Corning Incorporated

Jeonghong Oh

Charlene Marie Smith

Shandon Dee Hart

Karl William Koch, Iii

Ljerka Ukrainczyk

James Joseph Price

Jaymin Amin

Carlo Anthony Kosik Williams

Jason Thomas Harris

Lin Lin

Dong-gun Moon

Ananthanarayanan Subramanian

Chang-gyu Kim

Tingge Xu

A transparent article is described herein that includes: a glass-ceramic substrate comprising first and second primary surfaces opposing one another and a crystallinity of at least 40% by weight; and an optical film structure disposed on the first primary surface. The optical film structure comprises a plurality of alternating high refractive index (RI) and low RI layers and a scratch-resistant layer. The article also exhibits an average photopic transmittance of greater than 80% and a maximum hardness of greater than 10 GPa, as measured by a Berkovich Hardness Test over an indentation depth range from about 100 nm to about 500 nm. The glass-ceramic substrate comprises an elastic modulus of greater than 85 GPa and a fracture toughness of greater than 0.8 MPa·√m. Further, the optical film structure exhibits a residual compressive stress of ≥700 MPa and an elastic modulus of ≥140 GPa.

Transparent glass-ceramic articles with retained strength and display devices with the same

Glass-ceramic articles having specified elastic modulus and fracture toughness

Growing community of inventors

Cheonan-si, South Korea

Jeonghong Oh