Gorilla Glass 7i
- Product Item : AT-61161
- Category： Optical Cover Glass Materials
- Product description：A new cover glass engineered to deliver improved durability for intermediate and value-segment mobile devices. Gorilla Glass 7i broadens Corning’s renowned tough glass portfolio, o ering better drop a
Gorilla Glass 7i
A new cover glass engineered to deliver improved durability for intermediate and value-segment mobile devices. Gorilla Glass 7i broadens Corning’s renowned tough glass portfolio, o ering better drop and scratch performance compared to competitive lithium aluminosilicate glasses.
Product information
Benefits
• Engineered for competitive drop and scratch performance
• High resistance to sharp contact damage
• High retained strength after use
• Superior surface quality
Applications
Ideal protective cover material for the front and back of all
|
electronic devices: • Smartphones • Notebook PCs • Tablets • Smartwatches and wearables |
• Smart Homedevices • Cameras • Commercial and Point of Sale Displays |
Thickness
Standard
Other
Viscosity
Softening Point (107.6 poises) 880°C
Annealing Point (1013.2 poises) 627 °C
Strain Point (1014.7 poises) 576 °C
|
Properties Density Young’s Modulus Poisson’s Ratio Shear Modulus Vickers Hardness (200g load) Unstrengthened Strengthened Fracture Toughness Coefficient of Thermal Expansion (0-300°C) |
2.41g/cm3 77GPa 0.22 31.8 GPa 591 kgf/mm2 658 kgf/mm2 0.78MPa m0.5 59.9 x 10-7/°C |
Optical
Refractive Index (590 nm)
Core Glass* 1.51
Compression Layer 1.51
Photo-elastic constant 30.8nm/cm/MPa
Transmission ≥ 90.5%
@ 0.6 mm thickness
Chemical Durability
Durability is measured via weight loss per surface area after immersion in the solvents shown below. Values are highly dependent upon actual testing conditions. Data is reported for Gorilla Glass Victus.
|
Reagent |
Time |
Temperature(° C) |
Weight Loss(mg/cm2) |
|
HCI – 5 wt% |
24 hrs. |
95 |
47 |
|
NH4F:HF – 10 wt% |
20 min. |
20 |
1.3 |
|
HF – 10 wt% |
20 min. |
20 |
15.4 |
|
NaOH – 5 wt% |
6 hrs. |
95 |
2.3 |
Electrical
Frequency (MHz) Dielectric Constant Loss Tangent
54 6.48 0.008
163 6.44 0.008
272 6.44 0.008
381 6.41 0.009
490 6.40 0.009
599 6.40 0.009
912 6.26 0.009
1499 6.24 0.010
1977 6.24 0.010
2466 6.24 0.010
2986 6.22 0.011
Drop Test Performance
Gorilla Glass 7i survived up to 2X higher than competitive Li-Al-Si on 180-grit sandpaper
In lab tests,Gorilla Glass 7i survived drops of up to 1 meter on 180-grit sandpaper,simulating asphalt.
Competitive lithium aluminosilicate typically fails from less than 0.5 meters.
Scratch Test Performance
Gorilla Glass 7i provided up to 2X higher scratch threshold than competitive Li-Al-Si glasses
We tested for scratch threshold using our Knoop Diamond Scratch Test. For Gorilla Glass 7i, the scratch threshold is typically 8-10 Newtons. The typical threshold for competitive lithium aluminosilicate is at 4 Newtons.
