US Patent 10069952 Cover glass for mobile device

A portable electronic device includes a housing and a glass cover panel having a generally planar central region and a rounded or curved perimeter region circumscribing the generally planar central region. The portable electronic device includes circuitry disposed in the housing and operable to detect a touch or proximity of a user at the glass cover panel at the generally planar central region. The rounded perimeter region has an exposed rounded surface circumscribing the generally planar central region and the housing does not overlap the rounded perimeter region of the glass cover panel. The rounded perimeter region may have a radius of curvature of greater than about 0.5 mm. The rounded perimeter region provides a smooth curved transition between a generally planar front surface of the generally planar central region of the glass cover panel and a side surface of the housing of the portable electronic device.