Young's modulus less than the first Young's modulus.

48. The glass article of claim 47, wherein the second region comprises a second curved surface having a radius of curvature greater than the first radius of curvature, or The second region has no curvature.

49. The glass article of claim 47, wherein the first adhesive comprises a first elongation and the second adhesive comprises a second elongation greater than the first elongation.

50. The glass article of claim 49, wherein the first elongation is 100% or less.

51. The glass article of claim 49, wherein the second elongation is 10% or greater.

52. The glass article of any one of claims 49 to 51, wherein the material of the frame comprises a metal, an alloy, or a polymer.

53. The glass article of any one of claims 49 to 51 further comprising a display bonded to the frame or cover glass sheet with an optically clear adhesive.

Images