Curved glass articles including a bumper piece configured to relocate bending moment from display region and method of manufacturing same
Embodiments of a curved glass article are disclosed. The article includes a glass sheet having a first major surface and a second major surface opposite to the first major surface. The second major surface defines a first curvature of the glass sheet. The article also includes a display bonded to the second major surface of the glass sheet using an optically clear adhesive. The display has a perimeter with a display edge proximal to the first curvature. The article also includes a bumper piece disposed at least along the display edge proximal to the first curvature and a frame bonded to the second surface of the glass sheet using an adhesive. The frame is disposed around the display and over the bumper piece. In the article, the adhesive has a first modulus and the bumper piece has a second modulus that is greater than the first modulus.
1 . A curved glass article, comprising:
a glass sheet having a first major surface and a second major surface opposite to the first major surface, wherein the second major surface defines a first curvature of the glass sheet along a length of the glass sheet;
a display bonded to a flat section of the second major surface of the glass sheet using an optically clear adhesive, the display having a perimeter with a display edge proximal to the first curvature, the display edge spaced from the first curvature in a first direction parallel to the length of the glass sheet;
a bumper piece disposed between the display edge and the first curvature, the bumper piece comprising one or more of an elastomeric material and an adhesive material; and
a frame bonded to the second surface of the glass sheet using an adhesive, the frame being disposed around the display and over the bumper piece, the adhesive having a thickness defined between the frame and the glass sheet, wherein the bumper piece has a width in the first direction from 1× to 5× of the thickness of the adhesive;
wherein the adhesive has a first modulus and the bumper piece has a second modulus, the second modulus being greater than the first modulus.
2 . The curved glass article of claim 1 , wherein, prior to bonding the frame to the second surface, the bumper piece has a first side with a first thickness proximal to the display and a second side with a second thickness proximal to the first curvature, the first thickness being greater than the second thickness, and wherein, after bonding the frame to the second surface, the first thickness of the first side of the bumper piece is no more that the second thickness of the second side of the bumper piece.
3 . The curved glass article of claim 1 , wherein the second modulus is at least 2.0 MPa.
4 . The curved glass article of claim 1 , wherein a cross-section of the bumper piece has thickness in a range of from 0.5 mm to 4.0 mm.
5 . The curved glass article of claim 1 , wherein a cross-section of the bumper piece has a width of from 1.0 mm to 20.0 mm.
6 . The curved glass article of claim 1 , wherein the adhesive is a first adhesive and wherein the bumper piece is a second adhesive, wherein the first adhesive and the second adhesive are components of an adhesive layer disposed between the frame and the second major surface.
7 . The curved glass article of claim 1 , wherein the bumper piece comprises an elastomer having a modulus of at least 20 MPa.
8 . The curved glass article of claim 1 , wherein, in a region where the display is bonded to the second surface, the glass sheet has a maximum deflection from planar of 0.20 mm.
9 . The curved glass article of claim 1 , further comprising a second display bonded to the second major surface of the glass sheet, wherein the display and the second display are located on opposite sides of the first curvature.
10 . The curved glass article of claim 9 , wherein the second display comprises a second perimeter having a second display edge proximal to the first curvature and wherein the article further comprises a second bumper piece disposed between the second display edge and the first curvature.
11 . The curved glass article of claim 1 , wherein the bumper piece is disposed between the frame and the glass sheet.
12 . The curved glass article of claim 1 , wherein the first curvature has a bend radius of at least 100 mm.
13 . A vehicle interior system, comprising the curved glass article according to claim 1 , wherein the vehicle interior system is at least one of a center console, an instrument panel, or a dashboard.
14 . A curved glass article, comprising:
a glass sheet having a first major surface and a second major surface opposite to the first major surface, a thickness defined as a distance between the first major surface and the second major surface, a width defined as a first maximum dimension of one of the first or second major surfaces orthogonal to the thickness, and a length defined as a second maximum dimension of one of the first or second major surfaces orthogonal to both the thickness and the width, wherein the second major surface defines a first curvature of the glass sheet along the length of the glass sheet;
a display bonded to the second major surface of the glass sheet using an optically clear adhesive, the display having a perimeter with a display edge proximal to the first curvature, the display edge spaced from the first curvature in a first direction parallel to the length of the glass sheet;
a bumper piece disposed only in a local region adjacent to the display edge proximal to the first curvature on one side and adjacent to a transition between a flat section of the glass sheet and the first curvature on an opposite side, the bumper piece comprising one or more of an elastomeric material, an adhesive material, and a non-reinforced plastic material; and
a frame bonded to the second surface of the glass sheet using an adhesive, the frame being disposed around the display and over the bumper piece, wherein an entirety of the bumper piece is disposed between the display edge and the transition in the first direction;
wherein the display defines a display region of the glass sheet and wherein, in the display region, the curved glass article has a dark state uniformity of at least 90%.
15 . The curved glass article of claim 14 , wherein the display has a contrast ratio of at least 5000.
16 . The curved glass article of claim 14 , wherein the display is bonded to the second major surface of the glass sheet in a flat section and wherein, in the display region, the glass sheet has a deflection of less than 0.20 mm.
17 . The curved glass article of claim 14 , wherein the bumper piece creates a bending moment of at least 450 Nm/m outside of the display region.
18 . The curved glass article of claim 14 , wherein the bumper piece is wedge-shaped.
19 . The curved glass article of claim 14 , wherein the bumper piece has a modulus in a range from at least 20 MPa to no more than 2.0 MPa.
20 . The curved glass article of claim 14 , wherein the adhesive has a thickness defined between the frame and the glass sheet, and wherein the bumper piece has a width in the first direction from 1× to 5× of the thickness of the adhesive.