With support from Apple’s Advanced Manufacturing Fund, experts at both companies worked together to develop a new glass-ceramic, which gets its strength from nano-ceramic crystals, produced in Corning’s plant in Harrodsburg, Kentucky, the facility where every generation of iPhone glass has been made.
The new material was enabled by a high-temperature crystallization step which forms nano-crystals within the glass matrix. Those specialized crystals are kept small enough that the material is transparent. The resulting material makes up the revolutionary Ceramic Shield, which Apple used to fashion the new front cover featured on iPhone in the iPhone 12 lineup. Prior to Ceramic Shield, embedded crystals have traditionally affected the material’s transparency, a crucial factor for the front cover of iPhone because so many features, including the display, the camera, and sensors for Face ID, need optical clarity to function.
“We are incredibly proud of our collaboration with Apple on Ceramic Shield, made possible in part through the Advanced Manufacturing Fund and the hard work and dedication of hundreds of individuals at Corning and Apple,” said Wendell P. Weeks, Corning’s chairman and chief executive officer. “We thank Apple for our longstanding product-development partnership and for their continued commitment to supporting the American workforce. The deep investment they’ve provided for new manufacturing technology in our Harrodsburg, Kentucky, facility is not only fueling life-changing innovation, it’s also helping us sustain vital communities where we live and work – a fundamental objective at both of our companies. Together, we’re developing a world-class workforce, engaging them in new technologies, and creating opportunities for learning and training.”
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