Lithium niobate wafers with narrow distribution of surface acoustic wave properties
US8262794B2 · kind B2 · utility
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2References
13Claims
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Key dates
| Filing date | Mar 20, 2009 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Jun 9, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/42
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method is provided of growing crystals from compounds that melt congruently with negligible volatilization. The composition of one or more crystal samples is measured. A determination is made of a deviation of crystal composition from congruency. A determination is made of an initial melt composition and a source material composition correction relative to the deviation. Crystals are grown using the composition correction to yield reproducible material for surface acoustic substrate manufacturing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.