Corning scientists develop new methods to test resistance of Gorilla® Glass 4

  Product news

The Corning cover glass for electronic devices offers up to two times better performance over competing products when dropped on rough surfaces.

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Corning scientists developed new drop-test methods that simulate real-world break events
Corning Incorporated (NYSE:GLW) announced 20 November 2014 its latest breakthrough innovation in consumer electronics material design, Corning® Gorilla® Glass 4, which is up to two times tougher than any competitive cover glass design now in the market. The new Gorilla Glass 4 has been formulated to address consumers’ No. 1 issue - screen breakage from everyday drops.
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 that Gorilla Glass 4 is up to two times tougher than competitive glasses and survives up to 80 percent of the time while soda-lime glass, as deployed in today’s commercial devices, breaks nearly 100 percent of the time.
“Corning® Gorilla® Glass has outperformed competing materials, such as  soda-lime glass and other strengthened glass, since it was introduced in 2007, ...
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