Gorilla Glass
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Gorilla Glass , Germanized and Gorilla Glass or Gorilla Glass is the registered word mark for a thin chemically toughened glass from the group of aluminosilicate glasses of the US manufacturer Corning . It is mainly used as a cover glass for touch screens on portable electronic devices.
History, manufacture and properties
The glass with a thickness between 0.7 and 2 mm is characterized by a high break and scratch resistance. This is achieved by using an ion exchange process in a potassium salt melt at around 400 ° C to replace sodium with potassium ions in the glass layers close to the surface, thereby introducing a superficial compressive stress that makes crack growth difficult. While normal glass shows cracks at a point load of 5 Newtons , according to the manufacturer, this only occurs with loads of over 40 Newtons. It is similar with the scratch resistance. According to the manufacturer, the product should be about twice to three times as scratch-resistant as conventional glass.
The manufacturer Corning had already developed similar glasses in the 1960s, but insists that Gorilla Glass is a new development, even if experiences from the 1960s have been incorporated. Improved variants, which are marketed under the name Gorilla Glass 2 , are just as resistant with a thickness between 0.5 and 2.0 mm and slightly reduced density, but only soften at higher temperatures.
Smartphone screens with Gorilla Glass 3 are manufactured with 5240–6360 N / mm², which, according to the manufacturer, should be "three times as strong" as Gorilla Glass 2 .
The Gorilla Glass 4 , shown by the manufacturer in November 2014, is said to offer even higher breaking strength when dropped on uneven surfaces and to withstand a drop test from a height of one meter in 80 percent of the cases. This glass is produced in thicknesses from 0.4 to 1 mm.
Gorilla Glass 5 was introduced in July 2016. It is said to withstand 80% of all falls from a height of 1.6 meters onto hard surfaces.
On July 18, 2018, Corning introduced Gorilla Glass 6, which was specially developed for smartphones and other mobile devices. It should be able to withstand several falls undamaged - in the laboratory, displays made of Gorilla Glass 6 have survived 15 falls from a height of one meter onto a rough surface, according to the manufacturer.
similar products
Asahi Glass has been offering a comparable product under the brand name Dragontrail since 2011 and Schott has been offering the similar Xensation Cover since June 2012 . Both products are also made of aluminosilicate glass.
Web links
Individual evidence
- ^ Corning Inc .: Gorilla Glass Fact Sheet. ( Memento of the original from May 29, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 148 kB) English, August 2008, accessed on June 20, 2012.
- ↑ a b FAQ on corninggorillaglass.com, English, accessed on January 4, 2013.
- ↑ Donnell Walton, Jaymin Amin, Naga Shashidhar: Specialty Glass: A New Design element in consumer electronics. ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. English, July 12, 2010, accessed January 4, 2012.
- ↑ Press release from Corning Inc .: Corning to Showcase Glass Innovation for Consumer Electronics Design at CES 2012. ( Memento of the original from January 6, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. English, January 5, 2012, accessed January 4, 2013.
- ↑ Shawn Knight: Corning to showcase Gorilla Glass 2 at CES 2012. English, message from Techspot.com from January 6, 2012, accessed on January 4, 2013.
- ^ Corning Inc .: Corning Gorilla Glass 2 Product Information. (PDF; 175 kB) English, January 2012, accessed on June 20, 2012.
- ^ Corning Redefines the Standard in Damage Resistance With Gorilla Glass 4 . November 20, 2014. Retrieved March 10, 2015.
- ↑ Corning Gorilla Glass 4 Product Information. ( Memento of the original from August 20, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 733 kB), English, as of September 2015, accessed on August 20, 2016.
- ↑ Corning Gorilla Glass 5. Corning Incorporated, accessed August 2, 2017 .
- ↑ Corning Introduces Corning® Gorilla® Glass 6, Delivering Improved Durability for Next-Generation Mobile Devices. Retrieved July 31, 2018 (American English).
- ↑ Asahi Dragontrail. (PDF) Technical Reference Document at Abrisatechnologies.com, as of July 2012.
- ^ Anton Waldt: Gorilla Glass vs. Xensation Cover: Schott claims titles for the hardest display surface. (Video) Engadget.com, June 6, 2012.
