| 摘要 |
An objective of the present invention is to provide a ceramic substrate which does not generate any crack by a shock when the ceramic substrate is fitted to a supporting case or taken off therefrom or any crack resulting from a thermal stress, a thermal shock and the like when the ceramic substrate is heated after the fixation thereof to the supporting case, and which is capable of being prevented from being rotated. The present invention is a ceramic substrate having a conductor layer formed inside thereof or on the surface thereof, wherein a notch is formed.
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