Gorilla Glass is an alkali-aluminosilicate sheet toughened glass that Corning Inc. developed and manufactures. Corning registered the Gorilla Glass brand name as a trademark.
Corning engineered Gorilla Glass to combine thinness, lightness, and damage-resistance. It is used primarily as the cover glass for portable electronic devices, including mobile phones, portable media players, portable computer displays, and some television screens.
During manufacture, the glass is immersed in a molten alkaline salt bath using ion exchange to create compressive residual stress at the surface to reduce the glass' tendency to crack: for a crack to form, it would have to overcome the compressive stress.
Corning engineered Gorilla Glass to combine thinness, lightness, and damage-resistance. It is used primarily as the cover glass for portable electronic devices, including mobile phones, portable media players, portable computer displays, and some television screens.
During manufacture, the glass is immersed in a molten alkaline salt bath using ion exchange to create compressive residual stress at the surface to reduce the glass' tendency to crack: for a crack to form, it would have to overcome the compressive stress.
Gorilla Glass 4 provides at least two times improved damage resistance over competitive aluminosilicate glass, as measured by retained strength after damage events, resulting in improved mechanical durability of the glass to in-field damage events, such as drops.
Corning scientists examined hundreds of broken devices and found that damage caused by sharp contact accounted for more than 70 percent of field failures. The scientists then developed new drop-test methods that simulate real-world break events, based on thousands of hours analyzing cover glass that had broken in the field or laboratory. The scientists used the new methods to drop devices face down from one meter, such that the cover glass directly contacted a rough surface. They found:
* Gorilla Glass 4 is up to two times tougher than competitive glasses
* Gorilla Glass 4 survives up to 80 percent of the time
* Soda-lime glass, as deployed in today’s commercial devices, breaks nearly 100 percent of the time.
* Gorilla Glass 4 is up to two times tougher than competitive glasses
* Gorilla Glass 4 survives up to 80 percent of the time
* Soda-lime glass, as deployed in today’s commercial devices, breaks nearly 100 percent of the time.