Bendable glass stack assemblies, articles and methods of making the same
US9321677B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2015 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Jan 21, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/266
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A glass element having a thickness from 25 μm to 125 μm, a first primary surface, a second primary surface, and a compressive stress region extending from the first primary surface to a first depth, the region defined by a compressive stress σI of at least about 100 MPa at the first primary surface. Further, the glass element has a stress profile such that when the glass element is bent to a target bend radius of from 1 mm to 20 mm, with the center of curvature on the side of the second primary surface so as to induce a bending stress σB at the first primary surface, σI+σB<0. Still further, the glass element has a puncture resistance of ≧1.5 kgf when the first primary surface of the glass element is loaded with a tungsten carbide ball having a diameter of 1.5 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.