Bulk annealing of glass sheets
US9340443B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2013 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Oct 7, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133302
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Surface modification layers and associated heat treatments, that may be provided on a sheet, a carrier, or both, to control both room-temperature van der Waals (and/or hydrogen) bonding and high temperature covalent bonding between the thin sheet and carrier. The room-temperature bonding is controlled so as to be sufficient to hold the thin sheet and carrier together during vacuum processing, wet processing, and/or ultrasonic cleaning processing, for example. And at the same time, the high temperature covalent bonding is controlled so as to prevent a permanent bond between the thin sheet and carrier during high temperature processing, as well as maintain a sufficient bond to prevent delamination during high temperature processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.