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What is a phone screen made of?

Updated March 23, 2017

A mobile phone screen is typically made of glass, according to Discovery News. If it is a touch screen, it is usually coated with a special conductive film called ITO, or indium tin oxide.

Glass

The glass must be hard to withstand shattering and thin enough so that it's not too heavy. Corning makes a thin, super-strong product called Gorilla glass for some phones, according to CBS News. However, cell phone glass screens are not shatterproof.

ITO

ITO can be made into a thin, colourless film with excellent transparency, stability and electrical conductivity. It is used for LCD, plasma and OLED displays and solar cells, as well as touch screens.

Cost

Glass is not a costly material, but ITO is quite expensive because it contains rare materials. Future coatings could consist of graphene, which is also very conductive and stronger than ITO, according to Discovery News.

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About the Author

Lexa W. Lee is a New Orleans-based writer with more than 20 years of experience. She has contributed to "Central Nervous System News" and the "Journal of Naturopathic Medicine," as well as several online publications. Lee holds a Bachelor of Science in biology from Reed College, a naturopathic medical degree from the National College of Naturopathic Medicine and served as a postdoctoral researcher in immunology.