公开(公告)号：US20240027654A1

公开(公告)日：2024-01-25

申请号：US18223224

申请日：2023-07-18

Applicant: Apple Inc.

Inventor： Lijie Bao ,  Que Anh S. Nguyen ,  Tyler R. Roschuk ,  Ralf Hofmann ,  Matthew S. Rogers

IPC: G02B1/14 ,  C23C14/10 ,  C23C14/06 ,  C23C14/34 ,  C23C14/00 ,  C03C17/34

CPC classification number: G02B1/14 ,  C23C14/10 ,  C23C14/0676 ,  C23C14/34 ,  C23C14/0084 ,  C03C17/3435 ,  C03C2218/155 ,  C03C2217/78

Abstract: An electronic device can include a housing, a display positioned within the housing; and a cover glass disposed over the display and attached to the housing. The cover glass can include a glass sheet; a hard coat layer disposed on the glass sheet, having a hardness greater than a hardness of the glass sheet; and a gradient layer deposited on the hard coat layer and having a composition that transitions from a first composition at the hard coat layer to a second composition at a top surface of the gradient layer. The first composition can be predominantly a composition of the hard coat layer and the second composition is different than the first composition. The second composition can be predominantly SiO2. The hard coat layer can include SiON. The cover glass can include an intermediate gradient layer disposed between the glass sheet and the hard coat layer.