Lead-free frits for plasma displays and other glass devices utilizing glass sealing materials
US7439201B2 · kind B2 · utility
8Cited by
10References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 29, 2006 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Jan 13, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C8/24
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention is directed to lead-free glass frit compositions that can be used as sealing frits, the compositions being a blend of: (1) at least one of two glass families which are SnO—ZnO—P2O5 and alkali-ZnO—P2O5 glasses; and (2) at least one cerammed filler material having a crystalline phase selected from the group consisting of beta-quartz, beta-eucryptite, cordierite, and beta-spodumene. The blends of the invention have flow characteristics that enable them to be used at sealing temperatures in the range of 450-550° C., and a CTE value in the range of 60-90×10−7/° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.