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US 12,576,714 B2Granted
Glass article and onboard display device
AssigneeAGC Inc.
InventorsToshinari Watanabe, Yasuhiro Inoue, Atsushi Inoue, Ryou Hokari, Junichi Kakuta
Life of this patent
Estimating the term…
Abstract
The present invention relates to a glass article (10) that includes cover glass (12) and a frame (14) that is bonded to a principal surface (12B) side of the cover glass (12) via an adhesive layer (16). The cover glass is provided with a curved part that protrudes toward principal surface (12B). The adhesive layer (16) includes at least one of a first adhesive layer and a second adhesive layer. The thickness, Young's modulus, and perimeter of the cover glass, the radius of curvature of the curved part, and the area of the adhesive layer have a specific relationship.
Claims20
A glass article comprising:
- a cover glass including a first main surface and a second main surface;
- and
- a frame adhered to a second main surface side of the cover glass via an adhesive layer, wherein
- the cover glass is provided with a curved portion having a convex shape toward a direction of the second main surface,
- the adhesive layer includes at least one of a first adhesive layer having an elastic modulus of 5 MPa or more in an indentation elastic modulus test and a second adhesive layer having an elastic modulus of less than 5 MPa in the indentation elastic modulus test, and
- when R′ is represented by the following formula (1) and C1 is represented by the following formula (2), the curved portion satisfies the following formula (3) in a case of C1>0 and satisfies the following formula (4) in a case of C1≤0:
- [
- Math
- .
- 1
- ]
-
- R
- ′
- =
- R
- +
- F
-
- (
- 5
-
- t
- -
- 0.4
- )
- (
- 1
- )
- [
- Math
- .
- 2
- ]
-
- C
- 1
- =
- 1000
- /
- R
- ′
- -
- 7.76
- t
- 2
- +
- 19.5
- t
- -
- 12.7
- +
- (
- 1
- -
- 0.9
- t
- 0.5
- )
-
- (
- A
- 2
- /
- (
- A
- 1
- +
- A
- 2
- )
- )
- (
- 2
- 〉
- [
- Math
- .
- 3
- ]
-
- 0.2
- -
- (
- 0.45
- Et
- 2
- +
- 280
-
- E
-
- (
- t
- /
- R
- ′
- )
- -
- 45.36
- )
- 2
- 245.6
- L
- (
- 2.44
- A
- 1
- +
- A
- 2
- )
- +
- 9.41
- (
- 3
- )
- [
- Math
- .
- 4
- ]
-
- (
- A
- 1
- +
- A
- 2
- )
- /
- L
- >
- 2.4
- (
- 4
- )
- here,
- R indicates a curvature radius (mm) of the curved portion,
- F indicates a length of a flat region having a flat shape in a first direction orthogonal to a bending axis of the curved portion when the cover glass is provided with the flat region adjacent to the curved portion in the first direction,
- t indicates a thickness (mm) of the cover glass,
- A1 indicates an area (mm2) of the first adhesive layer in the curved portion,
- A2 indicates an area (mm2) of the second adhesive layer in the curved portion,
- E indicates a Young's modulus (GPa) of the cover glass, and
- L indicates a length (mm) of the curved portion in the first direction.
142 more elements
A glass article comprising:
- a cover glass including a first main surface and a second main surface;
- and
- a frame adhered to a second main surface side of the cover glass via an adhesive layer, wherein
- the cover glass is provided with a curved portion having a convex shape toward a direction of the first main surface,
- the adhesive layer includes at least one of a first adhesive layer having an elastic modulus of 5 MPa or more in an indentation elastic modulus test and a second adhesive layer having an elastic modulus of less than 5 MPa in the indentation elastic modulus test, and
- when R′ is represented by the following formula (1) and C2 is represented by the following formula (5), the curved portion satisfies the following formula (6) in a case of C2>0 and satisfies the following formula (7) in a case of C2≤0:
- [Math. 9]
- R′=R+F(5t−0.4) (1)
- [
- Math
- .
- 10
- ]
-
- C
- 2
- =
- 1000
- /
- R
- ′
- -
- 4.54
- t
- 2
- +
- 11.37
- t
- -
- 7.58
- +
- (
- 0.586
- -
- 0.44
- t
- 0.5
- )
-
- (
- A
- 2
- /
- (
- A
- 1
- +
- A
- 2
- )
- )
- (
- 5
- )
-
- [
- Math
- .
- 11
- ]
-
- 0.2
- -
- (
- 0.659
- Et
- 2
- +
- 705.5
- E
-
- (
- t
- /
- R
- ′
- )
- -
- 0.3869
- L
- (
- 2.44
- A
- 1
- +
- A
- 2
- )
- -
- 72.05
- )
- 2
- 245.6
- L
- (
- 2.44
- A
- 1
- +
- A
- 2
- )
- +
- 9.41
- >
- 0
- (
- 6
- )
-
- [
- Math
- .
- 12
- ]
-
- (
- A
- 1
- +
- A
- 2
- )
- /
- L
- >
- 2.4
- (
- 7
- )
- here,
- R indicates a curvature radius (mm) of the curved portion,
- F indicates a length of a flat region having a flat shape in a first direction orthogonal to a bending axis of the curved portion when the cover glass is provided with the flat region adjacent to the curved portion in the first direction,
- t indicates a thickness (mm) of the cover glass,
- A1 indicates an area (mm2) of the first adhesive layer in the curved portion,
- A2 indicates an area (mm2) of the second adhesive layer in the curved portion,
- E indicates a Young's modulus (GPa) of the cover glass, and
- L indicates a length (mm) of the curved portion in the first direction.
135 more elements
Dependencies are inferred from the claim text.