Laminated glass
Laminated glass for a vehicle includes a vehicle-interior side glass plate, a vehicle-exterior side glass plate, an interlayer film that bonds the vehicle-interior side glass plate and the vehicle-exterior side glass plate, and a structure sealed in the interlayer film. The interlayer film includes a first interlayer film bonded to the vehicle-interior side glass plate, a second interlayer film bonded to the vehicle-exterior side glass plate, and a third interlayer film located between the first interlayer film and the second interlayer film to enclose an outer periphery of the structure. Where a film thickness of the first interlayer film or the second interlayer film, whichever is thinner, is denoted as ti, and a thickness of the structure is denoted as ts, ti/ts≥0.4 is satisfied. Where a flexural modulus of the structure is denoted as E 1 [MPa], a relationship between ts and E 1 satisfies E 1 ×ts 3 ≥500.
1. A curved shaped laminated glass for a vehicle, the laminated glass comprising:
a vehicle-interior side glass plate;
a vehicle-exterior side glass plate;
an interlayer film that bonds the vehicle-interior side glass plate and the vehicle-exterior side glass plate; and
a display device structure sealed in the interlayer film,
wherein
the display device structure comprising (a) a substrate made of a glass and a display device on the substrate;
the interlayer film includes:
a first interlayer film bonded to the vehicle-interior side glass plate;
a second interlayer film bonded to the vehicle-exterior side glass plate; and
a third interlayer film located between the first interlayer film and the second interlayer film to enclose an outer periphery of the structure,
wherein each of the first interlayer film, the second interlayer film and the third interlayer film consisting essentially of ethylene vinyl acetate;
wherein where a film thickness of the first interlayer film or the second interlayer film, whichever is thinner, is denoted as ti and is from 0.4 mm to 1.6 mm, and a thickness of the substrate of the display device structure is denoted as ts and is from 0.3 mm to 2.2 mm, ti/ts≥0.60 is satisfied, and
wherein where a flexural modulus of the structure is denoted as E 1 [MPa], a relationship between ts in mm and E 1 satisfies E 1 ×ts 3 ≥500.
2. The laminated glass according to claim 1 , wherein the flexural modulus E 1 of the structure is equal to or greater than 100 MPa.
3. The laminated glass according to claim 1 , wherein the flexural modulus E 1 of the structure is equal to or greater than 1 GPa.
4. The laminated glass according to claim 1 , wherein the flexural modulus E 1 of the structure is equal to or greater than 10 GPa.
5. The laminated glass according to claim 1 , wherein in an area between a position 10 mm inside of an end portion of the structure in a plan view and a position 10 mm outside of the end portion of the structure in the plan view, a variation in a total thickness of the laminated glass is equal to or smaller than ±100 μm.
6. The laminated glass according to claim 1 , wherein a width of the third interlayer film is equal to or greater than 5 mm.
7. The laminated glass according to claim 1 , wherein the structure includes a wiring plate electrically connected to the structure,
in a plan view, a distance between a connection end portion of the wiring plate connected to the structure and an end portion of the vehicle-interior side glass plate is equal to or greater than 1 mm, and a distance between the connection end portion and an end portion of the vehicle-exterior side glass plate is equal to or greater than 1 mm.
8. The laminated glass according to claim 7 , wherein in a plan view of the laminated glass, the wiring plate is arranged at a position that is visible.
9. The laminated glass according to claim 1 , wherein a total thickness of the laminated glass is equal to or greater than 2.8 mm and equal to or smaller than 10 mm.
10. The laminated glass according to claim 1 , wherein the display device is selected from the group consisting of a liquid crystal display device, an organic EL display device, an inorganic EL display device and an LED device.
11. The laminated glass according to claim 1 , wherein the substrate is a glass substrate.
12. The laminated glass according to claim 11 , wherein 4.0≥ti/ts≥0.6.
13. The laminated glass according to claim 1 , wherein 4.0≥ti/ts≥0.6.
14. The laminated glass according to claim 11 , wherein 4.0≥ti/ts≥0.72.
15. The laminated glass according to claim 1 , wherein 4.0≥ti/ts≥0.72.
16. The laminated glass according to claim 1 , wherein the vehicle-interior side glass plate has a first non-zero curvature; the vehicle-exterior side glass plate has a second non-zero curvature, which is the same as the first curvature; and the display device structure has a third curvature, which is different from the first curvature and the second curvature.