Display cover glass and display cover glass fabrication method
US9840435B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2014 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Jan 18, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/315
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides a cover glass for a display, having high durability to slow cracking and strong abraded strength even though a compressive stress is large and a depth of a compressive stress layer is deep. The present invention relates to a cover glass for a display, in which a depth of a compressive stress layer (DOL) is 30 μm or more, a surface compressive stress is 300 MPa or more, a position (HW) at which a compressive stress is half of a value of the surface compressive stress is a position of 8 μm or more from a glass surface, and the depth of the compressive stress layer (DOL) and the position (HW) at which the compressive stress is half of the value of the surface compressive stress satisfy the following formula:0.05≦HW/DOL≦0.23 (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.