Ceramic substrate and its manufacturing method, power module
US10710936B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Feb 14, 2017 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Aug 20, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided is a ceramic substrate. The ceramic substrate includes a core layer, made of zirconia toughened alumina; and surface layers, symmetrically located on an upper and a lower surfaces of the core layer, made of Al2O3. The core layer has a chemical composition of 0 wt %<ZrO2≤40 wt % and 60 wt %≤Al2O3<100 wt %. A method for manufacturing the ceramic substrate and a power module including the ceramic substrate are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.