There are three reasons why strengthened glass wins over plastics for touch screens on mobile. They are given below
- Glass is strong. Theoretically, glass can tolerate the pressure of over 10,000 elephants that are stacked on top of one another on a scale. That is a strength of 10 gigapascals.
- Glass is stable. In fact, it takes ore than 20 trillion times the age of the earth to create visible sag on the glass window.
- Glass is impermeable. While a molecule of oxygen can pass through a 1 mm thick plastic in around 2 weeks, for glass it is1 in 30 billion years.