Ceramic substrate
US8343617B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Jan 21, 2010 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Feb 26, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A Ceramic substrate is provided. The ceramic substrate includes a ceramic main body and a planar buffer layer on the ceramic main body. Further, the coefficient of thermal expansion of the ceramic main body CTEm and the coefficient of thermal expansion of the planar buffer layer CTEp satisfy the following mathematical relationship: |CTEm−CTEp|≦3×10−6/° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.